CN115108635B - Adopt solar drive's two-stage moving bed biomembrane improvement septic tank - Google Patents
Adopt solar drive's two-stage moving bed biomembrane improvement septic tank Download PDFInfo
- Publication number
- CN115108635B CN115108635B CN202210669852.4A CN202210669852A CN115108635B CN 115108635 B CN115108635 B CN 115108635B CN 202210669852 A CN202210669852 A CN 202210669852A CN 115108635 B CN115108635 B CN 115108635B
- Authority
- CN
- China
- Prior art keywords
- chamber
- aerobic
- anoxic
- stage
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000005273 aeration Methods 0.000 claims abstract description 67
- 238000003756 stirring Methods 0.000 claims abstract description 44
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 238000011282 treatment Methods 0.000 claims abstract description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 239000010865 sewage Substances 0.000 claims description 46
- 230000002550 fecal effect Effects 0.000 claims description 24
- 238000004062 sedimentation Methods 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000010992 reflux Methods 0.000 description 5
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 244000000010 microbial pathogen Species 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 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
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
-
- 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
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)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a solar-driven two-stage moving bed biological film modified septic tank, which comprises a two-stage anoxic and aerobic moving bed biological film system and a solar driving system, wherein the two-stage anoxic and aerobic moving bed biological film system comprises a water inlet chamber, a settling chamber, a primary anoxic chamber, a primary aerobic chamber, a secondary anoxic chamber, a secondary aerobic chamber and a water discharge chamber which are sequentially arranged and communicated; the solar driving system comprises a photovoltaic panel and a photovoltaic inverter, wherein the photovoltaic panel absorbs solar energy to be converted into electric energy, and the photovoltaic inverter is converted into alternating current with the mains frequency to drive a stirring device and an aeration device of the two-stage anoxic and aerobic moving bed biological film system. The anaerobic-aerobic moving bed biological membrane technology is adopted in the integrated septic tank, so that the removal of pollutants, nitrogen and phosphorus and the minimization of the sludge yield are realized at the same time; the solar driving system completely provides energy for the biological treatment system, is beneficial to being used in alpine regions and regions with insufficient electric power transportation, and reduces the running cost.
Description
Technical Field
The invention relates to the technical field, in particular to a two-stage moving bed biological membrane improved septic tank driven by solar energy.
Background
The septic tank is used as the primary treatment system of fecal sewage, belongs to a low-speed anaerobic digestion tank, mainly separates the precipitable substances and suspended solids in the tank, and has a certain organic matter degradation effect and pathogenic microorganism removal effect. However, with increasingly strict sewage discharge standards, the requirements for fecal sewage treatment are gradually increased, and particularly, in places with recycling requirements after in-situ treatment, the fecal sewage containing high-concentration organic matters needs to be treated timely and efficiently. The common septic tank is single-chamber or double-chamber, has single function, low water quality and very limited treatment capacity, so that the traditional septic tank needs to be improved and upgraded, the functionality of the traditional septic tank is improved, organic pollutants and pathogenic microorganisms are effectively removed, and the water quality of the water is improved.
Moving bed biofilm process (MBBR) is a new compact biological sewage treatment process based on traditional activated sludge technology and trickling filters, in which biofilm grows on suspended packing in a reactor, these carriers are kept in continuous motion by aeration, and are stirred and rotated under mechanical stirring or fluid dynamic action of liquid jet. The biological carrier is used as a component of a biological treatment system, provides a high specific surface area for microorganism attachment and growth, is highly durable, has low cost, and can be used for many years. Thus, MBBR is small in size and free of sludge bulking compared to conventional activated sludge technology, and also provides flexibility in treatment schemes that can be easily modified and upgraded from existing facilities. The single-stage MBBR has the capability of being subjected to load impact to be improved, and particularly has the effect of treating fecal sewage with large rural water quality and water quantity fluctuation. In addition, when the device is used, part of power is still needed for aeration and stirring, and the power consumption not only wastes energy, but also increases the use cost, and the device has no advantages in rural areas with underdeveloped economy and inconvenient power transportation.
Disclosure of Invention
The embodiment of the invention provides a two-stage moving bed biological film improved septic tank driven by solar energy, the improved septic tank can effectively remove organic pollutants and pathogenic microorganisms in fecal sewage without electric drive, and the effluent quality is good and meets the recycling standard.
