CN211284086U

CN211284086U - Eutrophic sewage treatment system

Info

Publication number: CN211284086U
Application number: CN202021349665.0U
Authority: CN
Inventors: 魏嘉宾
Original assignee: Zhongxiang Environmental Protection Co ltd
Current assignee: Zhongxiang Environmental Protection Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-08-18
Anticipated expiration: 2030-07-10

Abstract

The utility model discloses an eutrophic sewage treatment system, which comprises a mud-water separation device, wherein the water outlet end of the mud-water separation device is sequentially connected with an anaerobic tank, a first moving bed biofilm reactor, a transition frame and a second moving bed biofilm reactor; the volume of the first moving bed biofilm reactor is 1/3-1/2 of that of the second moving bed biofilm reactor; the transition frame is erected between the first moving bed biofilm reactor and the second moving bed biofilm reactor and is connected with the first moving bed biofilm reactor and the second moving bed biofilm reactor, the transition frame is of a U-shaped water passing groove structure, an aerator pipe is arranged at the bottom of the transition frame, a water passing plate is further arranged below the water passing depth of the transition frame, the water passing plate is a hollow structure plate, and a filler ball is arranged on the water passing plate. The utility model discloses system structure is compact, can effectively improve the treatment effeciency of microorganism to sewage, and the processing speed is fast.

Description

Eutrophic sewage treatment system

Technical Field

The utility model belongs to the waste water treatment field, more specifically say, involve an eutrophic sewage treatment system.

Background

Because domestic water resources are deficient and water pollution is more and more serious, the sewage treatment system is widely applied. And the sewage treatment systems used for treating different sewages are different. So that it is necessary to design a corresponding sewage treatment system according to the characteristics of various sewages.

The water eutrophication refers to a water pollution state in which the water ecosystem is gradually destroyed because the input and output of nutritive salts are unbalanced due to excessive contents of nitrogen, phosphorus and the like in the water and finally a single species grows excessively. When the water body is eutrophicated, a large amount of floating organisms can breed, thereby consuming a large amount of oxygen in the water and leading a large amount of aquatic animals to die. When the eutrophication phenomenon appears in the water body, the transparency is reduced, the photosynthesis and the oxygen release of the plants in the water are influenced, so that the underwater plants are blocked to die due to the photosynthesis, and the decayed plants release nutrient substances such as nitrogen and phosphorus for the utilization of algae to form a vicious circle.

The industrial water eutrophication treatment technology in the prior art mainly comprises mechanical filtration and microbial treatment, wherein insoluble substances are removed by a physical method, and then sewage is further treated by microbes to play a certain purification role.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to provide an eutrophic sewage treatment system to solve the defects in the technical background.

The technical problem solved by the utility model is realized by adopting the following technical method:

a eutrophic sewage treatment system comprises a mud-water separation device, wherein the water outlet end of the mud-water separation device is sequentially connected with an anaerobic tank, a first moving bed biofilm reactor, a transition frame and a second moving bed biofilm reactor; the volume of the first moving bed biofilm reactor is 1/3-1/2 of that of the second moving bed biofilm reactor; the transition frame is erected between the first moving bed biofilm reactor and the second moving bed biofilm reactor and is connected with a water outlet of the first moving bed biofilm reactor and a water inlet of the second moving bed biofilm reactor, the transition frame is of a U-shaped water passing groove structure, the water passing depth in the groove is 90-120 mm, an aeration pipe is arranged at the bottom of the groove, a water passing plate is arranged at a position 30-50 cm below the water passing depth, the water passing plate is a hollow structure plate, and a filler ball is arranged on the water passing plate.

As a further limitation, a filtering device is arranged in the mud-water separation device, and the filtering device is of a water passing pipe structure with a plurality of groups of nylon polytetrafluoroethylene filter screens arranged inside and is arranged at a water outlet of the mud-water separation device.

As a further limitation, the mud-water separation device is a centrifugal pump type mud-water separation device.

As a further limitation, the sludge outlet end of the sludge-water separation device is connected with a plate-and-frame filter press, and the filtrate outlet of the plate-and-frame filter press is also connected with the first moving bed biofilm reactor; and the filter-pressing bottom mud is subjected to landfill treatment.

As a further limitation, a submersible stirrer is arranged in the tank body of the anaerobic tank.

