CN102491599A - Domestic sewage integrated-treatment method - Google Patents

Domestic sewage integrated-treatment method Download PDF

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Publication number
CN102491599A
CN102491599A CN2011104250233A CN201110425023A CN102491599A CN 102491599 A CN102491599 A CN 102491599A CN 2011104250233 A CN2011104250233 A CN 2011104250233A CN 201110425023 A CN201110425023 A CN 201110425023A CN 102491599 A CN102491599 A CN 102491599A
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China
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sewage
sedimentation
aeration
treatment
filtration
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CN2011104250233A
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CN102491599B (en
Inventor
贺占民
杨丙峰
马敏杰
吴国华
石玉川
陈为民
翟继红
郭霖
隋良翊
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China Railway Design Corp
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Third Railway Survey and Design Institute Group Corp
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Abstract

The invention discloses a domestic sewage integrated-treatment method. The domestic sewage integrated-treatment method combines multiple processes and technologies such as natural sedimentation, biochemical degradation, aeration catalysis, sludge filtration and anhydration and the like. The domestic sewage integrated-treatment method is utilized for sewage treatment of railway stations far away from cities and towns, and living zones. The natural sedimentation comprises a vertical-flow precipitation process and a parallel-flow precipitation process. In the vertical-flow precipitation process, a flowing direction of sewage is the same as a settlement direction of pollutant particles. In the parallel-flow precipitation process, a following direction of sewage is perpendicular to a settlement direction of pollutant particles. In the biochemical degradation, sewage evenly passes through a preset anaerobic filter material with anaerobic bacteria so that suspended small pollutants in the sewage are adsorbed by treatment bacteria and then are biochemically degraded. In the aeration catalysis, gas is fed into sewage subjected to gas-water separation so that ammonia and nitrogen of the sewage are removed. Activated sludge produced by the treatment processes is filtered by a filter material, and the activated sludge remaining on the surface of the filter material after filter material filtration is subjected to natural anhydration to form bio-fertilizer for recycle. The sewage subjected to the filter material filtration is fed back to the vertical-flow precipitation process of the natural sedimentation and then is subjected to the circulating treatment.

