CN216106213U - Anaerobic reaction device - Google Patents

Abstract

The utility model provides an anaerobic reaction device, which comprises a reaction tank, a baffling unit, a water passing plate and a sludge hopper; one end of the reaction tank is provided with a water inlet, and the other end of the reaction tank is provided with a water outlet; the baffle units are at least two and are sequentially arranged in the reaction tank along the direction from the water inlet to the water outlet; each baffle unit comprises a baffle plate and a packing layer, the baffle plate is vertically arranged, the top end of the baffle plate is connected with the top of the reaction tank, and a water passing gap is reserved between the bottom end of the baffle plate and the bottom of the reaction tank; the packing layer is arranged at the downstream of the water passing gap of the same unit baffle plate, and one end of the packing layer is connected with the baffle plate; the water passing plate is vertically arranged, the bottom end of the water passing plate is connected with the bottom of the reaction tank, and a water passing channel is arranged at the top end of the water passing plate; and a water passing plate is arranged between any two adjacent deflection units and is connected with the other end of the packing layer of the previous deflection unit. The utility model can realize that the water body reaches the discharge standard after being purified, and can reduce the operation cost.

Description

Anaerobic reaction device

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to an anaerobic reaction device.

Background

The breeding sewage belongs to three high sewage with high COD, high suspended matter and high phosphorus and nitrogen. When treating such sewage, anaerobic treatment is an indispensable and important link. The reaction apparatus for anaerobic treatment mainly includes a complete mixing anaerobic reactor (CSTR), an anaerobic biofilter (AF), an Anaerobic Fluidized Bed (AFB), an Upflow Anaerobic Sludge Blanket (UASB), an anaerobic external circulation reactor (EGSB), an anaerobic internal circulation reactor (EGSB/IC, etc.) and a baffled anaerobic reactor (ABR).

However, the above-mentioned reaction devices for anaerobic treatment all have more or less drawbacks in use. Specifically, the method comprises the following steps:

1) the tank capacity of the complete mixing anaerobic reactor (CSTR) is larger, the manufacturing cost is increased, and a mechanical stirring device (such as a stirrer) is required to be arranged in the reaction, so that the power consumption is larger; when the reactor is used, the retention time of sewage is basically equal to that of sludge (containing microorganisms for degrading sewage), namely SRT (single-stranded chain transfer) is HRT, which is a direct reason for larger tank volume and higher manufacturing cost, so that not only is the operation energy consumption of the reactor increased, but also the sludge (mainly anaerobic flora) is easy to run off, so that higher sludge concentration cannot be maintained in the reactor, and the volume load is lower; due to the existence of dead angles in the reaction tank, the mass transfer effect of microorganisms in the sludge is poor, the sewage cannot be fully purified, and finally the quality of effluent is poor; the closed structure characteristic is inconvenient for maintenance and increases the potential safety hazard of maintenance.

2) When the anaerobic biofilter (AF) is used, the sludge retention time is longer, the sewage retention time is shorter, the phase separation of the SRT and the HRT is realized, the volume load of the reactor is improved, and the volume of the reactor is reduced. However, the problem of sludge loss can not be avoided, the filter material is expensive to use and replace, the filter material is easy to block, and a simple and effective cleaning method is not available after the filter material is blocked, so that great inconvenience is brought to maintenance; furthermore, the filler carrier used in the anaerobic biological filter is easy to short circuit and block, and is not resistant to high-concentration SS (SS represents suspended matters, namely suspended solid matters suspended in water, including inorganic matters, organic matters, silt, clay, microorganisms and the like which are insoluble in water) sewage; in addition, the backwashing energy consumption of the anaerobic biological filter is large.

3) When the anaerobic fluidized bed is used, a large amount of energy is needed for maintaining the fluidized state, the energy consumption is high, the formation of a biological film and the thickness of the biological film are difficult to control, sludge is easy to run off, the shape of a real fluidized bed is difficult to realize, the process control is difficult, and the investment and operation cost is high.

