CN114163023A - Domestic sewage treatment process - Google Patents
Domestic sewage treatment process Download PDFInfo
- Publication number
- CN114163023A CN114163023A CN202111502655.5A CN202111502655A CN114163023A CN 114163023 A CN114163023 A CN 114163023A CN 202111502655 A CN202111502655 A CN 202111502655A CN 114163023 A CN114163023 A CN 114163023A
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- Prior art keywords
- sewage
- tank
- sewage treatment
- treatment process
- domestic
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a domestic sewage treatment process, which comprises the steps of removing floating objects in domestic sewage through a grating tank, then flowing into a sewage pretreatment tank for regulating the pH value, adding a flocculating agent, removing fine particle impurities by adopting aeration operation, then entering a sewage treatment tank for removing organic matters and ammonia nitrogen in the domestic sewage through ozone catalytic oxidation, and finally filtering through an immersed ultrafiltration device to obtain effluent meeting the first-level A standard of urban sewage discharge. The invention belongs to the technical field of sewage treatment, and particularly relates to a domestic sewage treatment process with low investment, low energy consumption and simple equipment operation and maintenance.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a domestic sewage treatment process.
Background
Domestic sewage is mainly discharged water of various kitchen water, washing water and toilet water generated in human activities, and is mostly nontoxic inorganic salts. The sewage generated in the human life process is one of the main pollution sources of water, and the domestic sewage contains a large amount of organic matters, such as cellulose, starch, sugar, fat protein and the like, and also often contains pathogenic bacteria, viruses and parasitic ova; inorganic salts such as chloride, sulfate, phosphate, bicarbonate, sodium, potassium, calcium, magnesium, etc. are generally characterized by high contents of nitrogen, sulfur and phosphorus, and are easy to generate malodorous substances under the action of anaerobic bacteria.
Patent application No. CN201910824500.X discloses a process for micro-electrolysis treatment of domestic sewage, which comprises the steps of enabling the domestic sewage to enter a grid pool to remove floating objects, then entering a sewage regulating pool to regulate uniform water quality, then entering a micro-electrolysis device to perform catalytic oxidation degradation on organic matters in the sewage through a catalyst to oxidize ammonia nitrogen in the sewage into nitrogen, generating insoluble iron phosphate through generated iron ions and phosphate radicals to remove nitrogen and phosphorus, and finally entering an immersed ultrafiltration device to remove generated suspended matters and bacteria in the domestic sewage to obtain effluent meeting the first-level A standard of urban sewage discharge.
Disclosure of Invention
In order to solve the problems, the invention provides a domestic sewage treatment process to solve the problems.
1. In order to realize the functions, the technical scheme adopted by the invention is as follows: a domestic sewage treatment process comprises the following steps:
1) arranging a grating pool which is communicated with domestic sewage to remove floating objects such as hair, fabrics and the like;
2) arranging a sewage pretreatment tank behind the grid tank, so that the sewage treated by the grid tank enters the sewage pretreatment tank to adjust the pH of the sewage;
3) adding a flocculating agent into the sewage pretreatment tank, then aerating the sewage pretreatment tank, scraping upper layer floating foam, and removing fine particle impurities;
4) arranging a sewage treatment tank behind the sewage pretreatment tank, enabling the sewage treated by the sewage pretreatment tank to enter the sewage treatment tank, adding a catalyst into the sewage treatment tank, injecting ozone, and carrying out oxidation treatment on organic matters and ammonia nitrogen in the sewage;
5) and pumping the sewage treated in the sewage treatment tank into an immersed ultrafiltration device to remove generated suspended matters and bacteria in the sewage to obtain effluent meeting the first-class A standard of urban sewage discharge.
Further, a bottom discharge port of the immersed ultrafiltration device in the step 5) is connected with an inlet of the dehydrator through a sludge pump, sludge cakes generated by the dehydrator are transported outwards, and the filter pressing liquid is circulated to the immersed ultrafiltration device.
