CN101863560B - Method for digesting activated sludge of strains storage tank - Google Patents
Method for digesting activated sludge of strains storage tank Download PDFInfo
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- CN101863560B CN101863560B CN2010101631614A CN201010163161A CN101863560B CN 101863560 B CN101863560 B CN 101863560B CN 2010101631614 A CN2010101631614 A CN 2010101631614A CN 201010163161 A CN201010163161 A CN 201010163161A CN 101863560 B CN101863560 B CN 101863560B
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- activated sludge
- strains
- bacterial classification
- sewage
- storage tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention belongs to the technical field of sewage treatment, which discloses a biochemical treatment method of sewage, in particular to a method for digesting the activated sludge of a strains storage tank. The method is characterized in that the quantity of strains added into an activated sludge tank can be randomly regulated so as to ensure that the optimum value of sludge load in the activated sludge is kept when the water quality and the water quantity of the sewage are changed, so as to ensure the increase of the treatment effect. The concentration and the load of the treated sewage are 3 times of that of the existing activated sludge. 30 to 410 percent of impact can be borne, while the water quality of the drained water is unchanged, the operation is simple and convenient, and the running is stable. The method for digesting the activated sludge of the strains storage tank can concentrate an organic substance at smaller volume, a plug-free small-hole diffuser is used for oxygen supply, the organic substance is quickly degraded by utilizing the strains with high concentration and high activity, the bacteria are also cultured, and the digestion of a given amount of strains with high concentration and high activity in the strains storage tank is always kept. The investment of the invention is 2/3 to 1/2 of that of the existing activated sludge, and the operating cost of the invention is 1/2 to 1/3 of that of the existing activated sludge method. The excess strains are automatically digested and degraded in the digesting strains storage tank, the investment and the operating cost of a large number of sludge treatment equipment are saved, and the invention has no secondary pollution and very good application prospect.
Description
Technical field:
Belong to sewage biochemical processing field.
Background technology:
In existing sewage biochemical processing, the activated sludge process load is not high, can not adapt to the unexpected variation of sewage quality.
Activated sludge process is to utilize organism in zoogloea (bacterial classification) absorption, the water of decomposition, utilizes zoogleic flocculence again, separates the sewage biochemical processing method of bacterial classification from processed water, and its key of disposing of sewage is:
1, organism in enough zoogloea absorption water of decomposition is arranged.
2, zoogloea has enough flocculencies, separates with clear water rapidly and thoroughly.
When the water quality and quantity of processed sewage changes suddenly, the sludge loading of active sludge is changed.Be lower than certain value as sludge loading, or when being higher than certain value, all can significantly reduce the flocculence of active sludge, cause sludge bulking.Draining is carried secretly be difficult to isolating dispersion bacterial classification to become muddy, draining COD significantly rises, and bacterial classification runs off in a large number.High sludge loading can make zoogloea disperse.These all reduce the efficient of active sludge to organic absorption, degraded greatly.
Above situation makes the longest, investment activated sludge process this duration of service economize, operate the easiest, most widely used sewage biochemical processing method most, and in sewage biochemical treatment field, the breadth and depth of use is greatly limited.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the invention provides a kind of method for digesting activated sludge of strains storage tank, organism more than 95% in high density, the highly active zoogloea absorption sewage is concentrated digestion, utilize the stifled aperture scatterer of nothing to be provided with competent oxygen, by nutrient line 7 (Fig. 1), provide competent bacterial classification required nutrient, with organism degraded substantially in the digestion storage bacterium pond D of less volume, high density bacterial classification.A certain amount of, high density of storage, high reactivity bacterial classification in the digestion storage bacterium pond, can be according to the variation of organism different concns, the different water yields in the sewage, in time regulate the amount that drops into activated sludge tank A bacterial classification (zoogloea), with stablizing of sludge loading in the maintenance active sludge.Improve the efficient of active sludge greatly to organism absorption degradation in the sewage, and the pulp water separation efficiency.Make the extensiveness and intensiveness of activated sludge process in sewage biochemical treatment field, breakthrough development has been arranged.Greatly reduced the energy consumption of activated sludge process, running cost and facility investment are applicable to the processing of sewage of various different concns, the different water yields and the sewage disposal that various concentration, the various water yield change.
The present invention is achieved through the following technical solutions: a kind of method for digesting activated sludge of strains storage tank, it is characterized in that can be with high density, highly active bacterial classification, can in time regulate its input amount arbitrarily, the an amount of activated sludge tank A that enters, keep the stable of sludge loading, organism with optimum regime absorption degradation sewage, and can keep the flocculence of active sludge the best, fast, separate with supernatant liquor completely.
