CN216837558U

CN216837558U - Semi-buried type village and town domestic sewage biological advanced treatment device

Info

Publication number: CN216837558U
Application number: CN202220146852.1U
Authority: CN
Inventors: 马志刚; 李明; 王静; 沈思彤; 张婧懿
Original assignee: Yangtze River Ecology Hubei Technology Development Co ltd
Current assignee: Yangtze River Ecology Hubei Technology Development Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-28
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a half bury biological advanced treatment unit of town domestic sewage, it relates to sewage treatment technical field. Including a set of water inlet system, a set of water outlet system, a set of aeration systems and a set of filtration system, the inlet tube is connected the water inlet system respectively through four first electric butterfly valves, the water outlet system, aeration systems and filtration system's upper portion, the water inlet system, the water outlet system, aeration systems and filtration system bottom are provided with the aeration pipe, the aeration pipe below is provided with the outlet pipe, the below of inlet tube is provided with the back flush outlet pipe, the inlet tube still is connected with the coagulating basin, the air-blower of aeration union coupling backwash fan room, back flush outlet pipe is connected to and removes thick grid canal, the outlet pipe is connected to the disinfection pond. The utility model has the advantages of reasonable design, can remove pollutants such as SS in the sewage, play advanced treatment's filter action.

Description

Semi-buried type village and town domestic sewage biological advanced treatment device

Technical Field

The utility model relates to a sewage treatment technical field, concretely relates to bury biological advanced treatment unit of rural domestic sewage partly.

Background

With the improvement of the requirements of people on the quality of living environment and the increase of the ecological protection of water environment by the national environmental protection department, the domestic sewage treatment plants in villages and towns generally face the requirement of improving the treatment discharge standard so as to further reduce river-entering pollutants and ensure the quality of the water environment. Aiming at the improvement and reconstruction requirements of sewage treatment plants in villages and towns, a biological advanced treatment technical device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a partly bury biological advanced treatment unit of formula village and town domestic sewage, structural design is reasonable, can get rid of pollutants such as SS in the sewage, plays advanced treatment's filtering action to exist on the prior art.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a bury formula rural area town domestic sewage biological advanced treatment unit, including a set of system of intaking, a set of water outlet system, a set of aeration systems and a set of filtration system, the inlet tube is connected the system of intaking respectively through four electric butterfly valves, water outlet system, aeration systems and filtration system's upper portion, the system of intaking, water outlet system, aeration systems and filtration system bottom are provided with the aeration pipe, the aeration pipe below is provided with the outlet pipe, the below of inlet tube is provided with the back flush outlet pipe, the inlet tube still is connected with the coagulating basin, the air-blower of aeration union coupling backwash fan room, back flush outlet pipe is connected to and goes thick grid canal, outlet pipe connection is to the disinfection pond.

Preferably, the water inlet system comprises a group of water inlet systems formed by four same units, the water outlet system comprises a group of water outlet systems formed by four same units, the aeration system comprises a group of aeration systems formed by four same units, and the filter system comprises a group of filter systems formed by four same units.

Preferably, the water inlet pipe, the aeration pipe, the water outlet pipe and the back washing water outlet pipe are all distributed in axial symmetry.

Preferably, the filtering system is arranged in the filtering tank, and the filtering material in the filtering tank is provided with gravel, anthracite and quartz sand from bottom to top.

The utility model discloses following beneficial effect has:

firstly, the biological carrier in the device adopts granular filling materials, such as ceramsite, coke, quartz sand, active carbon and the like;

secondly, the filter has a filtering function, and meanwhile, soluble organic matters in water can be further removed, so that the defect of insufficient treatment effect of a biochemical system is overcome;

thirdly, the device has higher volume load and higher activity of the biological membrane;

and fourthly, a secondary sedimentation tank is not needed to be arranged behind the treatment unit of the device.

Removing the trapped precipitate in the device periodically by backwashing, updating the biomembrane of the device and keeping the continuous purification function of the device.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a plan view of the present invention;

FIG. 2 is a sectional view taken along line 1-1 of FIG. 1;

FIG. 3 is a sectional view taken along line 2-2 of FIG. 1;

FIG. 4 is a cross-sectional view taken along line 3-3 of FIG. 1;

fig. 5 is a schematic diagram of the filter material of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 5, the following technical solutions are adopted in the present embodiment: the utility model provides a bury biological advanced treatment unit of formula rural area town domestic sewage partly, including a set of water inlet system A, a set of effluent system B, a set of aeration system C and a set of filtration system D, inlet tube 1 connects water inlet system A respectively through four electric butterfly valves 2, effluent system B, the upper portion of aeration system C and filtration system D, water inlet system A, effluent system B, aeration system C and filtration system D bottom are provided with aeration pipe 3, aeration pipe 3 below is provided with outlet pipe 4, the below of inlet tube 1 is provided with back flush outlet pipe 5, inlet tube 1 still is connected with the coagulating basin, aeration pipe 3 connects the air-blower in backwash fan room, back flush outlet pipe 5 is connected to and goes thick grid canal, outlet pipe 4 is connected to the disinfection pond.