4) The UASB upflow anaerobic reactor, the anaerobic external circulation reactor (EGSB) and the anaerobic internal circulation reactor (EGSB/IC and the like) basically realize the three-phase separation of water, gas and solid (sludge), although the occupied space is small, the volume load is also higher, the equipment investment and the operation cost are higher, and the maintenance is also more troublesome; the requirement on SS is strict, and the method is only suitable for treating organic wastewater with low SS content.

5) The traditional baffled anaerobic reactor (ABR) is not suitable for overhigh sewage rising flow velocity (not more than 1.0m/h), so the depth of the reactor is not suitable for overhigh, and the occupied area is relatively large; in order to save land, the reaction tank is generally deeper, the water distribution requirement is higher, and the uniform water distribution and the realization and maintenance of an ideal plug flow state are difficult to realize only by water inlet; in addition, a stirring device is not generally arranged in the reactor, so that a sewage purification dead angle is easy to occur, the first grid reaction chamber bears the impact of the highest load, and the design requirement is higher in order to avoid the influence of overload of the load; in addition, the mode of liquid level water passing between the compartments requires that the reactor is in a fully sealed state, so that the maintenance is inconvenient.

In conclusion, an anaerobic reaction device is urgently needed to solve the problems of poor effluent quality and high operation cost in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anaerobic reaction device, which has the following specific technical scheme:

an anaerobic reaction device comprises a reaction tank, a baffling unit, a water passing plate and a sludge hopper; one end of the reaction tank is provided with a water inlet, and the other end of the reaction tank is provided with a water outlet;

the baffle units are at least two and are sequentially arranged in the reaction tank along the direction from the water inlet to the water outlet; each baffle unit comprises a baffle plate and a packing layer, the baffle plate is vertically arranged, the top end of the baffle plate is connected with the top of the reaction tank, and a water passing gap is reserved between the bottom end of the baffle plate and the bottom of the reaction tank; the packing layer is arranged at the downstream of the water passing gap of the same unit baffle plate, and one end of the packing layer is connected with the baffle plate;

the water passing plate is vertically arranged, the bottom end of the water passing plate is connected with the bottom of the reaction tank, and a water passing channel is arranged at the top end of the water passing plate; a water passing plate is arranged between any two adjacent deflection units and is connected with the other end of the packing layer of the previous deflection unit;

the sludge hoppers are arranged at the bottom of the reaction tank, the number of the sludge hoppers is equal to that of the deflection units, and the sludge hoppers and the deflection units are arranged in one-to-one correspondence.

Preferably, the anaerobic reaction device further comprises a sludge discharge water return pipeline, a sand discharge water return pipeline and a power part; one end of each of the sludge discharge water return pipeline and the sand discharge water return pipeline is communicated with each sludge hopper, and the other end of each of the sludge discharge water return pipeline and the sand discharge water return pipeline is communicated with the sediment collecting device; the height of the connecting position of the sludge discharging and returning pipeline and the sludge hopper is higher than that of the connecting position of the sludge discharging and returning pipeline and the sludge hopper; the sludge discharge water return pipeline and the sand discharge water return pipeline are also communicated with the water body purified by the reaction tank through a water return branch;

the power piece is including setting up the first power piece on row's mud return water pipeline and setting up the second power piece on row's husky return water pipeline respectively.

Preferably, the part of the sludge discharge and return pipeline, which is positioned in each sludge hopper, comprises a first main pipeline and a plurality of first branch pipelines which are arranged on the first main pipeline in parallel; a plurality of sludge collecting and water returning ports are arranged on the first branch pipeline;

the part of the sand discharge water return pipeline, which is positioned in each sludge hopper, comprises a second main pipeline and a plurality of second branch pipelines which are arranged on the second main pipeline in parallel; and a plurality of sand collecting and water returning ports are arranged on the second branch pipeline.

