CN111661981A - Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination - Google Patents

Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination Download PDF

Info

Publication number
CN111661981A
CN111661981A CN202010519814.1A CN202010519814A CN111661981A CN 111661981 A CN111661981 A CN 111661981A CN 202010519814 A CN202010519814 A CN 202010519814A CN 111661981 A CN111661981 A CN 111661981A
Authority
CN
China
Prior art keywords
solar energy
tank
water
sewage
water tank
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.)
Pending
Application number
CN202010519814.1A
Other languages
Chinese (zh)
Inventor
任显龙
刘娜
果志强
雪华
李建霖
武莉莉
马原
梁鹏
刘赞辉
王靖宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Boiler Co Ltd
Original Assignee
Harbin Boiler Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin Boiler Co Ltd filed Critical Harbin Boiler Co Ltd
Priority to CN202010519814.1A priority Critical patent/CN111661981A/en
Publication of CN111661981A publication Critical patent/CN111661981A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1236Particular type of activated sludge installations
    • C02F3/1268Membrane bioreactor systems
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A method for treating domestic sewage in cold rural areas by using solar energy-MBR (membrane bioreactor) in a combined manner. At present, the temperature in winter in northern cold areas is lower, so that the activity of microorganisms is sharply reduced and even killed, and the sewage is discharged out of standard, and the invention comprises the following components: solar energy collection unit (1), solar energy collection unit one side is connected with heat transfer coil's one end in getting into constant temperature water tank (8) through constant temperature water tank circulating pump (6), the heat transfer coil other end passes through solar energy circulating pump (4) and is connected with solar energy heat storage water tank (2), solar energy heat storage water tank is respectively through hot water working pump (3) and electricity auxiliary heating equipment (5), solar energy collection unit connection, electricity auxiliary heating equipment passes through the pipeline and is connected with solar energy collection unit opposite side, constant temperature water tank one side is connected with septic tank (7), the opposite side is connected with integration MBR equipment (12) through integration equipment working pump (11). The invention relates to a method for treating domestic sewage in cold rural areas by using solar energy-MBR (membrane bioreactor) in a combined manner.

