CN213895534U

CN213895534U - Automatic filtering device for sludge inoculation

Info

Publication number: CN213895534U
Application number: CN202022726129.4U
Authority: CN
Inventors: 刘彦奎; 程池权; 王闯道; 刘军; 宫建瑞; 王艳朋
Original assignee: Nanjing Wondux Environmental Protection Technology Co ltd
Current assignee: Nanjing Wondux Environmental Protection Technology Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-08-06
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses the bright automatic filtration device that discloses a mud inoculation, including inoculation sludge conveying system, muddy water hybrid system, automatic filtration system etc. carry the inoculation mud of moisture content 80% to the muddy water hybrid system through sludge conveying system, the inoculation mud moisture content is adjusted and is gone into automatic filtration system after 97% ~ 99%, and debris in the mixed liquid is filtered and is clear away in automatic filtration system, and inoculation mud and water get into biochemical reaction tank. The device can ensure the filtering effect, ensures the continuous and stable operation of a subsequent membrane system, is convenient to operate, can reduce the labor intensity and improve the production efficiency.

Description

Automatic filtering device for sludge inoculation

Technical Field

The utility model belongs to the technical field of rubbish leachate treatment, sewage treatment, especially can reduce sludge inoculation time, reduce intensity of labour and guarantee a continuous steady operation's of follow-up system automatic filtration device simultaneously in the system's debugging phase.

Background

At present, both garbage leachate treatment systems and sewage treatment systems involve a sludge inoculation process, the feeding cannot contain large-particle impurities in order to ensure the continuous and stable operation of sewage treatment equipment, and the operation of an MBR system in the garbage leachate treatment system also requires the cleanliness of the feeding. The system water inlet system is provided with a filter which can remove impurities in the inlet water, but if a large amount of impurities enter the system in the sludge inoculation process, the previous stage of filtration can lose the effect of the system, and the operation of the subsequent system is directly influenced.

At present, the sludge inoculation and filtration are generally manual filtration, the operation mode has high labor intensity, low working efficiency and long time consumption, and the debugging progress of the system is seriously restricted.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model discloses a mud inoculation automatic filtration device can guarantee the filter effect, guarantees the continuous steady operation of follow-up membrane system, and convenient operation simultaneously, reducible intensity of labour improves production efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sludge inoculation automatic filtration device comprises an inoculation sludge conveying system, a mud-water mixing system and an automatic filtration system which are connected in sequence;

the inoculated sludge conveying system is used for conveying inoculated sludge to a sludge-water mixing system and comprises a feed inlet and a discharge outlet;

the sludge-water mixing system comprises a reactor, wherein a feed inlet, a water inlet and a discharge outlet are formed in the reactor, and a stirring device is arranged in the reactor; the feed port is connected with a discharge port of the inoculated sludge conveying system, and the discharge port is connected with a feed port of the automatic filtering system;

the automatic filtering system comprises an outer barrel, an inner barrel arranged in the outer barrel and a driving device for driving the inner barrel to rotate; one end of the inner cylinder is communicated with a discharge hole of the mud-water mixing system, the other end of the inner cylinder is a slag hole, a conveying screw is axially arranged on the inner wall of the inner cylinder, and a filter screen is arranged on the side wall of the inner cylinder; and a discharge hole is formed in the bottom of the outer barrel.

Further, the screw conveyer that inoculation sludge conveying system includes, in order to guarantee to carry the effect and avoid producing secondary pollution to the environment, conveyor adopts the closed operation.

Further, the spiral conveyer is obliquely arranged, and sludge is conveyed to the reactor.

Furthermore, a stirring device is arranged in the reactor to form a mud-water mixing system, activated sludge and clear water in the mud-water mixing system are mixed and diluted, the activated sludge is completely dispersed into the mixed liquid, and the mixed liquid automatically flows into the automatic filtering system.

Further, the aperture of a filter screen arranged in the filter system is 1-2 mm, so that sundries can be retained.

Further, the inner cylinder rotates under the action of the driving device, and the muddy water mixed liquid removes large impurities in the filtering system.

Furthermore, a plurality of spray heads are arranged inside the outer barrel and above the inner barrel along the axial direction of the inner barrel and used for washing sundries adhered to the filter screen and ensuring the filtering continuity. The filtered sundries are discharged to a garbage can for periodic cleaning under the action of the conveying screw. The filtrate flows automatically or is lifted to a biochemical pool. The pressure of the flushing water was 0.3 MPa.

Furthermore, in order to save the using amount of clean water, sewage of a biochemical pool is adopted as the raw liquid for mixing the sludge and the water in the sludge and water mixing system.

