CN113307361A - Sewage treatment method for starting contact oxidation system by using microbial agent - Google Patents
Sewage treatment method for starting contact oxidation system by using microbial agent Download PDFInfo
- Publication number
- CN113307361A CN113307361A CN202010761191.9A CN202010761191A CN113307361A CN 113307361 A CN113307361 A CN 113307361A CN 202010761191 A CN202010761191 A CN 202010761191A CN 113307361 A CN113307361 A CN 113307361A
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- China
- Prior art keywords
- contact oxidation
- sewage
- aerobic bacteria
- sewage treatment
- sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
Abstract
The invention discloses a sewage treatment method for starting a contact oxidation system by using a microbial agent. A large amount of manpower, material resources and financial resources are not needed to be wasted for transporting the activated sludge, and only a small amount of aerobic microbial inoculum is needed to be added into the oxidation pond. The aerobic microbial inoculum has high effective active bacteria content, can quickly form a biofilm on carrier filler in a contact oxidation tank, has strong environmental adaptability of the biofilm, and further quickly treats sewage, and has excellent sewage treatment effect. The sludge in the contact oxidation pond and the sludge volume that produces are few, effectively reduce sludge treatment cost, and sewage treatment system does not have mud inflation risk simultaneously, and system later stage running cost and trouble are less.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sewage treatment method for starting a contact oxidation system by using a microbial agent.
Background
In the conventional sewage treatment system, aerobic bacteria are inoculated and cultured by using activated sludge, and the method for culturing the aerobic bacteria has the following problems:
1. the work of finding a sludge source is difficult, and especially in the construction process in different places, the work of locally coordinating the active sludge source usually takes a lot of debugging time.
2. The work of transporting activated sludge is difficult, and although the activated sludge can be used for biochemical inoculation in a biochemical starting project, the activated sludge is a pollutant in essence, such as dehydrated sludge, and the activated sludge is in essence that solid wastes need qualified transportation units for transportation in the transportation process, so that leakage and illegal dumping behaviors are prevented.
3. In practical projects, activated sludge of a municipal sewage treatment plant is often used as inoculation sludge, the microbial population in the activated sludge of the municipal sewage treatment plant is abundant, but the activated sludge of the municipal sewage treatment plant grows in the quality of domestic sewage, the tolerance is general, the starting period is often long when the sludge of the municipal sewage treatment plant is used for starting industrial sewage treatment, particularly projects with higher influent COD concentration, and the sludge needs to be matched with domestication treatment.
4. In the later operation of the system, because activated sludge exists, the sludge yield is still high, and the sludge disposal cost is high.
5. The later stage of the system still has sludge bulking risk, and the operation risk and the treatment cost are increased.
Disclosure of Invention
The present invention is intended to provide a method for treating sewage by starting a contact oxidation system with a microbial agent without using activated sludge.
In order to achieve the above purpose, the following scheme is provided: there is provided a method for wastewater treatment using a microbial inoculant for priming a contact oxidation system, the method comprising the steps of:
s1, closing a water inlet and outlet pipeline of the contact oxidation pond, and stopping water inlet and outlet of the contact oxidation pond;
s2, adjusting the pH value of the sewage in the sewage treatment system to 5.5-9.5, and ensuring that DO of the contact oxidation tank is above 3 mg/l;
s3, putting aerobic bacteria into the contact oxidation tank with the adjusted pH value, wherein the putting amount of the aerobic bacteria is 200 ppm;
s4, culturing aerobic bacteria, and aerating the contact oxidation tank for 10 days for more than 20 hours every day;
s5, injecting sewage to be treated into the contact oxidation tank in a stepped water inlet mode, wherein the first water injection amount is 10% of the total water amount of the oxidation system, and the water injection amount per day is gradually increased by 10% of the total water amount;
s6, the biological membrane formed by the aerobic bacteria is gradually thickened and matured, and after the sewage is treated by the aerobic bacteria, the water quality reaches the standard and can be discharged.
Further, the alkaline reagent of the PH adjusting reagent of step S2 includes lime, limestone, dolomite, sodium hydroxide, and sodium carbonate, and the acidic reagent includes sulfuric acid and hydrochloric acid.
Further, the temperature for culturing the aerobic bacteria in the step S4 is 8 to 60 ℃.
The invention has the beneficial effects that:
1. aerobic bacteria do not need to be cultured by sludge, an active sludge source does not need to be coordinately found, and the work of transforming a sewage treatment system in different places is more convenient.
2. A large amount of manpower, material resources and financial resources are not needed to be wasted for transporting the activated sludge, and only a small amount of aerobic microbial inoculum is needed to be added into the oxidation pond.
