Multi-directional flow precipitation unit and use method thereof
阅读说明：本技术 一种多向流沉淀单元及其使用方法 (Multi-directional flow precipitation unit and use method thereof ) 是由 魏令勇 高琼 刘启诚 秦春禹 寇长江 刘艳春 安浩 李晓辉 武彪 于 2019-10-28 设计创作，主要内容包括：本发明涉及一种多向流沉淀单元及其使用方法,包括若干组依次按列或按排周期性布设的多向流沉淀组件,每个多向流组件包括一块第一平板、若干块间隔设置的第二平板、若干根间隔设置的方管和若干根间隔设置的三角管,第一平板长度方向与水平面呈60度夹角布设；若干根间隔设置的方管相互平行均垂直设置在第一平板的一个板面上；若干块间隔设置的第二平板位于与第一平板相平行的同一平面上且垂直布设在方管所在的平面上；若干个间隔设置的三角管长度方向相互平行的位于同一平面,相邻三角管的顶角对应垂直设置在相邻两块第二平板间的方管上。其具有结构设计合理、操作使用方便、自动化智能化程度相对较高,能够有效提高表面负荷和泥道冲洗效率等优点。(The invention relates to a multidirectional flow sedimentation unit and a using method thereof, and the multidirectional flow sedimentation unit comprises a plurality of groups of multidirectional flow sedimentation components which are periodically arranged in rows or columns in sequence, each multidirectional flow component comprises a first flat plate, a plurality of second flat plates arranged at intervals, a plurality of square tubes arranged at intervals and a plurality of triangular tubes arranged at intervals, and the length direction of the first flat plate and the horizontal plane form an included angle of 60 degrees; a plurality of square tubes which are arranged at intervals are mutually parallel and are vertically arranged on one plate surface of the first flat plate; a plurality of second flat plates which are arranged at intervals are positioned on the same plane which is parallel to the first flat plate and are vertically arranged on the plane where the square pipe is positioned; the length directions of a plurality of triangular pipes arranged at intervals are mutually parallel and are positioned on the same plane, and the vertex angles of the adjacent triangular pipes are correspondingly and vertically arranged on the square pipe between the two adjacent second plates. The device has the advantages of reasonable structural design, convenient operation and use, relatively high degree of automation intelligence, capability of effectively improving the surface load and the mud channel washing efficiency and the like.)
1. A multi-directional flow precipitation unit characterized by: the unit comprises a plurality of groups of multi-directional flow sedimentation components which are periodically arranged in rows or columns in sequence, each multi-directional flow component comprises a first flat plate (1), a plurality of second flat plates (1') arranged at intervals, a plurality of square tubes (2) arranged at intervals and a plurality of triangular tubes (3) arranged at intervals, wherein the length direction of the first flat plate and the horizontal plane form an included angle of 60 degrees; a plurality of square tubes which are arranged at intervals are parallel to each other and are positioned on the same plane, and are vertically arranged on one plate surface of the first flat plate; a plurality of second flat plates which are arranged at intervals are positioned on the same plane which is parallel to the first flat plate and are vertically arranged on the plane where the square pipe is positioned; the triangular pipes are arranged at intervals, the length directions of the triangular pipes are mutually parallel and are positioned on the same plane, the vertex angles of the adjacent triangular pipes are correspondingly and vertically arranged on a square pipe between two adjacent second flat plates, the vertex angles of the triangular pipes between the two second flat plates are vertically arranged at the edge of one second flat plate, and a 2-4cm distance is reserved between the vertex angles of the triangular pipes and the other second flat plate to be used as a sludge discharge port (4) for horizontally flowing water to deposit suspended matters; the space enclosed by the inclined surface of the triangular pipe (3) connected with the sludge discharge port (4), the first flat plate and all the second flat plates is used as a suspended solid settling area and a sludge sliding area; wherein, the first flat plate of the multi-directional flow component of the next row or the next row is contacted with the planes of the two bottom angles of all the triangular tubes of the multi-directional flow component of the previous row or the previous row, and so on to form the multi-directional flow sedimentation component; one end of two ends of the square pipe (2) of each multi-directional flow assembly in the length direction is plugged, the other end of the square pipe is plugged and provided with a square pipe water inlet hole (5), and the square pipe water inlet hole (5) is connected with a square pipe washing water connecting pipe (6); the square pipe flushing water connecting pipe (6) is connected and supplied with water through a square pipe flushing water connecting branch pipe (7); in each multi-directional flow assembly, a plurality of square pipe water outlet holes (8) are formed in all square pipes in the same plane along the length direction, a single-side water inlet hole is formed in one outermost side