CN103693822A - Buried sewage treatment method - Google Patents
Buried sewage treatment method Download PDFInfo
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- CN103693822A CN103693822A CN201410031681.8A CN201410031681A CN103693822A CN 103693822 A CN103693822 A CN 103693822A CN 201410031681 A CN201410031681 A CN 201410031681A CN 103693822 A CN103693822 A CN 103693822A
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Abstract
The invention discloses a buried sewage treatment method, comprising the following steps: (1) feeding first-level sewage into a regulating reservoir which is buried under the ground or placed on the ground through a mechanical grid; (2) lifting the sewage inside the regulating reservoir to an A-level biochemical pool with filler to carry out biochemical treatment by adopting a sewage lift pump, so as to obtain second-level sewage; (3) enabling the second-level sewage processed in the A-level biochemical pool to flow into an O-level biochemical pool with the filler, so as to obtain three-level sewage by nitration reaction; (4) refluxing the three-level sewage to the A-level biochemical pool to carry out circular treatment, wherein the reflux ratio is 100-200%; and (5) discharging after circular treatment. The buried sewage treatment method has the advantages of being simple in operation, simple and convenient to install and the like, pollutants are efficiently degraded by using a bioaugmentation technology, in-situ and near treatment of domestic sewage can be achieved, and the recycling target of water resources is achieved. Thus, the buried sewage treatment method is widely applied to the fields such as urban communities, hotels and restaurants, tourism areas and new country communities step by step.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of buried sewage water treatment method.
Background technology
Sewage disposal (sewage treatment, wastewater treatment): be the water quality requirement that makes sewage reach a certain water body of draining or reuse, and the process that it is purified.Sewage disposal is widely used in building, agricultural, and the every field such as traffic, the energy, petrochemical industry, environmental protection, urban look, medical treatment, food and drink are also come into common people's daily life more and more.In recent years, in some developed areas of China, if the villages and small towns in the areas such as Yangtze River Delta, the Delta of the Pearl River are in political affairs
Under the planning and guidance of mansion, formed the Industrial Zone, villages and small towns of the industry bright characteristics such as numerous machinery, weaving, electronics, hydraulic pressure, cable, equipment manufacture of environmental protection.The waste water processing station of oneself is generally had in the enterprise that waste water generation is large in these Industrial Zones, villages and small towns, and what waste water generation was little is to take to entrust outward transport tupe.But in concentration zones, the sanitary sewage of enterprise is after three compartment septic tanks are processed, by sewage network, to enter the sewage pipe duct of villages and small towns periphery mostly.As local villages and small towns have wastewater treatment facility, enter wherein processing, as do not built wastewater treatment facility, directly enter villages and small towns, place surface water body.Taihu Lake, Jiangsu Cao Qiao river valley investigation of pollution sources shows, the sanitary sewage in Industrial Zone contains a small amount of lubricating oil, resin, metal ion, tensio-active agent (LAS), organism and emulsifying agent etc.These sewage are unprocessed, together with periphery village sanitary sewage, enter water body nearby, account for 77.6% and 59.1% of the total COD in this river, NH3-N.The village industry concentration zones sewage treatment facility of suiting measures to local conditions to set up dispersion, suitable scale is the urgent task that improves village industry concentration zones periphery ecotope.
Summary of the invention
The deficiency existing for prior art, technical problem to be solved by this invention is, a kind of with low cost, processing efficiency and degree for the treatment of of improving sanitary sewage is provided, removal effect to total nitrogen in sewage is obvious, and floor space is little, running cost is low, and is not subject to the buried sewage water treatment method of the restriction of the conditions such as area and temperature.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of buried sewage water treatment method, it is characterized in that, and comprise the steps:
(1), one-level sewage enters and is embedded in underground or placement equalizing tank on the ground through mechanical grid;
(2), sewage adopts sewage pump to be promoted to Packed A level biochemistry pool is installed and carries out biochemical treatment in equalizing tank, obtains B-grade sewage;
(3), the B-grade sewage of A level biochemistry pool after being disposed flow into Packed O level biochemistry pool be installed, and through nitration reaction, obtains three grades of sewage;
(4), three grades of sewage backflows carry out circular treatment to A level biochemistry pool, reflux ratio is set to 100%～200%;
(5), three grades of sewage after circular treatment reach emission standard and discharge.
Above-mentioned buried sewage water treatment method, in described A level biochemistry pool, dissolved oxygen is set to 0.2mg/l～0.4mg/l.
Above-mentioned buried sewage water treatment method, in described O level biochemistry pool, dissolved oxygen is set to 2mg/l～4mg/l, and steam-water ratio is set to 12 ﹕ 1.
