CN104829043A - Method for treatment of foodstuff wastewater based on technology of facultative anaerobic membrane bioreactor - Google Patents
Method for treatment of foodstuff wastewater based on technology of facultative anaerobic membrane bioreactor Download PDFInfo
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- CN104829043A CN104829043A CN201510183855.7A CN201510183855A CN104829043A CN 104829043 A CN104829043 A CN 104829043A CN 201510183855 A CN201510183855 A CN 201510183855A CN 104829043 A CN104829043 A CN 104829043A
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Abstract
The present invention relates to the environmental protection technology and particularly relates to a method for the treatment of foodstuff wastewater based on the technology of a facultative anaerobic membrane bioreactor. The method comprises the steps of (1) pretreating the foodstuff wastewater by means of a grating; (2) guiding the water flowing out of the grating into an oil separator; (3) guiding the water flowing out of the oil separator into a facultative anaerobic membrane bioreactor, aerating a reaction region by means of a fan and an aerating pipeline of the facultative anaerobic membrane bioreactor, controlling the aeration rate to enabling the above system in a coexistence condition of a slightly aerated state, a hypoxia state and an anaerobic state, effectively stirring the wastewater to enable the symbiosis of bacteria in the bioreactor, and simultaneously removing contaminants including C, N, P, sludge and the like. In his way, the discharge of organic remaining sludge is avoided. Compared with the existing treatment process of foodstuff wastewater, the above method is small in oxygen consumption during the treatment process, small in occupation area, easy to maintain and manage, high in contaminant degradation efficiency, and free of organic sludge discharge.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of method of facultative aerobic membrane bioreactor technical finesse food wastewater.
Background technology
Raw materials for food industry is extensive, and the course of processing will use large water gaging, therefore has a lot of refuse to discharge as the form of sewage, instant food waste water.Such wastewater through organic matter matter and suspension content high, easily corrupt, generally without large toxicity, its harm mainly makes body eutrophication, so that causes hydrocoles and fish kills, impels the organism of subaqueous deposit to produce stink, deterioration water quality, contaminate environment.
At present, food wastewater process mainly adopts biological process after carrying out pre-treatment, and bioprocess is generally Aerobic, anaerobic treatment process or combination process, comprises activated sludge process, bio-disc system, UASB, contact oxidation method etc.Traditional treatment process technical process is complicated, and can produce a large amount of excess sludges.Sludge disposal needs high expense, and excess sludge stacking can produce foul smell peculiar smell, and the sludge treating methods such as mummification, burning, landfill, compost have secondary pollution to air, underground water, soil etc.
FMBR facultative aerobic membrane bioreactor technology is a kind of Novel sewage treatment technology, is the coupling system of high performance membrane isolation technique and activated sludge process.FMBR is organically combined by membrane separation technique and biologic treating technique, not only eliminate the construction of second pond, and substantially increase solid-liquid separation efficiency, and by increase activated sludge concentration in reactor with cultural characters microorganism, improve biochemical reaction efficiency, do not discharge organic residual mud, thus solve many outstanding problems of conventional membrane bioreactor existence.
Summary of the invention
Deficiencies such as the object of this invention is to provide a kind of method utilizing facultative aerobic membrane bioreactor process food wastewater, the treating processes energy consumption overcoming existing treatment process is high, facility floor space large, maintain difficult management, contaminant degradation efficiency instability is high, organic sludge quantity discharged is large.
The invention provides a kind of method utilizing facultative aerobic membrane bioreactor process food wastewater, comprise the following steps:
(1) food wastewater is first through grid process, except oarse-grained solid substance in anhydrating;
(2) water outlet after grid process enters oil trap, removes the solid small particles and floating oil layer that suspend;
(3) oil trap water outlet enters facultative aerobic membrane bioreactor, degraded organic pollutants, water outlet up to standard.
The facultative aerobic membrane bioreactor of step (3) utilizes blower fan and aerating pipelines to carry out aeration to reaction zone, control aeration rate, system is made to be in micro-oxygen, anoxic, anaerobism deposit state, water body is also impelled effectively to be stirred, thalline symbiosis in reactor, synchronous to remove in sewage pollution substance and the mud such as C, N, P, without organic residual mud discharging.
Facultative aerobic membrane bioreactor reaction zone dissolved oxygen concentration is 0.5-1.0mg/L, and activated sludge concentration is 15000-20000 mg/L, and hydraulic detention time is 6-8h.
FMBR facultative aerobic membrane bioreactor effluent quality can reach " urban sewage reutilization urban reclaimed water water quality " (GB/T18920-2002) road-cleaning, fire-fighting, the reuse of greening water water quality standard.
Facultative aerobic membrane bioreactor utilizes blower fan and aerating pipelines to carry out aeration to reaction zone, and control aeration rate, in system, dissolved oxygen is 0.5-1.0mg/L, is in micro-oxygen, anoxic, anaerobism deposit state, also impels water body effectively to be stirred.Thalline symbiosis in facultative aerobic membrane bioreactor, synchronous to remove in sewage the pollution substances such as C, N, P.
The characteristic microorganism of active sludge mainly based on facultative anaerobe in facultative aerobic membrane bioreactor, activated sludge concentration is 15000-20000 mg/L, hydraulic detention time 6-8h, under facultative anaerobe effect, organism is broken down into the inorganic substance such as carbonic acid gas, nitrogen, phosphuret-(t)ed hydrogen/connection phosphine, water.
Introduce in facultative aerobic membrane bioreactor and bite mud bacterium, bacterium remains (i.e. mud) are thoroughly decomposed, without organic residual mud discharging, realizes sewage sludge synchronous processing.
