CN105731637A - Membrane biological water treatment system and method - Google Patents
Membrane biological water treatment system and method Download PDFInfo
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- CN105731637A CN105731637A CN201610093378.XA CN201610093378A CN105731637A CN 105731637 A CN105731637 A CN 105731637A CN 201610093378 A CN201610093378 A CN 201610093378A CN 105731637 A CN105731637 A CN 105731637A
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- 239000012528 membrane Substances 0.000 title claims abstract description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 33
- 244000005700 microbiome Species 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 15
- 238000005273 aeration Methods 0.000 claims description 30
- 238000011001 backwashing Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 6
- 210000005056 cell body Anatomy 0.000 claims 10
- 238000007789 sealing Methods 0.000 claims 3
- 210000004027 cell Anatomy 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 2
- 238000001556 precipitation Methods 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000012510 hollow fiber Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000945 filler Substances 0.000 abstract description 5
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 5
- 230000004060 metabolic process Effects 0.000 abstract description 3
- 235000015097 nutrients Nutrition 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000000108 ultra-filtration Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Classifications
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- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
-
- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/102—Permeable membranes
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- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- 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)
- Separation Using Semi-Permeable Membranes (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
本发明公开了一种膜生物水处理系统及方法，属于生物水处理技术领域。本发明将膜生物反应器与生物膜反应器结合，膜生物反应器采用中空纤维膜组件，同时中空纤维膜组件又作为生物膜反应器的填料，为水中微生物提供生长载体，从而形成生物膜，去除水中的污染物，生物膜中的微生物以污水中的有机污染物或截留在中空纤维膜上的有机污染物为营养物质,并向膜组件中和池体中曝气。本发明利用悬浮微生物、中空纤维膜的超过滤作用和膜上微生物的新陈代谢作用使污水得到净化。
The invention discloses a membrane biological water treatment system and method, belonging to the technical field of biological water treatment. The invention combines the membrane bioreactor with the biofilm reactor, the membrane bioreactor adopts the hollow fiber membrane module, and at the same time the hollow fiber membrane module is used as the filler of the biofilm reactor to provide the growth carrier for the microorganisms in the water, thereby forming the biofilm, To remove the pollutants in the water, the microorganisms in the biofilm use the organic pollutants in the sewage or the organic pollutants trapped on the hollow fiber membrane as nutrients, and aerate the membrane module and the pool body. The invention utilizes suspended microorganisms, the ultrafiltration effect of the hollow fiber membrane and the metabolism of the microorganisms on the membrane to purify the sewage.
Description
技术领域 technical field
本发明属于生物水处理技术领域，具体涉及一种膜生物水处理系统及方法。 The invention belongs to the technical field of biological water treatment, and in particular relates to a membrane biological water treatment system and method.
背景技术 Background technique
生物膜法是指大量的微生物（好氧菌、厌氧菌、兼性菌、真菌、原生动物以及藻类等）附着在介质滤料表面，形成生物膜，污水同生物膜接触后，生物膜中的微生物以污水中的有机污染物为营养物质，在新陈代谢过程中将有机物降解，同时微生物自身也得到增殖，使污水得到净化。其中，提供微生物附着生长的惰性载体称之为滤料或填料。生物膜法具有一些特有优势，比如无需污泥回流，运行管理容易，无污泥膨胀问题，易于微生物生存，运行稳定等。 The biofilm method refers to a large number of microorganisms (aerobic bacteria, anaerobic bacteria, facultative bacteria, fungi, protozoa and algae, etc.) attached to the surface of the media filter material to form a biofilm. The microorganisms use the organic pollutants in the sewage as nutrients, degrade the organic matter in the metabolic process, and at the same time the microorganisms themselves proliferate to purify the sewage. Among them, the inert carrier that provides the attachment and growth of microorganisms is called filter material or filler. The biofilm method has some unique advantages, such as no need for sludge return, easy operation and management, no sludge bulking problem, easy microbial survival, and stable operation.
