阅读说明：本技术 一种工业废水的处理方法及处理装置 (Industrial wastewater treatment method and treatment device ) 是由 伏廷寿 杨娅 于 2019-09-19 设计创作，主要内容包括：本发明公开了一种工业废水的处理方法及处理装置,所述处理方法是先对工业废水进行过滤,去除悬浮固体颗粒,然后向废水中加入颗粒状的植物基活性炭并混合均匀,搅拌2～6h,再过滤；所述处理装置包括罐体、水斗、排放电磁阀、链条导轨、链条式网带、升降搅拌装置。本发明的处理方法可有效去除工业废水中COD,去除效率可达90％以上；本发明处理装置采用上部搅拌区、下部过滤区以及升降搅拌装置的一体化结构,具有结构紧凑、空间利用率高、操作方便的优点。(The invention discloses a treatment method and a treatment device for industrial wastewater, wherein the treatment method comprises the steps of filtering the industrial wastewater to remove suspended solid particles, adding granular plant-based activated carbon into the wastewater, uniformly mixing, stirring for 2-6 hours, and filtering; the processing device comprises a tank body, a water bucket, a discharge electromagnetic valve, a chain guide rail, a chain type mesh belt and a lifting stirring device. The treatment method can effectively remove COD in the industrial wastewater, and the removal efficiency can reach more than 90%; the treatment device adopts an integrated structure of the upper stirring area, the lower filtering area and the lifting stirring device, and has the advantages of compact structure, high space utilization rate and convenient operation.)

1. The method for treating the industrial wastewater is characterized by firstly filtering the industrial wastewater to remove suspended solid particles, then adding granular plant-based activated carbon into the wastewater, uniformly mixing, stirring for 2-6 hours, and then filtering.

2. The method for treating industrial wastewater according to claim 1, wherein the plant-based activated carbon is obtained by mixing sulfuric acid activated plant-based activated carbon and barium chloride activated plant-based activated carbon in a mass ratio of 1: 0.1-10.

3. The method for treating industrial wastewater according to claim 2, wherein the sulfuric acid activated plant-based activated carbon is prepared by pulverizing waste plant materials, pyrolyzing the pulverized waste plant materials in a pyrolysis furnace at 450-750 ℃ for 2.5-3 hours, introducing a protective gas during pyrolysis, washing the pyrolysis product to remove water-soluble substances, and soaking the pyrolysis product in 2% (v/v) H₂SO₄The incubator is treated for 10-20 hours at 100-200 ℃, washed to be neutral and then dried.

4. The method for treating industrial wastewater according to claim 2, wherein the barium chloride activated plant-based activated carbon is prepared by crushing waste plant materials, pyrolyzing the crushed materials in a pyrolysis furnace at 450-750 ℃ for 2.5-3 hours, introducing protective gas during pyrolysis, washing the materials to remove water-soluble substances, and immersing the materials in 2% (w/v)BaCl₂The incubator is treated for 10 to 20 hours at the temperature of 100 to 200 ℃, and then washed to remove BaCl₂And then drying.

5. The method for treating industrial wastewater according to claim 3 or 4, wherein the waste plant material is waste plant stems and/or waste fruit shells.

6. A treatment device for realizing the treatment method of the industrial wastewater according to any one of claims 1 to 5, which is characterized by comprising a tank body (1), wherein a water bucket (2) is arranged in the middle of the tank body (1) to divide the tank body (1) into an upper layer space and a lower layer space, the upper layer space is a stirring area, the lower layer space is a filtering area, a discharge electromagnetic valve (3) is arranged at the bottom of the water bucket (2), the inner wall of the tank body (1) at the upper part of the stirring area and the inner wall of the tank body (1) at the upper part of the filtering area are both provided with inclined chain guide rails (4), the side wall of the tank body (1) opposite to the higher end of each chain guide rail (4) is provided with a loading and taking port (5), the stirring area and the filtering area are both provided with chain type mesh belts (6), the two sides of each chain type mesh belt (6) are respectively clamped into the corresponding chain, chain formula guipure (6) surface is equipped with the filter layer, jar body (1) top is equipped with waste water input mouth (7), plant base active carbon input mouth (8), jar body (1) bottom is equipped with discharge port (9), jar body (1) top is equipped with the case mouth, and case mouth top is equipped with and falls to the lift agitating unit in the stirring district.