Preferably, the first branch pipelines are horizontally arranged and uniformly distributed around the first main pipeline; the second branch pipelines are horizontally arranged and evenly distributed around the second main pipeline; the distance between the first branch pipeline and the bottom of the sludge hopper is 700-800 mm; the distance between the second branch pipeline and the bottom of the sludge hopper is 150 mm and 250 mm.

Preferably, the opening direction of the sludge collecting and water returning port is inclined downwards, and the included angle between the central axis of the sludge collecting and water returning port and the vertical direction is 30-60 degrees;

the opening direction of the sand collecting water return port is inclined downwards, and the included angle between the central axis of the sand collecting water return port and the vertical direction is 30-60 degrees.

Preferably, the anaerobic reaction device further comprises a slag discharging unit, wherein the slag discharging unit comprises a plurality of slag discharging pipes horizontally arranged in the reaction tank; the slag discharge pipes and the deflection units are arranged in one-to-one correspondence; the height of the central axis of the slag discharging pipe in the vertical direction is higher than that of the central axis of the water passing channel in the vertical direction, and the height difference between the two is less than 100 mm; a plurality of slag collecting openings for collecting scum on the surface layer of the water body are arranged on the slag discharging pipe; and the external slag collecting device of the slag discharging pipe is communicated.

Preferably, the opening direction of the slag collection port is opposite to the baffle plate; the opening angle of the slag collecting opening is 90-120 degrees.

Preferably, the diameter of the slag discharge pipe is 160-200 mm.

Preferably, the sludge discharge water return pipeline, the sand discharge water return pipeline, the water return branch and the slag discharge pipe are all provided with control valves.

Preferably, the water inlet and the water outlet of the reaction tank are both provided with water distribution weirs.

The technical scheme of the utility model has the following beneficial effects:

the anaerobic reaction device comprises a plurality of baffle units which are sequentially arranged in a reaction tank, and a water passing plate is arranged between any two adjacent baffle units, so that the change of the baffle plates and the water passing plate on the flow direction of a water body is ingeniously utilized, the water body flows from bottom to top, pollutants in the water body are oxidized and degraded through a packing layer, the purification purpose is achieved, and the purified water body can be directly discharged through a water outlet. The utility model ensures the full utilization of the internal space of the reaction tank, and realizes that the water body can reach the discharge standard after being purified by the baffling unit under the condition that the volume of the reaction tank is not increased or smaller. In addition, the utility model realizes the water body to flow from bottom to top in an overflow mode by changing the flow direction of the water body through the baffle plate and the water passing plate, and can greatly reduce the operation cost.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view showing the construction of an anaerobic reaction apparatus according to example 1 of the present invention;

FIG. 2 is a radial cross-sectional view of a first branch of the sludge discharge and return line of FIG. 1;

FIG. 3 is a radial cross-sectional view of a second branch pipe of the sand discharge and return pipe of FIG. 1;

FIG. 4 is a radial cross-sectional view of the slag runner pipe of FIG. 1;

the system comprises a reaction tank 1, a water inlet 1.1, a water outlet 1.2, a water passing plate 2.1, a water passing channel 3, a sludge hopper 4, a baffle plate 5, a packing layer 6, a sludge discharging and water returning pipeline 7, a sand discharging and water returning pipeline 8, a first power part 9, a second power part 10, a water returning branch, a sludge collecting and water returning port A, a sand collecting and water returning port B, a sand collecting and water returning port C, a slag collecting port, a water passing gap W, a water distributing weir L and a water distributing weir.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