square pipe in the same position of each multi-directional flow assembly, and the single-side water inlet hole is formed in the opposite side surface of a water inlet end to form a square pipe same-direction flushing water flow hole (9) in the same direction as the horizontal inlet water flow; a single-side water outlet hole is formed in the other outermost side square pipe at the same position of each multi-directional flow assembly, and is arranged on the opposite side surface of the water outlet end to form a square pipe reverse flushing water flow hole (10) opposite to the horizontal water inlet flow; two-side openings are formed in the two sides, corresponding to the outermost side square tubes, of all the square tubes between the two outermost side square tubes of each multi-directional flow assembly; the water outlet hole can effectively wash the inclined plane and the inclined flat plate of the triangular pipe for sedimentation, which can horizontally flow in and out water and enter and exit water from bottom to top; plugging two ends of a triangular pipe (3) in the length direction, wherein one end is plugged, the other end is plugged and provided with a triangular pipe water inlet hole (11), and the water inlet hole is connected with a triangular pipe flushing water connecting pipe (12); the triangular pipe flushing water connecting pipe (12) is connected and supplies water through a triangular pipe flushing water connecting branch pipe (13); the triangular pipe is provided with a plurality of triangular pipe water outlets (14) at different positions along the horizontal direction, and the water outlets are vertically downward, so that the inclined surfaces and inclined flat plates of the triangular pipe for sedimentation can be effectively washed; the water inlet holes of the vertical square pipe (2) and the triangular pipe (3) are filled with water through a washing water inlet main pipe, and the water inlet main pipe is connected with a branch pipe (7) and a square pipe washing water connecting pipe (6) through square pipe washing water to realize the water inlet and distribution of the washing water of the square pipe (2); the water inlet main pipe is connected with a triangular pipe flushing water connecting pipe (12) through a triangular pipe flushing water connecting branch pipe (13), and water inlet and water distribution of the triangular pipe (3) flushing water are achieved.
2. A multi-directional flow precipitation unit according to claim 1, wherein: the first flat plate, the second flat plate, the square tube (2) and the triangular tube (3) are made of stainless steel, aluminum alloy, rigid polyvinyl chloride or ABS resin.
3. A multi-directional flow precipitation unit according to claim 2, wherein: the first flat plate, the second flat plate, the square tube (2) and the triangular tube (3) are mutually fixed in a welding, riveting or bonding mode.
4. A multi-directional flow precipitation unit according to claim 3, wherein: the top angle and the two bottom angles of the triangular pipe (3) are both 60 degrees, correspondingly, the included angle between the inclined plate of the triangular pipe and the horizontal plane is 60 degrees, and the lower bottom surface is parallel to the horizontal plane.
5. A multi-directional flow precipitation unit according to claim 4, wherein: the multi-directional flow sedimentation unit also comprises an automatic control system, wherein the automatic control system comprises a PLC (programmable logic controller), a valve control assembly, a high-pressure pump control assembly and a water quality online detection sensor; the PLC is connected with the valve control assembly and the high-pressure pump control assembly; the water quality on-line detection sensor is arranged at the water inlet end and the water outlet end of the multi-directional flow precipitation unit and sends a detected real-time water quality signal to the PLC; the PLC compares the received real-time water quality signal with a preset corresponding threshold value after data conversion, stores the comparison result and the running time in a storage module of the controller, and judges whether to start a flushing process and select a corresponding flushing scheme according to the comparison result; the flushing process comprises the steps that the PLC sends out an instruction for opening the valve control assembly and the high-pressure pump control assembly, opens the corresponding valve and the high-pressure pump, sends out an instruction for closing the valve control assembly and the high-pressure pump control assembly, and closes the corresponding valve and the high-pressure pump; the flushing scheme comprises stopping water inlet of the device, starting the flushing high-pressure pump, simultaneously starting one or more groups of valve control assemblies to adjust flushing different areas and flushing time, and controlling pressure and flow of flushing water through the water pump frequency conversion assembly.
