CN217051950U - Rural domestic sewage treatment system - Google Patents

Abstract

The utility model relates to a rural domestic sewage treatment system. Adopt rural domestic sewage treatment system, can produce sewage with rural lavatory, kitchen guarding and carry out innoxious, reduction treatment to carry out resourceful treatment and utilization to the mud that produces in its processing procedure. The utility model carries out preliminary crushing and separation on the kitchen waste, the washing waste water and the toilet flushing waste water, directly leads the homogenized solid matter into the solid reducing device for harmless and reducing treatment, carries out resource treatment on the sludge generated in the treatment process, and is beneficial to the resource recycling of the solid waste; and simultaneously, rural domestic sewage treatment system carry out preliminary smashing, separation before waste water gets into sewage treatment system, greatly reduced sewage treatment system intake pollutant concentration, improved sewage treatment system's treatment effeciency to the sewage treatment cost has been reduced.

Description

Rural domestic sewage treatment system

Technical Field

The utility model belongs to the technical field of domestic sewage treatment, concretely relates to rural domestic sewage treatment system.

Background

In recent years, with the development of rural economy, the living standard of rural people is greatly improved, rural infrastructure and living environment are greatly changed, and the discharge amount of rural domestic sewage is continuously increased. As domestic sewage is not discharged into a sewage treatment system in most rural areas at present, the sewage treatment rate is low, most of domestic sewage is randomly discharged into rivers or is freely infiltrated into the underground after being discharged into outdoor open space, and the mode can seriously pollute the surrounding environment and influence the construction of beautiful villages in China.

The rural toilet for the methane tank popularized in rural areas improves the sanitary effect of the rural toilet to a certain extent, but the methane tank is generally built under a livestock breeding barn of farmers, and the methane toilet is required to be built on the methane tank, so that the rural toilet for the farmers is arranged in the livestock barn or is close to the livestock barn, the peripheral sanitary environment is still not improved, pollutants cannot be fully removed, and great potential safety hazards exist.

The Chinese utility model patent (application No. 200720127031.9, granted bulletin date 2008, 9/3) discloses an anaerobic-aerobic treatment system device for rural domestic sewage, which provides an anaerobic-aerobic treatment system device capable of treating mixed sewage (grey water) in a water-washed toilet, a kitchen and a bathroom of a peasant household. However, because a large amount of solid pollutants are contained in kitchens and toilets, the treatment difficulty of the sewage treatment system can be greatly improved after the pollutants enter the sewage treatment system, and the problems of how to reduce the pollutants entering the sewage treatment system and further recycling the generated sediments and sludge in the sewage treatment system and the like are urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims at providing a rural domestic sewage treatment system can produce sewage with rural lavatory, kitchen guarding and carry out innoxious, reduction treatment to carry out resourceful treatment to the mud that produces in its processing procedure, in order to be applicable to the domestic sewage treatment system of rural distributed emission.

In order to achieve the above purpose, the utility model adopts the technical proposal that: a rural domestic sewage treatment system comprises a separator, a liquid conveying pipe, a water collecting well, a separation chamber, an aerobic tank, an underflow type wetland system, a solid-liquid mixing conveying pipe and a solid reduction device;

the separator separates the kitchen waste into homogeneous solid and kitchen waste liquid;

the liquid conveying pipe conveys kitchen waste liquid, washing waste liquid and toilet flushing waste liquid to the water collecting well for homogenization treatment, a bottom through hole is formed in the bottom of the water collecting well, and mixed waste liquid in the water collecting well enters the separation chamber through the bottom through hole; a filter material is arranged in the separation chamber, the bottom of the separation chamber is a conical bottom, and mixed waste liquid in the separation chamber is intercepted by the filter material and then overflows into the aerobic tank through an overflow port arranged at the upper part of the separation chamber; the effluent of the aerobic tank enters the subsurface wetland system through a through hole arranged at the bottom of the aerobic tank;

the solid-liquid mixture formed by the separation of the separator and the solid-liquid mixture intercepted by the separation chamber in the conical bottom is conveyed to the solid reduction device through the solid-liquid mixing conveying pipe.

