CN220132055U - Treatment system for special industrial wastewater - Google Patents
Treatment system for special industrial wastewater Download PDFInfo
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- CN220132055U CN220132055U CN202321685609.8U CN202321685609U CN220132055U CN 220132055 U CN220132055 U CN 220132055U CN 202321685609 U CN202321685609 U CN 202321685609U CN 220132055 U CN220132055 U CN 220132055U
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 87
- 239000010802 sludge Substances 0.000 claims abstract description 96
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000004062 sedimentation Methods 0.000 claims abstract description 74
- 238000005345 coagulation Methods 0.000 claims abstract description 36
- 230000015271 coagulation Effects 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 238000005189 flocculation Methods 0.000 claims abstract description 19
- 230000016615 flocculation Effects 0.000 claims abstract description 19
- 239000006247 magnetic powder Substances 0.000 claims abstract description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 244000005700 microbiome Species 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000011574 phosphorus Substances 0.000 claims abstract description 9
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 230000000593 degrading effect Effects 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 9
- 238000005276 aerator Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 8
- 239000000701 coagulant Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 7
- 239000006148 magnetic separator Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 238000006213 oxygenation reaction Methods 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 11
- 239000002351 wastewater Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 208000034699 Vitreous floaters Diseases 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
A treatment system for special industrial wastewater relates to the technical field of wastewater treatment, and comprises a water collecting tank; an adjusting tank; the coagulation air floatation tank is used for removing suspended particles in industrial wastewater; the USBA pool is used for degrading organic matters which are difficult to degrade by aerobic microorganisms in the industrial wastewater; the A/O biochemical tank is used for reducing the concentration of organic matters in industrial wastewater; the secondary sedimentation tank is used for separating mud from water of industrial wastewater in the secondary sedimentation tank under the action of gravity; the magnetic coagulation sedimentation tank is used for removing suspended matters, oil, total phosphorus, heavy metals and insoluble COD and BOD in industrial wastewater and comprises a mixing tank, a magnetic mixing tank, a flocculation tank and a sedimentation tank, wherein magnetic powder is added into the magnetic mixing tank; the sludge pond is used for temporarily storing sludge; a sludge dewatering machine. By adopting the technical scheme, suspended matters, oil, total phosphorus, heavy metals and insoluble COD and BOD in the industrial wastewater are effectively removed, the quality of effluent water is improved, and the safe discharge of the industrial wastewater is realized.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a treatment system for special industrial wastewater.
Background
In the curtain cloth production process, chemical assistants, paint, dye and the like are used in the process stages of rinsing, weaving, coating, printing and the like, a large amount of wastewater is generated, and the problems of high pollutant concentration, unstable water flow, complex sewage components and the like of curtain manufacturing industrial wastewater generally exist, so that manufacturers need to treat the generated wastewater to discharge the wastewater.
In the related art, one Chinese patent of the utility model with the publication number of CN212102486U discloses a food waste water treatment system, which comprises a water collecting tank, an adjusting tank, a coagulation air floatation tank, a hydrolysis acidification tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank and a secondary sedimentation tank which are connected in sequence through pipelines; the coagulation air floatation tank and the secondary sedimentation tank are also connected with a sludge tank through a sludge pipeline, and meanwhile, the secondary sedimentation tank is also communicated into a pipeline between the hydrolysis acidification tank and the anoxic tank through a sludge return pipeline.
However, when the industrial wastewater of curtain process is treated by the wastewater treatment system in the related art, although the wastewater treatment system has excellent removal effect on massive fixed matters, suspended matters, organic matters and the like in the industrial wastewater, the capability of removing substances such as total phosphorus, insoluble COD, BOD and the like in the industrial wastewater is poor, so that the quality of effluent is low, and the emission standard is difficult to reach.
Disclosure of Invention
The utility model aims at solving the problems that the prior art wastewater treatment system has poor capability of removing oil, total phosphorus, insoluble COD, BOD and other substances in industrial wastewater, so that the quality of effluent is low and the effluent is difficult to reach the discharge standard.
