CN220467717U - Anaerobic reactor for treating kitchen slurry - Google Patents

Abstract

The utility model discloses an anaerobic reactor for treating kitchen slurry, which comprises an anaerobic reaction tank, wherein the lower part of the side wall of the anaerobic reaction tank is provided with a slurry inlet, a slurry return opening and two first stirrers which are correspondingly positioned above the slurry inlet and the slurry return opening, the upper part of the side wall is provided with an overflow outlet, the overflow outlet is communicated with a liquid inlet on the side wall of a separation tank, the side wall of the separation tank is also provided with a water outlet positioned above the liquid inlet, a second stirrer and a slurry outlet which are positioned below the liquid inlet, an MBR (membrane biological reactor) membrane assembly and a microporous aeration coil pipe are arranged inside the separation tank from top to bottom, the water outlet is connected with a water outlet pipeline through a water production pump, the slurry outlet is sequentially communicated with the slurry return opening after passing through a sludge return pump and a bag type filter group, the tops of the anaerobic reaction tank and the separation tank are respectively communicated with the gas inlet and the water outlet of a gas-water separator, the gas outlets of the two gas-water separators are jointly communicated with a biogas storage bag, and the outlet of the storage bag is communicated with the inlet of the microporous aeration coil pipe through a booster fan.

Description

Anaerobic reactor for treating kitchen slurry

Technical Field

The utility model relates to the technical field of kitchen waste treatment, in particular to an anaerobic reactor for treating kitchen slurry.

Background

The Chinese patent database discloses an utility model patent with publication number CN211311472U and name of a biogas-producing anaerobic reactor for treating kitchen slurry, and specifically discloses: a biogas-producing anaerobic reactor for treating kitchen slurry comprises a reactor tank body, and a biogas collecting system and a silt collecting system which are arranged on the reactor tank body; the method is characterized in that: a first circulating heat exchange system and a second circulating heat exchange system are also arranged on the reactor tank body; the first circulating heat exchange system comprises a discharging system, a heat exchange system and a feeding system, wherein the discharging system comprises a blanking barrel, one end of the blanking barrel is connected with the top of the reactor tank body, and the other end of the blanking barrel is sequentially connected with the heat exchange system and the feeding system; the second circulating heat exchange system comprises a middle upper discharging pipeline, a tank top spraying feeding pipeline and a tank bottom annular feeding pipeline, wherein the middle upper discharging pipeline is connected with the middle upper part of the reactor tank body, the tank top spraying feeding pipeline and the tank bottom annular feeding pipeline are connected in parallel on the middle upper discharging pipeline, the tank top spraying feeding pipeline is connected with the top of the tank body, and the tank bottom annular feeding pipeline is connected with the bottom of the tank body. Although this patent solves the occurrence of the phenomena of scum, crust, blockage, unsmooth gas overflow and short flow, the effluent contains a large amount of anaerobic sludge and organic solids, which results in a large load of back-end treatment, and the need of re-inoculation and purchase of anaerobic sludge to ensure stable operation and high sewage treatment cost.

Disclosure of Invention

Therefore, an object of the present utility model is to provide an anaerobic reactor for treating kitchen slurry, which can reduce anaerobic sludge loss and back-end treatment load, so as to solve the above-mentioned problems of the related art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an anaerobic reactor for handling kitchen thick liquids, includes the anaerobic reaction tank, the lateral wall lower part of anaerobic reaction tank be equipped with the inlet, with the back mud mouth and two corresponding being located that the inlet is relative back mud mouth is equipped with the overflow mouth in the upper portion of lateral wall the first agitator of inlet with back mud mouth top, the overflow mouth is linked together with the inlet on the separator tank lateral wall through the mode of flowing automatically, still be equipped with on the lateral wall of separator tank and be located in proper order the delivery port of inlet top and the second agitator and the outlet of inlet below, inside top-down erects and is located the inlet with MBR membrane module and micropore aeration coil pipe between the delivery port, the delivery port is linked together through producing water pump and outlet pipe way, the outlet behind mud mouth in proper order through mud reflux pump and the group of filters, the top of anaerobic reaction tank with the delivery port of separator tank is linked together with the delivery port and the water separator of a gas-water separator respectively, two gas-separator are located on the lateral wall of separator tank still the delivery port is linked together with the inlet of a methane storage bag, two gas-separator bag, the inlet, the same pump, the equal inlet of methane-water pump, the equal pump and the pressure booster are linked together.

In one embodiment of the utility model, pressure sensors are arranged between the sludge reflux pump and the bag filter, between the booster fan and the microporous aeration coil pipe and between the water outlet and the water producing pump, electromagnetic flow meters are arranged between the bag filter and the sludge return port and between the water producing pump and the water outlet pipeline, and the electromagnetic flow meters and the pressure sensors are connected with the controller.

