CN215798682U

CN215798682U - Integrated equipment for treating rural domestic sewage in coastal area

Info

Publication number: CN215798682U
Application number: CN202120563184.8U
Authority: CN
Inventors: 张方方; 李小鹏; 刘骁智; 张波
Original assignee: Qingdao Water Originwater Technology Development Co ltd
Current assignee: Qingdao Water Originwater Technology Development Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2022-02-11
Anticipated expiration: 2031-03-12

Abstract

The utility model belongs to the technical field of water treatment, and particularly relates to a coastal rural domestic sewage treatment integrated device. The method has the advantages of small equipment occupation area, high construction speed, small sludge yield and simple management equipment, and is suitable for the requirements of higher total nitrogen content of coastal rural domestic sewage and difficult standard reaching of TN (twisted nematic) effluent. The water inlet of the coastal rural domestic sewage treatment integrated equipment is positioned at the bottom of the equipment, the water inlet is connected with the water inlet channel, the upper part of the water inlet channel enters the basket lifting grid through a pipeline, the suspended filler is arranged in the anoxic tank, the paddle type stirrer is arranged to keep the filler in a suspended state, the suspended filler can be attached to and grow a large amount of denitrifying bacteria, the suspended filler is arranged in the aerobic tank to reduce the sludge yield, the MBR membrane tank is arranged, and the MBR membrane filter is arranged in the tank.

Description

Integrated equipment for treating rural domestic sewage in coastal area

Technical Field

The utility model relates to sewage treatment equipment, in particular to coastal rural domestic sewage treatment integrated equipment.

Background

The integrated equipment is simple in construction, small in occupied area, rapid and wide in construction, and can be widely applied to the fields of domestic sewage, industrial sewage, reclaimed water recycling, emergency treatment of river pollution and the like. According to the requirement of the placement position, the device can be designed to be buried or overground; the material may be carbon steel, glass fiber reinforced plastic, stainless steel, etc. The domestic sewage integrated equipment is more and more applied to town community sewage treatment, school sewage treatment and rural sewage treatment due to small occupied area, convenient transportation and simple construction and operation. The living mode with villages and towns as the main form in China still accounts for a large proportion. However, due to the limitation of rural geographical conditions, a centralized collecting pipe network is not provided for rural sewage discharge at present, villages are distributed in a large number, sewage collection becomes a main difficulty and a troublesome point of rural sewage treatment, and the problem of difficulty in rural sewage treatment and collection due to the application of rural sewage treatment integrated equipment is well solved. Therefore, the research on the rural sewage treatment integrated equipment is more and more focused.

