CN111606503A - Utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio - Google Patents
Utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 69
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 238000004062 sedimentation Methods 0.000 claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 13
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 6
- 230000001546 nitrifying effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 230000001105 regulatory effect Effects 0.000 description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
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- 238000012163 sequencing technique Methods 0.000 description 3
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- 230000002550 fecal effect Effects 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F3/006—Regulation methods for biological treatment
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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
- C02F3/1263—Sequencing batch reactors [SBR]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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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
- C02F7/00—Aeration of stretches of water
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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 discloses a sewage treatment device for adjusting carbon-nitrogen ratio by using an external bypass system, and belongs to the technical field of sewage treatment equipment. It includes equalizing basin, oxygen deficiency pond, good oxygen pond, sedimentation tank, disinfection unit, the equalizing basin passes through the water pump and inserts the oxygen deficiency pond, and oxygen deficiency pond overflow inserts good oxygen pond, and good oxygen pond overflow inserts the sedimentation tank, and the sedimentation tank inserts the disinfection unit, still includes the SBR reaction tank, the SBR reaction tank is intake the end and is connected through the water pump with the equalizing basin play water end, and the SBR reaction tank goes out water end and passes through the water pump and insert good oxygen pond. The aeration-sedimentation time of the SBR reaction tank is changed by adjusting the bypass ratio of the bypass part of the SBR reaction tank, so that the aim of adjusting the C/N value in the sewage is fulfilled, and the sewage treatment capacity of the whole system is improved.
Description
Technical Field
The invention relates to a sewage treatment device for adjusting carbon-nitrogen ratio by using an external bypass system, belonging to the technical field of sewage treatment equipment.
Background
With the development of economy and the progress of society, the living standard of people gradually rises, but the environmental pollution is brought along with the development of the people, wherein the environmental pollution causes the attention of all countries in the world. Due to numerous population, domestic sewage discharge amount is high and the problem of water pollution is serious in China. In order to better protect the water environment, sewage treatment needs to reach higher standard discharge. But the treatment capacity of the original sewage treatment process unit is insufficient, and in order to improve the sewage treatment capacity and reach higher discharge standard, a plurality of sewage treatment processes and equipment need to be redesigned or optimized.
In recent years, the upgrading and transformation of urban sewage treatment are developed rapidly, but the development is slow in rural sewage treatment. Domestic sewage or fecal sewage in rural areas is directly discharged to the natural environment, and serious pollution is caused to natural water resources. Most of the current rural sewage treatment equipment is integrated sewage treatment equipment with economy, high efficiency and high automation, and the improvement of the corresponding integrated equipment is a necessary way for improving the effluent standard.
After a period of development, the process of biological nitrogen and phosphorus removal tends to be mature, and the principle of the process is mainly to realize the biological nitrogen and phosphorus removal by utilizing nitrification-denitrification, phosphorus release and phosphorus accumulation of phosphorus accumulation bacteria. The carbon source is one of the factors for limiting the biological nitrogen and phosphorus removal effect, the nitrogen and phosphorus removal can be ensured under the condition of ensuring the sufficient carbon source, and researches show that the carbon source can be considered to be sufficient when the C/N is generally 4-6. In addition, the nitrogen and phosphorus removal effect can be influenced by different types of organic carbon sources, for example, the denitrification effect of volatile fatty acid is better. At present, the C/N value in domestic sewage is low, and the nitrogen and phosphorus removal effect of the wastewater is influenced. After long-term tracking of the existing integrated rural sewage treatment equipment, the conventional treatment process can well reach the generally required discharge standard, but the traditional treatment process needs to be modified to reach a higher standard, and the C/N value is one of important factors influencing the effluent quality to reach the standard.
Sequencing Batch Reactor (SBR) is the preferred activated sludge wastewater treatment process. The operation steps are divided into five stages: water inlet, aeration, sedimentation, drainage and idle. The SBR process realizes automation of a sewage treatment process through time alternation, and the reaction process is carried out in one reaction tank, namely, the functions of a regulating tank, an aeration tank and a secondary sedimentation tank are integrated in one reaction tank to carry out the processes of regulating the water inlet quantity and load, degrading organic matters by microorganisms, separating solid and liquid and the like. The SBR process has the advantages of good ideal plug flow organic matter removing effect, good settling property, low construction cost, easy realization of automatic control and the like, and the construction of a secondary sedimentation tank and sludge backflow are saved. Therefore, SBR is often used as the first choice process for the modification of sewage treatment plants.
