CN214383747U - Processing system of high COD waste water - Google Patents
Processing system of high COD waste water Download PDFInfo
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- CN214383747U CN214383747U CN202120106579.5U CN202120106579U CN214383747U CN 214383747 U CN214383747 U CN 214383747U CN 202120106579 U CN202120106579 U CN 202120106579U CN 214383747 U CN214383747 U CN 214383747U
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Abstract
The utility model provides a processing system of high COD waste water, including anaerobic treatment unit, good oxygen processing unit, the sedimentation tank, the pond is cultivateed to mud, anaerobic treatment unit links to each other with good oxygen processing unit, anaerobic treatment unit includes the equalizing basin, anaerobism sludge bed reactor, the equalizing basin provides high COD waste water to anaerobism sludge bed reactor, good oxygen processing unit includes at least one good oxygen pond, the sedimentation tank links to each other with good oxygen pond through first pipeline, this sedimentation tank is through flocculation and precipitation pond, external drainage, the bottom of sedimentation tank is passed through the second pipeline and is cultivateed the pond with mud and link to each other, be equipped with the mud pump on the second pipeline, first valve, the inner space in pond is cultivateed to mud is sealed, be equipped with agitating unit in the pond is cultivateed to mud, the pond is cultivateed to mud provides anaerobism sludge bed reactor through the screw pump and gives anaerobism mud. The utility model has the advantages of being simple in structure and convenient in operation, turn into anaerobic sludge through the excess sludge who will good oxygen pond production, and supply to the anaerobic treatment unit, can effectively guarantee anaerobic treatment unit's COD clearance.
Description
Technical Field
The utility model relates to a chemical industry field, in particular to processing system of high COD waste water.
Background
At present, domestic industrial sewage, especially chemical wastewater treatment, is mostly treated by adopting a biodegradation mode. Aiming at chemical wastewater with high COD content, an anaerobic and aerobic technical scheme is generally adopted. The domestic anaerobic treatment process comprises anaerobic contact method, Anaerobic Filter (AF), Upflow Anaerobic Sludge Blanket (UASB) reactor, Anaerobic Fluidized Bed (AFB), AAFEB, anaerobic biological rotating disk (ARBC), baffle type anaerobic reactor and other process methods.
In the high COD chemical wastewater treatment process in the chemical field, no matter a UASB anaerobic process, an AF anaerobic process or an IC anaerobic process is adopted, the phenomenon of sludge leakage of an anaerobic tank can occur, so that after the anaerobic tank operates for a period of time, the anaerobic sludge in the tank is reduced, the sewage treatment performance is reduced, and the effluent index is unqualified.
In order to ensure the normal operation of the sewage anaerobic tank, the normal operation of the anaerobic tank can be maintained only by periodically supplementing anaerobic sludge. Due to the scarcity of anaerobic sludge, high delivery cost and long transportation period, the operation cost of treating chemical wastewater by enterprises is high and the environmental-friendly discharge risk is high.
In addition, in the biochemical treatment process of the wastewater, the microorganisms of the activated sludge in the aerobic tank continuously degrade and consume the organic substances in the wastewater. Among the consumed organic substances, a part of the organic substances is oxidized to provide energy required for the vital activities of microorganisms, and the other part of the organic substances is utilized by the microorganisms to synthesize new cytoplasm, and the microorganisms are continuously metabolized while a part of the microorganisms die to produce excess sludge. Generally, enterprises can regularly discharge the residual sludge in the aerobic tank to a sludge concentration tank, add a flocculating agent (PAM or PAC), filter and press the residual sludge into a sludge cake (with the water content of 70-85%) by a filter press, and treat the sludge cake in a centralized landfill or incineration mode, so that the operation cost and the environmental protection pressure of the enterprises are increased.
Therefore, how to effectively utilize the excess sludge byproduct in the aerobic tank and supplement the reduced anaerobic sludge in the anaerobic tank is a problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at the not enough of prior art, provide a processing system of high COD waste water, its simple structure, convenient operation turn into anaerobic sludge through the excess sludge who will good oxygen pond production, and supply to the anaerobic treatment unit, can effectively guarantee anaerobic treatment unit's COD clearance.