6. A multi-directional flow precipitation unit according to claim 5, wherein: the multi-directional flow sedimentation unit also comprises a sludge collection hopper, wherein the sludge collection hopper is arranged below the multi-directional flow sedimentation unit and is provided with a plurality of groups of sludge level meter sensors; the multiple groups of mud level meter sensors are connected with a PLC (programmable logic controller) through data signals; the bottom of the sludge collecting hopper is provided with an automatic opening and closing plate or a valve which is connected with a PLC (programmable logic controller); a spiral mud scraper or a perforated mud pipe is also arranged in the sludge collecting hopper; the automatic opening and closing plates or valves at corresponding different positions are opened by the PLC according to the mud level meter sensor and the running time, so that timed and quantitative automatic sludge discharge is realized.
7. A multi-directional flow precipitation unit according to claim 6, wherein: the multi-directional flow sedimentation unit also comprises a washing water storage tank, and the water inlet of the washing water storage tank is the water outlet of the multi-directional flow sedimentation device; the water inlet of washing water holding vessel sets up filtering component, filtering component includes filter screen and ultrafilter unit, prevents the jam of sparge water to multidirectional flow precipitation unit flushing hole, ultrafilter includes any kind or its combination in the cotton, reverse osmosis membrane, the milipore filter of pp.
8. Use of a multi-directional flow precipitation unit according to claim 7, characterized in that it comprises the following steps:
1) the first flat plate, the second flat plate, the square tube and the triangular tube are arranged to form a multi-directional flow sedimentation assembly and are mutually fixed in a welding, riveting or bonding mode; a plurality of groups of multidirectional flow sedimentation components are sequentially arranged in rows or columns to form a whole multidirectional flow sedimentation unit; the number and the size of the first flat plate, the second flat plate, the square tube and the triangular tube are adjusted according to the actual water treatment amount and the application condition;
2) the water to be treated can realize the multidirectional flow state precipitation treatment process of horizontal flow water inlet and outlet and water inlet and outlet from bottom to top, wherein the horizontal flow water inlet firstly enters the horizontal flow water inlet end of the multidirectional flow precipitation unit, solid suspended matters are continuously precipitated on the inclined surface parts of the second flat plate and the triangular pipe in the process of passing through the inclined surface parts of the second flat plate and the triangular pipe, and the water still horizontally moves, so that the solid-liquid separation of the water to be treated is realized; the solid suspension deposited on the inclined plane parts of the second flat plate and the triangular pipe slides downwards along the inclined plate to a sludge discharge port to enter a sludge discharge channel; the water enters from bottom to top and firstly enters the lower inflow water inlet end of the multi-directional flow precipitation unit, solid suspended matters are continuously precipitated on the first flat plate part in the process of inclining the first flat plate through the sludge discharge channel, and the water still moves upwards, so that the solid-liquid separation of the water to be treated is realized; the horizontal inflow water and the solid suspended matters precipitated by the inflow water from bottom to top are converged, slide down to the lowest end of the multi-directional flow precipitation unit along the first flat plate and then fall into the sludge collection hopper;
3) starting a flushing mode: the multi-directional flow sedimentation unit carries out the flushing process without stopping the water inlet of the device, the flushing high-pressure pump is firstly started in the flushing process, one or more groups of valves are simultaneously started to adjust the flushing different areas and the flushing time, and the pressure and the flow of the flushing water are controlled by the water pump frequency conversion assembly; the flushing intensity and time are adjusted according to the actual situation;
4) after the washing is finished, the washed and fallen sludge is continuously precipitated to the sludge collecting hopper. Sequentially closing equipment such as a pump, a valve and the like according to a set program to finish a flushing process; and the like, and the operation is repeated in cycles.
