CN204550203U - A kind of buried microkinetic anaerobism waste disposal plant - Google Patents
A kind of buried microkinetic anaerobism waste disposal plant Download PDFInfo
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- CN204550203U CN204550203U CN201520211861.4U CN201520211861U CN204550203U CN 204550203 U CN204550203 U CN 204550203U CN 201520211861 U CN201520211861 U CN 201520211861U CN 204550203 U CN204550203 U CN 204550203U
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- anaerobic pond
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Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model discloses a kind of buried microkinetic anaerobism waste disposal plant, belong to sanitary sewage disposal technology and field of sewage treatment equipment; This device comprises: the first anaerobic pond, the second anaerobic pond, oxygen compatibility pool, settling tank; Described first anaerobic pond adopts and falls streaming anaerobic pond, and top intakes, bottom water outlet; Described second anaerobic pond adopts flow lifting type anaerobic pond, and bottom intakes, top water outlet; Oxygen compatibility pool mixed-liquor return to the second anaerobic pond; Arrange mud discharging pipe bottom described settling tank, excess sludge is disposed to sludge sump by sludge pump; The utility model is flush-with-ground type sewage treating device, surface soil can carry out afforesting etc. utilization further, be specially adapted to the centralized or distributing rural domestic sewage treatment in Small Urban, be also applicable to water quality close to the lower concentration organic industrial sewage process of sanitary sewage and regeneration.
Description
Technical field
The utility model belongs to wastewater treatment and resource utilization field, is specifically related to a kind of buried microkinetic anaerobism waste disposal plant.
Background technology
Comprising the various of town domestic sewage can the treatment process technique study of waste water of biochemical treatment and the existing history for many years of application, and main technique has biochemical method and physico-chemical process.Particularly biochemical processing method is used widely in town domestic sewage process.In rural areas in our country, a large amount of distributing breeding wastewater, sanitary sewage and pollution of area source enter surface water body, form grave danger to water surrounding.At present, traditional sewage treatment process exists that process energy consumption is high, capacity of resisting impact load is poor, floor space is large, sewage works exists the deficiencies such as negatively influencing to surrounding environment, seriously restricts the efficiency of town sewage especially rural sewage treatment.Therefore, new less energy-consumption, capacity of resisting impact load by force, do not take soil, earth's surface, do not produce environmental pollution and require that low microkinetic domestic sewage treatment process becomes necessary technical requirements to sewage source.The utility model is not only applicable to the centralized or distributing rural domestic sewage treatment in Small Urban, also be applicable to the organic industrial sewage process of water quality close to sanitary sewage, its buried microkinetic anaerobic treatment process has practicality widely to sewage disposal and recycling.
Utility model content
The purpose of this utility model is on existing anaerobe membrane process basis, a kind of buried microkinetic anaerobism waste disposal plant of one that two-stage anaerobic biochemical treatment and microkinetic aerobic treatment organically combine and propose by feature not up to standard for single anaerobic treatment effluent quality, aerobic treatment working cost is high.The implication of UMAR is underground micropower anaerobic reactor, i.e. buried microkinetic anaerobic reactor.Its core is the combination utilizing two-stage series connection anaerobic pond, oxygen compatibility pool, settling tank in buried situation, makes sanitary sewage be no more than 0.1kwh/m in ton water treatment energy consumption
3under the operation energy consumption of sewage, reach more than the one-level B standard of " urban wastewater treatment firm pollutant emission standard " (GB18918-2002).
The utility model adopts following technical scheme for achieving the above object:
A kind of buried microkinetic anaerobism waste disposal plant, described device comprises biochemical treatment part and settling tank, described biochemical treatment part is integrated, sewage flows through the first anaerobic pond, the second anaerobic pond and oxygen compatibility pool successively, enter settling tank from the water outlet of oxygen compatibility pool by pipeline, in each pond, be provided with combined stuffing; Output terminal one end of settling tank is discharge ends, and one end is mud discharging end; Return line is provided with between described oxygen compatibility pool and the second anaerobic pond; Under described biochemical treatment part and settling tank are all arranged on bottom surface, each part of biochemical treatment part is provided with inlet pipe, and inlet pipe contacts with air through ground; Described oxygen compatibility pool is provided with aerator, and aerator is connected with the blower fan on ground by pipeline.