In order to achieve the aim of the invention, the invention provides a two-stage moving bed biological membrane modified septic tank driven by solar energy, which comprises a two-stage anoxic and aerobic moving bed biological membrane system and a solar energy driving system,
The two-stage anoxic and aerobic moving bed biological film system comprises a water inlet chamber, a settling chamber, a primary anoxic chamber, a primary aerobic chamber, a secondary anoxic chamber, a secondary aerobic chamber and a water discharge chamber which are sequentially arranged and communicated, wherein the primary anoxic chamber and the primary aerobic chamber form the primary anoxic and aerobic moving bed biological film system, the secondary anoxic chamber and the secondary aerobic chamber form the secondary anoxic and aerobic moving bed biological film system, the water inlet chamber is provided with a water inlet, the water discharge chamber is provided with a water outlet, and the bottom of the water discharge chamber is provided with a sludge collection port;
The first stirring device arranged at the top is arranged in the primary anoxic chamber, the first micro-aeration device for uniform aeration is arranged at the bottom of the primary aerobic chamber, and suspended filler is uniformly dispersed in the primary aerobic chamber; the secondary anoxic chamber is internally provided with a second stirring device arranged at the top, the bottom of the secondary aerobic chamber is provided with a second micro-aeration device for uniform aeration, and suspended filler is uniformly dispersed in the secondary aerobic chamber;
The solar driving system comprises a photovoltaic panel and a photovoltaic inverter, wherein the first stirring device, the first micro-aeration device, the second stirring device and the second micro-aeration device are respectively and electrically connected with the photovoltaic inverter, the photovoltaic panel absorbs solar energy and converts the solar energy into electric energy, and the photovoltaic inverter converts the solar energy into alternating current with the mains frequency to drive the first stirring device, the first micro-aeration device, the second stirring device and the second micro-aeration device.
Optionally, the drainage chamber is provided with a sewage return port, and part of liquid in the drainage chamber flows back to the primary anoxic chamber through the sewage return port. Further optionally, the drain chamber has a reflux ratio of 150%.
The moving bed biological film system comprises a main body box body, a water inlet chamber, a sedimentation chamber, a primary anoxic chamber, a primary aerobic chamber, a secondary anoxic chamber, a secondary aerobic chamber and a water discharge chamber are all arranged in the main body box body,
The water inlet chamber is separated from the sedimentation chamber by a first baffle, and a water port which is communicated with the water inlet chamber and the sedimentation chamber is arranged in the middle part or the upper part of the first baffle;
the sedimentation chamber is separated from the primary anoxic chamber by a second partition board, and the middle part or the upper part of the second partition board is provided with a water port for communicating the sedimentation chamber with the primary anoxic chamber;
The first-stage aerobic chamber and the first-stage anoxic chamber are separated by a third baffle plate and a first guide plate, the third baffle plate is arranged at one side of the bottom of the main body box body, which is close to the first-stage aerobic chamber, the upper edge of the third baffle plate is positioned at the middle part or the upper part of the first-stage aerobic chamber, the first guide plate is arranged at one side of the top of the main body box body, which is close to the first-stage anoxic chamber, the lower edge of the first guide plate is positioned below the upper edge of the third baffle plate, and a flow channel for communicating the first-stage aerobic chamber and the first-stage anoxic chamber is formed between the third baffle plate and the first guide plate;
The first-stage anoxic chamber and the second-stage aerobic chamber are separated by a fourth baffle plate and a second baffle plate, the fourth baffle plate is arranged at one side of the bottom of the main body box body, which is close to the first-stage anoxic chamber, the upper edge of the fourth baffle plate is positioned at the middle part or the upper part of the first-stage anoxic chamber, the second baffle plate is arranged at one side of the top of the main body box body, which is close to the second-stage aerobic chamber, the lower edge of the second baffle plate is positioned below the upper edge of the fourth baffle plate, and a flow channel for communicating the first-stage anoxic chamber and the second-stage aerobic chamber is formed between the fourth baffle plate and the second baffle plate;
The second-stage aerobic chamber and the second-stage anoxic chamber are separated by a fifth baffle plate and a third baffle plate, the fifth baffle plate is arranged at one side of the bottom of the main body box body, which is close to the second-stage aerobic chamber, the upper edge of the fifth baffle plate is positioned at the middle part or the upper part of the second-stage aerobic chamber, the third baffle plate is arranged at one side of the top of the main body box body, which is close to the second-stage anoxic chamber, the lower edge of the third baffle plate is positioned below the upper edge of the fifth baffle plate, and a flow channel for communicating the second-stage aerobic chamber and the second-stage anoxic chamber is formed between the fifth baffle plate and the third baffle plate;
The secondary anoxic chamber is separated from the sixth partition plate of the water draining chamber, and the middle part or the upper part of the sixth partition plate is provided with a water port for communicating the secondary anoxic chamber with the water draining chamber.
Preferably, the lower end of the first guide plate is an inclined plate inclined to one side of the primary anoxic chamber.
Preferably, the lower end of the second guide plate is an inclined plate inclined to one side of the secondary aerobic chamber.
Preferably, the lower end of the third guide plate is an inclined plate inclined to one side of the secondary anoxic chamber.
Further alternatively, the suspension filler in the primary aerobic chamber and the secondary aerobic chamber is modified polyurethane sponge filler, the size is 30 multiplied by 30mm, the porosity is 95%, the specific surface area is 4000m 2/m3, the filling rate is 30%, and the dissolved oxygen is 2-4mg/L.
Further alternatively, the first micro-aeration device and the second micro-aeration device in the first-stage aerobic chamber and the second-stage aerobic chamber are micro-pore aeration discs, and the time is 10 hours of running and the time is 2 hours of intermittent running. The dissolved oxygen concentration of the anoxic tank is below 0.5 mg/L.
Further optionally, the first stirring device and the second stirring device both adopt an intermittent rotation mode, the intermittent time is 1 hour, and the rotation time is 8 hours.
Further optionally, the solar ac power generation system is composed of a photovoltaic panel, a charging controller, an inverter and a storage battery, wherein the area of the photovoltaic panel is 2m 2, and the irradiation ratio is as follows: 1000W/m 2.