Technical Field
The invention relates to the technical field of solid-liquid separation in water treatment, in particular to a multi-directional flow precipitation unit and a using method thereof.
Background
Precipitation is an important process for removing suspended substances from water. The development and application of efficient precipitation processes are always the focus of attention. At present, the widely applied high-efficiency sedimentation process is based on the shallow pool theory proposed by Harvest, and the sedimentation units are filled with sedimentation components such as inclined tubes or inclined plates, and the process types such as an inclined plate sedimentation tank, an inclined tube sedimentation tank, a labyrinth inclined plate sedimentation tank and the like are developed in sequence. The sedimentation process adopting the inclined tube or inclined plate structure can effectively increase the sedimentation efficiency, but the problem that the inclined tube (inclined plate) is blocked by flocs and the like can occur in the actual use process, and the sedimentation effect is seriously influenced.
As early as the filing date of the present application, the applicant obtained patent publication numbers by search: CN101190389A, it provides a horizontal tube precipitation process, and this process proposes a precipitation mode to be beneficial to reduce the precipitation of suspended matter in the water flow direction, and improves the precipitation separation efficiency, but it is proved by multiple field practices and theories that: the requirement on the inflow flow state is high, so that the designed surface load is low, and the problems that a mud channel flushing system is complex and the flushing efficiency is not high exist. The present invention is based on the background of the present invention, and aims to provide a multi-directional flow precipitation unit with high treatment efficiency and a method for using the same to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to: the multi-directional flow sedimentation unit and the use method thereof have the advantages of reasonable structural design, convenient operation and use, relatively high degree of automation intelligence, capability of effectively improving the surface load and the sludge channel washing efficiency and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-directional flow precipitation unit comprises a plurality of groups of multi-directional flow precipitation components which are periodically arranged in sequence in a row or a row, wherein each multi-directional flow component comprises a first flat plate, a plurality of second flat plates arranged at intervals, a plurality of square tubes arranged at intervals and a plurality of triangular tubes arranged at intervals, and the length direction of the first flat plate and the horizontal plane form an included angle of 60 degrees; a plurality of square tubes which are arranged at intervals are parallel to each other and are positioned on the same plane, and are vertically arranged on one plate surface of the first flat plate; a plurality of second flat plates which are arranged at intervals are positioned on the same plane which is parallel to the first flat plate and are vertically arranged on the plane where the square pipe is positioned; the triangular pipes are arranged at intervals, the length directions of the triangular pipes are mutually parallel and are positioned on the same plane, the vertex angles of the adjacent triangular pipes are correspondingly and vertically arranged on a square pipe between two adjacent second flat plates, the vertex angles of the triangular pipes between the two second flat plates are vertically arranged at the edge of one second flat plate, and a 2-4cm distance is reserved between the vertex angles of the triangular pipes and the other second flat plate to be used as a sludge discharge port for settling suspended matters in the horizontal flow water inlet; a space surrounded by the inclined plane of the triangular pipe connected with the sludge discharge port, the first flat plate and all the second flat plates is used as a suspended solid settling area and a sludge sliding area; wherein, the first flat plate of the multi-directional flow component of the next row or the next row is contacted with the planes of the two bottom angles of all the triangular tubes of the multi-directional flow component of the previous row or the previous row, and so on to form the multi-directional flow sedimentation component; one end of two ends of the square pipe of each multi-directional flow assembly in the length direction is plugged, the other end of the two ends is plugged and provided with a square pipe water inlet hole, and the square pipe water inlet hole is connected with a square pipe flushing water connecting pipe; the square pipe flushing water connecting pipe is connected and supplies water through a square pipe flushing water connecting branch pipe; in