CN215250222U - Multistage purification and magnetic separation heavy metal wastewater treatment system - Google Patents
Multistage purification and magnetic separation heavy metal wastewater treatment system Download PDFInfo
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- CN215250222U CN215250222U CN202120610617.0U CN202120610617U CN215250222U CN 215250222 U CN215250222 U CN 215250222U CN 202120610617 U CN202120610617 U CN 202120610617U CN 215250222 U CN215250222 U CN 215250222U
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 42
- 238000007885 magnetic separation Methods 0.000 title claims abstract description 35
- 238000000746 purification Methods 0.000 title claims abstract description 18
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 239000010802 sludge Substances 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 230000005389 magnetism Effects 0.000 claims abstract description 17
- 239000002351 wastewater Substances 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 238000001179 sorption measurement Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 21
- 238000005189 flocculation Methods 0.000 claims description 17
- 230000004044 response Effects 0.000 claims description 15
- 230000016615 flocculation Effects 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 238000006386 neutralization reaction Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000010008 shearing Methods 0.000 claims description 11
- 229920002522 Wood fibre Polymers 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000002025 wood fiber Substances 0.000 claims description 9
- 108010016634 Seed Storage Proteins Proteins 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 230000009920 chelation Effects 0.000 claims description 4
- 239000006148 magnetic separator Substances 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 4
- 239000013049 sediment Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 11
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- 239000002253 acid Substances 0.000 description 5
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- 230000000694 effects Effects 0.000 description 4
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- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
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- 229910052804 chromium Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a multistage purification magnetic separation heavy metal wastewater treatment system, including reaction system, charge system, magnetic separation system, magnetism recovery system and sludge drying system, reaction system intercommunication sewage inlet tube and with the magnetic separation system intercommunication, this reaction system with charge system connects, magnetic separation system and magnetism recovery system intercommunication, including high-speed cutter, magnetic drum and blow off pipe among this magnetism recovery system, blow off pipe intercommunication sludge drying system, the magnetic drum is connected charge system and is carried the magnetism kind of retrieving to charge system in. The utility model discloses can effectively improve heavy metal ion's among the waste water efficiency of getting rid of and realize the sediment minimizing.
Description
Technical Field
The utility model relates to a sewage advanced treatment technical field specifically belongs to a multistage purification magnetic separation heavy metal effluent disposal system.
Background
According to the national pollution source general investigation result of China, in 2015, the total amount of heavy metal wastewater discharged in China reaches 869 thousands of tons, the total amount of heavy metal elements such as arsenic, chromium, lead and mercury contained in the heavy metal wastewater exceeds 2.21 thousands of tons, and the heavy metal elements are enriched by fishes, plants and the like after being discharged to the environment and finally affect human health, so that the strengthening of the research on the heavy metal wastewater treatment technology also becomes a primary task in the development process of the current environment control work.
The industrial treatment process of heavy metal wastewater mainly comprises a coagulation-flocculation precipitation method and an adsorption method. However, the existing coagulation-flocculation precipitation method still has the defects of large occupied area of equipment and large amount of sludge, and although the adsorption method has simple process and high effluent quality, the application of the adsorption method in industry is limited due to the huge pressure drop of an adsorption bed layer and the price problem of an adsorption material. The magnetic separation treatment technology is a novel wastewater treatment technology, strengthens and accelerates the forming process of floc particles by adding magnetic seeds into water to be treated, separates flocs by utilizing a magnetic field, and greatly improves the treatment efficiency compared with the traditional gravity settling process. However, the treatment effect of the existing magnetic separation technology on the wastewater containing heavy metals is not ideal, the quality of the effluent cannot meet the environmental quality requirement of surface water, and the technology needs to be continuously researched and improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multistage purification magnetic separation heavy metal effluent disposal system can effectively improve heavy metal ion's among the waste water efficiency of getting rid of and realize the bed mud minimizing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a multistage purification magnetic separation heavy metal wastewater treatment system, includes reaction system, medicine system, magnetic separation system, magnetism recovery system and sludge drying system, reaction system intercommunication sewage inlet tube and with the magnetic separation system intercommunication, this reaction system with the medicine system is connected, magnetic separation system and magnetism recovery system intercommunication, including high-speed cutter, magnetic drum and blow off pipe among this magnetism recovery system, blow off pipe intercommunication sludge drying system, the magnetic seed that medicine system will retrieve is connected to the magnetic drum carries to the medicine system in.
