Integrated ultrafiltration device for high-turbidity wastewater treatment

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an integrated ultrafiltration device for high-turbidity wastewater treatment, which comprises an ultrafiltration assembly and a backwashing assembly. Wherein one end of the ultrafiltration assembly is respectively communicated with a return pipe and a water outlet pipe, the other end of the ultrafiltration assembly is respectively communicated with a water inlet pipe group and a blow-off pipe, and the return pipe can enable liquid to flow back into the water inlet pipe group; the backwashing assembly comprises a gas backwashing pipe and a water backwashing pipe, the water backwashing pipe is communicated with the water outlet pipe, one end, far away from the water outlet pipe, of the water backwashing pipe is communicated with a backwashing pump, the backwashing pump can convey water to the ultrafiltration assembly through the water backwashing pipe and the water outlet pipe, the gas backwashing pipe is communicated with the water backwashing pipe, and the water backwashing pipe is communicated with the water backwashing pipe. And the gas backwashing pipe can convey gas to the ultrafiltration assembly through the water backwashing pipe and the water outlet pipe. The sewage treatment device has the effect of reducing the possibility of reducing the sewage treatment effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and in particular to an integrated ultrafiltration device for high-turbidity wastewater treatment. BACKGROUND

[0002] At present, with the acceleration of industrialization and population growth, water pollution problems are becoming increasingly serious, and in particular, the treatment of high-turbidity wastewater has become an important issue in the field of environmental protection. High-turbidity wastewater contains a large amount of suspended solids, colloids, microorganisms and other pollutants. The presence of these pollutants not only affects the natural purification capacity of water bodies, but also poses a threat to human health and the social environment. In related technologies, ultrafiltration membranes are often used to treat wastewater to effectively separate micro-particle matter in water.

[0003] For the related technologies in the above: in actual use, the ultrafiltration membrane is easily clogged by impurities in the water, thereby easily causing membrane pollution, and further easily leading to a reduction in wastewater treatment effect. CONTENT OF THE UTILITY MODEL

[0004] In order to reduce the possibility of reducing the wastewater treatment effect, the present application provides an integrated ultrafiltration device for high-turbidity wastewater treatment.

[0005] The integrated ultrafiltration device for high-turbidity wastewater treatment provided by the present application adopts the following technical solution:

[0006] An integrated ultrafiltration device for high-turbidity wastewater treatment comprises:

[0007] An ultrafiltration assembly, one end of the ultrafiltration assembly is respectively communicated with a backflow pipe and a water outlet pipe, the other end of the ultrafiltration assembly is respectively communicated with a water inlet pipe group and a sewage pipe, and the backflow pipe can backflow liquid into the water inlet pipe group.

[0008] A backwashing assembly, comprising a gas backwashing pipe and a water backwashing pipe, the water backwashing pipe is communicated with the water outlet pipe, one end of the water backwashing pipe away from the water outlet pipe is communicated with a backwashing pump, the backwashing pump can supply water to the ultrafiltration assembly through the water backwashing pipe and the water outlet pipe, the gas backwashing pipe is communicated with the water backwashing pipe, and the gas backwashing pipe can supply gas to the ultrafiltration assembly through the water backwashing pipe and the water outlet pipe.

[0009] By adopting the above technical scheme, when sewage needs to be treated, the sewage is first conveyed into the ultrafiltration assembly by the water inlet pipe group, so that the ultrafiltration assembly filters the sewage, and the water produced by the ultrafiltration assembly after filtration can be discharged through the water outlet pipe, and the other part of the concentrated water can flow back into the water inlet pipe group, so as to realize cross-flow anti-fouling on the surface of the ultrafiltration assembly, thereby facilitating reduction of the plugging rate of the ultrafiltration assembly and reduction of the possibility of plugging of the ultrafiltration assembly. At the same time, when the ultrafiltration assembly needs to be cleaned, gas is first conveyed into the ultrafiltration assembly by the gas backwashing pipe, so that the pollutants in the ultrafiltration assembly are loosened, and then the backwashing pump is started, and the backwashing pump conveys cleaning water into the ultrafiltration assembly through the water backwashing pipe and the water outlet pipe, so as to remove the pollutants in the ultrafiltration assembly, thereby facilitating backwashing of the ultrafiltration assembly, preventing membrane pollution caused by plugging of the ultrafiltration assembly, reducing the possibility of reduction of the sewage treatment effect to a certain extent, improving the filtration efficiency and stability of the ultrafiltration device, and reducing the maintenance cost. The integrated ultrafiltration device has the characteristics of high efficiency, energy saving and environmental protection.

