CN-224226815-U - Anaerobic sludge reflux device

CN224226815UCN 224226815 UCN224226815 UCN 224226815UCN-224226815-U

Abstract

The utility model discloses an anaerobic sludge reflux device which comprises an up-flow anaerobic reactor, a three-phase separator, a water outlet pipe, a water outlet reflux device, an internal reflux device and a sludge reflux device, wherein the three-phase separator is arranged at the upper end of the inside of the up-flow anaerobic reactor, the water outlet pipe is connected to the upper end of one side of the up-flow anaerobic reactor, the water outlet reflux device is arranged at one end of the up-flow anaerobic reactor, the internal reflux device is arranged in the up-flow anaerobic reactor, and the sludge reflux device is arranged at the other end of the up-flow anaerobic reactor. Compared with the prior art, the utility model has the advantages that the utility model can respectively reflux the effluent and the internal mixed liquid of the upflow anaerobic reactor, the reflux mode is flexible, the defects of the prior reflux device are improved, and the excessive sludge can be refluxed into the upflow anaerobic reactor through the sludge reflux pipe, so that the sustainable use of anaerobic bacteria in the device is ensured, and the loss is avoided.

Inventors

WEI XIAOMING
SONG HONGYAN
CHEN MUHAN
LUO HONGMEI

Assignees

北京辉达环保科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250604

Claims (4)

1. An anaerobic sludge recirculation device, comprising: the anaerobic reactor comprises an upflow anaerobic reactor (1), wherein a three-phase separator (2) is arranged at the upper end inside the upflow anaerobic reactor (1); The water outlet pipe (3), the water outlet pipe (3) is connected to one side upper end of the upflow anaerobic reactor (1), and one side lower end of the upflow anaerobic reactor (1) is connected with a water inlet pipe (301); the water outlet reflux device (4), the water outlet reflux device (4) is arranged at one end of the upflow anaerobic reactor (1), the water outlet reflux device (4) comprises a water outlet reflux pipe (401), one end of the water outlet reflux pipe (401) is connected with a water outlet pipe (3), the other end of the water outlet reflux pipe (401) is connected with a water outlet reflux pump (402), and an output pipeline of the water outlet reflux pump (402) is connected to the water inlet pipe (301); The internal reflux device (5) is arranged inside the upflow anaerobic reactor (1), the internal reflux device (5) comprises an internal reflux suction branch pipe (501) and an internal reflux main pipe (502) which are arranged below the three-phase separator (2), one end of the internal reflux main pipe (502) extends out of the upflow anaerobic reactor (1), and the end part of the internal reflux main pipe is connected with an internal reflux pump (503); Sludge reflux unit (6), sludge reflux unit (6) are located the upflow anaerobic reactor (1) other end, sludge reflux unit (6) are including locating the mud house steward (602) of the inside bottom of upflow anaerobic reactor (1), mud house steward (602) one end stretches out upflow anaerobic reactor (1) and end connection have sludge dewatering device (603), sludge dewatering device (603) one end is equipped with anaerobic sludge concentration jar (604), anaerobic sludge concentration jar (604) bottom is connected with sludge return pipe (606), sludge return pipe (606) one end intercommunication is in upflow anaerobic reactor (1) one end middle part, interior backwash pump (503) output pipeline is connected on mud house steward (602).
2. An anaerobic sludge recirculation device according to claim 1, wherein the output pipe is provided with a water outlet recirculation flow meter (403).
3. The anaerobic sludge recirculation device according to claim 1, wherein the internal recirculation suction branch pipe (501) is communicated with the internal recirculation main pipe (502), an internal recirculation flow meter (504) is arranged on an output pipeline of the internal recirculation pump (503), and valves are arranged on the output pipeline of the internal recirculation pump (503) and the sludge discharge main pipe (602).
4. The anaerobic sludge recirculation device according to claim 1, wherein the sludge discharge main pipe (602) is communicated with a sludge discharge branch pipe (601), a sewage drain pipe (608) is connected to the bottom of the sludge dewatering device (603), the sludge dewatering device (603) and the anaerobic sludge concentration tank (604) are connected with a dry sludge conveying pipe, a screw pump I (605) is arranged on the dry sludge conveying pipe, and a screw pump II (607) is arranged on the sludge return pipe (606).