3. The aerobic microbial inoculum has high effective active bacteria content, can quickly form a biofilm on carrier filler in a contact oxidation tank, has strong environmental adaptability of the biofilm, and further quickly treats sewage, and has excellent sewage treatment effect.
4. The sludge in the contact oxidation pond and the sludge volume that produces are few, effectively reduce sludge treatment cost, and sewage treatment system does not have mud inflation risk simultaneously, and system later stage running cost and trouble are less.
Detailed Description
The following is further detailed by the specific embodiments:
there is provided a method for wastewater treatment using a microbial inoculant for priming a contact oxidation system, the method comprising the steps of:
s1, closing a water inlet and outlet pipeline of the contact oxidation pond, and stopping water inlet and outlet of the contact oxidation pond;
the inlet and outlet water paths of the contact oxidation tank are closed, so that the loss of the aerobic microbial inoculum can be avoided when the aerobic microbial inoculum is added in the later stage.
S2, adjusting the pH value of the sewage in the sewage treatment system to 5.5-9.5, and ensuring that DO of the contact oxidation tank is above 3 mg/l;
the pH value of the sewage is between 6.6 and 7.8, the proliferation speed of aerobic bacteria in the aerobic bacteria agent is high, and when the pH value of the sewage is 7.5, the activity, proliferation speed and sewage treatment capacity of the aerobic bacteria are optimal.
S3, putting aerobic bacteria into the contact oxidation tank with the adjusted pH value, wherein the putting amount of the aerobic bacteria is 200 ppm;
the requirements of the sewage treatment system can be met only by adding a small amount of aerobic bacteria agent into the contact oxidation tank.
S4, culturing aerobic bacteria, and aerating the contact oxidation tank for 10 days for more than 20 hours every day;
wherein, the aeration operation is carried out on the contact oxygen pond, so that the aerobic bacteria can contact more oxygen, and the activity and the proliferation speed of the aerobic bacteria are better.
S5, injecting sewage to be treated into the contact oxidation tank in a stepped water inlet mode, wherein the first water injection amount is 10% of the total water amount of the oxidation system, and the water injection amount per day is gradually increased by 10% of the total water amount;
the step-type sewage injection operation enables aerobic bacteria to have enough time to treat the injected sewage, and the sewage is further multiplied, so that subsequent aerobic bacteria can treat more sewage.
S6, the biological membrane formed by the aerobic bacteria is gradually thickened and matured, and after the sewage is treated by the aerobic bacteria, the water quality reaches the standard and can be discharged.
The sewage with the water quality reaching the standard can be discharged to the next publication for treatment.
As a further supplement and improvement to this embodiment, the alkaline reagent of the PH adjusting reagent of step S2 includes lime, limestone, dolomite, sodium hydroxide, and sodium carbonate, and the acidic reagent includes sulfuric acid and hydrochloric acid.
Wherein, when the PH value of the sewage is acidic, alkaline substances can be added to ensure that the sewage reaches the preset PH value; when the pH value of the sewage is alkaline, acidic substances are added to enable the sewage to reach a preset pH value.
As a further supplement and improvement to this embodiment, the temperature for culturing the aerobic bacteria in step S4 is 8 to 60 degrees celsius.
Wherein the temperature for keeping the activity of the aerobic bacteria is between 8 ℃ and 60 ℃; the temperature is higher than 60 ℃, so that the aerobic bacteria can die; when the temperature is lower than 8 ℃, the activity of aerobic bacteria is reduced, and the proliferation speed is greatly reduced; the optimal temperature for the growth of the aerobic bacteria is 25 to 35 ℃.
In some project projects for improving sewage treatment systems, sometimes, the situation that the contact oxidation pond cannot stop water inlet and outlet occurs, the PH value of the sewage needs to be adjusted to 7.0-7.5, the DO of the contact oxidation pond is ensured to be more than 3mg/l, the aerobic microbial inoculum to be fed is averagely divided into 10 parts, the aerobic microbial inoculum is fed at the water inlet of the contact oxidation pond every day, and the feeding is continuously carried out for 10 days.
