CN110697980A - Urban building sewage treatment system and treatment method and filter element material preparation process - Google Patents
Urban building sewage treatment system and treatment method and filter element material preparation process Download PDFInfo
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- CN110697980A CN110697980A CN201911002979.5A CN201911002979A CN110697980A CN 110697980 A CN110697980 A CN 110697980A CN 201911002979 A CN201911002979 A CN 201911002979A CN 110697980 A CN110697980 A CN 110697980A
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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
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
- B01D39/06—Inorganic material, e.g. asbestos fibres, glass beads or fibres
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic 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
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
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Abstract
The invention discloses an urban building sewage treatment system, a treatment method and a filter element material preparation process, wherein the urban building sewage treatment system comprises a grid pool, one side of the grid pool is connected to a sewage metering pool through a communicating pipe, and the other side of the grid pool is sequentially connected with a regulating pool, a primary sedimentation and filtration pool, an A-level biological contact oxidation pool, an O-level biological contact oxidation pool, a secondary sedimentation and filtration pool, a disinfection pool and a clean water pool which are arranged in series through communicating pipes; a sludge tank is arranged between the primary sedimentation filtering tank and the secondary sedimentation filtering tank, a composite filter element for filtering sewage is arranged in the primary sedimentation filtering tank and the secondary sedimentation filtering tank, and aeration systems are respectively arranged at the bottoms of the regulating tank and the O-grade biological contact oxidation tank. The urban building sewage is collected into the sewage metering tank, and is purified step by step through each tank body, so that the sewage is purified, and the quality of the treated effluent reaches the primary discharge standard according to Integrated wastewater discharge Standard GB 897-1996.
Description
Technical Field
The invention belongs to the technical field of urban building water body purification and sewage treatment, and particularly relates to an urban building sewage treatment system, a treatment method and a filter element material preparation process.
Background
People can have a large amount of domestic sewage every day, especially buildings with a large number of people. Domestic sewage is mainly discharged water generated by various kitchen water, washing water and toilet water used in human life, mainly is excrement and washing sewage, and is mostly nontoxic inorganic salts. The daily discharge amount of domestic sewage of each person in the city is 150-400L, and the amount of the domestic sewage is closely related to the living standard. The domestic sewage contains a large amount of organic matters, such as cellulose, starch, saccharides, fat protein and the like; also frequently contain pathogenic bacteria, viruses and parasite eggs; chlorides, sulfates, phosphates, bicarbonates, and sodium, potassium, calcium, magnesium, and the like, of inorganic salts. The total characteristics are that the nitrogen, sulfur and phosphorus contents are high, and the malodorous substances are easy to generate under the action of anaerobic bacteria.
The existing building sewage treatment system mainly uses septic tank sedimentation and anaerobic fermentation to treat domestic sewage, although the system has a certain removal effect on SS, the system also has a plurality of defects, the first treatment method has longer treatment period and slower treatment efficiency, and the second treatment method has higher concentration of suspended substances, BOD, total nitrogen and total phosphorus in the effluent and can not reach the discharge standard.
Disclosure of Invention
The invention provides an urban building sewage treatment system, a treatment method and a filter element material preparation process, and solves the problems that the existing building sewage treatment system mainly uses a septic tank precipitation method, the treatment period is longer, the treatment efficiency is slower, and suspended substances, BOD, total nitrogen and total phosphorus in effluent are still higher and can not reach the discharge standard.
The technical scheme adopted by the invention for solving the technical problem is as follows: a sewage treatment system for urban buildings comprises a sewage metering tank, a grid tank, an adjusting tank, a primary sedimentation filtering tank, an A-level biological contact oxidation tank, an O-level biological contact oxidation tank, a secondary sedimentation filtering tank, a sludge tank, a disinfection tank and a clean water tank, wherein one side of the grid tank is connected to the sewage metering tank through a first communicating pipe, and the other side of the grid tank is sequentially connected and serially provided with the adjusting tank, the primary sedimentation filtering tank, the A-level biological contact oxidation tank, the O-level biological contact oxidation tank, the secondary sedimentation filtering tank, the disinfection tank and the clean water tank through a second communicating pipe;
a sludge tank is also arranged between the primary sedimentation filter tank and the secondary sedimentation filter tank, sludge in the primary sedimentation filter tank is lifted to the sludge tank through a sludge lifting pump and a sludge pipeline, one part of sludge at the bottom of the secondary sedimentation filter tank is lifted to the sludge tank through the sludge lifting pump and the sludge pipeline, the other part of sludge flows back to the O-grade biological contact oxidation tank through the sludge lifting pump and the sludge pipeline, supernatant in the sludge tank flows back to the regulating tank, and sludge at the bottom of the sludge concentration tank is periodically sucked away;
and the primary sedimentation filtering tank and the secondary sedimentation filtering tank are internally provided with composite filter elements for filtering sewage, and the bottom parts of the regulating tank and the O-level biological contact oxidation tank are respectively provided with an aeration system.