7. The method for treating the industrial wastewater according to claim 6, wherein a cleaning cabinet (10) is arranged outside the loading and unloading port (5), the higher end of the chain guide rail (4) extends out of the loading and unloading port (5), bends downwards and extends to the lower part in the cleaning cabinet (10), two ends of the chain type mesh belt (6) are respectively provided with a hook (11), the top of the cleaning cabinet (10) is provided with a first winding machine (13), the bottom in the cleaning cabinet (10) is provided with a first fixed pulley (14), a rope of the first winding machine (13) is guided by the first fixed pulley (14) and is connected with the hook (11) of the chain type mesh belt (6) close to the loading and unloading port (5), the side surface in the cleaning cabinet (10) is sequentially provided with a plurality of flushing heads (15) from top to bottom, and the bottom of the cleaning cabinet (10) is provided with a cleaning discharge port (16);

and a second fixed pulley (17) is arranged above the lower end of the chain guide rail (4) in the tank body (1), a second winch (18) is arranged on the outer side of the tank body (1) opposite to the second fixed pulley (17), and a rope of the second winch (18) penetrates through the side wall of the tank body (1) and is guided by the second fixed pulley (17) to be connected with a hook (11) of the chain type mesh belt (6) far away from the loading and taking port (5).

8. The method for treating industrial wastewater according to claim 6 or 7, wherein the chain type mesh belt (6) is formed in a downward arc shape.

9. The method for treating industrial wastewater according to claim 7, wherein a stopper (12) is provided at the lower end of the chain guide (4) in the cleaning tank (10).

10. The method for treating industrial wastewater according to claim 6, wherein the lifting stirring device comprises a vertically downward stirring motor (19), a power output shaft of the stirring motor (19) is connected with the stirring paddle (20), and the top of the stirring motor (19) is connected with the lifting cylinder through a connecting frame.

Technical Field

The invention belongs to the technical field of wastewater treatment, and particularly relates to a treatment method and a treatment device for industrial wastewater.

Background

The industrial wastewater refers to wastewater and waste liquid generated in the industrial production process, and contains industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. Industrial wastewater is of various types and complex components, and a large group of components are organic substances, which are generally expressed by Chemical Oxygen Demand (COD). Common treatment processes comprise a flocculation method, a Feton oxidation method, a biological method and the like, but the prior art has the defect of poor treatment effect, and some treatment processes have good treatment effect but strict process conditions and even generate secondary pollution. The industrial wastewater treatment equipment in the prior art is usually configured by a complete system, and has the disadvantages of large occupied area, low space utilization rate and inconvenient operation. Therefore, it is necessary to develop a method and an apparatus for treating industrial wastewater, which can solve the above problems.

Disclosure of Invention

The first purpose of the invention is to provide a method for treating industrial wastewater.

The first purpose of the invention is realized by filtering industrial wastewater to remove suspended solid particles, then adding granular plant-based activated carbon into the wastewater, uniformly mixing, stirring for 2-6 h, and then filtering.

A second object of the present invention is to provide a treatment apparatus for realizing a treatment method for industrial wastewater.

The second purpose of the invention is realized by comprising a tank body, wherein a water bucket is arranged in the middle part in the tank body to divide the tank body into an upper layer space and a lower layer space, the upper layer space is a stirring area, the lower layer space is a filtering area, the bottom of the water bucket is provided with a discharge electromagnetic valve, the inner walls of the tank body at the upper part of the stirring area and the tank body at the upper part of the filtering area are both provided with inclined chain guide rails, the side wall of the tank body opposite to the higher end of the chain guide rails is provided with a loading and unloading opening, the stirring area and the filtering area are both provided with chain type mesh belts, two sides of the chain type mesh belts are respectively clamped into corresponding chain guide rails, the chain type mesh belts are in sliding fit with the chain guide rails, the surface of the chain type mesh belts is provided with a filtering layer, the top of the tank body is provided with a wastewater inlet and a plant-based activated carbon inlet, the bottom of the tank body is provided with a discharge outlet, tank body top is equipped with the case mouth, and case mouth top is equipped with and falls to the lift agitating unit in the stirring district.