[0010] Optionally, the water inlet pipe group comprises a source water pump and a water inlet pipe, the water inlet pipe is in communication with the source water pump and the ultrafiltration assembly respectively, and electromagnetic valves are arranged on the water inlet pipe, the blowdown pipe, the backflow pipe, the water outlet pipe, the gas backwashing pipe and the water backwashing pipe respectively. Manual valves are arranged on the water inlet pipe, the backflow pipe and the water outlet pipe respectively, and the manual valves are used for adjusting flow.

[0011] By adopting the above technical scheme, the integrated ultrafiltration device can ensure stable water inlet pressure and improve filtration efficiency by arranging the source water pump and the water inlet pipe. The electromagnetic valves and the manual valves arranged on each pipe not only realize accurate control of water flow direction and flow, but also can flexibly switch operation modes under different working conditions, thereby improving the reliability and operation convenience of the system. In particular, the design of the manual valves makes it more convenient to adjust the flow during on-site installation and debugging, thereby ensuring the stability of system operation. In addition, the automatic control function of the electromagnetic valves further improves the automation level of the entire system, reduces manual intervention, and thereby improves work efficiency.

[0012] Optionally, check valves are arranged on the gas backwashing pipe, the water backwashing pipe and the water inlet pipe respectively.

[0013] By adopting the above technical scheme, the arrangement of the check valves can avoid water flow backflow during backwashing, thereby reducing the impact and damage to the ultrafiltration membrane and prolonging the service life of the ultrafiltration membrane. At the same time, the check valves can also prevent unfiltered raw water from flowing back into the filtered area during system operation, thereby maintaining the purity of the outlet water and improving the filtration efficiency and reliability of the entire system.

[0014] Optionally, flow monitors are arranged on the water inlet pipe, the water outlet pipe and the backflow pipe respectively.

[0015] By adopting the above technical solution, the flow monitor can monitor the flow changes in each pipeline in real time. This arrangement not only ensures the stable operation of the system, but also discovers and eliminates potential faults in time, improving the reliability and maintenance efficiency of the system.

[0016] Optionally, a first pressure detector is arranged on the water inlet pipe and the water outlet pipe, respectively.

[0017] By adopting the above technical solution, the first pressure detector can monitor the pressure changes of the water inlet pipe and the water outlet pipe in real time, so that measures can be taken in time at the early stage of the problem, avoiding equipment damage or processing efficiency reduction caused by long-time operation. At the same time, this arrangement can also improve the automation degree of the system, reduce the frequency of manual inspection, and further improve the reliability and maintenance convenience of the equipment.

[0018] Optionally, a second pressure detector is arranged on the air backwash pipe, and the pressure detector is used to detect the air inlet pressure in the air backwash pipe.

[0019] By adopting the above technical solution, the second pressure detector can timely feedback the pressure changes in the air backwash pipe, so as to confirm that the air inlet pressure is less than the preset value, avoiding equipment damage or incomplete backwashing caused by excessively high or low pressure. At the same time, through accurate control of the air backwashing pressure, the backwashing efficiency can be improved, the service life of the ultrafiltration membrane can be prolonged, and the operation stability and reliability of the entire system can be further improved.

[0020] Optionally, the ultrafiltration assembly comprises two ultrafiltration membranes, and a first pipeline and a second pipeline are respectively communicated between the two ultrafiltration membranes. The first pipeline is communicated with the backflow pipe, and the second pipeline is communicated with the blowdown pipe. The regulating assembly is connected with the water backwash pipe, the water outlet pipe, the first pipeline and the second pipeline, respectively, and is used to control the backwashing assembly to backwash the two ultrafiltration membranes or one of the two ultrafiltration membranes.

