Rapid treatment combined device for abnormal operation of high-activity sludge process in industrial sewage treatment

Abstract

The invention discloses a rapid treatment combined device for abnormal operation of a high-activity sludge process in industrial sewage treatment. The rapid treatment combined device comprises a biochemical pool, a total activated sludge distribution device, a pulse gas stripping sludge discharge device and a gas-solid-liquid separator, wherein at least one pulse gas stripping sludge discharge device is arranged in each biochemical pool; the main activated sludge distribution device comprises a main activated sludge pipe, a plurality of sludge inlet branch pipes are arranged on one side of the main activated sludge pipe, a plurality of sludge outlet branch pipes are arranged on the other side of the main activated sludge pipe, sludge inlets of the sludge inlet branch pipes are connected with a sludge outlet of the gas-solid-liquid separator, and sludge outlets of the sludge outlet branch pipes extend into the biochemical pool; a distribution sludge discharge automatic valve is arranged on each sludge discharge branch pipe, and a gas stripping sludge discharge automatic valve is arranged on an outlet pipeline of each pulse gas stripping sludge discharge device. The problems of sludge bulking, aging, sludge floating and poor settleability can be rapidly solved, it can be ensured that biochemical activated sludge rapidly recovers normal operation and treatment efficiency, and long-period safe operation is achieved.

Description

Technical Field

[0001] The invention belongs to the field of high-activated sludge method for industrial sewage / urban sewage treatment, and in particular relates to a combined device for quickly treating abnormal operation of a high-activated sludge method in industrial sewage treatment. Background Art

[0002] With the rapid development of industrialization and the improvement of economic level in my country, the production of industrial wastewater and domestic sewage is also increasing greatly. A large number of sewage treatment plants are being built across the country. The removal method of pollutants determines the sewage treatment process. The activated sludge method is the most widely used and mature sewage treatment process. The treatment effect of the activated sludge method is very good. This technology can effectively remove organic matter, suspended solids and nutrients such as nitrogen and phosphorus in sewage, so that the treated water quality meets or even exceeds the relevant national emission standards. The main reason is that the microorganisms used in the activated sludge method have extremely high biological activity and degradation ability, and can quickly and effectively decompose harmful substances in sewage. The treatment process of the activated sludge method is relatively flexible. According to different sewage characteristics, the treatment parameters of the activated sludge method, such as sludge concentration, dissolved oxygen concentration, water temperature, etc., can be adjusted to achieve the best treatment effect. The activated sludge method can also adapt to different treatment needs by changing the structural form of the reactor, such as plug flow, complete mixing, sequencing batch, etc.

[0003] Most industrial sewage treatment processes use the activated sludge method, which is relatively simple to operate and manage. Compared with other sewage treatment technologies, the activated sludge method does not require complex equipment maintenance and operation. It only requires regular monitoring and adjustment to ensure the stable operation of the system. At the same time, the activated sludge method has a high degree of automation, which can greatly reduce the labor intensity of the staff. In order to solve the low volume load and treatment efficiency of the treatment facilities, the first thing is to increase the sludge concentration. However, operating at extremely high load sludge concentration will bring about problems such as oxygenation equipment efficiency, operation management, and sludge bulking.

[0004] Therefore, it is urgent to design an industrial sewage high-multiplication activated sludge method - a rapid solution for abnormal operation to solve this problem. Summary of the invention

[0005] The purpose of the present invention is to provide a combined device for rapid treatment of abnormal operation of a high-activated sludge method in industrial sewage treatment, aiming at some problems such as sludge swelling, aging, floating sludge and poor sedimentation that affect the normal operation of biochemical activated sludge, so as to quickly solve the problems such as sludge swelling, aging, floating sludge and poor sedimentation, to ensure that the biochemical activated sludge quickly resumes normal operation and treatment efficiency, and realizes long-term safe operation.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial sewage treatment, which comprises a biochemical tank, an activated sludge total distribution device, a pulse airlift sludge discharge device and a gas-solid-liquid separator;

[0007] At least two biochemical pools are provided, and at least one pulse gas lift mud discharge device is provided in each biochemical pool;

[0008] The activated sludge total distribution device comprises an activated sludge main pipe, which is located above one end of the biochemical pool, and is provided with a plurality of mud inlet branch pipes on one side of the activated sludge main pipe, and a plurality of mud discharge branch pipes on the other side, wherein the mud inlet of the mud inlet branch pipe is connected to the mud outlet of the gas-solid-liquid separator, and the mud discharge outlet of the mud discharge branch pipe extends into the biochemical pool, and each mud discharge branch pipe is provided with a mud distribution and discharge automatic valve;

[0009] The pulse gas lift mud discharge device is arranged in the biochemical pool, the outlet of the pulse gas lift mud discharge device is connected to the inlet of the gas-solid-liquid separator, and an automatic gas lift mud discharge valve is arranged on the outlet pipeline of each pulse gas lift mud discharge device.

