CN103241843B - The Thermal insulation biological medium oxidation treatment method of sanitary sewage - Google Patents
The Thermal insulation biological medium oxidation treatment method of sanitary sewage Download PDFInfo
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- CN103241843B CN103241843B CN201310198582.4A CN201310198582A CN103241843B CN 103241843 B CN103241843 B CN 103241843B CN 201310198582 A CN201310198582 A CN 201310198582A CN 103241843 B CN103241843 B CN 103241843B
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Abstract
The Thermal insulation biological medium oxidation treatment method of the open one way of life sewage of the present invention, comprises the steps: that (1) removes the solid impurity in sanitary sewage; (2) sanitary sewage processed through step (1) is undertaken being oxidized by microbiological media and the process of dephosphorization denitrogenation, organics removal; (3) sanitary sewage processed through step (2) is sent into the denitrification pond adding carbon source and carry out denitrification process; In step (2), the temperature of microbiological media is remained between 10 DEG C ~ 50 DEG C.The invention has the advantages that little to the process of sanitary sewage investment, working cost is low, maintenance management is easy, stable, non-secondary pollution, not by area and seasonal effect, effluent quality can meet the water quality standard of view surface water.
Description
Technical field
The present invention relates to sanitary sewage disposal technical field, particularly the Thermal insulation biological medium oxidation treatment method of sanitary sewage.
Background technology
Show according to pertinent data, useless (dirt) water total emission volumn annual by the end of China in 2010 has reached 62,000,000,000 tons, wherein most ofly unprocessedly just directly enter rivers and lakes, the lake of nearly 1/4th is had to receive pollution in various degree, the city of nearly 60% is had not have sewage work, the sanitary sewage of Rural areas is substantially untreated just directly to be discharged, and domestic sewage in rural areas administers the construction having had influence on modern new rural village.China is large agricultural country, populous nation, water resources critical shortage, and water resources ownership per capita only 2200 cubic metres is world occupancy volume per person's 1/4, and is listed in one of 13 poor-water countries.Drop to 1700 to 1800 cubic metres to the year two thousand thirty China's water resources ownership per capita by from present 2200 cubic metres, water requirement can the amount of exploitation close to water resources, and water shortage problem will be more outstanding.
Current national rural area produces sanitary sewage about 8,000,000,000 tons every year, and the village of 90% does not have discharge conduit and Sewage treatment systems.Undressed sanitary sewage discharges wantonly, the severe contamination ecotope in rural area, directly threatens the Economic development in the healthy and rural area of the vast farmers masses.Undressed sanitary sewage flows automatically to physical features and is in the surface water bodies such as low-lying river, lake and pond, all kinds of water source of severe contamination.Meanwhile, sanitary sewage is the source of disease propagation diffusion, easily causes the Occurrence & epidemic of some areas transmissible disease, endemy and zoonosis.Generally speaking, China's domestic sewage in rural areas has that dispersion is wide, source is many, increases soon, complicated component, water quality and the water yield change large feature.
In view of the present situation that economic situation poor and level of management in Rural areas are lower, need a kind of capital construction and running cost is low, management simple, treatment effect is good, Ecosystem Service is good decentralized wastewater ecological treatment method.
Summary of the invention
The object of the invention is the Thermal insulation biological medium oxidation treatment method that will provide one way of life sewage, what can solve in above-mentioned prior art problem is one or more.
According to an aspect of the present invention, provide the Thermal insulation biological medium oxidation treatment method of one way of life sewage, comprise step: (1) removes the solid impurity in sanitary sewage; (2) sanitary sewage processed through step (1) is undertaken being oxidized by microbiological media and the process of dephosphorization denitrogenation, organics removal; (3) sanitary sewage processed through step (2) is sent into the denitrification pond adding carbon source and carry out denitrification process.In step (2), the temperature of microbiological media is remained between 10 DEG C ~ 50 DEG C.
