Dual-combination sewage treatment system of environment-friendly mixing plant

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a double-combination sewage treatment system of an environment-friendly mixing plant. The device comprises a double-combination sand-gravel separation system, a sewage stirring system connected with the sand-gravel separation system, a concentration adjusting system and a filter pressing system which are arranged in the sewage stirring system, and an electric control system, and the sand-gravel separation system comprises two sand-gravel separation lines which are symmetrically distributed; the sand-gravel separation line comprises a discharge chute, a sand-gravel separator and a sand silo; the sewage stirring system comprises a stirring pool / tank and a stirring device; the concentration adjusting system comprises a finished product pool / tank, a concentration tester device and a sewage scale; the filter pressing system comprises a clarification water tank / tank, filter pressing equipment and a filter cake bin; by means of the double-combination sand and stone separation system, stones and sand in sewage are effectively separated and recycled, and the working efficiency is improved; the sewage stirring system is combined with the concentration adjusting system, so that the sewage is fully stirred and the concentration is accurately adjusted, and the treated sewage is ensured to meet the recycling or discharging standard.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a double-combination sewage treatment system for an environmentally friendly mixing station. Background Art

[0002] The sewage problem generated during the operation of mixing stations mainly comes from the tanker cleaning, waste treatment and site flushing. Its reasonable disposal and compliance with discharge standards or recycling have become important issues that the industry must face. To solve this challenge, industry technicians are constantly exploring and innovating. For example, the zero-discharge sewage treatment system shown in Chinese patent CN209113612U is a utility model design aimed at improving environmental benefits. This system achieves efficient resource recycling and utilization by finely separating the sand and gravel components in the waste, and adjusts the concentration of sewage and recycles it. Despite this, the solution still faces some aspects that need to be optimized in actual application: First, under the traditional model, mixing stations are independent of each other, and each station is equipped with a sewage treatment system, resulting in low overall treatment efficiency; second, when faced with high-concentration sewage, there is a lack of a rapid response emergency treatment mechanism, which affects the treatment effect; third, the stability of the electronic control system is insufficient. Once a failure occurs, it is easy to cause production stagnation, and there is a lack of necessary emergency response measures. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an environmentally friendly mixing station dual-combination sewage treatment system.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] An environmentally friendly mixing station dual-combination sewage treatment system includes a dual-combination sand and gravel separation system, a sewage mixing system connected to the sand and gravel separation system, a concentration adjustment system and a filter press system provided in the sewage mixing system, and an electronic control system, wherein:

[0006] The sand and gravel separation system has two symmetrically distributed sand and gravel separation lines, which include a discharge chute, a sand and gravel separator, and a sand silo. The discharge chute sends wastewater to the sand and gravel separator, which then discharges gravel and sand. The gravel from the two sand and gravel separation lines uses the same gravel conveying device and is sent to the stone silo. The sand from the two sand and gravel separation lines uses separate sand conveying devices and is sent to the sand silo.

[0007] The sewage mixing system includes a mixing tank / tank and a mixing device. The conical tank sends slurry water containing fine sand into the mixing tank / tank. The sewage in the mixing tank / tank is stirred by the mixing device. A water pump is installed in the mixing tank / tank to pump the sewage into the finished slurry tank / tank for mixing.

[0008] The concentration adjustment system includes a finished product pool / tank, a concentration tester, and a sewage scale. The concentration tester is installed in the finished product pool / tank. The concentration tester adjusts the sewage to the required concentration value and then transports the sewage to the sewage scale of the mixing station by mixing it with a certain proportion of clean water.

[0009] The filter press system includes a clarified water tank / tank, filter press equipment and a filter cake bin. The filter press equipment filters the high-concentration sewage in the mixing tank / tank into clear water and filter cake, which are transported to the clarified water tank / tank and filter cake bin respectively.

[0010] The electric control system includes an electric control cabinet, which is electrically connected to the sand and gravel separation system, sewage mixing system, concentration adjustment system and filter press system through lines.