The technical scheme of the utility model is that: the utility model provides a processing system of high COD waste water, includes anaerobic treatment unit, good oxygen processing unit, sedimentation tank, mud culture pond, and anaerobic treatment unit links to each other with good oxygen processing unit, and anaerobic treatment unit is located good oxygen processing unit's upper reaches, anaerobic treatment unit includes equalizing basin, at least one anaerobism sludge bed reactor, and the equalizing basin links to each other with high COD waste water source, and provides high COD waste water to anaerobism sludge bed reactor, good oxygen processing unit includes at least one good oxygen pond, and the bottom in good oxygen pond is equipped with the breather pipe, and links to each other with the air source, the sedimentation tank passes through first pipeline and links to each other with good oxygen pond, and this sedimentation tank is through the flocculation sedimentation tank, external drainage, the bottom of sedimentation tank passes through the second pipeline and links to each other with mud culture pond, is equipped with sludge discharge pump, first valve on the second pipeline, and first valve is located sludge discharge pump's low reaches, sludge culture pond's inner space is sealed, the sludge culture tank is internally provided with a stirring device and supplies anaerobic sludge to the anaerobic sludge bed reactor through a screw pump.
Still include sludge thickening tank, pressure filter, sludge thickening tank passes through the fourth pipeline and links to each other with the bottom of flocculation and precipitation pond, and links to each other with the second pipeline through the fifth pipeline, is located between mud pump and the first valve, be equipped with the second valve on the fifth pipeline, sludge thickening tank provides concentrated mud to the pressure filter through the sixth pipeline, and concentrated mud's SV30 is greater than 80%.
The device also comprises a seventh pipeline, wherein the upstream end of the seventh pipeline is connected with the second pipeline and is positioned between the sludge pump and the first valve, the downstream end of the seventh pipeline is connected with the aerobic tank, and the seventh pipeline is provided with a third valve.
The anaerobic treatment unit also comprises a mixing tank, the regulating tank provides high COD wastewater for the mixing tank, the mixing tank is connected with the anaerobic sludge bed reactor through a third pipeline, and a wastewater pump is arranged on the third pipeline.
The air source is provided by a Roots blower.
The sedimentation tank is connected with the flocculation sedimentation tank through an overflow pipe.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the high COD wastewater treatment system comprises an anaerobic treatment unit, an aerobic treatment unit, a sedimentation tank and a sludge culture tank, wherein the anaerobic treatment unit is used for carrying out anaerobic treatment on the high COD wastewater, the aerobic treatment unit is used for carrying out aerobic treatment on the wastewater subjected to the anaerobic treatment, the sedimentation tank is used for intercepting aerobic sludge discharged by the aerobic treatment unit, and the sludge culture tank is used for converting the intercepted aerobic sludge into anaerobic sludge. The anaerobic treatment unit is connected with the aerobic treatment unit, the anaerobic treatment unit is positioned at the upstream of the aerobic treatment unit, COD wastewater subjected to anaerobic treatment by the anaerobic treatment unit is discharged into the aerobic treatment unit, and the wastewater meeting the discharge requirement is obtained after aerobic treatment. The anaerobic treatment unit comprises a regulating tank and at least one anaerobic sludge bed reactor, the regulating tank is connected with a high COD wastewater source and provides high COD wastewater for the anaerobic sludge bed reactor, the high COD wastewater generated by a chemical enterprise enters the anaerobic sludge bed reactor after passing through the regulating tank, anaerobic treatment is carried out by anaerobic bacteria in the anaerobic sludge bed reactor, and partial organic matters in the anaerobic sludge bed reactor are degraded and consumed. The aerobic treatment unit comprises at least one aerobic tank, the bottom of the aerobic tank is provided with a vent pipe and is connected with an air source, the high COD wastewater entering the aerobic tank is fully aerated in the aerobic tank and is subjected to aerobic bacteria-equalizing aerobic treatment, and most organic matters are degraded and consumed to obtain the low COD wastewater. The sedimentation tank links to each other with good oxygen pond through first pipeline, this sedimentation tank is through the flocculation and precipitation pond, external drainage, the low COD waste water that obtains in good oxygen