Further alternatively, the phosphorus-containing sludge in the drain chamber is collected periodically, with a collection period of once every three months.
The water treatment method of the two-stage moving bed biological membrane modified septic tank driven by solar energy comprises the following steps:
S1, the discharged fecal sewage is pumped into a water inlet chamber, the water quantity is regulated by the water inlet chamber, then flows into a precipitation chamber, and enters a two-stage anoxic and aerobic moving bed biomembrane system after preliminary sedimentation is completed under the action of gravity;
S2, the fecal sewage firstly enters a precipitation chamber for solid-liquid separation, and the hydraulic retention time is 25h; then entering a primary anoxic chamber for anaerobic fermentation, maintaining facultative anaerobic anoxic conditions, and completely mixing under the stirring of a first stirring device; the mixed solution after complete mixing enters a primary aerobic chamber, suspended filler is used as a biological carrier, the biological carrier orderly moves in a tank under the action of a first micro-aeration device at the bottom, a biological film gradually grows on the surface of the suspended filler to form a moving bed biological film, and the aeration time of the first micro-aeration device is controlled by adopting a time controller; the treated sewage then enters a secondary anoxic chamber to be continuously stirred; continuously entering the next secondary aerobic tank under the action of water power, and adopting the same aeration rate and aeration time with the primary aerobic tank; finally, the sewage enters a water draining chamber, and part of sewage in the water draining chamber flows back to the first-stage anoxic chamber;
S3, the external photovoltaic panel absorbs solar energy, and the variable direct current voltage generated by the photovoltaic solar panel is converted into alternating current with the mains frequency through the photovoltaic inverter, so that power is provided for the first stirring device, the first micro-aeration device, the second stirring device and the second micro-aeration device;
s4, collecting the phosphorus-containing sludge in the drainage chamber through a sludge collecting port, and discharging supernatant through a drainage port.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the invention adopts the anoxic-aerobic moving bed biological film technology in the integrated septic tank, and simultaneously realizes the removal of pollutants, nitrogen and phosphorus and the minimization of sludge yield. The sewage is firstly subjected to solid-liquid separation and preliminary anaerobic digestion under the anaerobic condition of a settling chamber, and then partial anaerobic degradation of organic pollutants and denitrification nitrogen removal occur in an anoxic chamber. The moving biological carriers suspended in the aerobic chamber extend the solids residence time and reduce the sludge yield. The microorganisms attached to the biological carrier are subjected to nitrification under the aerobic condition, and then the accumulated nitrite and nitrate can be partially denitrified due to the micro anoxic zone in the biological carrier, so that synchronous nitrification and denitrification are realized, competition with other fast-growing heterotrophic bacteria is avoided, and the denitrification efficiency is greatly improved. Biological phosphorus removal is achieved by periodic mud removal.
The two-stage AO improves the overall process performance, so that the improved septic tank can operate under high load, and can quickly recover when impacted by load in areas with unstable water quality and water quantity. In addition, the intermittent stirring and intermittent aeration modes reduce the falling of the biological film caused by flushing, are beneficial to the increment of microorganisms and the secretion of extracellular polymers, increase the thickness of the biological film and the population of the microorganisms, are beneficial to strengthening the continuous degradation effect of pollutants of the microorganisms under adverse conditions, and reduce part of energy consumption. The invented treatment system has the advantages of easy operation, space saving and reduced maintenance and energy requirements.
The solar driving system completely provides energy for the biological treatment system, does not need to additionally increase electric energy, is beneficial to being used in alpine regions and regions with insufficient electric power transportation, and reduces the running cost.
The invention has high degradation efficiency and denitrification and dephosphorization efficiency on fecal sewage, obviously improves the effluent quality to reach the recycling standard, and realizes the in-situ high-efficiency energy-saving treatment of fecal sewage.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention provides a two-stage moving bed biological membrane modified septic tank driven by solar energy, which comprises a two-stage anoxic and aerobic moving bed biological membrane system and a solar energy driving system,
The two-stage anoxic and aerobic moving bed biological film system comprises a water inlet chamber 1, a sedimentation chamber 2, a primary anoxic chamber 3, a primary aerobic chamber 5, a secondary anoxic chamber 6, a secondary aerobic chamber 8 and a drainage chamber 9 which are sequentially arranged and communicated, wherein the primary anoxic chamber 3 and the primary aerobic chamber 5 form the primary anoxic and aerobic moving bed biological film system, the secondary anoxic chamber 6 and the secondary aerobic chamber 8 form the secondary anoxic and aerobic moving bed biological film system, the water inlet chamber 1 is provided with a water inlet, the drainage chamber 9 is provided with a water outlet, and the bottom of the drainage chamber 9 is provided with a sludge collection port 15;
A first stirring device 4 arranged at the top is arranged in the primary anoxic chamber 3, a first micro-aeration device 11 for uniform aeration is arranged at the bottom of the primary aerobic chamber 5, and suspended filler 10 is uniformly dispersed in the primary aerobic chamber 5; a second stirring device 7 arranged at the top is arranged in the secondary anoxic chamber 6, a second micro-aeration device 13 for uniform aeration is arranged at the bottom of the secondary aerobic chamber 8, and suspended filler 12 is uniformly dispersed in the secondary aerobic chamber 8;
the solar driving system comprises a photovoltaic panel 16 and a photovoltaic inverter 17, wherein the first stirring device 4, the first micro-aeration device 11, the second stirring device 7 and the second micro-aeration device 13 are respectively and electrically connected with the photovoltaic inverter 17, the photovoltaic panel 16 absorbs solar energy and converts the solar energy into electric energy, and the photovoltaic inverter 17 converts the electric energy into mains frequency alternating current to drive the first stirring device 4, the first micro-aeration device 11, the second stirring device 7 and the second micro-aeration device 13.
