CN110386665B - Biochemical treatment system for sediment residual water treatment equipment - Google Patents
Biochemical treatment system for sediment residual water treatment equipment Download PDFInfo
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- CN110386665B CN110386665B CN201910616180.9A CN201910616180A CN110386665B CN 110386665 B CN110386665 B CN 110386665B CN 201910616180 A CN201910616180 A CN 201910616180A CN 110386665 B CN110386665 B CN 110386665B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 239000013049 sediment Substances 0.000 title claims abstract description 29
- 238000005273 aeration Methods 0.000 claims abstract description 33
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 14
- 238000011001 backwashing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 30
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 14
- 239000011574 phosphorus Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 230000035484 reaction time Effects 0.000 abstract description 9
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000003541 multi-stage reaction Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 29
- 241000894006 Bacteria Species 0.000 description 27
- 244000005700 microbiome Species 0.000 description 12
- 230000001546 nitrifying effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000010992 reflux Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 4
- IPQVRLSXWJPESU-UHFFFAOYSA-N [N].ON=O Chemical compound [N].ON=O IPQVRLSXWJPESU-UHFFFAOYSA-N 0.000 description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- VGPSUIRIPDYGFV-UHFFFAOYSA-N [N].O[N+]([O-])=O Chemical compound [N].O[N+]([O-])=O VGPSUIRIPDYGFV-UHFFFAOYSA-N 0.000 description 2
- 238000004176 ammonification Methods 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000009935 nitrosation Effects 0.000 description 2
- 238000007034 nitrosation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- -1 nitrate ions Chemical class 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a biochemical treatment system for bottom sludge residual water treatment equipment, which comprises an anaerobic unit and an aerobic unit, wherein the anaerobic unit comprises a plurality of anaerobic tanks which are sequentially communicated, the aerobic unit comprises a plurality of aerobic tanks which are sequentially communicated, and the anaerobic tank at the tail end of the anaerobic unit is communicated with the aerobic tank at the head end of the aerobic unit; anaerobic filler is arranged in the anaerobic tank, aerobic filler is arranged in the aerobic tank, and aeration devices are arranged in the anaerobic tank and the aerobic tank. The biochemical treatment system for the sediment residual water treatment equipment provided by the invention prolongs the anaerobic reaction time and the aerobic reaction time through a multistage reaction mechanism, can effectively remove total nitrogen, ammonia nitrogen and total phosphorus, and can not bring new secondary pollution due to the total nitrogen and the ammonia nitrogen in the discharge process.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a biochemical treatment system for sediment residual water treatment equipment.
Background
The river channel environment-friendly dredging is a novel industry developed in recent 30 years, and is an engineering technology of crossing hydraulic engineering, environmental engineering and dredging engineering. Since this century, many different scales of dredging projects are being implemented or started in our country. According to domestic and foreign sewage treatment experience, under the condition that the exogenous pollution of the water body is controlled, the endogenous pollution, namely the polluted sediment, must be thoroughly removed, and the ecological system of the water body is rebuilt, so that the river channel treatment can achieve the ideal effect, and the river channel environmental protection dredging is widely considered as one of important measures for removing the endogenous pollution in the water environment treatment process. However, with the implementation of environmental-friendly dredging engineering, a large amount of dredging residual water is generated and is often discharged into nearby receiving water bodies without being effectively treated. Because the dredging residual water contains high-concentration suspended matters, nitrogen, phosphorus, organic matters and other pollutants, the high-concentration suspended matters, the nitrogen, the phosphorus, the organic matters and the like are directly discharged into the receiving water body, so that serious ecological environment pollution is caused. Therefore, in consideration of the reconstruction of the aquatic ecosystem of the dredging area, secondary pollution is prevented, and the sediment residual water after dredging must be treated to be discharged.
The existing dredging sediment residual water treatment mostly adopts a flocculation purification mode, has long residence time and large occupied area, can only remove suspended solids, organic pollutants and total phosphorus, has poor ammonia nitrogen and total nitrogen removal effect, and brings new secondary pollution after being discharged into a water body.
