CN105036331A - Northwest low-temperature region wastewater treatment method, and device thereof - Google Patents
Northwest low-temperature region wastewater treatment method, and device thereof Download PDFInfo
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- CN105036331A CN105036331A CN201510387035.XA CN201510387035A CN105036331A CN 105036331 A CN105036331 A CN 105036331A CN 201510387035 A CN201510387035 A CN 201510387035A CN 105036331 A CN105036331 A CN 105036331A
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Abstract
The invention discloses a northwest low-temperature region wastewater treatment method. According to the northwest low-temperature region wastewater treatment method, a sewage treatment device is adopted, wherein according to the sewage treatment device, anaerobic fermentation treatment and contact bio-oxidation are combined; a hydrolysis acidification pool is adopted so as to degrade soluble and insoluble large molecular organic matters in wastewater into small molecular organic matters, wastewater processed via degradation is fermented in an anaerobic fermentation pool so as to reduce COD content, a fermentation liquor obtained via fermentation is delivered into a contact oxidation pool via a thermal insulation pipeline using a lift pump, intermittent anoxic and aerobic conditions are created via intermittent top-down aeration in the contact oxidation pool so as to perform short-cut nitrification and denitrification, and improving removing effect of NH4+-N and P in wastewater; when water level of the contact oxidation pool is increased to an overflow water level, water is delivered into a collection tank via overflow, and at last, water is collected via a water outlet pipe. The temperature of wastewater of the northwest regions is low, and the northwest low-temperature region wastewater treatment method is used for solving a problem that wastewater biochemical treatment efficiency is low in low temperature environment.
Description
Technical field
The present invention relates to method and the device thereof of the low temp area sewage disposal of a kind of northwest, belong to environmental engineering water-treatment technology field.
Background technology
Along with the enforcement of strategy to develop western regions and central and west regions development strategy, NORTHWEST CHINA Regional City quantity and scale significantly improve, tourism and light industry industry cluster achievement constantly advance, the raising of city numbers and scale brings pressure also to environment aspect, can not go further and " first pollute in tourist area, the northwestward, rear improvement " old road, but the Northwest's temperature is low, the Climatic issues such as the temperature difference is large constrain the application prospect of eastern region water technology in the Northwest, therefore, the basis of biochemical treatment sanitary sewage is necessary can be economical in conjunction with a set of water treatment system of local climate condition design, the device of the sanitary sewage of low temp area, effective process northwest.
Larger molecular organics is degraded into small organic molecule by anaerobic treatment, thus reaches the object of the sewage of biochemical treatment, and meanwhile, it is active that the temperature brought in anaerobic fermentation process raises the process being conducive to improving microorganism, thus improve the removal efficiency of pollutent.Biological Contact Oxidation Process good airproof performance, the biomembranous biological load that filler is formed is large, is conducive to improving sewage treatment capacity, and biological contact oxidation plant can play good heat insulation effect under suitable design under non-aeration state simultaneously.Therefore, for the Northwest's low temperature, the inefficient defect of microbiological deterioration that the temperature difference is brought greatly, designs a set of anaerobically fermenting process and contacts bio-oxidation art breading this area sewage and just seem and be extremely necessary.
Summary of the invention
The object of the invention is, for solving the problems such as the degradation rate existed in the sewage disposal technology of low temp area, northwest is low, to provide method and the device thereof of the low temp area sewage disposal of a kind of northwest.
Technical scheme of the present invention is as follows:
The present invention is low temp area, so a kind of northwest sewage water treatment method, it have employed a kind of anaerobically fermenting process and the waste disposal plant contacting bio-oxidation and combine, hydrolysis acidification pool is utilized to make the solvability in sewage and non-solubility larger molecular organics be degraded into small organic molecule, sewage after degradation treatment is fermented in anaerobically fermenting pond, reduce wherein COD content, the fermented liquid that fermentation produces enters contact-oxidation pool by lift pump through utilidor, produce intermittence anoxic and aerobic condition at the top-down aeration of contact-oxidation pool intermittent thus form short distance nitration and denitrification improves NH in sewage
4 +the removal effect of-N and P, water level in contact-oxidation pool overflows to receiving tank after reaching overflow height, collects water outlet finally by rising pipe.The multistage filler of filtration is set at contact-oxidation pool, when packing filter blocking reaches the head loss of setting, to the air-water backwashing that filler carries out from bottom to top after making gas and water mixing after utilizing backwashing pump and pneumatic pump to open, back flushing muddy water is discharged by shore pipe.
A kind of anaerobically fermenting process of the present invention is such with contacting the waste disposal plant that bio-oxidation combines, it comprised hydrolytic action acidification pool, rise fermentative action anaerobically fermenting pond and work the contact-oxidation pool contacting biological oxidation; Acidification pool position is higher than anaerobically fermenting pond, and acidification pool upper and lower is connected with anaerobically fermenting pond with water pipe respectively by gas pipe line; Be provided with conduit bottom acidification pool and anaerobically fermenting pond and be delivered to contact-oxidation pool for being promoted by lift pump after being collected by current; Be provided with the filter packing of more than secondary in contact-oxidation pool, and be provided with shore pipe.