Description

The integrated treatment process of sewage
Technical field
The present invention relates to water technology, particularly relate to the advanced treatment technology of sewage.
Background technology
Sanitary sewage disposal be city-building, engineering construction one of the essential problem that solves.For the big-and-middle-sized sewage work in cities and towns, what face is that quantity of wastewater effluent is big, discharge point is concentrated, and easy realization sewage is concentrated and administered.And away from the railway station and the resident living point in cities and towns, sewage discharge point disperses, and quantity of wastewater effluent is little, has increased difficulty for the improvement of sewage.But this type of sewage discharge number of spots is many, and its source of pollution can not effectively be administered, and also will produce bigger influence to physical environment.Therefore, the WWT at railway station along the line more and more obtains paying attention in Environment in Railway Engineering Construction.
At present, away from the medium and small sewage works of the railway in cities and towns station along the line, resident living point etc., the sewage water treatment method that adopts usually mainly contains: contact oxidation method, artificial swamp method, anaerobic filter method etc.
The contact oxidation method utilization is dwelt and is attached to the microbial film that adds on the material and the oxygen of ample supply, through biological oxidation, makes the organic pollutant oxygenolysis reach the purification purpose.But the structures of contact oxidation method treatment facility are scattered, and floor space is bigger, and connecting tube is many between the structures, and construction investment is big, the operation energy consumption is high.
The artificial swamp facture relies on the absorption of wetland aquatic organism and vegetation, decomposes the sewage organic pollutant, and energy consumption is lower.But this method is taken up an area of many and influenced by seasonal climate bigger, and summer, hygienic condition were poor, severe winter vegetation withered biochemical decompose sewage organic pollutant efficient low, go out water unstable.
The anaerobic filter method utilizes the biochemical action of anerobes to carry out the decomposition of organic pollutant, and technology is simple, energy consumption is also low.But biolysis is incomplete, and ammonia nitrogen is difficult for removing, and sand filter efficient is low, and it is low to go out water quality standard.
Above-mentioned sewage water treatment method respectively has its characteristics, also all has some problems.For medium and small sewage works, also do not have at present a kind of energy-conservation, low-carbon (LC) and can adapt to the sewage water treatment method of maximum discharge requirement away from the railway in cities and towns station along the line, resident living point etc.
Summary of the invention
The problem that exists to medium and small sewage works sewage water treatment method away from the railway in cities and towns station along the line, resident living point etc.; The present invention releases the integrated treatment process of sewage; Its purpose is multiple treatment technology technology organically combined and is one,, low-carbon (LC) energy-conservation to adapt to, high-efficiency sewage treatment requirement.
The technological step of the integrated treatment process of sewage involved in the present invention comprises: S1-natural sedimentation, S2-biochemical degradation, S3-aeration and catalyzing, S4-sludge filtration mummification.
The S1-natural sedimentation
Natural sedimentation comprises perpendicular stream deposition and advection sedimentation.Sewage vertically flows down earlier after balanced water distribution, erects the stream deposition, and effluent stream has been quickened the deposition of big or middle contaminant particle in the sewage to identical with contaminant particle sedimentation direction; Perpendicular stream oettIed sewage mixes with the WWT bacterial classification that presets again; Current transfer advection to simultaneously, carry out advection sedimentation, and effluent stream is to vertical with contaminant particle sedimentation direction; Pollutent small-particle bonding under the absorption of handling bacterial classification in the sewage, the pollutent small-particle progressively increases, increases weight.The natural sedimentation process has been utilized the natural subsidence rule of sewage, and sewage is separated with contaminant particle, and most of contaminant particle sedimentation forms mud, and sewage tentatively is purified.
The S2-biochemical degradation
The anaerobism filtrate that has anaerobic species that presets is passed in sewage equilibrium through natural sedimentation is handled; The small pollutent of suspension in the sewage is processed bacterial classification absorption, filtrate interception; Organic pollutant is by anoxic, anaerobic biological degraded;, biogas discharged utilize again through gas-water separation through the sewage of biochemical degradation, sewage is further purified.
The S3-aeration and catalyzing
Sludge after gas-water separation is carried out aeration and catalyzing and is handled, and ammonia, nitrogen in the sewage are separated out, and removes floating foreign material through floating assorted the collection again, and making sewage obtain deep purifying becomes clear water.Then, the clear water after will purifying again filters filter through hydrophilic complex sand, reduces the water molecules surface tension, and further the clear water after the purifying treatment is stored water reservoir, in order to reuse.
S4-sludge filtration mummification
The active sludge deposition that in natural sedimentation, biochemical degradation, aeration and catalyzing treating processes, produces is pooled to the settling region through the mud gravity channel, filters mummification.Be pooled to the mud of settling region, increase the sludge concentration of precipitation zone, also replenished the various processing bacterial classifications that sewage treatment process needs simultaneously automatically.The active sludge that the settling region compiles regularly rises to the sludge drying treatment system, and by media filtration, the mud that is trapped in filter material surface behind the media filtration reclaims as bio-feritlizer after through the nature mummification and uses; The perpendicular stream deposition of filtering sewage return to the nature precipitation process step is carried out circular treatment.
The integrated treatment process of sewage involved in the present invention is one with multiple treatment process and technical matters combination; Be used for medium and small sewage works,, low-carbon (LC) energy-conservation, WWT efficiently to carry out away from the railway in cities and towns station along the line, resident living point etc.
Description of drawings
Fig. 1 is the integrated treatment process process flow diagram of sewage involved in the present invention.
Description of symbols among the figure:
S1, natural sedimentation S2, biochemical degradation
S3, aeration and catalyzing S4, sludge filtration mummification.
Embodiment
Combine accompanying drawing that technical scheme of the present invention is further specified at present.Fig. 1 shows typical process flow of the present invention, and is as shown in the figure, and the technological step of the integrated treatment process of sewage involved in the present invention comprises: S1-natural sedimentation, S2-biochemical degradation, S3-aeration and catalyzing, S4-sludge filtration mummification.
The S1-natural sedimentation
Natural sedimentation comprises perpendicular stream deposition and advection sedimentation.Sewage vertically flows down earlier after balanced water distribution, erects the stream deposition, and effluent stream has been quickened the deposition of big or middle contaminant particle in the sewage to identical with contaminant particle sedimentation direction; Perpendicular stream oettIed sewage mixes with the WWT bacterial classification that presets again; Current transfer advection to simultaneously, carry out advection sedimentation, and effluent stream is to vertical with contaminant particle sedimentation direction; Pollutent small-particle bonding under the absorption of handling bacterial classification in the sewage, the pollutent small-particle progressively increases, increases weight.The natural sedimentation process has been utilized the natural subsidence rule of sewage, and sewage is separated with contaminant particle, and most of contaminant particle sedimentation forms mud, and sewage tentatively is purified.
The S2-biochemical degradation
The anaerobism filtrate that has anaerobic species that presets is passed in sewage equilibrium through natural sedimentation is handled; The small pollutent of suspension in the sewage is processed bacterial classification absorption, filtrate interception; Organic pollutant is by anoxic, anaerobic biological degraded;, biogas discharged utilize again through gas-water separation through the sewage of biochemical degradation, sewage is further purified.
The S3-aeration and catalyzing
Sludge after gas-water separation is carried out aeration and catalyzing and is handled, and ammonia, nitrogen in the sewage are separated out, and removes floating foreign material through floating assorted the collection again, and making sewage obtain deep purifying becomes clear water.Then, the clear water after will purifying again filters filter through hydrophilic complex sand, reduces the water molecules surface tension, and further the clear water after the purifying treatment is stored water reservoir, in order to reuse.
S4-sludge filtration mummification
The active sludge deposition that in natural sedimentation, biochemical degradation, aeration and catalyzing treating processes, produces is pooled to the settling region through the mud gravity channel, filters mummification.Be pooled to the mud of settling region, increase the sludge concentration of precipitation zone, also replenished the various processing bacterial classifications that sewage treatment process needs simultaneously automatically.The active sludge that the settling region compiles regularly rises to the sludge drying treatment system, and by media filtration, the mud that is trapped in filter material surface behind the media filtration reclaims as bio-feritlizer after through the nature mummification and uses; The perpendicular stream deposition of filtering sewage return to the nature precipitation process step is carried out circular treatment.