膜生物反应器（MBR）是一种由膜分离单元与生物处理单元相结合的新型水处理技术，以膜组件取代二沉池，在生物反应器中保持高活性污泥浓度，减少污水处理设施占地，并通过保持低污泥负荷减少污泥量。与传统的生化水处理技术相比，MBR具有以下主要特点：处理效率高、出水水质好；设备紧凑、占地面积小；易实现自动控制、运行管理简单。 Membrane bioreactor (MBR) is a new type of water treatment technology that combines membrane separation unit and biological treatment unit. It replaces the secondary settling tank with membrane modules, maintains high active sludge concentration in the bioreactor, and reduces sewage treatment facilities. occupy less land and reduce sludge volumes by keeping sludge loads low. Compared with the traditional biochemical water treatment technology, MBR has the following main features: high treatment efficiency, good effluent quality; compact equipment, small footprint; easy to realize automatic control, simple operation and management.
公开号为CN104773820A的专利公开了一种膜生物反应器间歇循环曝气装置和曝气方法，此方法为了保证MBR正常运行，需要反应装置进行曝气供氧，曝气产生的气液流也起到冲刷膜面作用，可以缓解膜污染，减小膜内外跨膜压差，延长使用寿命，此专利膜组件无生物膜，处理效果较差，处理效率低；公开号为CN1669941A的专利公开了一种处理石油化工废水的方法，此方法提供一种采用活性污泥法与生物膜法相结合的处理石油化工废水的方法，此方法在原有的污水处理工艺中增加填料，采用两步好氧生物处理来处理石油化工废水，即先用活性污泥法处理废水，然后在同一池中用生物膜法处理废水。 The patent with the publication number CN104773820A discloses a membrane bioreactor intermittent circulation aeration device and aeration method. In order to ensure the normal operation of the MBR, this method requires the reaction device to provide aeration and oxygen supply, and the gas-liquid flow generated by the aeration also plays a role. The function of flushing the membrane surface can alleviate membrane pollution, reduce the transmembrane pressure difference inside and outside the membrane, and prolong the service life. This patented membrane module has no biofilm, the treatment effect is poor, and the treatment efficiency is low; A method for treating petrochemical wastewater. This method provides a method for treating petrochemical wastewater that combines activated sludge and biofilm. This method adds fillers to the original sewage treatment process and uses two-step aerobic biological treatment. To treat petrochemical wastewater, that is, first treat the wastewater with the activated sludge method, and then use the biofilm method to treat the wastewater in the same pool.
发明内容 Contents of the invention
本发明解决的技术问题是提供了一种将膜生物反应器和生物膜反应器结合的膜生物水处理系统及方法。 The technical problem solved by the present invention is to provide a membrane biological water treatment system and method combining a membrane bioreactor and a biofilm reactor.
本发明为解决上述技术问题采用如下技术方案，一种膜生物水处理系统及方法，其特征在于：该膜生物水处理系统包括反应器池体，反应器池体的内侧中部通过膜组件固定架固定有水平布置的膜组件，膜组件进气口通过膜组件风管与设置于反应器池体外侧上沿处的风机相连，该膜组件风管上设有膜组件风管阀门，反应器池体底部的曝气头通过曝气风管与风机相连，该曝气风管上设有曝气风管阀门，膜组件进水口通过反冲洗水管与设置于反应器池体外侧下沿处的反冲洗水泵相连，该反冲洗水管上设有反冲洗水管阀门，膜组件出水口通过排水管与排水泵相连，该排水管上设有排水管阀门，排水管阀门与膜组件之间的排水管上设有排空管，该排空管上设有排空阀，反应器池体的底部通过进水管与进水泵相连，该进水管上设有进水管阀门，反应器池体的侧壁上设有液位计，进水泵、排水泵、风机和反冲洗水泵分别与外部电缆线相连；该膜生物水处理系统的具体运行过程为：首先开启进水管阀门和进水泵，污水从进水管进入反应器池体，当污水水位距离反应器池体上沿0.2-0.5m处关闭进水泵和进水管阀门，开启曝气风管阀门、膜组件风管阀门和风机，曝气4-10h后关闭曝气风管阀门，开始沉淀，沉淀0.5-2h，然后开启反冲洗水管阀门和反冲洗水泵，反冲洗5-20min，开启排空阀排空膜组件中的气体后关闭风机、膜组件风管阀门、反冲洗水泵、反冲洗水管阀门和排空阀，开启排水管阀门和排水泵开始排水，至反应器池体内部水位下降至膜组件上方0.2m处关闭排水泵和排水管阀门，进入下一个循环。 In order to solve the above technical problems, the present invention adopts the following technical scheme, a membrane biological water treatment system and method, which is characterized in that: the membrane biological water treatment system includes a reactor pool body, and the inner middle part of the reactor pool body passes through the membrane module fixing frame The membrane module arranged horizontally is fixed, and the air inlet of the membrane module is connected with the fan arranged on the upper edge of the outside of the reactor pool through the membrane module air duct. The aeration head at the bottom of the body is connected to the fan through the aeration duct. The aeration duct valve is installed on the aeration