Wastewater treatment device for waterworks

Abstract

The utility model relates to the technical field of water treatment, in particular to a comprehensive utilization device for wastewater treatment of a waterworks. The technical problems that in the running process of the waterworks, waste water generated by the waterworks cannot be effectively collected and treated, so that the water utilization efficiency is low, and the water treatment cost is high are solved. According to the technical scheme, the wastewater treatment and comprehensive utilization device for the waterworks mainly comprises integrated water purification equipment, a backwashing water collection tank, a sludge concentration tank, rapid sedimentation treatment equipment and the like. According to the utility model, the sewage generated in the running process of the waterworks can be collected and treated by the rapid sedimentation treatment equipment, the treated wastewater can be recycled, and a part of the wastewater is mixed with raw water to be further utilized before being conveyed to a flocculation reaction tank of the waterworks by a water pump, so that the utilization rate of water resources can be obviously improved; and one part of the system can be used for agricultural irrigation and environment greening of the plant area of the water plant.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a wastewater treatment device for a waterworks. Background Art

[0002] The production wastewater of a waterworks includes two parts: the sludge water discharged from the flocculation reaction tank, sedimentation tank and the backwashing water of the filter tank, generally accounting for 4% - 9% of the water production of the waterworks. In these two parts of wastewater, the backwashing water of the filter tank is generally 5 - 10 times that of the sludge water discharged from the sedimentation tank. It can be seen that the backwashing water of the filter tank accounts for about 3% - 7% of the water production of the waterworks. For cities in the arid northwestern region of China, especially for cities with long-distance water transmission, recycling the wastewater of the waterworks can not only save water resources, improve the operation capacity of the waterworks, but also reduce the operation cost and the discharge amount of wastewater, having good social and economic benefits.

[0003] However, most of the existing wastewater treatment devices have a single structure, unable to effectively collect and treat the wastewater generated by the waterworks, resulting in low sedimentation efficiency, poor treatment effect, inconvenient installation and use, thus reducing both economic and social benefits, and extremely affecting the use convenience of the entire wastewater treatment device. Summary of the Utility Model

[0004] In order to overcome the problems that in the process of using the wastewater treatment device, due to the inability to effectively collect and treat the wastewater generated by the waterworks, the sedimentation efficiency is low, the treatment effect is poor, the installation and use are inconvenient, thus reducing both economic and social benefits.

[0005] The technical solution of the utility model is: a wastewater treatment device for a waterworks, including a main inlet pipe, and also including a flocculant dosing system, an integrated water purification device, a disinfectant dosing system, a clear water tank, a water supply pump, a first sludge discharge valve, a second sludge discharge valve, a drain valve, a backwashing water collection tank, a third sludge discharge valve, a sludge thickening tank, a fourth sludge discharge valve, a sludge dewatering device, a water supply pump, a rapid sedimentation treatment device and a wastewater reuse pump. The main inlet pipe is connected to the integrated water purification device through the flocculant dosing system. The right end of the integrated water purification device is provided with a clear water tank through the disinfectant dosing system. The right output end of the clear water tank is connected to a water supply pump. The output end of the water supply pump is provided with a tap water user. The output end of the drain valve is installed with a backwashing water collection tank. The front output end of the backwashing water collection tank is connected to a third sludge discharge valve.

[0006] Preferably, by setting up an integrated water purification device, which features integrating reaction, sedimentation, and filtration processes, it has a compact structure, occupies a small area, has a short construction period, and good effluent water quality. Then, through the sludge thickening tank, the sludge in the thickening tank can be removed in a timely manner to maintain the normal operation of the tank. Next, through the sludge dewatering equipment, the moisture content can be further reduced to reduce the sludge volume and facilitate transportation. Then, through the rapid sedimentation treatment equipment, the flow rate can be reduced, disturbance can be minimized, rapid sedimentation can be achieved, and the treatment efficiency and treatment effect can be improved. The sludge collecting hopper and the fifth sludge discharge valve can collect and discharge the sludge from the rapid sedimentation treatment equipment and transport it to the sludge thickening tank for further concentration treatment. After treatment, a part of it is pumped by the wastewater reuse pump and conveyed to the front of the flocculation reaction tank of the water plant to be mixed with the raw water for further utilization, and a part can be used for agricultural irrigation and the environmental greening of the water plant factory area, thus greatly improving the usability of the entire wastewater treatment device.

