CN115215446A - Method for treating sewage by adding hydrogen peroxide - Google Patents
Method for treating sewage by adding hydrogen peroxide Download PDFInfo
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- CN115215446A CN115215446A CN202210910098.9A CN202210910098A CN115215446A CN 115215446 A CN115215446 A CN 115215446A CN 202210910098 A CN202210910098 A CN 202210910098A CN 115215446 A CN115215446 A CN 115215446A
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- Prior art keywords
- sewage
- raw water
- treatment
- hydrogen peroxide
- vertical flow
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- 239000010865 sewage Substances 0.000 title claims abstract description 61
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 239000011574 phosphorus Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract description 5
- 238000012258 culturing Methods 0.000 claims description 9
- 244000005700 microbiome Species 0.000 claims description 5
- 239000000571 coke Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 230000032770 biofilm formation Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Classifications
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
-
- 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
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a method for treating sewage by adding hydrogen peroxide, which comprises the following steps of: membrane hanging and domestication of raw sewage, aerobic treatment and facultative treatment. The aerobic environment is provided by combining the raw water film-forming domestication method and hydrogen peroxide with the mass concentration of 0.25-0.5%, so that the explosion gas is avoided, and the technical problems of blockage and high cost are solved; on the basis, the facultative treatment is carried out by combining the vertical flow artificial wetland after the raw water acclimation and the biofilm formation, and the removal rate of COD, ammonia nitrogen, total phosphorus and total nitrogen is finally improved.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment method by adding hydrogen peroxide.
Background
In the conventional artificial wetland, because of low dissolved oxygen, nitration reaction is insufficient, and the removal rate of cod and ammonia nitrogen is low. The common method for enhancing the dissolved oxygen is to add an artificial aeration system at the bottom of the wetland, but the measure has the defects of high cost and easy blockage of an aeration pipe due to no air supply for a long time. Regarding biofilm culturing and domestication, in the prior art, water is prepared in a multi-purpose laboratory for domestication, and the obtained microbial environment has certain limitation on the water treatment effect.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a method for treating sewage by adding hydrogen peroxide, which is based on the aerobic environment provided by combining a raw water film-forming domestication method and hydrogen peroxide with specific concentration, on one hand, avoids using explosion gas, and solves the technical problems of blockage and high cost; on the basis, the facultative treatment is carried out by combining the vertical flow artificial wetland after the raw water acclimation and the biofilm formation, and the removal rate of COD, ammonia nitrogen, total phosphorus and total nitrogen is finally improved.
In order to realize the purpose of the invention, the adopted technical scheme is as follows: a sewage treatment method by adding hydrogen peroxide comprises the following steps of: performing biofilm culturing and domestication, aerobic treatment and facultative treatment on raw sewage;
the membrane hanging domestication process of the sewage raw water comprises the steps of adding the sewage raw water into a vertical flow artificial wetland from the top, performing the membrane hanging domestication, replacing the sewage raw water every three days in the membrane hanging domestication process until the sewage raw water is stable, and finishing the growth of microorganisms (the whole domestication period is generally 60-62 days); the vertical flow artificial wetland is internally and sequentially distributed with a fly ash layer, a ceramsite layer and a coke layer from top to bottom; the quality of sewage raw water is as follows: COD is 150 +/-30 mg/L, ammonia nitrogen is 30 +/-5 mg/L, total phosphorus is 10 +/-2 mg/L, and total nitrogen is 21 +/-4 mg/L. The membrane-hanging domestication is carried out on the sewage raw water with specific water quality, and the obtained microorganisms have a better water treatment effect compared with water blending in a laboratory, one of the main reasons is that the sewage raw water is closer to the sewage to be treated, a more complex microorganism environment can be formed, the aerobic and facultative water treatment in the later period is facilitated, and the membrane-hanging domestication method can adapt to larger water quality fluctuation of the sewage to be treated.
And an aerobic treatment process, wherein two vertical flow constructed wetlands for biofilm culturing according to the raw sewage biofilm culturing process are respectively a first vertical flow constructed wetland and a second vertical flow wetland, the two vertical flow constructed wetlands are connected in series at the top and the bottom, raw sewage to be treated (COD is 270-310 mg/L) is introduced into the first vertical flow constructed wetland from the top, meanwhile, 0.25-0.5 percent of hydrogen peroxide by mass concentration is continuously dripped onto the top of the first vertical flow constructed wetland at the same time, and the total amount of the hydrogen peroxide is 0.72L per 3L of raw sewage within 24h, so that dissolved oxygen is uniformly distributed in the first vertical flow constructed wetland, and the raw sewage is further subjected to aerobic treatment.