Example 1:

referring to fig. 1, an anaerobic reaction apparatus includes a reaction tank 1, a baffle unit, a water passing plate 2 and a sludge hopper 3; a water inlet 1.1 is arranged at one end of the top of the reaction tank 1, and a water outlet 1.2 is arranged at the other end of the top of the reaction tank;

the number of the baffle units is five, and all the baffle units are sequentially arranged in the reaction tank 1 in the direction from the water inlet 1.1 to the water outlet 1.2 of the reaction tank 1; each baffle unit comprises a baffle plate 4 and a packing layer 5, the baffle plate 4 is vertically arranged, the top end of the baffle plate 4 is connected with the top of the reaction tank 1, and a water passing gap W is reserved between the bottom end of the baffle plate and the bottom of the reaction tank 1; the packing layer 5 is arranged at the downstream of the water passing gap W of the same unit baffle plate 4, and one end of the packing layer 5 is connected with the baffle plate 4;

the water passing plates 2 (four in number) are vertically arranged, the bottom ends of the water passing plates are connected with the bottom of the reaction tank 1, and the top ends of the water passing plates are provided with water passing channels 2.1; a water passing plate 2 is arranged between any two adjacent deflection units, and the water passing plate 2 is connected with the other end of the packing layer 5 of the previous deflection unit;

the sludge hoppers 3 are arranged at the bottom of the reaction tank 1, the number of the sludge hoppers 3 is equal to that of the deflection units, and the sludge hoppers and the deflection units are arranged in one-to-one correspondence.

The anaerobic reaction device also comprises a sludge discharge water return pipeline 6, a sand discharge water return pipeline 7 and a power part; one end of each of the sludge discharge water return pipeline 6 and the sand discharge water return pipeline 7 is communicated with each sludge hopper 3, and the other end of each of the sludge discharge water return pipelines is communicated with a silt collecting device; the height of the connecting position of the sludge discharging and returning pipeline 6 and the sludge hopper 3 (namely the inlet position of the sludge discharging and returning pipeline 6 for residual sludge to enter, such as a sludge collecting and returning port A) is higher than that of the connecting position of the sand discharging and returning pipeline 7 and the sludge hopper 3 (namely the inlet position of the sand discharging and returning pipeline 6 for sand to enter, such as a sand collecting and returning port B), which mainly considers that the mass of the residual sludge is lighter than that of the sand, so that the corresponding deposition position in the sludge hopper 3 is higher than that of the sand; the sludge-discharging water-returning pipeline 6 and the sand-discharging water-returning pipeline 7 are also communicated with the purified water body of the reaction tank 1 through a water-returning branch 10 (the purified water body is the water body purified by a deflection unit which is arranged in the reaction tank 1 and is close to the water outlet 1.2, in particular the water body above the packing layer 5 in the deflection unit);

the power piece is including setting up first power piece 8 (specifically for the circulating pump) on row's mud return water pipeline 6 and setting up the second power piece 9 (specifically for arranging the sand pump) on row's husky return water pipeline 7 respectively.

The sludge discharge and return pipeline 6 comprises a first main pipeline and a plurality of first branch pipelines which are arranged on the first main pipeline in parallel at the part positioned in each sludge hopper 3; a plurality of mud collecting and water returning ports A are formed in the first branch pipeline;

the part of the sand discharge water return pipeline 7, which is positioned in each sludge hopper 3, comprises a second main pipeline and a plurality of second branch pipelines which are arranged on the second main pipeline in parallel; and a plurality of sand collecting and water returning ports B are arranged on the second branch pipeline.

The first branch pipelines are horizontally arranged and evenly distributed around the first main pipeline; the second branch pipelines are horizontally arranged and uniformly distributed around the second main pipeline; the distance between the first branch pipeline and the bottom of the sludge hopper 3 is 750 mm; the second branch pipeline is 200mm away from the bottom of the sludge hopper 3.

