Self-control water treatment device in mixing method paste resin production process

Abstract

The utility model relates to the technical field of water treatment, in particular to a self-control water treatment device in a paste resin production process by a mixing method, which comprises a water injection header pipe, an aluminum sulfate preparation tank, a flocculant preparation tank, a wastewater collection tank and a clarification tank, and a first water injection pipeline is fixedly communicated between the water injection header pipe and an inlet at the top of the aluminum sulfate preparation tank. The device disclosed by the utility model is reasonable and compact in structure and convenient to use, and is convenient to operate by additionally arranging interlocks among the aluminum sulfate preparation tank, the flocculant preparation tank and the remote transmission liquid level device electric control valves and related matched pipelines and automatically controlling and blending a liquid aluminum sulfate treatment agent and a polyacrylamide treatment agent; the workload of operators is greatly reduced, the cost of manpower and material resources is saved, and the problems of long operation time caused by manual preparation of a treating agent, overflow risk caused by untimely liquid level control and time and labor consumption in the existing water treatment process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, and is an automatic water treatment device in the production process of mixed paste resin. Background Art

[0002] At present, the paste resin production equipment is mainly divided into polymerization process, stripping process, recovery process, drying process and water treatment process according to production performance. Since the production equipment comes from the design of Shanghai Chlor-Alkali in the late 1980s, although it has been optimized for many years, there are still many manual operations in the equipment, and there are many safety and quality risks in the operation process.

[0003] At present, two kinds of water treatment agents are mainly used in the water treatment process, one is polyacrylamide and the other is liquid aluminum sulfate. The water treatment process mainly treats the wastewater from the polymerization process and the drying process. The wastewater from the polymerization process and the drying process is concentrated in the wastewater collection pool, and liquid aluminum sulfate is manually added to adjust the pH value of the wastewater between 6.0 and 9.0. After adjusting the pH value, the wastewater in the wastewater collection pool is sent to the clarification tank, and the flocculant polyacrylamide is added to the clarification tank for flocculation and sedimentation, and then the slag is separated by a centrifuge, and finally, it is sent to the biochemical treatment device.

[0004] Therefore, the problems existing in the existing water treatment process are as follows:

[0005] (1) In the existing water treatment process, the pH value of wastewater is difficult to control, and the addition of the auxiliary agent liquid aluminum sulfate is manual. The liquid aluminum sulfate is provided by the manufacturer in ton barrels, and the staff on duty add it into the wastewater collection pool at a frequency of 12 / h. The ton barrels of liquid aluminum sulfate are manually replaced every 10 days, and the position of the ton barrels of liquid aluminum sulfate needs to be frequently changed as the weather temperature changes.

[0006] (2) In the existing water treatment process, the flocculant polyacrylamide and the auxiliary agent are prepared manually. The manually prepared polyacrylamide is temporarily stored in a storage tank and then added to a clarification tank for clarification. The water addition operation during preparation is manually performed by the on-site personnel. The water injection and preparation process takes about 20 minutes, and the on-site operator is required to manually close the water injection valve after preparation.

[0007] The above-mentioned operations take a long time, and the water injection process and the manual addition of chemicals require employees to pay real-time attention to the changes in the liquid level. If the employees fail to close the valve in time, there may be a risk of liquid level control exceeding requirements or even overflowing, resulting in a waste of additives. Summary of the invention

[0008] The utility model provides an automatic water treatment device in the production process of mixed paste resin, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problems of long operation time and risk of overflow caused by untimely liquid level control in the existing water treatment process.