In technique scheme, described first anaerobic pond is for falling streaming structure, and the top of the first anaerobic pond is provided with perforation water distributor, and the water outlet of the bottom of anaerobic pond is connected with the water-in of the second anaerobic pond for the first time.
In technique scheme, described second anaerobic pond is flow lifting type structure, and the bottom of the second anaerobic pond is provided with perforation water distributor and is connected with the water outlet of the first anaerobic pond, and the bottom of the second anaerobic pond is that water outlet is connected with oxygen compatibility pool.
In technique scheme, the bottom of described oxygen compatibility pool is provided with aerator, and the bottom of oxygen compatibility pool is provided with return line is connected with the second anaerobic pond, and described return line is provided with pump.
In technique scheme, the delivery port of described return line is arranged on the feed-water end of the second anaerobic pond.
In technique scheme, described filler adopts hydroformylation fiber combinations filler.
Compared with prior art, its technical superiority is mainly reflected in the utility model:
(1) working cost is low.Its main energy consumption is mainly reflected in lift pump and low power blower fan two parts, is the 1/5-1/10 of traditional AAO process operation expense.
(2) construction cost is low, processes its useful volume of the same water yield little.Mud in anaerobic biological pond is made up of the microbial population in the microbial population of microbial film form of fixed growth and the anaerobic activated sludge of suspension growth, and sludge concentration can reach 20-30g/L.Because microorganism growth is on filler, do not run off with water outlet, therefore extend the residence time and mud age of mud, thus when identical treatment effect, ask when just shortening the hydraulic retention of waste water in reactor.And do not need sludge reflux, making operational management relative ease, restarting after out of service also than being easier to.
(3) compare with anaerobic contact method with common anaerobic nitrification pond, the biochemical unit of two-stage anaerobic is when processing solvability high-concentration organic industrial waste water, and volumetric loading can up to 16kgC0D
cr/ (m
3d), the volume of reactor is made greatly to reduce.Engineering practice shows, when the ambient conditionss such as temperature are identical, the load of two-stage anaerobic biochemistry pool can exceed 2 ~ 3 times of anaerobic contact method, and has higher C0D clearance, can reach 70-90%.
(4) regularity of distribution of anaerobic sludge in UMAR makes the adaptive faculty of reactor to toxic substance stronger, be easy to turn out the anaerobic sludge adapting to toxic substance in pond, the concentration of biodegradable toxicant in reactor also presents regular change.Therefore, when the process water yield and load have larger change, its operation can keep larger stability.
(5) the start-up method of UMAR buried microkinetic anaerobism integrated sewage treating apparatus is substantially identical with UASB method, can adopt directly to cultivate or ask to connect culture method.But owing to having filler as carrier, seem comparatively easy, when various condition is all applicable to, general only needs can complete for 25 ~ 40 days.
(6) UMAR buried microkinetic anaerobism integrated sewage treating apparatus can be applicable to various dissimilar waste water, comprises common sanitary sewage and other lower concentration organic industrial sewages.
(7) adopt buried structure, surface can be afforested, and is conducive to the further utilization on earth's surface and beautifies, and while disposing of sewage, the construction in garden landscape park is organically combined, has good social effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein: 1 be anaerobic pond 1,2 are anaerobic ponds 2,3 are oxygen compatibility pools, 4 are settling tanks, 5 are perforation water distributors, 6 are fillers, 7 are mixed-liquor return pipes, 8 are ventpipes, 9 are low-power fan, 10 be micro-hole aerator and air line, 11 is sump pumps.
Embodiment
As shown in Figure 1, buried microkinetic anaerobism waste disposal plant described in the utility model comprises the unit such as the first anaerobic pond, the second anaerobic pond, oxygen compatibility pool, settling tank and sterilization equipment.Sewage enters the first anaerobic pond, the second anaerobic pond, oxygen compatibility pool, settling tank and sterilization equipment successively after pre-treatment.Oxygen compatibility pool mixed-liquor return to the second anaerobic pond, settling tank excess sludge is all disposed to sludge sump outward transport.