Further, the catalyst in the step 4) is gamma-Al2O3The active component of the supported catalyst comprises Cu and Mn.
Further, the ozone in the step 4) is injected by adopting a jet flow mode.
The invention adopts the structure to obtain the following beneficial effects: according to the domestic sewage treatment process provided by the invention, the sewage pretreatment tank is additionally arranged, fine particle impurities in the sewage are removed through combination of aeration and a flocculating agent, the pressure of subsequent treatment is reduced, ozone is injected in a jet flow mode under the condition of adding a catalyst, organic matters and ammonia nitrogen in the sewage can be subjected to oxidation treatment, the sewage is driven to flow, the treatment efficiency of the domestic sewage is increased, and compared with the traditional treatment process, the domestic sewage treatment process has the advantages of low investment, low energy consumption, simplicity in equipment operation and maintenance and the like.
Drawings
FIG. 1 is a schematic flow chart of a domestic sewage treatment process of the present invention.
Detailed Description
The technical solutions of the present invention will be described in further detail with reference to specific implementations, and all the portions of the present invention that are not described in detail in the technical features or the connection relationships of the present invention are the prior art.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in FIG. 1, the domestic sewage treatment process of the invention comprises the following steps:
1) arranging a grating pool which is communicated with domestic sewage to remove floating objects such as hair, fabrics and the like;
2) arranging a sewage pretreatment tank behind the grid tank, so that the sewage treated by the grid tank enters the sewage pretreatment tank to adjust the pH of the sewage;
3) adding a flocculating agent into the sewage pretreatment tank, then aerating the sewage pretreatment tank, scraping upper layer floating foam, and removing fine particle impurities;
4) a sewage treatment tank is arranged behind the sewage pretreatment tank, so that the sewage treated by the sewage pretreatment tank enters the sewage treatment tank, and the sewage treatment tank is filled with sewageAdding catalyst gamma-Al2O3The active components of the supported catalyst comprise Cu and Mn, then ozone is injected in a jet flow mode, and organic matters and ammonia nitrogen in the wastewater are oxidized to remove the organic matters and ammonia nitrogen in the domestic sewage;
5) and (3) pumping the sewage treated in the sewage treatment tank into an immersed ultrafiltration device, removing generated suspended matters and bacteria in the sewage to obtain effluent meeting the first-level A standard of urban sewage discharge, connecting a discharge outlet at the bottom of the immersed ultrafiltration device with an inlet of a dehydrator through a sludge pump, transporting mud cakes generated by the dehydrator outwards, and circulating the press filtrate to the immersed ultrafiltration device.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A domestic sewage treatment process is characterized by comprising the following steps:
1) arranging a grating pool which is communicated with domestic sewage to remove floating objects such as hair, fabrics and the like;
2) arranging a sewage pretreatment tank behind the grid tank, so that the sewage treated by the grid tank enters the sewage pretreatment tank to adjust the pH of the sewage;
3) adding a flocculating agent into the sewage pretreatment tank, then aerating the sewage pretreatment tank, scraping upper layer floating foam, and removing fine particle impurities;
4) arranging a sewage treatment tank behind the sewage pretreatment tank, enabling the sewage treated by the sewage pretreatment tank to enter the sewage treatment tank, adding a catalyst into the sewage treatment tank, injecting ozone, and carrying out oxidation treatment on organic matters and ammonia nitrogen in the sewage;
5) and pumping the sewage treated in the sewage treatment tank into an immersed ultrafiltration device to remove generated suspended matters and bacteria in the sewage to obtain effluent meeting the first-class A standard of urban sewage discharge.
2. The domestic sewage treatment process according to claim 1, wherein the bottom discharge port of the submerged ultrafiltration device in the step 5) is connected with the inlet of the dehydrator through a sludge pump, the sludge cake generated by the dehydrator is transported outwards, and the press filtrate is circulated to the submerged ultrafiltration device.