[0009] The technical scheme of the utility model is realized by the following measures: an automatic water treatment device in a mixed method paste resin production process comprises a water injection main pipe, an aluminum sulfate preparation tank, a flocculant preparation tank, a wastewater collection tank and a clarifier, a first water injection pipeline is fixedly connected between the water injection main pipe and the top inlet of the aluminum sulfate preparation tank, a second water injection pipeline is fixedly connected between the water injection main pipe and the top inlet of the aluminum sulfate preparation tank, an aluminum sulfate feed pipeline is fixedly connected to the upper inlet of the aluminum sulfate preparation tank, a flocculant feed pipeline is fixedly connected to the upper inlet of the flocculant preparation tank, a first liquid delivery pipeline is fixedly connected between the lower outlet of the aluminum sulfate preparation tank and the inlet of the wastewater collection tank, a second liquid delivery pipeline is fixedly connected between the lower outlet of the flocculant preparation tank and the top inlet of the clarifier, and a first waste liquid inlet pipeline is fixedly connected to the inlet of the wastewater collection tank line, a second waste liquid inlet pipeline is fixedly connected between the outlet of the wastewater collection tank and the lower inlet of the clarification tank, an electric control valve 1 is fixedly installed on the first water injection pipeline, a remote liquid level device 1 is fixedly installed on the side of the aluminum sulfate preparation tank, and an interlock is arranged between the remote liquid level device 1 and the electric control valve 1, an electric control valve 2 is fixedly installed on the second water injection pipeline, a remote liquid level device 2 is fixedly installed on the side of the flocculant preparation tank, and an interlock is arranged between the remote liquid level device 2 and the electric control valve 2, an electric control valve 3 is fixedly installed on the first liquid delivery pipeline, a remote liquid level device 3 and a water quality pH detector are fixedly installed on the wastewater collection tank, and the electric control valve 3 is interlocked with the remote liquid level device 3 and the pH detector respectively, an electric control valve 4 is fixedly installed on the second liquid delivery pipeline, a remote liquid level device 4 is fixedly installed on the clarification tank, and an interlock is arranged between the electric control valve 4 and the remote liquid level device.

[0010] The following are further optimizations and / or improvements to the above utility model technical solution:

[0011] The aluminum sulfate preparation tank and the flocculant preparation tank are both provided with agitators.

[0012] A delivery pump is fixedly installed on the second liquid delivery pipeline between the above-mentioned electric control valve 4 and the wastewater clarification tank.

[0013] The above-mentioned aluminum sulfate feed pipeline, flocculant feed pipeline and second waste liquid inlet pipeline are all fixedly installed with valves, the first water injection pipeline between the water injection main pipe and the electric control valve one is fixedly installed with a valve, and the second water injection pipeline between the water injection main pipe and the electric control valve two is fixedly installed with a valve.

[0014] A valve is fixedly installed on the first liquid delivery pipeline between the above-mentioned electric control valve three and the aluminum sulfate preparation tank, and a valve is fixedly installed on the second liquid delivery pipeline between the electric control valve four and the flocculant preparation tank.

[0015] The utility model has a reasonable and compact structure and is easy to use. It adds an aluminum sulfate preparation tank, a flocculant preparation tank, an interlock between the remote liquid level device electric control valve and related supporting pipelines, and automatically controls the preparation of liquid aluminum sulfate treatment agent and polyacrylamide treatment agent. Then, the liquid aluminum sulfate treatment agent is added to the wastewater collection tank to adjust the pH value of the wastewater in the wastewater collection tank, and the wastewater with adjusted pH value is sent to the clarification tank. The wastewater in the clarification tank is flocculated and settled before being sent to the subsequent process. The device is easy to operate. After being put into use, it greatly reduces the workload of the operating staff, saves manpower and material costs, and overcomes the problems of long operation time caused by manual preparation of treatment agents, the risk of overflow caused by untimely liquid level control, and time-consuming and labor-intensive problems in the existing water treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 The figure is a schematic diagram of the process flow of the best embodiment of the utility model.