duct. The backwashing water pump is connected, and the backwashing water pipe valve is provided on the backwashing water pipe. The outlet of the membrane module is connected to the drainage pump through the drain pipe. An emptying pipe is provided, and an emptying valve is provided on the emptying pipe. The bottom of the reactor pool is connected to the water inlet pump through the water inlet pipe. There are liquid level gauges, water inlet pumps, drainage pumps, fans and backwash water pumps are connected to external cables; the specific operation process of the membrane biological water treatment system is: firstly open the water inlet valve and water inlet pump, and the sewage enters the reaction from the water inlet pipe When the sewage water level is 0.2-0.5m away from the upper edge of the reactor pool, close the water inlet pump and water inlet pipe valve, open the aeration air pipe valve, membrane module air pipe valve and fan, and close the aeration after 4-10h of aeration. Air pipe valve, start to settle, settling for 0.5-2h, then open the backwash water pipe valve and backwash water pump, backwash for 5-20min, open the exhaust valve to exhaust the gas in the membrane module, then close the fan and membrane module air pipe valve , backwash water pump, backwash water pipe valve and emptying valve, open the drain pipe valve and the drain pump to start draining, until the water level inside the reactor pool drops to 0.2m above the membrane module, close the drain pump and drain pipe valve, and enter the next cycle.
进一步优选，所述的膜组件包括固定于膜组件固定架上的密封腔体和设置于密封腔体之间且与密封腔体连通的中空纤维膜，该中空纤维膜的外侧管壁上附着有微生物。 Further preferably, the membrane module includes a sealed cavity fixed on the membrane module fixing frame and a hollow fiber membrane arranged between the sealed cavity and communicated with the sealed cavity, the outer tube wall of the hollow fiber membrane is attached with microorganism.
进一步限定，所述的膜组件的上端处于距离反应器池体上沿1/3处，膜组件的下端处于距离反应器池体上沿2/3处。 It is further defined that the upper end of the membrane module is 1/3 away from the upper edge of the reactor pool, and the lower end of the membrane module is 2/3 away from the upper edge of the reactor pool.
本发明结合活性污泥法、生物膜法和膜过滤法于一体，其中膜过滤采用的中空纤维膜组件又作为生物膜法的微生物填料，通过风机向中空纤维膜内通入高压空气为生物膜提供溶解氧并起到清洗中空纤维膜的作用。本发明无需污泥回流，无污泥膨胀问题，易于微生物生存，处理效率高、出水水质好；设备紧凑、占地面积小；易实现自动控制、运行管理简单且运行稳定。 The present invention combines the activated sludge method, the biofilm method and the membrane filtration method in one, wherein the hollow fiber membrane module used in the membrane filtration is used as the microbial filler of the biofilm method, and high-pressure air is introduced into the hollow fiber membrane through the fan to form a biofilm Provide dissolved oxygen and play a role in cleaning the hollow fiber membrane. The invention does not require sludge backflow, no sludge bulking problem, easy for microorganisms to survive, high treatment efficiency, good effluent quality, compact equipment, small floor area, easy automatic control, simple operation management and stable operation.
附图说明 Description of drawings
图1是本发明中膜生物水处理系统的结构示意图。 Fig. 1 is a structural schematic diagram of the membrane biological water treatment system of the present invention.
图中：1、风机，2、曝气风管阀门，3、膜组件风管阀门，4、膜组件风管，5、曝气风管，6、膜组件固定架，7、反应器池体，8、反冲洗水管阀门，9、反冲洗水泵，10、反冲洗水管，11、曝气头，12、进水管，13、进水泵，14、进水管阀门，15、排水管，16、排水泵，17、排水管阀门，18、排空阀，19、膜组件。 In the figure: 1. Fan, 2. Aeration duct valve, 3. Membrane module duct valve, 4. Membrane module duct, 5. Aeration duct, 6. Membrane module fixing frame, 7. Reactor pool , 8, backwash water pipe valve, 9, backwash water pump, 10, backwash water pipe, 11, aeration head, 12, water inlet pipe, 13, water inlet pump, 14, water inlet pipe valve, 15, drain pipe, 16, drainage Pump, 17, drain pipe valve, 18, emptying valve, 19, membrane assembly.
