CN111592182A - Household domestic sewage treatment system and method - Google Patents
Household domestic sewage treatment system and method Download PDFInfo
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- CN111592182A CN111592182A CN202010441003.4A CN202010441003A CN111592182A CN 111592182 A CN111592182 A CN 111592182A CN 202010441003 A CN202010441003 A CN 202010441003A CN 111592182 A CN111592182 A CN 111592182A
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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
- C02F1/00—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
- 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
- C02F3/00—Biological 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
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- Organic Chemistry (AREA)
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Abstract
The invention relates to a household domestic sewage treatment system and a household domestic sewage treatment method, which comprise a household sewage discharge assembly and a sewage discharge pipe connected with the household sewage discharge assembly, wherein the sewage discharge pipe is provided with a plurality of sewage treatment devices in series, a sewage discharge pipe section between two adjacent sewage treatment devices is communicated with one end of a flow dividing pipe, and the other end of the flow dividing pipe is connected with the household sewage discharge assembly.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a household domestic sewage treatment system and method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the increasing importance of the country on the treatment of rural domestic sewage, some rural areas have already started the treatment of rural domestic sewage.
With the increasing importance of the country on the treatment of rural domestic sewage, some rural areas in China have started the treatment of rural domestic sewage. Domestic research on domestic sewage treatment devices began in 1994 at the earliest, and research institutes such as college university and Qinghua university began to introduce purification tanks from Japan and conduct experiments; at present, the Taihu lake water environment restoration demonstration project introduces 6 types of purification tanks with different treatment processes and scales from Japan, carries out long-term sewage treatment tests, and accumulates experience for the popularization of the purification tanks in China.
In recent years, domestic related enterprises have gradually absorbed the experience of distributed domestic sewage treatment in japan, and integrated sewage treatment apparatuses similar to purification tanks in different forms have been developed. With the development of the rural sewage treatment industry, the residential and rural construction department of the people's republic of China released domestic sewage treatment devices (CJ/T441-2013) in 2013.
At present, the household domestic sewage treatment device and other distributed sewage treatment equipment are widely applied and popularized, so that the rural water environment field is greatly improved. Each user is matched with a household sewage treatment device and adopts single-stage treatment, however, the inventor finds that the household sewage treatment device for part of users has the phenomena of different treatment effects and poor effluent stability due to the fact that the mobility of rural population is large, the difference of the drainage of residents is large due to the economic level and the life style of different users in the rural area, and the difference of the drainage quantity and the water quality of the same user in different time periods is large.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a household domestic sewage treatment system which can give full play to the functions of a sewage treatment device, improve the effluent quality of the sewage treatment device and improve the stability of the effluent quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a domestic sewage treatment system, which includes a domestic sewage discharge assembly, and a sewage discharge pipe connected to the domestic sewage discharge assembly, wherein the sewage discharge pipe is provided with a plurality of sewage treatment devices in series, a sewage discharge pipe section between two adjacent sewage treatment devices is communicated with one end of a diversion pipe, and the other end of the diversion pipe is connected to the domestic sewage discharge assembly.
In a second aspect, embodiments of the present invention provide a method for a domestic sewage treatment system: the sewage flowing out of the household sewage discharge assembly respectively enters the sewage discharge pipe and the flow dividing pipe, the sewage is treated by the sewage treatment devices of the sewage discharge pipe, and the flow dividing pipe guides the sewage discharged by the household sewage discharge assembly into the sewage treatment devices to supplement a carbon source for the sewage treatment devices.
The invention has the beneficial effects that:
1. the household domestic sewage treatment system adopts the plurality of sewage treatment devices to be connected in series for carrying out the multi-stage treatment of sewage, avoids the problem of poor effluent stability caused by high fluctuation of the quality of inlet water during single-stage treatment, adopts the plurality of sewage treatment devices to be connected in series, and improves the stability of the effluent within the treatment capacity range of the next sewage treatment device due to the concentration of the sewage treated by the previous sewage treatment device.
2. According to the household domestic sewage treatment system, the flow dividing pipe is arranged, so that sewage discharged by the household sewage discharge assembly can be directly introduced into the rear sewage treatment device, a carbon source is supplemented for the rear sewage treatment device, the sewage treatment device can fully exert the decontamination function, the utilization rate of equipment is improved, the sewage treatment effect and stability are improved, and compared with the case of independently installing the sewage treatment device, the operation maintenance and water quality debugging efficiency are improved, so that the household domestic sewage treatment system is suitable for the field of rural distributed sewage treatment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
the system comprises a household 1, a septic tank 2, an oil separation device 3, an integrated glass fiber reinforced plastic lifting pump station 4, a first valve 5, a first-stage sewage treatment device 6, a flow dividing pipe 7, a three-way inspection well 8, a second-stage sewage treatment device 9, a blow-off pipe 10 and a second valve 11.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As described in the background art, in the existing domestic sewage treatment devices arranged in series, the domestic sewage treatment device positioned at the rear part cannot fully exert the sewage removal effect due to lack of a carbon source.
