CN215403347U

CN215403347U - Anaerobic reactor for pesticide intermediate sewage treatment

Info

Publication number: CN215403347U
Application number: CN202121651537.6U
Authority: CN
Inventors: 毛志建; 杨超; 梁亚龙; 马志合
Original assignee: Inner Mongolia Tongchuang High Tech Chemical Co ltd
Current assignee: Inner Mongolia Liwei Biotechnology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-04
Anticipated expiration: 2031-07-20

Abstract

The application provides an anaerobic reactor for treating pesticide intermediate sewage, which comprises an anaerobic tower, a water inlet pipe and a return pipe, wherein the water inlet pipe is positioned at the top end of the anaerobic tower, and the return pipe is positioned at the top outside the anaerobic tower; the top end of the anaerobic tower is provided with a water distribution tank, and one end of the water inlet pipe is connected with the water distribution tank; a water distribution system is arranged at the bottom inside the anaerobic tower, and a central pipe is connected between the water distribution tank and the water distribution system; an overflow weir is arranged at the top of the interior of the anaerobic tower, a three-phase separator is arranged at the bottom of the overflow weir, one end of a return pipe is connected with the overflow weir, the other end of the return pipe is connected with a water distribution tank, and a submersible sewage pump is arranged on the return pipe; the water inlet pipe and the return pipe are both provided with a flow meter and a control valve, and sewage in the water inlet pipe and effluent of the return pipe enter the water distribution tank according to the volume ratio of 1 (2-3). The anaerobic reactor for pesticide intermediate sewage treatment can avoid the problems of large escape of sludge and turbidity of effluent.

Description

Anaerobic reactor for pesticide intermediate sewage treatment

Technical Field

The application relates to the technical field of sewage treatment equipment, in particular to an anaerobic reactor for treating pesticide intermediate sewage.

Background

During the production process of the pesticide intermediate, a lot of sewage containing organic matters is generated, and an up-flow anaerobic sludge bed reactor is needed to purify the sewage. The existing upflow anaerobic sludge bed reactor consists of a sludge reaction zone, a gas-liquid-solid three-phase separator and a gas chamber, sewage enters from the bottom of the reactor, organic matters in the sewage are decomposed by microorganisms in the sludge reaction zone to generate methane, water and inorganic matters, the gas, the liquid and the solid are separated at the three-phase separator at the top of the reactor to achieve three-phase balance, and the reacted water is forced to flow back to the bottom of the reactor.

However, the biochemical property of the sewage generated in the production process of the pesticide intermediate is good, the efficiency of generating the biogas is high, a large amount of bubbles wrap the sludge and rise, the stable three-phase balance is destroyed, a large amount of sludge is brought to a three-phase separator, and the problems of sludge escape and turbid effluent caused by incomplete separation of sludge, water and biogas exist.

SUMMERY OF THE UTILITY MODEL

The application provides an anaerobic reactor for sewage treatment of pesticide intermediates, which is used for solving the problems of sludge escape and turbid effluent caused by incomplete separation of sludge and methane.

The application provides an anaerobic reactor for treating pesticide intermediate sewage, which comprises an anaerobic tower, a water inlet pipe and a return pipe, wherein the water inlet pipe is positioned at the top end of the anaerobic tower, and the return pipe is positioned at the top outside the anaerobic tower;

the top end of the anaerobic tower is provided with a water distribution tank, and one end of the water inlet pipe is connected with the water distribution tank;

a water distribution system is arranged at the bottom inside the anaerobic tower, and a central pipe is connected between the water distribution tank and the water distribution system;

an overflow weir is arranged at the top of the interior of the anaerobic tower, a three-phase separator is arranged at the bottom of the overflow weir, one end of a return pipe is connected with the overflow weir, the other end of the return pipe is connected with a water distribution tank, and a submersible sewage pump is arranged on the return pipe;

the water inlet pipe and the return pipe are both provided with a flow meter and a control valve, and sewage in the water inlet pipe and effluent of the return pipe enter the water distribution tank according to the volume ratio of 1 (2-3).

In one embodiment of the present application, the distribution trough is positioned one meter above the weir.

In an embodiment of the application, the water distribution system includes a main water distribution pipe and a plurality of branch water distribution pipes, the main water distribution pipe and the branch water distribution pipes are parallel to the bottom surface of the anaerobic tower, the branch water distribution pipes are uniformly distributed on two sides of the main water distribution pipe, and the pipes are perpendicular to the main water distribution pipe.