Disclosure of Invention
The invention aims to provide a biochemical treatment system for sediment residual water treatment equipment, which aims to solve the technical problems of poor ammonia nitrogen and total nitrogen removal effect and new secondary pollution after being discharged into a water body in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: provided is a biochemical treatment system for a sludge residual water treatment apparatus, including: the device comprises an anaerobic unit and an aerobic unit, wherein the anaerobic unit comprises a plurality of anaerobic tanks which are communicated in sequence, the aerobic unit comprises a plurality of aerobic tanks which are communicated in sequence, and the anaerobic tank at the tail end of the anaerobic unit is communicated with the aerobic tank at the head end of the aerobic unit; ; anaerobic filler is arranged in the anaerobic tank, aerobic filler is arranged in the aerobic tank, and aeration devices are arranged in the anaerobic tank and the aerobic tank.
In one embodiment, the aerobic tank at the tail end and the anaerobic tank at the head end are also communicated through a reflux pipeline, and a reflux pump is arranged on the reflux pipeline.
In one embodiment, a plurality of anaerobic tanks and a plurality of aerobic tanks are integrally arranged, and partition plates are respectively arranged between adjacent anaerobic tanks, between adjacent aerobic tanks and between the anaerobic tanks.
In one embodiment, the biochemical treatment system for the sediment residual water treatment device further comprises a clean water tank, wherein the clean water tank is communicated with the aerobic tank at the tail end; the clean water tank and the aerobic tank are integrally arranged, and a partition plate is arranged between the clean water tank and the aerobic tank.
In one embodiment, the baffle is provided with overflow ports, the height of the overflow ports is reduced in sequence along the flow direction of the residual water, and the height of the overflow ports is lower than the height of the liquid inlet of the anaerobic tank at the head end.
In one embodiment, the overflow port is provided with an overflow cofferdam which is opened upwards at the side of the residual water, and a downward extending flow guide pipe is arranged at the side of the overflow port, which is positioned at the downstream side of the residual water.
In one embodiment, the aerobic tank and the anaerobic tank are respectively provided with a pH detection device and a DO detection device, and the clear water tank is also provided with an ammonia nitrogen concentration detection device.
In one embodiment, the bottoms of the anaerobic tank and the aerobic tank are provided with backwash ports, and the backwash ports are communicated with a water source through backwash pipelines and backwash pumps; the bottom of the anaerobic tank and the bottom of the aerobic tank are also provided with a sewage outlet, the height of the sewage outlet is lower than that of the backwash outlet, and the sewage outlet is connected with a sewage pipeline.
In one embodiment, the upper parts of the anaerobic tank and the aerobic tank are respectively provided with a medicine adding port; the biochemical treatment system for the sediment residual water treatment equipment further comprises a carbon source replenishing device which is respectively connected with each dosing port.
In one embodiment, the aeration device comprises aeration annular pipes arranged at the bottoms of the anaerobic tank and the aerobic tank respectively, a plurality of disc-type aeration heads arranged on the aeration annular pipes respectively and a fan communicated with the aeration annular pipes.
