CN101597126B - Sewage treatment method suitable for hilly small towns - Google Patents
Sewage treatment method suitable for hilly small towns Download PDFInfo
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- CN101597126B CN101597126B CN200910104273XA CN200910104273A CN101597126B CN 101597126 B CN101597126 B CN 101597126B CN 200910104273X A CN200910104273X A CN 200910104273XA CN 200910104273 A CN200910104273 A CN 200910104273A CN 101597126 B CN101597126 B CN 101597126B
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Abstract
The invention relates to a sewage treatment method, which is applicable to the west area where the economic technology is comparatively backward and hilly small towns in Yangtze River Valley. The sewage passes through a grating and large suspensions are removed, then the sewage enters an anaerobic biological reaction tank, most solid suspensions and partial organic substances are removed, the effluent carrying oxygen in the air falls through multi-level from the elevation and flows into a water fall aeration tank at the lower part, and a part of the organic substances is removed; then the effluent enters an artificial rapid infiltration system, and pollutants such as the organic substances, nitrogen, phosphorus and the like are removed through the processes of interception, filtration, adsorption, nitration, denitrification and the like of a soil ecosystem; and finally, through ultraviolet disinfection, the effluent is discharged after reaching standards. The method has the characteristics of low energy consumption and expense, simple operation, maintenance and management, little sludge yield, good treatment effect, and the like.
Description
Technical field
The invention belongs to municipal administration and field of environmental engineering, be specifically related to a kind of anaerobic biological treatment-drop water aeration-box-like sewage treatment technique of manpower rapid-infiltration soil treatment group, this technology is particularly suitable for hilly small towns.
Background technology
During the nearly last ten years, the town development in the whole nation a large amount of sewage works, dirty water living creature processing technique is the core technology that town sewage is handled.Take all factors into consideration factors such as samll cities and towns' sewage water yield and water quality characteristics, samll cities and towns' economic and social conditions and environmental requirement, sewage treatment process commonly used at present mainly contains conventional activated sludge process, SBR technology, oxidation ditch process and A
2/ O technology etc. also are the dominant technology that developed country adopted such as America and Europe, are proved to be effective technically.Yet, have quite a few sewage work of samll cities and towns operation conditions pessimistic at present, west area particularly underdeveloped and reservoir area of Three Gorges sewage work of samll cities and towns.Analyze from the technology itself that sewage work adopted, mainly have following problem: 1. operation energy consumption is too high.To adopt the second-stage treatment factory of activated sludge process, the Sewage Plant energy expenditure is 0.2～0.3kwh/m
3(water) mainly concentrates on the water inlet pump house of lifting sewage and the aerating system of second-stage treatment, and the two accounts for more than 70% of full factory energy consumption.2. operational administrative more complicated.Conventional activated sludge process, oxidation ditch process and A
2/ O technology more complicated, long flow path, sewage work's management difficulty is high; SBR technology is simple, but the automatic control degree is high.Owing to lack the professional, usually cause the operation sewage work that builds situation up to standard undesirable in samll cities and towns.These problems have been brought many practical difficulties to the construction of sewage work of samll cities and towns and the operation of having built sewage work of samll cities and towns.Therefore, in conjunction with characteristics such as the population size of local samll cities and towns, economic level, cities and towns forms, researching and developing out the efficient low-consume sewage treatment process of suiting measures to local conditions, is the emphasis that current sewage disposal technology is paid close attention to.
In fact, the sewage treatment process that is fit to samll cities and towns also has anaerobic biological treatment technology and manpower rapid-infiltration soil treatment technology, but the two all is difficult to independent sewage treatment process as samll cities and towns.This is because the water outlet of anaerobic biological treatment technology, far can not reach wastewater discharge standard, but its surge capability to the sewage quality water yield is strong, reduced investment, management is simple, working cost is low, can be used as the pre-treatment of samll cities and towns' WWT; And manpower rapid-infiltration land treatment system treatment effect better, reduced investment, working cost be low, but needs pre-treatment, and takes up an area of bigger.So the independent application of these two kinds of technologies still is fewer in the reality.
Summary of the invention
Above-mentioned deficiency to the prior art existence; The object of the present invention is to provide a kind of anaerobic biological treatment-drop water aeration-manpower rapid-infiltration combined-type sewage treatment process; It is big that present method makes full use of the hilly small towns topographical elevation difference, the more characteristics in idle vacant lot, and it can reduce working cost; Reach that water outlet is effective, the simple requirement of operational management, be particularly suitable for the hilly small towns of relatively backward west area of economic technology and reservoir area of Three Gorges.