Above-mentioned buried sewage water treatment method, in described step (4), three grades of sewage parts flow into vertical sedimentation basin, carry out solid-liquid separation, and the liquid after settling tank solid-liquid separation enters sterilization outlet sump, after sterilization, discharges.
Above-mentioned buried sewage water treatment method, the mud that described settling tank precipitates is promoted to sludge thickener by air-lift device, and the mud after concentrating in sludge thickener adopts dung-cart to operate the fertile processing of agriculture outward.
The advantage of the buried sewage water treatment method of the present invention is:
1, a complete set of equipment can be buried underground underground or place on the ground, and earth's surface, equipment top can be used as greening or other lands used, does not need to build a house and heating, insulation.2, two stage biological catalytic oxidation treatment process all adopts pulling flow type bio-contact oxidation, and its treatment effect is better than the hybrid or complete hybrid biological contact oxidation pond of two-stage tandem completely.And specific activity sludge sump volume is little, the strong adaptability to water quality, anti impulsion load performance is good, and stable effluent quality can not produce sludge bulking.In pond, adopt novel elastic 3-D filler, specific surface area is large, microorganism easy to be filmed, and demoulding, under same organic loading condition, high to organic removal rate, can improve airborne oxygen solubleness in water.3, biochemistry pool adopts biological contact oxidation process, and the volume load of its filler is lower, and microorganism is disconnected in autoxidation rank, and sludge output is few, the mud of (90 days) above row that only needs three months (with dung-cart suction or be dehydrated into mud cake outward transport).4, the deodorizing mode of this buried under earth type sewage treatment facility, except adopting the exhaust of conventional high-altitude, is separately furnished with soil deodorization measure.5, whole device processes system is furnished with Full automatic electric Controlling System, safe and reliable to operation, does not generally need at ordinary times personal management, only need in time to equipment, carry out care and maintenance.
6. biomass is large, and volumetric loading is high.
7. biological activity is high, and excess sludge is few.
8. without sludge bulking problem.
9. micro-pore aeration adopts membrane type pipeline oxygenator, does not stop up, oxygen-transfer efficiency is high, aeration is effective, energy saving.
10. adopt integrated design, technique is new, it is few to take up an area, and reduced investment, working cost are low, long service life.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further details;
The principle of work of the buried sewage water treatment method of the present invention is: NTGIE-I5 equipment is a kind of modular high-efficiency sewage biological treating equipment, a kind of sewage biological treatment system of microbial film as purification main body of take, sewage blocks dirt by grid and enters equalizing tank, in equalizing tank, sewage adopts sewage pump to be promoted to A level biochemistry pool, carries out biochemical treatment.In A level pond, because organic concentration in sewage is higher, microorganism is in anoxic condition, now microorganism is aerobic-anaerobic microbe, they are converted into ammonia nitrogen by organic nitrogen in sewage, utilize organic carbon source as electron donor simultaneously, NO2-N, NO3-N are converted into N2, but also utilize part organic carbon source and the synthetic new cellular material of ammonia nitrogen.So A level pond not only has certain organic matter removal function, alleviate the organic loading of follow-up O level biochemistry pool, be beneficial to nitrification and carry out, and rely on the high-enriched organics in sewage, complete denitrification, finally eliminate the eutrophication pollution of nitrogen.Through the biochemical action in A level pond, in sewage, still have a certain amount of organism and higher nitrogen ammonia to exist, for making the further oxygenolysis of organism, under carboniogenesis is tending towards completely situation, nitrification can be carried out smoothly simultaneously, and spy arranges O level biochemistry pool.The water outlet gravity flow of A level pond enters O level pond, the processing of O level biochemistry pool relies on autotroph (nitrifier) to complete, they utilize inorganic carbon source that organic substance decomposing produces or airborne carbonic acid gas as nutrition source, by the mineralized nitrogen in sewage, are NO2-N, NO3-N.An O level pond water outlet part enters settling tank and precipitates, and another part is back to A level pond and carries out internal recycle, to reach denitrifying object.In A level and O level biochemistry pool, filler is all installed, whole biochemical treatment process depends on that the multiple-microorganism that is attached on filler completes.In A level pond, dissolved oxygen is controlled at 0.5mg/l left and right; More than in O level biochemistry pool, dissolved oxygen is controlled at 2.0mg/l, gas-water ratio 12:1; O level biochemistry pool part effluent recycling enters A level pond, and reflux ratio is 100%-200%; A part flows into vertical sedimentation basin, carries out solid-liquid separation; Water outlet after settling tank solid-liquid separation enters sterilization outlet sump, after sterilization, can directly discharge.The mud that settling tank precipitates is promoted to sludge thickener by air-lift device; Mud after concentrated in sludge thickener adopts dung-cart to operate the fertile processing of agriculture outward..