Optionally, the drainage chamber 9 is provided with a sewage return port, and part of liquid in the drainage chamber 9 flows back to the primary anoxic chamber 3 through the sewage return port. Further alternatively, the drain chamber 9 has a reflux ratio of 150%.
The moving bed biological film system comprises a main body box body, a water inlet chamber 1, a sedimentation chamber 2, a primary anoxic chamber 3, a primary aerobic chamber 5, a secondary anoxic chamber 6, a secondary aerobic chamber 8 and a drainage chamber 9 are all arranged in the main body box body,
The water inlet chamber 1 and the sedimentation chamber 2 are separated by a first baffle, and the middle part or the upper part of the first baffle is provided with a water port which is communicated with the water inlet chamber 1 and the sedimentation chamber 2;
the sedimentation chamber 2 and the primary anoxic chamber 3 are separated by a second partition board, and the middle part or the upper part of the second partition board is provided with a water port for communicating the sedimentation chamber 2 and the primary anoxic chamber 3;
the first-stage aerobic chamber 5 and the first-stage anoxic chamber 3 are separated by a third baffle and a first guide plate, the third baffle is arranged at one side of the bottom of the main body box body close to the first-stage aerobic chamber 5, the upper edge of the third baffle is positioned at the middle part or the upper part of the first-stage aerobic chamber 5, the first guide plate is arranged at one side of the top of the main body box body close to the first-stage anoxic chamber 3, the lower edge of the first guide plate is positioned below the upper edge of the third baffle, and a flow channel for communicating the first-stage aerobic chamber 5 and the first-stage anoxic chamber 3 is formed between the third baffle and the first guide plate;
the first-stage anoxic chamber 3 and the second-stage aerobic chamber 8 are separated by a fourth baffle and a second guide plate, the fourth baffle is arranged at one side of the bottom of the main body box body close to the first-stage anoxic chamber 3, the upper edge of the fourth baffle is positioned at the middle part or the upper part of the first-stage anoxic chamber 3, the second guide plate is arranged at one side of the top of the main body box body close to the second-stage aerobic chamber 8, the lower edge of the second guide plate is positioned below the upper edge of the fourth baffle, and a flow channel for communicating the first-stage anoxic chamber 3 and the second-stage aerobic chamber 8 is formed between the fourth baffle and the second guide plate;
The secondary aerobic chamber 8 and the secondary anoxic chamber 6 are separated by a fifth baffle and a third baffle, the fifth baffle is arranged at one side of the bottom of the main body box body close to the secondary aerobic chamber 8, the upper edge of the fifth baffle is positioned at the middle part or the upper part of the secondary aerobic chamber 8, the third baffle is arranged at one side of the top of the main body box body close to the secondary anoxic chamber 6, the lower edge of the third baffle is positioned below the upper edge of the fifth baffle, and a flow channel for communicating the secondary aerobic chamber 8 and the secondary anoxic chamber 6 is formed between the fifth baffle and the third baffle;
The secondary anoxic chamber 6 is separated from the sixth partition board of the drainage chamber 9, and the middle part or the upper part of the sixth partition board is provided with a water port for communicating the secondary anoxic chamber 6 with the drainage chamber 9.
Preferably, the lower end of the first guide plate is an inclined plate inclined to one side of the primary anoxic chamber 3.
Preferably, the lower end of the second deflector is an inclined plate inclined to one side of the secondary aerobic chamber 8.
Preferably, the lower end of the third deflector is an inclined plate inclined to one side of the secondary anoxic chamber 6.
Further alternatively, the suspension filler in the primary aerobic chamber 5 and the secondary aerobic chamber 8 are both modified polyurethane sponge filler, the size is 30 multiplied by 30mm, the porosity is 95%, the specific surface area is 4000m 2/m3, the filling rate is 30%, and the dissolved oxygen is 2-4mg/L.
Further alternatively, the first micro-aeration device and the second micro-aeration device in the first-stage aerobic chamber 5 and the second-stage aerobic chamber 8 are micro-pore aeration discs, and the micro-pore aeration discs are connected with an aeration pump 18 for 10 hours and are intermittently operated for 2 hours. The dissolved oxygen concentration of the anoxic tank is below 0.5 mg/L.
Further alternatively, the first stirring device 4 and the second stirring device 7 are both in an intermittent rotation mode, the intermittent time is 1 hour, and the rotation time is 8 hours.
Further optionally, the solar ac power generation system is composed of a photovoltaic panel 16, a charging controller, an inverter and a storage battery, the area of the photovoltaic panel 16 is 2m 2, and the irradiation ratio is that: 1000W/m 2.