[0017] The codes in the accompanying drawings are: 1 is a water injection main, 2 is an aluminum sulfate preparation tank, 3 is a flocculant preparation tank, 4 is a wastewater collection tank, 5 is a clarification tank, 6 is a first water injection pipeline, 7 is a second water injection pipeline, 8 is an aluminum sulfate feed pipeline, 9 is a flocculant feed pipeline, 10 is a first liquid delivery pipeline, 11 is a second liquid delivery pipeline, 12 is a first waste liquid inlet pipeline, 13 is a second waste liquid inlet pipeline, 14 is an electric control valve one, 15 is an electric control valve two, 16 is an electric control valve three, 17 is an electric control valve four, 18 is a remote liquid level device one, 19 is a remote liquid level device two, 20 is a stirrer, 21 is a delivery pump, 22 is a valve, 23 is a pH detector, 24 is a remote liquid level device three, and 25 is a remote liquid level device four. DETAILED DESCRIPTION

[0018] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0019] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0020] The present invention is further described below in conjunction with the embodiments and drawings:

[0021] As attached Figure 1As shown, the automatic water treatment device in the production process of the mixed method paste resin includes a water injection main pipe 1, an aluminum sulfate preparation tank 2, a flocculant preparation tank 3, a wastewater collection tank 4 and a clarification tank 5. A first water injection pipeline 6 is fixedly connected between the water injection main pipe 1 and the top inlet of the aluminum sulfate preparation tank 2, a second water injection pipeline 7 is fixedly connected between the water injection main pipe 1 and the top inlet of the aluminum sulfate preparation tank 2, an aluminum sulfate feed pipeline 8 is fixedly connected to the upper inlet of the aluminum sulfate preparation tank 2, a flocculant feed pipeline 9 is fixedly connected to the upper inlet of the flocculant preparation tank 3, a first liquid delivery pipeline 10 is fixedly connected between the lower outlet of the aluminum sulfate preparation tank 2 and the inlet of the wastewater collection tank 4, a second liquid delivery pipeline 11 is fixedly connected between the lower outlet of the flocculant preparation tank 3 and the top inlet of the clarification tank 5, a first waste liquid feed pipeline 12 is fixedly connected to the inlet of the wastewater collection tank 4, and a first waste liquid feed pipeline 12 is fixedly connected between the outlet of the wastewater collection tank 4 and the lower inlet of the clarification tank 5. A second waste liquid inlet pipeline 13 is connected, an electric control valve 14 is fixedly installed on the first water injection pipeline 6, a remote level meter 18 is fixedly installed on the side of the aluminum sulfate preparation tank 2, and an interlock is arranged between the remote level meter 18 and the electric control valve 14, an electric control valve 2 15 is fixedly installed on the second water injection pipeline 7, a remote level meter 2 19 is fixedly installed on the side of the flocculant preparation tank 3, and an interlock is arranged between the remote level meter 2 19 and the electric control valve 2 15, An electric-controlled valve three 16 is fixedly installed on the first liquid delivery pipeline 10, a remote liquid level device three 24 and a water quality pH detector 23 are fixedly installed on the wastewater collection tank 4, and an interlock is arranged between the electric-controlled valve three 16 and the remote liquid level device three 24 and the pH detector 23 respectively. An electric-controlled valve four 17 is fixedly installed on the second liquid delivery pipeline 11, and a remote liquid level device four 25 is fixedly installed on the clarification tank 5, and an interlock is arranged between the electric-controlled valve four 17 and the remote liquid level device 25.

[0022] In the existing water treatment process, on the one hand, the liquid aluminum sulfate treatment agent added to the wastewater collection tank 4 is commercially available liquid aluminum sulfate, which needs to be manually added by the operator; on the other hand, the polyacrylamide treatment agent added to the clarification tank 5 also needs to be manually prepared and added by the operator. The above two aspects have the risk of long operation time and overflow caused by untimely liquid level control, which is time-consuming and labor-intensive.

