CN205328793U - Formula sewage treatment plant is used to MABR and MBR antithetical couplet - Google Patents
Formula sewage treatment plant is used to MABR and MBR antithetical couplet Download PDFInfo
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- CN205328793U CN205328793U CN201520402928.2U CN201520402928U CN205328793U CN 205328793 U CN205328793 U CN 205328793U CN 201520402928 U CN201520402928 U CN 201520402928U CN 205328793 U CN205328793 U CN 205328793U
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Abstract
The utility model belongs to the technical field of sewage treatment, a formula sewage treatment plant is used to MABR and MBR antithetical couplet is disclosed, include the processing unit in advance who follows the sewage flow direction and set gradually, MABR unit and MBR unit, and with the anti - flushing unit that matches of MBR unit. Its control method is disclosed simultaneously. The utility model discloses fully combined the advantage of two kinds of membrane reactors, can fine realization nitrogen and phosphorus removal. This is that the utilization ratio of oxygen is very high, almost can reach 100% owing to adopt still aeration in the MABR pond. Because the mass transfer scope of oxygen is very little, the aquatic mainly has denitrifying bacteria and the denitrification gathers the phosphorus fungus, accomplishes the nitrate denitrification and releases the phosphorus process, has reinforceed next stage nitrogen and phosphorus removal's performance. After getting into aerobic MBR pond, remaining inferior nitre nitrogen in aquatic and ammonia nitrogen are further got rid of to the aerobic bacteria, and good oxygen gathers the phosphorus fungus and accomplishes dephosphorization work. Through the processing in MABR earlier stage, MBR's volumetric loading has been reduced.
Description
Technical field
This utility model relates to technical field of sewage, particularly relates to a kind of MABR and MBR combined type sewage-treatment plant。
Background technology
As shown in Figure 1, membrane aerated bioreactor (is generally called for short MABR) and is a kind of type of membrane bioreactor, this reactor is a kind of by oxygenation in the hollow-fibre membrane cavity 100 of hydrophobic, air-permeability, oxygen and pollutant are formed about concentration difference at biomembrane, centered by film chamber, both respectively diffusions incorgruous with ecto-entad from inside to outside, by the metabolic consumption dissolved oxygen of microorganism in biomembrane and make the organic pollution in sewage obtain a kind of sewage disposal technology of degraded。MABR system removes the process of pollutant can be divided into following four steps: first, pollutant in water body react with the anaerobe in current, a part of phosphate is adsorbed, itrogenous organic substance is degraded to ammonia nitrogen, second, pollutant after degraded are with current and biomembrane making contact, under concentration difference drives, to biological face diffusion, oxygen is spread to outside by film intracavity simultaneously；3rd, pollutant are degraded to nitrate NO by metabolism by aerobic bacteria or double oxygen bacterium in biomembrane further3 -, nitrite NO2 -Deng；4th, the pollutant after secondary degraded are again introduced into anaerobic zone with current, and nitrate, nitrite after conversion are reduced into N2, release reaches efficiencies of nitrogen removal。This reactor anoxia and coexisting of anaerobic environment also make Denitrifying Phosphate Accumulating Organisms be enriched with, and go back part that can be removed phosphorus while denitrogenation。
When bubble-free aeration avoids tradition aeration, in sewage, volatile substances such as toluene, phenol enter air with bubble and to environment, will not produce foam due to the existence of surfactant simultaneously。By foamless oxygen-supplying, oxygen transfer efficiency is greatly improved, and almost can reach 100%, and operating cost also can reduce。Meanwhile, gas-liquid two-phase is using film as boundary, and the control of aerating system can be more flexible。
At present this reactor Problems existing is exactly MABR when being used alone, although there are some researches show that reactor can carry out nitrification and denitrification simultaneously, but phosphor-removing effect is not good。