Preceding a kind of method for digesting activated sludge of strains storage tank, it is characterized in that, adsorbed organic active sludge zoogloea in the sewage fully, thoroughly, concentrate in the digestion storage bacterium pond D, utilize high density, highly active active sludge with after supernatant liquor separates, be provided with competent oxygen and nutrient, the pH value that control is best with the volume of minimum, minimum aeration power, decomposes organism fast.
Preceding a kind of method for digesting activated sludge of strains storage tank; it is characterized in that; digestion storage bacterium pond D is eliminating the organic while; enough high densitys, high reactivity bacterial classification have been laid in; according to the water yield of sewage variation and the organic content of variation; in time adjust the amount of the bacterial classification that enters activated sludge tank A, to guarantee the stable of activated sludge tank sludge loading.Guarantee activated sludge absorption, the organic efficient of degradation of sewage and flocculation separation effect.
Preceding a kind of method for digesting activated sludge of strains storage tank is characterized in that, can effectively control the amount of high density, high reactivity bacterial classification in the digestion storage bacterium pond.
Preceding a kind of method for digesting activated sludge of strains storage tank is characterized in that having used not having stifled aperture scatterer (Fig. 2), has promptly supplied with competent oxygen, has saved aeration power again in a large number.Under the same conditions, the aperture scatterer (
Below) efficient be the mesopore scatterer
23 times, be the macropore scatterer
4-5 doubly.
The stifled aperture scatterer bubble of the nothing of using in preceding a kind of method for digesting activated sludge of strains storage tank exists
Below, and below the aperture scatterer, set up slag-drip opening, the iron rust impurity in the aerated conduit is discharged from the below slag-drip opening.Guarantee normal, the steady running of aperture scatterer.Thoroughly solved the easily stifled problem of aperture, microporous diffuser.Simultaneously, the power minimum of when air diffuser, being consumed.
The invention has the beneficial effects as follows:
1, low equipment investment is the 2/3-1/2 of existing activated sludge process, in existing aerobic biochemical, invests minimum.
2, shock-resistant, can bear the height load impact of normal load 30%-410%, and processing efficiency is constant, draining water quality is constant.
3, can heavy-duty service, sewage BOD reaches 5000mg/L and processing efficiency is constant, is 3 times of existing activated sludge process.
4, energy-conservation province consumes, the utilization ratio height of oxygen.Under equal conditions, working cost is the 1/2-1/3 of existing activated sludge process.
5, easy and simple to handle, stable, be better than existing activated sludge process.
Description of drawings:
Fig. 1, method for digesting activated sludge of strains storage tank process flow sheet.
A--activated sludge tank 1,2--waste water line
B--settling tank 4,5--slag line
C--slag bath 6--bacterial classification line
D--digestion storage bacterium pond 7--nutrient line
E--pulp pump 8--wind line
F--make up water variable valve
G--bacterial classification variable valve
W--pulp pump variable valve
Fig. 2, the stifled aperture scatterer front view of nothing.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing:
Fig. 1 is the process flow sheet of method for digesting activated sludge of strains storage tank:
Waste water enters activated sludge tank A from managing 1, and the bacterial classification of digestion storage bacterium pond D simultaneously by managing 6 and bacterial classification variable valve G, enters activated sludge tank A, thorough mixing.Absorption in the best condition, the organism in the degrading waste water, and keep best flocculation state, and entering settling tank B by managing 2, supernatant liquor effluxes from managing 3, and sediment (bacterial classification of adsorb organic compound) is gone into slag bath C by managing 4.Slag is evacuated to digestion storage bacterium pond D by pulp pump E by managing 5 pulp pump variable valve W, in digestion storage bacterium pond D, supply with competent nutrient by pipe 7, manage 8 air feeds, do not supply with competent oxygen, the organism that the strain degradation of high density is all through there being stifled aperture scatterer, and carry out culture of strains, make bacterial classification keep high density, high reactivity is prepared an amount of input activated sludge tank A from bacterial classification variable valve G at any time.Increase as the rising suddenly of the organic content in the sewage or the sewage water yield, transfer big bacterial classification variable valve G at once, strengthen the bacterial classification input amount, make the sludge loading held stationary, the draining water conditioning suddenly.Reduce as reduction suddenly of the organic content in the sewage or sewage quantity, turn bacterial classification variable valve G at once down, make the sludge loading held stationary, the draining water conditioning suddenly.