Preferably, a grid and an oil separation net are arranged in the grid pond.
Preferably, the aeration system is an aeration pipe, an aeration nozzle is arranged on the aeration pipe, one end of the aeration pipe is connected to a fan room, and an air blower is arranged in the fan room.
Preferably, a chlorine dioxide generator is arranged in the disinfection tank.
The preparation process of the filter element material used by the urban building sewage treatment system comprises the following steps of: 30-50% of activated carbon cellulose, 10-35% of diatomite, 10-15% of graphene oxide and 10-15% of zeolite powder;
the preparation steps of the composite filter element material are as follows: weighing the activated carbon cellulose, the diatomite, the graphene oxide and the zeolite powder to obtain a mixed raw material, wherein the mixed raw material and water are mixed according to a mass ratio of 1: 8-15 are mixed evenly to form the composite filter element material.
A treatment method of an urban building sewage treatment system comprises any one of the urban building sewage treatment systems, and comprises the following steps:
1) collecting urban building sewage into a sewage metering tank, and automatically treating the urban building sewage into a grid tank when the liquid level of the sewage metering tank reaches a certain height;
2) removing coarse suspended matters and impurities in sewage through a grid pond to avoid blocking a water pump, manually cleaning grid slag regularly, transporting the grid slag regularly to protect the normal operation of subsequent equipment, and then conveying the sewage in a sewage metering pond to a regulating pond through a sewage treatment pump;
3) laying an aeration system in a regulating reservoir, fully balancing the water quantity and the water quality of domestic sewage in the regulating reservoir, conveying the sewage in the regulating reservoir to a primary sedimentation filter tank through a lift pump, carrying out primary filtration, conveying the sewage to an A-level biological contact oxidation tank, mainly removing nitrogen and phosphorus, conveying the sewage to an O-level biological contact oxidation tank, mainly removing organic matters in the water, conveying the sewage to a secondary sedimentation filter tank for precise filtration treatment, returning part of activated sludge in the secondary sedimentation filter tank to the O-level biological contact oxidation tank, and continuing aerobic biochemical treatment;
4) the supernatant fluid passing through the secondary sedimentation filtering tank flows into a disinfection tank for disinfection, and the disinfected water enters a clean water tank.
Compared with the prior art, the invention has the beneficial effects that:
the urban building sewage is collected into the sewage metering tank, purification treatment is carried out step by step through each tank body, and pollutants in the sewage are degraded and removed step by step through each tank body in an ecological treatment mode, so that the sewage is purified. The quality of the treated effluent reaches the first grade discharge standard according to Integrated wastewater discharge Standard GB 897-1996.
The urban building sewage treatment system can effectively remove organic pollutants, partial nitrogen, phosphorus and the like in domestic sewage, has low cost, convenient construction, simple operation maintenance and management and simplified process flow, achieves the aim of purifying the domestic sewage, can adapt to the requirement of urban building sewage treatment that a clean water tank is used for recovering, temporarily storing purified water after purification and disinfection are finished, can reuse the effluent of the clean water tank as landscape water supplement, toilet flushing water, vehicle washing water and the like, realizes the reuse of water resources, and reduces the pollution and waste of the water resources.
Drawings
FIG. 1 is a schematic view of a connection structure of a sewage treatment system for urban construction according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood and implemented by those skilled in the art, the present invention is further described below with reference to the following specific embodiments and the accompanying drawings, but the embodiments are not meant to limit the present invention.
Example 1
A sewage treatment system for urban buildings comprises a sewage metering tank, a grating tank, an adjusting tank, a primary sedimentation filtering tank, an A-level biological contact oxidation tank, an O-level biological contact oxidation tank, a secondary sedimentation filtering tank, a sludge tank, a disinfection tank and a clean water tank, and is characterized in that one side of the grating tank is connected to the sewage metering tank through a communicating pipe, and the other side of the grating tank is sequentially connected with the adjusting tank, the primary sedimentation filtering tank, the A-level biological contact oxidation tank, the O-level biological contact oxidation tank, the secondary sedimentation filtering tank, the disinfection tank and the clean water tank which are arranged in series through the communicating pipe;
a sludge tank is also arranged between the primary sedimentation filter tank and the secondary sedimentation filter tank, sludge in the primary sedimentation filter tank is lifted to the sludge tank through a sludge lifting pump and a sludge pipeline, one part of sludge at the bottom of the secondary sedimentation filter tank is lifted to the sludge tank through the sludge lifting pump and the sludge pipeline, the other part of sludge flows back to the O-grade biological contact oxidation tank through the sludge lifting pump and the sludge pipeline, supernatant in the sludge tank flows back to the regulating tank, and sludge at the bottom of the sludge concentration tank is periodically sucked away;
the composite filter element used for filtering sewage is arranged in the primary sedimentation and filtration tank and the secondary sedimentation and filtration tank, the composite filter element in the primary sedimentation and filtration tank and the secondary sedimentation and filtration tank can purify the sewage passing through, and the bottom parts of the regulating tank and the O-grade biological contact oxidation tank are respectively provided with an aeration system.