The sewage treatment method does not need to culture aerobic bacteria by sludge, does not need to coordinate to find an active sludge source, and is more convenient for transforming a sewage treatment system in different places. A large amount of manpower, material resources and financial resources are not needed to be wasted for transporting the activated sludge, and only a small amount of aerobic microbial inoculum is needed to be added into the oxidation pond. The aerobic microbial inoculum has high effective active bacteria content, can quickly form a biofilm on carrier filler in a contact oxidation tank, has strong environmental adaptability of the biofilm, and further quickly treats sewage, and has excellent sewage treatment effect. The sludge in the contact oxidation pond and the sludge volume that produces are few, effectively reduce sludge treatment cost, and sewage treatment system does not have mud inflation risk simultaneously, and system later stage running cost and trouble are less.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics of the embodiments is not described herein in any greater extent than that known to persons of ordinary skill in the art at the filing date or before the priority date of the present invention, so that all of the prior art in this field can be known and can be applied with the ability of conventional experimental means before this date. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (3)
1. A method for wastewater treatment using a microbial inoculant for startup of a contact oxidation system, the method comprising the steps of:
s1, closing a water inlet and outlet pipeline of the contact oxidation pond, and stopping water inlet and outlet of the contact oxidation pond;
s2, adjusting the pH value of the sewage in the sewage treatment system to 5.5-9.5, and ensuring that DO of the contact oxidation tank is above 3 mg/l;
s3, putting aerobic bacteria into the contact oxidation tank with the adjusted pH value, wherein the putting amount of the aerobic bacteria is 200 ppm;
s4, culturing aerobic bacteria, and aerating the contact oxidation tank for 10 days for more than 20 hours every day;
s5, injecting sewage to be treated into the contact oxidation tank in a stepped water inlet mode, wherein the first water injection amount is 10% of the total water amount of the oxidation system, and the water injection amount per day is gradually increased by 10% of the total water amount;
s6, the biological membrane formed by the aerobic bacteria is gradually thickened and matured, and after the sewage is treated by the aerobic bacteria, the water quality reaches the standard and can be discharged.
2. The method for wastewater treatment using microbial inoculant for startup of a contact oxidation system as set forth in claim 1, wherein: the alkaline reagent of the pH value adjusting reagent of the step S2 comprises lime, limestone, dolomite, sodium hydroxide and sodium carbonate, and the acidic reagent comprises sulfuric acid and hydrochloric acid.
3. The method for wastewater treatment using microbial inoculant for startup of a contact oxidation system as set forth in claim 1, wherein: the temperature for culturing the aerobic bacteria in the step S4 is 8-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010761191.9A CN113307361A (en) | 2020-07-31 | 2020-07-31 | Sewage treatment method for starting contact oxidation system by using microbial agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010761191.9A CN113307361A (en) | 2020-07-31 | 2020-07-31 | Sewage treatment method for starting contact oxidation system by using microbial agent |
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| CN113307361A true CN113307361A (en) | 2021-08-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354786A (en) * | 1999-06-10 | 2002-06-19 | 株式会社拜克 | Method of high-concentration culture of nitrifying bacteria or denitrifying bacteria contained in activated sludge, culture promoter to be used in high-concentration culture method of nitrifying |
| CN102007075A (en) * | 2008-02-15 | 2011-04-06 | 毛利西奥·里科·马丁内斯 | Energy optimization in an anaerobic, facultative, anoxic aerobic plant, using fine bubbles, without sludge production |
| CN104073461A (en) * | 2014-06-10 | 2014-10-01 | 首钢总公司 | Domestication method for microorganisms for performing purification treatment on cold-rolling organic wastewater |
| CN110563154A (en) * | 2019-07-25 | 2019-12-13 | 广东卓信环境科技股份有限公司 | microbial starting method for biological aerated filter |
-
2020
- 2020-07-31 CN CN202010761191.9A patent/CN113307361A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354786A (en) * | 1999-06-10 | 2002-06-19 | 株式会社拜克 | Method of high-concentration culture of nitrifying bacteria or denitrifying bacteria contained in activated sludge, culture promoter to be used in high-concentration culture method of nitrifying |
| CN102007075A (en) * | 2008-02-15 | 2011-04-06 | 毛利西奥·里科·马丁内斯 | Energy optimization in an anaerobic, facultative, anoxic aerobic plant, using fine bubbles, without sludge production |
| CN104073461A (en) * | 2014-06-10 | 2014-10-01 | 首钢总公司 | Domestication method for microorganisms for performing purification treatment on cold-rolling organic wastewater |
| CN110563154A (en) * | 2019-07-25 | 2019-12-13 | 广东卓信环境科技股份有限公司 | microbial starting method for biological aerated filter |
Non-Patent Citations (2)
| Title |
|---|
| 张宝军等: "《水处理工程技术》", 31 January 2015, 重庆大学出版社 * |
| 钱汉卿等: "《化工水污染防治技术》", 31 July 2004, 中国石化出版社 * |
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Application publication date: 20210827 |
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