[0011] This technical solution achieves comprehensive, efficient and environmentally friendly treatment of mixing station wastewater through the sand and gravel separation system, sewage mixing system, concentration adjustment system, filter press system and electronic control system. Specifically, the gravel separation system effectively separates gravel and sand from sewage through two symmetrically distributed sand and gravel separation lines; the separated gravel and sand are directly reused in the production of building materials, thereby reducing the demand for natural resource exploitation and realizing resource recycling; the dual-pipeline setting improves treatment efficiency; the sewage mixing system sends slurry water containing fine sand into the mixing pool / tank, and mixes it evenly through the stirring device to ensure that the solid particles in the sewage are fully suspended; the concentration adjustment system uses a concentration tester device to accurately control the sewage concentration, and adjusts it to the required concentration by adding clean water to meet different process requirements, so that the treated sewage is more in line with reuse or discharge standards; the filter press system separates the water and solid particles in high-concentration sewage through filter press equipment to form clean water and filter cake; the clean water is reused in the production process of the mixing station or discharged into the environment, and the filter cake contains valuable mineral components; the electronic control system centrally controls and manages each system through the electronic control cabinet to realize the automation of the entire sewage treatment process.

[0012] In addition, the dual-combination sewage treatment system for the environmentally friendly mixing station proposed in the present invention also has the following additional technical features:

[0013] According to one embodiment of the present invention, the sand conveying device includes a conical pool and a cyclone device; the slurry water containing a portion of fine sand generated by the sand and gravel separator falls into the conical pool through the water outlet of the sand and gravel separator.

[0014] This technical solution adds a conical pool and a cyclone device as part of the sand conveying device to collect the slurry water containing fine sand from the outlet of the sand and gravel separator, so as to optimize the sand recovery efficiency and ensure that the fine sand in the slurry water is effectively separated and reused.

[0015] According to one embodiment of the present invention, after the sewage in the conical pool is treated by the cyclone device, the fine sand is again transported to the sand bin by the sand conveying device, and the treated sewage enters the mixing pool / tank.

[0016] This technical solution combines a conical tank with a cyclone device to perform cyclone treatment on the sewage in the conical tank, thereby separating fine sand and transporting it to the sand silo. At the same time, it ensures that the treated sewage enters the mixing tank / tank clear and free of impurities, thereby improving the quality and efficiency of sewage treatment.

[0017] According to one embodiment of the present invention, a pneumatic butterfly valve is provided below the stirring tank or on the pipeline. The pneumatic butterfly valve is provided with an air source through an air compressor to send sewage with a higher concentration during standby period into the conical tank.

[0018] This technical solution installs a pneumatic butterfly valve under the mixing tank or on the pipeline and uses an air compressor to provide power. It can automatically return the sewage with higher concentration during the standby period to the conical tank for reprocessing, thereby reducing the sewage retention time, preventing excessive concentration from adversely affecting the system, and improving the continuity of the system.

[0019] According to one embodiment of the present invention, a water pump is provided at the bottom of the clarification water pool / tank, and the water pump is connected to water pipes for cleaning tank trucks, waste materials, sites, and unloading troughs.

[0020] This technical solution achieves water recycling by installing a water pump at the bottom of the clarifier pool / tank and connecting it to water pipes in areas such as tank cleaning, waste treatment, site cleaning and unloading chutes, thereby reducing water consumption and improving the environmental benefits of the entire system.

[0021] According to an embodiment of the present invention, the electric control system includes two electric control cabinets. When one electric control cabinet is in working state, the other electric control cabinet is in standby state, and fast fault switching is used.

[0022] This technical solution configures two electric control cabinets and adopts a fast fault switching mechanism to ensure that when one electric control cabinet is in working state, the other electric control cabinet can immediately take over the work, thereby avoiding system shutdown due to failure of a single electric control cabinet and ensuring continuous operation and efficient operation of the system.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) Through the dual-combination sand and gravel separation system, gravel and sand in sewage can be effectively separated and recovered to improve work efficiency;

[0025] (2) The sewage mixing system is combined with the concentration adjustment system to fully mix the sewage and accurately adjust the concentration to ensure that the treated sewage meets the reuse or discharge standards;

[0026] (3) The filter press system effectively separates water from solid particles in high-concentration wastewater. The clean water can be reused or safely discharged, and the filter cake contains reusable mineral components.

[0027] (4) The electric control system uses dual electric control cabinets to achieve rapid fault switching and ensure the continuity of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a connection block diagram of the utility model.