In one embodiment of the present application, a three-phase separator divides the anaerobic tower into a sludge reaction zone and a gas chamber, the volume of the gas chamber being less than the volume of the sludge reaction zone.

In one embodiment of the application, the three-phase separator comprises a plurality of long triangular groove-shaped structures which are arranged at intervals in a staggered mode, and the longitudinal section of each long triangular groove-shaped structure is in a triangular shape with an opening facing the bottom of the anaerobic tower and with an opening degree gradually decreasing upwards.

In an embodiment of this application, the mud reaction zone includes mud sedimentation zone, mixed reaction zone and refraction district from supreme in proper order down, and the height that highly is greater than the refraction district in mixed reaction zone is greater than the height in mud sedimentation zone.

In an embodiment of the application, the air chamber is located at the top of the three-phase separator, and the side wall of the anaerobic tower where the air chamber is located is provided with an air guide pipe.

In one embodiment of the application, a guard rail is arranged at the top end of the anaerobic tower.

The application provides an anaerobic reactor for pesticide midbody sewage treatment, through at anaerobic reactor top water distribution, anaerobic reactor starts the back, reduces the water distribution volume of three-phase separator export backward flow water step by step, and the marsh gas that produces among the anaerobic reactor keeps normal rising velocity of flow, can avoid the problem that mud escapes in a large number and go out water turbidity.

The application provides an anaerobic reactor for pesticide midbody sewage treatment, through getting into sewage at anaerobic reactor top, the play water after the reaction overflows from overflow weir upper portion, flows back to the water distribution tank at anaerobic reactor top again and carries out the water distribution with sewage. The distance from the overflow weir to the water distribution tank is smaller than the distance from the liquid level of the traditional anaerobic reactor to the forced return pipe, the gravity acting distance of the submersible sewage pump for overcoming water is short, and the power consumption of the submersible sewage pump can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic front view of an anaerobic reactor for treating sewage, which is a pesticide intermediate provided in an embodiment of the present application;

fig. 2 is a schematic top view of a water distribution system according to another embodiment of the present disclosure.

Description of reference numerals: 1. an anaerobic tower; 2. a water inlet pipe; 21. a first flow meter; 22. a first valve; 3. a return pipe; 31. a submersible sewage pump; 32. a second flow meter; 33. a second valve; 4. a water distribution tank; 5. a water distribution system; 51. a water distribution main pipe; 52. a water distribution branch pipe; 6. a central tube; 7. an overflow weir; 8. a three-phase separator; 9. a sludge reaction zone; 91. a sludge settling zone; 92. a mixed reaction zone; 93. a refractive region; 10. an air chamber; 101. an air duct; 11. a guard rail.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The terms referred to in this application are explained first:

an anaerobic reactor: also called an up-flow anaerobic sludge bed and an up-flow anaerobic sludge bed reactor, is an anaerobic biological method for treating sewage. Sewage enters from the bottom of the reactor and is pushed by water power, and sludge is in an expansion state in the reactor. The mixed liquid is fully reacted and then enters a settling zone with an expanded sectional area, the generated methane enters a gas collection system from the upper part through a three-phase separator, and the sludge returns to the reaction zone by gravity.

An embodiment of the application provides an anaerobic reactor for pesticide intermediate sewage treatment, as shown in fig. 1, including anaerobic tower 1, inlet tube 2 and back flow 3, inlet tube 2 is located anaerobic tower 1 top, and back flow 3 is located anaerobic tower 1 outside top.

The top end of the anaerobic tower 1 is provided with a water distribution tank 4, and one end of the water inlet pipe 2 is connected with the water distribution tank 4.

The bottom inside the anaerobic tower 1 is provided with a water distribution system 5, and a central pipe 6 is connected between the water distribution tank 4 and the water distribution system 5.

An overflow weir 7 is arranged at the top inside the anaerobic tower 1, a three-phase separator 8 is arranged at the bottom of the overflow weir 7, one end of a return pipe 3 is connected with the overflow weir 7, the other end of the return pipe 3 is connected with a water distribution tank 4, and a submersible sewage pump 31 is arranged on the return pipe 3.

The water inlet pipe 2 and the return pipe 3 are both provided with a flow meter and a control valve, and sewage in the water inlet pipe 2 and effluent of the return pipe 3 enter the water distribution tank 4 according to the volume ratio of 1 (2-3).