The opening direction slant of collection mud return water mouth A is down, just collection mud return water mouth A's the central axis is 45 with the contained angle of vertical direction, is convenient for collect excess sludge on the one hand, and on the other hand is convenient for when the return water, and the backward flow water can with the rapid mixing of excess sludge and the water in the sludge bucket 3. Specifically, all the sludge collecting and water returning ports A can be arranged in a straight line along the length direction of the first branch pipeline; or can be arranged in two rows in parallel along the length direction of the first branch pipeline; the first branch pipelines can also be arranged in a staggered way along the length direction of the first branch pipelines. In embodiment 1, all the sludge collecting and water returning ports a are arranged in two parallel rows along the length direction of the first branch pipeline, specifically referring to fig. 2.

The opening direction slant of collection sand return water mouth B is down, just the central axis of collection sand return water mouth B is 45 with the contained angle of vertical direction, is convenient for collect husky body on the one hand, and on the other hand is convenient for when the return water, and the backward flow water can with the husky body and the water quick mixing in the sludge bucket 3. Specifically, all the sand-collecting water return ports B can be arranged in a straight line along the length direction of the second branch pipeline; or can be arranged in two rows in parallel along the length direction of the second branch pipeline; the second branch pipelines can also be arranged in a staggered way along the length direction of the second branch pipelines. In embodiment 1, all the sand-collecting water-returning ports B are arranged in two parallel rows along the length direction of the second branch pipeline, specifically referring to fig. 3.

Referring to fig. 1 and 4, the anaerobic reaction apparatus further comprises a slag discharge unit, wherein the slag discharge unit comprises a plurality of slag discharge pipes (specifically, cylindrical slag discharge pipes) horizontally arranged in the reaction tank 1; the slag discharge pipes and the deflection units are arranged in one-to-one correspondence (note that in the embodiment 1, no slag discharge pipe is arranged in the deflection unit close to the water outlet 1.2); the central axis of the slag discharge pipe is flush with the central axis of the water passing channel 2.1; a plurality of slag collecting openings C for collecting scum on the surface layer of the water body are formed in the slag discharge pipe; the slag discharge pipe is communicated with an external slag collecting device.

Referring to fig. 4, the opening direction of the slag collection port C is arranged opposite to the baffle plate 4, and the central axis of the opening of the slag collection port C is perpendicular to the vertical direction; the opening angle of the slag collecting port C is 90 degrees (namely the central angle of the arc where the opening of the slag collecting port C is located is 90 degrees), so that slag can be collected quickly.

The diameter of the slag discharge pipe is 160 mm.

Control valves are arranged on the sludge discharge water return pipeline 6, the sand discharge water return pipeline 7, the water return branch 10 and the slag discharge pipe;

specifically, referring to fig. 1, a 2# control valve, a 4# control valve, a 6# control valve and an 8# control valve are respectively arranged on the sludge discharging and returning pipeline 6 for controlling the on-off of each first main pipeline (note that in embodiment 1, the sludge hopper 3 corresponding to the deflection unit near the water outlet 1.2 is not provided with the first main pipeline, and further, the first branch pipeline is not provided); a 14# control valve is also arranged on a pipe section of the sludge discharge and water return pipeline 6 communicated with the first power part 8; a 12# control valve is arranged on a pipe section of the first power part 8 communicated with the sediment collecting device;

a No. 1 control valve, a No. 3 control valve, a No. 5 control valve, a No. 7 control valve and a No. 9 control valve which are respectively used for controlling the on-off of each second main pipeline are arranged on the sand-discharging water return pipeline 7; a 16# control valve is further arranged on a pipe section of the sand discharge water return pipeline 7 communicated with the second power part 9; a 17# control valve is arranged on a pipe section of the second power part 9 communicated with the sediment collecting device; a No. 15 control valve is arranged between the sand discharge water return pipeline 7 and the sludge discharge water return pipeline 6;

a No. 10 control valve is arranged on the return branch 10, and a No. 13 control valve is arranged between the return branch 10 and the sludge and water discharge and return pipeline 6; the return water branch 10 is communicated with a first power part 8 through a No. 11 control valve and is communicated with the sludge discharge return water pipeline 6 through the first power part 8;

the control valve on the deslagging pipe is used for controlling the start and stop of deslagging operation, and particularly, when the thickness of scum on the surface layer of a water body is larger than 100mm, deslagging needs to be carried out in time.