Has the advantages that: the utility model discloses carry the inoculation mud with moisture content 80% to muddy water hybrid system through mud conveying system, the inoculation mud moisture content is adjusted and is gone into automatic filtration system to 95% ~ 99% back, and debris in the mixed liquid is filtered and is clear away in automatic filtration system, and inoculation mud and water get into biochemical reaction pond. The utility model discloses can guarantee the filter effect, guarantee the continuous steady operation of follow-up membrane system, convenient operation simultaneously, reducible intensity of labour improves production efficiency. And meanwhile, the automatic cleaning can be realized, so that the continuous operation can be ensured.

Drawings

Fig. 1 is a schematic structural diagram of the present invention. Reference numbers in the figures: 1. a screw conveyor; 2. a reactor; 3. a stirring device; 4. an outer cylinder; 5. an inner barrel; 6. a shower head; 7. a conveying screw.

Fig. 2 is a schematic view of the material flow direction of the present invention.

Detailed Description

As shown in fig. 1, the utility model comprises a screw conveyer 1, a reactor 2, a stirring device 3, an outer cylinder 4, an inner cylinder 5, a spray header 6 and a conveying screw 7. The discharge hole of the screw conveyer 1 is communicated with the feed inlet of the reactor 2. The feed inlet of the reactor 2 is positioned at the upper part of the reactor 2, the water inlet is positioned at the lower part of the reactor 2, and the activated sludge and the inlet water form convection. The top of the reactor 2 is provided with a motor, the rotating shaft of the motor is connected with a stirring rod, and the stirring rod is provided with stirring blades. The bottom of the outer barrel 4 is provided with a hopper, and the outlet of the hopper is a discharge hole of the outer barrel 4. A pipeline is connected between one end of the inner cylinder 5 and the discharge hole of the reactor 2, the pipeline does not rotate along with the inner cylinder 5, the other end extends to the outer side of the outer cylinder 4, and the end is provided with a driving device. The driving device comprises a chain wheel sleeved on the outer wall of the inner cylinder, a motor, a chain wheel sleeved on a rotating shaft of the motor and a chain connected with the two chain wheels. The motor drives the chain to move, thereby driving the inner barrel 5 to roll. A flushing water pipe is arranged above the inner cylinder 5, and a plurality of spray heads 6 are arranged on the flushing water pipe along the axial direction of the inner cylinder.

Based on the utility model provides a mud inoculation automatic filtration device's mud filtration step includes:

step 1: activated sludge with the water content of 80 percent is uniformly conveyed to a mud-water mixing system through the screw conveyor 1, and in order to ensure the conveying effect and avoid secondary pollution to the environment, the screw conveyor 1 is operated in a closed manner.

Step 2: the screw conveyor 1 uniformly conveys the activated sludge to the upper part of the reactor 2, and simultaneously mixed water enters from the bottom of the reactor 2. Mixing and diluting the activated sludge and clear water in the reactor 2, adjusting the water content to 95% -99%, completely dispersing the activated sludge into the mixed liquid, and automatically flowing the mixed liquid into an automatic filtering system. In order to save the clear water consumption, the sewage of the biochemical pool is adopted as the raw liquid for mixing the mud and the water in the mud and water mixing system.

And step 3: the muddy water mixed liquid automatically flows into the inner cylinder 5, the filtering aperture of the inner cylinder 5 is 1-2 mm, the muddy water mixed liquid is used for separating feed liquid and large-particle impurities, and the filtrate enters a bottom hopper and is lifted to a biochemical pool through automatic flow or a water pump; the conveying screw 7 moves under the action of the driving device to convey the intercepted filter residue to a slag outlet; the flushing water is used for the inner barrel 5 to ensure the continuity of filtration, and the pressure of the flushing water is 0.3 MPa. The inner cylinder 5 continuously rotates under the action of the driving device to ensure that the surface of the filter screen can be cleaned under the action of the flushing system. In the system, not only large-particle impurities in the muddy water mixed liquid are separated, but also the automatic cleaning is realized, so that the continuous operation is ensured.

And 4, step 4: the filtrate is lifted to a biochemical system through gravity flow or a water pump.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.

Claims

1. The automatic sludge inoculation filtering device is characterized by comprising an inoculation sludge conveying system, a sludge-water mixing system and an automatic filtering system which are sequentially connected;

2. The automatic sludge inoculation filtration device of claim 1, wherein the inoculation sludge delivery system comprises a sealed screw conveyor.

3. The automatic filtering device for sludge inoculation according to claim 1, wherein the aperture of the filter screen is 1-2 mm.

4. The automatic filter device for sludge inoculation as claimed in claim 1, wherein a plurality of spray headers are arranged inside the outer cylinder and above the inner cylinder along the axial direction of the inner cylinder, so that the filter screen can be washed in real time.