Description

Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination
The technical field is as follows:
the invention relates to the technical field of sewage treatment by solar heat collection, in particular to a method for treating domestic sewage in cold rural areas by solar energy-MBR (membrane bioreactor) in a combined manner.
Background art:
in recent years, due to rural economic development, rural sewage treatment is an important component part of new rural construction, and according to investigation, the contribution of small-town and rural sewage to the conventional pollution indexes (COD, total nitrogen and total phosphorus) of the water body of China exceeds that of urban sewage, and is close to the sum of the urban sewage and industrial wastewater; at present, the requirements of local rural sewage treatment standards in regions such as Jiang Zhe Hui are met, the principle of local conditions and distributed design are adopted, centralized control is carried out, a high-standard, low-cost and low-energy-consumption sewage integrated treatment device is adopted, a distributed sewage treatment system is integrated equipment designed and researched aiming at rural dispersed sewage treatment, the standardized and modular design is adopted, and the integrated equipment has the characteristics of moderate concentration, small occupied area per household, high treatment efficiency, low sludge yield, convenience and quickness in field installation and the like,
at present, the treatment of rural domestic sewage in high and cold regions such as northeast China is still a difficult point in the water treatment industry at present, and the temperature in winter in the northern cold regions is low, so that the activity of microorganisms is rapidly reduced, even the microorganisms die, and the sewage is discharged out of limits. The treatment of the domestic sewage of villages and towns has important significance for building beautiful villages, so that the research on the domestic sewage treatment system of villages and towns in northern cold areas has profound influence.
The invention content is as follows:
the invention aims to provide a method for treating domestic sewage in cold rural areas by utilizing solar energy-MBR (membrane bioreactor) in a combined manner, which creates good environmental conditions and hydraulic conditions for the growth and the propagation of various dominant microorganisms, so that the biochemical processes such as degradation of organic matters and the like keep a high-efficiency reaction state, and the biochemical removal rate is effectively improved.
The above purpose is realized by the following technical scheme:
a method for treating domestic sewage in cold rural areas by using solar energy-MBR (membrane bioreactor) in a combined manner comprises the following steps: solar energy collection unit 1, characterized by: solar energy collection unit one side get into the constant temperature water tank through the constant temperature water tank circulating pump in be connected with heat exchange coil's one end, the heat exchange coil other end pass through the solar energy circulating pump and be connected with solar energy heat storage water tank, solar energy heat storage water tank respectively through hot water working shaft and electric auxiliary heating equipment solar energy collection unit connect, electric auxiliary heating equipment pass through the pipeline with solar energy collection unit opposite side connect, constant temperature water tank one side be connected with the septic tank, the opposite side is connected with integration MBR equipment through integration equipment working shaft, constant temperature water tank inboard install temperature level sensor, a set of electric heater respectively.
The method for treating the domestic sewage in the cold rural areas by utilizing the solar energy-MBR (membrane bioreactor) combination comprises the following steps:
firstly, one part of hot water produced by a solar system can be used for household life needs, the other part of hot water is used for temperature elevation of sewage, and dispersed domestic sewage is collected and then uniformly flows through septic tank equipment to carry out pretreatment of the domestic sewage, wherein the pretreatment has the functions of intercepting, filtering impurities and hydrolyzing and acidifying, so that part of impurities in the sewage are physically removed;
under the illumination condition, the solar heat collection unit absorbs heat, and the hot water supply pump and the solar circulating pump are adjusted through the chain induction of the temperature and water level sensor inside the solar heat storage water tank, so that tap water in the solar heat storage water tank reaches a preset constant temperature, and on cloudy days or when the illumination intensity is insufficient, the electric auxiliary heating equipment is started to supply sufficient hot water; a heat exchange coil is arranged in the constant-temperature water tank, hot water flows through the coil, and after sewage in the constant-temperature water tank is subjected to heat exchange through the coil to form a constant temperature suitable for growth of microorganisms, a water supply pump of the integrated equipment is adjusted through chain induction of a temperature water level sensor in the constant-temperature water tank to enable an electromagnetic valve to be opened, and the sewage enters the integrated MBR equipment to perform anaerobic + aerobic + MBR reaction;
when the illumination intensity cannot be met, when the water temperature of the constant-temperature water tank is still lower than the water temperature of the water tank within a set time period after the hot water of the solar heat storage water tank exchanges heat with the sewage of the constant-temperature water tank, the electric heating is assisted to start through the chain induction of the temperature water level sensor until the water temperature within the set time period is reached, and the maximum utilization of solar energy is ensured;
lifting the sewage reaching the set temperature to a regulating tank in the integrated MBR equipment by a water supply pump, enabling the sewage with uniformly mixed water quality to enter an anaerobic tank of the integrated MBR equipment, and decomposing organic high molecular pollutants which are difficult to decompose in the sewage into organic low molecular pollutants which are easy to decompose by using the degradation capability of anaerobic microorganisms after a certain retention time;
effluent automatically flows to a biological contact oxidation tank in the integrated MBR equipment for aerobic biochemical treatment, pollutants are finally decomposed into carbon dioxide and water by utilizing aerobic microorganisms after a long retention time, phosphorus is separated from sewage by utilizing the phosphorus accumulation effect of the aerobic microorganisms, a mud-water mixture in the aerobic tank flows back to an anaerobic tank for denitrification, and ammonia nitrogen is converted into ammonia gas by virtue of the denitrification effect of the anaerobic microorganisms by virtue of carbon-containing organic matters in raw water, so that the denitrification function is realized;
effluent of the aerobic tank enters an MBR tank in the integrated MBR equipment for advanced treatment, solid-liquid separation of mud-water mixture is realized through the filtering action of a membrane, so that the aims of removing organic matters and realizing nitrogen and phosphorus removal are fulfilled, water subjected to membrane filtration treatment can reach corresponding discharge standards after being subjected to disinfection treatment, and residual sludge enters a sludge tank and is periodically discharged.