Film-separation biological reactor (MBR) is a kind of new and effective sewage treatment process combined with membrane filtration technique by biologic treating technique。It is to replace traditional biologic treating technique end second pond with membrane module, makes maintenance high activity sludge concentration in bioreactor, improves biological treatment organic loading, by keeping low sludge loading to reduce surplus sludge volume。When continuous aeration, the aerobic bacteria in activated sludge is to a pending organic pollution part for autophage, and a part is degraded to small-molecule substance and is removed。The wastewater effluent antibacterial that processes through membrane biological reactor process, float and turbidity are close to zero, it is also possible to retain the biological pollutants such as fecal coliform, can direct reuse after water outlet after process is sterilized。
MBR technique completes the removal to pollutant and substantially divides as follows: first, the sewage entering MBR reactor directly contacts with activated sludge, continuous print aeration is not only continuously aerobic bacteria oxygenation in granule sludge, also increasing the contact-impact probability of pollutant and antibacterial, aerobic bacteria carries out consuming using pollutant as the nutrient substance needed for own metabolism and degrades；Second, under the swabbing action producing water pump, the water after process is discharged by the micropore on membrane module, and granule sludge remains in and reacts in pond, and this is likely to result in the accumulation of nitrifier, makes reactor adapted process high ammonia-nitrogen wastewater。There are some researches show, process Fang Ming, MBR reactor at high ammonia-nitrogen wastewater and can reach good treatment effect。
But the utilization rate of oxygen is too low when being single use MBR, most oxygen is diffused in air by bubble, and aerating system energy consumption is high。Only the oxygen of trace is utilized by Institute of Micro-biology, foam is easily produced when waste water has surfactant, not easily remove, and due to the raising of sludge concentration in Aeration tank, the problem that can be frequently present of again fouling membrane in actual moving process, the shortcomings such as needing frequent rinsing membrane module, the life-span that therefore can there is again film is short, and maintenance cost is high。
Utility model content
The purpose of this utility model is for the technological deficiency existed in prior art, and provides a kind of MABR and MBR combined type sewage-treatment plant and processing method thereof。
Be the technical scheme is that by realizing the purpose of this utility model
A kind of MABR and MBR combined type sewage-treatment plant, including the pretreatment unit set gradually along drainage flow direction, MABR unit and MBR unit, and the backwash unit mated with described MBR unit, wherein said MABR unit includes cell body, immersion is fixedly installed on the hydrophobic, air-permeability micropore MABR membrane module in described cell body or breathability densification MABR membrane module, and connect with described MABR membrane module aerating system；
Described MBR unit includes cell body, and immersion is arranged on the hydrophilic microporous MBR membrane module in described cell body, is arranged on the aeration devices bottom described cell body and discharge pipeline, and is serially connected in the water-delivery pump on the water producing pipe of described MBR membrane module。
Described pretreatment unit is the grid, regulating reservoir and the hair filter that set gradually, or regulating reservoir and hair filter。
Described backwash unit include connecting with water-delivery pump outlet in order to store or buffer memory produces the water tank of water, the backwash water inlet branch road that controlled described water tank can be connected with water-delivery pump water inlet, and can the controlled backwash branch road that water-delivery pump outlet is connected with water producing pipe。
Described aerating system includes the air inlet pipe of the air compressor machine gas outlet described in air compressor machine, connection to one end, film chamber of described MABR membrane module, it is serially connected in the gas flowmeter in described air inlet pipe, Pressure gauge and air inlet electromagnetic valve, and the escape pipe connected with the film chamber other end and the relief valve being serially connected on described escape pipe。