The technical scheme adopted by the utility model is as follows: a system for treating wastewater from a specialty industry, comprising: a water collecting tank communicated with the factory sewage pipe and used for receiving the industrial wastewater discharged from the factory; the adjusting tank is communicated with the water collecting tank through a pipeline and is used for adjusting the water quality and the water quantity of industrial wastewater; the coagulation air floatation tank is communicated with the water outlet of the regulating tank through a pipeline and is used for removing suspended particles in industrial wastewater; the USBA pool is communicated with the water outlet of the coagulation air floatation pool through a pipeline and is used for degrading organic matters which are difficult to degrade by aerobic microorganisms in industrial wastewater; the A/O biochemical tank is communicated with a water outlet of the USBA tank through a pipeline and is used for reducing the concentration of organic matters in industrial wastewater; the secondary sedimentation tank is communicated with the water outlet of the A/O biochemical tank through a pipeline, so that industrial wastewater is subjected to mud-water separation in the secondary sedimentation tank under the action of gravity and separated into supernatant and lower sludge; the magnetic coagulation sedimentation tank is communicated with the water outlet of the secondary sedimentation tank and is used for removing suspended matters, oil, total phosphorus, heavy metals and insoluble COD and BOD in industrial wastewater, and comprises a mixing tank, a magnetic mixing tank, a flocculation tank and a sedimentation tank which are sequentially communicated, wherein magnetic powder is added into the magnetic mixing tank, and PAM and PAC are respectively added into the mixing tank and the flocculation tank; the sludge tank is used for temporarily storing sludge, and the sludge generated by the secondary sedimentation tank and the flocs generated by the magnetic coagulation sedimentation tank are communicated with the sludge tank through pipelines; and the sludge dehydrator is communicated with the sludge tank and is used for receiving the sludge in the sludge tank and dehydrating the sludge.
Preferably, the mixing tank, the magnetic mixing tank and the flocculation tank are all provided with a stirrer.
Preferably, the sedimentation tank is provided with a water outlet and a sludge discharge port, water discharged from the water outlet can be directly discharged or recycled, and the sludge discharge port is communicated with the sludge tank through a pipeline, so that flocs generated by the flocculation tank enter the sedimentation tank to be settled and then are discharged into the sludge tank through the sludge discharge port.
Preferably, the magnetic coagulation sedimentation tank further comprises a magnetic powder separator, wherein the magnetic powder separator is positioned at the sludge discharge port of the sedimentation tank and is communicated with the sludge discharge port of the sedimentation tank.
Preferably, a grid and a water collecting tank lifting pump are arranged in the water collecting tank, the grid is used for removing coarser impurities and floaters in industrial wastewater, the water collecting tank lifting pump is arranged on one side, far away from the grid, of the water collecting tank, and the water collecting tank lifting pump is used for conveying the industrial wastewater in the water collecting tank into the regulating tank.
Preferably, the equalizing basin includes stirring pond and buffer tank, stirring pond and buffer tank all communicate with the catch basin, the buffer tank passes through the pipeline intercommunication with the stirring pond, all be provided with the dive agitator in stirring pond and the buffer tank to make the industrial waste water intensive mixing in stirring pond and the buffer tank and guarantee the difficult deposit in the bottom of the pool in stirring pond and buffer tank of particulate matter in the industrial waste water.
Preferably, the coagulation air floatation tank comprises a first air floatation tank, a second air floatation tank and a dosing device for dosing coagulant to the first air floatation tank and the second air floatation tank, wherein the water inlet end of the first air floatation tank is communicated with the stirring tank, the second air floatation tank is communicated with the first air floatation tank, and scum generated by the first air floatation tank and the second air floatation tank is discharged into the sludge tank through a pipeline.
Preferably, a sludge pump is further arranged in the USBA pool, and the sludge pump is used for discharging the sludge in the USBA pool into the sludge pool.
Preferably, the A/0 biochemical tank comprises an anoxic tank and an aerobic tank, a water inlet of the anoxic tank is communicated with the USBA tank, a water inlet of the aerobic tank is communicated with a water outlet of the anoxic tank, elastic fillers are arranged in the aerobic tank and the anoxic tank, and the elastic fillers are contained in industrial wastewater so as to allow microorganisms in the aerobic tank and the anoxic tank to carry out film hanging growth.
Preferably, the bottom side of the aerobic tank is provided with membrane type aerators which are uniformly distributed on the bottom side of the aerobic tank so as to carry out air diffusion and oxygenation in the aerobic tank.
