Sewage treatment, regeneration and reuse system for commercial mixing station
By designing a sewage treatment, regeneration and recycling system for commercial mixed stations, the problems of environmental pollution and high water use costs caused by high sewage pH value are solved, efficient treatment and recycling of sewage are achieved, and environmental pollution and water use costs are reduced.
Patent Information
- Application Number
- CN202421794495.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-26
AI Technical Summary
Due to the high pH value of the sewage generated by the commercial mixing station, it cannot be directly used for concrete production or discharged, resulting in high water costs and serious environmental pollution.
A commercial mixed station sewage treatment regeneration and reuse system is designed, including a slope sand sedimentation tank, sewage collection tank, solid-liquid separation device, sewage cleaning separation tank and clean water storage tank. Through preliminary precipitation, solid-liquid separation, pH adjustment and clean-fouling separation, sewage regeneration and reuse of sewage is achieved.
It effectively reduces environmental pollution, saves water costs, reduces dependence on groundwater resources, and improves the efficiency and effectiveness of sewage treatment through intelligent monitoring and regulation.
Smart Images
Figure CN222907718U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment, regeneration and reuse system for a commercial concrete mixing station. Background Technique
[0002] A large amount of water is required for the main machine cleaning of the on-site mixing building of a commercial concrete mixing station, site flushing, environmental and station dust suppression, and cement truck cleaning, etc. At the same time, a large amount of sewage will be generated. This sewage contains cement slurry, aggregates and impurities and mixtures carried by the aggregates. Although the solid content in the sewage is separated by a sand and stone separation device, the separated sewage is strongly alkaline with a high pH value, up to above 13. Direct discharge of this sewage will pollute the environment, and it cannot be directly used for concrete production either.
[0003] The water consumption in the production of a commercial concrete mixing station is large. At the same time, a large amount of sewage generated by the commercial concrete mixing station can neither be discharged nor directly utilized. The water used in the commercial concrete mixing station comes from groundwater resources or industrial water pipe networks, and the water intake cost is relatively high. To reduce the production water cost of the commercial concrete mixing station, and at the same time with the enhancement of people's environmental protection awareness, it is required that the sewage generated by the commercial concrete mixing station can be reasonably recycled. Currently, the commercial concrete mixing station treats the generated sewage in the following ways:
[0004] 1. The water after the sewage is precipitated or pressure-filtered is mixed with a certain proportion of clean water and reused in production, but this method can only be used for the production of low-grade ordinary concrete (concrete grade lower than C20).
[0005] 2. The sewage is recycled internally after being pressure-filtered, and this method can only be reused for truck cleaning, site flushing, and main machine cleaning of the mixing building.
[0006] 3. The reclaimed water is reused after pH adjustment and oxidation treatment. Currently, the pH value of the sewage in the commercial concrete mixing station is adjusted by using organic acids to condition the mixing sewage, and then oxidized by a strong oxidant (such as hydrogen peroxide), and finally reused in production after shallow sedimentation treatment. Although this method can achieve the purpose of reusing reclaimed water, the cost is relatively high, and the strong oxidant has strong corrosiveness and belongs to a regulated transportation product.
[0007] The commercial concrete mixing station has a strong demand for a mixing sewage regeneration and reuse system with low cost and efficient operation. In particular, it is more necessary for the commercial concrete mixing station in places with water resource shortage and strict environmental protection requirements to recycle or discharge the sewage.
[0008] Therefore, we propose a sewage treatment, regeneration and reuse system for a commercial concrete mixing station to solve the above technical problems. Content of the Utility Model
[0009] In order to solve the technical problems existing in the above-mentioned prior art, the utility model proposes a sewage treatment, regeneration and reuse system for a commercial concrete mixing station.