[0029] Figure 2 It is a structural diagram of the present utility model.

[0030] In the figure: 1. Discharge chute; 2. Sand and gravel separator; 3. Gravel conveying device; 4. Sand conveying device; 5. Sand silo; 6. Stone silo; 7. Conical tank; 8. Mixing tank / tank; 9. Finished product tank / tank; 10. Pneumatic butterfly valve; 11. Cyclone device; 12. Clarifying water tank / tank; 13. Filter press equipment; 14. Electric control cabinet; 15. Liquid level gauge; 16. Mixing device; 17. Line; 18. Sewage scale; 19. Water pump; 20. Air compressor; 21. Filter cake silo; 22. Concentration tester device. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides a dual-combination sewage treatment system for an environmentally friendly mixing station, including a dual-combination sand and gravel separation system, a sewage mixing system connected to the sand and gravel separation system, a concentration adjustment system and a filter press system provided in the sewage mixing system, and an electronic control system, wherein:

[0034] The sand and gravel separation system has two symmetrically distributed sand and gravel separation lines, each of which includes a discharge chute 1, a sand and gravel separator 2, and a sand silo 5. The discharge chute 1 delivers wastewater to the sand and gravel separator 2, which discharges gravel and sand. The gravel from the two sand and gravel separation lines uses the same gravel conveying device 3 and is delivered to the stone silo 6. The sand from the two sand and gravel separation lines is delivered to the sand silo 5 using separate sand conveying devices 4.

[0035] The sewage mixing system includes a mixing tank / tank 8 and a stirring device 16. The conical tank 7 feeds the slurry water containing fine sand into the mixing tank / tank 8. The sewage in the mixing tank / tank 8 is stirred by the stirring device 16. A water pump 19 is installed in the mixing tank / tank to pump the sewage into the finished slurry tank / tank for mixing.

[0036] The concentration adjustment system includes a finished product pool / tank 9, a concentration tester device 22 and a sewage scale 18. The finished product pool / tank 9 is equipped with a concentration tester device 22. The concentration tester device 22 adjusts the sewage to the required concentration value and transports the sewage to the sewage scale 18 of the mixing station by mixing a certain proportion of clean water.

[0037] The filter press system includes a clarified water tank / tank 12, a filter press device 13 and a filter cake bin 21. The filter press device 13 filters the high-concentration wastewater in the mixing tank / tank into clean water and filter cake, which are transported to the clarified water tank / tank 12 and the filter cake bin 21 respectively.

[0038] The electric control system includes an electric control cabinet 14 , which is electrically connected to the sand and gravel separation system, the sewage mixing system, the concentration adjustment system and the filter press system through lines 17 .

[0039] like Figure 1 and Figure 2 As shown, this technical solution achieves comprehensive, efficient and environmentally friendly treatment of mixing station wastewater through a sand and gravel separation system, a sewage mixing system, a concentration adjustment system, a filter press system and an electronic control system. Specifically, the gravel separation system effectively separates gravel and sand from sewage through two symmetrically distributed gravel separation lines; the separated gravel and sand are directly reused in the production of building materials, thereby reducing the demand for natural resource exploitation and realizing resource recycling; the dual-pipeline setting improves treatment efficiency; the sewage mixing system sends slurry water containing fine sand into the mixing pool / tank 8, and mixes it evenly through the stirring device 16 to ensure that the solid particles in the sewage are fully suspended; the concentration adjustment system uses the concentration tester device 22 to accurately control the sewage concentration, and adjusts it to the required concentration by adding clean water to meet different process requirements, so that the treated sewage is more in line with reuse or discharge standards; the filter press system separates the water and solid particles in high-concentration sewage through the filter press equipment 13 to form clean water and filter cake; the clean water is reused in the production process of the mixing station or discharged into the environment, and the filter cake contains valuable mineral components; the electronic control system centrally controls and manages each system through the electronic control cabinet 14 to realize the automation of the entire sewage treatment process.