Description

Anaerobic sludge reflux device Technical Field The utility model relates to the technical field of sewage treatment, in particular to an anaerobic sludge reflux device. Background The waste water discharged and amplified by industries such as food, biology, chemical industry and the like belongs to high-concentration organic waste water, the aim of treatment is difficult to achieve by using conventional materialization and biochemical treatment, a series of problems of large investment, difficult operation and management, high operation cost and the like exist, and along with the continuous deep scientific research, anaerobic is used as a low-energy waste water treatment technology, and plays an increasingly large role in the field of waste water treatment. The key of the design of the anaerobic reactor is how to form uniform and stable hydraulic conditions in the tank body, the upward flow of the mixed liquor and the severe disturbance of the marsh gas lead the sludge to be in an expanded and fluidized state, the surface contact of the sludge and the water is enhanced, and the sludge keeps high activity. In order to better control the rising flow rate of the mud-water mixture of the anaerobic reactor and maintain the activity of the anaerobic bacteria ratio, the reactor generally needs to be provided with a reflux device, but the prior art still has the defects: (1) The common reflux device of the reactor in the prior art only carries out reflux through one pipeline, and the water outlet is arranged at the upper half part of the device, so that the problems of uneven reflux, easy blockage and the like exist, and the treatment efficiency of the reactor is greatly influenced. (2) After the sludge in the reactor in the prior art is too much, organic matters and anaerobic fermentation strains of an anaerobic system are drained periodically, so that the activity of the anaerobic sludge is reduced easily, the continuous operation of the anaerobic is influenced, and the anaerobic sludge is transported and buried externally, so that the cost is high. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. Disclosure of utility model The utility model aims to overcome the defects and provide an anaerobic sludge reflux device. In order to solve the technical problems, the technical scheme provided by the utility model is that the anaerobic sludge reflux device comprises: The three-phase separator is arranged at the upper end inside the upflow anaerobic reactor; The water outlet pipe is connected to the upper end of one side of the upflow anaerobic reactor, and the lower end of one side of the upflow anaerobic reactor is connected with a water inlet pipe; the water outlet reflux device is arranged at one end of the upflow anaerobic reactor and comprises a water outlet reflux pipe, one end of the water outlet reflux pipe is connected with a water outlet pipe, the other end of the water outlet reflux pipe is connected with a water outlet reflux pump, and an output pipeline of the water outlet reflux pump is connected to the water inlet pipe; the internal reflux device is arranged in the upflow anaerobic reactor and comprises an internal reflux suction branch pipe and an internal reflux main pipe which are arranged below the three-phase separator, one end of the internal reflux main pipe extends out of the upflow anaerobic reactor, and the end part of the internal reflux main pipe is connected with an internal reflux pump; The sludge reflux device is arranged at the other end of the up-flow anaerobic reactor and comprises a sludge discharging main pipe arranged at the inner bottom of the up-flow anaerobic reactor, one end of the sludge discharging main pipe extends out of the up-flow anaerobic reactor and is connected with a sludge dewatering device, one end of the sludge dewatering device is provided with an anaerobic sludge concentrating tank, the bottom of the anaerobic sludge concentrating tank is connected with a sludge reflux pipe, one end of the sludge reflux pipe is communicated with the middle part of one end of the up-flow anaerobic reactor, and an output pipeline of the internal reflux pump is connected to the sludge discharging main pipe. Further, a water outlet reflux flowmeter is arranged on the output pipeline. Further, the internal reflux suction branch pipe is communicated with the internal reflux main pipe, an internal reflux flowmeter is arranged on the output pipeline of the internal reflux pump, and valves are arranged on the output pipeline of the internal reflux pump and the mud discharging main pipe. Further, a sludge discharge branch pipe is communicated with the sludge discharge main pipe, a sewage discharge pipe is connected to the bottom of t