The biochemical treatment system for the sediment residual water treatment equipment has the beneficial effects that: compared with the prior art, the biochemical treatment system for the sediment residual water treatment equipment sequentially carries out multistage anaerobic treatment and then multistage aerobic treatment, before the anaerobic treatment process, the aeration device is used for carrying out stuffy aeration (the aeration quantity is about 7m 3/h), so that microorganisms (such as denitrifying bacteria) on anaerobic fillers and microorganisms (such as aerobic nitrifying bacteria) on aerobic fillers are rapidly proliferated under proper conditions, dominant bacteria in the reactor grow to the maximum logarithmic phase, namely the quantity, and then slow water inflow is started until the design load is achieved; anaerobic microorganisms comprise denitrifying bacteria, dephosphorizing bacteria and the like, wherein the denitrifying bacteria reduce nitrogen nitrate and nitrogen nitrite into gaseous nitrogen N 2\N2 O/NO in an anoxic environment so as to remove total nitrogen in residual water, and meanwhile, the dephosphorizing bacteria release a large amount of phosphorus in an anaerobic state; the aerobic microorganisms comprise ammonia oxidizing bacteria, nitrifying bacteria and the like, the ammonia oxidizing bacteria enable organic nitrides to undergo ammonification reaction to be converted into ammonia nitrogen, the ammonia nitrogen undergoes nitrifying reaction under the action of nitrifying bacteria and is further decomposed, nitrosation is firstly carried out under the action of nitrosating bacteria, the ammonia nitrogen is converted into nitrous acid nitrogen, then the nitrifying bacteria convert the nitrous acid nitrogen into nitric acid nitrogen, ammonia nitrogen is removed, and meanwhile, phosphorus is absorbed by phosphorus removing bacteria in a large quantity under the aerobic state, so that the phosphorus removing effect is finally achieved. Therefore, the biochemical treatment system for the sediment residual water treatment equipment provided by the invention prolongs the anaerobic reaction time and the aerobic reaction time through a multistage reaction mechanism, can effectively remove total nitrogen, ammonia nitrogen and total phosphorus, and can not bring new secondary pollution due to the total nitrogen and the ammonia nitrogen in the discharge process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the internal structure of a biochemical treatment system for a sludge residual water treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the internal structure of FIG. 1;
FIG. 3 is a schematic view of the left-hand internal structure of FIG. 1;
FIG. 4 is a schematic view of the internal structure of a nozzle according to an embodiment of the present invention;
Fig. 5 is an enlarged view of a portion a of fig. 4.
Wherein, each reference sign in the figure:
1-an anaerobic tank; 2-an aerobic tank; 3-a return line; 4-a reflux pump; 5-a separator; 6-a clean water tank; 7-overflow port; 8-overflow cofferdam; 9-a flow guiding pipe; 10-backwashing the pipeline; 11-a carbon source replenishing device; 12-a sewage pipeline; 13-a medicine adding port; 14-an aeration loop; 15-disc type aeration heads; 16-fans; 17-a box body; 18-spraying pipe; 19-pressurizing nozzle; 20-a baffle; 21-elastic rope
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, a biochemical treatment system for a sludge residual water treatment apparatus according to the present invention will now be described. The biochemical treatment system for the sediment residual water treatment equipment comprises an anaerobic unit and an aerobic unit, wherein the anaerobic unit comprises a plurality of anaerobic tanks 1 which are sequentially communicated, the aerobic unit comprises a plurality of aerobic tanks 2 which are sequentially communicated, and the anaerobic tank 1 at the tail end of the anaerobic unit is communicated with the aerobic tank 2 at the head end of the aerobic unit; anaerobic filler is arranged in the anaerobic tank 1, aerobic filler is arranged in the aerobic tank 2, and aeration devices are arranged in the anaerobic tank 1 and the aerobic tank 2.