[0007] Preferably, the integrated water purification device includes a microporous grid flocculation tank, a variable load inclined tube sedimentation tank, and a quartz sand rapid filtration tank. The output end of the microporous grid flocculation tank is connected to a first sludge discharge valve, the output end of the variable load inclined tube sedimentation tank is equipped with a second sludge discharge valve, and the output end of the quartz sand rapid filtration tank is provided with a drain valve. It features integrating reaction, sedimentation, and filtration processes, has a compact structure, occupies a small area, has a short construction period, and good effluent water quality.

[0008] Preferably, a sludge thickening tank is arranged at the front side output end of the first sludge discharge valve and the second sludge discharge valve, which can timely remove the sludge in the thickening tank to maintain the normal operation of the tank. Through processes such as sedimentation, thickening, and sludge discharge, the concentration of solid particles and organic matter in the sewage is achieved, the load of the treatment system is reduced, and the treatment efficiency is improved. It plays a crucial role in the water treatment system and is one of the important devices for realizing sewage treatment and resource recovery.

[0009] Preferably, a fourth sludge discharge valve is installed at the front end of the sludge thickening tank, and the output end of the fourth sludge discharge valve is connected to sludge dewatering equipment. Since the sludge is still in a liquid flowing state and has a large volume after concentration and cannot be transported and disposed of, in order to further reduce the moisture content and make the moisture content of the sludge as low as possible, the sludge must be dewatered to reduce the sludge volume and facilitate transportation.

[0010] Preferably, a water supply pump is installed on the right side of the backwash water collection tank, and a rapid sedimentation treatment equipment is arranged at the right end of the water supply pump. It can collect the quartz sand filter backwash wastewater and the supernatant of the sludge sedimentation tank generated by the water treatment plant and use the water supply pump to send it to the rapid sedimentation treatment equipment for further treatment.

[0011] Preferably, the rapid sedimentation treatment equipment includes a water inlet pipe, a water distribution pipe, a water outlet pipe, a sludge hopper, a sludge discharge pipe, a fifth sludge discharge valve, an inclined tube sedimentation layer, a water outlet cap, and a water collection tank. The water inlet pipe is arranged at the lower left end of the rapid sedimentation treatment equipment. The inclined tube sedimentation layer is located in the middle part with a height of about 100 cm. The inclined tube sedimentation layer is made of PE material and has a hexagonal shape, which can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, and improve the treatment efficiency and effect.

[0012] Preferably, a water distribution pipe is provided below 50 cm of the inclined tube sedimentation layer to reduce the flow rate, reduce disturbance, achieve rapid sedimentation, and improve the treatment efficiency and effect.

[0013] Preferably, the water outlet cap is located at the upper end. A water collection tank is arranged at the upper end of the water outlet cap. The right output end of the water collection tank is connected to a water outlet pipe, which is convenient for rough filtration of the outlet water, can reduce the turbidity of the outlet water, and improve the treatment effect.

[0014] Preferably, the sludge hopper is located at the bottom. The lower end of the sludge hopper is connected to a sludge discharge pipe, and a fifth sludge discharge valve is arranged on the sludge discharge pipe, which can collect and discharge the sludge of the rapid sedimentation treatment equipment and transport it to the sludge thickening tank for further thickening treatment.