In one embodiment of the utility model, the bag filter group consists of 2-4 bag filters, and inlets of all the bag filters are connected in parallel and then communicated with an outlet of the sludge reflux pump, and outlets of all the bag filters are connected in parallel and then communicated with the sludge return port.

In one embodiment of the utility model, the first stirrer and the second stirrer are each disposed inclined downward by 45 ° in the horizontal direction.

In one embodiment of the utility model, the pore size of the MBR membrane module is 0.03um to 0.1um, and the pore size of the bag filter set is 500um to 1500um.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. according to the utility model, anaerobic sludge and organic solids are trapped by the built-in MBR membrane module below the water outlet of the separating tank, and the sludge outlet of the separating tank below the MBR membrane module is communicated with the sludge return port of the anaerobic reaction tank after passing through the sludge return pump and the bag filter group in sequence, so that the trapped anaerobic sludge returns to the anaerobic reaction tank, and the organic solids are removed by the bag filter group, thereby greatly reducing the loss of the anaerobic sludge, saving the cost of re-inoculating the sludge, and reducing the load of rear-end treatment.

2. According to the utility model, the tops of the anaerobic reaction tank and the separation tank are respectively communicated with the air inlet and the water outlet of one gas-water separator, the air outlets of the two gas-water separators are jointly communicated with the inlet of the biogas storage bag, and the inlet is arranged below the MBR membrane component in the separation tank and communicated with the outlet of the biogas storage bag through the booster fan, so that the MBR membrane component can be self-cleaned by utilizing biogas generated in the reaction process, the recycling of resources is realized, the cost is saved, the convenience in use is greatly improved, and the running stability is ensured.

3. According to the utility model, the pressure sensors are arranged between the sludge reflux pump and the bag filter, between the booster fan and the microporous aeration coil pipe and between the water outlet and the water producing pump, and the electromagnetic flow meters are arranged between the bag filter and the sludge reflux port and between the water producing pump and the water outlet pipeline, and are connected with the controller, so that the running flow can be monitored in real time, the states of the bag filter and the MBR membrane assembly are obtained, and the stability of automatic running is ensured.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

FIG. 1 is a schematic diagram of the structure of the present utility model;

description of the specification reference numerals: 1. the anaerobic reaction tank 2, the first stirrer 3, the separation tank 4, the second stirrer 5, the MBR membrane module 6, the microporous aeration coil pipe 7, the water producing pump 8, the water outlet pipeline 9, the sludge reflux pump 10, the bag filter group 11, the gas-water separator 12, the biogas storage bag 13, the booster fan 14, the pressure sensor 15 and the electromagnetic flowmeter.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

With respect to the foregoing and other features, aspects and advantages of the utility model, they will become apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings. The directional terms mentioned in the following embodiments are, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for the purpose of illustration and is not intended to be limiting of the utility model, and furthermore, like reference numerals refer to like elements throughout the embodiments.

Referring to fig. 1, an anaerobic reactor for treating kitchen slurry comprises an anaerobic reaction tank 1, wherein a slurry inlet, a slurry return port opposite to the slurry inlet, a first stirrer 2 arranged above the slurry return port and two corresponding water return ports are arranged at the lower part of the side wall of the anaerobic reaction tank 1, an overflow port is arranged at the upper part of the side wall of the anaerobic reaction tank, the overflow port is communicated with the liquid inlet on the side wall of a separation tank 3 in a self-flowing mode, a water outlet arranged above the liquid inlet, a second stirrer 4 and a slurry outlet which are sequentially arranged below the liquid inlet, an MBR membrane assembly 5 and a microporous aeration coil 6 which are arranged from top to bottom are arranged between the liquid inlet and the water outlet, the water outlet is connected with a water outlet pipeline 8 through a water producing pump 7, the slurry outlet is sequentially communicated with the slurry return port after passing through a sludge reflux pump 9 and a bag filter group 10, the top of the anaerobic reaction tank 1 and the water separation tank 3 are respectively communicated with the liquid inlet 11 of the separation tank, a water inlet of the first stirrer 11 and a water outlet of the separation tank 1, a water inlet of the second stirrer 11 and a water inlet of the water separator group 13 are respectively communicated with a water inlet of the anaerobic reaction tank 1, and a water inlet of the water separator group 13, and a water inlet of the sewage separator group 13 are respectively communicated with a water inlet of the sewage pump 11, and a water inlet of the sewage pump 13. When the anaerobic reactor is required to be treated, kitchen slurry is introduced into a slurry inlet, after the kitchen slurry enters the anaerobic reactor 1 from the slurry inlet, the kitchen slurry is uniformly stirred by the first stirrer 2, anaerobic fermentation for corresponding time is started, then the kitchen slurry automatically flows into the separating tank 3 from an overflow outlet, after the kitchen slurry enters the separating tank 3, anaerobic sludge and organic solids in wastewater are trapped in the separating tank 3 below the kitchen slurry by the MBR membrane assembly 5 under the action of the water producing pump 7, water for removing the anaerobic sludge and the organic solids is output to the water outlet pipeline 8 from a water outlet, the water is sent to the rear-end processing unit from the water outlet pipeline 8, in the process, the trapped anaerobic sludge and the organic solids are removed by the bag filter group 10 under the action of the sludge reflux pump 9 in the process of being sent back to the anaerobic reactor 1 from the sludge reflux pump 9, and the anaerobic sludge is returned to the anaerobic reactor 1 to continue to participate in the reaction; meanwhile, biogas generated in the treatment process firstly enters a biogas storage bag 12 through a gas-water separator 11, is pressurized by a booster fan 13 and then is conveyed to a microporous aeration coil 6 to carry out aeration cleaning on the MBR membrane assembly 5.