As a further limitation, the flow velocity of the water passing through the transition frame is 0.7-1.2 m/s.

As further inject, it includes the grid support to cross the water board, the fretwork hole that the grid support corresponds is the square fretwork hole of 20~30cm of side length, and its fretwork hole position is fixed with the epirelief panel, and the epirelief height of epirelief panel is 2~3cm, and leaves 2~3 cm's clearance between epirelief panel and the adjacent grid support body.

As a further limitation, the bottom of the transition frame is also provided with an ultrasonic device.

Has the advantages that: the utility model discloses an eutrophic sewage treatment system is applicable to the well of eutrophication, small-size domestic sewage and breed waste water treatment, it carries out the biomembrane reaction through moving bed biofilm reactor twice with the eutrophic sewage after the mud-water separation device separation and in order to guarantee the reaction treatment speed of microorganism to sewage, its first time moves the volume of bed biofilm reactor through reducing the reactor, effectively guarantee treatment effeciency and treatment rate in the single unit interval, its effect is similar to the coarse processing, then remove bed biofilm reaction through the second time and reactThe device carries out advanced treatment, and after two times of moving bed biofilm reactor treatment, COD in the sewage can be caused_crAnd BOD₅The removal rate can be respectively improved to 88 percent and 98 percent;

and a transition frame is arranged between the two moving bed biomembrane reactors, the transition frame can fully pre-aerate the sewage entering the second moving bed biomembrane reactor, and disperse the harmful gas metabolized by the sewage in the first moving bed biomembrane to improve the treatment efficiency of the sewage in the second moving bed biomembrane reactor, so as to fully utilize the advantages of the moving bed biomembrane reactors to carry out nitrogen and phosphorus absorption treatment, and play a role in purifying water.

Drawings

Fig. 1 is a schematic diagram of a preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure view of the transition frame in fig. 1.

Wherein: 1. a sewage inlet; 2. a mud-water separation device; 3. an anaerobic tank; 4. a first moving bed biofilm reactor; 5. a transition frame; 6. a second moving bed biofilm reactor; 7. a water outlet; 8. a plate-and-frame filter press; 9. a sludge outlet; 61. a transition frame body; 62. a grid support; 63. an upper convex panel; 64. an aeration pipe; 65. a filler ball; 66. and (4) sewage.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1 and 2, a preferred embodiment of the eutrophic sewage treatment system is shown, in which the eutrophic sewage treatment system is used for treating breeding sewage of a small pig farm. It includes mud-water separation device 2, breeds sewage and send into mud-water separation device 2 through sewage entry 1 after detaching surface solid waste, and this mud-water separation device 2 is centrifugal pump formula mud-water separation device, through centrifugal separation mode with breeding sewage moisture into mud and sewage two parts, is provided with filter equipment on the outlet pipe of its sewage part, and this filter equipment sets up three for insideThe water passing pipe structure of the nylon polytetrafluoroethylene filter screen is connected to the sewage outlet pipe, and the mesh sizes of the three groups of nylon polytetrafluoroethylene filter screens are 1-5 mm²And the meshes of the two adjacent layers of nylon polytetrafluoroethylene filter screens are staggered and keep a distance of 4-6 mm.

A sewage outlet pipe of the mud-water separation device 2 is directly connected with an anaerobic tank 3, a first moving bed biofilm reactor 4, a transition frame 5 and a second moving bed biofilm reactor 6 in sequence through a water outlet pipe, wherein a submersible stirrer is arranged in a tank body of the anaerobic tank 3 so as to improve the anaerobic reaction efficiency by mechanically stirring anaerobic bacteria carriers; the first moving bed biofilm reactor 4 is arranged behind the anaerobic tank 3 to further react the sewage subjected to the anaerobic reaction in the anaerobic tank 3, and in the embodiment, the volume of the first moving bed biofilm reactor 4 is preferably 1/2 of the second moving bed biofilm reactor 6, so as to ensure that the sewage subjected to the rapid reaction in the first moving bed biofilm reactor 4 can be carried by the second moving bed biofilm reactor 6 and subjected to subsequent treatment.