In order to remove coarse suspended matters, impurities and oil in the sewage, a grid and an oil separation net are arranged in the grid pool.
In this embodiment, the aeration system is the aeration pipe, is equipped with the aeration shower nozzle on the aeration pipe, and the one end of aeration pipe is connected to the fan room, is equipped with the air-blower in the fan room.
In addition, a chlorine dioxide generator is arranged in the disinfection tank and is used for disinfecting water entering the room disinfection tank.
The preparation process of the filter element material used by the urban building sewage treatment system comprises the following steps of: 50% of activated carbon cellulose, 30% of diatomite, 10% of graphene oxide and 10% of zeolite powder;
the preparation steps of the composite filter element material are as follows: weighing the activated carbon cellulose, the diatomite, the graphene oxide and the zeolite powder to obtain a mixed raw material, wherein the mixed raw material and water are mixed according to a mass ratio of 1: 10, and mixing uniformly to form the composite filter element material.
A treatment method of an urban building sewage treatment system comprises any one of the urban building sewage treatment systems, and comprises the following steps:
1) collecting urban building sewage into a sewage metering tank, and automatically treating the urban building sewage into a grid tank when the liquid level of the sewage metering tank reaches a certain height;
2) removing coarse suspended matters and impurities in sewage through a grid pond to avoid blocking a water pump, manually cleaning grid slag regularly, transporting the grid slag regularly to protect the normal operation of subsequent equipment, and then conveying the sewage in a sewage metering pond to a regulating pond through a sewage treatment pump;
3) laying an aeration system in a regulating reservoir, fully balancing the water quantity and the water quality of domestic sewage in the regulating reservoir, conveying the sewage in the regulating reservoir to a primary sedimentation filter tank through a lift pump, carrying out primary filtration, conveying the sewage to an A-level biological contact oxidation tank, mainly removing nitrogen and phosphorus, conveying the sewage to an O-level biological contact oxidation tank, mainly removing organic matters in the water, conveying the sewage to a secondary sedimentation filter tank for precise filtration treatment, returning part of activated sludge in the secondary sedimentation filter tank to the O-level biological contact oxidation tank, and continuing aerobic biochemical treatment;
4) the supernatant fluid passing through the secondary sedimentation filtering tank flows into a disinfection tank for disinfection, and the disinfected water enters a clean water tank.
Example 2
The urban building sewage treatment system of this embodiment is the same as embodiment 1, except that the inside composite filter element that is used for filtering sewage that is equipped with of primary sedimentation filtration pond and second grade sedimentation filtration pond, and composite filter element material is prepared by following component by weight in this embodiment: 50% of activated carbon cellulose, 20% of diatomite, 15% of graphene oxide and 15% of zeolite powder;
the preparation steps of the composite filter element material are as follows: weighing the activated carbon cellulose, the diatomite, the graphene oxide and the zeolite powder to obtain a mixed raw material, wherein the mixed raw material and water are mixed according to a mass ratio of 1: 8, uniformly mixing to form the composite filter element material.
Example 3
The urban building sewage treatment system of this embodiment is the same as embodiment 1, except that the inside composite filter element that is used for filtering sewage that is equipped with of primary sedimentation filtration pond and second grade sedimentation filtration pond, and composite filter element material is prepared by following component by weight in this embodiment: 40% of activated carbon cellulose, 30% of diatomite, 15% of graphene oxide and 15% of zeolite powder;
the preparation steps of the composite filter element material are as follows: weighing the activated carbon cellulose, the diatomite, the graphene oxide and the zeolite powder to obtain a mixed raw material, wherein the mixed raw material and water are mixed according to a mass ratio of 1: 10, and mixing uniformly to form the composite filter element material.
In order to test the effect of the sewage treatment system for urban building on sewage treatment, taking example 1 as an example, the sewage treatment system for urban building is adopted to test the quality of the effluent water in the clean water tank after the urban building sewage is treated, and the test items and methods are shown in table 1 below.