The objective of the invention is to realize like this: a kind of sewage water treatment method of suitable hilly small towns is characterized in that: this method may further comprise the steps:
(1) sewage is at first removed bigger suspended substance and swimmer through grid; To alleviate the load of subsequent disposal structures, guarantee the normal operation of follow-up Sewage treatment systems.
(2) sewage after the first step is handled gets into the anaerobe reaction tank and stopped 16～24 hours, is provided with active sludge in the anaerobe reaction tank; In the anaerobe reaction tank, remove most of suspended solid and part organic pollutant in the sewage, and complex organic compound is converted into simple compounds, regulate the sewage water yield and homogenizing sewage quality simultaneously.
(3) water outlet of anaerobe reaction tank is fallen from eminence, flows into the drop water aeration pond of lower certainly and stops 3～6 hours, falls the discrepancy in elevation 6～9m, the built-in water treatment filler in said drop water aeration pond, and the volume packing ratio is 20～30%; In the drop process, the oxygen in the current entrapped air makes that the oxygen level in the sewage is improved, and the sewage in the drop water aeration pond can be converted into oxygen condition and have been removed partial organic substances by anaerobic state.
(4) water outlet of drop water aeration pond gets into manpower rapid-infiltration land system, manpower rapid-infiltration land system soil layer hydraulic load 1.5～2.5m
3/ m
2D; The operation wet-dry ratio is 1d: 3d; Soil layer height 1.4～2.0m, the absorption through interception, filtration, absorption, aerobic oxidation, nitrification and denitrification and the soil layer top layer plant of soil ecosystem is minimized organism, nitrogen, phosphor contaminant matter in the sewage;
(5) water outlet of manpower rapid-infiltration land system gets final product qualified discharge behind disinfection by ultraviolet light.
Further, the anaerobe reaction tank in said (2) step is a two-stage series connection, in each grade anaerobe reaction tank active sludge is arranged all, and the hydraulic detention time of each grade anaerobe reaction tank is 8～12 hours.
Said (3) falling of step is at least two-stage and falls; Every grade is fallen the drop water aeration pond that all is provided with correspondence; Row falls from flowing into next drop water aeration pond again after previous drop water aeration pond stops 1.5～3 hours, and the total time that in all drop water aeration ponds, stops is 3～6 hours.
Compare prior art, the present invention has following beneficial effect:
(1) the combination process operation energy consumption is low, expense is low.No energy consumption processing sewage has been realized in anaerobic pond, three the main technique unit in drop water aeration pond and manpower rapid-infiltration system in this combination process; Have only grid and sterilization process unit need expend low amounts of power; And sewage is to rely on gravity flowage in treatment process, so the energy consumption of combination process and working cost will reduce greatly.
(2) maintenance management is simple.This combination process mainly relies on mikrobe and soil associated treatment and purifies waste water, and maintenance management is simple, and the technician who needs is few, and technical requirements is simple relatively, and the samll cities and towns that are fit to lack qualified technical personnel adopt.
(3) sludge yield is few.The technique unit that produces excess sludge in the combination process has anaerobic pond and drop water aeration pond.Anaerobic technique unit sludge yield is extremely low, and the sludge quantity of generation is few, need only draw clearly every year to get final product for 2～3 times.Drop water aeration is provided with water treatment filler in the pond, and mud is attachment state, so the sludge quantity that produces is also less, and mud gets into land treatment system with current on a small quantity, and is trapped within upper soll layer, does not need other individual curing.
This combination process is handled town domestic sewage can reach the B standard in " urban wastewater treatment firm pollutant emission standard (GB18918-2002) " primary standard, and stable and reliable operation.
Description of drawings
Fig. 1-treatment scheme synoptic diagram of the present invention;
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
As shown in Figure 1, sewage water treatment method of the present invention was made up of five steps, was respectively:
(1) sewage is at first removed bigger suspended substance and swimmer through grid; This step function: alleviate the load of subsequent disposal structures, guarantee the normal operation of follow-up Sewage treatment systems.In theory, the gap of grid is more little good more, and suspended substance of removing like this and swimmer are just more, are more conducive to subsequent disposal.
(2) sewage after the first step is handled gets into the anaerobe reaction tank and stopped 16～24 hours, in the anaerobe reaction tank active sludge is arranged; This step function: in the anaerobe reaction tank, remove most of suspended solid and part organic pollutant in the sewage, and complex organic compound is converted into simple compounds, regulate the sewage water yield and homogenizing sewage quality simultaneously.
(3) water outlet of anaerobe reaction tank is fallen from eminence, flows into the drop water aeration pond of lower certainly and stops 3～6 hours, falls the discrepancy in elevation 6～9m, the built-in water treatment filler in said drop water aeration pond, and the volume packing ratio is 20～30%; This step function: in the drop process, the oxygen in the current entrapped air makes that the oxygen level in the sewage is improved, and the sewage in the drop water aeration pond can be converted into oxygen condition and have been removed partial organic substances by anaerobic state.
