Novel anaerobic internal reflux water distribution device

Abstract

The utility model discloses a novel anaerobic internal reflux water distribution device, which particularly relates to the technical field of reflux water distribution of anaerobic reactors and comprises an anaerobic reactor which comprises a wastewater inlet pipe, a double-layer double-flow water distributor, a reflux pipe, a micro-power internal reflux device and a variable-frequency controller. The double-layer double-flow water distributor is arranged at the central position of the inner bottom of the anaerobic reactor, the wastewater inlet pipe is fixedly communicated with the double-layer double-flow water distributor, the return pipe is arranged above the double-layer double-flow water distributor, and the micro-power inner return device is arranged above the return pipe. The utility model has the advantages of simple structure, fewer pipelines, convenience in installation, no blockage, no need of shutdown emptying maintenance, high-flow low-energy-consumption water distribution, uniform distribution, small water quality fluctuation, sufficient mud-water mixing, adjustable flow and simplicity and convenience in operation, and achieves the purpose of improving the treatment efficiency of the anaerobic reactor. The problems that an existing anaerobic reactor is uneven in backflow water distribution, large in number of dead zones, large in energy consumption, uncontrollable in flow and flow velocity, complex in structure, prone to blockage and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of anaerobic reactor reflux water distribution, in particular to a novel anaerobic internal reflux water distribution device. Background Art

[0002] At present, high-concentration organic wastewater is mainly treated by anaerobic treatment, among which UASB, IC, and EGSB are the main anaerobic reactors. Anaerobic treatment mainly uses anaerobic microorganisms to decompose organic matter in wastewater to produce biogas to achieve purification. The treatment efficiency of the anaerobic reactor is related to the number of microorganisms, pH, pollutant concentration, temperature, mixing degree, etc. Among them, the degree of contact and mixing of mud and water, rising flow rate, and water quality stability are important factors. Due to the characteristics of high organic matter and small water volume in organic wastewater, there is a small amount of water, which is difficult to distribute evenly, and the low flow rate makes it impossible for mud and water to mix and contact, thus affecting the efficiency and effect of anaerobic treatment. The main solution is to use the effluent from the anaerobic reactor and then return it to dilute the raw water and increase the flow rate to achieve uniform water distribution.

[0003] At present, the reflow of mainstream anaerobic reactors is divided into two categories: EGSB reactor with external reflow and IC reactor with internal reflow. Among them, external reflow water distribution adopts the installation of a large flow water pump and a water collection and distribution pipe combination outside the anaerobic reactor, and point-to-point high resistance water distribution; Disadvantages: high energy consumption, large footprint, complex structure, easy blockage of water distribution pipe holes, and the need to shut down and empty the machine to clear the blockage and restore the water distribution. Internal reflow water distribution adopts the installation of a gas lift device, a gas-water separation tank, and a gas-water pipeline combination inside the anaerobic reactor, and a reflector cone water distribution; Disadvantages: complex structure, the reflux volume is affected by the biogas production and gas lift efficiency, the flow cannot be adjusted, the stability is poor, and the startup time is long.

[0004] Therefore, we made improvements and proposed a new anaerobic internal reflow water distribution device. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a novel anaerobic internal reflux water distribution device, comprising an anaerobic reactor, wherein the anaerobic reactor comprises a wastewater inlet pipe, a double-layer double-flow water distributor, a reflux pipe, a micro-power internal reflux device and a frequency conversion controller, wherein the double-layer double-flow water distributor is arranged at the center of the inner bottom of the anaerobic reactor, the wastewater inlet pipe is fixedly connected with the double-layer double-flow water distributor, the reflux pipe is arranged above the double-layer double-flow water distributor, and the micro-power internal reflux device is arranged above the reflux pipe.

[0007] As a preferred technical solution of the utility model, the wastewater inlet pipe and the double-layer double-flow water distributor are bolted via a flange, and the double-layer double-flow water distributor is provided with a double-layer double-flow water distributor wastewater inlet, and the raw water enters the inlet of the double-layer double-flow water distributor from the bottom side of the anaerobic reactor and the horizontal tangent direction, and the double-layer double-flow water distributor is provided with an upper nozzle outlet of the double-layer double-flow water distributor and a lower nozzle outlet of the double-layer double-flow water distributor.

[0008] As a preferred technical solution of the utility model, the reflux pipe and the double-layer double-flow water distributor are bolted via a flange, and the double-layer double-flow water distributor is provided with a reflux liquid inlet of the double-layer double-flow water distributor. The reflux liquid enters the reflux liquid inlet of the double-layer double-flow water distributor vertically downward from the water outlet of the micro-power internal reflux device.

[0009] As an optimal technical solution of the utility model, the upper and lower ends of the micro-power internal reflux device are connected to the reflux pipe by flange bolts, the upper end of the micro-power internal reflux device is the reflux liquid inlet of the micro-power internal reflux device, the lower end of the micro-power internal reflux device is the reflux liquid outlet of the micro-power internal reflux device, and the micro-power internal reflux device is vertically arranged to the horizontal plane of the double-layer double-flow water distributor.