A kind of processing method adopting sewage-treatment plant, comprises the following steps:
1) waste water processed through pretreatment unit is introduced in MABR reaction tank, by aerating system with the form of foamless oxygen-supplying to the film intracavity aeration of MABR membrane module, oxygen spreads from inside to outside under the driving of concentration difference, for being attached to the microorganism oxygen supply on the membranous wall of MABR membrane module, MABR membrane module and near zone is made to be formed aerobic, double oxygen, three levels of anoxia, realize aerobic bacteria, oxygen bacterium of holding concurrently coexists with anaerobe and gathering denitrifying polyP bacteria, part nitrate nitrogen is removed also by denitrification while organics removal and ammonia nitrogen, enhance next stage MBR denitrogenation dephosphorizing performance, operationally, general aeration pressure is adjusted to below aeration film bubble point used and close to bubble point, PH controls 6.5～8.5, hydraulic detention time controls when about 8～15h, reactor for treatment effect reaches optimum state；
2) MBR reaction tank is entered through the MABR waste water processed, aeration is being carried out at the bottom of pond, remaining organic carbon in water on last stage, nitrate nitrogen, nitrite nitrogen and phosphate process of aerobic bacteria in activated sludge are removed further, last under MBR membrane module crown_interception, sewage obtains final purification。The experiment proved that, in this stage, by regulating, aeration control dissolved oxygen makes in this pond Dissolved Oxygen concentration Control control 7～8.5 at 3.5～5.5mg/L, PH, hydraulic detention time controls in 5～15h, sludge concentration when about 5000～10000mg/L, and reactor for treatment effect reaches optimum state。
Described sewage is the high nitrogen phosphorus waste water of sanitary sewage and biochemical degradation。
Compared with prior art, the beneficial effects of the utility model are:
1, this utility model fully combines the advantage of two kinds of membrane reactors, can well realize denitrogenation dephosphorizing。This is that the utilization rate of oxygen is significantly high, almost can reach 100% owing to adopting bubble-free aeration in MABR pond。Owing to the mass transfer scope of oxygen is only small, water is primarily present denitrifying bacterium and Denitrifying Phosphate Accumulating Organisms, completes nitrate denitrification and release phosphorus process, enhancing the performance of next stage denitrogenation dephosphorizing。After entering aerobic MBR pond, aerobic bacteria removes nitrite nitrogen and the ammonia nitrogen of residual in water further, and aerobic phosphorous accumulating bacterium completes dephosphorization work。Process by MABR early stage, decreasing the volumetric loading of MBR, volumetric loading reduces, and corresponding energy consumption, material consumption, depreciation etc. all can reduce accordingly, and double; two film processing unit substantially increases effluent quality, processing water can carry out reuse directly as non-municipal usage of drinking。
2, MABR and MBR reactor coupling, the link of sludge reflux can be saved, deposit this is because the aerobic-anaerobic of MABR own is double, synchronous nitration and denitrification can be realized, and the MBR effect of damming efficiently ensure that the stable existence of high-concentration activated sludge in pond, sludge concentration may be up to 12000mg/L, and this also makes the yield of excess sludge little, saves Treatment of Sludge expense。
3, eliminate multiple preprocessing unit, save floor space, saved capital cost and processed energy consumption。
4, can adopting Automated condtrol, operation, convenient management, operating cost is low, and effluent quality is good。
Accompanying drawing explanation
Fig. 1 show the structure function schematic diagram of MABR；
Fig. 2 show the structural representation of MABR and MBR combined type sewage-treatment plant of the present utility model。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail。Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model。
As in figure 2 it is shown, MABR and MBR combined type sewage-treatment plant of the present utility model, including the pretreatment unit set gradually along drainage flow direction, MABR unit and MBR unit, and the backwash unit for MBR unit backwash。Specifically, described pretreatment unit is the grid, regulating reservoir and the hair filter that set gradually, or regulating reservoir and hair filter。