[0015] Preferably, the right output end of the rapid sedimentation treatment equipment is connected to a wastewater reuse pump. After treatment, part of the water is transported by the wastewater reuse pump to be mixed with the raw water before the flocculation reaction tank of the water plant for further utilization, which can significantly improve the utilization rate of water resources, reduce the operation cost of the water plant, and improve the economic benefits of the water plant. Part of the water can be used for agricultural irrigation and the environmental greening of the water plant factory area.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. By setting a composite structure of an integrated water purification equipment, a sludge thickening tank, a sludge dewatering equipment, a rapid sedimentation treatment equipment, and a wastewater reuse pump to replace the original single structure, it has the characteristics of integrating reaction, sedimentation, and filtration processes, can remove the sludge in the thickening tank, dehydrate the sludge to reduce the sludge volume and facilitate transportation, can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, improve the treatment efficiency and effect, can also collect and discharge the sludge of the rapid sedimentation treatment equipment, and can transport the water to be mixed with the raw water before the flocculation reaction tank of the water plant for further utilization according to the use needs, and use the water for agricultural irrigation and the environmental greening of the water plant factory area, thereby improving the use convenience of the entire wastewater treatment device to a certain extent;

[0018] 2. Through the comprehensive utilization system for the wastewater treatment of the waterworks, PLC full-automatic operation can be realized;

[0019] 3. The integrated water purification equipment features integrating reaction, sedimentation, and filtration processes, with a compact structure, small floor area, short construction period, and good effluent quality.

[0020] 4. The sludge thickening tank can timely remove the sludge in the thickening tank to maintain the normal operation inside. Through processes such as sedimentation, thickening, and sludge discharge, the concentration of solid particles and organic matter in the sewage is achieved, reducing the load of the treatment system and improving the treatment efficiency.

[0021] 5. Through the sludge dewatering equipment, since the sludge is still in a liquid flowing state and has a large volume after concentration and cannot be transported and disposed of, in order to further reduce the moisture content and make the moisture content of the sludge as low as possible, the sludge must be dewatered to reduce the sludge volume and facilitate transportation.

[0022] 6. Through the rapid sedimentation treatment equipment, the inclined tube sedimentation layer and the water distribution pipe can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, improve the treatment efficiency and effect. The effluent water cap is convenient for rough filtration of the effluent, which can reduce the effluent turbidity and improve the treatment effect. The sludge hopper and the fifth sludge discharge valve can collect and discharge the sludge of the rapid sedimentation treatment equipment and transport it to the sludge thickening tank for further concentration treatment.

[0023] 7. Through the wastewater reuse pump, part of the treated water is transported to the front of the flocculation reaction tank of the water plant and mixed with the raw water for further utilization, which can significantly improve the utilization rate of water resources, reduce the operation cost of the water plant, and improve the economic benefits of the water plant. Part of it can be used for agricultural irrigation and the environmental greening of the water plant factory area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The first three-dimensional structural schematic diagram of the positioning drilling device for door and window processing of the present utility model is shown.