3. The domestic sewage treatment process according to claim 1, wherein said catalyst in step 4) is γ -Al2O3The active component of the supported catalyst comprises Cu and Mn.
4. The domestic sewage treatment process of claim 1, wherein the ozone in step 4) is injected by means of jet flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502655.5A CN114163023A (en) | 2021-12-10 | 2021-12-10 | Domestic sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502655.5A CN114163023A (en) | 2021-12-10 | 2021-12-10 | Domestic sewage treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114163023A true CN114163023A (en) | 2022-03-11 |
Family
ID=80485223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111502655.5A Pending CN114163023A (en) | 2021-12-10 | 2021-12-10 | Domestic sewage treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114163023A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0975995A (en) * | 1995-09-19 | 1997-03-25 | Hitachi Ltd | Removing system of high concentration ammonia nitrogen |
| KR20030054734A (en) * | 2001-12-26 | 2003-07-02 | 주식회사환경과생명 | Industrial wastewater reusing system using combination froth separation process, hollow fiber filter process and advanced oxidation process |
| CN101041503A (en) * | 2007-03-20 | 2007-09-26 | 哈尔滨工业大学 | Method for removing water ammonia nitrogen by ozone catalytic oxidation intensification |
| WO2008041051A2 (en) * | 2006-10-05 | 2008-04-10 | Chemical Research Development S.A. | Waste water purification involving a short chemical hyperoxidation step |
| CN104891705A (en) * | 2015-05-12 | 2015-09-09 | 山东金昊三扬环保机械股份有限公司 | Method used for treating sewage via cooperation of physicochemical treatment and ultrafiltration |
| CN110606602A (en) * | 2019-09-02 | 2019-12-24 | 武汉尚源新能环境有限公司 | Domestic sewage treatment process |
| RU2736050C1 (en) * | 2020-06-17 | 2020-11-11 | Сергей Яковлевич Чернин | Installation for treatment of waste water, drainage and over-slime waters of industrial facilities and facilities for arrangement of production and consumption wastes |
| CN112978996A (en) * | 2021-02-26 | 2021-06-18 | 中化环境科技工程有限公司 | Method for deeply treating organic matters and ammonia nitrogen in titanium dioxide production wastewater |
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2021
- 2021-12-10 CN CN202111502655.5A patent/CN114163023A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0975995A (en) * | 1995-09-19 | 1997-03-25 | Hitachi Ltd | Removing system of high concentration ammonia nitrogen |
| KR20030054734A (en) * | 2001-12-26 | 2003-07-02 | 주식회사환경과생명 | Industrial wastewater reusing system using combination froth separation process, hollow fiber filter process and advanced oxidation process |
| WO2008041051A2 (en) * | 2006-10-05 | 2008-04-10 | Chemical Research Development S.A. | Waste water purification involving a short chemical hyperoxidation step |
| CN101041503A (en) * | 2007-03-20 | 2007-09-26 | 哈尔滨工业大学 | Method for removing water ammonia nitrogen by ozone catalytic oxidation intensification |
| CN104891705A (en) * | 2015-05-12 | 2015-09-09 | 山东金昊三扬环保机械股份有限公司 | Method used for treating sewage via cooperation of physicochemical treatment and ultrafiltration |
| CN110606602A (en) * | 2019-09-02 | 2019-12-24 | 武汉尚源新能环境有限公司 | Domestic sewage treatment process |
| RU2736050C1 (en) * | 2020-06-17 | 2020-11-11 | Сергей Яковлевич Чернин | Installation for treatment of waste water, drainage and over-slime waters of industrial facilities and facilities for arrangement of production and consumption wastes |
| CN112978996A (en) * | 2021-02-26 | 2021-06-18 | 中化环境科技工程有限公司 | Method for deeply treating organic matters and ammonia nitrogen in titanium dioxide production wastewater |
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