Described MABR unit includes cell body 1, and immersion is fixedly installed on the hydrophobic, air-permeability micro porous hollow MABR membrane module in described cell body or breathability densification hollow MABR membrane module 3 and the aerating system connected with described MABR membrane module。In MABR cell body, it is provided with the multiple deflectors 5 guiding pending lower circuitous flow waterborne simultaneously, described MABR membrane module is arranged in correspondence with in point pond being partitioned into by deflector, sewage through pretreatment enters in cell body through control valve 13 under the effect of pump 7, in actual production, water yield is generally large, when multiple MABR membrane module is set, if deflector does not have slough, and microorganism is more thorough to process organic in sewage。Meanwhile, deflector may also be arranged in MBR cell body。
Described aerating system includes the air inlet pipe of the air compressor machine gas outlet described in air compressor machine 9, connection to one end, film chamber of described MABR membrane module, it is serially connected in the gas flowmeter 11 in described air inlet pipe, Pressure gauge 12 and air inlet electromagnetic valve 10, and the escape pipe connected with the film chamber other end and the relief valve 14 being serially connected on described escape pipe。
Described MBR unit includes cell body 2, and immersion is arranged on the hydrophilic Breathable microporous MBR film membrane module 4 in described cell body, and is arranged on the aeration devices bottom described cell body and discharge pipeline, and is serially connected in the water-delivery pump on the water producing pipe of described MBR membrane module。Preferably, the described cell body of MABR unit and the cell body of MBR are disposed adjacent, it is only necessary to the training wall 6 leaving passage with bottom makes a distinction, connect bottom the cell body of two unit, sewage case processes direction free-flow, effectively reduces the pump housing and uses, saves electric power。
Described and MBR cell body aeration devices includes air compressor machine 8, is connected air compressor machine and the aerated conduit as aeration devices in MBR pond and the perforated pipe going deep into MBR film unit bottom through pool wall, and described perforated pipe is being installed Duct fixing clamp and connected with aerated conduit at the bottom of pond。Described aerated conduit is provided with gas flowmeter 17, controls valve 16 and Pressure gauge 15。MABR and MBR is respectively provided with independent aerating system, can individually provide for each oxygen consuming amount, effectively control the maximization of integral device, break the whole up into parts and be beneficial to energy-saving and emission-reduction。
Described backwash unit include connecting with water-delivery pump 28 outlet in order to store or buffer memory produces the water tank 27 of water, controlled described water tank can be connected the backwash water inlet branch road connected with drainage pump water inlet, and can the controlled backwash branch road that water-delivery pump outlet is connected with water producing pipe, specifically, namely by valve 18,19,21,23,24,26,29, and check-valves 22 comes water production control and the switching of backwash branch road, it is provided with piezometer 20 and 25 to carry out pressure monitor simultaneously, this similarly to the prior art, in this not reinflated description。
MABR and MBR integral type sewage of the present utility model processes device, achieve the efficient combination of membrane separation technique and biologic treating technique, influent load change there is is the good suitability, also improves the efficiency of oxidation operation and nitrification and denitrification simultaneously, reduce power consumption。It is simple to operate, it is easy to accomplish automatically control, and manages convenient。Two kinds of films are applied to a technique, with hydrophobic hollow-fibre membrane for biofilm carrier, the second pond in traditional handicraft and conventional absorbtion filter element is replaced with hydrophilic micro-filtration membrane, the suspended material in waste water, colloidal substance, microorganism species and the water purified is made to be completely separated, making effluent quality high-quality more with stable, the process of double; two films also ensure that the effect of water outlet。Simultaneously in combination with, hydraulic detention time can shorten, and while reducing energy consumption, treatment effeciency is improved, and the advantages such as additional membrane module floor space is little, easy to operate, flexible operation make this technology have good application prospect。