Has the advantages that:
1. the invention utilizes the solar energy-MBR combined system and corresponding auxiliary process equipment required by the system to solve the problem of hot water supply of each household on one hand and solve the problem of the optimal temperature required by the microbial growth of the MBR integrated sewage treatment equipment on the other hand, thereby realizing that the solar energy-MBR combined system can efficiently and stably remove the rural domestic sewage in cold areas, namely, the high-quality effluent can be more favorably obtained when the domestic sewage with the same flow rate is treated at the same low temperature.
2. The invention overcomes the defect that microorganisms basically stop growing or even die because the traditional rural domestic sewage integrated treatment device does not consider the influence of temperature, the suitable growth temperature of the microorganisms is 18-30 ℃, the microorganisms basically stop growing or even die at 5 ℃, and the temperature becomes the primary factor restricting the popularization of the traditional rural domestic sewage treatment integrated equipment in cold areas when the temperature is below-20 ℃ in winter in the north, particularly in the northeast, and the solar energy-MBR combined system is utilized to efficiently and stably remove the rural domestic sewage treatment method in the cold areas, namely, when the domestic sewage with the same flow is treated at the same low temperature, pollutants in water can be stably removed.
3. The invention utilizes the solar heat collecting device to solve the problem of hot water supply of each household and the problem of the optimal temperature required by the microbial growth of MBR integrated sewage treatment equipment on the other hand, and realizes that the solar-MBR combined system can efficiently and stably remove the domestic sewage in cold rural areas, namely, the solar-MBR combined system is more beneficial to obtaining high-quality effluent when the domestic sewage with the same flow rate enters at the same low temperature.
4. A part of hot water produced by the solar system can be used for living needs of residents, and the other part of hot water is used for raising the temperature of sewage. The collected sewage is subjected to heat exchange through a solar system, so that the sewage is discharged into MBR equipment for integrated domestic sewage treatment to perform biological anaerobic-aerobic-MBR reaction after the temperature of the sewage reaches the condition suitable for the growth and survival of microorganisms, and the stable and ideal treatment effect is achieved.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
example 1:
a method for treating domestic sewage in cold rural areas by using solar energy-MBR (membrane bioreactor) in a combined manner comprises the following steps: solar energy collection unit 1, solar energy collection unit one side get into constant temperature water tank 8 through constant temperature water tank circulating pump 6 in be connected with heat exchange coil's one end, the heat exchange coil other end pass through solar energy circulating pump 4 and be connected with solar energy heat storage water tank 2, solar energy heat storage water tank respectively through hot water working pump 3 and electricity auxiliary heating equipment 5 solar energy collection unit connect, electricity auxiliary heating equipment pass through the pipeline with solar energy collection unit opposite side connect, constant temperature water tank one side be connected with septic tank 7, the opposite side is connected with integration MBR equipment 12 through integration equipment working pump 11, constant temperature water tank inboard install temperature level sensor 9, a set of electric heater 10 respectively.
Example 2:
the method for treating the domestic sewage in the cold rural areas by utilizing the solar energy-MBR combination in the embodiment 1 comprises the following steps:
firstly, one part of hot water produced by a solar system can be used for household life needs, the other part of hot water is used for temperature elevation of sewage, and dispersed domestic sewage is collected and then uniformly flows through septic tank equipment to carry out pretreatment of the domestic sewage, wherein the pretreatment has the functions of intercepting, filtering impurities and hydrolyzing and acidifying, so that part of impurities in the sewage are physically removed;
the hot water produced by the solar system is partially supplied to households, so that the outlet water temperature is increased, and the subsequent heat exchange step is facilitated; a heat exchange coil is arranged in the constant-temperature water tank, hot water flows through the coil, and after sewage in the constant-temperature water tank is subjected to heat exchange through the coil to form a constant temperature suitable for growth of microorganisms, a water supply pump of the integrated equipment is adjusted through chain induction of a temperature water level sensor in the constant-temperature water tank to enable an electromagnetic valve to be opened, and the sewage enters the integrated MBR equipment to perform anaerobic + aerobic + MBR reaction;
when the illumination intensity cannot be met, when the water temperature of the constant-temperature water tank is still lower than the water temperature of the water tank within a set time period after the hot water of the solar heat storage water tank exchanges heat with the sewage of the constant-temperature water tank, the electric heating is assisted to start through the chain induction of the temperature water level sensor until the water temperature within the set time period is reached, and the maximum utilization of solar energy is ensured;
lifting the sewage reaching the set temperature to a regulating tank in the integrated MBR equipment by a water supply pump, enabling the sewage with uniformly mixed water quality to enter an anaerobic tank of the integrated MBR equipment, and decomposing organic high molecular pollutants which are difficult to decompose in the sewage into organic low molecular pollutants which are easy to decompose by using the degradation capability of anaerobic microorganisms after a certain retention time;
effluent automatically flows to a biological contact oxidation tank in the integrated MBR equipment for aerobic biochemical treatment, pollutants are finally decomposed into carbon dioxide and water by utilizing aerobic microorganisms after a long retention time, phosphorus is separated from sewage by utilizing the phosphorus accumulation effect of the aerobic microorganisms, a mud-water mixture in the aerobic tank flows back to an anaerobic tank for denitrification, and ammonia nitrogen is converted into ammonia gas by virtue of the denitrification effect of the anaerobic microorganisms by virtue of carbon-containing organic matters in raw water, so that the denitrification function is realized;
effluent of the aerobic tank enters an MBR tank in the integrated MBR equipment for advanced treatment, solid-liquid separation of mud-water mixture is realized through the filtering action of a membrane, so that the aims of removing organic matters and realizing nitrogen and phosphorus removal are fulfilled, water subjected to membrane filtration treatment can reach corresponding discharge standards after being subjected to disinfection treatment, and residual sludge enters a sludge tank and is periodically discharged.