(4) water outlet of drop water aeration pond gets into manpower rapid-infiltration land system, manpower rapid-infiltration land system soil layer hydraulic load 1.5～2.5m
3/ m
2D, the operation wet-dry ratio is 1d: 3d, soil layer height 1.4～2.0m certainly, strengthens the soil layer height, can also improve the soil layer hydraulic load.Absorption through interception, filtration, absorption, aerobic oxidation, nitrification and denitrification and the soil layer top layer plant of soil ecosystem is minimized organism, nitrogen, phosphor contaminant matter in the sewage;
(5) water outlet of manpower rapid-infiltration land system gets final product qualified discharge behind disinfection by ultraviolet light.
In order to improve treatment effect, the anaerobe reaction tank in (2) step is a two-stage series connection, all is provided with active sludge in each grade anaerobe reaction tank, and the hydraulic detention time of each grade anaerobe reaction tank is 8～12 hours.
Said (3) falling of step is at least two-stage and falls; Every grade is fallen the drop water aeration pond that all is provided with correspondence; Row falls from flowing into next drop water aeration pond again after previous drop water aeration pond stops 1.5～3 hours, and the total time that in all drop water aeration ponds, stops is 3～6 hours.
In addition, in order to reach better treatment effect, in the drop water aeration pond, be filled with water treatment filler, to increase the interception of mud, intensifying treatment effect reduces the sludge quantity that gets into the manpower rapid-infiltration land treatment system, slows down the obstruction on top layer, soil.
The manpower rapid-infiltration system takes sewage to batch and the soil dried alternative mode that falls is carried out., and hydraulic load cycle that the control water distribution-form that falls becomes, make and form aerobic-anoxic-anaerobic environment in the soil to the water distribution of manpower rapid-infiltration soil layer through intermittently.
Below provide an embodiment
The sewage water treatment method of present embodiment may further comprise the steps:
(1) town domestic sewage is removed bigger suspended substance and swimmer through grid, alleviates the load of subsequent disposal structures, guarantees the normal operation of follow-up Sewage treatment systems.
(2) sewage gets into the anaerobe reaction tank.The anaerobe reaction tank can be removed most of suspended solid and part organic pollutant in the water, and complex organic compound is converted into simple compounds, regulates the sewage water yield and homogenizing sewage quality simultaneously.The anaerobe reaction tank of present embodiment is a two-stage series connection, and the hydraulic detention time of each grade anaerobe reaction tank is 8 hours, and total hydraulic detention time is 16 hours.
(3) water outlet of anaerobe reaction tank is fallen through multistage from eminence, flows into the drop water aeration pond of lower certainly.In the drop process, the oxygen in the current entrapped air makes that the oxygen level in the sewage is improved, and the sewage in the drop water aeration pond can be converted into oxygen condition by anaerobic state.The present embodiment mesorelief discrepancy in elevation is 7m, adopts the two-stage drop, series operation, and the hydraulic detention time in single drop water aeration pond is 2.6 hours, total hydraulic detention time is 5.2 hours.
(4) water outlet of drop water aeration pond gets into the manpower rapid-infiltration system, and through the processes such as absorption of interception, filtration, absorption, aerobic oxidation, nitrification and denitrification and the plant of soil ecosystem, the organism in the sewage, nitrogen, phosphorus etc. are able to effective reduction.Soil layer hydraulic load 2.0m in the present embodiment
3/ m
2D, operation wet-dry ratio 1d: 3d, soil layer height 1.40m.
(5) water outlet of manpower rapid-infiltration system qualified discharge behind disinfection by ultraviolet light.
Present embodiment main processing reservoir area of Three Gorges small town sewage.After this engineering debug operation, obtain good treatment effect, the WWT scale is 800m
3/ day, water outlet reaches the B standard in " urban wastewater treatment firm pollutant emission standard (GB18918-2002) " primary standard.
Main technical details
Anaerobe reaction tank: waterpower total residence time 16～24 hours.
Drop water aeration pond: always fall the discrepancy in elevation 6～9m, two-stage or three grades of drops, drop water aeration tank waterpower total residence time 3～6 hours, the built-in Ball-type packing in drop water aeration pond, volume packing ratio 20～30%, the i.e. ratio of packing volume and drop water aeration pond useful volume.
Manpower rapid-infiltration land system: soil layer hydraulic load 1.5～2.5m
3/ m
2D, operation wet-dry ratio 1d: 3d, i.e. water distribution one day, intermittently two days, soil layer height 1.40～2.0m.
Present method has requirement to place discrepancy in elevation condition, because the operation of this combination process need utilize gravitional force, so need the above topographical elevation difference of 6m in the construction place of sewage work.