[0025] Description of the reference numerals: 1 - total inlet pipe, 2 - flocculant dosing system, 3 - integrated water purification equipment, 31 - microporous grid flocculation tank, 32 - variable load inclined tube sedimentation tank, 33 - quartz sand rapid filter, 4 - disinfectant dosing system, 5 - clear water tank, 6 - water supply pump, 7 - first sludge discharge valve, 8 - second sludge discharge valve, 9 - drain valve, 10 - backwash water collection tank, 11 - third sludge discharge valve, 12 - sludge thickening tank, 13 - fourth sludge discharge valve, 14 - sludge dewatering equipment, 15 - feed water pump, 16 - rapid sedimentation treatment equipment, 161 - inlet pipe, 162 - water distribution pipe, 163 - outlet pipe, 164 - sludge hopper, 165 - sludge discharge pipe, 166 - fifth sludge discharge valve, 167 - inclined tube sedimentation layer, 168 - effluent water cap, 169 - water collection trough, 17 - wastewater reuse pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Please refer to Figure 1, the present utility model provides an embodiment: a wastewater treatment device for a waterworks, including a main inlet pipe 1, and further including a flocculant dosing system 2, an integrated water purification device 3, a disinfectant dosing system 4, a clear water tank 5, a water supply pump 6, a first sludge discharge valve 7, a second sludge discharge valve 8, a quartz sand filter tank drain valve 9, a backwash water collection tank 10, a third sludge discharge valve 11, a sludge thickening tank 12, a fourth sludge discharge valve 13, a sludge dewatering device 14, a water supply pump 15, a rapid sedimentation treatment device 16, and a wastewater reuse pump 17. The main inlet pipe 1 is connected to the integrated water purification device 3 through the flocculant dosing system 2. The integrated water purification device 3 includes a microporous grid flocculation tank 31, a variable load inclined tube sedimentation tank 32, and a quartz sand rapid filtration tank 33. The output end of the microporous grid flocculation tank 31 is connected to the first sludge discharge valve 7. The output end of the variable load inclined tube sedimentation tank 32 is equipped with the second sludge discharge valve 8. The output end of the quartz sand rapid filtration tank 33 is provided with a drain valve 9, which has the characteristics of integrating reaction, sedimentation, and filtration processes, with a compact structure, small floor area, short construction period, and good effluent quality. The right end of the integrated water purification device 3 is provided with the clear water tank 5 through the disinfectant dosing system 4. The right output end of the clear water tank 5 is connected to the water supply pump 6. The output end of the water supply pump 6 is provided with tap water users. The output end of the drain valve 9 is installed with the backwash water collection tank 10. The front output end of the backwash water collection tank 10 is connected to the third sludge discharge valve 11. The front output ends of the first sludge discharge valve 7 and the second sludge discharge valve 8 are provided with the sludge thickening tank 12, which can timely remove the sludge in the thickening tank and maintain the normal operation in the tank. Through processes such as sedimentation, thickening, and sludge discharge, the concentration of solid particles and organic matter in the sewage is realized, the load of the treatment system is reduced, and the treatment efficiency is improved. It plays a crucial role in the water treatment system and is one of the important devices for realizing sewage treatment and resource recovery. The front end of the sludge thickening tank 12 is installed with the fourth sludge discharge valve 13. The output end of the fourth sludge discharge valve 13 is connected to the sludge dewatering device 14. Since the sludge is still in a liquid flowing state and has a large volume after concentration and cannot be transported and disposed of, in order to further reduce the moisture content and make the moisture content of the sludge as low as possible, the sludge must be dewatered to reduce the sludge volume and facilitate transportation. The right side of the backwash water collection tank 10 is installed with the water supply pump 15. The right end of the water supply pump 15 is provided with the rapid sedimentation treatment device 16, which can collect the backwash wastewater of the quartz sand filter tank and the supernatant of the sludge sedimentation tank generated by the waterworks and send it into the rapid sedimentation treatment device 16 through the water supply pump 15 for further treatment. The rapid sedimentation treatment device 16 includes an inlet pipe 161, a water distribution pipe 162, an outlet pipe 163, a sludge collection hopper 164, a sludge discharge pipe 165, a fifth sludge discharge valve 166, an inclined tube sedimentation layer 167, an outlet water cap 168, and a water collection tank 169. The left lower end of the rapid sedimentation treatment device 16 is provided with the inlet pipe 161. The inclined tube sedimentation layer 167 is located in the middle part, with a height of about 100 cm. The inclined tube sedimentation layer 167 is made of PE material and has a hexagonal shape.It can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, improve the treatment efficiency and treatment effect. There is a water distribution pipe 162 below 16750 cm of the inclined tube sedimentation layer, which can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, improve the treatment efficiency and treatment effect. The effluent water cap 168 is located at the upper end. There is a collecting trough 169 arranged at the upper end of the effluent water cap 168. The right output end of the collecting trough 169 is connected with an effluent pipe 163, which is convenient for rough filtration of the effluent, can reduce the effluent turbidity and improve the treatment effect. The sludge hopper 164 is located at the bottom position. The lower end of the sludge hopper 164 is connected with a sludge discharge pipe 165. A fifth sludge discharge valve 166 is arranged on the sludge discharge pipe 165, which can collect and discharge the sludge of the rapid sedimentation treatment equipment 16 and transport it to the sludge thickening tank 12 for further thickening treatment. The right output end of the rapid sedimentation treatment equipment 16 is connected with a wastewater reuse pump 17. After treatment, a part of it is transported by the wastewater reuse pump 17 to be mixed with the raw water before the flocculation reaction tank of the water plant for further utilization, which can significantly improve the utilization rate of water resources, reduce the operation cost of the water plant and improve the economic benefit of the water plant. A part can be used for agricultural irrigation and the environmental greening of the water plant factory area.,