Preferably, the separator is provided with a crusher and a filtering tank, the filtering tank adopts negative pressure filtering, kitchen garbage generated in a household kitchen is crushed by the crusher and then is subjected to negative pressure filtering by the filtering tank to be separated into the homogeneous solid and the kitchen waste liquid.

Preferably, after the household toilet waste water is treated by the hair separation device, the generated toilet waste liquid enters the liquid conveying pipe.

Preferably, the separation chamber is an anaerobic environment; the filter material is arranged on the upper part of the bottom through hole, and the combined filler is arranged on the upper part of the filter material.

Preferably, the top of the aerobic tank and the edge of the lower part of the tank body are provided with vent holes, and the bottom of the aerobic tank is provided with an aeration head so as to carry out aeration by adopting a combination mode of natural ventilation and mechanical aeration.

Preferably, the solid-liquid mixing conveying pipe is provided with a disinfection device.

Preferably, the disinfection device adopts chlorine dioxide disinfection and/or ozone disinfection.

Preferably, the subsurface flow wetland system further removes nitrogen and phosphorus in the waste liquid to ensure the water quality requirement of the effluent; and the artificial wetland in the subsurface flow wetland system is planted with aquatic plants with landscape value.

Preferably, the solid reduction device adopts an aerobic composting system and/or a sludge carbonization device to perform corresponding aerobic composting treatment and/or carbonization treatment on the solids conveyed by the solid-liquid mixing conveying pipe.

Preferably, the filter material adopts a carbonized product generated by the solid reduction device as a raw material; the filtering material is replaced at regular time, and the used filtering material is sent to a solid reduction device for reduction treatment.

The beneficial effects of the utility model reside in that: adopt rural domestic sewage treatment system, can produce sewage with rural lavatory, kitchen guarding and carry out innoxious, reduction treatment to carry out resourceful treatment and utilization to the mud that produces in its processing procedure. The utility model carries out preliminary crushing and separation on the kitchen waste, the washing waste water and the toilet flushing waste water, directly leads the homogenized solid matter into the solid reduction device for harmless and reduction treatment, carries out resource treatment on the sludge generated in the treatment process, and is beneficial to the resource recycling of the solid waste; meanwhile, the rural domestic sewage treatment system of the utility model carries out preliminary crushing and separation before the wastewater enters the sewage treatment system, thereby greatly reducing the concentration of the water inlet pollutants of the sewage treatment system, improving the treatment efficiency of the sewage treatment system and reducing the sewage treatment cost; in addition, aquatic plants with landscape value can be planted in the artificial wetland in the subsurface flow type wetland system, landscape garden type artificial wetland is created, and the overall landscape effect of the sewage treatment system is improved.

Drawings

Figure 1 is a schematic view of the three-dimensional structure of the rural domestic sewage treatment system of the utility model.

In the figure: 1-household, 2-separator, 3-liquid conveying pipe, 4-water collecting well, 5-bottom through hole, 6-separating chamber, 7-filtering material, 8-conical bottom, 9-aerobic tank, 10-subsurface wetland system, 11-solid-liquid mixing conveying pipe and 12-solid reduction device.

Detailed Description

The technical solutions in the embodiments of the present invention will be further clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, so that those skilled in the art can implement the embodiments with reference to the description text. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1, the rural domestic sewage treatment system provided by the present embodiment comprises a separator 2, a liquid delivery pipe 3, a water collecting well 4, a separation chamber 6, an aerobic tank 9, a subsurface wetland system 10, a solid-liquid mixing delivery pipe 11 and a solid reduction device 12;

the waste generated in the household 1 is mainly divided into kitchen waste, washing waste liquid and toilet flushing waste liquid, the kitchen waste is treated by a separator 2 arranged in the household 1, a crusher and a filter tank are arranged in the separator 2, the filter tank adopts negative pressure filtration, the kitchen waste such as leftovers and leftovers generated in the household kitchen is crushed by the crusher and then is separated into homogeneous solid and kitchen waste liquid after being subjected to the negative pressure filtration by the filter tank; treating the washing wastewater by a hair separator to generate washing wastewater; the waste flushing liquid generated by urine, excrement and the like in the household toilet.