Embodiment 2
This enforcement difference from Example 1 is, surpasses 24 hours as sewage impact load too high (more than 4 times) and time, also need transfer big pulp pump variable valve W after transferring big bacterial classification variable valve G, opens make up water variable valve F, increases air quantity and nutrient simultaneously.Digestion storage bacterium pond bacterial classification amount is increased sharply.Remain high density, the high reactivity of digestion storage bacterium pond bacterial classification.
Embodiment 3
This enforcement difference from Example 1 is as sewage load too low (below 30%), and the time was above 24 hours, after turning bacterial classification variable valve G down, also need turn pulp pump variable valve W down and close make up water variable valve F, reduce air quantity and nutrient simultaneously, digestion storage bacterium pond bacterial classification amount is reduced rapidly, remain high density, the high reactivity of a certain amount of bacterial classification in digestion storage bacterium pond, and reduce aeration power and working cost.
Embodiment 4
This enforcement difference from Example 1 is that excessive for a long time as the bacterial classification in the digestion storage bacterium pond, unnecessary bacterial classification can fall in digestion in digestion storage bacterium pond, this not only can save the facility investment and the working cost of a large amount of processing excess sludges.And by the nutrient of digestion bacterial classification still in Sludge System, can save the working cost that adds nutrient and non-secondary pollution.Have only and when a large amount of mineralising of bacterial classification, just need the part displacement.
Above preferred embodiment discloses the present invention, and so it is not in order to restriction the present invention, and the technical scheme that mode obtained of equal replacement of all employings or equivalent transformation all drops in protection scope of the present invention.
Claims (5)
1. method for digesting activated sludge of strains storage tank, it is characterized in that: with organism basic degraded in less volumetrical, high density bacterial classification digestion storage bacterium pond (D), store a certain amount of high density, high reactivity bacterial classification in the digestion storage bacterium pond (D), variation according to organism different concns, the different water yields in the sewage, in time regulate the amount that drops into activated sludge tank (A) bacterial classification, its regulative mode is:
When organic content in the sewage raises suddenly or the sewage water yield when increasing suddenly, transfer big bacterial classification variable valve (G), strengthen the input amount of bacterial classification;
When organic content in the sewage reduces suddenly or the sewage water yield when reducing suddenly, turn bacterial classification variable valve (G) down, reduce the input amount of bacterial classification.
2. method for digesting activated sludge of strains storage tank according to claim 1 is characterized in that: in digestion storage bacterium pond (D), do not supply with competent oxygen by there being stifled aperture scatterer, supply with competent nutrient by pipe (7).
3. method for digesting activated sludge of strains storage tank according to claim 2 is characterized in that: the below of not having stifled aperture scatterer is provided with slag-drip opening.
4. method for digesting activated sludge of strains storage tank according to claim 1, it is characterized in that: as the sewage impact load be original more than 4 times and the time above 24 hours, also need transfer big pulp pump valve (W) afterwards at the big bacterial classification variable valve of accent (G), open and replenish water valve (F), increase air quantity and nutrient simultaneously, digestion storage bacterium pond bacterial classification amount is increased sharply.
5. method for digesting activated sludge of strains storage tank according to claim 1, it is characterized in that: as sewage load for original below 30% and the time above 24 hours, turning bacterial classification variable valve (G) down afterwards, also need turn pulp pump valve (W) down and close additional water valve (F), reduce air quantity and nutrient simultaneously, digestion storage bacterium pond bacterial classification amount is reduced rapidly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101631614A CN101863560B (en) | 2010-04-08 | 2010-04-08 | Method for digesting activated sludge of strains storage tank |
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| CN2010101631614A CN101863560B (en) | 2010-04-08 | 2010-04-08 | Method for digesting activated sludge of strains storage tank |
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| CN101863560A CN101863560A (en) | 2010-10-20 |
| CN101863560B true CN101863560B (en) | 2013-07-31 |
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| CN2010101631614A Expired - Fee Related CN101863560B (en) | 2010-04-08 | 2010-04-08 | Method for digesting activated sludge of strains storage tank |
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| CN111717992A (en) * | 2020-06-29 | 2020-09-29 | 巢湖市科凌沃特水处理技术有限公司 | Be suitable for anaerobism biological treatment device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746117A (en) * | 2004-09-10 | 2006-03-15 | 株式会社安川电机 | Sewage treatment system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746117A (en) * | 2004-09-10 | 2006-03-15 | 株式会社安川电机 | Sewage treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 宋应民.高负荷活性污泥处理废水的研究.《第六届中国科学家论坛论文汇编》.2007, * |
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