Anaerobic reactor effluent pipe fouling cleaning device

Abstract

The utility model discloses anaerobic reactor water outlet pipe scale cleaning device, including water outlet pipe, with the water outlet pipe intercommunication's cleaning water tank and located in the filter screen unit of cleaning water tank, cleaning water tank one side bottom is connected with the upper side of water outlet pipe one end through the cleaning pipe, and the other side top is connected with the lower side of water outlet pipe other end through the backwater pipe, the cleaning pipe is equipped with the cleaning pump in the place of being close to cleaning water tank, the filter screen unit is located in the cleaning water tank and corresponds with the backwater pipe, the filter screen unit includes detachable filter bag, the utility model discloses anaerobic reactor water outlet pipe can be cleaned and has convenient to use's advantage.

Description

Technical Field

[0001] This utility model relates to the field of anaerobic reactor technology, and in particular to a device for cleaning scale buildup in the effluent pipe of an anaerobic reactor. Background Technology

[0002] During the incineration of municipal solid waste, a certain amount of leachate is generated. This type of wastewater has the following characteristics:

[0003] 1) It has a complex organic composition and contains a large amount of polycyclic aromatic hydrocarbons and other recalcitrant organic compounds;

[0004] 2) COD is as high as 40,000-80,000 mg / L;

[0005] 3) The total nitrogen (TN) in the leachate is generally above 2000 mg / L;

[0006] 4) It has good biochemical properties, with a B / C ratio generally above 0.3.

[0007] Currently, the main methods for treating landfill leachate in the waste-to-energy industry are biological and membrane methods. The biological method mainly uses an anaerobic process combined with a two-stage A / O process. The anaerobic biological treatment uses an anaerobic reactor. This technology has significant advantages such as high treatment efficiency, low operating energy consumption, small amount of residual sludge, and the ability to recover biogas. It has been gradually promoted and applied in the treatment of organic wastewater, especially high-concentration organic wastewater.

[0008] In recent years, anaerobic treatment technology has developed rapidly, resulting in various high-efficiency anaerobic reactors such as UASB and IOC. However, due to the high concentration of impurities and calcium and magnesium ions in municipal solid waste leachate, calcium ions combine with carbonate ions to form calcium carbonate precipitate, while magnesium ions combine with carbonate ions to form magnesium carbonate precipitate. These precipitates easily adhere to the inner wall of the anaerobic inlet pipe, gradually forming scale. When phosphate and ammonium ions are present in the wastewater, under anaerobic conditions, they combine with magnesium ions to form magnesium ammonium phosphate precipitate, commonly known as struvite. This precipitate forms rapidly and is hard, easily accumulating on the inner wall of the pipe, leading to scale buildup.

[0009] Therefore, long-term operation can lead to the accumulation of foreign matter or scale buildup in the outlet pipe, causing blockage of the anaerobic reactor's outlet pipe and affecting the normal use of the anaerobic reactor. Utility Model Content

[0010] The purpose of this invention is to provide a device for cleaning scale buildup in the effluent pipe of an anaerobic reactor. This invention has the advantages of effectively cleaning the effluent pipe of an anaerobic reactor and being easy to use.

[0011] The technical solution of this utility model: a scale cleaning device for the effluent pipe of an anaerobic reactor, comprising an effluent pipe, a cleaning water tank connected to the effluent pipe, and a filter screen unit disposed in the cleaning water tank; the bottom of one side of the cleaning water tank is connected to the top of one end of the effluent pipe via a cleaning pipe, and the top of the other side is connected to the bottom of the other end of the effluent pipe via a return water pipe; a cleaning pump is provided near the cleaning water tank on the cleaning pipe; the filter screen unit is disposed in the cleaning water tank and corresponds to the return water pipe; the filter screen unit includes a detachable filter bag.

[0012] In the aforementioned anaerobic reactor effluent pipe scaling cleaning device, the filter unit includes a mounting frame and a detachable insert plate installed in the mounting frame, and the filter bag is connected to the insert plate; a slot for installing the insert plate is provided on the top of the mounting frame, and through holes corresponding to the return water pipe are provided in the middle of both the mounting frame and the insert plate.

[0013] In the aforementioned anaerobic reactor effluent pipe scaling cleaning device, the mounting frame is provided with locking blocks on both sides above; the insert plate is provided with corresponding locking buckles on both sides.

[0014] In the aforementioned anaerobic reactor effluent pipe scaling cleaning device, a cleaning valve is provided on the cleaning pipe and a return water valve is provided on the return water pipe.

[0015] In the aforementioned anaerobic reactor effluent pipe scaling cleaning device, a drain pipe is provided below the side of the cleaning water tank away from the cleaning pipe; a drain valve and a drain pump are correspondingly provided on the drain pipe.

[0016] In the aforementioned anaerobic reactor effluent pipe scaling cleaning device, the front of the cabinet is provided with a hinged door; the cleaning water tank is equipped with a pH meter.

[0017] Compared with the prior art, this application sets up a cleaning water tank and connects the cleaning water tank and the outlet water pipe to form a circulation path by using a cleaning pipe and a return water pipe. The cleaning pump is used to pump the cleaning liquid in the cleaning water tank into the outlet water pipe for descaling and cleaning. The wastewater after cleaning is returned to the cleaning water tank through the return water pipe, thereby recycling the descaling agent that has not been completely used in the cleaning liquid.

[0018] By installing a removable filter bag inside the cleaning water tank, which corresponds to the return water pipe, solid impurities fall into the filter bag after the sewage flows through it, thus effectively collecting the foreign matter and residue that has been cleaned, making it convenient for centralized cleaning.