The transition frame 5 is erected between the first moving bed biofilm reactor 4 and the second moving bed biofilm reactor 6 and is connected with a water outlet of the first moving bed biofilm reactor 4 and a water inlet of the second moving bed biofilm reactor 6, the structure of the transition frame 5 is shown in figure 2 and comprises a water passing groove structure with a U-shaped cross section, a transition frame body 61 of the transition frame is made of glass fiber reinforced plastic materials, and an ultrasonic device is arranged at the bottom of the transition frame. In the preferred embodiment, the water passing depth of the sewage 66 in the tank of the transition frame 5 is 100mm, five groups of aeration pipes 64 are arranged at the bottom of the tank, a water passing plate is arranged at a position 30cm below the water passing depth of the sewage 66, the water passing plate comprises upper convex arc panels 63 arranged in an array shape, the orthographic projection of the upper convex arc panels 63 is a square with the side length of 18cm and the upward convex height of 2cm, the upper convex panels are fixed in grid holes of the grid support 62, a gap of 2-3 cm is reserved between each upper convex arc panel 63 and the adjacent frame body of the grid support 62, and in addition, filler balls 65 are uniformly arranged on the upper convex arc panels 63 and the grid support 62.

The transition frame 5 is obliquely arranged between the first moving bed biofilm reactor 4 and the second moving bed biofilm reactor 6 to ensure that the sewage 66 flows along the preset direction of the transition frame 5 under the action of gravity, and the flow speed of sewage passing water on the water passing plate of the transition frame is controlled to be 0.7-1.2 m/s by controlling the inclination of the transition frame 5.

In the embodiment, after the culture sewage is separated by the sludge-water separation device 2, the sewage is treated by the anaerobic tank 3, the first moving bed biofilm reactor 4 and the second moving bed biofilm reactor 6 in sequence and then discharged from the outlet of the rear water outlet 7 of the second moving bed biofilm reactor 6 or directly enters a municipal sewage recovery end or enters other subsequent purification equipment for further purification; the mud outlet end of the mud-water separation device 2 is connected with a plate-and-frame filter press 8, and the filtrate outlet of the plate-and-frame filter press 8 is also connected with the first moving bed biofilm reactor 4; and the filter-pressing bottom mud is discharged from the mud outlet 9 and is used as the crop plowing mud after being buried.

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. The eutrophic sewage treatment system comprises a mud-water separation device, and is characterized in that the water outlet end of the mud-water separation device is sequentially connected with an anaerobic tank, a first moving bed biofilm reactor, a transition frame and a second moving bed biofilm reactor; the volume of the first moving bed biofilm reactor is 1/3-1/2 of that of the second moving bed biofilm reactor; the transition frame is erected between the first moving bed biofilm reactor and the second moving bed biofilm reactor and is connected with a water outlet of the first moving bed biofilm reactor and a water inlet of the second moving bed biofilm reactor, the transition frame is of a U-shaped water passing groove structure, the water passing depth in the groove is 90-120 mm, an aeration pipe is arranged at the groove bottom, a water passing plate is arranged at a position 30-50 cm below the water passing depth, the water passing plate is a hollow structure plate, and a filler ball is arranged on the water passing plate.

2. An eutrophic sewage treatment system according to claim 1, wherein a filtering device is built in the mud-water separating device, and the filtering device is a water pipe structure with a plurality of groups of nylon polytetrafluoroethylene filter screens arranged inside and is arranged at the water outlet of the mud-water separating device.

3. The eutrophic sewage treatment system of claim 1, wherein the sludge-water separation device is a centrifugal pump type sludge-water separation device.

4. An eutrophic sewage treatment system according to claim 1, where the sludge outlet of the sludge-water separation device is connected to a plate-and-frame filter press, and the filtrate outlet of the plate-and-frame filter press is also connected to the first moving bed biofilm reactor.

5. An eutrophic sewage treatment system according to claim 1, where a submersible mixer is provided in the body of the anaerobic tank.

6. The eutrophic sewage treatment system of claim 1, wherein the water passing plate comprises a grid support, the hollowed holes corresponding to the grid support are square hollowed holes with side length of 20-30 cm, the hollowed holes are fixed with upper convex arc panels, the upper convex height of the upper convex arc panels is 2-3 cm, and gaps of 2-3 cm are reserved between the upper convex arc panels and the adjacent grid support frame bodies.

7. The eutrophic wastewater treatment system of claim 1, wherein an ultrasonic device is further provided at the bottom of the transition frame.