each multi-directional flow assembly, a plurality of square pipe water outlet holes are formed in all square pipes in the same plane along the length direction, a single-side water inlet hole is formed in one outermost side square pipe in the same position of each multi-directional flow assembly, and the single-side water inlet hole is formed in the opposite side surface of a water inlet end to form a square pipe same-direction washing water flow hole in the same direction as the horizontal water inlet flow; a single-side water outlet hole is formed in the other outermost side square pipe at the same position of each multi-directional flow assembly, and is formed in the opposite side surface of the water outlet end to form a square pipe reverse flushing water flow hole in the direction opposite to the horizontal water inlet flow; two-side openings are formed in the two sides, corresponding to the outermost side square tubes, of all the square tubes between the two outermost side square tubes of each multi-directional flow assembly; the water outlet hole can effectively wash the inclined plane and the inclined flat plate of the triangular pipe for sedimentation, which can horizontally flow in and out water and enter and exit water from bottom to top; plugging two ends of the triangular pipe in the length direction, wherein one end is plugged, the other end is plugged and provided with a triangular pipe water inlet hole, and the water inlet hole is connected with a triangular pipe flushing water connecting pipe; the triangular pipe flushing water connecting pipe is connected and supplies water through a triangular pipe flushing water connecting branch pipe; the triangular pipe is provided with a plurality of triangular pipe water outlets at different positions along the horizontal direction, and the water outlets are vertically downward, so that the inclined surfaces and inclined flat plates of the triangular pipe for sedimentation can be effectively washed; the water inlet holes of the vertical square tubes and the triangular tubes are filled with water through a washing water inlet main pipe, and the water inlet main pipe is connected with a branch pipe and a square tube washing water connecting pipe through square tube washing water, so that the square tube washing water is filled with water and distributed; the water inlet main pipe is connected with the triangular pipe flushing water connecting pipe through the triangular pipe flushing water connecting branch pipe, and water inlet and water distribution of the triangular pipe flushing water are achieved.
As a further optimization of the scheme, the first flat plate, the second flat plate, the square tube and the triangular tube are made of stainless steel, aluminum alloy, rigid polyvinyl chloride or ABS resin.
As a further optimization of the scheme, the first flat plate, the second flat plate, the square tube and the triangular tube are mutually fixed in a welding, riveting or bonding mode.
As a further optimization of the scheme, the top angle and the two bottom angles of the triangular pipe are both 60 degrees, correspondingly, the included angle between the inclined plate of the triangular pipe and the horizontal plane is 60 degrees, and the lower bottom surface is parallel to the horizontal plane.
As a further optimization of the scheme, the multi-directional flow precipitation unit further comprises an automatic control system, wherein the automatic control system comprises a PLC (programmable logic controller), a valve control assembly, a high-pressure pump control assembly and a water quality online detection sensor; the PLC is connected with the valve control assembly and the high-pressure pump control assembly; the water quality on-line detection sensor is arranged at the water inlet end and the water outlet end of the multi-directional flow precipitation unit and sends a detected real-time water quality signal to the PLC; the PLC compares the received real-time water quality signal with a preset corresponding threshold value after data conversion, stores the comparison result and the running time in a storage module of the controller, and judges whether to start a flushing process and select a corresponding flushing scheme according to the comparison result; the flushing process comprises the steps that the PLC sends out an instruction for opening the valve control assembly and the high-pressure pump control assembly, opens the corresponding valve and the high-pressure pump, sends out an instruction for closing the valve control assembly and the high-pressure pump control assembly, and closes the corresponding valve and the high-pressure pump; the flushing scheme comprises stopping water inlet of the device, starting the flushing high-pressure pump, simultaneously starting one or more groups of valve control assemblies to adjust flushing different areas and flushing time, and controlling pressure and flow of flushing water through the water pump frequency conversion assembly.