Sewage enters a central pipe 6 of the anaerobic tower 1 from a water inlet pipe 2 at the top through a water distribution tank 4, flows into a water distribution system 5 at the bottom under the action of gravity, and is uniformly distributed to the bottom of the anaerobic tower 1. The sewage reacts in the anaerobic tower 1 to generate biogas, the biogas is continuously discharged in the form of micro bubbles, the micro bubbles carry reacted water to rise together in the rising process and enter the three-phase separator 8, the separated effluent overflows from the overflow weir 7, is pushed by the submersible sewage pump 31 to flow back in the water return pipe to the water distribution tank 4 to be distributed with the sewage, and the proportion is controlled by the control valve and the flow meter.

The readings of the first flow meter 21 on the water inlet pipe 2 and the second flow meter 32 on the water return pipe are read by opening the first valve 22 on the water inlet pipe 2 and the second valve 33 on the water return pipe so that the ratio of the readings of the first flow meter 21 and the second flow meter 32 is about 1:3, and the ratio of the readings of the first flow meter 21 and the second flow meter 32 is about 1:2 as the amount of water in the water return pipe is gradually reduced as the reaction progresses, so as to control the reaction rate to be reduced.

The application provides an anaerobic reactor for pesticide midbody sewage treatment, through at anaerobic reactor top water distribution, anaerobic reactor starts the back, reduces the water distribution volume of 8 export backward flow of three-phase separator step by step, and the marsh gas that produces among the anaerobic reactor keeps normal rising velocity of flow, can avoid the problem that mud escapes in a large number and go out water turbidity.

The application provides an anaerobic reactor for pesticide midbody sewage treatment, through getting into sewage at anaerobic reactor top, the play water after the reaction overflows from overflow weir 7 upper portion, flows back to the water distribution groove 4 at anaerobic reactor top again and carries out the water distribution with sewage. The distance from the overflow weir 7 to the water distribution tank 4 is smaller than the distance from the liquid level of the traditional anaerobic reactor to the forced return pipe 3, the acting distance of the submersible sewage pump 31 for overcoming the gravity of water is short, and the power consumption of the submersible sewage pump 31 can be reduced.

In some embodiments, as shown in fig. 1, the distribution trough 4 is positioned one meter above the weir 7. The submersible sewage pump 31 on the return pipe needs to overcome the gravity of water to do work between the overflow weir 7 and the water distribution tank 4, and the smaller the distance of the section is, the less the electric quantity consumed by the submersible sewage pump 31 is, thus being beneficial to saving energy.

In some embodiments, as shown in fig. 2, the water distribution system 5 includes a main water distribution pipe 51 and a plurality of branch water distribution pipes 52, the main water distribution pipe 51 and the branch water distribution pipes 52 are parallel to the bottom surface of the anaerobic tower 1, the branch water distribution pipes 52 are uniformly distributed on both sides of the main water distribution pipe 51, and the pipes are perpendicular to the main water distribution pipe 51. The water distribution systems 5 which are transversely and longitudinally staggered are arranged at the bottom of the anaerobic reactor, and inlet water is uniformly distributed on the cross section at the bottom of the anaerobic tower 1, so that the same liquid inlet amount on the unit area of the bottom of the anaerobic tower 1 is ensured, the phenomena of short flow, uneven surface load and the like caused by uneven water distribution are prevented, and the dead angle of water distribution is avoided.

In some embodiments, as shown in fig. 1, a three-phase separator 8 divides the anaerobic tower 1 into a sludge reaction zone 9 and a gas chamber 10, the volume of the gas chamber 10 being smaller than the volume of the sludge reaction zone 9. A three-phase separator 8 for separating gas, liquid and stationary from each other; the sludge reaction zone 9 is used for decomposing organic matters in the sewage into methane; the gas chamber 10 is used for storing the produced biogas and leading out of the anaerobic tower 1.

In some embodiments, as shown in fig. 1, the three-phase separator 8 comprises a plurality of long triangular groove-shaped structures arranged at intervals in a staggered manner, and the longitudinal cross-sectional shapes of the long triangular groove-shaped structures are triangles with the openings facing the bottom of the anaerobic tower 1 and with the opening degrees gradually decreasing upwards. When the marsh gas touches the lower part of the long triangular groove-shaped structure, the marsh gas is bent to the periphery and reflected, and then passes through the water layer to enter the air chamber 10, thereby realizing the gas-liquid separation. The mixed liquid of solid-liquid gets into the top of long triangle groove-shaped structure through the reflection, and the flocculation takes place for mud in the sewage, and the granule increases gradually to subside under the action of gravity, thereby realize solid-liquid separation, deposit to mud on the skew wall of long triangle groove-shaped structure slide back to mud reaction zone 9 along the skew wall in, make a large amount of mud of accumulating in the reaction zone. Treated effluent separated from the sludge overflows from the upper part of the overflow weir 7 and then is discharged out of the anaerobic tower 1 through the return pipe 3. The material of the three-phase separator 8 may be ABS plastic.