[0023] In the present invention, on the one hand, by adding an aluminum sulfate preparation tank 2 and related supporting pipelines, and interlocking between a remote level sensor 18 and an electric control valve 14, water is injected into the aluminum sulfate preparation tank 2. When the remote level sensor 18 detects that the liquid level in the aluminum sulfate preparation tank 2 reaches 85%, the interlocking electric control valve 14 is closed to stop the water injection, and the calculated solid aluminum sulfate is added to the aluminum sulfate preparation tank 2 for stirring to obtain a liquid aluminum sulfate treatment agent. On the other hand, by adding a flocculant preparation tank 3 and related supporting pipelines, the aluminum sulfate preparation tank 2 is provided with a plurality of aluminum sulfate preparation tanks, and ... line, and the remote level transmitter 19 is interlocked with the electric control valve 15 to inject water into the flocculant preparation tank 3. When the remote level transmitter 19 detects that the liquid level in the flocculant preparation tank 3 reaches 85%, the interlocked electric control valve 15 is closed to stop injecting water, and the calculated polyacrylamide is added into the flocculant preparation tank 3 for stirring to obtain the polyacrylamide treating agent, which overcomes the problems of long operation time, risk of overflow caused by untimely liquid level control, and time-consuming and labor-intensive process caused by manual preparation of the treating agent in the existing water treatment process.

[0024] The utility model firstly mixes liquid aluminum sulfate treatment agent and polyacrylamide treatment agent through automatic control, then adds liquid aluminum sulfate treatment agent to wastewater collection pool 4, adjusts pH value of wastewater in wastewater collection pool 4, sends wastewater with adjusted pH value to clarification pool 5, and sends wastewater in clarification pool 5 to subsequent process after flocculation and sedimentation. The device is easy to operate, and after it is put into use, it greatly reduces the workload of operating staff. Its operation effect is: liquid aluminum sulfate is used as flocculation and precipitation agent, with a monthly consumption of about 6 tons, a unit price of 2,300 yuan / ton, and a concentration of about 7.8%; solid aluminum sulfate has a unit price of 2,300 yuan / ton, and a main content of 15.6%; at present, the unit consumption of aluminum sulfate is 3.72 yuan (calculated based on a monthly output of 2,500 tons), and the unit consumption of solid aluminum sulfate is estimated to be 2.76 yuan. According to the annual output of 30,000 tons, it can save 28,800 yuan, and has the characteristics of safety, labor saving, simplicity and high efficiency.

[0025] According to actual needs, the automatic water treatment device in the above-mentioned mixed method paste resin production process can be further optimized and / or improved:

[0026] As attached Figure 1 As shown, both the aluminum sulfate preparation tank 2 and the flocculant preparation tank 3 are provided with a stirrer 20 .

[0027] As attached Figure 1 As shown, a delivery pump 21 is fixedly installed on the second liquid delivery pipeline 11 between the electric control valve 17 and the wastewater clarification tank 5.

[0028] As attached Figure 1As shown, valves 22 are fixedly installed on the aluminum sulfate feed pipeline 8, the flocculant feed pipeline 9 and the second waste liquid inlet pipeline 13, a valve 22 is fixedly installed on the first water injection pipeline 6 between the water injection main pipe 1 and the electric control valve 1 14, and a valve 22 is fixedly installed on the second water injection pipeline 7 between the water injection main pipe 1 and the electric control valve 2 15.

[0029] As attached Figure 1 As shown, a valve 22 is fixedly installed on the first liquid delivery pipeline 10 between the electric control valve three 16 and the aluminum sulfate preparation tank 2, and a valve 22 is fixedly installed on the second liquid delivery pipeline 11 between the electric control valve four 17 and the flocculant preparation tank 3.