[0010] The technical solution adopted by the utility model is as follows:
[0011] A sewage treatment, regeneration and reuse system for a commercial concrete mixing station, comprising a slope grit chamber, a sewage collection tank, a submersible sewage pump, a solid-liquid separation device, a cleaning and sewage separation tank and a clean water storage tank. An overflow ditch is provided on the slope grit chamber, and the overflow ditch is communicated with the sewage collection tank. A first stirrer is arranged in the sewage collection tank. A water suction pipe and a water discharge pipe are communicated with the submersible sewage pump, and are respectively communicated with the sewage collection tank and the solid-liquid separation device. The water outlet of the solid-liquid separation device is communicated with a conditioning device for adjusting the pH value. A pH detection instrument is arranged in the conditioning device. The conditioning device is communicated with a primary discharge pipeline, and a control valve is arranged on the primary discharge pipeline. The cleaning and sewage separation tank is communicated with the primary discharge pipeline, and the overflow port of the cleaning and sewage separation tank flows into the clean water storage tank through a pipeline.
[0012] In a further technical solution, the solid-liquid separation device includes an operation platform and a filter press installed on the operation platform. The water inlet of the filter press is communicated with the water discharge pipe, and the water outlet of the filter press is communicated with the conditioning device.
[0013] In a further technical solution, it further includes a high-level tank. The water discharge pipe is communicated with the water inlet of the high-level tank. The water outlet of the high-level tank is communicated with a feed pump through a pipeline. The feed pump is communicated with the solid-liquid separation device through a pipeline. The overflow port of the high-level tank flows into the sewage collection tank through a pipeline.
[0014] In a further technical solution, the conditioning device includes a conditioning tank body, a hydraulic stirring component and a conditioning gas input pipe. The water inlet of the conditioning tank body is communicated with the water outlet of the solid-liquid separation device through a pipeline. The water outlet of the conditioning tank body is communicated with a pipeline mixer. The stirring end of the hydraulic stirring component is installed in the conditioning tank body. The conditioning gas input pipe is communicated with the conditioning tank body.
[0015] In a further technical solution, the cleaning and sewage separation tank includes a separation tank body and a central cylinder installed in the separation tank body. An overflow pipe is communicated at the overflow port of the separation tank body, and the overflow pipe is communicated with the clean water storage tank through a pipeline.
[0016] In a further technical solution, a sewage discharge port is provided at the bottom of the separation tank body, and the sewage discharge port is communicated with the sewage collection tank through a pipeline with a valve.
[0017] In a further technical solution, it further includes a chemical dosing device. The chemical dosing device includes a chemical mixing tank and a chemical storage tank. A second stirrer is installed inside the chemical mixing tank. The chemical mixing tank is installed on the chemical storage tank and is communicated with the chemical storage tank. The chemical storage tank is communicated with the primary discharge pipeline through a pipeline. A chemical mixer is arranged at the port of the primary discharge pipeline where it is connected to the cleaning and sewage separation tank.
[0018] In a further technical solution, the water outlet of the clean water storage tank is connected to a water quality detection box through a pipeline, and a water quality detection instrument is arranged in the water quality detection box.
[0019] In a further technical solution, a mechanical filter is arranged on the pipeline connecting the clean water storage tank and the water quality detection box.
[0020] In a further technical solution, a water quality detection room is further included, and the control ends of the pH detection instrument and the water quality detection instrument are both installed in the water quality detection room.
[0021] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:
[0022] Reduce environmental pollution: Through preliminary sedimentation and solid-liquid separation, most of the solid impurities in the sewage are removed, and the pH value is adjusted through the conditioning device, so that the treated water can be discharged or recycled, effectively reducing environmental pollution.
[0023] Save water cost: Through the regeneration and reuse system, the commercial concrete mixing station can recycle the sewage, reduce the dependence on groundwater resources or industrial water, and reduce the water use cost.
[0024] Save energy: There is a height difference between the water outlets and inlets of some equipment. Through the way of overflow, the energy consumption of the equipment at the production site can be saved and the operation cost can be reduced.