After the technical scheme is adopted, the utility model has the beneficial effects that:
1. when the curtain process industrial wastewater is treated, grease and suspended matters in the industrial wastewater are primarily removed after the industrial wastewater is pretreated through the coagulation air floatation tank, macromolecular organic matters in the industrial wastewater are decomposed into small molecular organic matters through the USBA tank, the organic load of the A/O biochemical tank is reduced, meanwhile, the concentration of the organic matters in the industrial wastewater is reduced, the small molecular organic matters in the industrial wastewater are removed through the microbial reaction in the A/O biochemical tank, the concentration of the organic matters in the industrial wastewater is further reduced, suspended matters, oil, total phosphorus, heavy metals, insoluble COD (chemical oxygen demand), BOD (biochemical oxygen demand) and other matters are effectively removed through the magnetic coagulation sedimentation tank, the effluent quality is improved, and the industrial wastewater treated by the method reaches the discharge standard, so that the safe discharge of the industrial wastewater is realized;
2. the utility model adopts the magnetic coagulation sedimentation tank technology, the magnetic powder is introduced to strengthen the flocculation effect of the flocculant, quicken the sedimentation speed of the floccule, save the consumption of the coagulant, reduce the treatment cost, ensure that the magnetic coagulation sedimentation tank has strong load resistance and can stably operate under high load, and the magnetic coagulation sedimentation tank also has the advantages of small occupied area, integration into modularized equipment and shortening the construction time, thereby having better market popularization value.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a process flow diagram of the present embodiment;
FIG. 2 is a flow chart of the industrial wastewater treatment of the present example.
Reference numerals illustrate: 1. a water collecting tank; 11. a grille; 12. a sump lift pump; 2. an adjusting tank; 21. a stirring pool; 211. submersible agitators; 22. a buffer pool; 3. a coagulation floatation tank; 31. a first air floatation tank; 32. a second air floatation tank; 33. a dosing device; 34. a slag scraping machine; 4. a USBA pool; 41. a sludge pump; 5. an A/O biochemical tank; 51. an anoxic tank; 52. an aerobic tank; 53. a half partition wall; 54. an elastic filler; 55. a membrane aerator; 56. a reflux pump; 57. submersible flow impeller; 6. a secondary sedimentation tank; 7. a magnetic coagulation sedimentation tank; 71. a mixing tank; 72. a magnetic mixing pool; 73. a flocculation tank; 74. a sedimentation tank; 75. a stirrer; 76. a magnetic powder separator; 8. a sludge pool; 81. a sludge lifting pump; 9. a sludge dewatering machine; 10. metering tank, 20, emergency pool.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-2.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and those skilled in the art can make modifications to the present embodiment which do not contribute to the utility model as required after reading the present specification, but are protected by the patent laws within the scope of the appended claims.
The embodiment relates to a special industrial wastewater treatment system, referring to fig. 1 and 2, comprising a water collecting tank 1, a regulating tank 2, a coagulation air floatation tank 3, a USBA tank 4, an A/O biochemical tank 5, a secondary sedimentation tank 6, a magnetic coagulation sedimentation tank 7, a sludge tank 8 and a sludge dewatering machine 9 which are sequentially connected through pipelines.
Wherein, catch basin 1 and factory sewage pipe intercommunication for receive the industrial waste water of follow factory discharge, be provided with grid 11 and catch basin elevator pump 2 in the catch basin 1, grid 11 is fixed to be set up in catch basin 1, and grid 11 is arranged in getting rid of the coarser debris and the floater in the industrial waste water (such as useless yarn head etc.) to prevent that coarser debris and the floater in the industrial waste water from influencing subsequent waste water treatment flow, simultaneously, the bars sediment that grid 11 department produced can direct outward transport to be handled. The catch basin elevator pump 2 is fixedly arranged on one side of the grid 11, which is away from the catch basin 1 and the factory sewage pipe, and the catch basin elevator pump 2 is used for conveying industrial wastewater in the catch basin 1 into the regulating tank 2, the regulating tank 2 is communicated with the catch basin 1 through a pipeline, the regulating tank 2 is used for providing the buffer capacity of wastewater treatment load, regulating the water quality and the water quantity of the industrial wastewater and ensuring the stable operation of subsequent treatment facilities.