Further alternatively, the phosphorus-containing sludge in the drain chamber 9 is collected periodically, with a collection period of once every three months.
The water treatment method of the two-stage moving bed biological membrane modified septic tank driven by solar energy comprises the following steps:
S1, the discharged fecal sewage is pumped into an intake chamber 1, the water quantity is regulated by the intake chamber 1, then flows into a precipitation chamber 2, and enters a two-stage anoxic and aerobic moving bed biomembrane system after preliminary sedimentation is completed under the action of gravity;
s2, the fecal sewage firstly enters a settling chamber 2 for solid-liquid separation, and the hydraulic retention time is 25h; then enters a first-stage anoxic chamber 3 for anaerobic fermentation, maintains the facultative anaerobic anoxic condition, and is fully mixed under the stirring of a first stirring device 4; the completely mixed liquid enters a primary aerobic chamber 5, a suspended filler 10 is used as a biological carrier, the biological film orderly moves in a pool under the action of a first micro-aeration device 11 at the bottom, the biological film gradually grows on the surface of the suspended filler 10 to form a moving bed biological film, and the aeration time of the first micro-aeration device 11 is controlled by a time controller 14; the treated sewage then enters a secondary anoxic chamber 6 for continuous stirring; continuously entering the next secondary aerobic tank under the action of water power, and adopting the same aeration rate and aeration time with the primary aerobic tank; finally, the sewage enters a water draining chamber 9, and part of sewage in the water draining chamber 9 flows back to the first-stage anoxic chamber 3;
S3, an external photovoltaic panel 16 absorbs solar energy, and a photovoltaic inverter 17 converts variable direct-current voltage generated by the photovoltaic solar panel into alternating current with mains frequency to provide power for the first stirring device 4, the first micro-aeration device 11, the second stirring device 7 and the second micro-aeration device 13;
s4, collecting the phosphorus-containing sludge in the drainage chamber 9 through a sludge collecting port 15, and discharging the supernatant through a drainage port.
The invention is further illustrated by the following examples:
example 1
The invention relates to a solar-driven two-stage moving bed biological film modified septic tank for treating simulated fecal sewage, which comprises the following steps: the hydraulic retention time is regulated to 25 hours, fecal sewage is pumped into a water inlet chamber and then flows through a precipitation chamber to enter a primary anoxic-aerobic biomembrane reaction system, and sequentially passes through a primary anoxic chamber and a primary aerobic chamber, wherein the primary anoxic chamber is operated for 8 hours in stirring period, the primary aerobic chamber is intermittently operated for one hour, the primary aerobic chamber is operated for 10 hours in aeration period, the intermittent period is 2 hours, the aeration rate is 3.5L/min, then enters a secondary anoxic-aerobic moving bed biomembrane system, and the same operation condition is adopted for the primary anoxic-aerobic moving bed biomembrane system, finally enters a water discharge chamber, the sewage reflux ratio is 150%, the average sunlight time of a solar drive system is 6 hours, the average COD removal rate is 94.5%, the average ammonia nitrogen removal rate is 99.7%, the average total nitrogen removal rate is 84%, and the average total phosphorus removal rate is 74.6%.
Example 2
The invention relates to a solar-driven two-stage moving bed biological film modified septic tank for treating simulated fecal sewage, which comprises the following steps: the hydraulic retention time is regulated to 13 hours, fecal sewage is pumped into a water inlet chamber and then flows through a precipitation chamber to enter a primary anoxic-aerobic biological film reaction system, and sequentially passes through a primary anoxic chamber and a primary aerobic chamber, wherein the primary anoxic chamber is operated for 8 hours in stirring period, the primary aerobic chamber is intermittently operated for one hour, the primary aerobic chamber is operated for 10 hours in aeration period, the intermittent period is 2 hours, the aeration rate is 3.5L/min, then enters a secondary anoxic-aerobic moving bed biological film system, the operation conditions are the same as the primary anoxic-aerobic moving bed biological film system, finally enters a water discharge chamber, the sewage reflux ratio is 150%, the average sunlight time of a solar drive system is 6 hours, the average COD removal rate is 88.7%, the average ammonia nitrogen removal rate is 96.9%, the average total nitrogen removal rate is 88.3%, and the average total phosphorus removal rate is 76.3%.