At present, the rural sewage treatment integrated equipment has many different forms of application, but the existing integrated equipment has some problems and defects in the application process, and the problems are as follows: (1) the rural sewage quality is complicated, and the pretreatment link is weak, thereby leading to the too high SS of intaking, influence treatment effect (2) because the design is unreasonable, the water distribution of intaking is uneven, debugging difficulty (3) mud output is high, and sludge treatment is inconvenient, arranges mud with high costs. (4) When the quality of the inlet water is poor, the volume of the equipment is large, the occupied area is large (5), and the deviation of the quality and quantity of the inlet water from the designed value is large, the sludge expands and the treatment effect is poor. (6) The total nitrogen content of the domestic sewage in the coastal rural areas is higher, and TN effluent is difficult to reach the standard.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to solve the technical problems of providing equipment which can adapt to the existing rural sewage treatment and collection difficulty and management difficulty, reducing the professional requirements on operating equipment by field managers through reasonable selection and configuration and full-automatic control, reducing the output of residual sludge, reducing the sludge treatment cost and reducing the equipment maintenance workload.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a rural domestic sewage treatment integration equipment of coastal, includes the equipment main part, the equipment main part includes water inlet, inlet channel oxygen deficiency pond, anaerobism pond, good oxygen pond, MBR membrane cisterna, equipment room, equipment produce mouth of a river, equipment evacuation mouth. The water inlet is connected with a water inlet channel, the water inlet channel is connected with an anoxic tank, the anoxic tank is connected with an anaerobic tank, the anaerobic tank is connected with an aerobic tank, the aerobic tank is connected with an MBR membrane tank, a membrane group device is arranged in the membrane tank, and the produced water of the membrane group device is connected with an ultraviolet sterilizer through a water production pump; a basket grid water inlet is designed at the top of the anoxic tank, water inlet holes are formed in the anaerobic tank and the anoxic tank, and an intercepting screen is arranged at the water inlet hole; a water inlet hole is formed at the joint of the aerobic tank and the anaerobic tank, and an intercepting screen is arranged at the water inlet hole; a water inlet hole is formed at the joint of the MBR tank and the aerobic tank, and an intercepting screen is arranged at the water inlet hole; a water inlet lifting basket grid is arranged at the top of the anoxic tank; the anoxic pond is provided with a paddle type stirrer; a submersible stirrer is arranged in the anaerobic tank; the bottom end of the aerobic tank is provided with a micropore aerator which is connected with an aeration air inlet pipeline of the aerobic tank; the MBR membrane tank membrane group device is connected with an ultraviolet sterilizer through a self-priming pump; the water outlet of the ultraviolet sterilizer is connected with a water outlet of equipment; the MBR membrane cisterna is also internally provided with a backflow sludge port, and one side of the equipment main body is provided with a crawling ladder. The equipment main body is connected with the PLC control cabinet. The integrated equipment for the coastal rural domestic sewage has the advantages that: 1. the water inlet of the coastal rural domestic sewage treatment integrated equipment is positioned at the bottom of the equipment, the water inlet is connected with the water inlet channel, the upper part of the water inlet channel enters the basket grid through the pipeline, and the water distribution mode is favorable for uniformly distributing water and improving the subsequent biochemical treatment effect. 2. According to the integrated equipment for treating the rural domestic sewage in the coastal region, the suspended filler is arranged in the anoxic tank, the paddle type stirrer is arranged to keep the filler in a suspended state, and the suspended filler can be attached to and grow a large number of denitrifying bacteria, so that the denitrifying load is increased, and the total nitrogen removal efficiency of the equipment is improved. 3. According to the integrated equipment for treating the rural domestic sewage in the coastal area, the suspended filler is arranged in the aerobic tank, so that the filler load is higher, the sewage nitrification and organic matter removal capacity is improved, the retention time of sewage in the equipment is reduced, the size of the equipment is reduced, and the occupied area is saved; the biological treatment method of the suspended filler can reduce the sludge yield and reduce the sludge disposal cost. 4. The integrated equipment for treating the rural domestic sewage in the coastal area is provided with the MBR membrane tank, the MBR membrane filter is arranged in the tank, and the produced water passes through the membrane filaments with the micro-filtration pore diameter through the suction pump, so that the sludge bulking problem is solved, and compared with the effluent of a sedimentation tank in the traditional sludge method, the SS value of the effluent is greatly reduced. The membrane group device is designed to be movable, the membrane group device can be lifted out without emptying the membrane pool, and other membrane group devices can also continue to produce water.