And a facultative treatment process, namely, sewage raw water flows out from the bottom after staying for 24 hours in the first artificial wetland, is injected into the second vertical flow artificial wetland from the top for facultative treatment, and is discharged from the bottom after staying for 24 hours, so that sewage treatment is completed.
If the concentration of hydrogen peroxide is too high, excessive dissolved oxygen is caused to inhibit microbial activity, and if the concentration of hydrogen peroxide is too low, the dissolved oxygen is insufficient, so that the treatment effect is not satisfactory, and preferably, the mass concentration of hydrogen peroxide is 0.25%.
Compared with the prior art, the membrane-hanging domestication method has the advantages that the membrane-hanging domestication is carried out on the raw sewage, the sewage treatment efficiency can be effectively improved, the required aerobic environment is provided by combining the set hydrogen peroxide concentration, the raw sewage is subjected to sufficient aerobic treatment, and then the facultative treatment is cooperated (the effluent of the first vertical flow artificial wetland is provided with a small amount of oxygen so as to be introduced into the second vertical flow artificial wetland to form the facultative treatment environment), so that the COD removal rate of the raw sewage is successfully up to 88-96%, the ammonia nitrogen removal rate is up to 74-90.25%, the total phosphorus removal rate is up to 70.41-80%, and the total nitrogen removal rate is up to 32.66-55.63%.
Drawings
FIG. 1 shows the results of the sewage treatment process in the example of the present invention.
Detailed Description
The present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is described in further detail below with reference to examples:
a sewage treatment method by adding hydrogen peroxide comprises the following steps of: performing biofilm culturing and domestication, aerobic treatment and facultative treatment on raw sewage;
the film-hanging domestication process of sewage raw water comprises the steps of adding sewage raw water into a vertical flow artificial wetland from the top, performing film-hanging domestication, replacing the sewage raw water every three days in the film-hanging domestication process until the sewage raw water is stable, and finishing the growth of microorganisms (the whole domestication period is generally 60-62 days); the vertical flow artificial wetland is internally and sequentially distributed with a fly ash layer, a ceramsite layer and a coke layer from top to bottom; water quality of sewage raw water: COD is 150 +/-30 mg/L, ammonia nitrogen is 30 +/-5 mg/L, total phosphorus is 10 +/-2 mg/L, and total nitrogen is 21 +/-4 mg/L.
Aerobic treatment process, wherein the vertical flow artificial wetland for biofilm culturing according to the sewage raw water biofilm culturing process comprises two vertical flow artificial wetlands, namely a first vertical flow artificial wetland and a second vertical flow wetland, the two vertical flow artificial wetlands are connected in series at the top and the bottom, sewage raw water to be treated is introduced into the first vertical flow artificial wetland from the top, meanwhile, 0.25 percent of hydrogen peroxide by mass concentration is continuously dripped to the top of the first vertical flow artificial wetland at the dripping speed of 0.72L of total hydrogen peroxide by every 3L of sewage raw water within 24h, so as to ensure that dissolved oxygen is uniformly distributed in the first vertical flow artificial wetland, and then the sewage raw water is subjected to aerobic treatment
And a facultative treatment process, namely, sewage raw water flows out from the bottom after staying for 24 hours in the first artificial wetland, is injected into the second vertical flow artificial wetland from the top for facultative treatment, and is discharged from the bottom after staying for 24 hours, so that sewage treatment is completed. The specific results of the method are shown in figure 1 (the treatment date is 2021, 7 months and 7 days to 7 months and 31 days, random water pumping detection is carried out, 1 is aerobic treatment effluent detection, and 2 is facultative treatment effluent detection), the COD removal rate of raw sewage is as high as 88-96%, the ammonia nitrogen removal rate is as high as 74-90.25%, the total phosphorus removal rate is as high as 70.41-80%, and the total nitrogen removal rate is as high as 32.66-55.63%.
In the embodiment of the invention, the top of the artificial wetland is provided with a first communicated pipe and a second communicated pipe, the first pipe is composed of a plurality of parallel pipes, the top of each pipe is uniformly provided with a water outlet along the length direction of the pipe (the water outlet is arranged in the direction for preventing microbial films or impurities from blocking the pipe), and the first communicated pipe is used for uniformly distributing sewage raw water to the artificial wetland from the top as required. The second calandria comprises a plurality of pipelines which are connected in parallel, the bottom of each pipeline is uniformly provided with a water outlet along the length direction of the pipeline, and the communicated second calandria is used for uniformly adding hydrogen peroxide to the constructed wetland from the top of the hydrogen peroxide according to needs.