TABLE 1 test items and methods
| Detecting items | Detection method |
| COD (chemical oxygen demand) | Potassium dichromate process |
| NH3-N (Ammonia nitrogen content) | Colorimetric method using Nashi reagent |
| TN (Total Nitrogen content) | Potassium persulfate oxidation ultraviolet spectrophotometry |
| TP (Total phosphorus content) | Aluminium ladder spectrophotometric method |
The COD concentration of the raw water is 360.5mg/L, NH3The concentration of N is 48.2mg/L, the concentration of TN is 42.3mg/L, and the concentration of TP is 9.2 mg/L; after the treatment, the COD concentration of the effluent in the clear water tank is 30.6mg/L, and NH3The concentration of-N is 5.2mg/L, the concentration of TN is 3.2mg/L, and the concentration of TP is 0.6mg/L
In conclusion, the sewage treatment system in the embodiment 1 of the invention has good treatment effect on urban building sewage, and the quality of the treated effluent reaches the first-class discharge standard according to the Integrated wastewater discharge Standard GB 897-1996.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, it is intended that such changes and modifications be included within the scope of the appended claims and their equivalents.
Claims (6)
1. A sewage treatment system for urban buildings comprises a sewage metering tank, a grating tank, an adjusting tank, a primary sedimentation filtering tank, an A-level biological contact oxidation tank, an O-level biological contact oxidation tank, a secondary sedimentation filtering tank, a sludge tank, a disinfection tank and a clean water tank, and is characterized in that one side of the grating tank is connected to the sewage metering tank through a first communicating pipe, and the other side of the grating tank is sequentially connected and serially connected through a second communicating pipe to form the adjusting tank, the primary sedimentation filtering tank, the A-level biological contact oxidation tank, the O-level biological contact oxidation tank, the secondary sedimentation filtering tank, the disinfection tank and the clean water tank;
a sludge tank is also arranged between the primary sedimentation filter tank and the secondary sedimentation filter tank, sludge in the primary sedimentation filter tank is lifted to the sludge tank through a sludge lifting pump and a sludge pipeline, one part of sludge at the bottom of the secondary sedimentation filter tank is lifted to the sludge tank through the sludge lifting pump and the sludge pipeline, the other part of sludge flows back to the O-grade biological contact oxidation tank through the sludge lifting pump and the sludge pipeline, supernatant in the sludge tank flows back to the regulating tank, and sludge at the bottom of the sludge concentration tank is periodically sucked away;
and the primary sedimentation filtering tank and the secondary sedimentation filtering tank are internally provided with composite filter elements for filtering sewage, and the bottom parts of the regulating tank and the O-level biological contact oxidation tank are respectively provided with an aeration system.
2. The municipal building wastewater treatment system according to claim 1, wherein a grid and an oil-separating mesh are provided in the grid tank.
3. The municipal building sewage treatment system according to claim 1, wherein the aeration system is an aeration pipe, an aeration nozzle is arranged on the aeration pipe, one end of the aeration pipe is connected to a fan room, and a blower is arranged in the fan room.
4. The municipal building wastewater treatment system according to claim 1, wherein a chlorine dioxide generator is provided in said disinfection tank.
5. The preparation process of the filter element material for the urban building sewage treatment system according to claim 1, wherein the composite filter element material is prepared from the following components in parts by weight: 30-50% of activated carbon cellulose, 10-35% of diatomite, 10-15% of graphene oxide and 10-15% of zeolite powder;
the preparation steps of the composite filter element material are as follows: weighing the activated carbon cellulose, the diatomite, the graphene oxide and the zeolite powder to obtain a mixed raw material, wherein the mixed raw material and water are mixed according to a mass ratio of 1: 8-15 are mixed evenly to form the composite filter element material.
6. A method for treating sewage from urban building, comprising the sewage treatment system of any one of claims 1 to 4, comprising the steps of:
1) collecting urban building sewage into a sewage metering tank, and automatically treating the urban building sewage into a grid tank when the liquid level of the sewage metering tank reaches a certain height;
2) removing coarse suspended matters and impurities in sewage through a grid pond to avoid blocking a water pump, manually cleaning grid slag regularly, transporting the grid slag regularly to protect the normal operation of subsequent equipment, and then conveying the sewage in a sewage metering pond to a regulating pond through a sewage treatment pump;
3) laying an aeration system in a regulating reservoir, fully balancing the water quantity and the water quality of domestic sewage in the regulating reservoir, conveying the sewage in the regulating reservoir to a primary sedimentation filter tank through a lift pump, carrying out primary filtration, conveying the sewage to an A-level biological contact oxidation tank, mainly removing nitrogen and phosphorus, conveying the sewage to an O-level biological contact oxidation tank, mainly removing organic matters in the water, conveying the sewage to a secondary sedimentation filter tank for precise filtration treatment, returning part of activated sludge in the secondary sedimentation filter tank to the O-level biological contact oxidation tank, and continuing aerobic biochemical treatment;
4) the supernatant fluid passing through the secondary sedimentation filtering tank flows into a disinfection tank for disinfection, and the disinfected water enters a clean water tank.
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Cited By (1)
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| CN111875158A (en) * | 2020-07-07 | 2020-11-03 | 安庆常润米业股份有限公司 | A waste water dephosphorization system for rice deep-processing |
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