Claims (2)
1. the sewage water treatment method of a suitable reservoir area of Three Gorges hilly small towns, it is characterized in that: this method may further comprise the steps:
(1) sewage is at first removed bigger suspended substance and swimmer through grid;
(2) sewage after the first step is handled gets into the anaerobe reaction tank and stopped 16～24 hours, is provided with active sludge in the anaerobe reaction tank;
(3) water outlet of anaerobe reaction tank is fallen from eminence; And fall and be at least two-stage and fall; Every grade is fallen the drop water aeration pond that all is provided with correspondence; Row falls from flowing into next drop water aeration pond again after previous drop water aeration pond stops 1.5～3 hours, and the total time that in all drop water aeration ponds, stops is 3～6 hours, falls total head 6～9m;
(4) water outlet of drop water aeration pond gets into manpower rapid-infiltration land system, soil layer height 1.4～2.0m, soil layer hydraulic load 1.5～2.5m
3/ m
2D, the operation wet-dry ratio is 1d: 3d; Absorption through interception, filtration, absorption, aerobic oxidation, nitrification and denitrification and the soil layer top layer plant of soil ecosystem is minimized organism, nitrogen, phosphor contaminant matter in the sewage;
(5) water outlet of manpower rapid-infiltration land system gets final product qualified discharge behind disinfection by ultraviolet light;
The anaerobe reaction tank in said (2) step is a two-stage series connection, and the hydraulic detention time of each grade anaerobe reaction tank is 8～12 hours.
2. the sewage water treatment method of suitable reservoir area of Three Gorges according to claim 1 hilly small towns is characterized in that: the built-in water treatment filler in said drop water aeration pond, the volume packing ratio is 20～30%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910104273XA CN101597126B (en) | 2009-07-07 | 2009-07-07 | Sewage treatment method suitable for hilly small towns |
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|---|---|---|---|
| CN200910104273XA CN101597126B (en) | 2009-07-07 | 2009-07-07 | Sewage treatment method suitable for hilly small towns |
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| CN101597126B true CN101597126B (en) | 2012-05-23 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449666A (en) * | 2013-08-30 | 2013-12-18 | 中国地质大学（武汉） | Method for treating restaurant waste water by combination of aerobic microorganisms and soil adsorption |
| CN104478107A (en) * | 2014-12-03 | 2015-04-01 | 中国科学院南京地理与湖泊研究所 | Terrace-type drop aeration component and terrace-type drop aeration device |
| CN104891745B (en) * | 2015-06-11 | 2017-01-18 | 王舜和 | Upgrading and reconstruction method based on constructed rapid infiltration sewage treatment facility |
| CN106186317B (en) * | 2016-07-28 | 2019-05-03 | 西南交通大学 | A kind of artificial rapid infiltration system of strengthened denitrification |
| CN106904792A (en) * | 2017-03-06 | 2017-06-30 | 四川省登悦林木种植开发有限公司 | For the artificial marsh sewage treatment system in city suburbs montane park |
| CN107381795A (en) * | 2017-09-06 | 2017-11-24 | 湖南大辰环保科技有限公司 | A kind of modularization can be combined without aeration aerobic biochemical method of wastewater treatment and system |
| CN108249705A (en) * | 2018-02-02 | 2018-07-06 | 回音必集团安徽制药有限公司 | A kind of new and effective pharmacy sewage processing method |
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|---|---|---|---|---|
| US4209388A (en) * | 1978-11-06 | 1980-06-24 | Defraites Arthur A | Method and apparatus for treating sewage |
| CN2568634Y (en) * | 2001-06-05 | 2003-08-27 | 陈启松 | Urban sewage treatment system using oxygen rotary organism |
| CN1789175A (en) * | 2005-12-19 | 2006-06-21 | 东南大学 | Anoxia, drop aeration, artificial wetland combination type small-scale sewage dephosphorizing and denitrifying method |
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2009
- 2009-07-07 CN CN200910104273XA patent/CN101597126B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209388A (en) * | 1978-11-06 | 1980-06-24 | Defraites Arthur A | Method and apparatus for treating sewage |
| CN2568634Y (en) * | 2001-06-05 | 2003-08-27 | 陈启松 | Urban sewage treatment system using oxygen rotary organism |
| CN1789175A (en) * | 2005-12-19 | 2006-06-21 | 东南大学 | Anoxia, drop aeration, artificial wetland combination type small-scale sewage dephosphorizing and denitrifying method |
Non-Patent Citations (2)
| Title |
|---|
| 吴俊明等.浅谈复合式山地湿地污水处理系统在三峡库区的应用.《安全与环境工程》.2006,第13卷(第3期),第76-78页. * |
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