Claims (4)

1. integrated treatment process of sewage, it is characterized in that: technological step comprises natural sedimentation (S1), biochemical degradation (S2), aeration and catalyzing (S3), sludge filtration mummification (S4); Natural sedimentation (S1) comprises perpendicular stream deposition and advection sedimentation, and the sedimentary effluent stream of perpendicular stream is to identical with contaminant particle sedimentation direction, and the effluent stream of advection sedimentation is to vertical with contaminant particle sedimentation direction; Biochemical degradation (S2); The sewage equilibrium is passed the anaerobism filtrate that has anaerobic species that presets; The small pollutent of suspension in the sewage is processed bacterial classification absorption, filtrate interception; Organic pollutant is by anoxic, anaerobic biological degraded, and the sewage of biochemical degradation is discharged utilization again through gas-water separation with biogas; Aeration and catalyzing (S3), the sludge after gas-water separation is carried out aeration and catalyzing and is handled, and ammonia, nitrogen in the sewage are separated out; Sludge filtration mummification (S4); With the active sludge deposition that produces in natural sedimentation, biochemical degradation, the aeration and catalyzing treating processes; Be pooled to the settling region through the mud gravity channel; By media filtration, the mud that is trapped in filter material surface behind the media filtration reclaims as bio-feritlizer after through the nature mummification and uses.
2. the integrated treatment process of sewage according to claim 1 is characterized in that: in said natural sedimentation (S1) step, perpendicular stream oettIed sewage mixes with the WWT bacterial classification that presets again, and current transfer advection to simultaneously, carry out advection sedimentation.
3. the integrated treatment process of sewage according to claim 1; It is characterized in that: in said aeration and catalyzing (S3) step, in the sewage that ammonia, nitrogen are separated out, remove floating foreign material through floating assorted the collection again; Then; Filter filter through hydrophilic complex sand again, reduce the water molecules surface tension, further purifying treatment.
4. the integrated treatment process of sewage according to claim 1 is characterized in that: in said sludge filtration mummification (S4) step, through the perpendicular stream deposition of the sewage return to the nature precipitation process step of media filtration, carry out circular treatment.
CN 201110425023 2011-12-16 2011-12-16 Domestic sewage integrated-treatment method Active CN102491599B (en)

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CN102491599B CN102491599B (en) 2013-05-08

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103086565A (en) * 2012-11-22 2013-05-08 天长市飞龙金属制品有限公司 Safety treatment process for sewage
CN103112990A (en) * 2012-11-22 2013-05-22 天长市飞龙金属制品有限公司 Sewage purification treatment process
CN104086001A (en) * 2014-07-10 2014-10-08 杨晴雅 Treatment process applicable to industrial wastewater and application of industrial wastewater in preparation of bacterial manure
WO2016206419A1 (en) * 2015-06-22 2016-12-29 张萍 Domestic sewage treatment method
WO2016206417A1 (en) * 2015-06-22 2016-12-29 张萍 Comprehensive sludge treatment method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1706760A (en) * 2004-06-09 2005-12-14 高斌 City sewage treating process and system
CN101244883A (en) * 2008-03-21 2008-08-20 北京工业大学 High-efficiency low-consumption retexture method for urban sewage
CN101811804A (en) * 2010-04-21 2010-08-25 上海方合正环境工程科技发展有限公司 Domestic sewage bioreaction treatment and recycling system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1706760A (en) * 2004-06-09 2005-12-14 高斌 City sewage treating process and system
CN101244883A (en) * 2008-03-21 2008-08-20 北京工业大学 High-efficiency low-consumption retexture method for urban sewage
CN101811804A (en) * 2010-04-21 2010-08-25 上海方合正环境工程科技发展有限公司 Domestic sewage bioreaction treatment and recycling system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103086565A (en) * 2012-11-22 2013-05-08 天长市飞龙金属制品有限公司 Safety treatment process for sewage
CN103112990A (en) * 2012-11-22 2013-05-22 天长市飞龙金属制品有限公司 Sewage purification treatment process
CN104086001A (en) * 2014-07-10 2014-10-08 杨晴雅 Treatment process applicable to industrial wastewater and application of industrial wastewater in preparation of bacterial manure
CN104086001B (en) * 2014-07-10 2015-07-01 杨晴雅 Treatment process applicable to industrial wastewater and application of industrial wastewater in preparation of bacterial manure
WO2016206419A1 (en) * 2015-06-22 2016-12-29 张萍 Domestic sewage treatment method
WO2016206417A1 (en) * 2015-06-22 2016-12-29 张萍 Comprehensive sludge treatment method

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Address after: 300142 Hebei District, Zhongshan Road, No. 10,

Patentee after: China Railway Design Group Limited

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Patentee before: China Railway Third Survey and Design Institute Group Ltd.

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