[0025] Intelligent monitoring and adjustment: Through the coordinated use of the pH detection instrument and the control valve, the intelligent monitoring and adjustment of the sewage treatment process are realized, ensuring that the pH value of the recycled water is suitable for reuse, and improving the sewage treatment effect and efficiency. Description of the drawings
[0026] The present utility model will be described by way of examples and with reference to the drawings, wherein:
[0027] Figure 1 is a schematic structural diagram of the present utility model;
[0028] Figure 2 is Figure 1 a partial enlarged schematic diagram at position A in
[0029] Figure 3 is a schematic structural diagram of the solid-liquid separation device of the present utility model;
[0030] Figure 4 is a schematic structural diagram of the sewage and sludge separation tank of the present utility model;
[0031] Figure 5 is a schematic structural diagram of the conditioning device of the present utility model;
[0032] Figure 6This is a schematic structural diagram of the chemical dosing device of the present utility model.
[0033] Reference numerals: 1 - inclined sedimentation tank, 2 - sewage collection tank, 3 - solid-liquid separation device, 301 - operation platform, 302 - filter press, 4 - sewage and sludge separation tank, 401 - separation tank body, 402 - central cylinder, 403 - overflow pipe, 404 - sewage discharge port, 5 - clean water storage tank, 6 - overflow ditch, 7 - water outlet pipe, 8 - conditioning device, 801 - conditioning tank body, 802 - hydraulic stirring assembly, 803 - conditioning gas input pipe, 9 - primary discharge pipeline, 10 - control valve, 11 - elevated tank, 12 - feed pump, 13 - chemical dosing device, 1301 - mixing tank, 1302 - chemical storage tank, 1303 - second stirrer, 14 - mixer, 15 - water quality detection box, 16 - mechanical filter. Specific embodiments
[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0035] Refer to Figure 1 and Figure 2 , this embodiment provides a commercial concrete mixing station sewage treatment and recycling system, including an inclined sedimentation tank 1, a sewage collection tank 2, a submersible sewage pump, a solid-liquid separation device 3, a sewage and sludge separation tank 4 and a clean water storage tank 5. An overflow ditch 6 is provided on the inclined sedimentation tank 1, and the overflow ditch 6 is communicated with the sewage collection tank 2. A first stirrer is provided in the sewage collection tank 2. The submersible sewage pump is communicated with a water suction pipe and a water outlet pipe 7, which are respectively communicated with the sewage collection tank 2 and the solid-liquid separation device 3. The water outlet of the solid-liquid separation device 3 is communicated with a conditioning device 8 for adjusting the pH value. A pH detection instrument is provided in the conditioning device 8. The conditioning device 8 is communicated with a primary discharge pipeline 9. A control valve 10 is provided on the primary discharge pipeline 9. The sewage and sludge separation tank 4 is communicated with the primary discharge pipeline 9. The overflow port of the sewage and sludge separation tank 4 flows into the clean water storage tank 5 through a pipeline.
[0036] When treating sewage, the sewage generated from the cleaning of the main mixer of the commercial concrete mixing plant, the cleaning of concrete mixer trucks, the site flushing, etc. is collected in the slope grit chamber 1 for preliminary sedimentation; large particle solids in the sewage settle at the bottom of the sedimentation tank, and then the relatively clean sewage on the upper layer overflows to the sewage collection tank 2 through the overflow ditch 6. The first stirrer in the sewage collection tank 2 periodically stirs the sewage to prevent the solid content in the sewage from depositing at the bottom of the tank; when sewage treatment is required, the system controls the operation of the submersible sewage pump, and the sewage in the sewage collection tank 2 is pumped into the solid-liquid separation device 3 through the submersible sewage pump for solid-liquid separation; the filtrate separated by the solid-liquid separation device 3 is transported through a pipeline to the conditioning device 8 for pH adjustment, and is detected in real time by a pH detection instrument; when the pH detection instrument detects that the pH value in the sewage filtrate reaches the set standard, the control valve 10 on the initial discharge pipeline 9 is opened, and the conditioned water is transported into the cleaning and impurity separation tank 4 for cleaning and impurity separation; the cleaning and impurity separation tank 4 further separates the impurities in the sewage, and the clarified water after cleaning and impurity separation flows into the clean water storage tank 5 through a pipeline from the overflow port of the cleaning and impurity separation tank 4 for storage for reuse.