[0010] As a preferred technical solution of the utility model, the top of the double-layer double-flow water distributor is bolted to the return pipe via a flange, the bottom of the double-layer double-flow water distributor is bolted and fixed to the bottom plate of the anaerobic reactor, and the tangent position of the bottom side of the double-layer double-flow water distributor is bolted to the wastewater inlet pipe via a flange.

[0011] As a preferred technical solution of the utility model, the power component of the micro-power internal recirculator adopts a variable frequency motor and is equipped with a variable frequency controller. The micro-power internal recirculator is installed in the middle center of the anaerobic reactor.

[0012] The beneficial effects of the utility model are as follows: the new anaerobic internal reflux water distribution device has a simple structure, few pipes, easy installation, no blockage, no need to shut down for emptying and maintenance, large flow and low energy consumption water distribution, uniform distribution, small water quality fluctuation, sufficient mud and water mixing, adjustable flow, simple operation, and improves the treatment efficiency of the anaerobic reactor. It solves the problems of uneven reflux water distribution, insufficient mud and water mixing, many dead zones, high energy consumption, unadjustable flow rate, complex structure, and easy blockage in the existing anaerobic reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1This is a working principle diagram of a new type of anaerobic internal reflow water distribution device;

[0015] Figure 2 It is a cross-sectional diagram of a double-layer double-flow water distributor of a new type of anaerobic internal recirculation water distribution device;

[0016] Figure 3 This is a cross-sectional diagram of a micro-powered internal reflow device of a new type of anaerobic internal reflow water distribution device.

[0017] In the figure: 1. Wastewater inlet pipe; 2. Double-layer double-flow water distributor; 3. Return pipe; 4. Micro-power internal reflux device; a. Wastewater inlet of double-layer double-flow water distributor; b. Return liquid inlet of double-layer double-flow water distributor; c. Upper nozzle outlet of double-layer double-flow water distributor; d. Lower nozzle outlet of double-layer double-flow water distributor; e. Return liquid inlet of micro-power internal reflux device; f. Return liquid outlet of micro-power internal reflux device. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example: Figures 1 to 3 As shown, the utility model is a novel anaerobic internal reflow water distribution device, including an anaerobic reactor, the anaerobic reactor includes a wastewater inlet pipe 1, a double-layer double-flow water distributor 2, a reflow pipe 3, a micro-power internal reflow device 4 and a frequency conversion controller, the double-layer double-flow water distributor 2 is arranged at the center of the inner bottom of the anaerobic reactor, the wastewater inlet pipe 1 and the double-layer double-flow water distributor 2 are fixedly connected, the reflow pipe 3 is arranged above the double-layer double-flow water distributor 2, and the micro-power internal reflow device 4 is arranged above the reflow pipe 3.

[0020] Wastewater and reflux liquid are mixed once in the inner cavity of the double-layer double-flow water distributor 2, and then enter the anaerobic reactor sludge bed through the nozzle of the double-layer double-flow water distributor 2. The size of the reflux volume is adjusted by the frequency converter to achieve the flow regulation of the micro-power internal reflux device to meet the different rising speeds of the anaerobic reactor, so that the rising flow rate of the anaerobic reactor sludge bed is maintained at 1-3m / h.

[0021] The wastewater inlet pipe 1 is bolted to the double-layer double-flow water distributor 2 through a flange. The double-layer double-flow water distributor 2 is provided with a double-layer double-flow water distributor wastewater inlet a. The raw water enters the inlet of the double-layer double-flow water distributor 2 from the bottom side of the anaerobic reactor and the horizontal tangent direction. The double-layer double-flow water distributor 2 is provided with a double-layer double-flow water distributor upper nozzle outlet c and a double-layer double-flow water distributor lower nozzle outlet d.

[0022] By setting the upper nozzle outlet c of the double-layer double-flow water distributor and the lower nozzle outlet d of the double-layer double-flow water distributor, two circles of radial water distribution can be better achieved, and the mixed liquid power is used to fully contact and mix with the sludge, and the sludge is kept in a state of expansion, suspension and non-sedimentation, so that the rising flow rate of the sludge bed of the anaerobic reactor is maintained at 2-4m / h, thereby making the water distribution efficiency more efficient.

[0023] The reflux pipe 3 is bolted to the double-layer double-flow water distributor 2 through a flange. The double-layer double-flow water distributor 2 is provided with a double-layer double-flow water distributor reflux liquid inlet b. The reflux liquid enters the double-layer double-flow water distributor reflux liquid inlet b vertically downward from the outlet of the micro-power internal reflux device 4.

[0024] By adopting the method of vertically downwardly entering the reflux liquid inlet b of the double-layer double-flow water distributor from the outlet of the micro-power internal reflux device 4, it can be further ensured that the flow direction of the reflux liquid vertically downwardly enters the reflux liquid inlet b of the double-layer double-flow water distributor.

[0025] The upper and lower ends of the micro-power internal reflux device 4 are connected to the reflux pipe 3 by flange bolts. The upper end of the micro-power internal reflux device 4 is the reflux liquid inlet e of the micro-power internal reflux device, and the lower end of the micro-power internal reflux device 4 is the reflux liquid outlet f of the micro-power internal reflux device. The micro-power internal reflux device 4 is vertically arranged to the horizontal plane of the double-layer double-flow water distributor 2.