Embodiment 1:
A kind of buried sewage water treatment method of the present invention, comprises the steps:
(1), one-level sewage enters and is embedded in underground or placement equalizing tank on the ground through mechanical grid;
(2), sewage adopts sewage pump to be promoted to Packed A level biochemistry pool is installed and carries out biochemical treatment in equalizing tank, obtains B-grade sewage, in A level biochemistry pool, dissolved oxygen is set to 0.2mg/l;
(3), the B-grade sewage of A level biochemistry pool after being disposed flow into Packed O level biochemistry pool be installed, in O level biochemistry pool, dissolved oxygen is set to 2mg/l～4mg/l, steam-water ratio is set to 12 ﹕ 1, through nitration reaction, obtains three grades of sewage;
(4), a part is back to A level biochemistry pool and carries out circular treatment in three grades of sewage, reflux ratio is set to 100%,
Another part flows into vertical sedimentation basin, carry out solid-liquid separation, liquid after settling tank solid-liquid separation enters sterilization outlet sump, after sterilization, discharge, the mud that settling tank precipitates is promoted to sludge thickener by air-lift device, and the mud after concentrating in sludge thickener adopts dung-cart to operate the fertile processing of agriculture outward;
(5), three grades of sewage after circular treatment reach emission standard and discharge.
Embodiment 2:
A kind of buried sewage water treatment method of the present invention, comprises the steps:
(1), one-level sewage enters and is embedded in underground or placement equalizing tank on the ground through mechanical grid;
(2), sewage adopts sewage pump to be promoted to Packed A level biochemistry pool is installed and carries out biochemical treatment in equalizing tank, obtains B-grade sewage, in A level biochemistry pool, dissolved oxygen is set to 0.3mg/l;
(3), the B-grade sewage of A level biochemistry pool after being disposed flow into Packed O level biochemistry pool be installed, in O level biochemistry pool, dissolved oxygen is set to 2mg/l～4mg/l, steam-water ratio is set to 12 ﹕ 1, through nitration reaction, obtains three grades of sewage;
(4), a part is back to A level biochemistry pool and carries out circular treatment in three grades of sewage, reflux ratio is set to 150%,
Another part flows into vertical sedimentation basin, carry out solid-liquid separation, liquid after settling tank solid-liquid separation enters sterilization outlet sump, after sterilization, discharge, the mud that settling tank precipitates is promoted to sludge thickener by air-lift device, and the mud after concentrating in sludge thickener adopts dung-cart to operate the fertile processing of agriculture outward;
(5), three grades of sewage after circular treatment reach emission standard and discharge.
Embodiment 3:
A kind of buried sewage water treatment method of the present invention, comprises the steps:
(1), one-level sewage enters and is embedded in underground or placement equalizing tank on the ground through mechanical grid;
(2), sewage adopts sewage pump to be promoted to Packed A level biochemistry pool is installed and carries out biochemical treatment in equalizing tank, obtains B-grade sewage, in A level biochemistry pool, dissolved oxygen is set to 0.4mg/l;
(3), the B-grade sewage of A level biochemistry pool after being disposed flow into Packed O level biochemistry pool be installed, in O level biochemistry pool, dissolved oxygen is set to 2mg/l～4mg/l, steam-water ratio is set to 12 ﹕ 1, through nitration reaction, obtains three grades of sewage;
(4), a part is back to A level biochemistry pool and carries out circular treatment in three grades of sewage, reflux ratio is set to 200%,
Another part flows into vertical sedimentation basin, carry out solid-liquid separation, liquid after settling tank solid-liquid separation enters sterilization outlet sump, after sterilization, discharge, the mud that settling tank precipitates is promoted to sludge thickener by air-lift device, and the mud after concentrating in sludge thickener adopts dung-cart to operate the fertile processing of agriculture outward;
(5), three grades of sewage after circular treatment reach emission standard and discharge.
System chief component: mechanical grille, equalizing tank, lift pump, integrated sewage treatment device, housing, the formations such as inlet and outlet pipe lines, wherein, buried under earth type sewage is processed integrated apparatus and altogether six parts, is consisted of: (1), A level biochemistry pool (2), O level biochemistry pool (3), settling tank (4), sterilization pool (5), sludge sump (6), Ventilator Room, it is few that blower fan NTGIE-I5 product systems possess facility investment, running cost is low, the advantages such as simple installation, utilize biological reinforcing technology to carry out efficient degradation to pollutent, can realize to sanitary sewage on the spot, process nearby, and reach the object of water resources recycling.This system is effectively supplemented as the sewage disposal of traditional wastewater treatment plant, progressively in human Settlements, cities and towns, the field such as hotel, tourist attraction, new rural community is used widely.