Compared with the prior art, the biochemical treatment system for the sediment residual water treatment equipment provided by the invention has the advantages that residual water is subjected to multistage anaerobic treatment in sequence and then subjected to multistage aerobic treatment, before the anaerobic treatment process, the aeration device is utilized to perform stuffy aeration (the aeration quantity is about 7m 3/h), so that microorganisms (such as denitrifying bacteria) on anaerobic fillers and microorganisms (such as aerobic nitrifying bacteria) on aerobic fillers are rapidly proliferated under proper conditions, and dominant bacteria in the reactor grow to the maximum logarithmic phase, namely the quantity, and then slow water inflow is started until the design load is achieved; anaerobic microorganisms comprise denitrifying bacteria, dephosphorizing bacteria and the like, wherein the denitrifying bacteria reduce nitrogen nitrate and nitrogen nitrite into gaseous nitrogen N 2\N2 O/NO in an anoxic environment so as to remove total nitrogen in residual water, and meanwhile, the dephosphorizing bacteria release a large amount of phosphorus in an anaerobic state; the aerobic microorganisms comprise ammonia oxidizing bacteria, nitrifying bacteria and the like, the ammonia oxidizing bacteria enable organic nitrides to undergo ammonification reaction to be converted into ammonia nitrogen, the ammonia nitrogen undergoes nitrifying reaction under the action of nitrifying bacteria and is further decomposed, nitrosation is firstly carried out under the action of nitrosating bacteria, the ammonia nitrogen is converted into nitrous acid nitrogen, then the nitrifying bacteria convert the nitrous acid nitrogen into nitric acid nitrogen, ammonia nitrogen is removed, and meanwhile, phosphorus is absorbed by phosphorus removing bacteria in a large quantity under the aerobic state, so that the phosphorus removing effect is finally achieved. Therefore, the biochemical treatment system for the sediment residual water treatment equipment prolongs the anaerobic reaction time and the aerobic reaction time through a multistage reaction mechanism, so that the anaerobic reaction and the aerobic reaction are more complete, the total nitrogen, ammonia nitrogen and total phosphorus can be effectively removed, and no new secondary pollution is caused by the total nitrogen and the ammonia nitrogen in the discharge process. The treated water can be discharged into the artificial wetland of a sediment treatment plant or irrigated and greening land, so that the water resource is fully utilized.
It should be noted that the aeration device not only increases the microorganism concentration before the reaction, but also provides enough oxygen in the reaction process to ensure that the aerobic treatment process can be smoothly carried out.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, both the aerobic filler and the anaerobic filler are polyurethane fillers. The immobilized carrier has various kinds, the ideal carrier material is critical to the application of immobilized microorganisms, and the polyurethane filler has good water permeability and elasticity, is favorable for the growth of microorganisms, and can generally adopt reticulated polyurethane foam plastic, polyurethane hydrogel biological carrier materials and the like. In addition, besides polyurethane filler, bamboo charcoal material, activated carbon fiber material, porous ceramic material, etc. can be used.
Referring to fig. 1, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, an aerobic tank 2 at a tail end and an anaerobic tank 1 at a head end are also communicated through a return pipeline 3, and a return pump 4 is disposed on the return pipeline 3. The reflux pump 4 can return the drainage of the tail end aerobic tank 2 to the head end anaerobic tank 1 to participate in circulation repeatedly so as to achieve the recycling of resources. The reflux pump 4 is used for refluxing the residual water treated by the tail-end aerobic tank 2 to the head-end anaerobic tank 1, so that nitrate nitrogen generated by the aerobic reaction is conveyed to the head-end anaerobic tank 1 and reduced to harmless N 2 through the action of denitrifying bacteria to be discharged, the nitrate nitrogen content in the residual water is reduced, and the total nitrogen (ammonia nitrogen, nitrate ions and the like) in the discharged water is reduced.
Referring to fig. 1 and 2, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, a plurality of anaerobic tanks 1 and a plurality of aerobic tanks 2 are integrally provided, and partition plates 5 are respectively provided between adjacent anaerobic tanks 1, between adjacent aerobic tanks 2, and between adjacent aerobic tanks 2 and anaerobic tanks 1. The design can effectively reduce the space occupied by the biochemical treatment system, simplify the structure of the biochemical treatment system and reduce the use cost.