[0010] Furthermore, the rapid processing combination device also includes a sludge storage tank, in which a pulse air lift sludge discharge device is arranged, the outlet of the pulse air lift sludge discharge device is connected to the inlet of a gas-solid-liquid separator and an air lift sludge discharge automatic valve is arranged on its outlet pipeline, and at the same time, a sludge discharge branch pipe is arranged on the activated sludge main pipe and extends into the sludge storage tank and a distribution sludge discharge automatic valve is arranged on the sludge discharge branch pipe.

[0011] Furthermore, a liquid level meter is provided in the sludge storage tank, and the liquid level meter is connected to the automation control cabinet via a signal line.

[0012] Furthermore, a sludge concentration meter is provided in each of the biochemical pools, and the sludge concentration meter is connected to an automatic control cabinet via a signal line.

[0013] Furthermore, the automatic control cabinet is connected to each gas lift mud discharge automatic valve and the distribution mud discharge automatic valve at the same time, and controls the opening and closing of each gas lift mud discharge automatic valve and the distribution mud discharge automatic valve.

[0014] Furthermore, a sludge discharge port is provided at one end of the activated sludge main pipe, and a sludge discharge automatic valve is provided at the sludge discharge port. The sludge discharge automatic valve is connected to an automatic control cabinet, and the automatic control cabinet controls the opening and closing of the sludge discharge automatic valve.

[0015] Furthermore, two pulse gas lift and mud discharge devices are arranged in each biochemical pool, and each pulse gas lift and mud discharge device is correspondingly equipped with a gas-solid-liquid separator.

[0016] Furthermore, the biochemical pools are provided with three, four or more.

[0017] Furthermore, the gas outlet of the gas-solid-liquid separator is connected to the regulating tank through an exhaust pipeline, and the recovered gas is transported to the regulating tank for stirring and mixing the sewage.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the device can realize the disposal and utilization of the activated sludge in each biochemical pool, has a simple operation method to quickly solve the problem, and can quickly restore the normal operation of the treatment system. It has the characteristics of a method for solving problems with low cost and short production time: first, the device quickly solves the abnormal operation problem, the production time is short, and the operation is safe and environmentally friendly; secondly, the cost of restoring the normal operation of the treatment system by the device is low, which saves 20 days compared with the usual solution to restore the normal operation of the treatment system, and the benefits are relatively large.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the rapid processing combined device;

[0021] Figure 2 It is a side sectional view of the rapid processing assembly.

[0022] Marked in the figure: 1-biochemical tank, 2-pulse air lift sludge discharge device, 3-gas-solid-liquid separator, 4-sludge storage tank, 5-activated sludge main pipe, 6-sludge inlet branch pipe, 7-sludge discharge branch pipe, 8-air lift sludge discharge automatic valve, 9-distribution sludge discharge automatic valve, 10-reserve tank distribution sludge discharge automatic valve, 11-sludge discharge port, 12-sludge discharge automatic valve, 13-liquid level meter, 14-sludge concentration meter, 15-exhaust pipeline. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 and 2As shown, a combined device for rapid treatment of abnormal operation of a high-activated sludge method in industrial wastewater treatment comprises a biochemical tank 1, an activated sludge total distribution device, a pulse airlift sludge discharge device 2, a gas-solid-liquid separator 3 and a sludge storage tank 4; the biochemical tank 1 is provided with three or four, and two pulse airlift sludge discharge devices 2 are provided in each biochemical tank 1; the activated sludge total distribution device comprises an activated sludge main pipe 5, the activated sludge main pipe 5 is located above one end of the biochemical tank 1, a plurality of sludge inlet branch pipes 6 are provided on one side of the activated sludge main pipe 5, and a plurality of sludge discharge branch pipes 7 are provided on the other side, the sludge inlet of the sludge inlet branch pipe 6 is connected to the sludge outlet of the gas-solid-liquid separator 3, the sludge outlet of the sludge discharge branch pipe 7 extends into the biochemical tank 1, and a distribution sludge discharge automatic valve 9 is provided on each sludge discharge branch pipe 7; the outlet of the pulse airlift sludge discharge device 2 is connected to the inlet of the gas-solid-liquid separator 3, and an airlift sludge discharge automatic valve 8 is provided on the outlet pipeline of each pulse airlift sludge discharge device 2. In addition, a pulse air lift sludge discharge device 2 is also provided in the sludge storage tank 4, the outlet of the pulse air lift sludge discharge device is connected to the inlet of a gas-solid-liquid separator 3, and an air lift sludge discharge automatic valve 2 is provided on its outlet pipeline. At the same time, a sludge discharge branch pipe is provided on the activated sludge main pipe 5 and extends into the sludge storage tank 4, and a storage tank distribution sludge discharge automatic valve 10 is provided on the sludge discharge branch pipe.