[0037] Through the above design, the beneficial effects are as follows:
[0038] Reduce environmental pollution: Through preliminary sedimentation and solid-liquid separation, most of the solid impurities in the sewage are removed, and the pH is adjusted by the conditioning device 8, so that the treated water can be discharged or recycled, effectively reducing environmental pollution.
[0039] Save water cost: Through the recycling system, the commercial concrete mixing plant can recycle the sewage, reduce the dependence on groundwater resources or industrial water, and reduce the water use cost.
[0040] Save energy: There is a height difference between the water outlets and inlets of some equipment. Through the way of overflow, the energy consumption of the equipment at the production site can be saved and the operation cost can be reduced.
[0041] Intelligent monitoring and adjustment: Through the combined use of the pH detection instrument and the control valve 10, intelligent monitoring and adjustment of the sewage treatment process are realized, ensuring that the pH value of the recycled water is suitable for reuse, and improving the sewage treatment effect and efficiency.
[0042] In a specific embodiment, refer to Figure 1 and Figure 3 The solid-liquid separation device 3 includes an operation platform 301 and a filter press 302 installed on the operation platform 301. The water inlet of the filter press 302 is communicated with the water outlet pipe 7, and the water outlet of the filter press 302 is communicated with the conditioning device 8.
[0043] The solid-liquid separation device 3 efficiently separates solid impurities in sewage through the filter press 302, improving the efficiency and effect of subsequent sewage treatment. The sludge cake generated after separation is transported to the stockyard and can be used as raw materials for brick-making or backfill for the foundation. In addition, an operation platform 301 is provided, enabling operators to easily access and operate various parts of the filter press 302 for daily operation, monitoring, and maintenance, enhancing the operation stability and safety.
[0044] In a specific embodiment, referring to Figure 1 , it further includes a high-level tank 11. The outlet pipe 7 is connected to the water inlet of the high-level tank 11. The water outlet of the high-level tank 11 is connected to a feed pump 12 through a pipeline. The feed pump 12 is connected to the solid-liquid separation device 3 through a pipeline. The overflow port of the high-level tank 11 flows through a pipeline to the sewage collection tank 2.
[0045] The high-level tank 11, as an intermediate storage device, can effectively buffer the fluctuations in the sewage flow rate, ensuring that the sewage can enter the solid-liquid separation device 3 evenly and stably, ensuring the stable operation of the solid-liquid separation device 3, and avoiding equipment failures or reduced treatment efficiency caused by unstable flow rates. The design of the overflow port of the high-level tank 11 ensures that excess sewage can be discharged back to the sewage collection tank 2 in a timely manner, preventing excessive accumulation of sewage in the high-level tank 11 and ensuring the safe operation of the system.
[0046] In a specific embodiment, referring to Figure 5 , the conditioning device 8 includes a conditioning tank body 801, a hydraulic stirring component 802, and a conditioning gas input pipe 803. The water inlet of the conditioning tank body 801 is connected to the water outlet of the solid-liquid separation device 3 through a pipeline. The water outlet of the conditioning tank body 801 is connected to a pipeline mixer. The stirring end of the hydraulic stirring component 802 is installed inside the conditioning tank body 801. The conditioning gas input pipe 803 is connected to the conditioning tank body 801.
[0047] Using a conditioning gas medium to adjust the pH value of alkaline commercial mixed sewage will not cause over-conditioning, nor is it necessary to adopt a precise conditioning control system. In addition, the conditioning gas medium is safe, convenient to store, and has a low price, which can effectively reduce the cost of sewage treatment. Through the hydraulic stirring component 802, the conditioning gas can be evenly distributed in the sewage, improving the efficiency and accuracy of pH value adjustment, effectively enhancing the sewage treatment effect, and ensuring that the treated water quality meets the reuse standard.
