CN102249484B - Shunting type dual-system sludge decrement film bioreactor and using method thereof - Google Patents
Shunting type dual-system sludge decrement film bioreactor and using method thereof Download PDFInfo
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- CN102249484B CN102249484B CN 201110126880 CN201110126880A CN102249484B CN 102249484 B CN102249484 B CN 102249484B CN 201110126880 CN201110126880 CN 201110126880 CN 201110126880 A CN201110126880 A CN 201110126880A CN 102249484 B CN102249484 B CN 102249484B
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Abstract
The invention relates to a shunting type dual-system sludge decrement film bioreactor and a using method thereof. The reactor comprises a high-concentration system and a low-concentration system. The using method comprises the following steps of: shunting clear inflow water and dirty inflow water to obtain high-concentration inflow water and low-concentration inflow water; and making the high-concentration inflow water and the low-concentration inflow water enter the high-concentration system and the low-concentration system respectively, wherein the high-concentration system is used for treating high-concentration inflow water by adopting hydrolytic acidification and an aerobic film bioreactor and the high-concentration inflow water can be drained after being treated, and the low-concentration system is used for treating low-concentration waste water by using an anaerobic film bioreactor and an aeration biofilter, and the low-concentration waste water can be recycled as reclaimed water after being treated or further prepared into purified water. According to the method, the influence of salts in the waste water on recycling of reclaimed water is avoided by shunting clear water and dirty water, the problem that higher sludge concentration cannot be maintained due to excessively low organic load of the low-concentration system is solved, the treatment cost of sludge is lowered, and the running cost is lowered; and the process disclosed by the invention is particularly suitable for industrial sludge treatment and reclaimed water recycling in dyeing and finishing, brewing enterprises and the like.
Description
Technical field
The invention belongs to waste disposal plant and use field thereof, particularly a kind of shunting type dual-system sludge decrement membrane bioreactor and using method thereof.
Background technology
Membrane bioreactor (MBR) technique is as a kind of novel, efficient water technology, have that treatment effect is good, stable effluent quality, equipment is simple, floor space is few and the advantage such as easy to operate, especially the reactor of high concentration sludge can reduce mud output, water outlet can be satisfied current and following peak demand to sewage drainage standard, become more and more stricter current of trend, sewage drainage standard at waste water reclaiming, have undoubtedly extremely strong development potentiality and market outlook.Anaerobic membrane bioreactor (AMBR) is the sewage treatment process of Anaerobic Methods in Treating and the effective combination of membrane technique.During simple employing anaerobic treatment, its effluent quality is relatively poor, and the introducing of film can replace its follow-up processing unit, by the film crown_interception, can significantly improve the reactor solid-liquid separation effect, make that in reactor, microorganism concn maintains higher level, made up preferably the low shortcoming of anaerobic treatment volumetric loading.In addition, AMBR is owing to can keep long sludge retention time, so sludge yield is low, and effluent quality is good.
MBR mainly adopts micro-filtration or large pore size ultrafiltration membrane at present, and these films have good interception function to particle, colloid in sewage, but for almost not interception of salt.Therefore, in the higher trade effluent of saltiness, even adopted the MBR Process for Effluent can't realize being back to use the industrial production workshop due to the problem of high concentration salts.The another one characteristics of MBR are to keep the interior high sludge concentration of reactor to guarantee higher organic removal rate.When the organic concentration of water inlet was low, because self metabolism of mud causes mud can not keep the high density state, MBR can only process the higher waste water of relative concentration.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of shunting type dual-system sludge decrement membrane bioreactor and using method thereof, this membrane bioreactor is simple to operate, reduce the sludge treatment expense, reduce working cost, be applicable to the industrial sewages such as dyeing and finishing, liquor-making enterprise and process and middle water reuse; Aerobic film filtration effluent water quality safety of the present invention is reliable, can reach middle water reuse water quality requirement.
A kind of shunting type dual-system sludge decrement membrane bioreactor of the present invention comprises: high concentration systems and lower concentration system, and wherein high concentration systems is comprised of high density equalizing tank, hydrolysis acidification pool and aerobic membrane bioreactor; The lower concentration system is comprised of lower concentration equalizing tank, anaerobic membrane bioreactor and BAF.