Furthermore, the reaction system is sequentially provided with a neutralization reaction tank, a chelating flocculation tank and an adsorption reaction tank according to the flowing direction of the wastewater inlet pipeline, stirring motors, a stirrer and a guide cylinder are arranged in the shells of the neutralization reaction tank, the chelating flocculation tank and the adsorption reaction tank, the stirring motors are respectively arranged at the top of the shell and are connected with the stirrer inside, the guide cylinder is fixed inside the inner body, and the stirrer is positioned in the middle of the guide cylinder.
Furthermore, the draft tube is fixed on the wall of the reaction system pool through a support, the support is divided into an upper layer and a lower layer, four supporting points of each layer are fixed on the wall of the reaction system pool, and the stirrer is a push type stirring paddle.
Further, the dosing system comprises an acid-base adding device, a heavy metal trapping agent adding device and a magnetic response material reaction device, wherein the acid-base adding device is communicated with a neutralization reaction tank, the heavy metal trapping agent adding device is communicated with a chelation flocculation tank, the adsorption reaction tank is connected with the magnetic response material reaction device, the upper part of the adsorption reaction tank is connected with a magnetic seed storage tank and a wood fiber storage tank, and the magnetic seed storage tank is communicated with a magnetic drum.
Furthermore, a magnetic separator, a purified water outlet pipeline and a separated sludge discharge pipeline are arranged in the magnetic separation system, and the inlet end of the magnetic separator is connected with the outlet end of the adsorption reaction tank.
Further, magnetism recovery system includes high-speed cutter, magnetic drum and blow off pipe, and this magnetism recovery system divide into mud shearing chamber and magnetic drum separator, high-speed cutter sets up at mud shearing chamber, the magnetic drum sets up at the magnetic drum separator, blow off pipe intercommunication magnetic drum separator, the mud of being separated by high-speed cutter passes through the blow off pipe and carries to sludge drying system.
Further, the sludge drying system comprises a filter press and a drying machine, the magnetic drum separation chamber is connected with the filter press, and the drying machine is connected with the filter press.
To sum up, because the utility model adopts the above technical scheme, the utility model discloses following technological effect has:
1. conventional magnetic separation techniques are usually combined with coagulation-flocculation precipitation processes only to accelerate the process of floc sedimentation by forming magnetic flocs. The utility model discloses combine together adsorption process and magnetic separation technique, at first further strengthen remaining trace heavy metal ion's in the waste water effect of getting rid of through preparation and addition magnetic adsorption body, adopt the magnetic separation's mode to separate the magnetic adsorption body that combines the heavy metal again. Compared with the traditional fixed bed adsorption process, the magnetic separation process has smaller system pressure drop and is suitable for large-flow sewage treatment, and the magnetic separation system can continuously run without replacing the adsorption material.
2. The design of draft tube has increased fluidic turbulence, can show improvement mix effect and reaction rate, through the inner loop flow of fluid, prevents the deposit of reaction tank bottom silt, and all silt in the system are all separated through the mode of magnetic separation, have simplified the sludge treatment pipeline, have improved sludge treatment efficiency, compare with conventional coagulation-flocculation and precipitation technology, the mud production volume significantly reduces.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
in the attached drawing, 1, a sewage inlet pipe, 2, an acid and alkali adding device, 3, a stirring motor, 4, a heavy metal catching agent adding device, 5, a wood fiber storage tank, 6, a magnetic seed storage tank, 7, a magnetic response material reaction device, 8, a magnetic disk, 9, a purified water outlet pipe, 10, a magnetic drum, 11, a high-speed shearing machine, 12, a separated sludge discharge pipe, 13, a blow-off pipe, 14, a filter press, 15, a drying machine, 16, a guide cylinder, 17, a stirrer, 18, a neutralization reaction tank, 19, a chelating flocculation tank, 20 and an adsorption reaction tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
As shown in figure 1, a multi-stage purification and magnetic separation heavy metal wastewater treatment system as shown in figure 1 comprises a reaction system, a dosing system, a magnetic separation system, a magnetic recovery system and a sludge drying system.
The reaction system is sequentially provided with a neutralization reaction tank 18, a chelating flocculation tank 19 and an adsorption reaction tank 20 according to the flow direction arrangement of the wastewater inlet pipe 1, and stirring motors, a push type stirrer 17 and a guide cylinder 16 are arranged in the neutralization reaction tank 18, the chelating flocculation tank 19 and the adsorption reaction tank 20.
The magnetic separation system comprises a magnetic disk 8, a purified water outlet pipeline 9 and a separated sludge discharge pipeline 12, wherein the inlet end of the magnetic separation system is connected with the outlet end of the adsorption reaction tank 20.