[0028] When the wastewater treatment device is working, first, through the integrated water purification equipment 3, which has the characteristics of integrating reaction, sedimentation and filtration processes, with a compact structure, small floor area and short construction period. The front output ends of the first sludge discharge valve 7 and the second sludge discharge valve 8 are provided with a sludge thickening tank 12, which can timely remove the sludge in the thickening tank and maintain the normal operation in the tank. Through processes such as sedimentation, thickening and sludge discharge, the concentration of solid particles and organic matter in the sewage is realized, the load of the treatment system is reduced, and the treatment efficiency is improved. It plays a crucial role in the water treatment system and is one of the important equipment for realizing sewage treatment and resource recovery;

[0029] Then, through the sludge dewatering equipment 14, since the sludge is still in a liquid flowing state and has a large volume after concentration and cannot be transported and disposed of. In order to further reduce the water content and make the water content of the sludge as low as possible, the sludge must be dewatered to reduce the sludge volume and facilitate transportation;

[0030] Then, through the rapid sedimentation treatment device 16, the inclined tube sedimentation layer 167 is located in the middle part with a height of about 100 cm. The inclined tube sedimentation layer 167 is made of PE material and is hexagonal in shape, which can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, improve the treatment efficiency and treatment effect. Below 50 cm of the inclined tube sedimentation layer 167, there is a water distribution pipe 162, which can reduce the flow rate, reduce disturbance, achieve rapid sedimentation, improve the treatment efficiency and treatment effect. The effluent water cap 168 is located at the upper end, facilitating coarse filtration of the effluent, reducing the effluent turbidity and improving the treatment effect. The sludge hopper 164 is located at the bottom. The lower end of the sludge hopper 164 is connected to a sludge discharge pipe 165. A fifth sludge discharge valve 166 is arranged on the sludge discharge pipe 165, which can collect and discharge the sludge of the rapid sedimentation treatment device 16 and transport it to the sludge thickening tank 12 for further thickening treatment. The right output end of the rapid sedimentation treatment device 16 is connected to a wastewater reuse pump 17. After treatment, a part of the water is transported by the wastewater reuse pump 17 to be mixed with the raw water before the flocculation reaction tank of the water plant for further utilization, which can significantly improve the utilization rate of water resources, reduce the operation cost of the water plant, and improve the economic benefits of the water plant. A part can be used for agricultural irrigation and the environmental greening of the water plant factory area.

[0031] Through the above steps, the integrated water purification device 3 is set, which has the characteristics of integrating reaction, sedimentation, and filtration processes, with a compact structure, small floor area, short construction period, and good effluent water quality. Then, through the sludge thickening tank 12, the sludge in the thickening tank can be removed in time to keep the normal operation in the tank. Then, through the sludge dewatering device 14, the sludge volume can be reduced and it is convenient for transportation. Then, through the rapid sedimentation treatment device 16, the flow rate can be reduced, the disturbance can be reduced, rapid sedimentation can be achieved, and the treatment efficiency and treatment effect can be improved. The sludge hopper 164 and the fifth sludge discharge valve 166 can collect and discharge the sludge of the rapid sedimentation treatment device 16 and transport it to the sludge thickening tank 12 for further thickening treatment. The right output end of the rapid sedimentation treatment device 16 is connected to a wastewater reuse pump 17. After treatment, a part of the water is transported by the wastewater reuse pump 17 to be mixed with the raw water before the flocculation reaction tank of the water plant for further utilization, and a part can be used for agricultural irrigation and the environmental greening of the water plant factory area, thereby greatly improving the convenience of use of the entire wastewater treatment device.