[0040] In addition, the dual-combination sewage treatment system for the environmentally friendly mixing station proposed in the present invention also has the following additional technical features:

[0041] According to one embodiment of the present invention, the sand conveying device 4 includes a conical pool 7 and a cyclone device 11; the slurry water containing a portion of fine sand generated by the sand and gravel separator 2 falls into the conical pool 7 through the water outlet of the sand and gravel separator 2.

[0042] This technical solution adds a conical pool 7 and a cyclone device 11 as part of the sand conveying device 4 to collect the fine sand-containing slurry water in the outlet of the sand and gravel separator 2, so as to optimize the sand recovery efficiency and ensure that the fine sand in the slurry water is effectively separated and reused.

[0043] According to one embodiment of the present invention, after the sewage in the conical pool 7 is treated by the cyclone device 11, the fine sand is again transported to the sand bin 5 through the sand conveying device 4, and the treated sewage enters the mixing pool / tank.

[0044] This technical solution uses a conical pool 7 in combination with a cyclone device 11 to perform cyclone treatment on the sewage in the conical pool 7, thereby separating fine sand and transporting it to the sand bin 5. At the same time, it ensures that the treated sewage enters the mixing pool / tank clear and free of impurities, thereby improving the quality and efficiency of sewage treatment.

[0045] According to one embodiment of the present invention, a pneumatic butterfly valve 10 is provided below the stirring tank / tank 8 or on the pipeline. The pneumatic butterfly valve 10 provides an air source through an air compressor 20 to send sewage with a higher concentration during standby into the conical tank 7.

[0046] This technical solution installs a pneumatic butterfly valve 10 below the mixing tank / tank 8 or on the pipeline, and uses an air compressor 20 to provide power, so as to automatically return the sewage with higher concentration during the standby period to the conical tank 7 for reprocessing, thereby reducing the sewage retention time, preventing excessive concentration from adversely affecting the system, and improving the continuity of the system.

[0047] According to one embodiment of the present invention, a water pump 19 is provided at the bottom of the clarification water pool / tank 12 , and the water pump 19 is connected to a water pipe for cleaning the tank truck, waste, site, and unloading chute 1 .

[0048] This technical solution realizes the recycling of water resources by arranging a water pump 19 at the bottom of the clarification water pool / tank 12 and connecting it to water pipes in areas such as tank cleaning, waste treatment, site cleaning and unloading trough 1, so as to reduce water resource consumption and improve the environmental protection benefits of the entire system.

[0049] According to an embodiment of the present invention, the electric control system includes two electric control cabinets 14 , and when one electric control cabinet 14 is in working state, the other electric control cabinet 14 is in standby state, using fast fault switching.

[0050] This technical solution configures two electric control cabinets 14 and adopts a fast fault switching mechanism to ensure that when one electric control cabinet 14 is in working condition, the other electric control cabinet 14 can immediately take over the work, thereby avoiding system shutdown due to failure of a single electric control cabinet 14 and ensuring continuous operation and efficient operation of the system.

[0051] The usage process of the above embodiment is as follows:

[0052] like Figure 1 and Figure 2 As shown, first, the sewage generated by the mixing station enters the sand and gravel separation system through the unloading chute 1. Two symmetrically distributed pipelines process the sewage respectively, effectively separating gravel and sand. The gravel is sent to the stone bin 6 through a common conveying device, and the sand is transported to the sand bin 5 separately to achieve resource recovery; the slurry water containing fine sand falls into the conical pool 7, and after being treated by the cyclone device 11, the fine sand is separated again and sent to the sand bin 5, and the purified sewage flows into the mixing pool / tank 8; in the mixing pool / tank 8, the sewage is mixed evenly by the stirring device 16 to avoid slurry sedimentation, and the liquid level meter 15 monitors the water level to prevent overflow; the stirred sewage is pumped to the finished slurry pool / tank by the water pump 19. According to production needs, the concentration tester adjusts the sewage concentration. If necessary, it is mixed with clean water and transported to the mixing station sewage weighing 18 after reaching the required concentration. , for production use, realizing sewage reuse; if the sewage concentration is too high or requires emergency treatment, the sewage in the mixing tank / tank can pass through the filter press system and be filtered into clean water and filter cake by the filter press equipment 13; the clean water is returned to the clarified water tank / tank 12 for site cleaning, tanker washing, etc., and the filter cake is collected in the filter cake bin 21; when the system is on standby, the pneumatic butterfly valve 10 returns the high-concentration sewage to the conical tank 7 for further treatment to maintain the system circulation operation; the electronic control system realizes intelligent and automatic control through the dual electric control cabinet 14, ensuring the stable operation of each system, and supporting fast fault switching, improving system reliability and continuity; overall, the system realizes comprehensive and environmentally friendly treatment of mixing station sewage through efficient separation, precise allocation, recycling and intelligent management, achieving the goal of maximizing resource utilization and zero sewage discharge.