Referring to fig. 1 and 2, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, the biochemical treatment system for a sludge residual water treatment apparatus further includes a clean water tank 6, where the clean water tank 6 is communicated with the aerobic tank 2 at the end; the clean water tank 6 and the aerobic tank 2 are integrally arranged, and a baffle plate 5 is also arranged between the clean water tank 6 and the aerobic tank 2. The clean water tank 6 has a stabilizing effect, can enable the discharged water after biochemical treatment to be stable and stand for a period of time, further enables particle impurities in the water to be precipitated, is beneficial to improving the quality of the final discharged water, provides a buffer space for detecting and adjusting the discharged water treatment, is convenient to control the quality of the discharged water, and can have a certain time to properly adjust the water treatment process when the fact that the discharged water of the tail-end aerobic tank 2 does not reach the standard is detected.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, the liquid inlet of the anaerobic tank 1 at the head end is also provided with a flowmeter and a regulating valve, the flowmeter is used for detecting residual water conveying flow, and the regulating valve is used for regulating residual water conveying flow. The setting value of the residual water treatment flow can be regulated according to the detected residual water treatment condition (namely residual water detection data), and the regulating valve is regulated according to the setting value to control the conveying flow.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, provided by the invention, the outer sides of the anaerobic tank 1, the aerobic tank 2 and the clean water tank 6 are also covered with the tank body 17, gaps are arranged between the outer walls of the anaerobic tank 1, the aerobic tank 2 and the clean water tank 6 and the inner walls of the tank body 17, and the gaps are used for accommodating parts which are required to be arranged on the outer sides of the anaerobic tank 1, the aerobic tank 2 and the clean water tank 6, so that the biochemical treatment system is simpler in appearance and convenient to manage and protect the equipment.
Referring to fig. 1, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment device provided by the invention, an overflow port 7 is arranged on a partition board 5, and the overflow port 7 is equivalent to a communication channel for circulating residual water between adjacent anaerobic tanks 1, between adjacent anaerobic tanks 1 and aerobic tanks 2, between adjacent aerobic tanks 2 and a clean water tank 6, so as to play a role in communicating two adjacent tanks. The height of the overflow port 7 is reduced along the flow direction of the residual water, and the height of the overflow port 7 is lower than the height of the liquid inlet of the anaerobic tank 1 at the head end. The overflow ports 7 are mainly used for conveying liquid into the downstream reaction tanks, and the height of the overflow ports 7 of each baffle plate 5 is sequentially reduced along the flow direction of the residual water, so that the liquid level of each stage of reaction tank from front to back is gradually reduced, the reaction time is gradually reduced, the flow rate of the residual water is slowed down, sufficient reaction time is provided for the anaerobic reaction section, the residual water of the aerobic reaction section is fully mixed with oxygen, and the reaction efficiency is improved.
Referring to fig. 1 and 2, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, an overflow cofferdam 8 with an upward opening is disposed at a side of the overflow port 7 located upstream of residual water, and a downward extending flow guide pipe 9 is disposed at a side of the overflow port 7 located downstream of residual water. The overflow cofferdam 8 can prevent downstream residual water from flowing backward and returning to the upstream, and avoid the interference of the front reaction tank and the rear reaction tank when sewage is treated. The flow guide pipe 9 guides sewage to flow from the overflow port 7 to the other side of the partition board 5 and to the bottom of the reaction tank, so that the sewage in the upstream reaction tank overflows and flows to the top through the bottom of the downstream reaction tank, and the residual water has enough retention reaction time in each reaction tank. Meanwhile, the overflow cofferdam 8 is matched with the guide pipe 9, so that the impact of sewage on the outlet of the guide pipe 9 can be slowed down, and the flushing of filler is reduced.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, the invention is provided with a pH detection device and a DO detection device in both the aerobic tank 2 and the anaerobic tank 1, and an ammonia nitrogen concentration detection device is also arranged in the clean water tank 6. The pH detection is convenient for controlling the pH of the residual water in real time, ensures the pH of the normal metabolism of microorganisms and ensures the treatment efficiency of ammonia nitrogen; DO can detect dissolved oxygen in each reaction cell, facilitating control of dissolved oxygen concentration in each reaction cell. The ammonia nitrogen concentration detection device is used for monitoring the ammonia nitrogen concentration in the discharged clean water in real time, so that the residual water treatment speed can be conveniently regulated and controlled, and whether the residual water treatment reaches the standard or not can be judged. When the ammonia nitrogen content in the residual water is detected to be too high, the aeration rate in the aerobic tank 2 can be increased, or the water inflow can be properly reduced.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, the pH detection device and the DO detection device are arranged on overflow cofferdams 8 of the anaerobic tank 1 and the aerobic tank 2, and the ammonia nitrogen concentration detection device is arranged on a diversion pipe 9 of the clean water tank 6, so that the detection result is more stable.