[0030] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

[0031] The use process of the best embodiment of the utility model:

[0032] Before wastewater treatment:

[0033] Prepare liquid aluminum sulfate treatment agent: inject water into aluminum sulfate preparation tank 2 through water injection main pipe 1 and first water injection pipeline 6, when remote level meter 18 detects that the liquid level in aluminum sulfate preparation tank 2 rises to 85%, control electric control valve 14 to stop water injection, send the calculated solid aluminum sulfate to aluminum sulfate preparation tank 2, start agitator 20 in aluminum sulfate preparation tank 2 for stirring, and stand by after preparation;

[0034] Prepare polyacrylamide treatment agent: inject water into flocculant preparation tank 3 through water injection main pipe 1 and second water injection pipeline 7. When remote level meter 2 19 detects that the liquid level in aluminum sulfate preparation tank 2 rises to 85%, control electric control valve 2 15 to stop water injection, send the calculated polyacrylamide to flocculant preparation tank 3, start agitator 20 in flocculant preparation tank 3 for stirring, and wait for use after preparation;

[0035] When treating wastewater:

[0036] First, the wastewater from the polymerization process and the drying process is sent to the wastewater collection tank 4 through the first waste liquid inlet pipeline 12. When the remote liquid level sensor 3 24 detects that the wastewater in the wastewater collection tank 4 reaches the set value, the wastewater collection is stopped, the electric control valve 3 16 is interlocked to open, and liquid aluminum sulfate treatment agent is injected into the wastewater collection tank 4. When the pH detector 23 monitors that the pH value of the wastewater in the wastewater collection tank 4 is between 6.0 and 9.0, the electric control valve 3 16 is interlocked to close and the injection of liquid aluminum sulfate treatment agent is stopped. Then, the wastewater collection tank 4 is adjusted to a set value. The wastewater after pH value adjustment is sent to the clarifier 5 by the second waste liquid inlet pipeline 13. When the remote level sensor 25 detects that the wastewater in the clarifier 5 reaches the set value, the valve 22 on the second waste liquid inlet pipeline 13 is manually stopped to stop injecting the wastewater with adjusted pH into the clarifier 5. The electric control valve 24 17 is interlocked to open and add the calculated amount of polyacrylamide treatment agent into the clarifier 5. The wastewater with adjusted pH in the clarifier 5 is flocculated and settled. Finally, the wastewater after flocculation and settlement is sent to the subsequent centrifuge and biochemical treatment device for treatment.

[0037] After wastewater treatment:

[0038] When the remote level gauge 18 detects that the liquid level in 2 drops to 10%, the interlock opens the electric control valve 14, and water is injected into the aluminum sulfate preparation tank 2 through the water injection main pipe 1 and the first water injection pipeline 6. When the remote level gauge 18 detects that the liquid level in the aluminum sulfate preparation tank 2 rises to 85%, the electric control valve 14 is controlled to stop injecting water, and the calculated solid aluminum sulfate is sent to the aluminum sulfate preparation tank 2, and the stirrer 20 in the aluminum sulfate preparation tank 2 is turned on for stirring, and the next use is carried out after preparation;

[0039] When the remote level meter 219 detects that the liquid level in the flocculant preparation tank 3 drops to 10%, the electric control valve 215 is interlocked to open, and water is injected into the flocculant preparation tank 3 through the water injection main 1 and the second water injection pipeline 7. When the remote level meter 219 detects that the liquid level in the aluminum sulfate preparation tank 2 rises to 85%, the electric control valve 215 is controlled to stop injecting water, and the calculated polyacrylamide is sent to the flocculant preparation tank 3. The agitator 20 in the flocculant preparation tank 3 is turned on for stirring, and the next use is carried out after preparation.

