Recycling and reusing device for backwashing sewage of filter of circulating water system of continuous casting machine
By designing a filter backwashing and discharge sewage recycling device for the continuous casting machine circulating water system, the sewage is sent to the turbid ring water treatment system for treatment and reuse, the problem of waste of sewage is solved and the energy-saving and consumption reduction effect of the steelmaking process is achieved.
Patent Information
- Application Number
- CN202422858912.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In the prior art, the sewage generated by the backwashing of the filter of the circulating water system of the continuous casting machine is discharged into the sewage pipeline through the sewage pipeline, resulting in waste of water resources and increased water costs in the steelmaking process.
A filter backwashing and discharge sewage recycling device for continuous casting machine circulating water system is designed, and the sewage is sent to the turbid ring water treatment system of continuous casting machine through a lifting pump and then reused to the turbid ring water system.
It reduces the drainage and water replenishment of the steelmaking process, reduces the production and water treatment costs, and realizes the reuse of water resources and energy conservation and consumption reduction.
Smart Images
Figure CN223184229U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for recycling backwash sewage from a filter of a circulating water system of a continuous casting machine, and belongs to the technical field of energy conservation and consumption reduction. Background Art
[0002] The main function of the filters in the continuous casting machine's circulating water system in the steelmaking process of steel mills is to filter the circulating water from the continuous casting machine, remove suspended solids, and then supply it to the continuous casting equipment. After a certain period of operation, the filter automatically backwashes through a program. The wastewater generated by the filter backwash is discharged into the sewage network through a sewage pipe. This drainage method results in a significant waste of water resources, increasing the water cost of the steelmaking process and the operating costs of the water treatment process. Utility Model Content
[0003] The purpose of the utility model is to provide a device for recycling backwash wastewater from filters of a continuous casting machine's circulating water system, which can uniformly collect backwash wastewater from filters of a continuous casting machine's circulating water system, and send the collected wastewater to a turbid circulating water treatment system of the continuous casting machine through a lifting pump. After being treated by the turbid circulating water treatment system of the continuous casting machine, the wastewater is returned to the turbid circulating water system of the continuous casting machine, thereby saving energy and reducing consumption, and solving the problems existing in the background technology.
[0004] The technical solution of the utility model is:
[0005] A device for recycling backwash wastewater from a filter in a circulating water system of a continuous casting machine comprises a pipe filter, a shallow sand filter, a pipe filter sewage pipe, a shallow sand filter sewage pipe, a sewage collection pipe, a sewage pool, a lifting pump, a sewage lifting pipe, a turbid water treatment system for a continuous casting machine, a continuous casting turbid water pool, a crystallization water pool, a shallow sand filter water supply pipe, a pipe filter water supply pipe and a recycled water pipe. The crystallization water pool is connected to the water inlets of the pipe filter and the shallow sand filter through the pipe filter water supply pipe and the shallow sand filter water supply pipe, respectively. The water outlets of the pipe filter and the shallow sand filter are connected to the water inlet of the sewage collection pipe through the pipe filter sewage pipe and the shallow sand filter sewage pipe, respectively. The water outlet of the sewage collection pipe is arranged above the sewage pool. A lifting pump is arranged in the sewage pool. The lifting pump is connected to the turbid water treatment system of the continuous casting machine through the sewage lifting pipe. The turbid water treatment system of the continuous casting machine is connected to the continuous casting turbid water pool through the recycled water pipe.
[0006] The connection point of the pipeline filter sewage pipe and the shallow sand filter sewage pipe is located just below the sewage collection pipe.
[0007] The sewage collection pipe is arranged at an angle, and is arranged downwardly at an angle of 15 degrees from the water inlet to the water outlet.
[0008] The lifting pump is connected to an on-site operation box, and the on-site operation box is arranged outside the sewage tank.
[0009] The lifting pump is arranged at a position 3 meters below zero in the sewage pool.
[0010] The continuous casting machine turbid circulating water system is a water supply system for continuous casting secondary cooling water, and the continuous casting machine turbid circulating water treatment system processes the collected sewage and recycles it into the continuous casting machine turbid circulating water system.
[0011] The pipeline filter, shallow sand filter, lifting pump, on-site operation box, continuous casting machine turbid circulating water treatment system and continuous casting machine turbid circulating water system are all well-known and commonly used equipment in the art.
[0012] The beneficial effects of the utility model are: it can uniformly collect the backwash sewage from the filter of the continuous casting machine circulating water system, send the collected sewage to the continuous casting machine turbid circulating water treatment system through the lifting pump, and then return it to the continuous casting machine turbid circulating water system after being treated by the continuous casting machine turbid circulating water treatment system, which greatly reduces the drainage and water replenishment of the steelmaking process, reduces the steelmaking production cost and the operating cost of the water treatment process, and saves energy and reduces consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of the utility model;
[0014] In the figure: pipeline filter 1, shallow sand filter 2, pipeline filter sewage pipe 3, shallow sand filter sewage pipe 4, sewage collection pipe 5, sewage pool 6, lifting pump 7, sewage lifting pipe 8, continuous casting machine turbid ring water treatment system 9, continuous casting turbid ring water pool 10, crystallization water pool 11, shallow sand filter water supply pipe 12, pipeline filter water supply pipe 13, recycled water pipe 14. DETAILED DESCRIPTION
[0015] The present invention will be further described below with reference to the accompanying drawings and through examples.