Referring to fig. 1 to 3, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, the bottoms of an anaerobic tank 1 and an aerobic tank 2 are provided with backwash ports, and the backwash ports are communicated with a water source through a backwash pipeline 10 and a backwash pump; the bottoms of the anaerobic tank 1 and the aerobic tank 2 are also provided with a sewage outlet, the height of the sewage outlet is lower than that of the backwash outlet, and the sewage outlet is connected with a sewage pipeline 12. Wherein, the backwash pipe 10 and the sewage pipe 12 are respectively provided with valves corresponding to backwash ports and sewage outlets one by one so as to control water inlet and water outlet. A flowmeter may also be provided on the backwash pipe 10 to control the flow rate and volume of water used during flushing.
As a specific embodiment of the biochemical treatment system for the sediment residual water treatment equipment provided by the invention, the liquid outlet of the clean water tank 6 can be connected with a backwashing pipeline 10 to be used as a water source for flushing the reaction tank.
Referring to fig. 1 to 3, as a specific embodiment of a biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, upper parts of an anaerobic tank 1 and an aerobic tank 2 are respectively provided with a chemical adding port 13; the biochemical treatment system for the sediment residual water treatment equipment also comprises a carbon source replenishing device 11 which is respectively connected with each dosing port 13. Through carbon source replenishing device 11, can increase organic carbon source in each reaction tank according to actual conditions, as the nutrient substance of denitrifying bacteria, guarantee the quantity of denitrifying bacteria, and then guarantee anaerobic treatment efficiency. The necessary auxiliary reaction substances can be added into each reaction tank through the chemical adding ports 13 arranged on the other reaction tanks according to actual conditions. In addition, the specific cleaning medicines can be put into each reaction tank through the medicine adding port 13 in the backwashing process, so that the cleaning efficiency is improved.
Referring to fig. 1 to 3, as a specific embodiment of the biochemical treatment system for a sludge residual water treatment apparatus provided by the present invention, an aeration device includes an aeration loop 14 respectively disposed at the bottoms of an anaerobic tank 1 and an aerobic tank 2, a plurality of disk aeration heads 15 respectively disposed on the aeration loop 14, and a fan 16 communicating with the aeration loop 14. The disc type aeration head 15 is in a shower shape, and can disperse gas during aeration to prevent microbial films from separating from the filler; the aeration loop 14 is capable of providing sufficient aeration for each reaction tank.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, the inner side of the backwashing port is provided with a pressurizing injection structure, the pressurizing injection structure is a spray pipe 18 which is provided with a plurality of pressurizing spray nozzles 19 and extends towards the inner side of the backwashing port, the free end of the pressurizing spray pipe 18 is closed, each pressurizing spray nozzle 19 is arranged towards the bottom of the pond, and the plurality of pressurizing spray nozzles 19 are arranged along the long axis of the spray pipe 18. The spray pipe 18 extends inwards, so that the water spraying range of the pressurizing spray nozzle 19 can cover most of the area of the tank bottom, and the effect of thoroughly cleaning the tank bottom can be achieved by matching the flowing effect of water flow on the tank bottom.