Example 1 of an exemplary embodiment of the present application, as shown in fig. 1, a household sewage treatment system includes a household sewage discharge assembly connected to a sewage discharge facility in a household 1 through a pipe, and sewage generated in daily life of the household can enter the household sewage discharge assembly.
The household sewage discharge assembly comprises a septic tank and an oil separation tank, each household with set quantity is matched with one septic tank 2 and one oil separation device 3, the septic tank can receive sewage discharged from toilets of the households, and the oil separation device can receive sewage discharged from kitchens of the households.
In this embodiment, the septic tank adopts the existing septic tank structure, is two-lattice or three-lattice septic tank of steel-concrete structure that is formed by processing glass steel, PP, PE material, and effective volume is 0.6m3。
In this embodiment, the oil separation device adopts an oil separation tank, and the oil separation tank adopts an existing oil separation tank structure, and is a square or circular oil separation tank of a reinforced concrete structure processed by glass fiber reinforced plastic, PP, and PE materials.
In other embodiments, the oil separator can also be used for an oil separation well made of PE and having an effective volume of 70L.
The oil removal device is connected with the water inlet of the sewage lifting equipment after being converged by the water outlet pipeline of the septic tank, and sewage discharged by the oil removal device and the septic tank can enter the sewage lifting equipment.
The sewage lifting equipment adopts the existing integrated glass fiber reinforced plastic lifting pump station 4, is of a reinforced concrete structure formed by processing glass fiber reinforced plastic, PP and PE materials, utilizes the submersible sewage pump to lift the liquid in the submersible sewage pump, and adopts 16-way time control and high and low floating ball liquid level control to control the submersible sewage pump.
One of them delivery port and the blow off pipe 10 of integration glass steel lifting pump station are connected, and integration glass steel lifting pump station can promote sewage for sewage can flow into the blow off pipe under the effect of gravity.
The sewage pipe is provided with a plurality of sewage treatment devices in series, and in the embodiment, the sewage pipe is provided with two sewage treatment devices in series, namely a first-stage sewage treatment device 6 and a second-stage sewage treatment device 9.
The primary sewage treatment device and the secondary sewage treatment device can separate larger impurities in sewage, realize the dilution of high-concentration sewage by adopting fallen biomembrane sewage and nitrifying liquid through the reflux effect, and finally carry out biological method on sewageThe dye is gradually degraded. In the embodiment, the ratio of the treatment scale of the primary sewage treatment device to the treatment scale of the secondary sewage treatment device is 2:1-3:1, and the treatment scales of the primary sewage treatment device and the secondary sewage treatment device which meet the industrial, local and national standards are 0.3-10m3A household domestic sewage treatment device. Preferably, the primary sewage treatment device and the secondary sewage treatment device in the embodiment both adopt purifying tanks.
Be provided with first valve 5 between integration glass steel promotes pump station and the one-level sewage treatment plant, first valve adopts the ball valve, can understand, other types' valves such as butterfly valve also can be adopted to first valve, as long as can adjust the water aperture size of crossing of blow off pipe.
Be provided with the confluence well on the blow off pipe section between one-level sewage treatment plant and the second grade sewage treatment plant, the confluence well adopts the tee bend inspection shaft 8 of PE material, and wherein two interfaces of tee bend inspection shaft are connected with the blow off pipe, and the other one interface of tee bend inspection shaft is connected with the one end of shunt tubes 7, and the other end and another delivery port of integration glass steel lifting pump station of shunt tubes are connected.
The shunt tubes adopt pressure pipelines made of PE materials, one end of each shunt tube is communicated with the sewage draining pipe through a tee inspection well, the other end of each shunt tube is connected with another water outlet of the integrated glass fiber reinforced plastic lifting pump station, the shunt tubes are provided with second valves 11, the second valves adopt ball valves, and it can be understood that the second valves can also adopt butterfly valves or other types of valves as long as the water passing opening degree of the sewage draining pipe can be adjusted.
Example 2
The embodiment discloses a method for a household domestic sewage treatment system, which comprises the following steps: taking 6 households as an example for explanation, sewage discharged from kitchens of 6 households enters the oil separation device for treatment, sewage discharged from toilets enters the septic tank for treatment, sewage discharged from the oil separation device and the septic tank enters the sewage lifting equipment for lifting, and the sewage lifting equipment respectively sends the lifted sewage into the flow dividing pipe and the primary sewage treatment device according to a set proportion.