Adopt device water treatment technology of the present utility model as follows:
1) waste water processed through pretreatment unit is introduced in MABR reaction tank, by aerating system with the form of foamless oxygen-supplying to the film intracavity aeration of MABR membrane module, oxygen spreads from inside to outside under the driving of concentration difference, for being attached to the microorganism oxygen supply on the membranous wall of MABR membrane module, MABR membrane module and near zone is made to be formed aerobic, double oxygen, three levels of anoxia, achieve aerobic bacteria, oxygen bacterium of holding concurrently coexists with anaerobe and gathering denitrifying polyP bacteria, part nitrate nitrogen is removed also by denitrification while organics removal and ammonia nitrogen, enhance next stage MBR denitrogenation dephosphorizing performance。Operationally, aeration pressure being generally adjusted to below aeration film bubble point used and close to bubble point, PH controls 6.5～8.5, hydraulic detention time controls when about 8～15h, and reactor for treatment effect reaches optimum state；
2) MBR reaction tank is entered through the MABR waste water processed, aeration is being carried out at the bottom of pond, remaining organic carbon in water on last stage, nitrate nitrogen, nitrite nitrogen and phosphate process of aerobic bacteria in activated sludge are removed further, last under MBR membrane module crown_interception, sewage obtains final purification。The experiment proved that, in this stage, by regulating, aeration control dissolved oxygen makes in this pond Dissolved Oxygen concentration Control control 7～8.5 at 3.5～5.5mg/L, PH, hydraulic detention time controls in 5～15h, sludge concentration when about 5000～10000mg/L, and reactor for treatment effect reaches optimum state。
Wherein, described sewage is suitable for sanitary sewage and can the waste water of biochemical treatment containing high nitrogen phosphorus etc.。
Embodiment 1
The MABR-MBR Integral waste water adopting structure as shown in Figure 2 processes device, passes into pretreated sanitary sewage, and what sanitary sewage adopted is the shower waste of certain bath center, its water quality index is: COD:140mg/L, NH3-N:42mg/L, SS:45mg/L, LAS:6.2mg/L, MABR membrane module material is Kynoar (PVDF), internal diameter 0.4mm, external diameter 0.45mm, MBR membrane module material is identical with MABR film, aperture is 0.1um, and membrane flux is 16L/ (m2H)。First with intake pump, pretreated water is squeezed into MABR pond, simultaneously to MABR film cavity aeration, aeration is pressed in about 0.07～0.1MPa, PH controls 7.5～8, hydraulic detention time controls at 8h, water after MABR film processes enters MBR pond by training wall, aeration is being carried out at the bottom of pond, regulate aeration rate make Dissolved Oxygen concentration Control at 3～4mg/L, PH 7～8, hydraulic detention time controls in 6h, sludge concentration at 4500～5500mg/L, discharge pipeline is set in the bottom of MBR reactor, by excess sludge periodic exhaustion。Water quality after water outlet is: COD: < 20mg/L, NH3-N: < 3mg/L, SS: < 7mg/L, LAS: < 0.2mg/L, the clearance of each index is: COD:85%, NH3-N:92%, SS:84%, LAS:96%。Effluent quality reaches the water quality requirement in " urban sewage reutilization urban reclaimed water water quality " (GB/T18920-2002)。
Embodiment 2
Process device identical with embodiment 1。Water inlet adopts the Water in landscape lake that pretreated eutrophication is serious, and its water quality index is COD:83mg/L, TP:0.23mg/L, TN:13mg/L, NH3-N:0.8mg/L。Run operating condition basically identical with embodiment 1: MABR pond, aeration is pressed in about 0.07～0.1MPa, PH and controls 7.5～8.5, and hydraulic detention time controls at 8h；MBR pond, regulate aeration rate make Dissolved Oxygen concentration Control at 3.5～4.5mg/L, PH 7.5～8, hydraulic detention time controls in 6h, sludge concentration at 4000～5000mg/L。Under room temperature, after plant running is stable, its effluent index is COD: < 11mg/L, TP: < 0.08mg/L, TN: < 2.3mg/L, NH3-N: < 0.2mg/L。
