阅读说明：本技术 一种酸性废水处理硫化反应器 (Acidic wastewater treatment vulcanization reactor ) 是由 杨小明 刘峰彪 郑曦 刘艳丽 于 2020-05-13 设计创作，主要内容包括：本发明属于废水处理技术领域,具体是一种酸性废水处理硫化反应器,包括密封在一起的反应器壳体(1)和封头(2)；所述反应器壳体(1)底部设置放空口(3),并均匀设置若干个加药口(4)；所述反应器壳体(1)上还设置人孔(5)和视镜(6)；所述封头(2)上均布若干根进水管(7),任一个进水管(7)的进口侧设置加药支管(8)；所述封头(2)的侧面设置出水口(9),出水口外接U型管,在封头(2)上还设置进气口(10)和抽风口(11)；所述加药口(4)的数量与进水管(7)的数量相同；进水管(7)的出口与加药口的标高相同,且进水管(7)的出口与加药口一一对应。该反应器密封性能好,硫化反应中硫化药剂利用效率高。(The invention belongs to the technical field of wastewater treatment, and particularly relates to an acidic wastewater treatment vulcanization reactor, which comprises a reactor shell (1) and an end enclosure (2) which are sealed together; the bottom of the reactor shell (1) is provided with a vent (3) and a plurality of medicine adding ports (4) uniformly; a manhole (5) and a sight glass (6) are also arranged on the reactor shell (1); a plurality of water inlet pipes (7) are uniformly distributed on the end socket (2), and a dosing branch pipe (8) is arranged at the inlet side of any one water inlet pipe (7); a water outlet (9) is formed in the side face of the seal head (2), the water outlet is externally connected with a U-shaped pipe, and an air inlet (10) and an air suction opening (11) are formed in the seal head (2); the number of the medicine adding openings (4) is the same as that of the water inlet pipes (7); the outlet of the water inlet pipe (7) is the same as the elevation of the dosing port, and the outlet of the water inlet pipe (7) corresponds to the dosing port one by one. The reactor has good sealing performance and high utilization efficiency of the vulcanizing agents in the vulcanization reaction.)

1. An acidic wastewater treatment vulcanization reactor comprises a reactor shell (1) and a seal head (2) which are sealed together;

the device is characterized in that a vent (3) is arranged at the bottom of the reactor shell (1), and a plurality of dosing ports (4) are uniformly arranged; a manhole (5) and a sight glass (6) are also arranged on the reactor shell (1);

a plurality of water inlet pipes (7) are uniformly distributed on the end socket (2), and a dosing branch pipe (8) is arranged at the inlet side of any one water inlet pipe (7); a water outlet (9) is formed in the side surface of the seal head (2), and an air inlet (10) and an air suction opening (11) are formed in the seal head (2);

the number of the medicine adding openings (4) is the same as that of the water inlet pipes (7); the outlet of the water inlet pipe (7) is the same as the elevation of the dosing port, and the outlet of the water inlet pipe (7) corresponds to the dosing port one by one.

2. The acidic wastewater treatment vulcanization reactor of claim 1, characterized in that a stirrer (12) is disposed at the center of the head (2), and a stirring blade of the stirrer (12) is on the central axis of the reactor shell (1).

3. The acidic wastewater treatment vulcanization reactor of claim 1, characterized in that said water outlet (9) is externally connected with a U-shaped pipe.

4. The acidic wastewater treatment vulcanization reactor of claim 1, characterized in that the distance from the dosing port (4) to the bottom surface of the reactor shell (1) is 200-400 mm.

5. The acidic wastewater treatment vulcanization reactor of claim 1, wherein the number of dosing ports is four and the number of corresponding inlet tubes is four.

6. The acidic wastewater treatment vulcanization reactor of claim 1, wherein a gas path check valve is disposed on the air inlet.