As a further optimization of the scheme, the multi-directional flow sedimentation unit further comprises a sludge collection hopper, wherein the sludge collection hopper is arranged below the multi-directional flow sedimentation unit and is provided with a plurality of groups of sludge level meter sensors; the multiple groups of mud level meter sensors are connected with a PLC (programmable logic controller) through data signals; the bottom of the sludge collecting hopper is provided with an automatic opening and closing plate or a valve which is connected with a PLC (programmable logic controller); a spiral mud scraper or a perforated mud pipe is also arranged in the sludge collecting hopper; the automatic opening and closing plates or valves at corresponding different positions are opened by the PLC according to the mud level meter sensor and the running time, so that timed and quantitative automatic sludge discharge is realized.
As a further optimization of the above scheme, the multi-directional flow precipitation unit further comprises a washing water storage tank, and water inlet of the washing water storage tank is water outlet of the multi-directional flow precipitation device; the water inlet of washing water holding vessel sets up filtering component, filtering component includes filter screen and ultrafilter unit, prevents the jam of sparge water to multidirectional flow precipitation unit flushing hole, ultrafilter includes any kind or its combination in the cotton, reverse osmosis membrane, the milipore filter of pp.
The use method of the multi-directional flow precipitation unit comprises the following steps:
1) the first flat plate, the second flat plate, the square tube and the triangular tube are arranged to form a multi-directional flow sedimentation assembly and are mutually fixed in a welding, riveting or bonding mode; a plurality of groups of multidirectional flow sedimentation components are sequentially arranged in rows or columns to form a whole multidirectional flow sedimentation unit; the number and the size of the first flat plate, the second flat plate, the square tube and the triangular tube are adjusted according to the actual water treatment amount and the application condition;
2) the water to be treated can realize the multidirectional flow state precipitation treatment process of horizontal flow water inlet and outlet and water inlet and outlet from bottom to top, wherein the horizontal flow water inlet firstly enters the horizontal flow water inlet end of the multidirectional flow precipitation unit, solid suspended matters are continuously precipitated on the inclined surface parts of the second flat plate and the triangular pipe in the process of passing through the inclined surface parts of the second flat plate and the triangular pipe, and the water still horizontally moves, so that the solid-liquid separation of the water to be treated is realized; the solid suspension deposited on the inclined plane parts of the second flat plate and the triangular pipe slides downwards along the inclined plate to a sludge discharge port to enter a sludge discharge channel; the water enters from bottom to top and firstly enters the lower inflow water inlet end of the multi-directional flow precipitation unit, solid suspended matters are continuously precipitated on the first flat plate part in the process of inclining the first flat plate through the sludge discharge channel, and the water still moves upwards, so that the solid-liquid separation of the water to be treated is realized; the horizontal inflow water and the solid suspended matters precipitated by the inflow water from bottom to top are converged, slide down to the lowest end of the multi-directional flow precipitation unit along the first flat plate and then fall into the sludge collection hopper;
3) starting a flushing mode: the multi-directional flow sedimentation unit carries out the flushing process without stopping the water inlet of the device, the flushing high-pressure pump is firstly started in the flushing process, one or more groups of valves are simultaneously started to adjust the flushing different areas and the flushing time, and the pressure and the flow of the flushing water are controlled by the water pump frequency conversion assembly; the flushing intensity and time are adjusted according to the actual situation;
4) after the washing is finished, the washed and fallen sludge is continuously precipitated to the sludge collecting hopper. Sequentially closing equipment such as a pump, a valve and the like according to a set program to finish a flushing process; and the like, and the operation is repeated in cycles.
The multi-directional flow precipitation unit and the use method thereof have the following beneficial effects:
(1) structural design is more reasonable, can realize that the multidirectional flow is intake, and is lower to the flow state requirement of intaking, can realize getting rid of pollutants such as suspended solid, colloid, heavy metal and phosphorus in the high-efficient water of getting rid of. The process has the advantages of good treatment effect, high surface load, small occupied area, simple structure, low treatment cost and the like, and has better economic and application values.
(2) Through the controller, the valve control assembly, the high-pressure pump control assembly and the water quality online detection sensor, whether a flushing process is started or not and a corresponding flushing scheme is selected can be judged according to a comparison result, and the reliability of the overall operation is high; in addition, the detection of a plurality of groups of sludge level sensors can conveniently and accurately ensure the reliable operation of sludge discharge and collection of the whole device.