Overflow groove and rising pipe is provided with in the upper side of contact-oxidation pool.
Have the pipeline for making gas and water mixing at contact-oxidation pool side peripheral hardware, this pipeline one end is connected on contact-oxidation pool top, and an end is connected on bottom contact-oxidation pool, and this pipeline is provided with pneumatic pump and backwash pump.
The present invention is directed to the feature of the Northwest's municipal effluent low temperature, to solve for the purpose of the problem that biochemical wastewater treatment usefulness is low at low ambient temperatures, the one-level emission standard A making water outlet reach " urban wastewater treatment firm pollutant emission standard (GB18918-2002) " to specify.Occurring at hydrolysis acidification pool under city domestic sewage cold condition also can hydrolytic action, and residence time 2h, pH controls 6.8 ~ 7.2.Under acidulated condition, solvability and non-solubility larger molecular organics are converted into small organic molecule, and meanwhile, the organic acid produced in hydrolytic process is conducive to the biochemical improving sewage.Fermentative action is there is in hydrolysis acidification pool water outlet in anaerobically fermenting pond, residence time 6h, there is anaerobic reaction in the organism in sewage, reach the target of organic matter removal in fermentation vat, and the broth temperature that anaerobic reaction generates raises 3 DEG C and enters contact-oxidation pool by utilidor.
The intermittent aeration of contact-oxidation pool is conducive to being formed short distance nitration and denitrification thus improves NH
4 +the removal of-N and P, the biochemical film that filling surface is formed simultaneously plays good filteration and reduces delivery turbidity, and is conducive to the purification efficiency improving sewage.
Technique effect of the present invention:
One is that pH can be constant in 6.8 ~ 7.2 under cryogenic for hydrolysis acidification pool, and the hydrolytic action under acidified environment greatly reduces the ratio of larger molecular organics, is conducive to the purification efficiency improving whole treatment system.
Two is that the further COD of fermented liquid that anaerobically fermenting pond produces reduces greatly, and meanwhile, broth temperature improves 3 DEG C, is conducive to alleviating the disadvantageous effect of low temperature environment to microbiological deterioration.
Three is strainabilities that the multistage filler of contact-oxidation pool substantially increases filler, thus reduces delivery turbidity, and filling surface forms microbial film has very strong removal effect to BOD, COD; Intermittence aeration is conducive to short distance nitration and denitrification occur in pond, thus improves the NH of sewage
4 +the removal effect of-N and P.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention;
Description of reference numerals: 1-water inlet pipe, 2-acidification pool, 3-anaerobically fermenting pond, 4-escape pipe, 5-lift pump, 6-rising pipe, 7-filler, 8-shore pipe, 9-backwash pump, 10-contact-oxidation pool, 11-pneumatic pump.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, the agent structure of device of the present invention forms primarily of three parts, foremost be acidification pool 2, water inlet pipe 1 is from top access acidification pool 2, anaerobically fermenting pond 3 after acidification pool 2, be contact-oxidation pool 10 after anaerobically fermenting pond 3, rising pipe 6 is connected on the side of contact-oxidation pool 10 by an overflow groove.The device height of acidification pool 2 and liquid level, all higher than anaerobically fermenting pond 3, make the sewage in acidification pool 2 can enter anaerobically fermenting pond 3 by pipeline self.In addition, in the middle part of anaerobically fermenting pond 3, ullage in anaerobically fermenting pond 3 is accessed from acidification pool 2 Base top contact pneumatic tube.Bottom acidification pool 2 and anaerobically fermenting pond 3, be provided with funnel and pipeline fermented liquid is collected enter in a pipeline, and by lift pump 5, sewage lifting be delivered in contact-oxidation pool 10.Pipeline is provided with by-pass valve control everywhere.
The filler 7 of the filtration of more than secondary is provided with in contact-oxidation pool 10, shore pipe 8 is provided with bottom contact-oxidation pool 10, the pipeline for making gas and water mixing is provided with in contact-oxidation pool 10 side, this pipeline one end is connected on contact-oxidation pool top, one end is connected on bottom contact-oxidation pool, this pipeline is provided with pneumatic pump 11 and backwash pump 9, and backwash pump 9 is positioned at bottom, and pneumatic pump 11 is positioned at middle part.