Example 3
The invention relates to a solar-driven two-stage moving bed biological film modified septic tank for treating simulated fecal sewage, which comprises the following steps: the hydraulic retention time is regulated to 7 hours, fecal sewage is pumped into a water inlet chamber and then flows through a precipitation chamber to enter a primary anoxic-aerobic biological film reaction system, the fecal sewage sequentially passes through a primary anoxic chamber and a primary aerobic chamber, the primary anoxic chamber is operated for 8 hours in stirring period, the primary aerobic chamber is intermittently operated for one hour, the primary aerobic chamber is operated for 10 hours in aeration period, the intermittent period is 2 hours, the aeration rate is 3.5L/min, then the fecal sewage enters a secondary anoxic-aerobic moving bed biological film system, the operation conditions are the same as the primary anoxic-aerobic moving bed biological film system, finally the fecal sewage enters a water discharge chamber, the sewage reflux ratio is 150%, the average sunlight time of a solar drive system is 6 hours, the average COD removal rate is 76.1%, the average ammonia nitrogen removal rate is 67.2%, the average total nitrogen removal rate is 65.9%, and the average total phosphorus removal rate is 70.9%.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" or "comprises" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of the words first, second, third, etc. do not denote any order, and the words may be interpreted as names.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the invention adopts the anoxic-aerobic moving bed biological film technology in the integrated septic tank, and simultaneously realizes the removal of pollutants, nitrogen and phosphorus and the minimization of sludge yield. The sewage is firstly subjected to solid-liquid separation and preliminary anaerobic digestion under the anaerobic condition of a settling chamber, and then partial anaerobic degradation of organic pollutants and denitrification nitrogen removal occur in an anoxic chamber. The moving biological carriers suspended in the aerobic chamber extend the solids residence time and reduce the sludge yield. The microorganisms attached to the biological carrier are subjected to nitrification under the aerobic condition, and then the accumulated nitrite and nitrate can be partially denitrified due to the micro anoxic zone in the biological carrier, so that synchronous nitrification and denitrification are realized, competition with other fast-growing heterotrophic bacteria is avoided, and the denitrification efficiency is greatly improved. Biological phosphorus removal is achieved by periodic mud removal.
The two-stage AO improves the overall process performance, so that the improved septic tank can operate under high load, and can quickly recover when impacted by load in areas with unstable water quality and water quantity. In addition, the intermittent stirring and intermittent aeration modes reduce the falling of the biological film caused by flushing, are beneficial to the increment of microorganisms and the secretion of extracellular polymers, increase the thickness of the biological film and the population of the microorganisms, are beneficial to strengthening the continuous degradation effect of pollutants of the microorganisms under adverse conditions, and reduce part of energy consumption. The invented treatment system has the advantages of easy operation, space saving and reduced maintenance and energy requirements.
The solar driving system completely provides energy for the biological treatment system, does not need to additionally increase electric energy, is beneficial to being used in alpine regions and regions with insufficient electric power transportation, and reduces the running cost.
The invention has high degradation efficiency and denitrification and dephosphorization efficiency on fecal sewage, obviously improves the effluent quality to reach the recycling standard, and realizes the in-situ high-efficiency energy-saving treatment of fecal sewage.
All of the features disclosed in this specification, except mutually exclusive features, may be combined in any manner.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (3)
1. A solar-driven two-stage moving bed biomembrane improvement septic tank is characterized by comprising a two-stage anoxic and aerobic moving bed biomembrane system and a solar driving system,
The two-stage anoxic and aerobic moving bed biological film system comprises a water inlet chamber, a settling chamber, a primary anoxic chamber, a primary aerobic chamber, a secondary anoxic chamber, a secondary aerobic chamber and a water discharge chamber which are sequentially arranged and communicated, wherein the primary anoxic chamber and the primary aerobic chamber form the primary anoxic and aerobic moving bed biological film system, the secondary anoxic chamber and the secondary aerobic chamber form the secondary anoxic and aerobic moving bed biological film system, the water inlet chamber is provided with a water inlet, the water discharge chamber is provided with a water outlet, and the bottom of the water discharge chamber is provided with a sludge collection port;
The first stirring device arranged at the top is arranged in the primary anoxic chamber, the first micro-aeration device for uniform aeration is arranged at the bottom of the primary aerobic chamber, and suspended filler is uniformly dispersed in the primary aerobic chamber; the secondary anoxic chamber is internally provided with a second stirring device arranged at the top, the bottom of the secondary aerobic chamber is provided with a second micro-aeration device for uniform aeration, and suspended filler is uniformly dispersed in the secondary aerobic chamber;
The solar driving system comprises a photovoltaic panel and a photovoltaic inverter, wherein the first stirring device, the first micro-aeration device, the second stirring device and the second micro-aeration device are respectively and electrically connected with the photovoltaic inverter, the photovoltaic panel absorbs solar energy and converts the solar energy into electric energy, and the photovoltaic inverter converts the solar energy into alternating current with the mains frequency to drive the first stirring device, the first micro-aeration device, the second stirring device and the second micro-aeration device;
The suspension filler in the primary aerobic chamber and the secondary aerobic chamber is an improved polyurethane sponge filler, the size is 30 multiplied by 30 mm, the porosity is 95%, the specific surface area is 4000 m 2/m3, the filling rate is 30%, and the dissolved oxygen is 2-4 mg/L;