Claims

1. An automatic water treatment device in the production process of mixed paste resin, characterized in that The invention comprises a water injection main pipe, an aluminum sulfate preparation tank, a flocculant preparation tank, a wastewater collection tank and a clarifier tank. A first water injection pipeline is fixedly connected between the water injection main pipe and the top inlet of the aluminum sulfate preparation tank. A second water injection pipeline is fixedly connected between the water injection main pipe and the top inlet of the aluminum sulfate preparation tank. An aluminum sulfate feeding pipeline is fixedly connected to the upper inlet of the aluminum sulfate preparation tank. A flocculant feeding pipeline is fixedly connected to the upper inlet of the flocculant preparation tank. A first liquid delivery pipeline is fixedly connected between the lower outlet of the aluminum sulfate preparation tank and the inlet of the wastewater collection tank. A second liquid delivery pipeline is fixedly connected between the lower outlet of the flocculant preparation tank and the top inlet of the clarifier tank. A first waste liquid delivery pipeline is fixedly connected to the inlet of the wastewater collection tank. A first waste liquid delivery pipeline is fixedly connected between the outlet of the wastewater collection tank and the lower inlet of the clarifier tank. A second waste liquid inlet pipeline is provided, an electric control valve 1 is fixedly installed on the first water injection pipeline, a remote liquid level device 1 is fixedly installed on the side of the aluminum sulfate preparation tank, and an interlock is provided between the remote liquid level device 1 and the electric control valve 1, an electric control valve 2 is fixedly installed on the second water injection pipeline, a remote liquid level device 2 is fixedly installed on the side of the flocculant preparation tank, and an interlock is provided between the remote liquid level device 2 and the electric control valve 2, an electric control valve 3 is fixedly installed on the first liquid delivery pipeline, a remote liquid level device 3 and a water quality pH detector are fixedly installed on the wastewater collection tank, and the electric control valve 3 is respectively interlocked with the remote liquid level device 3 and the pH detector, an electric control valve 4 is fixedly installed on the second liquid delivery pipeline, a remote liquid level device 4 is fixedly installed on the clarification tank, and an interlock is provided between the electric control valve 4 and the remote liquid level device.

2. The automatic water treatment device in the production process of the hybrid paste resin according to claim 1, characterized in that Agitators are provided on both the aluminum sulfate preparation tank and the flocculant preparation tank.

3. The automatic water treatment device in the production process of the hybrid paste resin according to claim 1 or 2, characterized in that A delivery pump is fixedly installed on the second liquid delivery pipeline between the electric control valve four and the wastewater clarification tank.

4. The automatic water treatment device in the production process of the hybrid paste resin according to claim 1 or 2, characterized in that Valves are fixedly installed on the aluminum sulfate feed pipeline, the flocculant feed pipeline and the second waste liquid inlet pipeline, a valve is fixedly installed on the first water injection pipeline between the water injection main pipe and the electric control valve one, and a valve is fixedly installed on the second water injection pipeline between the water injection main pipe and the electric control valve two.

5. The automatic water treatment device in the production process of the hybrid paste resin according to claim 3, characterized in that Valves are fixedly installed on the aluminum sulfate feed pipeline, the flocculant feed pipeline and the second waste liquid inlet pipeline, a valve is fixedly installed on the first water injection pipeline between the water injection main pipe and the electric control valve one, and a valve is fixedly installed on the second water injection pipeline between the water injection main pipe and the electric control valve two.

6. The automatic water treatment device in the production process of the hybrid paste resin according to claim 1, 2 or 5, characterized in that A valve is fixedly installed on the first liquid delivery pipeline between the electric control valve three and the aluminum sulfate preparation tank, and a valve is fixedly installed on the second liquid delivery pipeline between the electric control valve four and the flocculant preparation tank.

7. The automatic water treatment device in the production process of the hybrid paste resin according to claim 3, characterized in that A valve is fixedly installed on the first liquid delivery pipeline between the electric control valve three and the aluminum sulfate preparation tank, and a valve is fixedly installed on the second liquid delivery pipeline between the electric control valve four and the flocculant preparation tank.

8. The automatic water treatment device in the production process of the hybrid paste resin according to claim 4, characterized in that A valve is fixedly installed on the first liquid delivery pipeline between the electric control valve three and the aluminum sulfate preparation tank, and a valve is fixedly installed on the second liquid delivery pipeline between the electric control valve four and the flocculant preparation tank.

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