pond gets into the sedimentation tank earlier, be mingled with surplus sludge in these waste waters, and layering in the sedimentation tank, the bottom of a pool at the sedimentation tank is piled up to surplus sludge wherein, clear solution wherein is on the upper portion of sedimentation tank, arrange to the flocculation and precipitation pond through the overflow, after the flocculating agent is handled, get rid of most suspended solid wherein, make discharged waste water satisfy the emission requirement, and the surplus sludge volume that is mingled with is little, avoid the waste of surplus sludge, and reduce the environmental protection and discharge the risk. The bottom of the sedimentation tank is connected with the sludge culture tank through a second pipeline, the second pipeline is provided with a sludge discharge pump and a first valve, the first valve is positioned at the downstream of the sludge discharge pump, and the residual sludge accumulated at the bottom of the sedimentation tank is pumped to the sludge culture tank through the sludge discharge pump. The sludge culture tank is internally sealed, a stirring device is arranged in the sludge culture tank, anaerobic sludge is provided for the anaerobic sludge bed reactor through a screw pump by the sludge culture tank, residual sludge entering the sludge culture tank in the sealed space is subjected to storage, anaerobic treatment, digestion and organic substance addition under the anaerobic condition, anaerobic sludge with high organic load and good sedimentation performance is obtained through culture, and is supplemented to the anaerobic sludge bed reactor through the screw pump, so that the problems of high operation cost and high environmental protection pressure caused by the fact that the traditional residual sludge is compressed into mud cakes are solved, the sludge is converted into anaerobic sludge, the lost sludge is supplemented to an anaerobic treatment unit, the treatment performance of the anaerobic treatment unit is ensured, and the long-time normal operation of a wastewater treatment system is ensured.
2. Still include sludge thickening tank, pressure filter, sludge thickening tank passes through the fourth pipeline and links to each other with the bottom of flocculation and precipitation pond, and links to each other with the second pipeline through the fifth pipeline, is located between mud pump and the first valve, be equipped with the second valve on the fifth pipeline, sludge thickening tank provides concentrated mud to the pressure filter through the sixth pipeline, and the SV30 of concentrated mud is greater than 80%, and the unnecessary good oxygen mud of sedimentation tank to and the precipitate that obtains at the flocculation and precipitation pond, discharge into sludge thickening tank, through the supernatant of discharging sludge thickening tank gradually, send the unnecessary good oxygen mud after the concentration, precipitate to the pressure filter compression again and be the mud cake, satisfy processing system's long-time operation needs, and the mud cake volume is less, can also reduce enterprise's environmental protection pressure.
3. The device also comprises a seventh pipeline, wherein the upstream end of the seventh pipeline is connected with the second pipeline and is positioned between the sludge discharge pump and the first valve, the downstream end of the seventh pipeline is connected with the aerobic tank, the seventh pipeline is provided with a third valve, and the intercepted part of residual sludge can also directly return to the aerobic tank to be used as aerobic sludge, so that the actual requirements of enterprises are met.
4. The anaerobic treatment unit is still including mixing the pond, the equalizing basin provides high COD waste water to mixing the pond, and mixing the pond and link to each other anaerobic sludge bed reactor through the third pipeline, is equipped with the wastewater pump on this third pipeline, and high COD waste water is through mixing, buffering back, reentrant anaerobic treatment unit carries out anaerobic treatment, reduces the impact dynamics of high COD waste water to anaerobic sludge, reduces anaerobic sludge's the mud rate of running.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
In the drawing, 1 is an anaerobic treatment unit, 2 is an aerobic treatment unit, 3 is a sedimentation tank, 4 is a sludge culture tank, 5 is a regulating tank, 6 is an anaerobic sludge bed reactor, 7 is an aerobic tank, 8 is a flocculation sedimentation tank, 9 is a sludge discharge pump, 10 is a screw pump, 11 is a sludge concentration tank, 12 is a filter press, 13 is a mixing tank, 14 is a wastewater pump, 15 is an overflow pipe, 101 is a first pipeline, 102 is a second pipeline, 103 is a third pipeline, 104 is a fourth pipeline, 105 is a fifth pipeline, 106 is a sixth pipeline, 107 is a seventh pipeline, a is a first valve, b is a second valve, and c is a third valve.