Buried microkinetic anaerobism waste disposal plant is made up of two-stage anaerobic biochemical treatment and one-level microkinetic aerobic treatment.Anaerobic biochemical treatment unit is made up of the first anaerobic pond and the second anaerobic pond, is the core processing unit of buried microkinetic anaerobism waste disposal plant.First anaerobic pond and the second anaerobic pond is in-built is filled with as microorganism provides the particular fillers in the surface of apposition growth and the space of suspension growth.Have with the microbial population of microbial film form growth on the surface of anaerobic biological filler, constitute the major portion of anaerobic biological unit anaerobion, and be trapped within the space between filler, microbial population in the anaerobic activated sludge of suspension growth, be the secondary part of anaerobic biological unit anaerobion.When sewage flows through packing layer, wherein organism is retained by anaerobion, adsorbs and metabolic breakdown, finally reaches stabilization, produces biogas simultaneously, forms new microbial film.
In order to prevent filler from blocking and ensureing better organic matter removal efficiency, the first anaerobic pond adopts and falls streaming water flow mode, and the second anaerobic pond adopts flow lifting type water flow mode, the organic series connection of two-stage anaerobic biochemical treatment unit.
In anaerobic treatment process, the organism in waste water, through the acting in conjunction of a large amount of microorganism, is finally converted into methane, carbonic acid gas, water, hydrogen sulfide and ammonia etc.In the process, the metabolic process of different microorganisms influences each other, and mutually restricts, and defines the complicated ecosystem.The anaerobic degradation process of macromolecule organic can be divided into four-stage: hydrolysis stage, fermentation (or acidifying) stage, product acetic acid stage and methane phase stage.
Hydrolysis stage is that the polymkeric substance of the non-solubility of complexity is converted into simple solvability monomer or dimeric process.Macromolecule organic is huge because of relative molecular weight, can not permeate through cell membranes, therefore directly can not utilize for bacterium.They are decomposed into small molecules in the first stage by bacterium extracellular enzyme.Such as, Mierocrystalline cellulose is cellobiose and glucose by cellulase hydrolysis, and starch is maltose and glucose by Amylase Hydrolysis, and protein is small peptide and amino acid etc. by proteolytic.These micromolecular hydrolysates can be dissolved in water and permeate through cell membranes is utilized by bacterium.Hydrolytic process is usually comparatively slow, is therefore considered to the rate-limiting step of pbz polymer organism or suspended substance waste liquid anaerobic degradation.The concentration etc. of many factors as temperature, organic composition, hydrolysate may affect the speed of hydrolysis and the degree of hydrolysis.
The biodegradation process of fermentation stage to be organic compound both as electron acceptor(EA) be also electron donor, dissolved organic matter is converted into the end products based on voltaile fatty acid in the process, and therefore this process is also referred to as acidifying.At this one-phase, the cellular transformation of above-mentioned micromolecular compound fermenting bacteria (i.e. acidifying bacterium) is more simple compound and is secreted into extracellular.The fermenting bacteria overwhelming majority is strictly anaerobic bacterium, but usually have an appointment 1% facultative anaerobe be present in anaerobic environment, these facultative anaerobes can play the strictly anaerobic bacterium of protection as methanobacteria from the infringement of oxygen and suppression.The primary product of this one-phase has voltaile fatty acid, alcohols, lactic acid, carbonic acid gas, hydrogen, ammonia, hydrogen sulfide etc., and the composition of product depends on the microbial population of the condition of anaerobic degradation, substrate kind and participation acidifying.Meanwhile, acidifying bacterium also utilizes moieties to synthesize new cellular material, therefore, produces more excess sludge during not-acidified Anaerobic wastewater treatment.In anaerobic degradation process, acidification bacteria must take in the tolerance of acid.Acidization pH can be able to carry out when dropping to 4.But the scope of methane phase process pH value is between 6.5 ~ 7.5, therefore the decline of pH value will reduce the generation of methane and the consumption of hydrogen, and causes the change that acidifying end products forms further.