Claims (2)

1. A method for treating domestic sewage in cold rural areas by using a solar energy-MBR combined system comprises the following steps: solar energy collection unit, characterized by: solar energy collection unit one side get into the constant temperature water tank through the constant temperature water tank circulating pump in be connected with heat exchange coil's one end, the heat exchange coil other end pass through the solar energy circulating pump and be connected with solar energy heat storage water tank, solar energy heat storage water tank respectively through hot water working shaft and electric auxiliary heating equipment solar energy collection unit connect, electric auxiliary heating equipment pass through the pipeline with solar energy collection unit opposite side connect, constant temperature water tank one side be connected with the septic tank, the opposite side is connected with integration MBR equipment through integration equipment working shaft, constant temperature water tank inboard install temperature level sensor, a set of electric heater respectively.
2. The method for treating the domestic sewage in the cold rural areas by using the solar energy-MBR (membrane bioreactor) combination, according to claim 1, is characterized in that: the method comprises the following steps:
firstly, one part of hot water produced by a solar system can be used for household life needs, the other part of hot water is used for temperature elevation of sewage, and dispersed domestic sewage is collected and then uniformly flows through septic tank equipment to carry out pretreatment of the domestic sewage, wherein the pretreatment has the functions of intercepting, filtering impurities and hydrolyzing and acidifying, so that part of impurities in the sewage are physically removed;
under the illumination condition, the solar heat collection unit absorbs heat, and the hot water supply pump and the solar circulating pump are adjusted through the chain induction of the temperature and water level sensor inside the solar heat storage water tank, so that tap water in the solar heat storage water tank reaches a preset constant temperature, and on cloudy days or when the illumination intensity is insufficient, the electric auxiliary heating equipment is started to supply sufficient hot water; a heat exchange coil is arranged in the constant-temperature water tank, hot water flows through the coil, and after sewage in the constant-temperature water tank is subjected to heat exchange through the coil to form a constant temperature suitable for growth of microorganisms, a water supply pump of the integrated equipment is adjusted through chain induction of a temperature water level sensor in the constant-temperature water tank to enable an electromagnetic valve to be opened, and the sewage enters the integrated MBR equipment to perform anaerobic + aerobic + MBR reaction;
when the illumination intensity cannot be met, when the water temperature of the constant-temperature water tank is still lower than the water temperature of the water tank within a set time period after the hot water of the solar heat storage water tank exchanges heat with the sewage of the constant-temperature water tank, the electric heating is assisted to start through the chain induction of the temperature water level sensor until the water temperature within the set time period is reached, and the maximum utilization of solar energy is ensured;
lifting the sewage reaching the set temperature to a regulating tank in the integrated MBR equipment by a water supply pump, enabling the sewage with uniformly mixed water quality to enter an anaerobic tank of the integrated MBR equipment, and decomposing organic high molecular pollutants which are difficult to decompose in the sewage into organic low molecular pollutants which are easy to decompose by using the degradation capability of anaerobic microorganisms after a certain retention time;
effluent automatically flows to a biological contact oxidation tank in the integrated MBR equipment for aerobic biochemical treatment, pollutants are finally decomposed into carbon dioxide and water by utilizing aerobic microorganisms after a long retention time, phosphorus is separated from sewage by utilizing the phosphorus accumulation effect of the aerobic microorganisms, a mud-water mixture in the aerobic tank flows back to an anaerobic tank for denitrification, and ammonia nitrogen is converted into ammonia gas by virtue of the denitrification effect of the anaerobic microorganisms by virtue of carbon-containing organic matters in raw water, so that the denitrification function is realized;
effluent of the aerobic tank enters an MBR tank in the integrated MBR equipment for advanced treatment, solid-liquid separation of mud-water mixture is realized through the filtering action of a membrane, so that the aims of removing organic matters and realizing nitrogen and phosphorus removal are fulfilled, water subjected to membrane filtration treatment can reach corresponding discharge standards after being subjected to disinfection treatment, and residual sludge enters a sludge tank and is periodically discharged.
CN202010519814.1A 2020-06-09 2020-06-09 Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination Pending CN111661981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010519814.1A CN111661981A (en) 2020-06-09 2020-06-09 Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010519814.1A CN111661981A (en) 2020-06-09 2020-06-09 Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination

Publications (1)