Detailed Description
The utility model discloses in, do not mark the device, the equipment of specific structure, adopt the conventional device or the equipment in chemical industry field usually, do not mark the installation, the connected mode that adopt the conventional installation in chemical industry field usually of specific installation, connected mode or install, connect according to the guide suggestion of producer.
Referring to fig. 1, a specific embodiment of a system for treating high COD wastewater is shown. The high COD wastewater treatment system comprises an anaerobic treatment unit 1, an aerobic treatment unit 2, a sedimentation tank 3 and a sludge culture tank 4. The anaerobic treatment unit 1 is connected to the aerobic treatment unit 2, and the anaerobic treatment unit 1 is located upstream of the aerobic treatment unit 2. Anaerobic treatment unit 1 includes equalizing basin 5, at least one anaerobism sludge bed reactor 6, and equalizing basin 5 links to each other with high COD wastewater source, and provides high COD waste water to anaerobism sludge bed reactor 6, and in this embodiment, the quantity of anaerobism sludge bed reactor (UASB) is two, and parallelly connected, and anaerobic treatment unit 1 still includes mixed pond 13, equalizing basin 5 provides high COD waste water to mixed pond 13, and mixed pond 13 links to each other with two parallelly connected anaerobism sludge bed reactors 6 respectively through third pipeline 103, is equipped with waste water pump 14 on this third pipeline 103. The aerobic treatment unit 2 comprises at least one aerobic tank 7, the bottom of the aerobic tank 7 is provided with a vent pipe and is connected with an air source, in the embodiment, the number of the aerobic tanks is two, the aerobic tanks are connected in series, and the air source is provided by a Roots blower and is used for providing fresh air for the aerobic tanks. The aerobic tank positioned at the upstream is connected with the two anaerobic sludge bed reactors through a pipeline. The sedimentation tank 3 is connected with an aerobic tank located at the downstream through a first pipeline 101, the sedimentation tank 3 discharges water to the outside through a flocculation sedimentation tank 8, and specifically, the sedimentation tank 3 is connected with the flocculation sedimentation tank 8 through an overflow pipe 15. The bottom of the sedimentation tank 3 is connected with a sludge culture tank 4 through a second pipeline 102, a sludge discharge pump 9 and a first valve a are arranged on the second pipeline 102, the first valve a is located at the downstream of the sludge discharge pump 9, the inner space of the sludge culture tank 4 is closed, a stirring device is arranged in the sludge culture tank 4, the sludge culture tank 4 supplies anaerobic sludge to an anaerobic sludge bed reactor 6 through a screw pump 10, specifically, the sedimentation tank further comprises a seventh pipeline 107, the upstream end of the seventh pipeline 107 is connected with the second pipeline 102 and located between the sludge discharge pump 9 and the first valve a, the downstream end of the seventh pipeline 107 is respectively connected with an aerobic tank located at the upstream and an aerobic tank located at the downstream, and a third valve c is arranged on the seventh pipeline 107.
Further, still include sludge concentration tank 11, pressure filter 12, sludge concentration tank 11 passes through fourth pipeline 104 and links to each other with the bottom of flocculation and precipitation pond 8, and links to each other with second pipeline 102 through fifth pipeline 105, is located between sludge pump 9 and the first valve a, be equipped with second valve b on the fifth pipeline 105, sludge concentration tank 11 provides concentrated sludge to pressure filter 12 through sixth pipeline 106, and the SV30 of concentrated sludge is greater than 80%.
The utility model discloses a theory of operation does, the high COD waste water that the chemical industry enterprise produced, get into the mixing tank through the equalizing basin, through mixing, the buffering back, pump respectively to two parallelly connected anaerobism sludge bed reactors in by the third pipeline, after anaerobic treatment, arrange to the good oxygen pond that is located the upper reaches, after one-level good oxygen treatment, arrange to the good oxygen pond that is located the low reaches, carry out second grade good oxygen treatment, arrange to the sedimentation tank in, wherein the surplus sludge who is mingled with deposits to the bottom, supernatant overflow to flocculation and precipitation pond, add the flocculating agent and subside the back, supernatant in the flocculation and precipitation pond can externally discharge, and satisfy emission standard. And pumping the residual sludge deposited at the bottom of the sedimentation tank into a sludge culture tank through a second pipeline, stirring, ensuring that the temperature in the sludge culture tank is 25-38 ℃, adding high-COD wastewater according to 1/5 of the volume of the sludge culture tank, and treating the wastewater according to the ratio of C: n: p300: 5: adding nitrogen fertilizer and phosphate fertilizer according to the proportion of 1, adding a small amount of elements such as cobalt, nickel, calcium and the like, keeping the pH value in the sludge culture tank to be 6.5-7.5, culturing for 50-90d, pumping into two anaerobic sludge bed reactors connected in parallel through a screw pump, supplementing lost anaerobic sludge, and gradually increasing the water inlet load after 3 d.