The water distribution weirs L are arranged at the water inlet 1.1 and the water outlet 1.2 of the reaction tank 1, so that the uniform water distribution effect of the water body is realized, wherein the water distribution weirs L arranged at the water inlet 1.1 can ensure the comprehensive impact of the water body newly entering the reaction tank 1 on the residual water body in the reaction tank 1, and ensure the uniform mixing of the two water bodies; the water distribution weir L arranged at the water outlet 1.2 can ensure that the purified water can be discharged from the water inlet 1.2 only after reaching the height of the water distribution weir L.

In example 1, the anaerobic reaction device specifically operates as follows:

and step S1, assembling the anaerobic reaction device at the downstream of the culture sewage, wherein the culture sewage flows into the reaction tank 1 through the water distribution weir L through the water inlet 1.1 of the reaction tank 1.

S2, purifying the breeding sewage step by step through a plurality of baffle units and water passing plates 2 arranged in a reaction tank 1; the arrangement of the baffle unit and the water passing plate 2 skillfully utilizes the change of the baffle plate 4 and the water passing plate 2 to the flow direction of the water body, so that the water body flows from bottom to top, pollutants in the water body are oxidized and degraded through the packing layer 5, the purification purpose is achieved, one part of the purified water body is discharged through the water outlet 1.2, and the other part of the purified water body is used for recycling;

in the flowing purification process of the water body in the reaction tank 1, the water level is always kept higher than the water channel 2.1, and because a floating scum layer (with the thickness of 30-50mm) is arranged above the water body, the water body and the air above the liquid level can be basically isolated, an anaerobic environment is created for water body purification, and the purification effect is ensured.

Step S3, if excessive scum is generated in the water body in the flowing purification process, the scum is discharged through a scum pipe through a scum collecting port C;

excess sludge and sand bodies generated in the flowing purification process of the water body are stored in the sludge hopper 3, and if the amount of the produced excess sludge and sand bodies is too large, the excess sludge and sand bodies need to be discharged in time through the sludge discharge water return pipeline 6 and the sand discharge water return pipeline 7.

Wherein the operation of discharging excess sludge is:

firstly, closing a 1# control valve, a 3# control valve, a 5# control valve, a 7# control valve, a 9# control valve, a 10# control valve, a 14# control valve, a 15# control valve, a 16# control valve, a 17# control valve and a second power piece 9 to realize the closing of the sand-discharging water-returning pipeline 7 and the water-returning branch pipeline 10;

secondly, opening the 11# control valve, the 12# control valve and the 13# control valve;

and finally, according to the actual requirement of discharging the excess sludge, opening any one or more of a 2# control valve, a 4# control valve, a 6# control valve and an 8# control valve, opening the first power part 8, and discharging the excess sludge in the sludge hopper 3 to a silt collecting device.

The sand body discharging operation comprises the following steps:

firstly, closing a 2# control valve, a 4# control valve, a 6# control valve, an 8# control valve, a 10# control valve, a 11# control valve, a 12# control valve, a 13# control valve, a 14# control valve, a 15# control valve and a first power piece 8 to realize the closing of the sludge discharge and water return pipeline 6 and the water return branch pipeline 10;

secondly, opening a 16# control valve and a 17# control valve;

and finally, opening any one or more of the 1# control valve, the 3# control valve, the 5# control valve, the 7# control valve and the 9# control valve, opening the second power part 9, and discharging the sand in the sludge hopper 3 to a sediment collecting device.