The process investment of Thermal insulation biological medium oxidation treatment method to sanitary sewage of sanitary sewage of the present invention is little, working cost is low, maintenance management is easy, stable, non-secondary pollution, not by area and seasonal effect, effluent quality can meet the water quality standard of view surface water.
In some embodiments, in step (2), the temperature of microbiological media is remained on 15 DEG C ~ 40 DEG C.Thus, microorganism can have good activity, comparatively thorough to the organic interception in sewage, absorption, decomposition and conversion.
In some embodiments, in step (2), the temperature of microbiological media is remained on 25 DEG C ~ 35 DEG C.Thus, microorganism can have good activity, very thorough to the organic interception in sewage, absorption, decomposition and conversion.
In some embodiments, the carbon in carbon source is 5:1 with the content ratio of nitrogen.Adopt the carbon-nitrogen ratio of 5:1, better to the denitrification treatment effect of sewage.
In some embodiments, filtered by grid or graticule mesh in step (1), and the precipitator method, remove the solid impurity in sanitary sewage.Thus, there is the effect that operation is simple, without the need to manual labor.
In some embodiments, the sanitary sewage that will process through step (1) in step (2) sends into microbiological media oxidizer, is undertaken being oxidized and the process of dephosphorization denitrogenation, organics removal by microbiological media.Thus, the flow of sewage by microbiological media can be controlled, control to remove the organic treatment effect in sewage.
In some embodiments, in step (2), microbiological media oxidizer is placed in below frozen soil layer.Because the temperature below frozen soil layer remains on more than 0 DEG C throughout the year, can save energy, and do not exhale an offensive odor.
In some embodiments, in step (2), oxygen supply is carried out to microbiological media.Thus, microbial growth can be promoted.
In some embodiments, by lift pump, the sanitary sewage in hydrolyzing regulation pond is injected microbiological media oxidizer, by gas blower to microbiological media oxygen supply, by air source heat pump heating microbiological media oxidizer.Thus, can automatic sanitary sewage processing be realized, reduce the cost of manual labor.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of step (2) in the Thermal insulation biological medium oxidation treatment method of the sanitary sewage of one embodiment of the present invention.
Embodiment
The invention will be further described by the following examples, but protection domain is not by the restriction of these embodiments.
First sanitary sewage removes the solid refuse such as plastics bag, cloth foreign material through grid or graticule mesh, and then enter inorganics preliminary sedimentation tank and leave standstill (i.e. the precipitator method), the inorganics that some proportions such as sand are larger, particulate matter can be deposited in the bottom of inorganics preliminary sedimentation tank.The water outlet of inorganics preliminary sedimentation tank enters hydrolyzing regulation pond, and hydrolyzing regulation pond is collected all kinds of sewage and made it abundant mixing, and stops 6-8 hour, guarantees stable effluent quality.Sent into microbiological media oxidizer from hydrolyzing regulation pond by sewage at regular time and quantity by lift pump and carry out being oxidized and the process of dephosphorization denitrogenation, the organism in sewage be attached to the filler interception of the various microbiological media such as genus bacillus, candidiasis and Penicillium notatum, absorption in a large number, decomposes and transform and remove in microbiological media oxidizer.Enter by the water outlet after microbiological media oxidizer the denitrification pond adding carbon source again and carry out denitrification process, the final outflow water indices after denitrification process is all up to standard.
The water outlet of microbiological media oxidizer enters denitrification pond, denitrification provides carbon source in pond, and this carbon source mainly comes from raw waste water, and supplementary raw waste water accounts for the 1/6-1/4 of total Water, carbon wherein in carbon source can be 6 ~ 4:1 with the content ratio of nitrogen, adopts 5:1 effectiveness comparison good.The indexs such as the total nitrogen total phosphorus of final outflow water all reach primary standard B standard in GB18918-2002 (claiming " standard " in table 1), as shown in table 1.The water outlet of denitrification pond is discharged after entering under meter letdown tank.
