CN211141834U - Fine chemical industry park sewage treatment system - Google Patents
Fine chemical industry park sewage treatment system Download PDFInfo
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- CN211141834U CN211141834U CN201922091813.7U CN201922091813U CN211141834U CN 211141834 U CN211141834 U CN 211141834U CN 201922091813 U CN201922091813 U CN 201922091813U CN 211141834 U CN211141834 U CN 211141834U
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Abstract
The utility model discloses a sewage treatment system for a fine chemical industry park, which belongs to the technical field of wastewater treatment. Meticulous chemical industry park sewage treatment system includes preprocessing device, coagulating sedimentation tank, hydrolysis-acidification pool, improvement type AO pond, two heavy ponds, ozone filtering pond and the gradation filtering pond that sets gradually along the sewage treatment direction, preprocessing device include the grid well and with the equalizing basin that grid well delivery port is connected, the water exit linkage of equalizing basin coagulating sedimentation tank, coagulating sedimentation tank and two heavy ponds are connected mud respectively and are tamed the pond, two partial mud that sink the pond flow back to improvement type AO pond. The utility model discloses can effectively get rid of the pollutant concentration in the waste water, make waste water reach the requirement of relevant standard.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, especially, relate to a meticulous chemical industry garden sewage treatment system.
Background
A certain fine chemical development area is an important national fine chemical base, and the development area fully develops and utilizes chlorine, carbon monoxide and other raw materials formed in salt chemical industry and coal chemical industry to develop TDI (polyurethane coating curing agent), HDI (polyurethane coating) and PC (polycarbonate engineering plastics). The productivity of the solar crystalline silicon wafer cutting and grinding edge material is enlarged, and the semiconductor crystalline silicon wafer cutting and grinding edge material is developed. The integrated process of product project integration, material transmission integration, environment protection integration, public engineering integration and management service integration in the gathering area is promoted in an effort. The comprehensive sewage treatment project of the fine chemical development area is a construction project for treating comprehensive industrial sewage and living, the daily treatment capacity is designed to be 2.0 ten thousand tons, wherein 0.5 ten thousand tons is already built, and the treatment capacity needs to be increased by 1.5 ten thousand tons.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to solve the technical problem that a meticulous chemical industry garden sewage treatment system is provided to pollutant in the sewage is effectively got rid of, makes sewage discharge to reach standard.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
meticulous chemical industry park sewage treatment system includes preprocessing device, coagulating sedimentation tank, hydrolysis-acidification pool, improvement type AO pond, two heavy ponds, ozone filtering pond and the gradation filtering pond that sets gradually along the sewage treatment direction, preprocessing device include the grid well and with the equalizing basin that grid well delivery port is connected, the water exit linkage of equalizing basin coagulating sedimentation tank, coagulating sedimentation tank and two heavy ponds are connected mud respectively and are tamed the pond, two partial mud that sink the pond flow back to improvement type AO pond.
Preferably, the improved a/O tank comprises an anoxic tank connected with the water outlet of the hydrolysis acidification tank and an aerobic tank connected with the water outlet of the anoxic tank, the water outlet of the aerobic tank is connected with the secondary sedimentation tank, part of nitrified liquid in the aerobic tank flows back to the anoxic tank, and the aerobic tank is connected with an aeration device.
Preferably, the coagulating sedimentation tank is connected with a first sludge well, the secondary sedimentation tank is connected with a second sludge well, and the first sludge well and the second sludge well are respectively connected with a sludge domestication tank.
Preferably, the sludge domestication pond is connected with the sludge concentration pond and the sludge dewatering machine room in sequence.
Preferably, the supernatant of the sludge concentration tank and the percolate of the sludge dewatering machine room respectively return to the regulating tank.
Preferably, the coagulating sedimentation tank is connected with a dosing device.
Preferably, the water outlet of the graded filter tank is connected with a disinfection tank, and part of the outlet water of the disinfection tank flows back to the graded filter tank for backwashing.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses to this fine chemistry industry garden sewage characteristics and processing requirement, adopt reasonable process route, the processing technology is advanced, handles out water quality of water discharge to reach standard, and the operation is stable, reliable.
By adopting the treatment process, the COD and the BOD which are target pollutants of the sewage of the fine chemical industry park5、TN、SS、NH3the-N and TP are treated to the limit value which meets the requirement of A-grade standard of the first-grade standard GB18918-2002 of pollutant discharge Standard of urban Sewage treatment plant, and the effect is obvious.