In some embodiments, as shown in fig. 1, the sludge reaction zone 9 comprises a sludge settling zone 91, a mixing reaction zone 92 and a refraction zone 93 in sequence from bottom to top, and the height of the mixing reaction zone 92 is greater than the height of the refraction zone 93 is greater than the height of the sludge settling zone 91. A large amount of anaerobic sludge remains at the bottom of the anaerobic tower 1, and sludge having good settling and coagulation properties forms a sludge settling zone 91 at the lower portion. The microorganisms in the sludge decompose the organic matters in the sewage and convert the organic matters into methane, the methane is continuously discharged in the form of micro bubbles, the micro bubbles are continuously combined to gradually form larger bubbles in the rising process, and a mixed reaction zone 92 with thinner sludge concentration is formed at the upper part of the sludge settling zone 91 due to the stirring of the methane. The reacted water hits the lower part of the long triangular trough-like structure forming a refraction zone 93.

In some embodiments, as shown in fig. 1, the gas chamber 10 is located at the top of the three-phase separator 8, and the gas duct 101 is opened on the sidewall of the anaerobic tower 1 where the gas chamber 10 is located, so as to guide the generated biogas out of the anaerobic tower 1.

In some embodiments, as shown in fig. 1, a guard rail 11 is installed at the top end of the anaerobic tower 1, and an operator is required to go up to the top of the anaerobic tower 1 to operate during water distribution, cleaning and maintenance, and the guard rail 11 is used for protecting the safety of the operator.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An anaerobic reactor for pesticide intermediate sewage treatment is characterized by comprising an anaerobic tower, a water inlet pipe and a return pipe, wherein the water inlet pipe is positioned at the top end of the anaerobic tower, and the return pipe is positioned at the top outside the anaerobic tower;

a water distribution tank is arranged at the top end of the anaerobic tower, and one end of a water inlet pipe is connected with the water distribution tank;

an overflow weir is arranged at the top inside the anaerobic tower, a three-phase separator is arranged at the bottom of the overflow weir, one end of a return pipe is connected with the overflow weir, the other end of the return pipe is connected with the water distribution tank, and a submersible sewage pump is arranged on the return pipe;

and the water inlet pipe and the return pipe are both provided with a flow meter and a control valve, and sewage in the water inlet pipe and the water outlet of the return pipe enter the water distribution tank according to the volume ratio of 1 (2-3).

2. An anaerobic reactor according to claim 1, wherein the water distribution trough is disposed one meter above the weir.

3. The anaerobic reactor according to claim 1, wherein the water distribution system comprises a main water distribution pipe and a plurality of branch water distribution pipes, the main water distribution pipe and the branch water distribution pipes are parallel to the bottom surface of the anaerobic tower, the branch water distribution pipes are uniformly distributed on two sides of the main water distribution pipe, and the pipes are perpendicular to the main water distribution pipe.

4. An anaerobic reactor according to claim 1, wherein the three-phase separator divides the anaerobic tower into a sludge reaction zone and a gas chamber, the volume of the gas chamber being less than the volume of the sludge reaction zone.

5. An anaerobic reactor according to claim 4, wherein the three-phase separator comprises a plurality of long triangular groove-shaped structures arranged at intervals in a staggered manner, and the longitudinal cross-sectional shapes of the long triangular groove-shaped structures are triangles which are open towards the bottom of the anaerobic tower and gradually decrease upwards.

6. An anaerobic reactor according to claim 4, characterized in that the sludge reaction zone comprises, from bottom to top, a sludge settling zone, a mixing reaction zone and a refracting zone, the height of the mixing reaction zone being greater than the height of the refracting zone being greater than the height of the sludge settling zone.

7. An anaerobic reactor according to claim 4, wherein the gas chamber is located at the top of the three-phase separator, and gas-guide tubes are arranged on the side wall of the anaerobic tower where the gas chamber is located.

8. An anaerobic reactor according to any one of claims 1 to 7, characterized in that a guard rail is mounted to the top of the anaerobic tower.