[0026] The top of the double-layer double-flow water distributor 2 is bolted to the return pipe 3 via a flange, the bottom of the double-layer double-flow water distributor 2 is bolted to the bottom plate of the anaerobic reactor, and the bottom side tangent of the double-layer double-flow water distributor 2 is bolted to the wastewater inlet pipe 1 via a flange.

[0027] The power component of the micro-power internal reflow device 4 adopts a variable frequency motor and is equipped with a variable frequency controller. The micro-power internal reflow device 4 is installed in the middle center of the anaerobic reactor.

[0028] The frequency conversion device can be used to adjust the frequency of the reflux liquid flow rate, where the flow rate adjustment range is 1 to 10 times the raw water flow rate, meeting the rising flow rate of the anaerobic reactor.

[0029] During operation, the wastewater is pressurized by the lifting pump and enters the wastewater inlet a of the double-layer double-flow water distributor along the tangent to the inner cavity of the double-layer double-flow water distributor 2. The reflux liquid enters the reflux pipe 3 from the bottom of the three-phase separator, and then is pressurized by the micro-power internal reflux device 4, and then enters the double-layer double-flow water distributor 2 downward. The wastewater and the reflux liquid are mixed in the inner cavity of the double-layer double-flow water distributor 2, and then flow out through the nozzles of the upper nozzle outlet c of the double-layer double-flow water distributor and the lower nozzle outlet d of the double-layer double-flow water distributor, and distribute water in two circles radially, and enter the sludge bed at the bottom of the anaerobic reactor. The mixed liquid power is used to fully contact and mix with the sludge, and the sludge is in a state of expansion, suspension and non-sedimentation. The rising flow rate requirements of each stage of the anaerobic reactor are different. Through the frequency conversion controller, the micro-power internal reflux device 4 is frequency-controlled and speed-changed to adjust the flow rate to form different rising flow rates to meet the different working conditions of the anaerobic reactor.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel anaerobic internal reflow water distribution device, comprising an anaerobic reactor, characterized in that: The anaerobic reactor comprises a wastewater inlet pipe (1), a double-layer double-flow water distributor (2), a return pipe (3), a micro-power internal return device (4) and a frequency conversion controller. The double-layer double-flow water distributor (2) is arranged at the center of the inner bottom of the anaerobic reactor. The wastewater inlet pipe (1) and the double-layer double-flow water distributor (2) are fixedly connected. The return pipe (3) is arranged above the double-layer double-flow water distributor (2). The micro-power internal return device (4) is arranged above the return pipe (3).

2. A novel anaerobic internal reflow water distribution device according to claim 1, characterized in that: The wastewater inlet pipe (1) is bolted to the double-layer double-flow water distributor (2) via a flange. The double-layer double-flow water distributor (2) is provided with a wastewater inlet (a) of the double-layer double-flow water distributor. Raw water enters the inlet of the double-layer double-flow water distributor (2) from the bottom side of the anaerobic reactor and in the horizontal tangent direction. The double-layer double-flow water distributor (2) is provided with an upper nozzle outlet (c) of the double-layer double-flow water distributor and a lower nozzle outlet (d) of the double-layer double-flow water distributor.

3. A novel anaerobic internal reflow water distribution device according to claim 1, characterized in that: The reflux pipe (3) is bolted to the double-layer double-flow water distributor (2) via a flange. The double-layer double-flow water distributor (2) is provided with a reflux liquid inlet (b) of the double-layer double-flow water distributor. The reflux liquid vertically flows downward from the outlet of the micro-power internal reflux device (4) into the reflux liquid inlet (b) of the double-layer double-flow water distributor.

4. A novel anaerobic internal reflow water distribution device according to claim 1, characterized in that: The upper and lower ends of the micro-power internal reflux device (4) are both connected to the reflux pipe (3) by flange bolts; the upper end of the micro-power internal reflux device (4) is a reflux liquid inlet (e) of the micro-power internal reflux device; the lower end of the micro-power internal reflux device (4) is a reflux liquid outlet (f) of the micro-power internal reflux device; and the micro-power internal reflux device (4) is arranged vertically to the horizontal plane of the double-layer double-flow water distributor (2).

5. A novel anaerobic internal reflow water distribution device according to claim 4, characterized in that: The top of the double-layer double-flow water distributor (2) is bolted to the return pipe (3) via a flange, the bottom of the double-layer double-flow water distributor (2) is bolted to the bottom plate of the anaerobic reactor, and the tangent position of the bottom side of the double-layer double-flow water distributor (2) is bolted to the wastewater inlet pipe (1) via a flange.

6. The novel anaerobic internal reflow water distribution device according to claim 1 is characterized in that: The power component of the micro-power internal recirculator (4) adopts a variable frequency motor and is equipped with a variable frequency controller. The micro-power internal recirculator (4) is installed at the center of the middle of the anaerobic reactor.

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