CN103693740A - Two-section propelling type anaerobic-facultative-aerobiotic reaction pool and sewage treatment method thereof - Google Patents

Two-section propelling type anaerobic-facultative-aerobiotic reaction pool and sewage treatment method thereof Download PDF

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Publication number
CN103693740A
CN103693740A CN201310751259.5A CN201310751259A CN103693740A CN 103693740 A CN103693740 A CN 103693740A CN 201310751259 A CN201310751259 A CN 201310751259A CN 103693740 A CN103693740 A CN 103693740A
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zone
aerobic
waste water
anaerobic
area
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CN201310751259.5A
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CN103693740B (en
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周宁
宇秉勇
张源
李利敏
张宇
许淑娟
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沈阳化工研究院有限公司
沈阳化工研究院设计工程有限公司
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Abstract

The invention belongs to the technical field of waste water biological treatment and particularly relates to a two-section propelling type anaerobic-facultative-aerobiotic reaction pool and a sewage treatment method thereof. An anaerobic zone, a facultative zone and an aerobiotic zone are sequentially arranged on the reaction pool from the inner part to the outer part, a waste-water-in pipe is arranged at the top of the anaerobic zone of the reaction pool, and a water-out pipe is arranged at the top of the aerobiotic zone of the reaction pool. A plurality of micro-porous aerators are arranged on the bottoms of both the facultative zone and the aerobiotic zone. Diversion walls are respectively arranged between the anaerobic zone and the facultative zone, and between the facultative zone and the aerobiotic zone along the radial direction, an anaerobic zone preset opening and a return pump are respectively arranged at the two sides of the diversion wall between the anaerobic zone and facultative zone, and a facultative zone preset opening and a return pump are respectively arranged on the two sides of the diversion wall between the facultative zone and the aerobiotic zone. A liquid propeller is arranged in the anaerobic zone. Due to the arrangement of the diversion wall between the facultative zone and the aerobiotic zone, waste water can run in a way of being propelled by self gravity, energy consumption can be effectively saved, and the treatment effect can be effectively improved. The defects in the prior art are overcome, and a technology which has the advantages of simplicity, low energy consumption and great treatment effect is provided.

Description

A kind of two sections of pulling flow type anaerobism-double oxygen-aerobic reaction pond and the method for disposing of sewage thereof
Technical field
The invention belongs to biological wastewater treatment technology field, the method that is specifically related to a kind of two sections of pulling flow type anaerobism-double oxygen-aerobic reaction pond and disposes of sewage.
Background technology
Anaerobism-oxygen-the aerobic method of holding concurrently is a kind of conventional sewage treatment process, anaerobism-anoxic-aerobic process is when in removing sewage, organic carbon pollutes (BOD), can also effectively remove nitrogen and phosphorus pollution in sewage, for reusing sewage and resource utilization have been opened up new approach, it with after conventional activated sludge process second-stage treatment, carry out again three grades of materializations and process and compare, not only investment and running cost are low, and without a large amount of reluctant chemical sludges, have good environmental benefit and economic benefit.Conventional anaerobism-anoxic-aerobic process Jiang Sange workshop section divides and is arranged, but this pond body carries out transport pipe that internal recycle need to be longer and larger energy consumption when denitrogenation dephosphorizing between each workshop section, each workshop section of existing anaerobism-anoxic-aerobic process is for completely hybrid simultaneously, waste water enters in reaction tank bottom, under the lifting stirring action of surface aeration machine, fully mix with full pond mixed solution, thereby full pond water quality is substantially even, can not bring into play processing power completely, processing efficiency is compared not high.For this phenomenon, this patent carries out technological transformation to biochemistry pool, rectification wall is set reaction process is become to pulling flow type, thereby waste water is intake by head end in each interval of biochemistry pool, with Promoting Form, along the pond length direction whole reaction zone of flowing through, by outlet water at tail end, fully improve the contact reacts time, improve processing efficiency, a kind of two sections of energy-efficient pulling flow type anaerobism-anoxic-aerobic process can be provided.