7. The acidic wastewater treatment vulcanization reactor of any one of claims 1-6, characterized in that instrument mounting opening (13) is further provided on the head (2).

Technical Field

The invention belongs to the technical field of wastewater treatment, and particularly relates to a vulcanization reactor for acidic wastewater treatment.

Background

In the mining and smelting processes of nonferrous metals, acidic heavy metal wastewater is often generated. In the mining process of mines, the ratio of sulfide ores is very large, in the mining process of the ores, mine waste rock fields, mine pits and the like, under the action of various external factors, part of sulfide ores can be oxidized and decomposed to enter nearby water bodies to form acidic wastewater, the acidic wastewater contains a large amount of heavy metals (the types of the heavy metals are different according to different types of ores, part of the heavy metals contain some valuable metal copper and the like), the pH value is low, and the water volume is often large. In the smelting process, part of sulfur and metals in the sulfide ore enter the flue gas to be absorbed, and finally waste acid wastewater is generated. The two kinds of waste water treatment processes are often added into a vulcanization process working section, the vulcanization process has a very good effect on the removal of arsenic from waste water and the recovery of valuable metals, and the sulfide precipitates (arsenic sulfide, copper sulfide and the like) have low solubility product and are easy to precipitate and separate. But during the vulcanization reaction, S^2-Easy to bind H under acidic conditions⁺Generation of H₂S gas and vulcanizing agent are low in utilization rate, the treatment cost is increased, and the concentration of hydrogen sulfide belongs to toxic inflammable gas, so that great potential safety hazards exist.

Most designs of current vulcanization reaction unit are comparatively crude, more be circular stirred tank, set up sealed apron on the cell body, set up on the cell body and add pencil, inlet tube and exhaust tube, add medicine mode rough, and the hydrogen sulfide gas body of production is more, and the potential safety hazard is big, and it is not high to vulcanize the medicament utilization ratio, and the treatment cost is higher.

Chinese utility model patent CN209917643U discloses a gas-liquid mixing device, and this reactor adopts hydrogen sulfide gas and acid waste water to react, adopts gas-liquid mixer to mix hydrogen sulfide into waste water and then enters the reactor to react. However, considering that the hydrolysis balance and the solubility of hydrogen sulfide gas in wastewater are low, hydrogen sulfide is difficult to dissolve in acid wastewater and release sulfide ions, the reaction efficiency is much lower than that of adding a vulcanizing agent solution, and the front end adopts hydrogen sulfide gas, so that the safety requirement is much higher, and a plurality of disadvantages exist.

Disclosure of Invention

The invention aims to provide an efficient vulcanization reactor for treating acid wastewater of mines and smelting, which has the advantages of good sealing performance, high safety performance and high utilization efficiency of a vulcanization agent in a vulcanization reaction.

In order to achieve the purpose, the invention adopts the following technical scheme:

an acidic wastewater treatment vulcanization reactor comprises a reactor shell and a seal head which are sealed together;

the bottom of the reactor shell is provided with a vent, and a plurality of dosing ports are uniformly arranged; a manhole and a sight glass are also arranged on the reactor shell;

a plurality of water inlet pipes are uniformly distributed on the end socket, and a dosing branch pipe is arranged at the inlet side of any one water inlet pipe; the bottom of the side surface of the end socket is provided with a water outlet, and the end socket is also provided with an air inlet and an air suction opening;

the number of the medicine feeding openings is the same as that of the water inlet pipes; the outlet of the water inlet pipe is the same as the elevation of the dosing port, and the outlet of the water inlet pipe corresponds to the dosing port one by one. The elevation in the present invention may be the bottom surface of the reactor shell as a reference surface.

Furthermore, a stirrer is arranged in the center of the end socket, and a stirring paddle of the stirrer is arranged on the central axis of the reactor shell. The position of the stirring paddle can be the same as the position elevation of the dosing port, and a better mixing effect is achieved when the dosing port doses medicines and when the acidic wastewater enters the reactor.