Embodiment 3
Process device identical with embodiment 1。Water inlet adopts pretreated corn starch wastewater, and its water quality index is COD:8350mg/L, NH3-N:13mg/L, TN:210mg/L, SS:2200mg/L, PO4-: 48mg/L, PH:3.4。Run operating condition basically identical with embodiment 1 except following: MABR pond, aeration is pressed in about 0.07～0.1MPa, adds NaOH and makes PH control 7.5～8.5, and hydraulic detention time controls at 12h；MBR pond, Dissolved Oxygen concentration Control at 3.5～4mg/L, PH 7.5～8, hydraulic detention time controls in 9h, sludge concentration at 6000～9000mg/L。After plant running is stable, its effluent index is COD: < 50mg/L, NH3-N: < 2.3mg/L, TN: < 20mg/L, SS: < 30mg/L, PO4-: < 2mg/L, PH:7.1。
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model。
Claims (4)
1. a MABR and MBR combined type sewage-treatment plant, it is characterized in that, including the pretreatment unit set gradually along drainage flow direction, MABR unit and MBR unit, and the backwash unit mated with described MBR unit, wherein, described MABR unit includes cell body, immersion is fixedly installed on the hydrophobic, air-permeability micropore MABR membrane module in described cell body or breathability densification MABR membrane module, and connect with described MABR membrane module aerating system, described MBR unit includes cell body, immersion is arranged on the hydrophilic microporous MBR membrane module in described cell body, it is arranged on the aeration devices bottom described cell body and discharge pipeline, and it is serially connected in the water-delivery pump on the water producing pipe of described MBR membrane module。
2. sewage-treatment plant as claimed in claim 1, it is characterised in that described pretreatment unit is the grid, regulating reservoir and the hair filter that set gradually, or regulating reservoir and hair filter。
3. sewage-treatment plant as claimed in claim 1, it is characterized in that, described backwash unit include connecting with water-delivery pump outlet in order to store or buffer memory produces the water tank of water, the backwash water inlet branch road that controlled described water tank can be connected with water-delivery pump water inlet, and can the controlled backwash branch road that water-delivery pump outlet is connected with water producing pipe。
4. sewage-treatment plant as claimed in claim 1, it is characterized in that, described aerating system includes the air inlet pipe of the air compressor machine gas outlet described in air compressor machine, connection to one end, film chamber of described MABR membrane module, it is serially connected in the gas flowmeter in described air inlet pipe, Pressure gauge and air inlet electromagnetic valve, and the escape pipe connected with the film chamber other end and the relief valve being serially connected on described escape pipe。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113044985A (en) * | 2021-04-12 | 2021-06-29 | 波塞冬(江苏)新材料科技有限公司 | Biological fermentation wastewater treatment process |
| CN113429068A (en) * | 2021-06-29 | 2021-09-24 | 安徽川清清环境科技有限公司 | EHBR (anaerobic-aerobic biological coupling) membrane water quality purification device for riverway |
| CN114380454A (en) * | 2021-11-15 | 2022-04-22 | 长沙工研院环保有限公司 | TMBR sewage treatment process based on MABR and MBR |
| CN115417503A (en) * | 2022-10-09 | 2022-12-02 | 碧水源膜技术研究中心(北京)有限公司 | Sewage treatment device and sewage treatment method |
-
2015
- 2015-06-11 CN CN201520402928.2U patent/CN205328793U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113044985A (en) * | 2021-04-12 | 2021-06-29 | 波塞冬(江苏)新材料科技有限公司 | Biological fermentation wastewater treatment process |
| CN113429068A (en) * | 2021-06-29 | 2021-09-24 | 安徽川清清环境科技有限公司 | EHBR (anaerobic-aerobic biological coupling) membrane water quality purification device for riverway |
| CN114380454A (en) * | 2021-11-15 | 2022-04-22 | 长沙工研院环保有限公司 | TMBR sewage treatment process based on MABR and MBR |
| CN115417503A (en) * | 2022-10-09 | 2022-12-02 | 碧水源膜技术研究中心(北京)有限公司 | Sewage treatment device and sewage treatment method |
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Granted publication date: 20160622 Termination date: 20170611 |