具体实施方式 detailed description
以下通过实施例对本发明的上述内容做进一步详细说明，但不应该将此理解为本发明上述主题的范围仅限于以下的实施例，凡基于本发明上述内容实现的技术均属于本发明的范围。 The above-mentioned contents of the present invention are described in further detail below through the embodiments, but this should not be interpreted as the scope of the above-mentioned themes of the present invention being limited to the following embodiments, and all technologies realized based on the above-mentioned contents of the present invention all belong to the scope of the present invention.
实施例 Example
一种膜生物水处理系统及方法，包括反应器池体7，反应器池体7的内侧中部通过膜组件固定架6固定有水平布置的膜组件19，膜组件19的上端处于距离反应器池体7上沿1/3处，膜组件19的下端处于距离反应器池体7上沿2/3处，膜组件19进气口通过膜组件风管4与设置于反应器池体7外侧上沿处的风机1相连，该膜组件风管4上设有膜组件风管阀门3，反应器池体7底部的曝气头11通过曝气风管5与风机1相连，该曝气风管5上设有曝气风管阀门2，膜组件19进水口通过反冲洗水管10与设置于反应器池体7外侧下沿处的反冲洗水泵9相连，该反冲洗水管10上设有反冲洗水管阀门8，膜组件19出水口通过排水管15与排水泵16相连，该排水管15上设有排水管阀门17，排水管阀门17与膜组件19之间的排水管15上设有排空管，该排空管上设有排空阀18，反应器池体7的底部通过进水管12与进水泵13相连，该进水管12上设有进水管阀门14，反应器池体7的侧壁上设有液位计，进水泵13、排水泵16、风机1和反冲洗水泵9分别与外部电缆线相连，膜组件19包括固定于膜组件固定架6上的密封腔体和设置于密封腔体之间且与密封腔体连通的中空纤维膜，该中空纤维膜的外侧管壁上附着有微生物。 A membrane biological water treatment system and method, including a reactor pool body 7, the inner middle of the reactor pool body 7 is fixed with a horizontally arranged membrane module 19 through the membrane module fixing frame 6, and the upper end of the membrane module 19 is at a distance from the reactor pool 1/3 of the upper edge of the body 7, the lower end of the membrane module 19 is at 2/3 of the distance from the upper edge of the reactor pool body 7, and the air inlet of the membrane module 19 is arranged on the outside of the reactor pool body 7 through the membrane module air duct 4 The air blower 1 along the edge is connected, and the membrane assembly air pipe 4 is provided with a membrane assembly air pipe valve 3, and the aeration head 11 at the bottom of the reactor pool body 7 is connected with the fan 1 through the aeration air pipe 5, and the aeration air pipe 5 is provided with an aeration air pipe valve 2, and the water inlet of the membrane module 19 is connected to the backwash water pump 9 arranged at the lower edge of the outer side of the reactor pool 7 through the backwash water pipe 10. The backwash water pipe 10 is provided with a backwash water pipe 10. The water pipe valve 8 and the water outlet of the membrane module 19 are connected to the drain pump 16 through the drain pipe 15. The drain pipe 15 is provided with a drain pipe valve 17, and the drain pipe 15 between the drain pipe valve 17 and the membrane module 19 is provided with an emptying valve. The emptying pipe is provided with an emptying valve 18, and the bottom of the reactor pool body 7 is connected with the water inlet pump 13 through the water inlet pipe 12. The water inlet pipe valve 14 is arranged on the water inlet pipe 12, and the side of the reactor pool body 7 A liquid level gauge is arranged on the wall, and the water inlet pump 13, the drainage pump 16, the blower fan 1 and the backwash water pump 9 are respectively connected with external cables. The hollow fiber membrane between the cavities and communicated with the sealed cavity has microorganisms attached to the outer tube wall of the hollow fiber membrane.