It is worth noting that the water inlet system A is a group of water inlet systems formed by four same units, the water outlet system B is a group of water outlet systems formed by four same units, the aeration system C is a group of aeration systems formed by four same units, and the filter system D is a group of filter systems formed by four same units.

It is worth noting that the water inlet pipe 1, the aeration pipe 3, the water outlet pipe 4 and the back washing water outlet pipe 5 are distributed in axial symmetry.

In addition, the filtering system D is arranged in the filtering tank, and the filtering material in the filtering tank is provided with gravels 6, anthracite 7 and quartz sand 8 from bottom to top.

The biological advanced treatment device of the specific embodiment adopts the technology of filtration and biological contact oxidation, is suitable for advanced treatment after a biochemical treatment system of a sewage treatment plant in villages and towns, and mainly has the main functions of further removing partial pollutants in sewage and reducing suspended matters and organic pollutants. The biological advanced treatment device is generally used for removing pollutants such as SS in sewage and has a filtering function of advanced treatment. When the BOD of the effluent of the filter tank does not reach the standard, the air blower is started, aeration is carried out through the perforated aeration pipe at the bottom of the filter material of the filter tank, the biological oxidation effect is exerted, pollutants such as BOD, COD and the like in the sewage are further removed, and the effluent is ensured to meet the discharge requirement.

The hydraulic retention time of the biological advanced treatment device is about 0.17h generally, the filtration speed is about 5.8m/h, and the biological advanced treatment device is generally composed of four same units to realize the functions of continuously removing pollutants in water and backwashing and purifying. The biological filler in the device can provide a medium for inoculation, film formation, growth and propagation of microorganisms, and has the filtering function of adsorbing and intercepting sewage

The working principle of the specific embodiment is as follows: the device integrates the advantages of a sewage treatment contact oxidation method and a rapid filter tank, and has the characteristics of filtering and intercepting suspended matters, biological contact oxidation purification, periodic back washing and the like. The device is filled with a plurality of layers of granular filter materials, the bottom of the device is provided with an aeration device, and the basic purification principle is as follows: under general conditions, when a biochemical system has a good operation effect, system effluent enters a device, and pollutants in water are intercepted only through multiple layers of filter materials in the device, so that the water quality purification target can be achieved. Secondly, when the operation effect of a front end biochemical system of a sewage plant in villages and towns is not ideal or the requirement on the discharge standard is higher, after the sewage enters the device, a high-activity biological membrane is formed on the surface of the filter material, and the device forms biological contact oxidation (integrating anoxic, aerobic and anaerobic biological membrane environments) degradation capability to further purify the sewage by cutting airflow generated by bottom aeration. When sewage passes through the device, the internal filter material is in a compacted state, the loss of the water head of the device is increased after the device operates for a certain time, and the device needs to be backwashed to release trapped pollutants and update a biological membrane of the device so as to ensure that the purification effect of the device is continuously and effectively.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A semi-buried type village and town domestic sewage biological advanced treatment device is characterized by comprising a group of water inlet systems (A), a group of water outlet systems (B), a group of aeration systems (C) and a group of filter systems (D), wherein a water inlet pipe (1) is respectively connected with the upper parts of the water inlet systems (A), the water outlet systems (B), the aeration systems (C) and the filter systems (D) through four first electric butterfly valves (2), aeration pipes (3) are arranged at the bottoms of the water inlet systems (A), the water outlet systems (B), the aeration systems (C) and the filter systems (D), a water outlet pipe (4) is arranged below the aeration pipes (3), a backwashing water outlet pipe (5) is arranged below the water inlet pipe (1), the water inlet pipe (1) is also connected with a coagulation tank, the aeration pipes (3) are connected with a blower of a backwashing fan room, and the backwashing water outlet pipe (5) is connected with a coarse-removing grid channel, the water outlet pipe (4) is connected to the disinfection tank.

2. The semi-buried biological advanced treatment device for domestic sewage in villages and towns as claimed in claim 1, wherein said water inlet system (A) comprises four identical units to form a group of water inlet system, said water outlet system (B) comprises four identical units to form a group of water outlet system, said aeration system (C) comprises four identical units to form a group of aeration system, and said filter system (D) comprises four identical units to form a group of filter system.

3. The semi-buried type biological advanced treatment device for the domestic sewage in the villages and the towns as claimed in claim 1, wherein the water inlet pipe (1), the aeration pipe (3), the water outlet pipe (4) and the back flush water outlet pipe (5) are all distributed in axial symmetry.

4. The semi-buried type biological advanced treatment device for the domestic sewage of the villages and towns as claimed in claim 1, wherein the filter system (D) is arranged in a filter tank, and gravel (6), anthracite (7) and quartz sand (8) are arranged on a filter material in the filter tank from bottom to top.