Summary of the invention
The technical problem to be solved in the present invention is to overcome deficiency in existing technique, the method that two sections of pulling flow type anaerobism-double oxygen-aerobic reaction pond is provided and disposes of sewage, by novelty rectification wall is set, traditional technology is changed into pulling flow type by fully mixing (water inlet mixes with full pond mixed solution) (intakes from head end, outlet water at tail end), can reduce energy consumption, improve treatment effect.
In order to achieve the above object, the present invention adopts following scheme:
Two sections of pulling flow type anaerobism-oxygen-aerobic reaction ponds of holding concurrently, are extremely followed successively by anaerobic zone, aerobic area and aerobic zone outward in reaction tank; Wastewater inlet pipe is located at the top, anaerobic zone of reaction tank, and rising pipe is located at the top, aerobic zone of reaction tank; Aerobic area and bottom, aerobic zone are equipped with a plurality of micro-hole aerators; Between anaerobic zone and aerobic area, aerobic area and aerobic zone, be radially respectively equipped with rectification wall, anaerobic zone reserved opening and reflux pump are established respectively in rectification wall both sides between anaerobic zone and aerobic area, and aerobic area reserved opening and reflux pump are established respectively in the rectification wall both sides between aerobic area and aerobic zone; Liquid impellers is set in anaerobic zone.
The bottom adjacent with rectification wall, described anaerobic zone is provided with anaerobic zone reserved opening, and the bottom adjacent with rectification wall, aerobic area is provided with aerobic area reserved opening.
Between described aerobic area and anaerobic zone, aerobic zone and aerobic area body of wall, be equipped with under liquid reflux pump carry out waste water from aerobic area, aerobic zone refluxes to anaerobic zone.
Further, reactor comprises the anaerobic zone that is concentric(al) circles and arranges to outer ring successively, aerobic area and aerobic zone, rectification wall is set respectively between aerobic area and aerobic zone, at top, anaerobic zone, be provided with wastewater inlet pipe, top, aerobic zone is provided with rising pipe, liquid impellers is set in anaerobic zone, in aerobic area, bottom, aerobic zone is provided with a plurality of micro-hole aerators, the latter end of aerobic area wastewater streams warp be provided with under liquid reflux pump by aerobic area effluent recycling to anaerobic zone, the latter end of aerobic zone wastewater streams warp be provided with under liquid reflux pump by aerobic zone effluent recycling to aerobic area entrance, described anaerobic zone reserved opening is arranged on anaerobic zone and rectification wall adjacent base position, waste water enters aerobic area through anaerobic zone reserved opening, aerobic area reserved opening is arranged on aerobic area and rectification wall adjacent base position, waste water enters aerobic zone through aerobic area reserved opening.Rectification wall arranges respectively between aerobic area and aerobic zone, makes fully mixing change pulling flow type into; Waste water is plug-flow operation under rectification wall and the effect of liquid self gravitation after the water outlet of pre-buried mouthful of anaerobic zone, plug-flow operation under rectification wall and the effect of liquid self gravitation after the water outlet of pre-buried mouthful of waste water Jian Yangyang district.
Described rectification wall arranges respectively between aerobic area and aerobic zone, makes fully mixing change pulling flow type into; Waste water is plug-flow operation under rectification wall and the effect of liquid self gravitation after the water outlet of pre-buried mouthful of anaerobic zone, plug-flow operation under rectification wall and the effect of liquid self gravitation after the water outlet of pre-buried mouthful of waste water Jian Yangyang district.
Waster water process flow process is as follows: the thing that adds of processing waste water adds respectively and anaerobic zone, in aerobic area and aerobic zone, again waste water is first entered to the full-mixing type anaerobic district at center by top water inlet pipe, rapid homogenizing after water inlet, stop 2-4h, then through anaerobic zone reserved opening, flow to the aerobic area of pulling flow type, the residence time is 7-8h, and utilize waste water plug-flow one circle under self gravitation and the effect of rectification wall to flow to aerobic zone through aerobic area reserved opening, and residence time 15-16h, then under waste water reuse self gravitation and the effect of rectification wall, plug-flow one circle flows out through water outlet, and then reach the object of processing waste water.