[0053] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall fall within the scope of the present invention. Any changes or substitutions that can be easily conceived by a person of ordinary skill in the art within the technical scope disclosed in the present invention shall fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. An environmentally friendly mixing station dual-combination sewage treatment system, characterized in that: It includes a double-combination sand and gravel separation system, a sewage mixing system connected to the sand and gravel separation system, a concentration adjustment system and a filter press system arranged in the sewage mixing system, and an electronic control system, wherein: The sand and gravel separation system comprises two symmetrically distributed sand and gravel separation lines, the sand and gravel separation lines comprising a discharge chute (1), a sand and gravel separator (2) and a sand bin (5); the discharge chute (1) sends sewage to the sand and gravel separator (2), and the sand and gravel separator (2) discharges gravel and sand; the gravel of the two sand and gravel separation lines uses a common gravel conveying device (3) and is sent to the gravel bin (6); the sand of the two sand and gravel separation lines uses a sand conveying device (4) and is sent to the sand bin (5); The sewage mixing system includes a mixing tank / tank (8) and a stirring device (16). The conical tank (7) sends slurry water containing fine sand into the mixing tank / tank (8). The sewage in the mixing tank / tank (8) is stirred by the stirring device (16). A water pump (19) is installed in the mixing tank / tank (8) to pump the sewage into the finished slurry tank / tank for mixing. The concentration adjustment system includes a finished product pool / tank (9), a concentration tester device (22) and a sewage scale (18). The finished product pool / tank (9) is equipped with a concentration tester device (22). The concentration tester device (22) adjusts the sewage to a required concentration value and transports the sewage to the sewage scale (18) of the mixing station by mixing with a certain proportion of clean water. The filter press system includes a clarified water tank / tank (12), a filter press device (13) and a filter cake bin (21). The filter press device (13) filters the high-concentration sewage in the stirring tank / tank into clear water and filter cake, which are respectively transported to the clarified water tank / tank (12) and the filter cake bin (21); The electric control system comprises an electric control cabinet (14), which is electrically connected to the sand and gravel separation system, the sewage mixing system, the concentration adjustment system and the filter press system through lines (17).

2. The dual-combination sewage treatment system for an environmentally friendly mixing station according to claim 1, characterized in that: The sand conveying device (4) comprises a conical pool (7) and a cyclone device (11); the slurry water containing a portion of fine sand produced by the sand and gravel separator (2) falls into the conical pool (7) through the water outlet of the sand and gravel separator (2).

3. The dual-combination sewage treatment system for an environmentally friendly mixing station as claimed in claim 2, characterized in that: After the sewage in the conical pool (7) is treated by the cyclone device (11), the fine sand is transported to the sand bin (5) again through the sand transport device (4), and the treated sewage enters the mixing pool / tank.

4. The dual-combination sewage treatment system for an environmentally friendly mixing station according to claim 1, characterized in that: A pneumatic butterfly valve (10) is provided below the stirring tank / tank (8) or on the pipeline. The pneumatic butterfly valve (10) provides an air source through an air compressor (20) to send sewage with a higher concentration during standby into the conical tank (7).

5. The dual-combination sewage treatment system for an environmentally friendly mixing station as claimed in claim 1, characterized in that: A water pump (19) is provided at the bottom of the clarification water pool / tank (12), and the water pump (19) is connected to water pipes for cleaning tank trucks, waste materials, sites, and unloading troughs (1).

6. The dual-combination sewage treatment system for an environmentally friendly mixing station as claimed in claim 1, characterized in that: The electric control system comprises two electric control cabinets (14). When one electric control cabinet (14) is in working state and the other electric control cabinet (14) is in standby state, fast fault switching is used.

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