[0032] The above has described in detail the embodiments of the present invention in conjunction with the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A wastewater treatment device for a waterworks, comprising a main inlet pipe (1); characterized in that: It also includes a flocculant dosing system (2), an integrated water purification device (3), a disinfectant dosing system (4), a clear water tank (5), a water supply pump (6), a first sludge discharge valve (7), a second sludge discharge valve (8), a drain valve (9), a backwash water collection tank (10), a third sludge discharge valve (11), a sludge thickening tank (12), a fourth sludge discharge valve (13), a sludge dewatering device (14), a feed water pump (15), a rapid sedimentation treatment device (16) and a wastewater reuse pump (17). The total inlet pipe (1) is connected to the integrated water purification device (3) through the flocculant dosing system (2). The right end of the integrated water purification device (3) is provided with a clear water tank (5) through the disinfectant dosing system (4). The right output end of the clear water tank (5) is connected to a water supply pump (6). The output end of the water supply pump (6) is provided with a tap water user. The output end of the drain valve (9) is installed with a backwash water collection tank (10). The front output end of the backwash water collection tank (10) is connected to a third sludge discharge valve (11).

2. The wastewater treatment device for a waterworks according to claim 1, characterized in that: The integrated water purification device (3) includes a microporous grid flocculation tank (31), a variable load inclined tube sedimentation tank (32) and a quartz sand rapid filtration tank (33). The output end of the microporous grid flocculation tank (31) is connected to a first sludge discharge valve (7). The output end of the variable load inclined tube sedimentation tank (32) is installed with a second sludge discharge valve (8). The output end of the quartz sand rapid filtration tank (33) is provided with a drain valve (9).

3. The wastewater treatment device for a waterworks according to claim 2, characterized in that: The front output ends of the first sludge discharge valve (7) and the second sludge discharge valve (8) are provided with a sludge thickening tank (12).

4. A wastewater treatment device for a waterworks according to claim 3, characterized in that: The front end of the sludge thickening tank (12) is installed with a fourth sludge discharge valve (13). The output end of the fourth sludge discharge valve (13) is connected to a sludge dewatering device (14).

5. The wastewater treatment device for a waterworks according to claim 1, wherein: A feed water pump (15) is installed on the right side of the backwash water collection tank (10). The right end of the feed water pump (15) is provided with a rapid sedimentation treatment device (16).

6. A wastewater treatment device for a waterworks according to claim 1, characterized in that: The rapid sedimentation treatment device (16) includes an inlet pipe (161), a water distribution pipe (162), an outlet pipe (163), a sludge collection hopper (164), a sludge discharge pipe (165), a fifth sludge discharge valve (166), an inclined tube sedimentation layer (167), an outlet water cap (168), a water collection trough (169). The left lower end of the rapid sedimentation treatment device (16) is provided with an inlet pipe (161). The inclined tube sedimentation layer (167) is located in the middle part, with a height of about 100 cm. The inclined tube sedimentation layer (167) is made of PE material and has a hexagonal shape.

7. An apparatus for treating wastewater from a waterworks according to claim 6, characterized in that: The water distribution pipe (162) is provided below 50 cm of the inclined tube sedimentation layer (167).

8. A wastewater treatment device for a waterworks according to claim 6, characterized in that: The outlet water cap (168) is located at the upper end. The upper end of the outlet water cap (168) is provided with a water collection trough (169). The right output end of the water collection trough (169) is connected to an outlet pipe (163).

9. A wastewater treatment device for a waterworks according to claim 6, characterized in that: The sludge collection hopper (164) is located at the bottom. The lower end of the sludge collection hopper (164) is connected to a sludge discharge pipe (165). The fifth sludge discharge valve (166) is provided on the sludge discharge pipe (165).

10. A wastewater treatment device for a waterworks according to claim 1, characterized in that: The right output end of the rapid sedimentation treatment device (16) is connected to a wastewater reuse pump (17).

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