Drawings
FIG. 1 is a schematic view of a triangular tube structure of a multi-directional flow precipitation unit of the present invention.
FIG. 2 is a schematic diagram of a square tube structure of the multi-directional flow precipitation unit of the present invention.
FIG. 3 is a schematic structural view of the connection of the flat plate, the triangular tube and the square tube of the multi-directional flow precipitation unit of the present invention.
Fig. 4 is another schematic view of fig. 3.
FIG. 5 is a schematic cross-sectional view of the horizontal flow inlet end of the multi-directional flow precipitation unit of the present invention.
FIG. 6 is a schematic cross-sectional view of the horizontal outflow end of the multi-directional sedimentation unit of the present invention.
FIG. 7 is a schematic cross-sectional view of a water inlet end of a multi-directional flow sedimentation unit from bottom to top, wherein the left side is a horizontal flow water inlet end.
Fig. 8-9 are schematic diagrams of the three-dimensional structure of the multi-directional flow sedimentation unit according to the present invention from different viewing angles, wherein the left side is the horizontal flow water inlet end.
Wherein: 1 is a first plate; 1' is a second plate; 2 is a square tube; 3 is a triangular tube; 4 is a sludge discharge port; 5 is a square pipe water inlet; 6 is a square pipe flushing water connecting pipe; 7, square pipe flushing water is connected with a branch pipe; 8 is a square tube water outlet; 9 is a square tube same-direction flushing water flow hole; 10 is a square tube reverse flushing water flow hole; 11 is a triangular tube water outlet; 12 is a triangular pipe flushing water connecting pipe; a triangular pipe flushing water connecting
Detailed Description
The multi-directional flow precipitation unit and its method of use of the present invention are described in detail below with reference to FIGS. 1-9.
A multi-directional flow precipitation unit comprises a plurality of groups of multi-directional flow precipitation components which are periodically arranged in line or row in sequence, wherein each multi-directional flow component comprises a first
The first flat plate, the second flat plate, the
The first flat plate, the second flat plate, the
The top angle and the two bottom angles of the
The multi-directional flow sedimentation unit also comprises an automatic control system, wherein the automatic control system comprises a PLC (programmable logic controller), a valve control assembly, a high-pressure pump control assembly and a water quality online detection sensor; the PLC is connected with the valve control assembly and the high-pressure pump control assembly; the water quality on-line detection sensor is arranged at the water inlet end and the water outlet end of the multi-directional flow precipitation unit and sends a detected real-time water quality signal to the PLC; the PLC compares the received real-time water quality signal with a preset corresponding threshold value after data conversion, stores the comparison result and the running time in a storage module of the controller, and judges whether to start a flushing process and select a corresponding flushing scheme according to the comparison result; the flushing process comprises the steps that the PLC sends out an instruction for opening the valve control assembly and the high-pressure pump control assembly, opens the corresponding valve and the high-pressure pump, sends out an instruction for closing the valve control assembly and the high-pressure pump control assembly, and closes the corresponding valve and the high-pressure pump; the flushing scheme comprises stopping water inlet of the device, starting the flushing high-pressure pump, simultaneously starting one or more groups of valve control assemblies to adjust flushing different areas and flushing time, and controlling pressure and flow of flushing water through the water pump frequency conversion assembly.
The multi-directional flow sedimentation unit also comprises a sludge collection hopper, wherein the sludge collection hopper is arranged below the multi-directional flow sedimentation unit and is provided with a plurality of groups of sludge level meter sensors; the multiple groups of mud level meter sensors are connected with a PLC (programmable logic controller) through data signals; the bottom of the sludge collecting hopper is provided with an automatic opening and closing plate or a valve which is connected with a PLC (programmable logic controller); a spiral mud scraper or a perforated mud pipe is also arranged in the sludge collecting hopper; the automatic opening and closing plates or valves at corresponding different positions are opened by the PLC according to the mud level meter sensor and the running time, so that timed and quantitative automatic sludge discharge is realized.