Based on the device and the steps, a hydrogen peroxide debugging test is also carried out, and when the mass concentration of the hydrogen peroxide is 0.3%, the water treatment effect is equivalent to the concentration treatment effect of 0.25%. When the mass concentration of the hydrogen peroxide is 0.5%, the total nitrogen removal effect is about twice lower than that when the mass concentration is 0.25%, the removal rate of total phosphorus, ammonia nitrogen and COD is equivalent to that when the mass concentration is 0.25%, but the removal rate of 1-out COD is reduced along with the extension of the treatment period. When the mass concentration of the hydrogen peroxide exceeds 1%, the total nitrogen is not reduced, but is increased.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (3)
1. A method for treating sewage by adding hydrogen peroxide is characterized by comprising the following steps: comprises the following treatment processes of sequentially carrying out domestic sewage: performing film-hanging domestication, aerobic treatment and facultative treatment on raw sewage;
the film-hanging domestication process of the sewage raw water comprises the steps of adding the sewage raw water into a vertical-flow artificial wetland from the top, performing film-hanging domestication, replacing the sewage raw water every three days in the film-hanging domestication process until the sewage raw water is stable, and finishing the growth of microorganisms; the vertical flow artificial wetland is internally and sequentially distributed with a fly ash layer, a ceramsite layer and a coke layer from top to bottom; water quality of sewage raw water: COD is 150 +/-30 mg/L, ammonia nitrogen is 30 +/-5 mg/L, total phosphorus is 10 +/-2 mg/L, and total nitrogen is 21 +/-4 mg/L.
The aerobic treatment process comprises two vertical flow artificial wetlands for biofilm culturing according to the sewage raw water biofilm culturing process, wherein the two vertical flow artificial wetlands are respectively a first vertical flow artificial wetland and a second vertical flow wetland, the two vertical flow artificial wetlands are connected in series at the top and the bottom, COD of sewage raw water is doubled, the first vertical flow artificial wetland is introduced from the top, meanwhile, hydrogen peroxide with the mass concentration of 0.25-0.5% is continuously dripped to the top of the first vertical flow artificial wetland uniformly, and the total amount of the hydrogen peroxide is 0.72L per 3L of sewage raw water within 24 h;
and a facultative treatment process, namely, the sewage raw water flows out from the bottom after staying for 24 hours in the first artificial wetland and is injected into the second vertical flow artificial wetland from the top for facultative treatment, and the sewage raw water is discharged from the bottom after staying for 24 hours, so that the sewage treatment is completed.
2. The method for sewage treatment by adding hydrogen peroxide according to claim 1, which is characterized in that: the period of domestication by hanging membrane is 60-62 days.
3. The method for treating sewage by adding hydrogen peroxide as claimed in claim 1, wherein the method comprises the following steps: the mass concentration of the hydrogen peroxide is 0.25 percent.
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| CN202210910098.9A CN115215446A (en) | 2022-07-29 | 2022-07-29 | Method for treating sewage by adding hydrogen peroxide |
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| CN202210910098.9A CN115215446A (en) | 2022-07-29 | 2022-07-29 | Method for treating sewage by adding hydrogen peroxide |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998017592A1 (en) * | 1996-10-22 | 1998-04-30 | Reddy Malireddy S | Biochemical media system for reducing pollution |
| WO2012161392A1 (en) * | 2011-05-24 | 2012-11-29 | 주식회사 성일엔텍 | Hybrid artificial wetland water purification system, sewage treatment device using same, and natural nonpoint purification device capable of simultaneously purifying river and lake water |
| CN103739081A (en) * | 2014-01-13 | 2014-04-23 | 上海交通大学 | Subsurface flow wetland device for enhanced nitrogen removal of low-pollution water |
| CN104512967A (en) * | 2014-12-24 | 2015-04-15 | 哈尔滨工业大学 | Cooperatively-intensified denitrifying and dephosphorizing ecological sewage treatment device and water purifying method |
| CN110921833A (en) * | 2019-12-26 | 2020-03-27 | 暨南大学 | A sewage treatment system and method for strengthening domestic sewage anaerobic ammonia oxidation denitrification and phosphorus removal at the same time |
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-
2022
- 2022-07-29 CN CN202210910098.9A patent/CN115215446A/en active Pending
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