[0048] In a specific embodiment, referring to Figure 4 , the sewage and sludge separation tank 4 includes a separation tank body 401 and a central cylinder 402 installed inside the separation tank body 401. The overflow port of the separation tank body 401 is connected to an overflow pipe 403. The overflow pipe 403 is connected to the clean water storage tank 5 through a pipeline.
[0049] During operation, sewage enters the central cylinder 402. Suspended solids in the water body settle inside to form sediment sludge. The clarified water after separation is discharged to the clean water storage tank 5 through the overflow pipe 403, achieving the separation of clean and dirty water, further improving the quality of the treated water, and meeting the reuse standard.
[0050] In a specific embodiment, refer to Figure 1 and Figure 4 , a sewage discharge port 404 is provided at the bottom of the separation tank body 401, and the sewage discharge port 404 is connected to the sewage collection tank 2 through a pipeline with a valve.
[0051] A sewage discharge port 404 is provided at the bottom of the separation tank body 401 and is connected to the sewage collection tank 2 through a pipeline with a valve, which facilitates the regular discharge of sedimented sludge and impurities, simplifies the cleaning process, improves the operation convenience, prevents the long-term accumulation of impurities in the separation tank body 401, timely discharges sediments and impurities, keeps the inside of the separation tank body 401 clean, and helps to improve the overall effect of sewage treatment and the water quality of the effluent.
[0052] In a specific embodiment, refer to Figure 1 and Figure 6 , it further includes a chemical dosing device 13. The chemical dosing device 13 includes a mixing tank 1301 and a chemical storage tank 1302. A second stirrer 1303 is installed inside the mixing tank 1301. The mixing tank 1301 is installed on the chemical storage tank 1302 and is connected to the chemical storage tank 1302. The chemical storage tank 1302 is connected to the primary discharge pipeline 9 through a pipeline, and a mixer 14 is provided at the port of the primary discharge pipeline 9 at the clean and dirty separation tank 4.
[0053] By setting the chemical dosing device 13, mainly using flocculants, it is used to quickly separate the water body from the solid content and improve the water treatment effect. Among them, the second stirrer 1303 can ensure the uniformity of the chemical agent, improve the chemical reaction efficiency with the sewage, and then realize the precise dosing of the chemical agent through the mixer 14, ensure the appropriate dosage of the chemical agent in the sewage treatment process, improve the treatment effect, and avoid the waste of the chemical agent.
[0054] In a specific embodiment, refer to Figure 1 , the water outlet of the clean water storage tank 5 is connected to a water quality detection box 15 through a pipeline, and a water quality detection instrument is provided inside the water quality detection box 15.
[0055] A water quality detection instrument is provided inside the water quality detection box 15, which can monitor the various parameters of the water quality in the clean water storage tank 5 in real time, can timely discover and solve the problems existing in the treatment process, improve the overall sewage treatment effect, ensure that the treated water quality meets the reuse standard, prevent unqualified treated water from being reused in production, and ensure the safety and reliability of the production process.
[0056] In a specific embodiment, refer toFigure 1 A mechanical filter 16 is provided in the pipeline connecting the clean water storage tank 5 and the water quality detection box 15.
[0057] The mechanical filter 16 deeply filters the treated water, further improving the cleanliness of the treated water, preventing these impurities from entering the water quality detection box 15, thereby protecting the water quality detection instrument from damage, extending its service life, and ensuring the detection accuracy.
[0058] In a specific embodiment, it further includes a water quality detection room, and the control ends of the pH detection instrument and the water quality detection instrument are both installed in the water quality detection room.
[0059] All detection instruments are concentrated in the water quality detection room, realizing centralized control and management, improving the detection accuracy and real-time monitoring ability, facilitating maintenance and management, and enhancing the overall effect of the system intelligence level and sewage treatment.