本发明中，反应器池体的规格为长10m、宽6m、高9m。膜组件的固定，膜组件上端距反应器池体上沿3m，膜组件下端距反应器池体上沿6m，膜组件是由深圳市恒大兴业环保科技有限公司供应的MBR75M0450FP膜组件。进水泵是由永嘉县华邦泵阀制造有限公司供应的150ZW400-25型自吸无堵塞排污泵，额定流量400m3/h，功率55kw，可将污水输入反应器池体。反冲洗水泵是由昆山奥兰克泵业制造有限公司供应的CPS-05型水泵，功率0.37kw，用于输送清水反冲洗膜组件。风机是由章丘市嘉合机械有限公司供应的罗茨风机，型号为JHSR-100，功率3-15kw，风量2.94-7.94m3/min，用于曝气供氧。排水泵是由永嘉县华邦泵阀制造有限公司供应的150ZW400-25型自吸无堵塞水泵，额定流量400m3/h，功率55kw，可将处理过的水输送出来。曝气头是由无锡市本源环保设备有限公司供应的。 In the present invention, the specification of the reactor pool body is 10m in length, 6m in width and 9m in height. For the fixing of the membrane module, the upper end of the membrane module is 3m away from the upper edge of the reactor pool, and the lower end of the membrane module is 6m away from the upper edge of the reactor pool. The membrane module is MBR75M0450FP membrane module supplied by Shenzhen Hengda Xingye Environmental Protection Technology Co., Ltd. The water inlet pump is a 150ZW400-25 self-priming non-clogging sewage pump supplied by Yongjia County Huabang Pump and Valve Manufacturing Co., Ltd., with a rated flow rate of 400m 3 /h and a power of 55kw, which can input sewage into the reactor pool. The backwash water pump is a CPS-05 water pump supplied by Kunshan Oak Pump Manufacturing Co., Ltd., with a power of 0.37kw, which is used to transport clean water backwash membrane components. The blower is a Roots blower supplied by Zhangqiu Jiahe Machinery Co., Ltd., the model is JHSR-100, the power is 3-15kw, the air volume is 2.94-7.94m 3 /min, and it is used for aeration and oxygen supply. The drainage pump is a 150ZW400-25 self-priming non-clogging pump supplied by Yongjia County Huabang Pump and Valve Manufacturing Co., Ltd., with a rated flow rate of 400m 3 /h and a power of 55kw, which can deliver treated water. The aeration head is supplied by Wuxi Benyuan Environmental Protection Equipment Co., Ltd.
膜生物水处理系统的运行过程为：首先开启进水管阀门和进水泵，污水从进水管进入反应器池体，当污水水位至距反应器池体上沿0.5m处停止进水泵并关闭进水管阀门；开启风机、曝气风管阀门和膜组件风管阀门，曝气5h后关闭曝气风管阀门，开始沉淀；沉淀1h后，同时开启反冲洗水泵和反冲洗水管阀门，反冲洗时间为15min，再开启排空阀排空膜组件中的气体后关闭风机、膜组件风管阀门、反冲洗水泵、反冲洗水管阀门和排空阀，开启排水泵和排水管阀门开始排水，至水位下降至膜组件上方0.2m处时关闭排水泵和排水管阀门停止排水，进入下一个循环。如果排水过程较长且膜组件通量下降严重，可增加反冲洗次数。 The operation process of the membrane biological water treatment system is as follows: firstly open the water inlet valve and the water inlet pump, the sewage enters the reactor tank body from the water inlet pipe, and when the sewage water level reaches 0.5m from the upper edge of the reactor pool body, stop the water inlet pump and close the water inlet pipe Valves; open the fan, aeration duct valve and membrane module duct valve, close the aeration duct valve after aeration for 5 hours, and start sedimentation; after sedimentation for 1 hour, open the backwashing water pump and backwashing water pipe valve at the same time, and the backwashing time is After 15 minutes, open the exhaust valve to exhaust the gas in the membrane module, then close the fan, membrane module air pipe valve, backwash water pump, backwash water pipe valve and emptying valve, open the drain pump and drain pipe valve to start draining, until the water level drops When it reaches 0.2m above the membrane module, turn off the drainage pump and the valve of the drainage pipe to stop the drainage, and enter the next cycle. If the drainage process is long and the flux of the membrane module drops seriously, the number of backwashing can be increased.