[0025] In this embodiment, the gas-solid-liquid separator 3 and the pulse gas lift mud discharge device 2 are used to lift mud by supplying the pulse gas lift mud discharge device 2 with the air source of the biological pool aeration blower. The mud carries air, and the gas-solid-liquid separator 3 separates the air carried in the mud into gas and liquid. The recovered air is used in the regulating tank to stir the sewage. Among them, two pulse gas lift mud discharge devices 2 are set in each biochemical pool 1, and each pulse gas lift mud discharge device 2 is correspondingly configured with a gas-solid-liquid separator 3. The gas outlet of each gas-solid-liquid separator 3 is connected to the regulating tank through an exhaust pipe 15.

[0026] In this embodiment, a sludge discharge port 11 is provided at one end of the activated sludge main pipe, and a sludge discharge automatic valve 12 is provided at the sludge discharge port 11, and the sludge discharge automatic valve 12 is connected to an automatic control cabinet, and the automatic control cabinet controls the opening and closing of the sludge discharge automatic valve 12. At the same time, a liquid level meter 13 is provided in the sludge storage tank 4, and the liquid level meter 13 is connected to the automatic control cabinet through a signal line. A sludge concentration meter 14 is provided in each biochemical pool 1, and the sludge concentration meter 14 is connected to the automatic control cabinet through a signal line. The automatic control cabinet is connected to each gas lift sludge discharge automatic valve 8 and the distribution sludge discharge automatic valve 9 at the same time, and controls the opening and closing of each gas lift sludge discharge automatic valve 8 and the distribution sludge discharge automatic valve 9. In addition, the air lift sludge discharge automatic valve 8 is interlocked with the air source automatic control solenoid valve of the pulse air lift sludge discharge device. When the air source automatic control solenoid valve of the pulse air lift sludge discharge device of pool A / pool B / pool C is opened to lift mud, the air lift sludge discharge automatic valve 8 of the corresponding pool is interlocked to open, so that the total inlet and outlet sludge distribution device can be freely switched to replenish sludge or replace activated sludge.

[0027] In this way, by opening and closing each automatic valve and controlling the start-up of the corresponding pulse airlift sludge discharge device through the automatic control cabinet, the activated sludge between each biological pool can be exchanged, replaced and replaced. If the activated sludge in pool C is swollen, aged, floating, or has poor sedimentation, the pulse airlift sludge discharge device and the inlet-discharge activated sludge total distribution device can be used to quickly replenish the activated sludge from any pool in the B / A pool that is running well to pool C, and the PLC automatic control is automatically executed to achieve the high-multiplication biological activated sludge method - a rapid solution to abnormal operation.

[0028] The principle and control process of this rapid processing combined device are as follows:

[0029] An activated sludge main pipe is set above activated sludge tank 3 / tank 4 / tank 6 / tank 8 / tank 10; two pulse air lift sludge discharge devices are set in each tank, and on the activated sludge main pipe 5, two sludge inlet branch pipes 6 and one sludge discharge branch pipe 7 are set in each tank, and a separate sludge discharge branch pipe is set directly to the sludge storage tank, and a sludge external discharge port + automatic valve is set at one end of the activated sludge main pipe 5.

[0030] For example: There are 4 pools numbered A, B, C, and D. If the activated sludge in pool B is impacted by fluctuations in water quality and water volume, biological bacteria die, sludge expands, ages, floats, has poor sedimentation, and has low sludge concentration, etc. during operation, the activated sludge in pool A, C, or D, which is running normally, is started to supplement the activated sludge in pool B. Startup method: Open the pulse airlift sludge discharge device connected to the main pipe distribution of pool A, pool C, or pool D and its corresponding airlift sludge discharge automatic valve, and simultaneously open the distribution sludge discharge automatic valve on the sludge discharge branch pipe in pool B, and the activated sludge can be supplemented to pool B, realizing the rapid solution of activated sludge exchange, substitution, and replacement.

[0031] For example: There are 4 pools numbered A, B, C, and D. If the activated sludge in pool D is impacted by fluctuations in water quality and water volume, biological bacteria die, sludge expands, ages, floats, has poor sedimentation, and has low sludge concentration, etc. during operation, the activated sludge in pool A, C, or B, which is running normally, is started to supplement the activated sludge in pool D. Startup method: Open the pulse airlift sludge discharge device connected to the main pipe distribution of pool A, pool B, or pool C and its corresponding airlift sludge discharge automatic valve, and simultaneously open the distribution sludge discharge automatic valve on the sludge discharge branch pipe in pool D, and the activated sludge can be supplemented to pool B, realizing the rapid solution of activated sludge exchange, substitution, and replacement.