The regulating tank 2 is used for regulating the water quality and quantity of the industrial wastewater. The regulating tank 2 comprises a stirring tank 21 and a buffer tank 22, wherein the stirring tank 21 and the buffer tank 22 are communicated with the water collecting tank 1 through pipelines, and the buffer tank 22 is communicated with the stirring tank 21 through pipelines. The stirring tank 21 and the buffer tank 22 are internally provided with the submersible stirrer 211, and the submersible stirrer 211 is used for fully stirring the industrial wastewater in the stirring tank 21 and the buffer tank 22 so as to achieve the purpose of balancing the water quality and the water quantity of the industrial wastewater, and meanwhile, the particulate matters in the industrial wastewater are not easy to deposit at the tank bottoms of the stirring tank 21 and the buffer tank 22. The buffer tank 22 plays a role in buffering, and prevents the condition that the industrial wastewater enters the subsequent treatment facilities without being regulated due to the large load of the stirring tank 21.
And the coagulation air floatation tank 3 is used for removing suspended particles in the industrial wastewater. The coagulation air floatation tank 3 comprises a first air floatation tank 31, a second air floatation tank 32 and a dosing device 33 for dosing coagulant to the first air floatation tank 31 and the second air floatation tank 32, wherein a water inlet of the first air floatation tank 31 is communicated with a water outlet of the stirring tank 21, the second air floatation tank 32 is communicated with the first air floatation tank 31, and the dosing device 33 is respectively used for dosing coagulant to the first air floatation tank 31. In addition, a gas dissolving system is arranged in the coagulation air floatation tank 3, and the gas dissolving system is used for generating a large number of micro bubbles in the first air floatation tank 31 and the second air floatation tank 32. When the industrial wastewater enters the first air floatation tank 31 and the second air floatation tank 32, the industrial wastewater is completely mixed with the coagulant added by the dosing device 33, a large number of micro bubbles are generated in the first air floatation tank 31 and the second air floatation tank 32 under the action of the gas dissolving system, the micro bubbles are contacted with grease, suspended matters and the like in the industrial wastewater to generate scum, and the scum floats on the water surface of the industrial wastewater, namely, solid-liquid separation is realized, so that suspended matter particles in the industrial wastewater are removed.
In this embodiment, the coagulant to be added by the chemical adding device 33 is PAM or PAC.
In addition, in order to collect the dross conveniently, a dross scraper 34 is arranged in each of the first air floatation tank 31 and the second air floatation tank 32, and the dross collected by the dross scraper 34 is conveyed into the sludge tank 8 through a pipeline.
And the USBA pool 4 is used for degrading organic matters which are difficult to degrade by aerobic microorganisms in the industrial wastewater, so that macromolecular organic matters are decomposed into micromolecular organic matters. A sludge pump 41 is provided in the USBA tank 4, and when the amount of sludge generated in the USBA tank 4 is large, the sludge pump 41 can convey the sludge into the sludge tank 8.
The A/O biochemical tank 5 is used for reducing the concentration of organic matters in the industrial wastewater so as to purify the industrial wastewater. The A/O biochemical tank 5 comprises an anoxic tank 51 and an aerobic tank 52, a water inlet of the anoxic tank 51 is communicated with the USBA tank 4, the aerobic tank 52 is communicated with the anoxic tank 51, a semi-partition wall 53 is arranged between the anoxic tank 51 and the aerobic tank 52, a plurality of water passing square holes are formed in the semi-partition wall 53, so that industrial wastewater in the anoxic tank 51 can smoothly enter the aerobic tank 52, elastic fillers 54 with certain heights are arranged in the anoxic tank 51 and the aerobic tank 52, the elastic fillers 54 are contained in the industrial wastewater so as to allow microorganisms in the anoxic tank 51 and the aerobic tank 52 to carry out film hanging growth, the microorganisms in the aerobic tank 52 can adsorb and degrade organic matters in the industrial wastewater, the concentration of the organic matters is reduced, and the aged biological film falls off from the elastic fillers 54 under the action of water conservancy shearing and then enters the secondary sedimentation tank 6 through a pipeline.
The bottom side of the aerobic tank 52 is also provided with a membrane type aerator 55, the membrane type aerator 55 is uniformly distributed on the bottom side of the aerobic tank 52, and in the implementation process, the membrane type aerator 55 can be connected with external air blast equipment, so that the air in the aerobic tank 52 is diffused and oxygenated through the membrane type aerator 55, and the dissolved oxygen concentration of the aerobic tank 52 is adjusted by adjusting the air supply quantity of the air blast equipment.