本发明将膜生物反应器与生物膜反应器结合，膜生物反应器采用中空纤维膜组件，同时中空纤维膜组件又作为生物膜反应器的填料，为水中微生物提供生长载体，从而形成生物膜，去除水中污染物。生物膜中的微生物以污水中的有机污染物或截留在中空纤维膜上的有机污染物为营养物质,并向膜组件中和池体中曝气，曝气的作用：一是为膜上微生物供氧；二是可防止中空纤维膜膜孔堵塞，减轻膜污染；三是为悬浮微生物供氧。本发明是利用悬浮微生物、中空纤维膜的超过滤作用和膜上微生物的新陈代谢作用使污水得到净化。本发明在强化了处理效果的基础上，还能保持两种工艺的优点，维持较好的污泥形态和微生物活性，最重要的是能达到更高的污泥减量效果。 The invention combines the membrane bioreactor with the biofilm reactor, the membrane bioreactor adopts the hollow fiber membrane module, and the hollow fiber membrane module is used as the filler of the biofilm reactor to provide the growth carrier for the microorganisms in the water, thus forming the biofilm, Remove pollutants from water. The microorganisms in the biofilm use the organic pollutants in the sewage or the organic pollutants trapped on the hollow fiber membrane as nutrients, and aerate the membrane module and the tank body. Oxygen supply; the second is to prevent the clogging of hollow fiber membrane pores and reduce membrane pollution; the third is to supply oxygen to suspended microorganisms. The invention utilizes suspended microorganisms, the superfiltration effect of the hollow fiber membrane and the metabolism of the microorganisms on the membrane to purify the sewage. On the basis of strengthening the treatment effect, the present invention can also maintain the advantages of the two processes, maintain better sludge form and microbial activity, and most importantly, can achieve higher sludge reduction effect.
以上实施例描述了本发明的基本原理、主要特征及优点，本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明原理的范围下，本发明还会有各种变化和改进，这些变化和改进均落入本发明保护的范围内。 The above embodiments have described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What are described in the above embodiments and description are only to illustrate the principles of the present invention. Without departing from the scope of the principle of the present invention, there will be various changes and improvements in the present invention, and these changes and improvements all fall within the protection scope of the present invention.
Claims (3)
- null1. a film Biological water processes system and method，It is characterized in that: this film biology water treatment system includes reactor cell body，The middle inside of reactor cell body is fixed with horizontally disposed membrane module by membrane module fixed mount，Membrane module air inlet is connected with the blower fan being arranged on the external side of reactor cell along place by membrane module airduct，This membrane module airduct is provided with membrane module airduct valve，Aeration head bottom reactor cell body is connected with blower fan by aeration airduct，This aeration airduct is provided with aeration airduct valve，Membrane module water inlet is connected with the backwash pump being arranged under the external side of reactor cell along place by backwash water pipe，This backwash water pipe is provided with backwashing water tube valve，Membrane module outlet is connected with draining pump by drain pipe，This drain pipe is provided with drain pipe valve，Drain pipe between drain pipe valve and membrane module is provided with evacuated tube，This evacuated tube is provided with exhaust-valve，The bottom of reactor cell body is connected with intake pump by water inlet pipe，This water inlet pipe is provided with water inlet pipe valve，The sidewall of reactor cell body is provided with liquidometer，Intake pump、Draining pump、Blower fan is connected with external electrical cable respectively with backwash pump；nullThe carrying out practically process of this film biology water treatment system is: first turn on water inlet pipe valve and intake pump，Sewage enters reactor cell body from water inlet pipe，When wastewater level distance reactor cell body is closed intake pump and water inlet pipe valve along 0.2-0.5m place，Open aeration airduct valve、Membrane module airduct valve and blower fan，Aeration airduct valve is closed after aeration 4-10h，Start precipitation，Precipitation 0.5-2h，It is then turned on backwashing water tube valve and backwash pump，Backwash 5-20min，Blower fan is closed after opening the gas in exhaust-valve emptying membrane module、Membrane module airduct valve、Backwash pump、Backwashing water tube valve and exhaust-valve，Opening water discharge tube valve and draining pump start draining，To reactor cell body, portion's water level decreasing closes draining pump and drain pipe valve to 0.2m place above membrane module，Enter next one circulation.
- 2. film Biological water according to claim 1 processes system and method, it is characterized in that: described membrane module includes the sealing cavity being fixed on membrane module fixed mount and the hollow-fibre membrane being arranged between sealing cavity and connecting with sealing cavity, and the outside tube wall of this hollow-fibre membrane is attached with microorganism.
- 3. film Biological water according to claim 1 processes system and method, it is characterised in that: the upper end of described membrane module is on distance reactor cell body along 1/3 place, and the lower end of membrane module is on distance reactor cell body along 2/3 place.
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Application publication date: 20160706 |