Kitchen waste liquid, washing waste liquid and toilet flushing waste liquid are conveyed to a water collecting well 4 through a liquid conveying pipe 3 for homogenization treatment, a bottom through hole 5 is formed in the bottom of the water collecting well 4, mixed waste liquid in the water collecting well 4 enters a separating chamber 6 through the bottom through hole 5, a filter material 7 is arranged inside the separating chamber 6, the filter material 7 is arranged above the bottom through hole 5, and the bottom of the separating chamber 6 is a conical bottom 8; solid particles in the up-flow mixed waste liquid in the separation chamber 6 are intercepted and settled by the filter material 7 in the separation chamber 6, then the solid particles settle to the conical bottom 8, the waste liquid separated by the filter material 7 enters the upper part of the separation chamber 6, overflows into an aerobic pool 9 arranged behind the separation chamber 6 through an overflow port arranged at the upper part of the separation chamber 6, and effluent of the aerobic pool 9 enters into a subsurface wetland system 10 through a through hole arranged at the bottom of the aerobic pool 9.

The homogeneous solid separated by the separator 2 is conveyed to a solid reducing device 12 through a solid-liquid mixing conveying pipe 11, the solid-liquid mixing conveying pipe 11 is connected with a conical bottom 8 at the bottom of the separation chamber 6, and the solid-liquid mixture separated in the separation chamber 6 is conveyed to the solid reducing device 12.

The upper part of the filter material 7 is provided with a combined filler, the central rope of the combined filler is a plastic rope, the periphery of the combined filler is provided with polyester yarns, and the filling rate of the combined filler on the upper part of the separation chamber 6 is 40-60%; the separation chamber 6 is built into an anaerobic environment, the retention time of the waste liquid in the separation chamber 6 is 3-5 d, and the waste liquid after anaerobic separation in the separation chamber 6 enters the aerobic tank 9 through a through hole at the upper part of the separation chamber 6; the aerobic tank 9 adopts a combination mode of natural ventilation and mechanical aeration for aeration, the top of the aerobic tank 9 and the edge of the lower part of the tank body are provided with vent holes, the bottom of the aerobic tank is provided with an aeration head, and the waste liquid treated by the aerobic tank 9 is introduced into the subsurface wetland system 10; the subsurface flow type wetland system 10 further removes impurities such as nitrogen, phosphorus and the like in the waste liquid so as to ensure the water quality requirement of the effluent, and the artificial wetland in the subsurface flow type wetland system 10 can be planted with aquatic plants with landscape value to build landscape garden type artificial wetland.

The conical bottom 8 needs to be cleaned regularly, solid particle slag intercepted by the separation chamber 6 is conveyed to a solid reduction device 12 through a solid-liquid mixing conveying pipe 11 for reduction treatment, the solid-liquid mixing conveying pipe 11 is provided with a disinfection device, and harmful bacteria in solid waste are killed by adopting chlorine dioxide and ozone for disinfection.

The solid reduction device 12 adopts an aerobic composting system and/or a sludge carbonization device to carry out aerobic composting treatment on 60-80% of solid, and the treated compost product is suitable for farmlands; carbonizing 20-40% of solids to prepare a filter material 7; the filtering material 7 is replaced at regular time, and the used filtering material 7 is sent to a solid reducing device 12 for reducing treatment.

Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and the embodiments, and it can be applied to various fields suitable for the present invention, and to those skilled in the art, it is easy to implement the embodiments of the present invention additionally modified according to the technical solution of the present invention, and also belong to the technical innovative range of the present invention. Therefore, the invention is not to be limited to the specific details and embodiments shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.

Claims (10)

1. A rural domestic sewage treatment system comprises a separator (2), a liquid conveying pipe (3), a water collecting well (4), a separation chamber (6), an aerobic pool (9), a subsurface flow wetland system (10), a solid-liquid mixing conveying pipe (11) and a solid reduction device (12); the method is characterized in that:

the separator (2) separates the kitchen waste into homogeneous solid and kitchen waste liquid;

the liquid conveying pipe (3) conveys kitchen waste liquid, washing waste liquid and toilet flushing waste liquid to the water collecting well (4) for homogenization treatment, a bottom through hole (5) is formed in the bottom of the water collecting well (4), and mixed waste liquid in the water collecting well (4) enters the separation chamber (6) through the bottom through hole (5); a filter material (7) is arranged in the separation chamber (6), the bottom of the separation chamber (6) is a conical bottom (8), and mixed waste liquid in the separation chamber (6) is intercepted by the filter material (7) and then overflows into the aerobic tank (9) through an overflow port arranged at the upper part of the separation chamber (6); the effluent of the aerobic tank (9) enters the subsurface wetland system (10) through a through hole arranged at the bottom of the aerobic tank (9);

the homogeneous solid formed by the separation of the separator (2), the solid-liquid mixture trapped in the conical bottom (8) of the separation chamber (6) are conveyed to the solid reduction device (12) through the solid-liquid mixing conveying pipe (11).

2. The rural domestic sewage treatment system of claim 1, wherein: the separator (2) is provided with a crusher and a filtering tank, the filtering tank adopts negative pressure filtering, kitchen garbage generated in a household kitchen is crushed by the crusher and then is separated into the homogeneous solid and the kitchen waste liquid after being subjected to negative pressure filtering by the filtering tank.

3. The rural domestic sewage treatment system of claim 2, wherein: after the household washing wastewater is treated by the hair separation device, the generated washing waste liquid enters the liquid conveying pipe (3).

4. The rural domestic sewage treatment system of claim 3, wherein: the separation chamber (6) is in an anaerobic environment; the filter material (7) is arranged on the upper portion of the bottom through hole (5), and the combined filler is arranged on the upper portion of the filter material (7).

5. The rural domestic sewage treatment system of claim 4, wherein: the aeration device is characterized in that ventilation holes are formed in the top of the aerobic tank (9) and the edge of the lower portion of the tank body, and an aeration head is arranged at the bottom of the aerobic tank (9) so as to perform aeration in a mode of combining natural ventilation with mechanical aeration.

6. The rural domestic sewage treatment system according to any one of claims 1-5, wherein: the solid-liquid mixing conveying pipe (11) is provided with a disinfection device.

7. The rural domestic sewage treatment system of claim 6, wherein: the disinfection device adopts chlorine dioxide disinfection and/or ozone disinfection.

8. The rural domestic sewage treatment system of claim 7, wherein: the subsurface flow wetland system (10) further removes nitrogen and phosphorus in the waste liquid to ensure the effluent quality requirement; the artificial wetland in the subsurface flow wetland system (10) is planted with aquatic plants with landscape value.

9. The rural domestic sewage treatment system of claim 7, wherein: the solid reduction device (12) adopts an aerobic composting system and/or a sludge carbonization device to carry out corresponding aerobic composting treatment and/or carbonization treatment on the solid conveyed by the solid-liquid mixing conveying pipe (11).

10. The rural domestic sewage treatment system of claim 9, wherein: the filter material (7) adopts a carbonized product generated by the solid reduction device (12) as a raw material; the filter material (7) is replaced at regular time, and the used filter material (7) is sent to a solid reduction device (12) for reduction treatment.

Images