Accompanying drawing explanation
Fig. 1 is food wastewater processing technological flow figure of the present invention.
Embodiment
Further illustrate the present invention below in conjunction with accompanying drawing and specific embodiment how to realize:
Water quality treatment parameter: handling object is bread processing waste water, and quantity discharged is about 100m
3/ d, total quantity control on emission is CODcr=1250mg/L, ammonia nitrogen=15mg/L, TP=6.5mg/L, SS=490 mg/L, vegetable and animals oils=20 mg/L.
Treating processes: bread processing waste water is first through grid process, and except oarse-grained solid substance in anhydrating, the water outlet after grid process enters oil trap, removes the solid small particles and floating oil layer that suspend; Oil trap water outlet enters FMBR facultative aerobic membrane bioreactor, degraded organic pollutants, water outlet up to standard.Facultative aerobic membrane bioreactor utilizes blower fan and aerating pipelines to carry out aeration to reaction zone, and control aeration rate, in system, dissolved oxygen is 0.5-1.0mg/L, is in micro-oxygen, anoxic, anaerobism deposit state, also impels water body effectively to be stirred.Thalline symbiosis in facultative aerobic membrane bioreactor, synchronous to remove in sewage the pollution substances such as C, N, P, organism is broken down into the inorganic substance such as carbonic acid gas, nitrogen, phosphuret-(t)ed hydrogen/connection phosphine, water.Introduce in facultative aerobic membrane bioreactor and bite mud bacterium, bacterium remains (i.e. mud) are thoroughly decomposed, without organic residual mud discharging, realizes sewage sludge synchronous processing.
Treatment effect: after the inventive method process, every average index of water outlet is CODcr=43.2mg/L, ammonia nitrogen=5mg/L, TP=0.46mg/L, SS=8 mg/L, vegetable and animals oils=0.20 mg/L.Water outlet water water quality can reach " urban sewage reutilization urban reclaimed water water quality " (GB/T18920-2002) road-cleaning, fire-fighting, the reuse of greening water water quality standard.
Claims (2)
1. a method for facultative aerobic membrane bioreactor technical finesse food wastewater, is characterised in that and comprises the following steps:
(1) food wastewater is first through grid process;
(2) water outlet after grid process enters oil trap;
(3) oil trap water outlet enters facultative aerobic membrane bioreactor;
The facultative aerobic membrane bioreactor of step (3) utilizes blower fan and aerating pipelines to carry out aeration to reaction zone, control aeration rate, system is made to be in micro-oxygen, anoxic, anaerobism deposit state, water body is also impelled effectively to be stirred, thalline symbiosis in reactor, synchronous to remove in sewage pollution substance and the mud such as C, N, P, without organic residual mud discharging.
2. the method for facultative aerobic membrane bioreactor technical finesse food wastewater according to claim 1, be characterised in that: facultative aerobic membrane bioreactor reaction zone dissolved oxygen concentration is 0.5-1.0mg/L, activated sludge concentration is 15000-20000 mg/L, and hydraulic detention time is 6-8h.
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| CN201510183855.7A CN104829043A (en) | 2015-04-20 | 2015-04-20 | Method for treatment of foodstuff wastewater based on technology of facultative anaerobic membrane bioreactor |
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| CN201510183855.7A CN104829043A (en) | 2015-04-20 | 2015-04-20 | Method for treatment of foodstuff wastewater based on technology of facultative anaerobic membrane bioreactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366876A (en) * | 2015-09-25 | 2016-03-02 | 张荣斌 | Urban industrial sewage treatment system |
| CN105502658A (en) * | 2016-01-07 | 2016-04-20 | 沈阳建筑大学 | Facultative flat sheet membrane gasification phosphorous removal device and method |
| EP3344584A4 (en) * | 2015-09-01 | 2018-07-11 | Jiangxi JDL Environmental Protection Co., Ltd. | Method and system of wastewater treatment with zero discharge of sludge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730914A (en) * | 2012-07-12 | 2012-10-17 | 江西金达莱环保研发中心有限公司 | Method for processing livestock breeding wastewater by using anoxic membrane bioreactor |
| CN202881041U (en) * | 2012-01-10 | 2013-04-17 | 安徽佳明环保科技股份有限公司 | UASB-SASS (Upflow Anaerobic Sludge Blanket-Suspended Array Surveillance System) combination system for treating food wastewater |
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2015
- 2015-04-20 CN CN201510183855.7A patent/CN104829043A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202881041U (en) * | 2012-01-10 | 2013-04-17 | 安徽佳明环保科技股份有限公司 | UASB-SASS (Upflow Anaerobic Sludge Blanket-Suspended Array Surveillance System) combination system for treating food wastewater |
| CN102730914A (en) * | 2012-07-12 | 2012-10-17 | 江西金达莱环保研发中心有限公司 | Method for processing livestock breeding wastewater by using anoxic membrane bioreactor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3344584A4 (en) * | 2015-09-01 | 2018-07-11 | Jiangxi JDL Environmental Protection Co., Ltd. | Method and system of wastewater treatment with zero discharge of sludge |
| CN105366876A (en) * | 2015-09-25 | 2016-03-02 | 张荣斌 | Urban industrial sewage treatment system |
| CN105366876B (en) * | 2015-09-25 | 2017-12-01 | 东营国安化工有限公司 | Urban industry sewage disposal system |
| CN105502658A (en) * | 2016-01-07 | 2016-04-20 | 沈阳建筑大学 | Facultative flat sheet membrane gasification phosphorous removal device and method |
| CN105502658B (en) * | 2016-01-07 | 2017-12-29 | 沈阳建筑大学 | And oxygen Flat Membrane gasification dephosphorization apparatus and its method |
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Application publication date: 20150812 |
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