Therefore, in order to ensure that the effluent of the sewage treatment equipment reaches higher standard, the existing integrated sewage treatment equipment is modified, the SBR reaction tank is added, the value of C/N of the influent water is adjusted, the carbon source in the sewage is fully utilized, and the sewage treatment efficiency is further improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio, it is lower that it has solved the C/N value in the present domestic sewage, influences the effect problem of the nitrogen and phosphorus removal of waste water.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the utility model provides an utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio, it includes equalizing basin, oxygen deficiency pond, good oxygen pond, sedimentation tank, disinfection unit, the equalizing basin passes through the water pump and inserts the oxygen deficiency pond, and oxygen deficiency pond overflow inserts good oxygen pond, and good oxygen pond overflow inserts the sedimentation tank, and the sedimentation tank inserts the disinfection unit, still includes the SBR reaction tank, the SBR reaction tank is intake the end and is connected through the water pump with the equalizing basin play water end, and the SBR reaction tank goes out water end and passes through the water pump and insert good oxygen pond.
As a preferable example, the aerobic tank is connected into the anoxic tank through a reflux pump and a nitrifying liquid reflux pipe.
As a preferred example, the bottom of the sedimentation tank is connected into the anoxic tank through a sludge pump and a sludge return pipeline.
The SBR reaction tank is an existing process equipment for performing activated sludge sewage treatment by using a Sequencing Batch Reactor (SBR). The reaction process is carried out in one reaction tank, i.e. the functions of the sewage regulating tank, the aeration tank and the secondary sedimentation tank are integrated in one reaction tank, and the processes of regulating the water inlet quantity and load, degrading organic matters by microorganisms, separating solid and liquid and the like are carried out. The operation steps are divided into five stages: water inlet, aeration, sedimentation, drainage and idle. The SBR reaction tank realizes automation of a sewage treatment process through time alternation, and has the advantages of ideal plug flow, good organic matter removal effect, good sedimentation performance, low construction cost, easy realization of automatic control and the like, and construction and sludge backflow of a secondary sedimentation tank are saved.
The SBR reaction tank is connected between the regulating tank and the aerobic tank as a bypass, a carbon source in sewage of the regulating tank is fully utilized, the value of C/N of water inflow is regulated, and then the sewage treatment efficiency is improved, so that the effluent of the equipment reaches higher standards.
The scheme is improved on the basis of an AO water treatment process, wherein the AO water treatment process (AO is an abbreviation of anaerobic Oxic) is also called an anaerobic-aerobic process, and A (anaerobic) is an anaerobic section and is used for removing nitrogen and phosphorus; o (oxic) is an aerobic section for removing organic matter from water. It mainly comprises an adjusting tank, an anoxic tank, an aerobic tank, a sedimentation tank and a disinfection unit:
a regulating pool: domestic sewage is treated by a grid and then enters a regulating tank for regulating and homogenizing water quantity and water quality, the balance and stability of the water quantity and the water quality of a subsequent biochemical treatment system are ensured, and a pre-aeration system is arranged for oxygenation and stirring to prevent suspended particles in the sewage from precipitating and smelling, and also plays a certain role in degrading organic matters in the sewage, so that the impact resistance and the treatment effect of the whole system are improved;
an anoxic tank: the sewage is further mixed, the high-efficiency biological elastic filler in the pool is fully utilized as a bacterial carrier, indissolvable organic matters in the sewage are converted into soluble organic matters by facultative microorganisms, macromolecular organic matters are hydrolyzed into micromolecular organic matters so as to be beneficial to further oxidative decomposition of a subsequent aerobic pool, and partial nitrification and denitrification can be carried out under the action of nitrobacteria through the returned nitrocarbon nitrogen to remove ammonia nitrogen;
an oxidation pond: the pool is a core part of the sewage treatment and is divided into two sections, wherein the former section is under higher organic load, and various organic substances in the sewage are removed through the biochemical degradation and adsorption action of a large number of microbial communities of different species attached to the filler under the joint participation, so that the content of the organic substances in the sewage is greatly reduced; under the condition of lower organic load, the later stage degrades ammonia nitrogen in the sewage under the condition of sufficient oxygen content through the action of nitrobacteria, and simultaneously reduces the COD value in the sewage to a lower level, so that the sewage is purified;
a sedimentation tank: carrying out solid-liquid separation to remove suspended sludge peeled off from the biochemical tank so as to really purify the sewage;
a disinfection unit: the effluent flows into a disinfection tank for disinfection, so that the effluent quality meets the requirement of sanitary index and is discharged out in a qualified mode.