The mesosphere of anaerobism-anoxic-aerobic process system is anaerobic zone, and the facultative fermenting bacteria in this interval is converted into tunning by the organism in waste water, limited carbon source is first offered to polyP bacteria simultaneously, is conducive to improve the phosphor-removing effect of system; Mesosphere is aerobic area, by controlling this interval dissolved oxygen and residence time, can effectively realize aerobic area short-cut nitrification and denitrification, changes ammonia nitrogen into nitrogen discharge in atmosphere, improves art breading COD load simultaneously; Outmost turns is aerobic zone, the sufficient oxygen that this interval provides by micro-hole aerator is carried out aerobic nitrification to COD residual in waste water, what by aerobic zone, inoculate and culture out on the other hand aerobicly carries out aerobic nitrification from oxygen type Nitrite bacteria to ammonia nitrogen, make ammonia nitrogen change nitrate nitrogen into and be back to the oxygen section of holding concurrently to carry out anti-nitration reaction, to reach the object of removing ammonia nitrogen.
A kind of two sections of pulling flow type anaerobism-anoxic-aerobic process as above, is characterized in that described waste water is nitrogen-containing wastewater, phosphorus-containing wastewater etc.
In anaerobic zone, aerobic area and aerobic zone, be enriched with methanation, denitrification and nitrifying sludge.Described methanation, denitrification and nitrifying sludge can produce the facultative fermenting bacteria of anaerobism, polyP bacteria, aerobic nitrification bacterium etc. by domestication.
In sum, this technique is with respect to its advantage of prior art:
1, rectification wall is set, makes waste water plug-flow operation under the effect of self gravitation and rectification wall, by traditional fully mixing, change pulling flow type into, saved greatly energy consumption, improve treatment effect simultaneously.
2, by controlling aerobic area dissolved oxygen and the residence time, and reflux reflux pump under liquid is set between anaerobic zone and aerobic area, aerobic area and aerobic zone under water, can effectively realize short-cut nitrification and denitrification, improve technique COD and load.Compare with traditional technology, have saving carbon source, the feature such as sludge yield is few, has very large actual application value for nitrogenous higher and waste water carbon source deficiency.
3, by aerobic area and aerobic zone micro-hole aerator is set, effectively in waste water, add enough oxygen.
4, by technique ammonia nitrogen removal frank 90% of the present invention, dephosphorizing rate 90%, COD clearance 85%, more traditional A2O technique improves 5-6 percentage point.
Accompanying drawing explanation
Fig. 1 is a kind of two sections of pulling flow type anaerobism of the present invention-oxygen-aerobic reaction pond orthographic plan of holding concurrently.Wherein 1, water inlet pipe, 2, pre-buried mouthful of anaerobic zone, 3, pre-buried mouthful of aerobic area, 4, reflux pump under the liquid of aerobic zone, 5, reflux pump under the liquid of aerobic area, 6, micro-hole aerator, 7, rectification wall, 8, water inlet tube seat, 9, rising pipe, 10, liquid impellers.
Fig. 2 be A shown in Fig. 1 to, B to C to sectional view.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described:
A kind of two sections of pulling flow type anaerobism of the present invention-oxygen-aerobic reaction pond of holding concurrently, the main anaerobic zone of passing through concentric(al) circles and arranging to outer ring successively, carry out a biological disposal upon successively in aerobic area and aerobic zone, first waste water enters center circle through top, anaerobic zone wastewater inlet pipe 1 and carries out anaerobic treatment, anaerobic zone is for mixing completely, rapid homogenizing under the effect of liquid impellers 10, residence time 2-4h, waste water stays for some time through anaerobic zone and flows to mesosphere aerobic area for pre-buried mouthful 2 by anaerobic zone, waste water plug-flow one circle in rectification wall 7 and deadweight situation flows to outmost turns aerobic zone for pre-buried mouthful 3 by aerobic area and bottom, aerobic zone, the residence time is 7-8h, waste water plug-flow one circle in aerobic zone rectification wall 7 and deadweight situation flows out through rising pipe 9, the effect of aerobic area part waste water reflux pump 5 under liquid is back to anaerobic zone, under the effect of aerobic zone part waste water reflux pump 4 under liquid through being back to aerobic area, the aerobic zone residence time is about 15-16h.In described aerobic area, aerobic zone bottom is provided with a plurality of micro-hole aerators 6, and rectification wall 7 is set between aerobic area and aerobic zone.