Drawings

FIG. 1 is a plan view of the present invention

FIG. 2 is a schematic view of the internal plan of the present invention

FIG. 3 is a view from the A-A direction of the present invention

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. As shown in figures 1, 2 and 3, the integrated equipment for treating the rural domestic sewage on the coast is characterized in that: the device comprises a device main body (10), wherein the device main body (10) comprises a water inlet (1), a water inlet channel (2), an anoxic tank (3), an anaerobic tank (4), an aerobic tank (5), an MBR membrane tank (6), a device room (7), a device water production port (8) and a device emptying port (9). The water inlet (1) is connected with the water inlet channel (2), the water inlet channel (2) is connected with the anoxic tank (3), the anoxic tank (3) is connected with the anaerobic tank (4), the anaerobic tank (4) is connected with the aerobic tank (5), the aerobic tank (5) is connected with the MBR membrane tank (6), a membrane group device (17) is placed in the membrane tank (6), and water produced by the membrane group device (17) is connected with the ultraviolet sterilizer (18) through a water production pump; a basket grid (9) water inlet is designed at the top of the anoxic tank (3), water inlets are formed in the anaerobic tank (4) and the anoxic tank (3), and an intercepting screen (13) is arranged at the water inlet; a water inlet hole is formed at the joint of the aerobic tank (5) and the anaerobic tank (4), and an intercepting screen (13) is arranged at the water inlet hole; a water inlet hole is formed at the joint of the MBR tank (6) and the aerobic tank (5), and an intercepting screen (13) is arranged at the water inlet hole; the top of the anoxic pond (3) is provided with a water inlet basket grid (12); the anoxic pond (3) is provided with a paddle type stirrer (14); a submersible stirrer (15) is arranged in the anaerobic tank; a microporous aerator (16) is arranged at the bottom end of the aerobic tank (5), and the microporous aerator (16) is connected with an aeration air inlet pipeline (20) of the aerobic tank; the MBR membrane tank membrane group device (17) is connected with an ultraviolet sterilizer (18) through a self-priming pump; the water outlet of the ultraviolet sterilizer (18) is connected with a water producing port (8) of the equipment; the MBR membrane tank (6) is also internally provided with a return sludge port (19), and one side of the equipment main body (10) is provided with a ladder stand (21). The device body 10 is connected to a PLC control cabinet 22.

In the first embodiment, by describing the manner of the integrated device in detail, as shown in fig. 1, 2 and 3, the present embodiment is described in detail with a set of integrated domestic sewage treatment device with a treatment capacity of 100m 3/d, and the size of the device is L B H7.0H 2.5 m 2.6 m. The inside of the device is made of glass fiber reinforced plastic, the outside of the device is made of carbon steel, the glass fiber reinforced plastic is tangent to the carbon steel, and the carbon steel is subjected to rust removal and corrosion prevention treatment. The water inlet 1 is connected with the equipment main body 10, and is conveniently connected with incoming water by adopting a pipeline flange of DN 80; the water inlet firstly passes through the water inlet distribution channel 2, the water inlet distribution channel 2 is 2500 x 200 x 2500mm, the top of the channel is sealed, a communicating pipe 11 is arranged, the pipe diameter of the communicating pipe is DN150, the outlet water of the communicating pipe enters the anoxic tank 3 through the basket-lifting grating 12, and the size of the basket-lifting grating is 400 x 400 mm. A paddle type stirrer is arranged in the anoxic tank 3, the power of a stirrer motor is 0.37KW, and the diameter of a paddle is 200 mm; the anoxic pond 3 is filled with suspended filler with the filling rate of 10 percent. A submersible stirrer is designed and installed in the anaerobic tank 4; the power of the motor of the stirrer is 0.37KW, and the diameter of the impeller is 220 mm. The bottom of the aerobic tank 5 is provided with a phi 250 microporous aerator 16 with a total of 20 sets, and is matched with a perforated aeration pipe, the tank 5 is filled with suspended filler with the filling rate of 50 percent, and the blast aeration pipe is connected with an air blower through an aeration air inlet pipe 20 for air inlet. The effluent enters the ultraviolet disinfector 18 through a water outlet pipe of the MBR membrane pool membrane module device and a self-priming pump, the effluent of the ultraviolet disinfector is connected with a water outlet 8 of the device, and the size of the water outlet is DN 65. The connecting holes of the anoxic tank and the anaerobic tank, the anaerobic tank and the aerobic tank, and the aerobic tank and the MBR membrane tank are all provided with intercepting grids, so that the loss of suspended fillers is avoided. A sludge return port 19 is arranged between the MBR membrane tank and the anoxic tank, and the MBR membrane tank returns through the sludge return port 19; the water discharged from the ultraviolet sterilizer 18 is discharged through the water outlet 8 after reaching the standard.