It should be noted that, in the aerobic tank 52, microorganisms can perform a nitrification reaction with industrial wastewater and generate nitrified liquid, a reflux pump 56 for refluxing nitrified liquid at the water outlet of the aerobic tank 52 to the water inlet end of the anoxic tank 51 is provided in the aerobic tank 52, nitrified liquid at the water inlet end of the anoxic tank 51 is refluxed to perform a denitrification reaction in the anoxic tank 51, and a submerged impeller 57 is provided in the anoxic tank 51 to form a circulation flow between the anoxic tank 51 and the aerobic tank 52. The biological film falling off in the aerobic tank 52 enters the secondary sedimentation tank 6 through a pipeline to carry out solid-liquid separation, then is settled to the bottom of the secondary sedimentation tank 6 to form sludge, one part of the sludge flows back to the anoxic tank 51 to maintain the biomass in the whole A/O biochemical tank 5, and the other part of the sludge is discharged into the sludge tank 8 through a pipeline.
The secondary sedimentation tank 6 is communicated with the water outlet of the aerobic tank 52, so that the industrial wastewater treated by the A/O biochemical tank is subjected to mud-water separation under the action of gravity after entering the secondary sedimentation tank 6, and is separated into supernatant and lower sludge.
The magnetic coagulation sedimentation tank 7 is communicated with the water outlet of the secondary sedimentation tank 6 and is used for removing suspended matters, oil, total phosphorus, heavy metals and insoluble COD and BOD in the industrial wastewater, and realizing efficient decontamination and rapid sedimentation of the industrial wastewater.
The magnetic coagulation sedimentation tank 7 comprises a mixing tank 71, a magnetic mixing tank 72, a flocculation tank 73 and a sedimentation tank 74 which are sequentially communicated, wherein PAM is added in the mixing tank 71, magnetic powder is added in the magnetic mixing tank 72, PAC is added in the flocculation tank 73, a water inlet of the mixing tank 71 is communicated with a supernatant water outlet of the secondary sedimentation tank 6, a water inlet of the magnetic mixing tank 72 is communicated with a water outlet of the flocculation tank 73, the sedimentation tank 74 is communicated with a water outlet of the magnetic mixing tank 72, and a water inlet of the sedimentation tank 74 is communicated with a water outlet of the flocculation tank 73. A water outlet and a sludge discharge port are arranged in the sedimentation tank 74, and the sludge discharge port is communicated with the sludge tank 8 through a pipeline so that the flocs in the sedimentation tank 74 are discharged into the sludge tank 8.
Further, a stirrer 75 is provided in each of the mixing tank 71, the magnetic mixing tank 72 and the flocculation tank 73. After the supernatant in the secondary sedimentation tank 6 enters the mixing tank 71, pollutants in the wastewater are mixed with PAM to form flocs under the rapid stirring of the stirrer 75, then the flocs enter the magnetic mixing tank 72, the flocs and magnetic powder are mixed and enter the flocculation tank 73, the flocs are mixed with PAC under the slow stirring of the stirrer 75 in the flocculation tank 73 to form larger and denser flocs, and then the larger and denser flocs formed in the flocculation tank 73 enter the sedimentation tank 74 to be settled and separated under the action of gravity.
Further, the magnetic coagulation sedimentation tank 7 further comprises a magnetic separator 76, the magnetic separator 76 is located at the sludge outlet of the sedimentation tank 74, and the magnetic separator 76 is communicated with the sludge outlet of the sedimentation tank 74 and is used for recycling magnetic powder in the flocculating body settled in the sedimentation tank 74, so that the magnetic powder can be recycled.
Further, the water outlet of the sedimentation tank 74 is communicated with the metering tank 10 and the emergency tank 20, the metering tank 10 is used for metering the quantity of the sedimentation tank effluent, the water discharged from the water outlet of the metering tank 10 can be directly discharged or recycled, and the sedimentation tank 74 effluent stored in the emergency tank 20 can be used as emergency water.
The sludge tank 8 is used for temporarily storing sludge, and the sludge generated by the secondary sedimentation tank 6 and the flocs generated by the magnetic coagulation sedimentation tank 7 are communicated with the sludge tank 8 through pipelines.
The sludge dehydrator 9 is used for receiving the sludge in the sludge tank 8 and dehydrating the sludge so as to obtain a sludge cake with qualified water content and facilitate the outward transportation.