[0060] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. A commercial concrete mixing station wastewater treatment, regeneration and reuse system, characterized in that: The invention comprises a slope grit chamber (1), a sewage collection tank (2), a solid-liquid separation device (3), a cleaning and separation tank (4) and a clean water storage tank (5). The slope grit chamber (1) is provided with an overflow ditch (6), the overflow ditch (6) is connected to the sewage collection tank (2), the sewage collection tank (2) is provided with a first agitator and a submersible sewage pump, the submersible sewage pump is connected with a suction pipe and a water outlet pipe (7), which are respectively connected to the sewage collection tank (2) and the solid-liquid separation device (3), the water outlet of the solid-liquid separation device (3) is connected with a conditioning device (8) for adjusting pH, the conditioning device (8) is provided with a pH detection instrument, the conditioning device (8) is connected with a primary discharge pipeline (9), the primary discharge pipeline (9) is provided with a control valve (10), the cleaning and separation tank (4) is connected with the primary discharge pipeline (9), and the overflow of the cleaning and separation tank (4) flows into the clean water storage tank (5) through a pipeline.
2. A commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 1, characterized in that: The solid-liquid separation device (3) comprises an operating platform (301) and a filter press (302) installed on the operating platform (301), wherein the water inlet of the filter press (302) is connected to a water outlet pipe (7), and the water outlet of the filter press (302) is connected to a conditioning device (8).
3. A commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 1, characterized in that: It also includes a high-level tank (11), the water outlet pipe (7) is connected to the water inlet of the high-level tank (11), the water outlet of the high-level tank (11) is connected to a feed pump (12) through a pipeline, the feed pump (12) is connected to the solid-liquid separation device (3) through a pipeline, and the overflow port of the high-level tank (11) flows to the sewage collection tank (2) through a pipeline.
4. A commercial concrete mixing station wastewater treatment, regeneration and reuse system according to any one of claims 1 to 3, characterized in that: The tempering device (8) comprises a tempering tank body (801), a hydraulic stirring assembly (802) and a tempering gas input pipe (803); the water inlet of the tempering tank body (801) is connected to the water outlet of the solid-liquid separation device (3) through a pipeline; the water outlet of the tempering tank body (801) is connected to a pipeline mixer; the stirring end of the hydraulic stirring assembly (802) is installed in the tempering tank body (801); and the tempering gas input pipe (803) is connected to the tempering tank body (801).
5. The commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 1 is characterized in that: The cleaning and separation tank (4) comprises a separation tank body (401) and a central tube (402) installed in the separation tank body (401); an overflow pipe (403) is connected to the overflow port of the separation tank body (401); and the overflow pipe (403) is connected to the clean water storage tank (5) through a pipeline.
6. A commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 5, characterized in that: The bottom of the separation tank (401) is provided with a sewage outlet (404), and the sewage outlet (404) is connected to the sewage collection tank (2) through a pipeline with a valve.
7. The commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 1 is characterized in that: The invention also comprises a drug adding device (13), wherein the drug adding device (13) comprises a drug mixing tank (1301) and a drug storage tank (1302), wherein a second agitator (1303) is installed inside the drug mixing tank (1301), wherein the drug mixing tank (1301) is installed on the drug storage tank (1302) and is connected to the drug storage tank (1302), wherein the drug storage tank (1302) is connected to a primary discharge pipe (9) through a pipe, and wherein a drug mixer (14) is provided at a port of the cleaning and separation tank (4).
8. The commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 1 is characterized in that: The water outlet of the clean water storage tank (5) is connected to a water quality detection box (15) through a pipeline, and a water quality detection instrument is arranged in the water quality detection box (15).
9. A commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 8, characterized in that: The pipeline connecting the clean water storage tank (5) and the water quality detection box (15) is provided with a mechanical filter (16).
10. The commercial concrete mixing station wastewater treatment, regeneration and reuse system according to claim 1, characterized in that: It also includes a water quality testing room, in which the pH testing instrument and the control end of the water quality testing instrument are both installed.