In the invention, the water outlet is externally connected with a U-shaped pipe.

In the invention, the distance between the dosing port and the bottom surface of the reactor shell is 200-400 mm.

In the invention, the number of the medicine adding openings is four, and the number of the water inlet pipes is four.

In the invention, the air inlet is provided with an air path one-way valve.

In the invention, the seal head is also provided with an instrument mounting opening.

The vulcanization reactor comprises a reactor shell, an end enclosure and a stirrer, wherein a manhole is arranged at the bottom of the reactor shell, a water outlet is arranged at the bottom of the end enclosure in the direction of the other symmetrical side of the manhole, and an external connecting pipe of the water outlet is designed by adopting a U-shaped pipe, so that the water sealing effect is realized, and hydrogen sulfide gas is prevented from entering a next-stage reactor from a water outlet pipeline; the reactor shell bottom is equipped with the drain, arranges 4 respectively on the reactor shell of manhole and each 45 degrees directions in delivery port both sides and adds the medicine mouth, adds medicine mouth apart from the shell bottom 200 ~ 400mm, and manhole one side 22.5 orientation arranges two sight glasses from top to bottom. The end socket is welded and sealed with the reactor shell, and a stirrer is arranged at the center of the end socket; arrange 4 inlet tubes respectively with the head top of adding the medicine mouth homonymy, 4 inlet tubes are the same apart from the head central distance, and the inlet tube inserts the head and down extends, and the distance of the export end of inlet tube apart from reactor housing bottom is 200 ~ 400mm, keeps the same elevation with adding the medicine mouth, and the inlet side of each inlet tube sets up adds the medicine branch pipe, and the vulcanization medicament can be followed and added the medicine branch pipe and added in the inlet tube, mixes with waste water and gets into in the reactor. The upper end dosing (dosing through the dosing branch pipe) and the lower end dosing (dosing through the dosing port) can be carried out simultaneously, more dosing points are adopted in the vulcanizing agent dosing device, the utilization rate of the vulcanizing agent is facilitated, dosing can be carried out only through the dosing port at the lower end, when more precipitates cause the blockage of the dosing port at the lower end, the upper dosing port is reserved, normal dosing can be guaranteed, the reaction is continued, and the vulcanizing agent still has higher utilization rate.

An air suction opening is arranged in the direction of 45 degrees at one side of the dosing opening, an air inlet is arranged at the position, at the opposite side of the air suction opening, of the same radius distance with the air suction opening, an air path one-way valve is arranged at the upper end of the air inlet, and H is avoided₂And S gas escapes. And an instrument mounting opening is arranged at the other side in the direction of 45 degrees.

The water inlet pipe, the dosing port, the air exhaust port, the instrument mounting port and the like are provided with flanges in advance, so that the water inlet pipe, the dosing port, the air exhaust port, the instrument mounting port and the like are conveniently connected with an external pipeline. If the treatment scale is increased, the reactor can be correspondingly enlarged according to the reaction time, and a plurality of (not limited to 4) dosing ports, water inlet pipes or water inlets and the like are symmetrically and uniformly arranged.

The invention can be set into reactors with different sizes according to different water treatment amounts so as to match the treatment scale, and can be further provided with a plurality of dosing ports and water inlet pipes according to the size of the reactor, without being limited to the 4 characters. The shell of the device adopts a reaction kettle form, is easy to manufacture and seal, and can bear certain pressure. The device adopts top water inlet, the water inlet pipe extends into the bottom of the reactor, and the four water inlet pipe interfaces are over against the four vulcanizing agent feeding ports, so that the agent can be ensured to contact with the wastewater before reaction as soon as possible in the feeding reactor and react with high-copper or high-arsenic plasma of raw water, and a higher vulcanizing agent utilization rate is realized. The invention is provided with a manhole and a sight glass, which is convenient for maintenance and observation. The stirrer motor of the reactor is arranged at the top, and the communicating port of the stirring shaft and the end socket is sealed, so that the reactor is sealed as much as possible. The instrument mounting port can be provided with an ORP detector, a pH meter and other devices. Set up the suction opening at the head top of reactor, suction opening opposite side sets up the air inlet, bleed at the suction opening through the fan, the air inlet keeps and outside air intercommunication when bleeding for keep the negative pressure state above the liquid level in the reactor cavity, further guarantee even there is the seam to exist at other sealed departments, also can not have hydrogen sulfide gas and overflow outward, the hydrogen sulfide gas of taking out absorbs the back through alkali lye, can regard as again during the vulcanization medicament adds the reaction, guarantee the utilization ratio of vulcanization medicament.