the first micro-aeration device and the second micro-aeration device are microporous aeration discs, the time is 10 hours of operation, and the interval is 2 hours;
the first stirring device and the second stirring device are in an intermittent rotation mode, the intermittent time is 1 hour, and the rotation time is 8 hours;
The drainage chamber is provided with a sewage return port, and part of liquid in the drainage chamber flows back to the primary anoxic chamber through the sewage return port;
the moving bed biological film system comprises a main body box body, a water inlet chamber, a sedimentation chamber, a primary anoxic chamber, a primary aerobic chamber, a secondary anoxic chamber, a secondary aerobic chamber and a water discharge chamber are all arranged in the main body box body,
The water inlet chamber is separated from the sedimentation chamber by a first baffle, and a water port which is communicated with the water inlet chamber and the sedimentation chamber is arranged in the middle part or the upper part of the first baffle;
the sedimentation chamber is separated from the primary anoxic chamber by a second partition board, and the middle part or the upper part of the second partition board is provided with a water port for communicating the sedimentation chamber with the primary anoxic chamber;
The first-stage aerobic chamber and the first-stage anoxic chamber are separated by a third baffle plate and a first guide plate, the third baffle plate is arranged at one side of the bottom of the main body box body, which is close to the first-stage aerobic chamber, the upper edge of the third baffle plate is positioned at the middle part or the upper part of the first-stage aerobic chamber, the first guide plate is arranged at one side of the top of the main body box body, which is close to the first-stage anoxic chamber, the lower edge of the first guide plate is positioned below the upper edge of the third baffle plate, and a flow channel for communicating the first-stage aerobic chamber and the first-stage anoxic chamber is formed between the third baffle plate and the first guide plate;
The first-stage anoxic chamber and the second-stage aerobic chamber are separated by a fourth baffle plate and a second baffle plate, the fourth baffle plate is arranged at one side of the bottom of the main body box body, which is close to the first-stage anoxic chamber, the upper edge of the fourth baffle plate is positioned at the middle part or the upper part of the first-stage anoxic chamber, the second baffle plate is arranged at one side of the top of the main body box body, which is close to the second-stage aerobic chamber, the lower edge of the second baffle plate is positioned below the upper edge of the fourth baffle plate, and a flow channel for communicating the first-stage anoxic chamber and the second-stage aerobic chamber is formed between the fourth baffle plate and the second baffle plate;
The second-stage aerobic chamber and the second-stage anoxic chamber are separated by a fifth baffle plate and a third baffle plate, the fifth baffle plate is arranged at one side of the bottom of the main body box body, which is close to the second-stage aerobic chamber, the upper edge of the fifth baffle plate is positioned at the middle part or the upper part of the second-stage aerobic chamber, the third baffle plate is arranged at one side of the top of the main body box body, which is close to the second-stage anoxic chamber, the lower edge of the third baffle plate is positioned below the upper edge of the fifth baffle plate, and a flow channel for communicating the second-stage aerobic chamber and the second-stage anoxic chamber is formed between the fifth baffle plate and the third baffle plate;
The secondary anoxic chamber is separated from the sixth partition plate of the water draining chamber, and the middle part or the upper part of the sixth partition plate is provided with a water port for communicating the secondary anoxic chamber with the water draining chamber;
a method of water treatment comprising the steps of:
S1, the discharged fecal sewage is pumped into a water inlet chamber, the water quantity is regulated by the water inlet chamber, then flows into a precipitation chamber, and enters a two-stage anoxic and aerobic moving bed biomembrane system after preliminary sedimentation is completed under the action of gravity;
s2, the fecal sewage firstly enters a precipitation chamber for solid-liquid separation, and the hydraulic retention time is 25 h; then entering a primary anoxic chamber for anaerobic fermentation, maintaining facultative anaerobic anoxic conditions, and completely mixing under the stirring of a first stirring device; the mixed solution after complete mixing enters a primary aerobic chamber, suspended filler is used as a biological carrier, the biological carrier orderly moves in a tank under the action of a first micro-aeration device at the bottom, a biological film gradually grows on the surface of the suspended filler to form a moving bed biological film, and the aeration time of the first micro-aeration device is controlled by adopting a time controller; the treated sewage then enters a secondary anoxic chamber to be continuously stirred; continuously entering the next secondary aerobic tank under the action of water power, and adopting the same aeration rate and aeration time with the primary aerobic tank; finally, the sewage enters a water draining chamber, and part of sewage in the water draining chamber flows back to the first-stage anoxic chamber;
S3, the external photovoltaic panel absorbs solar energy, and the variable direct current voltage generated by the photovoltaic solar panel is converted into alternating current with the mains frequency through the photovoltaic inverter, so that power is provided for the first stirring device, the first micro-aeration device, the second stirring device and the second micro-aeration device;
s4, collecting the phosphorus-containing sludge in the drainage chamber through a sludge collecting port, and discharging supernatant through a drainage port.
2. The improved two-stage moving bed biological membrane septic tank adopting solar energy driving as claimed in claim 1, wherein the lower end of the first deflector is an inclined plate inclined to one side of the primary anoxic chamber, the lower end of the second deflector is an inclined plate inclined to one side of the secondary aerobic chamber, and the lower end of the third deflector is an inclined plate inclined to one side of the secondary anoxic chamber.