In order to microbial growth, effective oxygen supply can be carried out to microbiological media filler at regular time and quantity by gas blower.
In order to ensure in the winter time and northern area temperature is lower when microorganism also can survive preferably, be also specially provided with heat-insulation system in present method, the temperature of microbiological media remained between 10 DEG C ~ 50 DEG C.First microbiological media insulation way is that microbiological media oxidizer is imbedded below frozen soil layer, and second microbiological media insulation way uses air source heat pump to heat microbiological media oxidizer efficiently, in time.
Fig. 1 show schematically show the processing mode of the step (2) in the Thermal insulation biological medium oxidation treatment method of a kind of sanitary sewage.
As shown in Figure 1, the pond that a degree of depth is 1.7 meters is set below frozen soil layer 2, adds in pond by the filler that attached to the microbiological medias 3 such as genus bacillus, candidiasis, Penicillium notatum in a large number, become microbiological media oxidizer 4.Pond body surrounding clay is tamped, and lays one deck artificial soil 1 above frozen soil layer 2, thick 0.8 meter of artificial soil 1.Below frozen soil layer 2, water inlet pipe 5 is placed at 0.1 meter of, started 20 minutes by the sanitary sewage in water quality regulation pond sent in microbiological media oxidizer 4 by water inlet pipe 5 by every 3 hours of lift pump and carry out being oxidized and the process of dephosphorization denitrogenation, the organism in sewage be attached to the interception of the microbiological medias such as genus bacillus, candidiasis, Penicillium notatum 3 filler, absorption in a large number microbiological media oxidizer 4 in, decompose and conversion and removing.Stop 1 minute after gas blower often works 5 minutes, effectively oxygen supply is carried out to microbiological media 3 filler by inlet pipe 6.The lagging material of microbiological media oxidizer 4 periphery parcel thick layer 10 centimetres, cold district or every 3 hours of winter once, within each 40 minutes, by air source heat pump, microbiological media oxidizer 3 is heated, make temperature range control between 10 DEG C ~ 50 DEG C, keep microbic activity.Sanitary sewage enters denitrification pond by rising pipe 7 again by the water outlet after microbiological media oxidizer 4, and final outflow water indices after denitrification is all up to standard.
Startup and the stopping of lift pump, gas blower and air source heat pump can be controlled by control device, make the Thermal insulation biological medium oxidation treatment method of sanitary sewage of the present invention realize unmanned and stably carry out the process of sanitary sewage, saving manual labor's cost.
Influent quality parameter, in the urban wastewater treatment firm pollutant emission standard GB18918-2002 design parameter of primary standard B standard of table 1 for determining according to the parameter of relevant environmental administration and sewage of the same type, and during differing temps between 10 DEG C ~ 50 DEG C of 27 microbiological medias, the embodiment of the water quality parameter of sanitary sewage after method process of the present invention, the carbon wherein in carbon source is 5:1 with the content ratio of nitrogen.Primary standard B standard in GB18918-2002 is met or exceeded completely by the visible sanitary sewage of this table water quality after treatment.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Table 1:
Illustrate: unit is mg/L (except PH, colourity, colibacillus of excrement), and sewage drainage standard is one-level B standard.
Claims (6)
1. the Thermal insulation biological medium oxidation treatment method of sanitary sewage, comprises the steps:
(1) solid impurity in sanitary sewage is removed;
(2) sanitary sewage processed through described step (1) to be oxidized by microbiological media oxidizer and the process of dephosphorization denitrogenation, organics removal;
(3) sanitary sewage processed through described step (2) is sent into the denitrification pond adding carbon source and carry out denitrification process;
It is characterized in that: in described step (2), the temperature of the filler of the microbiological media genus bacillus in described microbiological media oxidizer, candidiasis, Penicillium notatum is remained on 25 DEG C ~ 35 DEG C; In denitrification pond described in described step (3), carbon source is provided by raw waste water, and the raw waste water wherein supplemented accounts for the 1/4-1/6 of denitrification pond total Water, and the carbon in described carbon source is 6 ~ 4:1 with the content ratio of nitrogen.