The using method of above-mentioned a kind of shunting type dual-system sludge decrement membrane bioreactor, comprise: the separation of cloudy and clear of intaking obtains high density water inlet and lower concentration water inlet, the lower concentration equalizing tank of the high density equalizing tank that high density (high salinity) water inlet and lower concentration (Low-salinity) is intake enter respectively high concentration systems and lower concentration system; All establish stirrer in hydrolysis acidification pool and anaerobic membrane bioreactor, aerobic membrane bioreactor is by the blower fan oxygen supply; Aerobic membrane bioreactor (3) but the water outlet qualified discharge; BAF (6) water outlet after sterilization can in the water reuse, or further membrane sepn making pure water.
The water quality of described lower concentration water inlet must be lower than the high density influent quality, and lower concentration water quality satisfies three grades of emission standards of integrated wastewater discharge standard (GB 8978-1996), specific conductivity＜2000 μ s/cm.
, the muddy water mixed solution of 1/3～1/4 volume in aerobic membrane bioreactor can be entered in anaerobic membrane bioreactor during higher than 8000mg/L when the sludge concentration of described aerobic membrane bioreactor.
Sludge concentration in described anaerobic membrane bioreactor can maintain the 14500-15500mg/L left and right.
MLVSS/MLSS in described anaerobic membrane bioreactor can discharge the muddy water mixed solution of 1/3～1/4 volume in reactor and carry out sludge dewatering less than 0.5 o'clock.
Can utilize respectively the pressure realization of the first suction pump and the second suction pump when the membrane flux of described aerobic membrane bioreactor and anaerobic membrane bioreactor, swabbing pressure≤the 0.05MP of aerobic membrane bioreactor, anaerobic membrane bioreactor swabbing pressure≤0.02MP.
The film rinse water of described aerobic membrane bioreactor and anaerobic membrane bioreactor enters the high density equalizing tank, and the backwashing water of BAF and sludge press filtration water enter the lower concentration equalizing tank.
What the present invention is directed to that the higher trade effluent of saliferous takes is the way of shunting of removing contamination, the density wastewater during individual curing that saliferous is higher, and low concentration wastewater is processed by another system; High salinity waste water can discharge after treatment, and Low-salinity waste water can be recycled after treatment, has solved the problem that salt is difficult to remove.The general process section that produces high concentration salts waste water also can contain a large amount of organism, can utilize so simultaneously and produce the operation that mud is kept the lower concentration system in high concentration systems, the mud of having avoided causing because organic substrates is too low in the lower concentration system can not be kept sufficiently high concentration, affect effluent quality, realized simultaneously sludge reduction.
Beneficial effect
(1) membrane bioreactor of the present invention is simple to operate, utilization is removed contamination and is shunted the impact of avoiding salt centering water reuse in waste water, the mud that utilizes simultaneously lower concentration system anaerobic membrane bioreactor that high concentration systems is produced carries out sludge anaerobic and subtracts appearanceization, reduces the sludge treatment expense; Solved simultaneously because lower concentration system sludge self metabolism causes mud can not keep the high density state, reduce working cost, and technological operation has been simple, the operating time is short.
(2) but high concentration systems water outlet qualified discharge of the present invention; Lower concentration system effluent quality is safe and reliable, can reach middle water reuse water quality requirement after sterilization, or further membrane sepn is made pure water.
(3) technique of the present invention is applicable to industrial sewages processing and the middle water reuses such as dyeing and finishing, liquor-making enterprise, has a extensive future.
Description of drawings
Fig. 1 is membrane biological reactor process schema of the present invention.