Produce acid phase under the effect of hydrogen-producing acetogens, product is on last stage converted further as acetic acid, hydrogen, carbonic acid and new cellular material.In the methane phase stage, acetic acid, hydrogen, carbonic acid, formic acid and methyl alcohol are converted into methane, carbonic acid gas and new cellular material.The process that acetic acid, acetate, carbonic acid gas and hydrogen etc. are converted into methane has different methanogen on two kinds of physiology to complete by methanogen, one group becomes methane hydrogen with carbon dioxide conversion, another group produces methane from acetic acid or acetate decarboxylation, the former accounts for 1/3 of total amount, and the latter accounts for 2/3.
Oxygen compatibility pool arranges micro-hole aerator and air line, and its air is provided by small power centrifugal blower or aerofoil fan, and maximum gas-water ratio is 5:1, adopts low pressure form to carry out aeration to it.Arrange floating stuffing in oxygen compatibility pool, aeration at the bottom of pond carries out oxygenation to sewage, and makes sewage in the body of pond be in flow state, to ensure that sewage fully contacts with the filler in sewage, avoids there is sewage in biological contact oxidation pond and contacts uneven defect with filler.
Arrange mixed-liquor return pipe in oxygen compatibility pool, its mixed solution is back to anaerobic pond feed-water end by sump pump.
Arrange sludge pipe bottom settling tank, excess sludge discharge is transported outward to sludge sump by sludge pump by sludge pipe.
All features disclosed in this specification sheets, except mutually exclusive feature, all can combine by any way.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a buried microkinetic anaerobism waste disposal plant, it is characterized in that described device comprises biochemical treatment part and settling tank, described biochemical treatment part is integrated, sewage flows through the first anaerobic pond, the second anaerobic pond and oxygen compatibility pool successively, enter settling tank from the water outlet of oxygen compatibility pool by pipeline, in each pond, be provided with combined stuffing; Output terminal one end of settling tank is discharge ends, and one end is mud discharging end; Return line is provided with between described oxygen compatibility pool and the second anaerobic pond; Described biochemical treatment part and settling tank are all arranged on subsurface, and each part of biochemical treatment part is provided with ventpipe, and ventpipe is through ground and atmosphere; Described oxygen compatibility pool is provided with aerator, and aerator is connected with the blower fan on ground by pipeline.
2. one according to claim 1 buried microkinetic anaerobism waste disposal plant, it is characterized in that described first anaerobic pond is for falling streaming structure, the top of the first anaerobic pond is provided with perforation water distributor, and the water outlet of the bottom of anaerobic pond is connected with the water-in of the second anaerobic pond for the first time.
3. one according to claim 1 buried microkinetic anaerobism waste disposal plant, it is characterized in that described second anaerobic pond is flow lifting type structure, the bottom of the second anaerobic pond is provided with perforation water distributor and is connected with the water outlet of the first anaerobic pond, and the bottom of the second anaerobic pond is that water outlet is connected with oxygen compatibility pool.
4. one according to claim 1 buried microkinetic anaerobism waste disposal plant, it is characterized in that the bottom of described oxygen compatibility pool is provided with aerator, and the bottom of oxygen compatibility pool is provided with return line is connected with the second anaerobic pond, described return line is provided with pump.
5. one according to claim 4 buried microkinetic anaerobism waste disposal plant, is characterized in that the delivery port of described return line is arranged on the feed-water end of the second anaerobic pond.
6. one according to claim 1 buried microkinetic anaerobism waste disposal plant, is characterized in that described combined stuffing adopts hydroformylation fiber combinations filler.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587345A (en) * | 2017-02-24 | 2017-04-26 | 宜兴市建邦环境投资有限责任公司 | Composite type sludge reduction anaerobic digester |
| CN111056716A (en) * | 2020-01-10 | 2020-04-24 | 湖南沃工环境科技有限公司 | Buried biochemical sewage treatment method |
-
2015
- 2015-04-10 CN CN201520211861.4U patent/CN204550203U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587345A (en) * | 2017-02-24 | 2017-04-26 | 宜兴市建邦环境投资有限责任公司 | Composite type sludge reduction anaerobic digester |
| CN111056716A (en) * | 2020-01-10 | 2020-04-24 | 湖南沃工环境科技有限公司 | Buried biochemical sewage treatment method |
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