The magnetic recovery system comprises a high-speed shearing machine 11, a magnetic drum 10 and a drain pipe 13, sludge separated by the high-speed shearing machine 11 is conveyed to the sludge drying system through the drain pipe 13, and magnetic seeds are adsorbed and separated by the magnetic drum and then conveyed to the magnetic seed storage tank 6 for storage.
The sludge drying system comprises a filter press 14 and a dryer 15, wherein the sludge conveyed by the sewage discharge pipe is firstly subjected to filter pressing by the filter press 14 to remove most of water, and then is conveyed into the dryer 15 for drying.
The dosing system comprises an acid/alkali adding device 2, a heavy metal trapping agent adding device 4 and a magnetic response material reaction device 7, wherein the acid/alkali adding device 2 is connected with the neutralization reaction tank 18, the heavy metal trapping agent adding device 4 is connected with the chelation flocculation tank 19, and the magnetic response material reaction device 7 is connected with the adsorption reaction tank 20.
The magnetic response material reaction device 7 is a high-pressure reaction kettle, and the upper part is connected with a magnetic seed storage tank 6 and a wood fiber 5 storage tank.
The guide shell 16 is fixed on the wall of the reaction system tank through a bracket, the bracket is divided into an upper layer and a lower layer, and each layer has four supporting points.
The stirring paddle 17 of the reaction system is in the form of a push type stirring paddle, and 2 layers of stirring paddles are arranged on the stirring shaft at the same time.
The magnetic recovery system is divided into a sludge shearing chamber 11 and a magnetic drum separation chamber 10, two parallel high shearing machines are arranged in the sludge shearing chamber 11, the sheared sludge enters the magnetic drum separation chamber 10 through overflow, magnetic seeds are adsorbed and recovered, and the residual sludge is conveyed to the sludge drying system through a drain pipe 13 at the bottom.
The following describes the treatment process of the multi-stage purification and magnetic separation heavy metal wastewater treatment system in detail. The method comprises the following specific steps:
heavy metal wastewater firstly enters a neutralization reaction tank 18 in a reaction system through a water inlet pipe 1, and acid/alkali is added into the neutralization reaction tank 18 through an acid/alkali agent adding device 2, so that the acid-alkali balance in the wastewater is broken, and partial heavy metal ions are precipitated and separated out. Then enters a chelating flocculation tank 19, and a heavy metal catching agent is added into the chelating flocculation tank to catch heavy metal ions in the water through chelation and generate micro-floccules. And then the mixture enters an adsorption reaction tank 20, a magnetic response wood fiber-based adsorption material is added into the adsorption reaction tank through a magnetic response material reaction device 7, and the magnetic adsorption material and the flocculating constituent are fully mixed to form a magnetic coagulation flocculating constituent. Under the action of the matching device guide cylinder 16 and the push type stirrer 17, the materials are subjected to violent internal circulation flow in each pool of the reaction system, so that the reaction efficiency is improved, and the bottom flocculating constituent is prevented from being deposited. The materials in the adsorption reaction tank 20 flow out from the upper part and enter the magnetic separation system, the magnetic flocs are adsorbed by the magnetic disk 8 and then collected by the scraper and conveyed to the magnetic recovery system through the pipeline 12, and the clean water after floc removal is discharged outside through the water purification pipe 9. In the magnetic recovery system, magnetic flocs are firstly scattered by a high-speed shearing machine 11, wrapped magnetic seeds are released, then the magnetic seeds are separated from sludge by a magnetic drum, the magnetic seeds are returned to a magnetic seed storage tank 6 again, and the sludge is conveyed to a sludge drying system by a discharge pipe 13 and is subjected to reduction treatment by a filter press 14 and a dryer 15 respectively and then is conveyed to a corresponding unit for disposal. The recovered magnetic seeds reenter the magnetic response material reaction device 7 to be mixed with the natural lignin fibers from the wood fiber storage tank 5, so as to prepare the wood fiber-based magnetic response adsorption material with the magnetic response function, which is used for adsorbing the heavy metals in the adsorption reaction chamber 20.
The utility model discloses a main technical innovation point lies in:
1. a multi-stage treatment reaction system is arranged for heavy metal wastewater, advanced treatment of heavy metals in the wastewater is realized through a three-stage purification system of chemical precipitation, chelating flocculation and adsorption separation, and the quality of effluent water can meet the requirements of III-class water quality in the environmental quality standard of surface water (GB 3838-.
2. In the design of each reaction tank, a guide cylinder and a propulsion stirring mode are adopted, so that the wastewater in each tank keeps violent internal circulation flow, heavy metals and purification materials are better mixed, the internal circulation also prevents sediments at the bottom of each tank, and a sludge treatment pipeline is simplified.