The whole process system of NTGIE-I5 Sewage treatment systems is controlled and is adopted import Schneider PLC as central controller, the mutual switching of the submersible sewage pump in major control equalizing tank, blower fan.
1, lift pump
Lift pump adopts anti-obstruction, tearing mode WQ submersible sewage pump, have spoil disposal ability strong, without stopping up, can effectively pass through the solid particulate of diameter 10mm.Equalizing tank lift pump adopts two, minute working barrel and stand-by pump, and the modulated pond of the startup ball float of water pump is controlled, float switch consists of the mercury of hermetic glass structure, outer foam plastics are made carrier, and ball float divides three according to equalizing tank liquid level, and controlled cabinet is controlled.
2, blower fan
The product that blower fan adopts Pepsi moral company to produce, model is HC-40IS, this fan noise is little, long service life.In system process, adopt blower fan to carry out blast aeration and in 24 hours, exchange use.When equalizing tank water pump stops, the 2 hours aerations in blower fan interval 0.5 hour, every Fans operation is automatically switched once for 24 hours, and this process is controlled by housing.
3, total system working routine is:
1), when equalizing tank sewage level is when termination of pumping water level is following, aeration and biological bed blower fan keeps stopping opening ten minutes half an hour, and water pump can not start.
2), when equalizing tank sewage level is below turn on pump water level, when termination of pumping water level is above, manual energy starts water pump 1 and water pump 2, blower fan is alternate run continuously.
3), when equalizing tank sewage level is when alarm water level is following, two Fans alternations, pump interrupted water operation, shuts down after following until sewage level is down to termination of pumping water level.
Because microcomputer control system possesses above function and feature, can make sewage disposal device fully automatic operation in 24 hours, both saved manpower, save energy again, and guarantee that sewage disposal reaches standard.
NTGIE-I5 integrated sewage treating apparatus body is steel corrosion, and pipeline is UPVC engineering plastics, and filler is second the third copolymerization, and aerator is corundum system, and each connecting parts of device interior is steel, the features such as antiseptic property is strong therefore equipment has, long service life.
The equipment (material) of seller's supply of material should design by the requirement of this technical specification book, inspection and test.
During equipment (material) is manufactured, whether the have the right seller of dispatch personnel inspection at any time and seller subcontractor's design, manufacture, inspection and test of the buyer meets the regulation of contract, Specification, project file, and checks and manufacture processing progress.
< < inspection provision (visualize and welding inspection) > > carries out suitable preparation guide is provided for selling direction buyer check.The seller's standard test program and plan (comprising project and progress) should be worked out by the seller, and in latter two month, submit to the buyer in the execution of contract.
The buyer's check or witness and can not remove the responsibility that the seller follows this technical specification book comprehensively.
Special Survey and the acceptance requirement of this technical specification book defined supplement, and can not replace any requirement of applied code standard and regulation.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement, all should belong to protection scope of the present invention.
Claims (5)
1. a buried sewage water treatment method, is characterized in that, comprises the steps:
(1), one-level sewage enters and is embedded in underground or placement equalizing tank on the ground through mechanical grid;
(2), sewage adopts sewage pump to be promoted to Packed A level biochemistry pool is installed and carries out biochemical treatment in equalizing tank, obtains B-grade sewage;
(3), the B-grade sewage of A level biochemistry pool after being disposed flow into Packed O level biochemistry pool be installed, and through nitration reaction, obtains three grades of sewage;
(4), three grades of sewage backflows carry out circular treatment to A level biochemistry pool, reflux ratio is set to 100%～200%;
(5), three grades of sewage after circular treatment reach emission standard and discharge.
2. buried sewage water treatment method according to claim 1, is characterized in that: in described A level biochemistry pool, dissolved oxygen is set to 0.2mg/l～0.4mg/l.
3. buried sewage water treatment method according to claim 2, is characterized in that: in described O level biochemistry pool, dissolved oxygen is set to 2mg/l～4mg/l, and steam-water ratio is set to 12 ﹕ 1.
4. buried sewage water treatment method according to claim 3, it is characterized in that: in described step (4), three grades of sewage parts flow into vertical sedimentation basin, carry out solid-liquid separation, the liquid after settling tank solid-liquid separation enters sterilization outlet sump, after sterilization, discharges.