The sewage flowing out of the water outlet of the primary sewage treatment device enters the secondary sewage treatment device, the sewage in the shunt pipe directly enters the secondary sewage treatment device through the confluence well and the discharge pipe, the water inlet proportion of the primary sewage treatment device and the secondary sewage treatment device is controlled to be 1:1-2:1, in the embodiment, the first valve and the second valve are adjusted to be set in opening degrees, and after the opening degrees of the first valve and the second valve are adjusted, the sewage is respectively pumped into the primary sewage treatment device and the shunt pipe by the sewage lifting device according to the proportion of 7: 3. And the sewage in the shunt pipe enters a secondary sewage treatment device for treatment and then is supplemented to a natural water body.
Because partial sewage discharged by the sewage lifting equipment directly enters the secondary sewage treatment device, a carbon source is supplemented for the secondary sewage treatment device, the treatment function of the secondary sewage treatment device can be better exerted, and the sewage treatment effect is improved.
In the embodiment, compared with the adoption of one primary sewage treatment device, the total nitrogen removal effect is improved by 75%, compared with the simple series connection of the primary sewage treatment device and the secondary sewage treatment device without a flow dividing pipe, the total nitrogen removal effect is improved by 17.47%, the water quality treatment effect is enhanced, and the method is suitable for the field of rural distributed sewage treatment.
Because the inlet water contains larger sundries, the oil separation tank and the septic tank can retain the larger sundries in the septic tank or the oil separation tank, and the blockage of the pipeline is avoided.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A household domestic sewage treatment system is characterized by comprising a household sewage discharge assembly and a sewage discharge pipe connected with the household sewage discharge assembly, wherein the sewage discharge pipe is provided with a plurality of sewage treatment devices in series, a sewage discharge pipe section between two adjacent sewage treatment devices is communicated with one end of a flow dividing pipe, and the other end of the flow dividing pipe is connected with the household sewage discharge assembly.
2. The domestic sewage treatment system of claim 1 wherein said domestic sewage assembly comprises a septic tank and an oil separator, said septic tank and said oil separator being capable of receiving sewage from a toilet and a kitchen of said household, respectively.
3. The domestic sewage treatment system of claim 1 wherein the water outlet of the domestic sewage assembly is connected to the water inlet of the sewage lifting device, one of the water outlets of the sewage lifting device is connected to the sewage pipe, and the remaining water outlets are connected to the flow dividing pipe.
4. The domestic sewage treatment system of claim 3 wherein a first valve is disposed between said sewage lifting device and said sewage treatment apparatus.
5. The domestic sewage treatment system of claim 1 wherein said diverter pipe is provided with a second valve.
6. The domestic sewage treatment system of claim 1 wherein the section of sewer pipe between two adjacent sewage treatment devices is provided with a confluence well, said confluence well being in communication with the ends of the diversion pipes.
7. The domestic sewage treatment system of claim 6 wherein said collecting well is a three-way manhole, two ports of said three-way manhole are connected to a sewage drain pipe, and the remaining port is connected to a shunt pipe.
8. A method for domestic sewage treatment system according to any of claims 1 to 7 wherein the domestic sewage from the sewage treatment assembly is fed into a sewage pipe and a bypass pipe, respectively, the sewage being treated by a plurality of sewage treatment units in the sewage pipe, and the bypass pipe leading the sewage from the domestic sewage treatment assembly to the sewage treatment unit for supplementing the sewage treatment unit with carbon source.
9. The method of claim 8, wherein the ratio of the water inlet of the former sewage treatment device to the water inlet of the latter sewage treatment device in two adjacent sewage treatment devices is 1: 1-2:1.
10. The method of claim 8, wherein the ratio of the treatment scale of the former sewage treatment unit to the latter sewage treatment unit in two adjacent sewage treatment units is 2:1 to 3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010441003.4A CN111592182A (en) | 2020-05-22 | 2020-05-22 | Household domestic sewage treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010441003.4A CN111592182A (en) | 2020-05-22 | 2020-05-22 | Household domestic sewage treatment system and method |
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| Publication Number | Publication Date |
|---|---|
| CN111592182A true CN111592182A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010441003.4A Pending CN111592182A (en) | 2020-05-22 | 2020-05-22 | Household domestic sewage treatment system and method |
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| CN (1) | CN111592182A (en) |
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2020
- 2020-05-22 CN CN202010441003.4A patent/CN111592182A/en active Pending
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