Step S4, when the water inlet concentration is too high and the water body purification of the reaction tank 1 is overloaded, or when the water inlet strength is too low and the water body in the reaction tank 1 is not mixed uniformly, or when the sludge discharge water return pipeline 6 or the sand discharge water return pipeline 7 is blocked, the water return operation is required; the method is specifically divided into the following three operation modes:

the first operation mode is used for the two situations when the water purification of the reaction tank 1 is overloaded due to too high water inlet concentration or when the water inlet strength is not enough to mix the water in the reaction tank 1 evenly. The corresponding operation is as follows: firstly, closing the 1# control valve, the 3# control valve, the 5# control valve, the 7# control valve, the 9# control valve, the 4# control valve, the 6# control valve, the 8# control valve, the 12# control valve, the 13# control valve, the 15# control valve, the 16# control valve, the 17# control valve and the second power member 9; secondly, opening a 10# control valve and a 11# control valve; and finally, opening a 14# control valve, a 2# control valve and a first power part 8 to realize that the returned water enters a sludge hopper 3 close to a water inlet 1.1 of the reaction tank 1, and uniformly distributing the returned water into the reaction tank 1 through a plurality of sludge collecting and returning ports A which are arranged in a staggered mode, so that the newly-fed high-concentration sewage is diluted or is combined with the newly-fed sewage with too low water inlet strength to realize the sufficient uniform mixing of the water body in the reaction tank 1.

The second mode of operation is used in the case when the sludge return line 6 is blocked. The corresponding operation is as follows: firstly, closing the 1# control valve, the 3# control valve, the 5# control valve, the 7# control valve, the 9# control valve, the 16# control valve, the 17# control valve, the 12# control valve, the 13# control valve, the 15# control valve and the second power member 9; secondly, opening a 10# control valve, a 11# control valve and a 14# control valve; and finally, according to the blockage condition of the sludge discharge and water return pipeline 6, opening any one or more of a 2# control valve, a 4# control valve, a 6# control valve and an 8# control valve, opening the first power part 8, introducing the returned water into the corresponding first main pipeline and the first branch pipeline, and flushing the blockage part of the sludge discharge and water return pipeline 6.

The third mode of operation is used in the event of blockage of the sand trap water return line 7. The corresponding operation is as follows: firstly, closing the 2# control valve, the 4# control valve, the 6# control valve, the 8# control valve, the 12# control valve, the 13# control valve, the 14# control valve, the 16# control valve, the 17# control valve and the second power member 9; secondly, opening a 10# control valve, a 11# control valve and a 15# control valve; and finally, according to the blockage condition of the sand discharge water return pipeline 7, opening any one or more of the 1# control valve, the 3# control valve, the 5# control valve, the 7# control valve and the 9# control valve, opening the first power part 8, introducing the backflow water into the corresponding second main pipeline and second branch pipeline, and flushing the blockage part of the sand discharge water return pipeline 7.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An anaerobic reaction device is characterized by comprising a reaction tank (1), a baffling unit, a water passing plate (2) and a sludge hopper (3); a water inlet (1.1) is arranged at one end of the reaction tank (1), and a water outlet (1.2) is arranged at the other end of the reaction tank;

the number of the baffle units is at least two, and the baffle units are sequentially arranged in the reaction tank (1) along the direction from the water inlet (1.1) to the water outlet (1.2); each baffle unit comprises a baffle plate (4) and a packing layer (5), the baffle plate (4) is vertically arranged, the top end of the baffle plate is connected with the top of the reaction tank (1), and a water passing gap (W) is reserved between the bottom end of the baffle plate and the bottom of the reaction tank (1); the packing layer (5) is arranged at the downstream of the water passing gap (W) of the same unit baffle plate (4), and one end of the packing layer (5) is connected with the baffle plate (4);

the water passing plate (2) is vertically arranged, the bottom end of the water passing plate is connected with the bottom of the reaction tank (1), and the top end of the water passing plate is provided with a water passing channel (2.1); a water passing plate (2) is arranged between any two adjacent deflection units, and the water passing plate (2) is connected with the other end of the packing layer (5) of the previous deflection unit;

the sludge bucket (3) is arranged at the bottom of the reaction tank (1), the number of the sludge buckets (3) is equal to that of the deflection units, and the sludge buckets and the deflection units are arranged in a one-to-one correspondence manner.