The inlet water flow variation coefficient of the embodiment is 1.2-1.4, and the anoxic section, the anaerobic section, the aerobic section and the MBR membrane tank are arranged, so that organic matters, ammonia nitrogen, T, TP and SS in water can be comprehensively and effectively removed. The anoxic section is filled with the suspended filler, so that the denitrification efficiency can be greatly improved, and the TN removal rate can be improved. The aerobic section is filled with suspended filler, the filler load can reach 4.0kg CODcr/m 3. d, the retention time of sewage is effectively reduced, and the tank capacity is reduced. Set up the MBR membrane cisterna, the mud-water separation effect is better, makes out water and can stabilize up to standard.

The domestic sewage is introduced into the equipment for testing according to the flow of 2t/h, the water quality of the domestic sewage in and out of the equipment is compared before and after, and the test result is as follows: after the conventional domestic sewage enters the equipment, the conventional domestic sewage stays for 10 hours and reaches the first-class A standard. Wherein, the CODcr removal rate reaches 90%, the BOD5 removal rate reaches 95.0%, the SS removal rate reaches 99.0%, the N-NH3 removal rate reaches 95.0%, the TN removal rate reaches more than 80%, and the effluent stably reaches the standard.

The present invention is described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments. Those skilled in the art can make various modifications or alterations to the present invention without departing from the technical idea of the present invention, and such modifications or alterations also fall within the protective scope of the present invention.

Claims

1. A coastal rural domestic sewage treatment integrated equipment is characterized in that: the device comprises a device main body (10), wherein the device main body (10) comprises a water inlet (1), a water inlet channel (2), an anoxic tank (3), an anaerobic tank (4), an aerobic tank (5), an MBR membrane tank (6), a device room (7), a device water production port (8) and a device emptying port (9), the water inlet channel (1) is connected with the water inlet channel (2), the water inlet channel (2) is connected with the anoxic tank (3), the anoxic tank (3) is connected with the anaerobic tank (4), the anaerobic tank (4) is connected with the aerobic tank (5), the aerobic tank (5) is connected with the MBR membrane tank (6), a membrane group device (17) is placed in the MBR membrane tank (6), and water produced by the membrane group device (17) is connected with an ultraviolet sterilizer (18) through a water production pump; a water inlet basket grid (12) is arranged at the top of the anoxic tank (3), water inlet holes are formed in the anaerobic tank (4) and the anoxic tank (3), and an intercepting screen (13) is arranged at the water inlet holes; a water inlet hole is formed at the joint of the aerobic tank (5) and the anaerobic tank (4), and an intercepting screen (13) is arranged at the water inlet hole; a water inlet hole is formed at the joint of the MBR membrane tank (6) and the aerobic tank (5), and an intercepting screen (13) is arranged at the water inlet hole; the top of the anoxic pond (3) is provided with a water inlet basket grid (12); the anoxic pond (3) is provided with a paddle type stirrer (14); a submersible stirrer (15) is arranged in the anaerobic tank; a microporous aerator (16) is arranged at the bottom end of the aerobic tank (5), and the microporous aerator (16) is connected with an aeration air inlet pipeline (20) of the aerobic tank; the membrane group device (17) is connected with an ultraviolet sterilizer (18) through a self-priming pump; the ultraviolet sterilizer (18) is connected with the equipment water producing port (8); the MBR membrane tank (6) is internally provided with a return sludge port (19), one side of the equipment main body (10) is provided with a ladder stand (21), and the equipment main body (10) is connected with a PLC control cabinet (22).

2. The integrated domestic sewage treatment apparatus according to claim 1, wherein: the domestic sewage treatment integrated equipment further comprises a pipeline (11), and the water inlet channel (2) is connected with the water inlet lifting basket grid (12) through the pipeline (11).

3. The integrated domestic sewage treatment apparatus according to claim 2, wherein: the anaerobic tank (3) is internally provided with a suspension filler, and the paddle type stirrer (14) is arranged at the lower part of the anaerobic tank (3).

4. The integrated domestic sewage treatment apparatus according to claim 3, wherein: and suspended fillers are filled in the aerobic tank (5).

5. The integrated domestic sewage treatment apparatus according to claim 4, wherein: the membrane group device (17) is fixed on a vertically arranged guide rail and can slide up and down along the guide rail.