Sludge acclimatization: the second pond aerobic sludge of taking from sewage work is added to anaerobic zone, aerobic area, aerobic zone according to volume ratio 50-60%, the culturing sludge initial stage, begin into a small amount of factory effluent, flooding quantity is no more than 20% of domestication pre-treatment ability.Supplement fresh water, ight soil water etc. simultaneously.Reach after better processing, can increase factory effluent dosage, each increasing is no more than 10~20%, and adapts to after consolidating and continue to increase the indexs such as factory effluent Simultaneous Monitoring water outlet CODcr concentration again until microorganism, and observes mixed solution sludge character and carry out the biophase microscopy of mud.Biophase is good, illustrates that sludge acclimatization completes, and can carry out wastewater treatment.
Embodiment 1
By the 50-60% of anaerobic zone, aerobic area, aerobic zone volume separately, add the second pond aerobic sludge of taking from sewage work respectively.Wherein, specifically at the culturing sludge initial stage, begin into a small amount of factory effluent, flooding quantity is no more than 20% of domestication pre-treatment ability.Supplement fresh water, ight soil water etc. simultaneously.Reach after better processing, can increase factory effluent dosage, each increasing is no more than 10~20%, and adapts to after consolidating and continue to increase the indexs such as factory effluent Simultaneous Monitoring water outlet CODcr concentration again until microorganism, and observes mixed solution sludge character and carry out the biophase microscopy of mud.Biophase is good, illustrates that sludge acclimatization completes, and can carry out wastewater treatment.
By COD, be 600mg/L, ammonia nitrogen 100mg/L, total phosphorus 30mg/ waste water is used two sections of pulling flow type anaerobism-anoxic-aerobic process to process, first waste water is introduced to anaerobic zone, center through top, anaerobic zone wastewater inlet pipe, under the effect of liquid impellers, waste water mixes rapidly homogenizing, the facultative fermenting bacteria of this interval anaerobism is converted into tunning by the organism in waste water, limited carbon source is first offered to polyP bacteria simultaneously, be conducive to improve the phosphor-removing effect of system, waste water stops 2.5h and enters aerobic area by pre-buried mouth in anaerobic zone, waste water is plug-flow one circle under the effect of rectification wall and self gravitation, aerobic area is by controlling the residence time and dissolved oxygen, can effectively realize biodegradable organic in the nitrate that utilizes aerobic zone mixed-liquor return and bring and waste water and carry out short-cut nitrification and denitrification reaction, reach the object of simultaneously removing organic carbon and denitrogenation, waste water is at aerobic area residence time 7h, waste water after processing flows to aerobic zone through pre-buried mouth, this section is mainly carried out aerobic oxidation to residual COD, what by this section, by domestication, produced on the other hand aerobicly carries out aerobic nitrification from oxygen type Nitrite bacteria to ammonia nitrogen, make ammonia nitrogen change nitrate nitrogen into and be back to the oxygen section of holding concurrently to carry out anti-nitration reaction, ammonia nitrogen is removed completely, waste water is at aerobic zone residence time 15h, after aerobic treatment, waste water is discharged by rising pipe,
The waste water index of discharge is after treatment: ammonia nitrogen is 10mg/L, and total phosphorus is 0.5mg/L, and COD is 85mg/L.
Embodiment 2
By COD800mg/L, ammonia nitrogen 150mg/L, total phosphorus 40mg/L waste water is used two sections of pulling flow type anaerobism-anoxic-aerobic process to process, first waste water is introduced to anaerobic zone, center through top, anaerobic zone wastewater inlet pipe, under the effect of liquid impellers, waste water mixes rapidly homogenizing, the facultative fermenting bacteria of this interval anaerobism is converted into tunning by the organism in waste water, limited carbon source is first offered to polyP bacteria simultaneously, be conducive to improve the phosphor-removing effect of system, waste water stops 2.5h and enters aerobic area by pre-buried mouth in anaerobic zone, waste water is plug-flow one circle under the effect of rectification wall and self gravitation, control aerobic area dissolved oxygen 1-1.5mg/L, aerobic area is by controlling the residence time and dissolved oxygen, can effectively realize biodegradable organic in the nitrate that utilizes aerobic zone mixed-liquor return and bring and waste water and carry out short-cut nitrification and denitrification reaction, reach the object of simultaneously removing organic carbon and denitrogenation, , waste water is at aerobic area residence time 7h, waste water after processing flows to aerobic zone through pre-buried mouth, this section is mainly carried out aerobic oxidation to residual COD, what by this section, by domestication, produced on the other hand aerobicly carries out aerobic nitrification from oxygen type Nitrite bacteria to ammonia nitrogen, make ammonia nitrogen change nitrate nitrogen into and be back to the oxygen section of holding concurrently to carry out anti-nitration reaction, ammonia nitrogen is removed completely, waste water is at aerobic zone residence time 15h, after aerobic treatment, waste water is discharged by rising pipe,
The waste water index of discharge is after treatment: ammonia nitrogen is 15mg/L, total phosphorus 0.7mg/L, and COD is 95mg/L.
Embodiment 3
By COD, be 1000mg/L, ammonia nitrogen 200mg/L, total phosphorus is that 40mg/L waste water is used two sections of pulling flow type anaerobism-anoxic-aerobic process to process, first waste water is introduced to anaerobic zone, center through top, anaerobic zone wastewater inlet pipe, under the effect of liquid impellers, waste water mixes rapidly homogenizing, the facultative fermenting bacteria of this interval anaerobism is converted into tunning by the organism in waste water, limited carbon source is first offered to polyP bacteria simultaneously, be conducive to improve the phosphor-removing effect of system, waste water stops 2.5h and enters aerobic area by pre-buried mouth in anaerobic zone, waste water is plug-flow one circle under the effect of rectification wall and self gravitation, aerobic area is by controlling the residence time and dissolved oxygen, can effectively realize biodegradable organic in the nitrate that utilizes aerobic zone mixed-liquor return and bring and waste water and carry out short-cut nitrification and denitrification reaction, reach the object of simultaneously removing organic carbon and denitrogenation, waste water is at aerobic area residence time 7h, waste water after processing flows to aerobic zone through pre-buried mouth, this section is mainly carried out aerobic oxidation to residual COD, what by this section, by domestication, produced on the other hand aerobicly carries out aerobic nitrification from oxygen type Nitrite bacteria to ammonia nitrogen, make ammonia nitrogen change nitrate nitrogen into and be back to the oxygen section of holding concurrently to carry out anti-nitration reaction, ammonia nitrogen is removed completely, waste water is at aerobic zone residence time 15h, after aerobic treatment, waste water is discharged by rising pipe,
The waste water index of discharge is after treatment: ammonia nitrogen is 15mg/L, and total phosphorus is 0.8mg/L, and COD is 90mg/L.

Claims (5)

1. two sections of pulling flow type anaerobism-oxygen-aerobic reaction ponds of holding concurrently, is characterized in that: in reaction tank, be extremely followed successively by anaerobic zone, aerobic area and aerobic zone outward; Wastewater inlet pipe is located at the top, anaerobic zone of reaction tank, and rising pipe is located at the top, aerobic zone of reaction tank; Aerobic area and bottom, aerobic zone are equipped with a plurality of micro-hole aerators; Between anaerobic zone and aerobic area, aerobic area and aerobic zone, be radially respectively equipped with rectification wall, anaerobic zone reserved opening and reflux pump are established respectively in rectification wall both sides between anaerobic zone and aerobic area, and aerobic area reserved opening and reflux pump are established respectively in the rectification wall both sides between aerobic area and aerobic zone; Liquid impellers is set in anaerobic zone.
2. two sections of pulling flow type anaerobism according to claim 1-oxygen-aerobic reaction pond of holding concurrently, is characterized in that: the bottom adjacent with rectification wall, described anaerobic zone is provided with anaerobic zone reserved opening, and the bottom adjacent with rectification wall, aerobic area is provided with aerobic area reserved opening.
3. two sections of pulling flow type anaerobism according to claim 1-oxygen-aerobic reaction pond of holding concurrently, is characterized in that: between described aerobic area and anaerobic zone, aerobic zone and aerobic area body of wall, be equipped with under liquid reflux pump carry out waste water from aerobic area, aerobic zone refluxes to anaerobic zone.
4. one kind is utilized two sections of pulling flow type anaerobism-oxygen-aerobic reaction pond of holding concurrently to process the method for waste water, it is characterized in that: the thing that adds of processing waste water adds respectively and anaerobic zone, in aerobic area and aerobic zone, again waste water is first entered to the full-mixing type anaerobic district at center by top water inlet pipe, rapid homogenizing after water inlet, stop 2-4h, then through anaerobic zone reserved opening, flow to the aerobic area of pulling flow type, the residence time is 7-8h, and utilize waste water plug-flow one circle under self gravitation and the effect of rectification wall to flow to aerobic zone through aerobic area reserved opening, and residence time 15-16h, then under waste water reuse self gravitation and the effect of rectification wall, plug-flow one circle flows out through water outlet, and then reach the object of processing waste water.
5. by utilizing two sections of pulling flow type anaerobism-oxygen-aerobic reaction pond of holding concurrently to process the method for waste water, it is characterized in that described in claim 4: described waste water is for containing ammonia nitrogen, phosphorus-containing wastewater.
CN201310751259.5A 2013-12-31 2013-12-31 A kind of method of two sections of pulling flow type anaerobism-hold concurrently oxygen-aerobic reaction pond and process sewage thereof CN103693740B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109133513A (en) * 2018-09-12 2019-01-04 泰山学院 Septic tank wastewater recycling centralized processing system after a kind of transformation of rural pit toilet

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JP2000210694A (en) * 1999-01-22 2000-08-02 Kurita Water Ind Ltd Treating device for organic waste water
CN102145960A (en) * 2011-02-24 2011-08-10 江苏省环境科学研究院 Device and method for denitrifying and dephosphorizing ecological protection multi-level filtration wall in water source area on rural land surface
CN102161554A (en) * 2011-04-14 2011-08-24 上海市城市建设设计研究院 Anaerobic hydrolysis-acidification and anoxic-aerobic process-sequencing batch reactor (AO-SBR) integrated sewage treatment reaction tank
CN102616997A (en) * 2012-04-06 2012-08-01 中国中化股份有限公司 Method for treating wastewater generated in production process of iron oxide pigment

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Publication number Priority date Publication date Assignee Title
CN1065645A (en) * 1992-05-22 1992-10-28 中国纺织大学 Aerobic-the hold concurrently oxygen-anaerobic purifing method and the device of high concentrated organic wastewater
JP2000210694A (en) * 1999-01-22 2000-08-02 Kurita Water Ind Ltd Treating device for organic waste water
CN102145960A (en) * 2011-02-24 2011-08-10 江苏省环境科学研究院 Device and method for denitrifying and dephosphorizing ecological protection multi-level filtration wall in water source area on rural land surface
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109133513A (en) * 2018-09-12 2019-01-04 泰山学院 Septic tank wastewater recycling centralized processing system after a kind of transformation of rural pit toilet

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