[0019] Therefore, this utility model has the advantages of being able to clean the anaerobic reactor outlet pipe and being easy to use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2This is a schematic diagram of the filter unit structure of this utility model.

[0022] The markings in the attached diagram are as follows: 1-Outlet pipe, 11-Front water valve, 12-Rear water valve, 2-Cleaning water tank, 21-Cleaning pipe, 22-Return water pipe, 23-Drain pipe, 31-Cleaning valve, 32-Return water valve, 41-Cleaning pump, 42-Drain pump, 5-Mounting bracket, 51-Clamping block, 6-Insert plate, 61-Snap fastener, 7-Filter bag. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0024] Example. A scaling cleaning device for the effluent pipe of an anaerobic reactor, such as... Figure 1-2 As shown, it includes a water outlet pipe 1, a cleaning water tank 2 connected to the water outlet pipe 1, and a filter screen unit disposed in the cleaning water tank 2; the bottom of one side of the cleaning water tank 2 is connected to the top of one end of the water outlet pipe 1 through a cleaning pipe 21, and the top of the other side is connected to the bottom of the other end of the water outlet pipe 1 through a return water pipe 22; a cleaning pump 41 is provided near the cleaning water tank 2 on the cleaning pipe 21; the filter screen unit is disposed in the cleaning water tank 2 and corresponds to the return water pipe 22; the filter screen unit includes a detachable filter bag 7.

[0025] The water outlet pipe 1 is provided with a front water valve 11 at one end and a rear water valve 12 at the other end. The cleaning pipe 21 and the return water pipe 22 are both connected to the section of the water outlet pipe 1 located between the front water valve 11 and the rear water valve 12, so that the water outlet pipe 1 can be closed by closing the front water valve 11 and the rear water valve 12.

[0026] Water and descaling agent are introduced into the cleaning tank 2 as needed to prepare a corresponding cleaning solution, which can clean the scale in the outlet pipe 1.

[0027] The filter unit includes a mounting frame 5 and a detachable insert plate 6 installed in the mounting frame 5. The filter bag 7 is connected to the insert plate 6. The mounting frame 5 has a slot for installing the insert plate 6 on its upper part. The mounting frame 5 and the insert plate 6 both have through holes corresponding to the return water pipe 22 in their middle parts.

[0028] The cleaning pump 41 is a multi-stage centrifugal pump with a flow rate of 10 cubic meters, a head of 50 meters, and a power of 4 kW.

[0029] The filter bag 7 is a 30-mesh nylon filter bag with a length of 70cm.

[0030] The mounting bracket 5 has locking blocks 51 on both sides above it; the insert plate 6 has corresponding snap fasteners 61 on both sides that correspond to the locking blocks 51.

[0031] The cleaning pipe 21 is equipped with a cleaning valve 31, and the return water pipe 22 is equipped with a return water valve 32.

[0032] The cleaning water tank 2 is provided with a drain pipe 23 on the side away from the cleaning pipe 21; a drain valve and a drain pump 42 are provided on the drain pipe 23.

[0033] The cleaning water tank 2 is equipped with a pH meter.

[0034] Working principle

[0035] 1. Stop the anaerobic reactor;

[0036] 2. After the water flow stops, close the front water valve 11 and the rear water valve 12, and open the cleaning valve 31;

[0037] 3. Fill the cleaning water tank 2 with water and add hydrochloric acid, control the pH at 2-3, turn on the cleaning pump 41, and use the pressure of the cleaning pump 41 to backflush the outlet pipe 1 to remove foreign objects.

[0038] 4. Impurities flow back to the cleaning water tank 2 through the return water pipe 22 and are collected and filtered by the filter bag 7. After cleaning, the impurities are collected in the trash can.

[0039] 5. Open or close the corresponding valves in sequence to restore the anaerobic reactor to normal operation.

[0040] 6. Open the drain valve and drain pump 42 to drain the wastewater in the cleaning water tank 2.

Claims

1. An anaerobic reactor effluent pipe fouling cleaning device, characterized by: It includes an outlet pipe (1), a cleaning water tank (2) connected to the outlet pipe (1), and a filter screen unit installed in the cleaning water tank (2); the bottom of one side of the cleaning water tank (2) is connected to the top of one end of the outlet pipe (1) through a cleaning pipe (21), and the top of the other side is connected to the bottom of the other end of the outlet pipe (1) through a return water pipe (22); a cleaning pump (41) is provided near the cleaning water tank (2) on the cleaning pipe (21); the filter screen unit is installed in the cleaning water tank (2) and corresponds to the return water pipe (22); the filter screen unit includes a detachable filter bag (7).

2. The apparatus according to claim 1, wherein: The filter unit includes a mounting frame (5) and a detachable insert plate (6) installed in the mounting frame (5). The filter bag (7) is connected to the insert plate (6). The mounting frame (5) has a slot for installing the insert plate (6) on its upper part. The mounting frame (5) and the insert plate (6) both have through holes corresponding to the return water pipe (22) in their middle parts.

3. The apparatus according to claim 2, wherein: The mounting bracket (5) has locking blocks (51) on both sides above; the insert plate (6) has corresponding snap fasteners (61) on both sides corresponding to the locking blocks (51).

4. The apparatus according to claim 1, wherein: The cleaning pipe (21) is equipped with a cleaning valve (31), and the return water pipe (22) is equipped with a return water valve (32).

5. The apparatus according to claim 1, wherein: The cleaning water tank (2) is provided with a drain pipe (23) on the side away from the cleaning pipe (21); a drain valve and a drain pump (42) are provided on the drain pipe (23).

6. The anaerobic reactor effluent pipe scaling cleaning device according to claim 1, characterized in that: The cleaning water tank (2) is equipped with a pH meter.

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