3. The magnetic response material reaction device is added, the efficient wood fiber-based magnetic response adsorption material is prepared, deep removal of residual heavy metals in wastewater is realized through adsorption, and the utilized natural wood fiber is taken as the richest renewable biological resource on the earth, so that the magnetic response adsorption material has the advantages of low price, safety, environmental protection and no secondary pollution.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a multistage purification magnetic separation heavy metal effluent disposal system which characterized in that: including reaction system, charge system, magnetism piece-rate system, magnetism recovery system and sludge drying system, reaction system intercommunication sewage inlet tube and with magnetism piece-rate system intercommunication, this reaction system with charge headtotail, magnetism piece-rate system and magnetism recovery system intercommunication, including high-speed cutter, magnetic drum and blow off pipe in this magnetism recovery system, blow off pipe intercommunication sludge drying system, the magnetic seed that charge headtotail will retrieve is carried to charge system in to the magnetic drum.
2. The multi-stage purification and magnetic separation heavy metal wastewater treatment system according to claim 1, characterized in that: the reaction system is sequentially provided with a neutralization reaction tank, a chelating flocculation tank and an adsorption reaction tank according to the flowing direction of a wastewater inlet pipeline, stirring motors, stirrers and guide cylinders are arranged in the shells of the neutralization reaction tank, the chelating flocculation tank and the adsorption reaction tank respectively, the stirring motors are arranged at the top of the shell and are connected with the inner stirrer, the guide cylinder is fixed inside the inner body, and the stirrer is positioned in the middle of the guide cylinder.
3. The multi-stage purification and magnetic separation heavy metal wastewater treatment system according to claim 2, characterized in that: the guide cylinder is fixed on the wall of the reaction system tank through a support, the support is divided into an upper layer and a lower layer, four supporting points of each layer are fixed on the wall of the reaction system tank, and the stirrer is a push type stirring paddle.
4. The multi-stage purification and magnetic separation heavy metal wastewater treatment system according to claim 2, characterized in that: the dosing system comprises an acid-base adding device, a heavy metal trapping agent adding device and a magnetic response material reaction device, wherein the acid-base adding device is communicated with a neutralization reaction tank, the heavy metal trapping agent adding device is communicated with a chelation flocculation tank, the adsorption reaction tank is connected with the magnetic response material reaction device, the upper part of the adsorption reaction tank is connected with a magnetic seed storage tank and a wood fiber storage tank, and the magnetic seed storage tank is communicated with a magnetic drum.
5. The multi-stage purification and magnetic separation heavy metal wastewater treatment system according to claim 1, characterized in that: the magnetic separation system is internally provided with a magnetic separator, a purified water outlet pipeline and a separated sludge discharge pipeline, and the inlet end of the magnetic separator is connected with the outlet end of the adsorption reaction tank.
6. The multi-stage purification and magnetic separation heavy metal wastewater treatment system according to claim 1, characterized in that: magnetism recovery system includes high-speed cutter, magnetic drum and blow off pipe, and this magnetism recovery system divide into mud shearing chamber and magnetic drum separator, high-speed cutter sets up at mud shearing chamber, the magnetic drum sets up at the magnetic drum separator, blow off pipe intercommunication magnetic drum separator, and the mud of being separated by high-speed cutter passes through the blow off pipe and carries to sludge drying system.
7. The multi-stage purification and magnetic separation heavy metal wastewater treatment system according to claim 6, characterized in that: the sludge drying system comprises a filter press and a drying machine, the magnetic drum separation chamber is connected with the filter press, and the drying machine is connected with the filter press.
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| CN202120610617.0U CN215250222U (en) | 2021-03-26 | 2021-03-26 | Multistage purification and magnetic separation heavy metal wastewater treatment system |
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| CN202120610617.0U CN215250222U (en) | 2021-03-26 | 2021-03-26 | Multistage purification and magnetic separation heavy metal wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028311A (en) * | 2022-05-31 | 2022-09-09 | 武汉格林环保设施运营有限责任公司 | A separation type heavy metal biological recovery sewage treatment system and using method thereof |
-
2021
- 2021-03-26 CN CN202120610617.0U patent/CN215250222U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028311A (en) * | 2022-05-31 | 2022-09-09 | 武汉格林环保设施运营有限责任公司 | A separation type heavy metal biological recovery sewage treatment system and using method thereof |
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Address after: 242300 intersection of Dongcheng Avenue and Dongcheng Road, heli Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Patentee after: Anhui Boshike Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: No. 12, Kexing Road, high tech Zone, Nanning, Guangxi 530000 Patentee before: GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Country or region before: China |
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