As a specific implementation mode of the biochemical treatment system for the sediment residual water treatment equipment, provided by the invention, the outer side of each pressurizing nozzle 19 is provided with the baffle plate 20 for blocking the pressurizing nozzle 19, the area of the baffle plate 20 is larger than that of the pressurizing nozzle 19, the baffle plate 20 is hinged with the spray pipe 18, and the inner side of the baffle plate 20 is connected with the inner wall of the spray pipe 18 through the elastic rope 21 penetrating through the pressurizing nozzle 19. When water flows from the inner side of the spray pipe 18 to the pressurizing nozzle 19 and reaches a certain pressure, the water pushes the baffle plate 20 open, so that the water can be sprayed out from the pressurizing nozzle 19; when no water flows in the spray pipe 18 and sewage exists in the pool, the baffle 20 keeps the state of blocking the pressurizing nozzle 19, so that the pressurizing nozzle 19 is prevented from being blocked by pollutants, and the difficulty of subsequent cleaning is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A biochemical treatment system for sediment surplus water treatment facilities, its characterized in that: the device comprises an anaerobic unit and an aerobic unit, wherein the anaerobic unit comprises a plurality of anaerobic tanks which are communicated in sequence, the aerobic unit comprises a plurality of aerobic tanks which are communicated in sequence, and the anaerobic tank at the tail end of the anaerobic unit is communicated with the aerobic tank at the head end of the aerobic unit; anaerobic filler is arranged in the anaerobic tank, aerobic filler is arranged in the aerobic tank, and aeration devices are arranged in the anaerobic tank and the aerobic tank;
the bottoms of the anaerobic tank and the aerobic tank are provided with backwash ports which are communicated with a water source through backwash pipelines and backwash pumps; the bottoms of the anaerobic tank and the aerobic tank are also provided with a sewage outlet, the height of the sewage outlet is lower than that of the backwash port, and the sewage outlet is connected with a sewage pipeline;
The inner side of the backwashing port is provided with a pressurized jet structure, the pressurized jet structure is a jet pipe which is provided with a plurality of pressurized jet ports and extends towards the inner side of the backwashing port, the free end of the jet pipe is closed, each pressurized jet port is arranged towards the bottom of the tank, and a plurality of pressurized jet ports are arranged along the long axis of the jet pipe;
the outer side of each pressurizing nozzle is provided with a baffle plate for blocking the pressurizing nozzle, the area of the baffle plate is larger than that of the pressurizing nozzle, the baffle plates are hinged with the spray pipe, and the inner side of each baffle plate is connected with the inner wall of the spray pipe through an elastic rope penetrating through the pressurizing nozzle;
The anaerobic tanks and the aerobic tanks are integrally arranged, and partition plates are respectively arranged between the adjacent anaerobic tanks, between the adjacent aerobic tanks and the anaerobic tanks;
the baffle is provided with overflow ports, the height of the overflow ports is reduced along the flow direction of the residual water, and the height of the overflow ports is lower than the height of the liquid inlet of the anaerobic tank at the head end.
2. The biochemical treatment system for a sludge residual water treatment facility according to claim 1, wherein: the aerobic tank at the tail end is communicated with the anaerobic tank at the head end through a return pipeline, and a return pump is arranged on the return pipeline.
3. The biochemical treatment system for a sludge residual water treatment facility according to claim 1, wherein: the biochemical treatment system for the sediment residual water treatment equipment further comprises a clean water tank, wherein the clean water tank is communicated with the aerobic tank at the tail end; the clean water tank and the aerobic tank are integrally arranged, and a partition plate is arranged between the clean water tank and the aerobic tank.
4. The biochemical treatment system for a sludge residual water treatment facility according to claim 1, wherein: the overflow cofferdam with an upward opening is arranged on one side of the overflow port, which is positioned on the upstream side of the residual water flow, and the diversion pipe which extends downwards is arranged on one side of the overflow port, which is positioned on the downstream side of the residual water flow.
5. A biochemical treatment system for a sludge residual water treatment facility as claimed in claim 3, wherein: the aerobic tank and the anaerobic tank are internally provided with a pH detection device and a DO detection device, and the clear water tank is internally provided with an ammonia nitrogen concentration detection device.
6. The biochemical treatment system for a sludge residual water treatment facility according to claim 1, wherein: the upper parts of the anaerobic tank and the aerobic tank are respectively provided with a medicine adding port; the biochemical treatment system for the sediment residual water treatment equipment further comprises a carbon source replenishing device which is respectively connected with each dosing port.
7. The biochemical treatment system for a sludge residual water treatment facility according to claim 1, wherein: the aeration device comprises aeration annular pipes arranged at the bottoms of the anaerobic tank and the aerobic tank respectively, a plurality of disc-type aeration heads arranged on the aeration annular pipes respectively and a fan communicated with the aeration annular pipes.
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