In addition, be provided with mud elevator pump 81 between effluent water sump and the sewage dehydration pond, mud elevator pump 81 is used for carrying out dehydration with the mud lift to the sewage dehydration pond in the effluent water sump to obtain the qualified mud cake of moisture content, in order to make things convenient for outward transport.
The working principle of the utility model is approximately as follows: the wastewater to be treated is collected to a water collecting tank 1, coarse floating matters in the wastewater are removed through a grid 11, then the wastewater is lifted by a lifting pump of the water collecting tank 1 and enters a regulating tank 2, and grid slag generated at the grid 11 is transported outwards for disposal; the stirring tank 21 lifts the average waste water into an air floatation tank by a lifting pump of the stirring tank 21, and after flocculant is added into the waste water by a dosing device 33, grease, suspended matters and the like in the waste water are brought to the water surface by micro bubbles generated by pressurized dissolved gas, and are discharged into a sludge tank 8 after being cleaned and collected by a slag scraper 34; the wastewater treated by the coagulation air floatation tank 3 is subjected to an UASB (upflow anaerobic sludge blanket) tank to remove organic matters, then is subjected to microbial reaction in the A/O biochemical tank 5 to remove pollutants such as COD (chemical oxygen demand), BOD (biochemical oxygen demand), SS (suspended solids) and the like, the biological membrane fallen in the aerobic tank 52 enters the secondary sedimentation tank 6 along with the effluent of the A/O biochemical tank 5 to carry out solid-liquid separation, then is settled to the bottom of the secondary sedimentation tank 6 to form sludge, one part of the sludge flows back into the anoxic tank 51 to maintain biomass in the A/O biochemical tank 5, and the other part of the sludge is discharged into the sludge tank 8; the supernatant fluid of the secondary sedimentation tank 6 enters a magnetic coagulation sedimentation tank 7 to further remove total phosphorus and suspended matters, and is discharged or recycled after being metered by a metering tank 10; the emergency pool 20 stores the effluent of the magnetic coagulation sedimentation tank 7 as emergency water, the sludge pool 8 receives floating slag of the air floatation tank, sludge generated by the UASB pool, sludge generated by the secondary sedimentation tank 6 and sludge generated by the magnetic coagulation sedimentation tank 7, the sludge is lifted into the sludge dehydrator 9 by the sludge lifting pump 81 to be dehydrated, filtrate generated by dehydration returns to the water collecting tank 1 to reenter the wastewater treatment system, and the dehydrated sludge is transported to be disposed.
The above description is only for the purpose of illustrating the technical solution of the present utility model and not for the purpose of limiting the same, and other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
1. A system for treating specific industrial wastewater, comprising:
a water collecting tank (1) communicated with the factory sewage pipe and used for receiving the industrial wastewater discharged from the factory;
the adjusting tank (2) is communicated with the water collecting tank (1) through a pipeline and is used for adjusting the water quality and the water quantity of industrial wastewater;
the coagulation air floatation tank (3) is communicated with the water outlet of the regulating tank (2) through a pipeline and is used for removing suspended particles in industrial wastewater;
the USBA pool (4) is communicated with the water outlet of the coagulation air floatation pool (3) through a pipeline and is used for degrading organic matters which are difficult to degrade by aerobic microorganisms in industrial wastewater;
the A/O biochemical tank (5) is communicated with the water outlet of the USBA tank (4) through a pipeline and is used for reducing the concentration of organic matters in industrial wastewater;
the secondary sedimentation tank (6) is communicated with the water outlet of the A/O biochemical tank (5) through a pipeline, so that industrial wastewater is subjected to mud-water separation in the secondary sedimentation tank (6) under the action of gravity and separated into supernatant and lower sludge;
the magnetic coagulation sedimentation tank (7) is communicated with the water outlet of the secondary sedimentation tank (6) and is used for removing suspended matters, oil, total phosphorus, heavy metals and insoluble COD and BOD in industrial wastewater, and comprises a mixing tank (71), a magnetic mixing tank (72), a flocculation tank (73) and a sedimentation tank (74) which are sequentially communicated, wherein magnetic powder is added into the magnetic mixing tank (72), and PAM and PAC are respectively added into the mixing tank (71) and the flocculation tank (73);
the sludge pool (8) is used for temporarily storing sludge, and sludge generated by the secondary sedimentation pool (6) and flocs generated by the magnetic coagulation sedimentation pool (7) are communicated with the sludge pool (8) through pipelines; and
and the sludge dehydrator (9) is communicated with the sludge tank (8) and is used for receiving the sludge in the sludge tank (8) and dehydrating the sludge.