5. buried sewage water treatment method according to claim 4, is characterized in that: the mud that described settling tank precipitates is promoted to sludge thickener by air-lift device, and the mud after concentrating in sludge thickener adopts dung-cart to operate the fertile processing of agriculture outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031681.8A CN103693822A (en) | 2014-01-24 | 2014-01-24 | Buried sewage treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410031681.8A CN103693822A (en) | 2014-01-24 | 2014-01-24 | Buried sewage treatment method |
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| CN103693822A true CN103693822A (en) | 2014-04-02 |
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| CN201410031681.8A Pending CN103693822A (en) | 2014-01-24 | 2014-01-24 | Buried sewage treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879487A (en) * | 2019-04-23 | 2019-06-14 | 常州机电职业技术学院 | A kind of buried filtration cycle of automobile washing environmental protection utilizes device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354144A (en) * | 2001-12-24 | 2002-06-19 | 徐祥圣 | Energy-saving underground embedded urban sewage treatment process |
| JP2003062588A (en) * | 2001-08-29 | 2003-03-04 | Hitachi Chem Co Ltd | Sewage purifier with pump tank, having underground smell stack and pump tank |
| CN201952323U (en) * | 2010-11-16 | 2011-08-31 | 扬州龙锦涂装环保设备有限公司 | Sewage-processing integration device for medical institution |
| CN102241457A (en) * | 2010-05-11 | 2011-11-16 | 江苏清溢环保设备有限公司 | Integrated underground economical sanitary sewage treatment apparatus |
| CN202124539U (en) * | 2011-06-20 | 2012-01-25 | 扬州龙锦涂装环保设备有限公司 | Underground integrated domestic sewage treatment device |
| CN102838250A (en) * | 2011-06-20 | 2012-12-26 | 扬州龙锦涂装环保设备有限公司 | Buried integrated domestic sewage treatment device |
| CN102897977A (en) * | 2012-10-12 | 2013-01-30 | 常州大学 | Method for treating domestic sewage in industrial concentration districts of villages and small towns |
| CN202881049U (en) * | 2012-09-23 | 2013-04-17 | 山东贝特尔环保科技有限公司 | Buried type sewage treatment device |
| CN203021403U (en) * | 2012-12-26 | 2013-06-26 | 天津中天海盛环保科技有限公司 | Buried integrated domestic sewage treatment device |
| CN203095810U (en) * | 2013-03-07 | 2013-07-31 | 青岛美福洋环保工程有限公司 | Buried sewage treatment device |
-
2014
- 2014-01-24 CN CN201410031681.8A patent/CN103693822A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062588A (en) * | 2001-08-29 | 2003-03-04 | Hitachi Chem Co Ltd | Sewage purifier with pump tank, having underground smell stack and pump tank |
| CN1354144A (en) * | 2001-12-24 | 2002-06-19 | 徐祥圣 | Energy-saving underground embedded urban sewage treatment process |
| CN102241457A (en) * | 2010-05-11 | 2011-11-16 | 江苏清溢环保设备有限公司 | Integrated underground economical sanitary sewage treatment apparatus |
| CN201952323U (en) * | 2010-11-16 | 2011-08-31 | 扬州龙锦涂装环保设备有限公司 | Sewage-processing integration device for medical institution |
| CN202124539U (en) * | 2011-06-20 | 2012-01-25 | 扬州龙锦涂装环保设备有限公司 | Underground integrated domestic sewage treatment device |
| CN102838250A (en) * | 2011-06-20 | 2012-12-26 | 扬州龙锦涂装环保设备有限公司 | Buried integrated domestic sewage treatment device |
| CN202881049U (en) * | 2012-09-23 | 2013-04-17 | 山东贝特尔环保科技有限公司 | Buried type sewage treatment device |
| CN102897977A (en) * | 2012-10-12 | 2013-01-30 | 常州大学 | Method for treating domestic sewage in industrial concentration districts of villages and small towns |
| CN203021403U (en) * | 2012-12-26 | 2013-06-26 | 天津中天海盛环保科技有限公司 | Buried integrated domestic sewage treatment device |
| CN203095810U (en) * | 2013-03-07 | 2013-07-31 | 青岛美福洋环保工程有限公司 | Buried sewage treatment device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879487A (en) * | 2019-04-23 | 2019-06-14 | 常州机电职业技术学院 | A kind of buried filtration cycle of automobile washing environmental protection utilizes device |
| CN109879487B (en) * | 2019-04-23 | 2023-12-29 | 常州机电职业技术学院 | Automobile cleaning environment-friendly buried type filtering recycling device |
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Application publication date: 20140402 |