The invention has the beneficial effects that:
the aeration-sedimentation time of the SBR reaction tank is changed by adjusting the bypass ratio of the bypass part of the SBR reaction tank, so that the aim of adjusting the C/N value in the sewage is fulfilled, and the sewage treatment capacity of the whole system is improved; meanwhile, the biochemical property of the sewage can be improved along with hydrolysis reaction; after the bypass is improved on the existing equipment, the sewage treatment effect with low energy consumption, high efficiency and stable operation is still kept.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a regulating tank 1, an anoxic tank 2, an aerobic tank 3, a sedimentation tank 4, a disinfection unit 5, an SBR reaction tank 6, a nitrifying liquid return pipe 7 and a sludge return pipeline 8.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easy to understand, the invention is further described with reference to the specific drawings.
As shown in figure 1, a sewage treatment device for adjusting carbon-nitrogen ratio by using an external bypass system, which comprises an adjusting tank 1, an anoxic tank 2, an aerobic tank 3, a sedimentation tank 4 and a disinfection unit 5, wherein the adjusting tank 1 is connected into the anoxic tank 2 through a water pump, the anoxic tank 2 is connected into the aerobic tank 3 in an overflowing way, the aerobic tank 3 is connected into the sedimentation tank 4 in an overflowing way, the sedimentation tank 4 is connected into the disinfection unit 5, the sewage treatment device further comprises an SBR reaction tank 6, the water inlet end of the SBR reaction tank 6 is connected with the water outlet end of the adjusting tank 1 through a water pump, and the water outlet end of the SBR reaction tank 6 is connected into the aerobic tank 3.
The aerobic tank 3 is connected to the anoxic tank 2 through a reflux pump and a nitrifying liquid reflux pipe 7.
The bottom of the sedimentation tank 4 is connected into the anoxic tank 2 through a sludge pump and a sludge return pipeline 8.
The SBR reaction tank 6 is an existing process facility for performing activated sludge sewage treatment by a Sequencing Batch Reactor (SBR). The reaction process is carried out in one reaction tank, i.e. the functions of the sewage regulating tank, the aeration tank and the secondary sedimentation tank are integrated in one reaction tank, and the processes of regulating the water inlet quantity and load, degrading organic matters by microorganisms, separating solid and liquid and the like are carried out. The operation steps are divided into five stages: water inlet, aeration, sedimentation, drainage and idle. The SBR reaction tank 6 realizes automation of the sewage treatment process through time alternation, and the SBR reaction tank 6 has the advantages of ideal plug flow, good organic matter removing effect, good settling property, low construction cost, easy realization of automatic control and the like, and the construction of a secondary sedimentation tank and sludge backflow are saved.
The SBR reaction tank 6 is connected between the regulating tank 1 and the aerobic tank 3 as a bypass, a carbon source in sewage in the regulating tank 1 is fully utilized, the value of C/N of water inflow is regulated, the sewage treatment efficiency is further improved, and the effluent of equipment reaches higher standards.
The process flow comprises the following steps:
(1) and after the system is started, the load resisting capacity of the system is optimized. Controlling the period of a bypass system of the SBR reaction tank 6, adopting domestic sewage as the inlet water of the adjusting tank 1, and firstly changing the impact load resistance of a water inflow research system; secondly, changing the organic matter impact load resistance of the inlet water concentration research system;
(2) after the system is started, changing the bypass flow ratio of the sewage, adjusting the C/N ratio of the sewage, and optimizing the ammonia nitrogen removal performance of the whole system;
(3) after the system is started, domestic sewage is adopted for water inlet, and the treatment capacity of the system is optimized under the low-temperature condition.