The invention has the beneficial effects that: the treatment method comprises the steps of filtering suspended solid particles in industrial wastewater, adding plant-based activated carbon, stirring, and filtering; the plant-based activated carbon is prepared by mixing sulfuric acid activated plant-based activated carbon and barium chloride activated plant-based activated carbon; the treatment method can effectively remove COD in the industrial wastewater, and the removal efficiency can reach more than 90%; the treatment device adopts an integrated structure of the upper stirring area, the lower filtering area and the lifting stirring device, and has the advantages of compact structure, high space utilization rate and convenient operation; the chain type mesh belt of the processing device can move in the box body and the cleaning box, and the chain type mesh belt and the filter layer are automatically washed by matching with the cleaning box, so that the automation is favorably realized, and the labor intensity of workers is effectively reduced; in the cleaning process of the cleaning box of the filtering area, the attached plant-based activated carbon is discharged along with the cleaning water, so that the recovery of the plant-based activated carbon is facilitated.

Drawings

FIG. 1 is a schematic view of a processing apparatus according to the present invention;

FIG. 2 is a schematic view of the end structure of a chain belt;

FIG. 3 is a schematic view showing a structure of a state in which a chain belt type mesh belt is moved into a cleaning cabinet in the treatment apparatus according to the present invention;

in the figure: 1-tank body, 2-water bucket, 3-discharge electromagnetic valve, 4-chain guide rail, 5-loading and taking port, 6-chain mesh belt, 7-wastewater input port, 8-plant-based activated carbon input port, 9-discharge port, 10-cleaning cabinet, 11-hook, 12-stop block, 13-first winding machine, 14-first fixed pulley, 15-flushing head, 16-cleaning discharge port, 17-second fixed pulley, 18-second winding machine, 19-stirring motor and 20-stirring paddle.

Detailed Description

The invention is further described with reference to the accompanying drawings, but the invention is not limited in any way, and any alterations or substitutions based on the teaching of the invention are within the scope of the invention.

The method comprises the steps of filtering industrial wastewater to remove suspended solid particles, adding granular plant-based activated carbon into the wastewater, uniformly mixing, stirring for 2-6 hours, and filtering.

Preferably, the plant-based activated carbon is obtained by mixing sulfuric acid activated plant-based activated carbon and barium chloride activated plant-based activated carbon according to a mass ratio of 1: 0.1-10.

Preferably, the preparation method of the sulfuric acid activated plant-based activated carbon comprises the steps of crushing the waste plant raw materials, then pyrolyzing the crushed waste plant raw materials in a pyrolysis furnace for 2.5 to 3 hours at the temperature of 450 to 750 ℃, and introducing protection during pyrolysisGas, washed to remove water-soluble substances, and then soaked in 2% (v/v) H₂SO₄The incubator is treated for 10-20 hours at 100-200 ℃, washed to be neutral and then dried.

Preferably, the preparation method of the barium chloride activated plant-based activated carbon comprises the steps of crushing waste plant raw materials, pyrolyzing the crushed waste plant raw materials in a pyrolysis furnace at the temperature of 450-750 ℃ for 2.5-3 h, introducing protective gas during pyrolysis, washing the protective gas to remove water-soluble substances, and soaking the protective gas in 2% (w/v) BaCl₂The incubator is treated for 10 to 20 hours at the temperature of 100 to 200 ℃, and then washed to remove BaCl₂And then drying.

Preferably, the waste plant material is waste plant stems and/or waste fruit shells.

As shown in attached figures 1-3, the treatment device for realizing the treatment method of the industrial wastewater comprises a tank body 1, a water bucket 2 is arranged in the middle of the tank body 1 and divides the tank body 1 into an upper space and a lower space, the upper space is a stirring area, the lower space is a filtering area, a discharge electromagnetic valve 3 is arranged at the bottom of the water bucket 2, inclined chain guide rails 4 are arranged on the inner wall of the tank body 1 at the upper part of the stirring area and the inner wall of the tank body 1 at the upper part of the filtering area, a loading and taking opening 5 is arranged on the side wall of the tank body 1 opposite to the higher end of the chain guide rails 4, chain mesh belts 6 are arranged in the stirring area and the filtering area, two sides of each chain mesh belt 6 are respectively clamped into the corresponding chain guide rails 4, the chain mesh belts 6 are in sliding fit with the chain guide rails 4, a filter layer is arranged on the surface of the chain, the bottom of the tank body 1 is provided with a discharge port 9, the top of the tank body 1 is provided with a tank opening, and a lifting stirring device capable of lowering into a stirring area is arranged above the tank opening.