Claims (6)
1. The utility model provides a processing system of high COD waste water which characterized in that: comprises an anaerobic treatment unit (1), an aerobic treatment unit (2), a sedimentation tank (3) and a sludge culture tank (4), wherein the anaerobic treatment unit (1) is connected with the aerobic treatment unit (2), the anaerobic treatment unit (1) is positioned at the upstream of the aerobic treatment unit (2),
the anaerobic treatment unit (1) comprises a regulating tank (5) and at least one anaerobic sludge bed reactor (6), the regulating tank (5) is connected with a high COD wastewater source and provides high COD wastewater for the anaerobic sludge bed reactor (6),
the aerobic treatment unit (2) comprises at least one aerobic tank (7), the bottom of the aerobic tank (7) is provided with a vent pipe and is connected with an air source,
the sedimentation tank (3) is connected with the aerobic tank (7) through a first pipeline (101), the sedimentation tank (3) discharges water outwards through the flocculation sedimentation tank (8),
the bottom of the sedimentation tank (3) is connected with the sludge culture tank (4) through a second pipeline (102), a sludge pump (9) and a first valve (a) are arranged on the second pipeline (102), the first valve (a) is positioned at the downstream of the sludge pump (9),
the internal space of the sludge culture tank (4) is closed, a stirring device is arranged in the sludge culture tank (4), and the sludge culture tank (4) provides anaerobic sludge for the anaerobic sludge bed reactor (6) through a screw pump (10).
2. The high COD wastewater treatment system according to claim 1, wherein: also comprises a sludge concentration tank (11) and a filter press (12),
the bottom that sludge concentration pond (11) passed through fourth pipeline (104) and flocculation and precipitation pond (8) links to each other, and links to each other with second pipeline (102) through fifth pipeline (105), lies in between dredge pump (9) and first valve (a), be equipped with second valve (b) on fifth pipeline (105), sludge concentration pond (11) provide concentrated mud through sixth pipeline (106) to pressure filter (12), and the SV30 of concentrated mud is greater than 80%.
3. The high COD wastewater treatment system according to claim 1, wherein: the sludge treatment device is characterized by further comprising a seventh pipeline (107), wherein the upstream end of the seventh pipeline (107) is connected with the second pipeline (102) and is positioned between the sludge pump (9) and the first valve (a), the downstream end of the seventh pipeline (107) is connected with the aerobic tank (7), and a third valve (c) is arranged on the seventh pipeline (107).
4. The high COD wastewater treatment system according to claim 1, wherein: the anaerobic treatment unit (1) further comprises a mixing tank (13), the regulating tank (5) provides high COD wastewater for the mixing tank (13), the mixing tank (13) is connected with the anaerobic sludge bed reactor (6) through a third pipeline (103), and a wastewater pump (14) is arranged on the third pipeline (103).
5. The high COD wastewater treatment system according to claim 1, wherein: the air source is provided by a Roots blower.
6. The high COD wastewater treatment system according to claim 1, wherein: the sedimentation tank (3) is connected with the flocculation sedimentation tank (8) through an overflow pipe (15).
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| CN202120106579.5U CN214383747U (en) | 2021-01-15 | 2021-01-15 | Processing system of high COD waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804362A (en) * | 2022-05-27 | 2022-07-29 | 上海泓济环保科技股份有限公司 | Device for recovering and improving sludge activity in biochemical treatment of high-salinity wastewater and using method |
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2021
- 2021-01-15 CN CN202120106579.5U patent/CN214383747U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804362A (en) * | 2022-05-27 | 2022-07-29 | 上海泓济环保科技股份有限公司 | Device for recovering and improving sludge activity in biochemical treatment of high-salinity wastewater and using method |
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