Fig. 2 is membrane biological reactor process schematic flow sheet of the present invention, 1-high density equalizing tank, the 2-hydrolysis acidification pool, the 3-aerobic membrane bioreactor, 4-lower concentration equalizing tank, 5-anaerobic membrane bioreactor, the 6-BAF, 7-agitator, 8-blower fan, 9-the first suction pump and 10-the second suction pump.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
* * weaving limited liability company produces 6500 tons of cotton yarn natural productions per year; Produce 1000 tons of knitted fabrics per year; Produce 4500000 of tricot per year.It is a textile enterprise that integrates cotton spinning, knitting, printing and dyeing, clothing.The pure and impure two bursts of waste water total amounts of factory effluent are 1000m
3/ d, concentration C OD
CrIn 550mg/L; Be saving water resource, company determines to adopt advanced membrane technique to process reuse.But for guaranteeing the work-ing life of film, must pre-treatment reach in order to take full advantage of facility, and reduce salt to the impact of reuse as far as possible; Decision is divided into two groups:
25% the dyeing waste-water of dyeing and finishing technology last stage, i.e. 250m
3The denseer water that/d almost contains whole salts is one group, and water-quality COD is about 1500mg/L; The 750m of post rinsing
3Light waste water (the COD of/d
CrAbout 300mg/l), this group is processed rear enforcement advanced treatment up to standard and reuse wherein 50%, i.e. 375m
3/ d.
Embodiment is as shown in Figure 2:
250m
3/ d high-concentration waste water all enters high concentration systems, 750m
3The light waste water of/d enters the lower concentration system.High concentration systems is by high density equalizing tank 1 (useful volume 150m
3), hydrolysis acidification pool 2 (useful volume 300m
3) and aerobic membrane bioreactor 3 (useful volume 150m
3) three pond bodies form, and establish stirrer 7 in hydrolysis pond 2, aerobic membrane bioreactor 3 is by blower fan 8 oxygen supplys, and water outlet can be discharged; The lower concentration system is by lower concentration equalizing tank 4 (useful volume 300m
3), anaerobic membrane bioreactor 5 (useful volume 1500m
3) and BAF 6 (useful volume 250m
3), three pond bodies form, and establish stirrer 7 in anaerobic membrane bioreactor 5, BAF 6 water outlets after sterilization can in the water reuse, reuse is to first, second cylinder of rinsing process section.
During higher than 8000mg/L, 1/4 muddy water mixed solution in reactor can be entered anaerobic membrane bioreactor 5, and the sludge concentrations in anaerobic biological reactor 5 can maintain the 15000mg/L left and right when the sludge concentration of aerobic membrane bioreactor 3.
1/4 muddy water mixed solution in reactor can be discharged less than 0.5 the time as the MLVSS/MLSS in anaerobic membrane bioreactor 5 and carry out sludge dewatering.
The membrane flux of aerobic membrane bioreactor 3 and anaerobic membrane bioreactor 5 can utilize respectively the pressure of the first suction pump 9 and the second suction pump 10 to realize, the swabbing pressure of aerobic membrane bioreactor 3 is not more than 0.05MP (cleaning when pressure carries out film greater than 0.05MP), and anaerobic membrane bioreactor 5 swabbing pressures are not more than 0.02MP (cleaning when pressure carries out film greater than 0.02MP).
The film rinse water of aerobic membrane bioreactor 3 and anaerobic membrane bioreactor 5 enters high density and regulates 1 pond, and BAF 6 backwashing waters and sludge press filtration water enter lower concentration equalizing tank 4.
Claims (8)
1. shunting type dual-system sludge decrement membrane bioreactor is characterized in that comprising: high concentration systems and lower concentration system, and wherein high concentration systems is comprised of high density equalizing tank (1), hydrolysis acidification pool (2) and aerobic membrane bioreactor (3); The lower concentration system is comprised of lower concentration equalizing tank (4), anaerobic membrane bioreactor (5) and BAF (6); Described high density equalizing tank (1) is connected with hydrolysis acidification pool (2), and described hydrolysis acidification pool (2) is connected with aerobic membrane bioreactor (3); Described lower concentration equalizing tank (4) is connected with anaerobic membrane bioreactor (5), and described anaerobic membrane bioreactor (5) is connected with BAF (6).
2. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor as claimed in claim 1, comprise: the separation of cloudy and clear of intaking obtains high density water inlet and lower concentration water inlet, the lower concentration equalizing tank (4) of the high density equalizing tank (1) that high density water inlet and lower concentration is intake enter respectively high concentration systems and lower concentration system; All establish stirrer (7) in hydrolysis acidification pool (2) and anaerobic membrane bioreactor (5), aerobic membrane bioreactor (3) is by blower fan (8) oxygen supply; The water outlet energy qualified discharge of aerobic membrane bioreactor (3); BAF (6) water outlet is water reuse in energy after sterilization, or further membrane sepn is made pure water.
3. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor according to claim 2, it is characterized in that: the water quality of described lower concentration water inlet is lower than the water quality of high density water inlet, and lower concentration water quality satisfies three grades of emission standards of integrated wastewater discharge standard GB 8978-1996, specific conductivity＜2000 μ s/cm.
4. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor according to claim 2, it is characterized in that: when the sludge concentration of described aerobic membrane bioreactor (3) during higher than 8000mg/L, the muddy water mixed solution of 1/3～1/4 volume in aerobic membrane bioreactor (3) is entered in anaerobic membrane bioreactor (5).
5. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor according to claim 2 is characterized in that: the sludge concentration in described anaerobic membrane bioreactor (5) maintains 14500-15500mg/L.
6. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor according to claim 1, it is characterized in that:, the muddy water mixed solution of 1/3～1/4 volume in reactor is discharged carry out sludge dewatering less than 0.5 the time as the MLVSS/MLSS in described anaerobic membrane bioreactor (5).
7. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor according to claim 1, it is characterized in that: the membrane flux of described aerobic membrane bioreactor (3) and anaerobic membrane bioreactor (5) utilizes respectively the pressure of the first suction pump (9) and the second suction pump (10) to realize, swabbing pressure≤the 0.05MPa of aerobic membrane bioreactor (3) wherein, anaerobic membrane bioreactor (5) swabbing pressure≤0.02MPa.
8. the using method of a kind of shunting type dual-system sludge decrement membrane bioreactor according to claim 1, it is characterized in that: the film rinse water of described aerobic membrane bioreactor (3) and anaerobic membrane bioreactor (5) enters high density equalizing tank (1), and the backwashing water of BAF (6) and sludge press filtration water enter lower concentration equalizing tank (4).
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| CN104609554A (en) * | 2015-01-12 | 2015-05-13 | 国家电网公司 | Purification device and method for reclaiming and reusing breeding wastewater |
| CN107827325A (en) * | 2017-12-07 | 2018-03-23 | 中国科学院生态环境研究中心 | Confined space sewage disposal system and method |
| CN107840450A (en) * | 2017-12-08 | 2018-03-27 | 天津大学 | A kind of system and method using Membrane Bioreactor for Wastewater Treatment Membrane cleaning waste water |
| CN117800480A (en) * | 2024-01-02 | 2024-04-02 | 深圳格立菲环境科技有限公司 | Sewage advanced treatment system and method based on ozone catalytic oxidation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117259A (en) * | 2006-07-31 | 2008-02-06 | 中国石油化工股份有限公司 | Oil refinery sewage treatment and reusing process system and operation method thereof |
| CN101229938A (en) * | 2008-01-11 | 2008-07-30 | 哈尔滨工业大学 | Method for controlling or alleviating membrane pollution of membrane bioreactor by regulating operation condition |
| CN201458891U (en) * | 2009-05-11 | 2010-05-12 | 上海华强环保设备工程有限公司 | Integration device for processing and recycling electroplating wastewater |
| CN201817345U (en) * | 2010-03-31 | 2011-05-04 | 大连善水德水务工程有限责任公司 | Normal water reuse and direct drinking water integrated supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7713417B2 (en) * | 2007-03-16 | 2010-05-11 | Envirogen Technologies, Inc. | Method for wastewater treatment with resource recovery and reduced residual solids generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117259A (en) * | 2006-07-31 | 2008-02-06 | 中国石油化工股份有限公司 | Oil refinery sewage treatment and reusing process system and operation method thereof |
| CN101229938A (en) * | 2008-01-11 | 2008-07-30 | 哈尔滨工业大学 | Method for controlling or alleviating membrane pollution of membrane bioreactor by regulating operation condition |
| CN201458891U (en) * | 2009-05-11 | 2010-05-12 | 上海华强环保设备工程有限公司 | Integration device for processing and recycling electroplating wastewater |
| CN201817345U (en) * | 2010-03-31 | 2011-05-04 | 大连善水德水务工程有限责任公司 | Normal water reuse and direct drinking water integrated supply system |
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