The present invention implements like this:
City domestic sewage enters hydrolysis acidification pool 2 by water inlet pipe 1, hydrolytic action is there is in hydrolysis acidification pool 2, solvability and non-solubility larger molecular organics is made to be degraded into small organic molecule, thus improve the degradation property of pollutent at follow-up structures, meanwhile, the organic acid formed in the anaerobism production process occurred in hydrolysis acidification pool 2 is conducive to biochemical sewage Degradation.Anaerobically fermenting pond 3 is entered after hydraulic detention time 2h in hydrolysis acidification pool 2, residence time 6h in anaerobically fermenting pond 3, during the fermentation, COD reduces greatly, the gases such as the methane simultaneously generated are collected by air outlet 4, the fermented liquid that fermentation produces enters contact-oxidation pool 10 by lift pump 5 through utilidor, opens pneumatic pump 11, produces intermittence anoxic and aerobic condition thus form short distance nitration and denitrification improves NH at the top-down aeration of contact-oxidation pool 10 intermittent
4 +the removal effect of-N and P.Multistage filler 7 in contact-oxidation pool 10 improves the filteration to sewage, reduces the delivery turbidity of sewage, and the microbial film that surface is formed simultaneously is conducive to the purification efficiency improving pollutent.When packing filter blocking reaches the head loss of setting, to the air-water backwashing that filler carries out from bottom to top after backwash pump 9 and pneumatic pump 11 make gas and water mixing after opening, back flushing muddy water is discharged by shore pipe 8.In contact-oxidation pool 10 after water level reach a certain height, overflow to receiving tank, collect water outlet by rising pipe 6.
Below this waste disposal plant actual motion take off data table:
Certainly, more than just embody rule example of the present invention, the technical scheme that the present invention also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within protection domain of the presently claimed invention.
Claims (5)
1. low temp area, northwest sewage water treatment method, it is characterized in that: it have employed a kind of anaerobically fermenting process and the waste disposal plant contacting bio-oxidation and combine, hydrolysis acidification pool is utilized to make the solvability in sewage and non-solubility larger molecular organics be degraded into small organic molecule, sewage after degradation treatment is fermented in anaerobically fermenting pond, reduce wherein COD content, the fermented liquid that fermentation produces enters contact-oxidation pool by lift pump through utilidor, produce intermittence anoxic and aerobic condition at the top-down aeration of contact-oxidation pool intermittent thus form short distance nitration and denitrification improves NH in sewage
4 +the removal effect of-N and P, water level in contact-oxidation pool overflows to receiving tank after reaching overflow height, collects water outlet finally by rising pipe.
2. low temp area, northwest according to claim 1 sewage water treatment method, it is characterized in that: the multistage filler that filtration is set at contact-oxidation pool, when packing filter blocking reaches the head loss of setting, to the air-water backwashing that filler carries out from bottom to top after making gas and water mixing after utilizing backwashing pump and pneumatic pump to open, back flushing muddy water is discharged by shore pipe.
3. anaerobically fermenting process and the waste disposal plant contacting bio-oxidation and combine, is characterized in that: it comprised hydrolytic action acidification pool (2), play the anaerobically fermenting pond (3) of fermentative action and to contact the contact-oxidation pool (10) of biological oxidation; Acidification pool (2) position is higher than anaerobically fermenting pond (3), and acidification pool (2) upper and lower is connected with anaerobically fermenting pond (3) with water pipe respectively by gas pipe line; Acidification pool (2) and anaerobically fermenting pond (3) bottom are provided with conduit and are delivered to contact-oxidation pool (10) by lift pump (5) lifting after being collected by current; Be provided with the filter packing of more than secondary in contact-oxidation pool (10), and be provided with shore pipe (8).
4. anaerobically fermenting process according to claim 3 and the waste disposal plant contacting bio-oxidation and combine, is characterized in that: be provided with overflow groove and rising pipe (6) in the upper side of contact-oxidation pool (10).
5. anaerobically fermenting process according to claim 4 and the waste disposal plant contacting bio-oxidation and combine, it is characterized in that: have the pipeline for making gas and water mixing at contact-oxidation pool (10) side peripheral hardware, this pipeline one end is connected on contact-oxidation pool (10) top, one end is connected on contact-oxidation pool (10) bottom, and this pipeline is provided with pneumatic pump (11) and backwash pump (9).
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| CN201510387035.XA CN105036331A (en) | 2015-07-06 | 2015-07-06 | Northwest low-temperature region wastewater treatment method, and device thereof |
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| CN201510387035.XA CN105036331A (en) | 2015-07-06 | 2015-07-06 | Northwest low-temperature region wastewater treatment method, and device thereof |
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| CN107055951A (en) * | 2017-03-14 | 2017-08-18 | 北京化工大学 | A kind of biological treatment of amino acid wastewater |
| CN107973404A (en) * | 2017-12-06 | 2018-05-01 | 杭州电子科技大学 | The method of redox mediators regulation and control debirs orientation fermentation production acetic acid coupled low temperature denitrification denitrogenation |
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Cited By (2)
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Application publication date: 20151111 |