CN211445226U

CN211445226U - Self-draining fixed bed anaerobic biological filter

Info

Publication number: CN211445226U
Application number: CN201922354486.XU
Authority: CN
Inventors: 成亮
Original assignee: Jiangsu Handing Hanfang Environmental Technology Co ltd
Current assignee: Jiangsu Handing Hanfang Environmental Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-08
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a self-draining fixed bed anaerobic biological filter, which comprises a filter body, a middle water tank and a siphon pipe; the middle water tank is divided into a plurality of branch tank bodies, and the size of the middle water tank can be controlled by adjusting the number of the branch tank bodies; the middle water tank is provided with a clamping plate, and the effective volume of the middle water tank can be adjusted by pulling the clamping plate; the lower surface of the junction of the siphon water inlet pipe and the siphon water outlet pipe in the siphon pipe is slightly higher than the control liquid level in the filter body. The utility model provides a biological filter can realize the automatic drainage in filtering pond under the condition that does not need power equipment (pump, fan), improves its economic nature, reduce cost. In the operation process, part of the filler is in an anaerobic-aerobic alternate state, which is beneficial to forming GAOs and increasing the removal capacity to COD.

Description

Self-draining fixed bed anaerobic biological filter

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a downwash fixed bed anaerobic biological filter capable of unpowered automatic drainage.

Background

According to different water inlet forms, the anaerobic biofilter can be divided into an upflow anaerobic biofilter and a downflow anaerobic biofilter. Wherein, the upflow anaerobic biological filter is fed with water from the bottom and drained from the upper part, sewage enters the filter from the bottom to the top of the filter body, is drained from the upper part of the filter body through the biological purification of anaerobic flora, and simultaneously, produced biogas is drained from an air pipe arranged at the top of the filter body. Because sewage only passes through the filler once, the contact time of the sewage and the filler is short, the purification effect of the upflow anaerobic biological filter on pollutants is poor, and meanwhile, because the water outlet of the filter is overflow water, the water flow speed is slow, and the aged and fallen biological membrane in the filter is not easy to discharge. And for the down-flow anaerobic biofilter, sewage enters from the upper part of the filter body, is degraded and absorbed by anaerobic flora and then is discharged from the bottom of the filter body. Meanwhile, water is pumped out through a water pump arranged outside the tank body, and the purification of the waste water is realized. The marsh gas generated in the process is also discharged through an air pipe arranged at the top of the tank body. Because the water pump is used, the energy consumption in the treatment process is increased, and the treatment cost is increased.

Therefore, an anaerobic biological filter can be designed, the principle of a valveless filter is used for reference, automatic drainage under an unpowered system is realized, energy consumption caused by using a water pump is avoided, and the treatment efficiency is improved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a self-draining fixed bed anaerobism biofilter, filtering pond and conventional down flow formula anaerobism biofilter do not have two causes, nevertheless need to guarantee filtering pond upper portion and atmosphere intercommunication, and the technical scheme who provides sets up the buffer between anaerobism biofilter and play water storage tank through the characteristics of U-shaped pipe to realize the self-draining function under the unpowered system. The water pump that sets up through the cell body is taken out water, realizes the purification process of waste water, has increased the power consumption of processing procedure, has increased treatment cost's technical problem.

(II) technical scheme

The utility model provides a technical scheme that its technical problem adopted as follows:

a self-draining fixed bed anaerobic biological filter comprises a filter body, a middle water tank and a siphon pipe; the middle water tank is divided into a plurality of branch tank bodies, and the size of the middle water tank can be controlled by adjusting the number of the branch tank bodies; the middle water tank is provided with a clamping plate, and the effective volume of the middle water tank can be adjusted by pulling the clamping plate; the lower surface of the junction of the siphon water inlet pipe and the siphon water outlet pipe in the siphon pipe is slightly higher than the control liquid level in the filter body.

Furthermore, an emptying device should be provided in the intermediate water tank to drain off the accumulated water in case of a failure of the device.

Furthermore, the interface of the siphon and the filter body is provided with an adjusting valve to control the flow rate of the outlet water and avoid bringing too much air.