2. the Thermal insulation biological medium oxidation treatment method of sanitary sewage according to claim 1, is characterized in that: the carbon in described carbon source is 5:1 with the content ratio of nitrogen.
3. the Thermal insulation biological medium oxidation treatment method of sanitary sewage according to claim 1, is characterized in that: wherein in step (2), the filler temperature of the microbiological media genus bacillus in described microbiological media oxidizer, candidiasis, Penicillium notatum is remained on 25 DEG C ~ 30 DEG C.
4. the Thermal insulation biological medium oxidation treatment method of sanitary sewage according to claim 1, it is characterized in that: the oxidation pond of described microbiological media oxidizer is built in below frozen soil layer by step (2), the below of frozen soil layer arranges a pond, add by the filler that attached to genus bacillus, candidiasis, Penicillium notatum microbiological media 3 in a large number in pond, pond body surrounding clay is tamped, and also need lay one deck artificial soil above frozen soil layer.
5. the Thermal insulation biological medium oxidation treatment method of sanitary sewage according to claim 1, is characterized in that: described microbiological media oxidizer adopts gas blower to be interrupted oxygen supply.
6. the Thermal insulation biological medium oxidation treatment method of sanitary sewage according to claim 1, is characterized in that: described microbiological media oxidizer adopts air heat source pump to keep homo(io)thermism.
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Citations (6)
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| US5185080A (en) * | 1990-06-04 | 1993-02-09 | Gregory Boyle | Process for the on-site removal of nitrates from wastewater |
| CA2086700A1 (en) * | 1991-02-28 | 1994-07-06 | Gregory Boyle | Method and Device for Small System Wastewater Denitrification |
| CN1420848A (en) * | 1999-07-12 | 2003-05-28 | 克莱沃有限公司 | Method of purifying water, suitable bacteria for said method and use thereof |
| CN2913351Y (en) * | 2005-12-26 | 2007-06-20 | 陈勇 | Laminated push-flow type anaerobic filter |
| CN101259977A (en) * | 2007-12-28 | 2008-09-10 | 凌亮 | Method for removing total nitrogen by using microorganism |
| CN201581029U (en) * | 2009-09-27 | 2010-09-15 | 中国农业大学 | Rural sewage treatment plant for northern household |
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2013
- 2013-05-24 CN CN201310198582.4A patent/CN103241843B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5185080A (en) * | 1990-06-04 | 1993-02-09 | Gregory Boyle | Process for the on-site removal of nitrates from wastewater |
| CA2086700A1 (en) * | 1991-02-28 | 1994-07-06 | Gregory Boyle | Method and Device for Small System Wastewater Denitrification |
| CN1420848A (en) * | 1999-07-12 | 2003-05-28 | 克莱沃有限公司 | Method of purifying water, suitable bacteria for said method and use thereof |
| CN2913351Y (en) * | 2005-12-26 | 2007-06-20 | 陈勇 | Laminated push-flow type anaerobic filter |
| CN101259977A (en) * | 2007-12-28 | 2008-09-10 | 凌亮 | Method for removing total nitrogen by using microorganism |
| CN201581029U (en) * | 2009-09-27 | 2010-09-15 | 中国农业大学 | Rural sewage treatment plant for northern household |
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Effective date of registration: 20151021 Address after: 237000 cross two road, Lu'an Economic Development Zone, Anhui, China Applicant after: ANHUI MEIZIRAN ENVIRONMENT TECHNOLOGY CO., LTD. Address before: 602, room 6, building 230088, Shushan new village, 246 West Changjiang Road, Shushan District, Anhui, Hefei Applicant before: Ge Anran |
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