Preferably, the waste water inlet 7 is positioned above the higher end of the chain guide rail 4 in the tank body 1.

Preferably, a cleaning cabinet 10 is arranged outside the loading and unloading opening 5, a higher end of the chain guide rail 4 extends out of the loading and unloading opening 5, bends downwards and extends to the lower part of the interior of the cleaning cabinet 10, two ends of the chain type mesh belt 6 are respectively provided with a hook 11, the top of the cleaning cabinet 10 is provided with a first winch 13, the bottom of the interior of the cleaning cabinet 10 is provided with a first fixed pulley 14, a rope of the first winch 13 is guided by the first fixed pulley 14 and is connected with the hook 11 of the chain type mesh belt 6 close to the loading and unloading opening 5, the side surface of the interior of the cleaning cabinet 10 is sequentially provided with a plurality of washing heads 15 from top to bottom, and the bottom of the cleaning cabinet 10 is provided with a cleaning discharge opening 16;

the chain guide rail 4 is provided with a second fixed pulley 17 above the lower end in the tank body 1, the outer side of the tank body 1 opposite to the second fixed pulley 17 is provided with a second winch 18, and a rope of the second winch 18 passes through the side wall of the tank body 1, is guided by the second fixed pulley 17, and is connected with a hook 11 of the chain type mesh belt 6 far away from the loading and taking port 5.

Preferably, the chain type mesh belt 6 is downward arc-shaped, and the arc-shaped structure is beneficial to flowing of wastewater towards the lower end of the chain type mesh belt 6.

Preferably, a stop block 12 is provided at the lower end of the chain guide 4 in the washing cabinet 10.

Preferably, the lifting stirring device comprises a vertically downward stirring motor 19, a power output shaft of the stirring motor 19 is connected with a stirring paddle 20, and the top of the stirring motor 19 is connected with the lifting cylinder through a connecting frame.

The working principle and the working process of the processing device of the invention are as follows: firstly, industrial wastewater slowly flows into a stirring area from a wastewater inlet 7, the industrial wastewater is filtered while flowing on a chain type mesh belt 6, suspended solid particles are attached to a filter layer, and filtrate falls;

when the chain type mesh belt 6 in the stirring area needs to be cleaned, the first winch 13 and the second winch 18 are started, the first winch 13 winds up the rope, the second winch 18 discharges the rope, the chain type mesh belt 6 is dragged on the chain guide rail 4 to slide, and the chain type mesh belt 6 slides into the cleaning cabinet 10 from the box body 1; the water flow sprayed by the washing head 15 washes the chain type mesh belt 6 and the filter layer, and the washing water is discharged through the washing discharge port 16; after the clarification is finished, the process is repeated in a reverse direction, so that the chain type mesh belt 6 returns to the box body 1, and the filtration can be continued;

after the filtering in the stirring area is finished, the chain type mesh belt 6 is firstly moved into a cleaning cabinet 10; then plant-based activated carbon particles are added into the stirring area from the plant-based activated carbon adding port 8, then the stirring paddle is controlled by the lifting stirring device to fall into the wastewater in the stirring area, the stirring motor 19 is started, and the wastewater and the plant-based activated carbon particles are uniformly stirred and are continuously stirred for 2-6 hours by the stirring paddle;

then opening the discharge electromagnetic valve 3, slowly discharging the treated wastewater into a filtering area, filtering the wastewater while flowing on a chain type mesh belt 6 of the filtering area, attaching the plant-based activated carbon on a filtering layer, and discharging the filtrate from a discharge port 9;

when the chain type mesh belt 6 in the filtering area needs to be cleaned, the chain type mesh belt 6 is moved into the cleaning cabinet 10 to be cleaned according to the same cleaning process as the stirring area, after the cleaning is finished, the chain type mesh belt is moved back to the box body 1 to continue to be filtered, and the plant-based activated carbon is discharged and recovered from the cleaning discharge port 16 along with the cleaning water.

The present invention will be further described with reference to examples 1 to 13.