The working principle of the technical scheme is as follows: sewage flows into the middle water tank through the filter tank after entering the filter tank from the top of the filter tank body, when the water tank is full, sewage begins to be stored in the filter tank body, the sewage level is flush with the liquid level in the siphon water inlet pipe, and when the liquid level continues to rise to the top end of the siphon water inlet pipe, liquid enters the siphon water outlet pipe. The descending liquid carries gas to form vacuum in the pipe, so that the siphon phenomenon caused by the vacuum causes the sewage in the filter body and the middle water tank to be quickly discharged. When the liquid level drops to the state that the middle water tank is not full, the siphon phenomenon is destroyed due to the entering of air, and the filter body returns to normal operation.

(III) advantageous effects

Compared with the prior art, the utility model provides a pair of self-draining fixed bed anaerobism filtering pond possesses following beneficial effect:

(1) the automatic drainage of the filter tank can be realized without power equipment (pump and fan), the economy is improved, and the cost is reduced.

(2) In the operation process, part of the filler is in an anaerobic-aerobic alternate state, which is beneficial to forming GAOs and increasing the removal capacity to COD.

(3) The utility model discloses simple structure need not extensive reconstruction or rebuild, reasonable in design.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a water tank.

In the figure: 1. the filter body, 2, middle water tank, 3, siphon, 3.1, siphon inlet tube (connecting filter body and middle water tank), 3.2, siphon outlet pipe, 4, play water storage pool, 5, water tank splint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a self-draining fixed bed anaerobic biological filter comprises a filter body 1, a middle water tank 2 and a siphon 3; after sewage enters the filter tank from the top of the filter tank body 1, the sewage flows into the middle water tank 2 through the filter tank, when the water tank is full, sewage begins to be stored in the filter tank body 1, the sewage level is flush with the liquid level in the siphon water inlet pipe 3.1, and when the liquid level continues to rise to the top end of the siphon water inlet pipe 3.1, liquid enters the siphon water outlet pipe 3.2. The descending liquid carries gas to form vacuum in the pipe, and the siphon phenomenon caused by the vacuum causes the sewage in the filter tank body 1 and the middle water tank 2 to be quickly discharged and enter the effluent storage tank 4. When the liquid level drops to the level that the middle water tank 2 is not full, the siphon phenomenon is destroyed due to the entering of air, and the filter tank body 1 returns to normal operation.

The top of the siphon water inlet pipe 3.1 is slightly higher than the liquid level of the filter body so as to be used as the head loss of the sewage filter tank. The flow rate of the liquid level in the siphon inlet pipe 3.1 should be small enough to avoid bringing too much gas to block the pipe. The angle between the siphon inlet pipe 3.1 and the siphon outlet pipe 3.2 should be small enough to ensure that the liquid descends rapidly to initiate the siphon phenomenon when the liquid level reaches the highest position of the rising pipe.

Referring to fig. 2, the middle water tank 2 is divided into a plurality of sub-tanks, the size of the middle water tank can be controlled by adjusting the number of the sub-tanks, the middle water tank 2 is provided with a clamp plate 5, and the effective volume of the middle water tank 2 can be adjusted by pulling the clamp plate 5.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A self-draining fixed bed anaerobic biological filter comprises a filter body (1), a middle water tank (2) and a siphon (3); the method is characterized in that: the middle water tank (2) is divided into a plurality of branch tank bodies, and the size of the middle water tank can be controlled by adjusting the number of the branch tank bodies; the middle water tank (2) is provided with a clamping plate (5), and the effective volume of the middle water tank can be adjusted by drawing the clamping plate (5); the lower surface of the junction of the siphon water inlet pipe (3.1) and the siphon water outlet pipe (3.2) in the siphon pipe (3) is slightly higher than the control liquid level in the filter body (1).

2. The self-draining fixed bed anaerobic biological filter according to claim 1, wherein: an emptying device is arranged in the middle water tank (2) to discharge accumulated water when the device is in failure.

3. The self-draining fixed bed anaerobic biological filter according to claim 1, wherein: the interface of the siphon (3) and the filter body (1) is provided with an adjusting valve to control the flow rate of the outlet water and avoid bringing too much air.