The multi-directional flow sedimentation unit also comprises a washing water storage tank, and the water inlet of the washing water storage tank is the water outlet of the multi-directional flow sedimentation device; the water inlet of washing water holding vessel sets up filtering component, filtering component includes filter screen and ultrafilter unit, prevents the jam of sparge water to multidirectional flow precipitation unit flushing hole, ultrafilter includes any kind or its combination in the cotton, reverse osmosis membrane, the milipore filter of pp.
The use method of the multi-directional flow precipitation unit comprises the following steps:
1) the first flat plate, the second flat plate, the square tube and the triangular tube are arranged to form a multi-directional flow sedimentation assembly and are mutually fixed in a welding, riveting or bonding mode; a plurality of groups of multidirectional flow sedimentation components are sequentially arranged in rows or columns to form a whole multidirectional flow sedimentation unit; the number and the size of the first flat plate, the second flat plate, the square tube and the triangular tube are adjusted according to the actual water treatment amount and the application condition;
2) the water to be treated can realize the multidirectional flow state precipitation treatment process of horizontal flow water inlet and outlet and water inlet and outlet from bottom to top, wherein the horizontal flow water inlet firstly enters the horizontal flow water inlet end of the multidirectional flow precipitation unit, solid suspended matters are continuously precipitated on the inclined surface parts of the second flat plate and the triangular pipe in the process of passing through the inclined surface parts of the first flat plate and the triangular pipe, and the water still horizontally moves, so that the solid-liquid separation of the water to be treated is realized; the solid suspension deposited on the inclined plane parts of the second flat plate and the triangular pipe slides downwards along the inclined plate to a sludge discharge port to enter a sludge discharge channel; the water enters from bottom to top and firstly enters the lower inflow water inlet end of the multi-directional flow precipitation unit, solid suspended matters are continuously precipitated on the first flat plate part in the process of inclining the first flat plate through the sludge discharge channel, and the water still moves upwards, so that the solid-liquid separation of the water to be treated is realized; the horizontal inflow water and the solid suspended matters precipitated by the inflow water from bottom to top are converged, slide down to the lowest end of the multi-directional flow precipitation unit along the first flat plate and then fall into the sludge collection hopper;
3) starting a flushing mode: the multi-directional flow sedimentation unit does not need to stop the water inlet of the device during the flushing process. In the flushing process, a flushing high-pressure pump is started, one or more groups of valves are started at the same time to adjust flushing different areas and flushing time, and the pressure and the flow of flushing water are controlled by a water pump frequency conversion assembly; the flushing intensity and time are adjusted according to the actual situation;
4) after the washing is finished, the washed and fallen sludge is continuously precipitated to the sludge collecting hopper. Sequentially closing equipment such as a pump, a valve and the like according to a set program to finish a flushing process; and the like, and the operation is repeated in cycles.
A specific example of an application is given below:
the sewage treatment in the embodiment is a mixed solution of water and sludge entering an aerobic tank of a certain urban sewage treatment plant into a radial flow type secondary sedimentation tank, and the fluctuation range of the sludge concentration is 5-6 g/L; the surface load of the secondary sedimentation tank before reconstruction is 0.82m3/m2H. According to the design scheme of energy expansion reconstruction of the sewage treatment plant, a plurality of groups of multi-directional flow sedimentation units are arranged in a secondary sedimentation tank, the design surface load of the unit cross section is 30.5m3/m2H. The filling volume of the multi-directional flow sedimentation unit accounts for 32 percent of the effective sedimentation volume of the whole secondary sedimentation tank. Therefore, after the energy expansion reconstruction, the surface load after the secondary sedimentation tank is checked is 10.32m3/m2H. Compared with the secondary sedimentation tank before modification, the surface load of the modified secondary sedimentation tank is improved by 12.6 times, and correspondingly, the processing capacity is also improved by 12.6 times. When the water inlet amount of the secondary sedimentation tank after reconstruction is increased to about 10 times of that before reconstruction, the suspended matters in the outlet water are still stable below 10 mg/L.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
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