The aeration-sedimentation time of the SBR reaction tank 6 is changed by adjusting the bypass ratio of the bypass part of the SBR reaction tank 6, so that the aim of adjusting the C/N value in the sewage is fulfilled, and the sewage treatment capacity of the whole system is improved; meanwhile, the biochemical property of the sewage can be improved along with hydrolysis reaction; after the bypass is improved on the existing equipment, the sewage treatment effect with low energy consumption, high efficiency and stable operation is still kept.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides an utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio, it includes equalizing basin, oxygen deficiency pond, good oxygen pond, sedimentation tank, disinfection unit, the equalizing basin passes through the water pump and inserts the oxygen deficiency pond, and oxygen deficiency pond overflow inserts good oxygen pond, and good oxygen pond overflow inserts the sedimentation tank, and the sedimentation tank inserts the disinfection unit, and its characterized in that still includes the SBR reaction tank, the SBR reaction tank is intake the end and is connected through the water pump with the equalizing basin play water end, and the SBR reaction tank play water end passes through the water pump and inserts good oxygen pond.
2. The sewage treatment device for adjusting the carbon-nitrogen ratio by using the external bypass system as claimed in claim 1, wherein the aerobic tank is connected to the anoxic tank through a reflux pump and a nitrifying liquid reflux pipe.
3. The sewage treatment device for adjusting the carbon-nitrogen ratio by using the external bypass system as claimed in claim 1, wherein the bottom of the sedimentation tank is connected to the anoxic tank through a sludge pump and a sludge return pipeline.
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| CN202010428275.0A CN111606503A (en) | 2020-05-20 | 2020-05-20 | Utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio |
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| CN202010428275.0A CN111606503A (en) | 2020-05-20 | 2020-05-20 | Utilize external bypass system to adjust sewage treatment plant of carbon-nitrogen ratio |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020072360A (en) * | 2001-03-09 | 2002-09-14 | 주식회사 제일엔지니어링 | Biological Nitrogen Removal from Nitrogen-Rich Wastewaters by Partial Nitrification and Anaerobic Ammonium Oxidation |
| CN205603405U (en) * | 2016-03-15 | 2016-09-28 | 交通运输部科学研究院 | Have small -size sewage treatment system of low energy consumption that nitrogen and phosphorus removal function and reuse of reclaimed water required concurrently |
| CN107399817A (en) * | 2017-08-08 | 2017-11-28 | 北京工业大学 | Continuous stream A2The apparatus and method of O denitrification dephosphorizations+Anammox parallel connection SBR short distance nitration Treating Municipal Sewages |
| CN208603831U (en) * | 2018-06-22 | 2019-03-15 | 江苏艾特克环境工程设计研究院有限公司 | A kind of A/O sewage-treatment plant |
| CN209428368U (en) * | 2019-01-22 | 2019-09-24 | 安阳工学院 | A kind of Alternative sewage treatment analogue system |
-
2020
- 2020-05-20 CN CN202010428275.0A patent/CN111606503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020072360A (en) * | 2001-03-09 | 2002-09-14 | 주식회사 제일엔지니어링 | Biological Nitrogen Removal from Nitrogen-Rich Wastewaters by Partial Nitrification and Anaerobic Ammonium Oxidation |
| CN205603405U (en) * | 2016-03-15 | 2016-09-28 | 交通运输部科学研究院 | Have small -size sewage treatment system of low energy consumption that nitrogen and phosphorus removal function and reuse of reclaimed water required concurrently |
| CN107399817A (en) * | 2017-08-08 | 2017-11-28 | 北京工业大学 | Continuous stream A2The apparatus and method of O denitrification dephosphorizations+Anammox parallel connection SBR short distance nitration Treating Municipal Sewages |
| CN208603831U (en) * | 2018-06-22 | 2019-03-15 | 江苏艾特克环境工程设计研究院有限公司 | A kind of A/O sewage-treatment plant |
| CN209428368U (en) * | 2019-01-22 | 2019-09-24 | 安阳工学院 | A kind of Alternative sewage treatment analogue system |
Non-Patent Citations (1)
| Title |
|---|
| 马敏, 四川科学技术出版社 * |
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Application publication date: 20200901 |