Publication Number Publication Date
CN111661981A true CN111661981A (en) 2020-09-15

Family

ID=72386405

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010519814.1A Pending CN111661981A (en) 2020-06-09 2020-06-09 Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination

Country Status (1)

Country Link
CN (1) CN111661981A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114988570A (en) * 2022-06-24 2022-09-02 广州市山水生态环保建设有限公司 Intelligent anaerobic reaction system for rural domestic sewage treatment
CN115043554A (en) * 2022-07-19 2022-09-13 成都工业学院 Solar intelligent biochemical sewage treatment system and use method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107055799A (en) * 2017-04-27 2017-08-18 东南大学 A kind of processing system and its processing method of domestic sewage in rural areas cold operation
CN109516653A (en) * 2019-01-04 2019-03-26 广州粤康环保工程有限公司 Country sewage integrated equipment for wastewater treatment and method based on distributed control system
CN110282741A (en) * 2019-06-25 2019-09-27 沈阳工大蓝金环保产业技术研究院有限公司 A kind of low temperature resistant dispersant type domestic wastewater processing integration apparatus and its processing method
CN111138038A (en) * 2020-01-17 2020-05-12 生态环境部华南环境科学研究所 Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107055799A (en) * 2017-04-27 2017-08-18 东南大学 A kind of processing system and its processing method of domestic sewage in rural areas cold operation
CN109516653A (en) * 2019-01-04 2019-03-26 广州粤康环保工程有限公司 Country sewage integrated equipment for wastewater treatment and method based on distributed control system
CN110282741A (en) * 2019-06-25 2019-09-27 沈阳工大蓝金环保产业技术研究院有限公司 A kind of low temperature resistant dispersant type domestic wastewater processing integration apparatus and its processing method
CN111138038A (en) * 2020-01-17 2020-05-12 生态环境部华南环境科学研究所 Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114988570A (en) * 2022-06-24 2022-09-02 广州市山水生态环保建设有限公司 Intelligent anaerobic reaction system for rural domestic sewage treatment
CN115043554A (en) * 2022-07-19 2022-09-13 成都工业学院 Solar intelligent biochemical sewage treatment system and use method thereof
CN115043554B (en) * 2022-07-19 2024-03-12 成都工业学院 Solar intelligent biochemical sewage treatment system and application method thereof

Similar Documents

Publication Publication Date Title
CN110002592B (en) Device and method for treating domestic sewage by coupling short-cut denitrification-sludge fermentation with anaerobic ammonia oxidation system
CN100398470C (en) Infiltration method for treating garbage
CN107162186B (en) Device and method for urban sewage anaerobic ammonia oxidation autotrophic nitrogen removal based on granular sludge
CN110668633A (en) Kitchen waste sorting wastewater treatment system and process
CN103833185A (en) Energy recovery-based landfill leachate autotrophic nitrogen removal method
CN110015812B (en) High-concentration livestock and poultry breeding wastewater treatment method
CN114716112A (en) Rural sewage treatment system and process
CN103332788B (en) Multi-stage anaerobic-aerobic combined nitrogen and phosphorus removing device and method for rural domestic sewage
CN111661981A (en) Method for treating cold-region rural domestic sewage by using solar energy-MBR (membrane bioreactor) in combination
CN114105299A (en) Device and method for strengthening carbon source and sludge capture combined autotrophic and heterotrophic denitrification of urban sewage
CN201538734U (en) Sewage treatment device
CN111747527A (en) Low-concentration village and town sewage treatment method
CN105330028A (en) Microbial flocculant, compound flocculation system and preparation and application methods thereof
CN111661980A (en) Method for treating domestic sewage in cold region and rural area by using solar energy-purification tank
CN102491587B (en) Method and device for treating early urban landfill leachate
CN206033377U (en) Low -energy -consumption sewage treatment device
CN110697905B (en) Rapid culture of short-range denitrifying bacteria and NO production by using fermented sludge as carbon source2-In a semiconductor device
CN210505965U (en) Nylon 6 waste water high-efficiency treatment device
CN210085200U (en) Solar energy integration sewage treatment device
CN111995055A (en) Two segmentation SBR reaction equipment of denitrifying phosphorus removal fungus enrichment fast
CN111362505A (en) Treatment process of pig farm wastewater
CN105819626A (en) Combined customized sewage disposal system
CN102329044B (en) Method for treating wastewater from bamboo product
CN213060571U (en) Full-automatic integrated sewage treatment equipment adopting double-power A1/O + MBR method
CN114772859A (en) Low-carbon biological treatment system for pig farm excrement and method for treating excrement

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200915