2. A treatment system for special industrial waste water according to claim 1, characterized in that the mixing tank (71), the magnetic mixing tank (72) and the flocculation tank (73) are provided with a stirrer (75).
3. A treatment system for special industrial wastewater according to claim 1, characterized in that the sedimentation tank (74) is provided with a water outlet and a sludge outlet, water discharged from the water outlet can be directly discharged or recycled, and the sludge outlet is communicated with the sludge tank (8) through a pipeline, so that flocs generated by the flocculation tank (73) enter the sedimentation tank to be settled and then are discharged into the sludge tank (8) through the sludge outlet.
4. A treatment system for special industrial wastewater according to claim 3, characterized in that the magnetic coagulation sedimentation tank (7) further comprises a magnetic separator (76), the magnetic separator (76) is located at the sludge discharge port of the sedimentation tank (74), and the magnetic separator (76) is communicated with the sludge discharge port of the sedimentation tank (74).
5. A treatment system for special industrial waste water according to claim 1, characterized in that a grating (11) and a sump lift pump (12) are arranged in the sump (1), the grating (11) is used for removing impurities and floats in industrial waste water, the sump lift pump (12) is arranged on one side of the sump (1) far away from the grating (11), and the sump lift pump (12) is used for conveying industrial waste water in the sump (1) into the regulating tank (2).
6. A treatment system for special industrial waste water according to claim 1, characterized in that the regulating tank (2) comprises a stirring tank (21) and a buffer tank (22), wherein the stirring tank (21) and the buffer tank (22) are both communicated with the water collecting tank (1), and the buffer tank (22) is communicated with the stirring tank (21) through a pipeline, and submersible stirrers (211) are arranged in the stirring tank (21) and the buffer tank (22) so as to fully stir the industrial waste water in the stirring tank (21) and the buffer tank (22) and ensure that particles in the industrial waste water are not easy to deposit on the bottom of the stirring tank (21) and the buffer tank (22).
7. The treatment system for special industrial wastewater according to claim 1, wherein the coagulation air floatation tank (3) comprises a first air floatation tank (31) and a second air floatation tank (32) and a dosing device (33) for dosing coagulant to the first air floatation tank (31) and the second air floatation tank (32), the water inlet end of the first air floatation tank (31) is communicated with the stirring tank (21), the second air floatation tank (32) is communicated with the first air floatation tank (31), and scum generated by the first air floatation tank (31) and the second air floatation tank (32) is discharged into the sludge tank (8) through pipelines.
8. A treatment system for special industrial waste water according to claim 1, characterized in that a sludge pump (41) is further arranged in the USBA tank (4), which sludge pump (41) is used for discharging sludge in the USBA tank (4) into the sludge tank (8).
9. The treatment system for special industrial wastewater according to claim 1, wherein the A/0 biochemical tank comprises an anoxic tank (51) and an aerobic tank (52), a water inlet of the anoxic tank (51) is communicated with a USBA tank (4), a water inlet of the aerobic tank (52) is communicated with a water outlet of the anoxic tank (51), elastic fillers (54) are arranged in the anoxic tank (51) and the aerobic tank (52), and the elastic fillers (54) are accommodated in the industrial wastewater so as to allow microorganisms in the anoxic tank (51) and the aerobic tank (52) to carry out film hanging growth.
10. A treatment system for special industrial waste water according to claim 9, characterized in that the bottom side of the aerobic tank (52) is provided with membrane aerators (55), which membrane aerators (55) are evenly distributed on the bottom side of the aerobic tank (52) for air diffusion and oxygenation in the aerobic tank (52).
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| CN202321685609.8U CN220132055U (en) | 2023-06-29 | 2023-06-29 | Treatment system for special industrial wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117510000A (en) * | 2024-01-08 | 2024-02-06 | 福建福田纺织印染科技有限公司 | Dyeing and finishing wastewater treatment equipment and treatment method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117510000A (en) * | 2024-01-08 | 2024-02-06 | 福建福田纺织印染科技有限公司 | Dyeing and finishing wastewater treatment equipment and treatment method thereof |
| CN117510000B (en) * | 2024-01-08 | 2024-03-15 | 福建福田纺织印染科技有限公司 | Dyeing and finishing wastewater treatment equipment and treatment method thereof |
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