The utilization rate of the vulcanizing agent directly added is improved through the designed reactor, in the whole process, sodium sulfide generated after hydrogen sulfide is absorbed by alkali liquor can be recycled and used as the vulcanizing agent to be added into the reaction, and the utilization rate of the whole vulcanizing agent is high.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can reduce the generation of hydrogen sulfide, prevent the overflow of hydrogen sulfide gas, and the utilization rate of the vulcanizing agent can reach more than 99 percent;

2. the invention is easy to manufacture and seal, has simple structure and is convenient to maintain and observe;

3. the invention can be set into reactors with different sizes according to different water treatment amounts so as to match the treatment scale.

Drawings

FIG. 1 is a schematic elevation view of a sulfidation reactor of the present invention;

FIG. 2 is a schematic top view of a sulfidation reactor of the present invention;

reference numerals: a reactor shell 1; a seal head 2; a vent 3; a medicine adding port 4; a manhole 5; a sight glass 6; a water inlet pipe 7; a dosing branch pipe 8; a water outlet 9; an air inlet 10; an air suction opening 11; a stirrer 12; an instrument mounting port 13.

Detailed Description

The invention is described in further detail below with reference to the figures and the detailed description.

Example 1

As shown in fig. 1-2, the acidic wastewater treatment vulcanization reactor comprises a reactor shell 1 and a seal head 2 which are sealed together;

the bottom of the reactor shell 1 is provided with a vent 3, and four dosing ports 4 are uniformly arranged; the reactor shell 1 is also provided with a manhole 5 and a sight glass 6;

four water inlet pipes 7 are uniformly distributed on the end socket 2, and a dosing branch pipe 8 is arranged at the inlet side of any one water inlet pipe 7; the bottom of the side surface of the end socket 2 is provided with a water outlet 9, and the end socket 2 is also provided with an air inlet 10 and an air suction opening 11;

the number of the medicine adding openings 4 is the same as that of the water inlet pipes 7; the outlet of the water inlet pipe 7 is the same as the elevation of the dosing port, and the outlet of the water inlet pipe 7 corresponds to the dosing port one by one.

The center of the end socket 2 is provided with a stirrer 12, and a stirring paddle of the stirrer 12 is arranged on the central axis of the reactor shell 1. The water outlet 9 is externally connected with a U-shaped pipe.

The distance between the dosing port 4 and the bottom surface of the reactor shell 1 is 200-400 mm. The distance between the outlet of the water inlet pipe 7 and the bottom surface of the reactor shell 1 is 200-400 mm.

And the air inlet is provided with an air path one-way valve.

And an instrument mounting opening 13 is also formed in the seal head 2. The device is used for installing an ORP detector or a pH meter and the like.

The water inlet pipe, the dosing port, the air exhaust port, the instrument mounting port and the like are provided with flanges in advance, so that the water inlet pipe, the dosing port, the air exhaust port, the instrument mounting port and the like are conveniently connected with an external pipeline.

The technical parameter interval upper and lower limit values and interval values of the reactor can realize the invention, and the embodiment is not listed.

Conventional technical knowledge in the art can be used for the details which are not described in the present invention.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.