3. The improved two-stage moving bed biological membrane septic tank driven by solar energy according to claim 1, wherein the solar alternating current power generation system consists of a photovoltaic panel, a charging controller, an inverter and a storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210669852.4A CN115108635B (en) | 2022-06-14 | 2022-06-14 | Adopt solar drive's two-stage moving bed biomembrane improvement septic tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210669852.4A CN115108635B (en) | 2022-06-14 | 2022-06-14 | Adopt solar drive's two-stage moving bed biomembrane improvement septic tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115108635A CN115108635A (en) | 2022-09-27 |
| CN115108635B true CN115108635B (en) | 2024-06-18 |
Family
ID=83328016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210669852.4A Active CN115108635B (en) | 2022-06-14 | 2022-06-14 | Adopt solar drive's two-stage moving bed biomembrane improvement septic tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115108635B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424503A (en) * | 2011-10-26 | 2012-04-25 | 同济大学 | Method for treating high-concentration nitrogen-containing waste water and reactor for realizing the same |
| CN106630149A (en) * | 2017-01-12 | 2017-05-10 | 机械工业第六设计研究院有限公司 | Biomembrance two-stage A/O denitrification system and biomembrance two-stage A/O denitrification process |
| CN206985961U (en) * | 2017-05-26 | 2018-02-09 | 上海能辉科技股份有限公司 | Buried integrated sewage processing unit for photovoltaic plant |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201458895U (en) * | 2009-08-03 | 2010-05-12 | 王玉华 | Integrated type sewage treatment device for hotels and residential quarters |
| CN101863590B (en) * | 2010-06-17 | 2011-11-16 | 同济大学 | Combined anoxic/aerobic enhanced biological activated carbon dynamic membrane nitrogen and phosphorus removal process |
| CN106830543A (en) * | 2017-03-02 | 2017-06-13 | 南昌大学 | A/O SBBR oxidation pond artificial wetland treatments pig farm biogas slurry technique |
| FR3067024B1 (en) * | 2017-06-02 | 2020-07-31 | Veolia Water Solutions & Tech | PROCESS FOR TREATMENT OF WATER IN A SYSTEM INCLUDING AT LEAST ONE SEQUENTIAL DISCONTINUOUS REACTOR AND A BIOLOGICAL FILM REACTOR WITH MOVABLE BED. |
| CN107381956A (en) * | 2017-08-21 | 2017-11-24 | 胡焕荣 | A kind of small towns domestic sewage processing system and method |
| CN108017152A (en) * | 2018-01-09 | 2018-05-11 | 苏州市清泽环境技术有限公司 | The biological denitrificaion combination pond of controllable Anoxic/Aerobic and technique |
| CN110015757B (en) * | 2019-04-30 | 2021-10-26 | 北京工业大学 | Method and device for treating municipal sewage by coupling endogenous short-cut denitrification and anaerobic ammonia oxidation in anoxic zone of AOA (argon oxygen decarburization) process |
| CN111675435A (en) * | 2020-06-17 | 2020-09-18 | 江苏中车环保设备有限公司 | Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method |
-
2022
- 2022-06-14 CN CN202210669852.4A patent/CN115108635B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424503A (en) * | 2011-10-26 | 2012-04-25 | 同济大学 | Method for treating high-concentration nitrogen-containing waste water and reactor for realizing the same |
| CN106630149A (en) * | 2017-01-12 | 2017-05-10 | 机械工业第六设计研究院有限公司 | Biomembrance two-stage A/O denitrification system and biomembrance two-stage A/O denitrification process |
| CN206985961U (en) * | 2017-05-26 | 2018-02-09 | 上海能辉科技股份有限公司 | Buried integrated sewage processing unit for photovoltaic plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115108635A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102206019B (en) | Refuse incineration plant percolate treatment system | |
| EP1070023B1 (en) | Surge anoxic mix sequencing batch reactor systems | |
| EP2603464B1 (en) | Treatment of municipal wastewater with anaerobic digestion | |
| CN101967031B (en) | Garbage percolate treatment method | |
| CN203474603U (en) | Sewage continuous flow A2O biochemical reaction and sludge static precipitation integrated device | |
| CN111138038B (en) | Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method | |
| CN103183454B (en) | Coupling type biological denitrification method and system thereof | |
| CN102951731A (en) | Airlift oxidation ditch type membrane bioreactor | |
| CN101219831A (en) | Migration bed/activated sludge process series arrangement | |
| CN115108635B (en) | Adopt solar drive's two-stage moving bed biomembrane improvement septic tank | |
| CN203159405U (en) | Coupled biological denitrification system | |
| CN2725288Y (en) | Anaerobic aerobic integrated fixed bed biological membrane reactor | |
| CN111252994A (en) | Domestic fungus wastewater treatment method | |
| CN202754840U (en) | Biological aerated filters in two-stage serial connection | |
| CN212476267U (en) | Air-lift circulation type membrane bioreactor system | |
| CN111747529A (en) | Airlift loop type membrane bioreactor system and sewage treatment method | |
| CN205088063U (en) | Handle high -concentration ammonia nitrogen organic waste water's equipment | |
| CN216106514U (en) | Sewage treatment system based on AO-MBBR-inductive coupling filtering pond | |
| CN111252998A (en) | Edible fungus wastewater treatment method | |
| CN215975402U (en) | Full-scale treatment system for landfill leachate membraneless concentrated solution | |
| CN2714556Y (en) | Sewage nutrient removing device for integrated circulating fluidized bed | |
| CN217077131U (en) | Slaughter wastewater treatment system | |
| CN113772890B (en) | Sewage treatment system and treatment method based on AO-MBBR-inductively coupled filter tank | |
| CN220723803U (en) | Energy-saving rotational flow type beautiful village sewage treatment equipment | |
| CN218321080U (en) | Pig farm effluent disposal system based on BFR technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |