CN102249412B - Multistage anoxic and anaerobic circulation tail section anoxic activated sludge treatment process and system - Google Patents

Multistage anoxic and anaerobic circulation tail section anoxic activated sludge treatment process and system Download PDF

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Publication number
CN102249412B
CN102249412B CN 201110132026 CN201110132026A CN102249412B CN 102249412 B CN102249412 B CN 102249412B CN 201110132026 CN201110132026 CN 201110132026 CN 201110132026 A CN201110132026 A CN 201110132026A CN 102249412 B CN102249412 B CN 102249412B
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pond
anoxic
anaerobic
aerobic
combination
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CN102249412A (en
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张雁秋
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

The invention discloses a multistage anoxic and anaerobic circulation tail section anoxic activated sludge treatment process and system. A plurality of aerobic basins and a plurality of anoxic basins are communicated alternatively; every anoxic basin is connected with an anaerobic basin to form a plurality of combinations consisting of one aerobic basin, a subsequent anoxic basin communicated with the aerobic basin and one anaerobic basin connected with the subsequent anoxic basin; sewage is shunted and fed into the anaerobic basins of all combinations simultaneously; a mud-water miscible liquid flowing out of the aerobic basin of every combination enters the anoxic basin of the combination; sewage entering the anaerobic basin is mixed with the mud-water miscible liquid entering the anaerobic basin from the anoxic basin of the combination, and circulates between the anaerobic basin and the anoxic basin of the combination; a mud-water miscible liquid flowing out of the anoxic basin of every combination enters the aerobic basin of the next combination; and a miscible liquid flowing out of the anoxic basin of the last combination enters a secondary sedimentation tank. The process and the system are most suitable for treating urban domestic sewage, and have the advantages of saving in aeration amount and small demand quantity of carbon sources; and the problem of difficulty in realizing efficient nitrogen and phosphorus removal of urban sewage caused by insufficient carbon source and disproportionality of carbon, nitrogen and phosphorus is well solved.

Description

A kind of multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique and system
Technical field
The present invention relates to a kind of multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique and treatment system, be particularly useful for the processing of low carbon source city domestic sewage.
Background technology
In recent years, the problem of water environment pollution and body eutrophication is day by day serious.And nitrogen, phosphorus are the principal elements that causes body eutrophication.Along with the raising of Public Environmental Awareness and more and more stricter to the limitation standard of the discharging of nitrogen, phosphorus both at home and abroad, sewage disposal technology, especially phosphate uptake denitride technology that research and development are economical, remove nitrogen, phosphorus efficiently are the focuses in Water Pollution Control Engineering field always.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in the prior art, provide that a kind of technique is simple, less, the lower-cost multi-stage anaerobic anaerobism of energy consumption circulation rear hypoxia activity sludge treatment technique and treatment system.
Technical scheme: multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique of the present invention, comprise aerobic, anoxic and anaerobic biological treatment, and second pond precipitates, discharge supernatant liquor in the precipitation, with the part sludge reflux, treatment step is as follows simultaneously:
A. a plurality of Aerobic Ponds, a plurality of anoxic pond alternately are communicated with, each anoxic pond all is connected with an anaerobic pond, forms a plurality of combinations that form by an Aerobic Pond, with a rear anoxic pond of this Aerobic Pond connection and the anaerobic pond that links to each other with a rear anoxic pond;
B. sewage separation is entered simultaneously the anaerobic pond of each combination, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters this combination, mix with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond and enter the sewage of anaerobic pond, and between the anaerobic pond of this combination and anoxic pond, circulate, the muddy water mixed solution that the anoxic pond of each combination flows out enters the Aerobic Pond of next combination, and the mixed solution that the anoxic pond of last combination flows out enters second pond.
The number of the combination that a described rear anoxic pond that is communicated with by an Aerobic Pond, with this Aerobic Pond and the anaerobic pond that links to each other with a rear anoxic pond form is 2~30; Described anaerobic pond and anoxic pond are built jointly or are divided and build; Described anoxic pond and Aerobic Pond are built jointly or are divided and build.
The present invention realizes the treatment system of multi-stage anaerobic anaerobism circulation rear hypoxia activity mud technique, comprise a plurality of Aerobic Ponds, a plurality of anoxic pond, a plurality of anaerobic pond and a second pond, described a plurality of Aerobic Pond, a plurality of anoxic pond alternately are communicated with the form of Aerobic Pond, anoxic pond, Aerobic Pond, anoxic pond, each anoxic pond all is communicated with an anaerobic pond, each anaerobic pond all is communicated with waste pipe, and the return line of second pond is communicated with first Aerobic Pond.
Beneficial effect: this takes full advantage of limited carbon source in conjunction with method for biologically treating wastewater, has improved the utilization ratio of carbon source in the wastewater treatment, has effectively solved the problem of carbon source deficiency in the phosphate uptake, has improved significantly the sludge concentration of system simultaneously.Sewage directly enters anaerobic pond, and limited carbon source is preferentially supplied with polyP bacteria; Muddy water mixed solution circulates between anaerobic pond and anoxic pond, is conducive to form denitrification dephosphorization under anoxia condition, and denitrification denitrogenation and 2 self-contained process of excessive suction phosphorus are united two into one, and a carbon is dual-purpose.By making active sludge alternately through anaerobism, anoxic and aerobic environment, so that each quasi-microorganism alternately enters favourable growing environment itself, microorganism can be suppressed self disadvantageous growing environment because being in for a long time, be conducive to each quasi-microorganism and keep high biological activity.Returned sluge from second pond all enters the activity that Aerobic Pond is conducive to recover as early as possible aerobic microbiological.The present invention has and saves aeration rate, needs the advantages such as carbon source is less, can solve preferably because of carbon source on the low side, carbon, nitrogen, phosphorus ratio imbalance, and be difficult to realize the processing problem of the municipal effluent of highly effective dephosphorizing denitrification.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique of the present invention, a plurality of Aerobic Ponds, a plurality of anoxic pond alternately are communicated with, each anoxic pond all is connected with an anaerobic pond, form the combination that a plurality of rear anoxic pond that are communicated with by an Aerobic Pond, with this Aerobic Pond and the anaerobic pond that links to each other with a rear anoxic pond form, the number of this combination is 2~30.Sewage separation is entered simultaneously the anaerobic pond of a plurality of combinations, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters this combination, mix with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond and enter the sewage of anaerobic pond, anaerobic pond and anoxic pond are built jointly or are divided and build, and anoxic pond and Aerobic Pond are built jointly or divided and build.Between the anaerobic pond of a combination and anoxic pond, circulate, the muddy water mixed solution that the anoxic pond of each combination flows out enters the Aerobic Pond of next combination, the mixed solution that the anoxic pond of last combination flows out enters second pond, solid-liquid separation in second pond, discharge supernatant liquor, returned sluge enters first Aerobic Pond, and regularly discharges excess sludge.
The treatment system of realization multi-stage anaerobic anaerobism circulation rear hypoxia activity mud technique of the present invention, mainly consisted of by a plurality of Aerobic Ponds, anoxic pond, a plurality of anaerobic pond and a second pond, anaerobic pond and anoxic pond can be built jointly also can divide and build, and anoxic pond and Aerobic Pond can be built jointly also can divide and build.A plurality of Aerobic Ponds and a plurality of anoxic pond alternately are communicated with the form of Aerobic Pond, anoxic pond, Aerobic Pond, anoxic pond, and each anoxic pond all is communicated with an anaerobic pond, and each anaerobic pond all is communicated with waste pipe, and the return line of second pond is communicated with first Aerobic Pond.

Claims (5)

1. multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique comprises aerobic, anoxic and anaerobic biological treatment, and precipitates through second pond, discharges supernatant liquor in the precipitation, simultaneously with the part sludge reflux, it is characterized in that treatment step is as follows:
A. a plurality of Aerobic Ponds, a plurality of anoxic pond alternately are communicated with, each anoxic pond all is connected with an anaerobic pond, forms a plurality of combinations that form by an Aerobic Pond, with a rear anoxic pond of this Aerobic Pond connection and the anaerobic pond that links to each other with a rear anoxic pond;
B. sewage separation is entered simultaneously the anaerobic pond of each combination, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters this combination, mix with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond and enter the sewage of anaerobic pond, and between the anaerobic pond of this combination and anoxic pond, circulate, the muddy water mixed solution that the anoxic pond of each combination flows out enters the Aerobic Pond of next combination, and the mixed solution that the anoxic pond of last combination flows out enters second pond.
2. multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique according to claim 1 is characterized in that: the number of the combination that described a plurality of rear anoxic pond that are communicated with by an Aerobic Pond, with this Aerobic Pond and the anaerobic pond that links to each other with a rear anoxic pond form is 2~30.
3. multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique according to claim 1 is characterized in that: described anaerobic pond and anoxic pond are built jointly or minute are built.
4. multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique according to claim 1 is characterized in that: described anoxic pond and Aerobic Pond are built jointly or minute are built.
5. system that realizes multi-stage anaerobic anaerobism circulation rear hypoxia activity sludge treatment technique, comprise a plurality of Aerobic Ponds, a plurality of anoxic pond, a plurality of anaerobic pond and a second pond, it is characterized in that: described anaerobic pond and anoxic pond are built jointly or are divided and build, and anoxic pond and Aerobic Pond are built jointly or divided and build; A plurality of Aerobic Ponds, a plurality of anoxic pond are with Aerobic Pond, anoxic pond, Aerobic Pond, the form of anoxic pond alternately is communicated with, each anoxic pond all is communicated with an anaerobic pond, form a plurality of by an Aerobic Pond, the combination of a rear anoxic pond that is communicated with Aerobic Pond and the anaerobic pond composition that links to each other with a rear anoxic pond, each anaerobic pond all is communicated with waste pipe, the return line of second pond is communicated with first Aerobic Pond, last anoxic pond connects second pond, sewage separation enters the anaerobic pond of a plurality of combinations simultaneously, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters this combination, mix with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond and enter the sewage of anaerobic pond, between the anaerobic pond of a combination and anoxic pond, circulate, the muddy water mixed solution that the anoxic pond of each combination flows out enters the Aerobic Pond of next combination, the mixed solution that the anoxic pond of last combination flows out enters second pond, solid-liquid separation in second pond, discharge supernatant liquor, returned sluge enters first Aerobic Pond, and regularly discharges excess sludge.
CN 201110132026 2011-05-20 2011-05-20 Multistage anoxic and anaerobic circulation tail section anoxic activated sludge treatment process and system Expired - Fee Related CN102249412B (en)

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* Cited by examiner, † Cited by third party
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CN103601296B (en) * 2013-11-15 2015-11-25 玉溪师范学院 A kind of D-A of diphasic anaerobic anoxic alternate run 2/ O sewage-treating reactor
CN112079521A (en) * 2020-08-27 2020-12-15 生态环境部华南环境科学研究所 Based on A2Alternate rural sewage treatment device for O process

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6562237B1 (en) * 1998-12-04 2003-05-13 Tox Olaopa Biological nutrient removal using the olaopa process
CN1772655A (en) * 2005-09-27 2006-05-17 中国矿业大学 High efficiency nitrification process of biological sewage treatment
CN2801772Y (en) * 2005-06-28 2006-08-02 中国矿业大学 Frequent nitration denitrification device for sewage biological treatment
CN200946120Y (en) * 2005-06-23 2007-09-12 中国矿业大学 Integral multifunctional membrane bioreactor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6562237B1 (en) * 1998-12-04 2003-05-13 Tox Olaopa Biological nutrient removal using the olaopa process
CN200946120Y (en) * 2005-06-23 2007-09-12 中国矿业大学 Integral multifunctional membrane bioreactor
CN2801772Y (en) * 2005-06-28 2006-08-02 中国矿业大学 Frequent nitration denitrification device for sewage biological treatment
CN1772655A (en) * 2005-09-27 2006-05-17 中国矿业大学 High efficiency nitrification process of biological sewage treatment

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