[0032] Example: There are 4 pools numbered A, B, C, and D. If the activated sludge in A, B, C, and D exceeds the operating control value of 65,000 mg / l during operation as monitored by the sludge concentration meter, the activated sludge discharge method will be started. Startup method: Open the pulse airlift sludge discharge device and its corresponding airlift sludge discharge automatic valve connected to the main pipe distribution device of A, B, C, and D pools at will, and simultaneously open the sludge discharge port and sludge discharge automatic valve at the end of the main pipe and / or the reserve tank distribution sludge discharge automatic valve in the sludge reserve tank, and discharge the excess activated sludge into the sludge treatment tank or the sludge reserve tank. If the liquid level meter in the sludge reserve tank monitors that the liquid level has reached the control value, close the reserve tank distribution sludge discharge automatic valve, and only open the sludge discharge port and sludge discharge automatic valve.

[0033] Example: When the activated sludge in pools A, B, C and D is lower than 5500mg / l, the pulse airlift sludge discharge device is started to supplement the active sludge in the sludge reserve pool to pools A, B, C and D. Startup method: Open the automatic sludge discharge valve connected to the main pipe distribution device of pools A, B, C and D at will, and simultaneously open the pulse airlift sludge discharge device in the sludge reserve pool and its corresponding automatic airlift sludge discharge valve, so as to supplement the activated sludge to pools A, B, C and D, and quickly solve the activated sludge exchange, substitution and replacement.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the present invention in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the present invention. The parts not involved in the present invention are the same as the prior art or can be implemented by the prior art.

Claims

1. A combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial wastewater treatment, characterized in that: It includes a biochemical tank, an activated sludge total distribution device, a pulse airlift sludge discharge device and a gas-solid-liquid separator; At least two biochemical pools are provided, and at least one pulse gas lift mud discharge device is provided in each biochemical pool; The activated sludge total distribution device comprises an activated sludge main pipe, which is located above the biochemical pool, and is provided with a plurality of mud inlet branch pipes on one side of the activated sludge main pipe, and a plurality of mud discharge branch pipes on the other side, wherein the mud inlet of the mud inlet branch pipe is connected to the mud outlet of the gas-solid-liquid separator, and the mud outlet of the mud discharge branch pipe extends into the biochemical pool, and each mud discharge branch pipe is provided with a mud distribution automatic valve; The pulse gas lift mud discharge device is arranged in the biochemical pool, the outlet of the pulse gas lift mud discharge device is connected to the inlet of the gas-solid-liquid separator, and an automatic gas lift mud discharge valve is arranged on the outlet pipeline of each pulse gas lift mud discharge device.

2. The combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 1 is characterized in that: The rapid processing combination device also includes a sludge storage tank, in which a pulse air lift sludge discharge device is arranged. The outlet of the pulse air lift sludge discharge device is connected to the inlet of a gas-solid-liquid separator and an air lift sludge discharge automatic valve is arranged on its outlet pipeline. At the same time, a sludge discharge branch pipe is arranged on the activated sludge main pipe and extends into the sludge storage tank, and a distribution sludge discharge automatic valve is arranged on the sludge discharge branch pipe.

3. The combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 2, characterized in that: A liquid level meter is arranged in the sludge storage tank, and the liquid level meter is connected to the automation control cabinet via a signal line.

4. The combined device for rapidly treating abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 1, characterized in that: A sludge concentration meter is provided in each of the biochemical pools, and the sludge concentration meter is connected to an automatic control cabinet via a signal line.

5. A combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 3 or 4, characterized in that: The automatic control cabinet is connected to each gas lift mud discharge automatic valve and the distribution mud discharge automatic valve at the same time, and controls the opening and closing of each gas lift mud discharge automatic valve and the distribution mud discharge automatic valve.

6. The combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 1, characterized in that: A sludge discharge port is provided at one end of the activated sludge main pipe, and a sludge discharge automatic valve is provided at the sludge discharge port. The sludge discharge automatic valve is connected to an automatic control cabinet, and the automatic control cabinet controls the opening and closing of the sludge discharge automatic valve.

7. The combined device for rapidly treating abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 1, characterized in that: Two pulse gas lift and mud discharge devices are installed in each biochemical pool, and each pulse gas lift and mud discharge device is equipped with a corresponding gas-solid-liquid separator.

8. The combined device for rapid treatment of abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 1, characterized in that: The biochemical pools are provided with three or four.

9. The combined device for rapidly treating abnormal operation of a highly activated sludge process in industrial wastewater treatment according to claim 1, characterized in that: The gas outlet of the gas-solid-liquid separator is connected to the regulating tank through an exhaust pipeline.

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