[0016] A continuous casting machine circulating water system filter backwash sewage recycling and reuse device, comprising a pipeline filter 1, a shallow sand filter 2, a pipeline filter sewage pipe 3, a shallow sand filter sewage pipe 4, a sewage collection pipe 5, a sewage pool 6, a lifting pump 7, a sewage lifting pipe 8, a continuous casting machine turbid water treatment system 9, a continuous casting turbid water pool 10, a crystallization water pool 11, a shallow sand filter water supply pipe 12, a pipeline filter water supply pipe 13 and a recycled water pipe 14, the crystallization water pool 11 is respectively connected to the pipeline filter water supply pipe 13 and the shallow sand filter. The filter water supply pipe 12 is connected to the water inlet ends of the pipe filter 1 and the shallow sand filter 2. The water outlet ends of the pipe filter 1 and the shallow sand filter 2 are connected to the water inlet of the sewage collection pipe 5 through the pipe filter sewage pipe 3 and the shallow sand filter sewage pipe 4 respectively. The water outlet of the sewage collection pipe 5 is arranged above the sewage pool 6. A lifting pump 7 is arranged in the sewage pool 6. The lifting pump 7 is connected to the continuous casting machine turbid water treatment system 9 through the sewage lifting pipe 8. The continuous casting machine turbid water treatment system 9 is connected to the continuous casting turbid water pool 10 through the recycled water pipe 14.
[0017] The connection point between the pipeline filter sewage pipe 3 and the shallow sand filter sewage pipe 4 is located directly below the sewage collection pipe 5.
[0018] The sewage collection pipe 5 is arranged at an angle, and is arranged downwardly at an angle of 15 degrees from the water inlet to the water outlet to prevent water from accumulating in the pipe and freezing in winter.
[0019] The lifting pump 7 is arranged at a position of -3 meters in the sewage pool 6, and an on-site operation box is set on site.
[0020] In this embodiment, the pipe filter 1 and shallow sand filter 2 use pressurized drainage. The pipe filter drain pipe 3 and shallow sand filter drain pipe 4 are connected directly below a sewage collection pipe 5. These two drains drain wastewater into a sewage tank 6 via the sewage collection pipe 5. The start and stop times of the lift pump 7 are determined based on the liquid level in the sewage tank 6. The wastewater is then discharged through a sewage lift pipe 8 to the continuous casting machine's turbid water treatment system 9 for treatment. The treated water is then returned to the continuous casting turbid water tank 10 via a reclaimed water pipe 14 under residual pressure for reuse.
[0021] By adopting the utility model, the backwash sewage of the filter of the continuous casting machine circulating water system can be collected in real time through the relevant pipelines, which greatly reduces the drainage and water replenishment of the steelmaking process, reduces the steelmaking production cost and the operating cost of the company's water treatment process, and saves energy and reduces consumption.
[0022] By collecting and reusing backwash wastewater from the filters in the continuous casting machine's circulating water system, this utility model has reduced the total daily water discharge in the steelmaking process from an average of approximately 4,200 tons to less than 2,000 tons. This saves the steel mill approximately 330,000 yuan in production costs per month. Based on a wastewater treatment fee of 1.46 yuan per ton, this translates to approximately 100,000 yuan in water treatment costs per month.
Claims
1. A device for recycling backwash wastewater from a filter in a continuous casting machine circulating water system, characterized by: The system comprises a pipeline filter (1), a shallow sand filter (2), a pipeline filter sewage pipe (3), a shallow sand filter sewage pipe (4), a sewage collection pipe (5), a sewage pool (6), a lifting pump (7), a sewage lifting pipe (8), a continuous casting machine turbid water treatment system (9), a continuous casting turbid water pool (10), a crystallization water pool (11), a shallow sand filter water supply pipe (12), a pipeline filter water supply pipe (13) and a recycled water pipe (14), wherein the crystallization water pool (11) is connected to the pipeline filter through the pipeline filter water supply pipe (13) and the shallow sand filter water supply pipe (12). The water inlet of the filter (1) and the shallow sand filter (2) are connected, and the water outlets of the pipe filter (1) and the shallow sand filter (2) are connected to the water inlet of the sewage collection pipe (5) through the pipe filter sewage pipe (3) and the shallow sand filter sewage pipe (4), respectively. The water outlet of the sewage collection pipe (5) is arranged above the sewage pool (6), and a lifting pump (7) is arranged in the sewage pool (6). The lifting pump (7) is connected to the continuous casting machine turbid water treatment system (9) through the sewage lifting pipe (8), and the continuous casting machine turbid water treatment system (9) is connected to the continuous casting turbid water pool (10) through the recycled water pipe (14).
2. The device for recycling backwash wastewater from a filter in a continuous casting machine circulating water system according to claim 1, characterized in that: The connection point between the pipeline filter sewage pipe (3) and the shallow sand filter sewage pipe (4) is located directly below the sewage collection pipe (5).
3. The device for recycling backwash wastewater from a filter in a circulating water system of a continuous casting machine according to claim 1 or 2, characterized in that: The sewage collection pipe (5) is arranged at an angle, and is arranged at a downward angle of 15 degrees from the water inlet to the water outlet.
4. The device for recycling backwash wastewater from a filter in a circulating water system of a continuous casting machine according to claim 1 or 2, characterized in that: The lifting pump (7) is connected to an on-site operation box, and the on-site operation box is arranged outside the sewage tank (6).