Drawings
FIG. 1: the utility model discloses a processing flow chart of a sewage treatment system in a fine chemical industry park;
wherein: 1-grid well, 2-regulating tank, 3-coagulating sedimentation tank, 4-hydrolysis acidification tank, 5-improved A/O tank, 6-secondary sedimentation tank, 7-ozone filter tank, 8-grading filter tank, 9-sludge domestication tank, 10-sludge concentration tank, 11-sludge dewatering machine room, 12-sludge well I, 13-sludge well II, 14-disinfection tank and 15-dosing equipment.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, meticulous chemical industry park sewage treatment system, include the preprocessing device who sets gradually along the sewage treatment direction, coagulating sedimentation tank 3, hydrolysis-acidification tank 4, improvement type AO pond 5, two heavy ponds 6, ozone filter 7 and grading filter 8, preprocessing device includes grid well 1 and the equalizing basin 2 of being connected with grid well 1 delivery port, the water outlet connection coagulating sedimentation tank 3 of equalizing basin 2, coagulating sedimentation tank 3 and two heavy ponds 6 are connected mud respectively and are tamed pond 9, the partial mud backward flow of two heavy ponds 6 to improvement type AO pond 5.
The improved A/O pool 5 comprises an anoxic pool connected with the water outlet of the hydrolytic acidification pool 4 and an aerobic pool connected with the water outlet of the anoxic pool, the water outlet of the aerobic pool is connected with a secondary sedimentation pool 6, part of nitrified liquid in the aerobic pool flows back to the anoxic pool, and the aerobic pool is connected with aeration equipment.
The coagulating sedimentation tank 3 is connected with a first sludge well 12, the secondary sedimentation tank 6 is connected with a second sludge well 13, and the first sludge well 12 and the second sludge well 13 are respectively connected with a sludge domestication tank 9.
The sludge domestication pond 9 is sequentially connected with a sludge concentration pond 10 and a sludge dewatering machine room 11.
The supernatant of the sludge concentration tank 10 and the percolate of the sludge dewatering machine room 11 respectively flow back to the regulating tank 2.
The coagulating sedimentation tank 3 is connected with a dosing device 15.
The water outlet of the graded filter 8 is connected with a disinfection tank 14, and part of the outlet water of the disinfection tank 14 flows back to the graded filter 8 for backwashing.
Sewage enters a grid well 1 through a pipeline, the grid well 1 adopts a double-channel design, a simple grid and a rotary filter screen are arranged, so that the grid well is convenient to use and maintain, large suspended matters (pollutants such as finishing waste materials and the like) are removed, effluent enters an adjusting tank 2, and the sewage is adjusted in the adjusting tank 2 to adjust the water quantity and homogenize the water quality; the effluent is lifted into a coagulating sedimentation tank 3 by a pump, and colloidal particles are generated by adding a flocculating agent, so that COD (chemical oxygen demand) and SS (suspended substances) in the wastewater are further removed.
The effluent of the coagulating sedimentation tank 3 enters a hydrolysis acidification tank 4, and microorganisms in the hydrolysis acidification tank 4 convert macromolecules and inorganic matters which are difficult to degrade into micromolecular organic matters which are easy to biodegrade, so that the subsequent biological treatment efficiency is improved. The water discharged from the hydrolysis acidification tank 4 enters an improved A/O system, the wastewater enters an anoxic tank, the anoxic tank receives the effluent from the hydrolysis acidification tank 4 and nitrified liquid returned from an aerobic tank to perform denitrification reaction, ammonia in the sewage is finally removed in the form of nitrogen, the effluent from the anoxic tank enters the aerobic tank, the sewage completes nitrosation and nitrification reaction in the aeration state of the aerobic tank, and microorganisms in the tank decompose and digest pollutants in the water through aerobic action to degrade organic matters into water and carbon dioxide, so that the water quality is purified.
The effluent of the aerobic tank enters a secondary sedimentation tank 6 for mud-water separation, the effluent of the secondary sedimentation tank 6 enters an ozone filter tank 7, the ozone filter tank 7 controls the degree of nitration reaction and denitrification reaction according to different settings of the position of an aeration pipeline, and the nitrification reaction or denitrification reaction can be carried out independently to remove all degradable pollutants, namely carbon-containing pollutants (COD)crAnd BOD5) Suspended matter (SS), ammonia nitrogen and nitrate (i.e. total nitrogen).