2. The anaerobic reaction device of claim 1, further comprising a sludge discharge water return line (6), a sand discharge water return line (7) and a power member; one end of each sludge discharging and returning pipeline (6) and one end of each sand discharging and returning pipeline (7) are communicated with each sludge hopper (3), and the other ends of the sludge discharging and returning pipelines are communicated with a silt collecting device; the height of the connecting position of the sludge discharging and water returning pipeline (6) and the sludge hopper (3) is higher than that of the connecting position of the sand discharging and water returning pipeline (7) and the sludge hopper (3); the sludge-discharging water return pipeline (6) and the sand-discharging water return pipeline (7) are also communicated with the purified water body of the reaction tank (1) through a water return branch (10);

the power part comprises a first power part (8) and a second power part (9), wherein the first power part (8) and the second power part (9) are respectively arranged on the sludge discharge water return pipeline (6) and the sand discharge water return pipeline (7).

3. The anaerobic reaction device according to claim 2, wherein the sludge discharge and return pipeline (6) comprises a first main pipeline and a plurality of first branch pipelines arranged in parallel on the first main pipeline in the part positioned in each sludge hopper (3); a plurality of mud collecting and water returning ports (A) are arranged on the first branch pipeline;

the part of the sand-discharging water return pipeline (7) positioned in each sludge hopper (3) comprises a second main pipeline and a plurality of second branch pipelines which are arranged on the second main pipeline in parallel; and a plurality of sand collecting and water returning ports (B) are arranged on the second branch pipeline.

4. The anaerobic reaction device of claim 3, wherein the first branch pipes are horizontally arranged and evenly distributed around the first main pipe; the second branch pipelines are horizontally arranged and evenly distributed around the second main pipeline; the distance between the first branch pipeline and the bottom of the sludge hopper (3) is 700-800 mm; the distance between the second branch pipeline and the bottom of the sludge hopper (3) is 150-250 mm.

5. The anaerobic reaction device as claimed in claim 4, characterized in that the opening direction of the sludge collecting and water returning port (A) is inclined downwards, and the included angle between the central axis of the sludge collecting and water returning port (A) and the vertical direction is 30-60 degrees;

the opening direction of the sand collecting water return port (B) is inclined downwards, and the included angle between the central axis of the sand collecting water return port (B) and the vertical direction is 30-60 degrees.

6. The anaerobic reaction device according to any of claims 2 to 5, further comprising a slag discharge unit comprising a plurality of slag discharge pipes horizontally disposed in the reaction tank (1); the slag discharge pipes and the deflection units are arranged in one-to-one correspondence; the height of the central axis of the slag discharging pipe in the vertical direction is higher than that of the central axis of the water passing channel (2.1) in the vertical direction, and the height difference between the two is less than 100 mm; a plurality of slag collecting openings (C) for collecting scum on the surface layer of the water body are arranged on the slag discharging pipe; the slag discharge pipe is communicated with an external slag collecting device.

7. The anaerobic reaction device as claimed in claim 6, characterized in that the opening direction of the slag collection port (C) is arranged opposite to the baffle plate (4); the opening angle of the slag collecting opening (C) is 90-120 degrees.

8. The anaerobic reactor as claimed in claim 7, wherein the diameter of the slag discharge pipe is 160-200 mm.

9. The anaerobic reaction device of claim 8, wherein control valves are arranged on the sludge discharge water return pipeline (6), the sand discharge water return pipeline (7), the water return branch (10) and the slag discharge pipe.

10. The anaerobic reactor device according to claim 9, characterized in that water distribution weirs (L) are arranged at both the water inlet (1.1) and the water outlet (1.2) of the reaction tank (1).

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