The first stirrer 2 and the second stirrer 4 are both arranged at an angle of 45 degrees along the horizontal direction, the aperture of the MBR membrane component 5 is 0.03um-0.1um, and the aperture of the bag filter group 10 is 500um-1500um.

Pressure sensors 14 are arranged between the sludge reflux pump 9 and the bag filter, between the booster fan 13 and the microporous aeration coil pipe 6 and between the water outlet and the water producing pump 7, electromagnetic flow meters 15 are arranged between the bag filter and the sludge reflux port and between the water producing pump 7 and the water outlet pipeline 8, and the electromagnetic flow meters 15 and the pressure sensors 14 are connected with the controller. The arrangement is that the running process can be monitored in real time, the states of the bag filter and the MBR membrane module 5 are known, and the stability of automatic running is ensured.

The bag filter group 10 is composed of 2-4 bag filter groups 10, and inlets of all the bag filters are connected in parallel and then communicated with an outlet of the sludge reflux pump 9, and outlets of all the bag filters are connected in parallel and then communicated with the sludge return port. By the arrangement, when the bag filter is damaged for overhauling, other bag filters can still be used continuously, and the continuous operation of the anaerobic reactor is ensured.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (5)

1. The anaerobic reactor for treating kitchen slurry is characterized by comprising an anaerobic reaction tank, wherein a slurry inlet, a slurry return port opposite to the slurry inlet, two slurry return ports corresponding to the slurry inlet and two slurry return ports are arranged at the lower part of the side wall of the anaerobic reaction tank, an overflow outlet is arranged at the upper part of the side wall of the anaerobic reaction tank, the overflow outlet is communicated with the liquid inlet on the side wall of the separation tank in a self-flowing mode, a water outlet above the liquid inlet, a second stirrer and a slurry outlet which are sequentially arranged below the liquid inlet, an MBR (membrane assembly) and a microporous aeration coil pipe are arranged inside the anaerobic reaction tank from top to bottom, the water outlet is connected with a water outlet pipeline through a water producing pump, the slurry outlet is sequentially communicated with the slurry return port after passing through a sludge reflux pump and a bag filter group, the tops of the anaerobic reaction tank and the separation tank are respectively communicated with the liquid inlet and the water outlet of a gas-water separator, the two gas-water separators are also arranged on the side wall of the separation tank, the second stirrer and the slurry inlet and the microporous aeration coil pipe are sequentially arranged below the liquid inlet and the water outlet, the water inlet of the anaerobic reaction tank and the water pump are communicated with the water inlet of the methane-separator, and the water inlet of the methane-circulating reactor, and the methane-circulating pump are communicated with the methane-circulating pump.

2. The anaerobic reactor for treating kitchen slurry according to claim 1, wherein pressure sensors are respectively arranged between the sludge reflux pump and the bag filter, between the booster fan and the microporous aeration coil pipe and between the water outlet and the water producing pump, electromagnetic flow meters are respectively arranged between the bag filter and the sludge return port and between the water producing pump and the water outlet pipeline, and the electromagnetic flow meters and the pressure sensors are respectively connected with the controller.

3. Anaerobic reactor for treating kitchen slurry according to claim 1, wherein said group of bag filters consists of 2-4 bag filters, all inlets of said bag filters being connected in parallel to the outlet of said sludge return pump and outlets being connected in parallel to said sludge return port.

4. Anaerobic reactor for treating kitchen slurry according to claim 1, wherein said first stirrer and said second stirrer are each arranged inclined 45 ° downwards in the horizontal direction.

5. The anaerobic reactor for treating kitchen slurry according to claim 1, wherein the pore size of said MBR membrane module is 0.03um-0.1um, and the pore size of said bag filter group is 500um-1500um.