The outlet water of the ozone filter 7 enters the graded filter 8, and the chromaticity of the outlet water and the content of suspended matters are greatly reduced under the action of quartz sand filter materials and active carbon. The effluent of the grading filter 8 enters a disinfection tank 14, and the contact disinfection time is controlled by adding a disinfectant, so that the effluent quality can be greatly improved, bacteria and pathogenic bacteria in the water body are effectively killed, and the number of viruses and pathogenic bacteria in the effluent reaches the discharge standard; part of the effluent of the disinfection tank 14 flows back to the grading filter 8, and the rest is discharged or recycled.
The sludge in the secondary sedimentation tank 6 and the coagulating sedimentation tank 3 enters a sludge domestication tank 9, the surface supernatant liquid flows back to the regulating tank 2 and enters the system again for treatment; the bottom sludge is domesticated to be in a stable state, enters a sludge concentration tank 10, is lifted by a sludge pump to enter a sludge dewatering machine room 11 for concentration and dewatering, and percolate of a concentration dewatering machine flows back to a regulating tank 2 and enters a system again for treatment; and (5) carrying out the treatment on the dehydrated dry mud.
The utility model discloses the device is used for handling certain fine chemical industry garden sewage, and the basic data is as follows:
1) treatment scale: 15000m3D, 24 hours of operation a day, 625m3/h。
2) Designing the quality of inlet water: the park wastewater quality data is as follows:
note: the inlet water does not contain toxic substances such as heavy metals and the like.
After the treatment by the treatment system, the analysis results of the removal rate of the main pollutants in the sewage treatment effect are as follows:
as can be seen from the above table, the discharged water quality meets the A-grade standard requirement of the primary standard in GB18918-2002, namely pollutant discharge standard of urban sewage treatment plant, and the pollutant removal efficiency is high.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. Fine chemical industry garden sewage treatment system, its characterized in that: include along the preprocessing device, coagulating sedimentation tank, hydrolysis-acidification pool, improvement type AO pond, two heavy ponds, ozone filtering pond and the gradation filtering pond that set gradually of sewage treatment direction, preprocessing device include the grid well and with the equalizing basin that grid well delivery port is connected, the water exit linkage of equalizing basin coagulating sedimentation tank, coagulating sedimentation tank and two heavy ponds are connected mud respectively and are tamed the pond, the partial mud of two heavy ponds flows back to improvement type AO pond.
2. The fine chemical industrial park sewage treatment system of claim 1, wherein: the improved A/O pool comprises an anoxic pool connected with the water outlet of the hydrolysis acidification pool and an aerobic pool connected with the water outlet of the anoxic pool, the water outlet of the aerobic pool is connected with the secondary sedimentation pool, part of nitrified liquid in the aerobic pool flows back to the anoxic pool, and the aerobic pool is connected with aeration equipment.
3. The fine chemical industrial park sewage treatment system of claim 2, wherein: the coagulating sedimentation tank is connected with a first sludge well, the secondary sedimentation tank is connected with a second sludge well, and the first sludge well and the second sludge well are respectively connected with a sludge domestication tank.
4. The fine chemical industrial park sewage treatment system of claim 3, wherein: the sludge domestication tank is sequentially connected with a sludge concentration tank and a sludge dewatering machine room.
5. The fine chemical industrial park sewage treatment system of claim 4, wherein: and respectively refluxing the supernatant of the sludge concentration tank and the percolate of the sludge dewatering machine room to the regulating tank.
6. The fine chemical industrial park sewage treatment system of claim 5, wherein: the coagulating sedimentation tank is connected with a dosing device.
7. The fine chemical industrial park sewage treatment system of any one of claims 1 to 6, wherein: and a water outlet of the graded filter tank is connected with a disinfection tank, and part of effluent of the disinfection tank flows back to the graded filter tank for backwashing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922091813.7U CN211141834U (en) | 2019-11-28 | 2019-11-28 | Fine chemical industry park sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922091813.7U CN211141834U (en) | 2019-11-28 | 2019-11-28 | Fine chemical industry park sewage treatment system |
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| CN211141834U true CN211141834U (en) | 2020-07-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279434A (en) * | 2020-10-27 | 2021-01-29 | 东方铭科建设有限公司 | Water pollution multi-stage treatment and purification method |
| CN112707586A (en) * | 2020-12-04 | 2021-04-27 | 水清华(天津)环保科技有限公司 | DM sewage treatment technology |
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2019
- 2019-11-28 CN CN201922091813.7U patent/CN211141834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279434A (en) * | 2020-10-27 | 2021-01-29 | 东方铭科建设有限公司 | Water pollution multi-stage treatment and purification method |
| CN112707586A (en) * | 2020-12-04 | 2021-04-27 | 水清华(天津)环保科技有限公司 | DM sewage treatment technology |
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