[0021] By adopting the above technical solution, the regulating assembly can flexibly switch the backwashing path under different working conditions through the connection with the water backwash pipe, the water outlet pipe, the first pipeline and the second pipeline. Therefore, when it is necessary to backwash the two ultrafiltration membranes at the same time, the regulating assembly can ensure that the gas and water in the water backwash pipe and the air backwash pipe are uniformly distributed to the two ultrafiltration membranes, so as to synchronously impact the two ultrafiltration cartridges. When it is necessary to backwash one of the two ultrafiltration membranes, the regulating assembly can make the backwashing medium flow to the specified ultrafiltration membrane only, and at this time, the other ultrafiltration membrane can continue to filter the sewage, so as to improve the overall operation efficiency of the equipment, effectively prolong the service life of the ultrafiltration membrane, and reduce the maintenance cost.

[0022] Optionally, the regulating component includes a regulating pipe and a regulating valve. The regulating pipe is connected to the outlet pipe and the backwash pipe, respectively. Control valves are respectively installed on the regulating pipe and the outlet pipe. There are two sets of regulating valves. One set of regulating valves is installed between the first pipe and the return pipe, and the other set of regulating valves is installed between the second pipe and the drain pipe. The regulating valves are used to connect the return pipe to any of the ultrafiltration membranes through the first pipe and to connect the drain pipe to any of the ultrafiltration membranes through the second pipe.

[0023] By adopting the above technical solution, the combined use of the regulating pipe and regulating valve allows the return pipe to be connected to any ultrafiltration membrane through the first pipe, while the drain pipe is connected to another ultrafiltration membrane through the second pipe. This design not only improves the flexibility of the equipment but also ensures that normal filtration operation is not affected during backwashing, thereby improving the stability and reliability of the system. Furthermore, precise control of the control valve effectively prevents reverse flow of water during backwashing, further enhancing the system's operating efficiency and safety.

[0024] Optionally, the regulating valve is a three-way valve.

[0025] By adopting the above technical solution, the three-way valve design allows for flexible switching between different paths during backwashing, ensuring that each ultrafiltration membrane receives thorough backwashing, thus improving backwashing efficiency and cleaning effect. Simultaneously, the use of the three-way valve simplifies the system structure, reduces the number of valves, and lowers system complexity and maintenance costs. This design not only improves the system's reliability and stability but also enhances the ease of operation and automation level of the entire integrated ultrafiltration unit.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Through the cooperation of ultrafiltration components, return pipe, outlet pipe, inlet pipe group, sewage pipe, air backwash pipe, water backwash pipe and backwash pump, the ultrafiltration components are not easily clogged, and air backwash and water backwash can be performed on the ultrafiltration components to remove pollutants inside the ultrafiltration components. This helps to prevent membrane fouling caused by ultrafiltration component clogging, reduces the possibility of reduced sewage treatment effect, and improves the filtration efficiency and stability of ultrafiltration device.

[0028] 2. By setting up solenoid valves, manual valves, air backwash pipes, water backwash pipes and backwash pumps in coordination, the entire process from filtration, air backwashing, water backwashing to sewage discharge is automated, reducing manual intervention and improving ease of operation and work efficiency.

[0029] 3. By adjusting the pipe, the valve and the control valve, different paths can be switched flexibly during backwashing, ensuring that each ultrafiltration membrane can be fully backwashed, improving the backwashing efficiency and cleaning effect, thereby improving the overall operation efficiency of the equipment, effectively prolonging the service life of the ultrafiltration membrane and reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of an integrated ultrafiltration device for high-turbidity wastewater treatment in the embodiment of the present application.

[0031] Figure 2 is a schematic diagram of the overall structure of an integrated ultrafiltration device for high-turbidity wastewater treatment in the embodiment 3 of the present application.

[0032] Reference signs:

[0033] 1, ultrafiltration assembly; 11, backflow pipe; 12, water outlet pipe; 13, blowdown pipe; 14, ultrafiltration membrane; 15, first pipe; 16, second pipe; 17, cleaning backflow pipe; 2, backwashing assembly; 21, gas backwashing pipe; 22, water backwashing pipe; 23, backwashing pump; 24, check valve; 25, second pressure detector; 3, water inlet pipe group; 31, source water pump; 32, water inlet pipe; 4, electromagnetic valve; 5, manual valve; 6, flow monitor; 7, first pressure detector; 8, adjusting assembly; 81, adjusting pipe; 82, adjusting valve; 83, control valve. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying Figures 1-2 The present application will be further described in detail.

[0035] The embodiment of the present application discloses an integrated ultrafiltration device for high-turbidity wastewater treatment.

[0036] It should be noted that in the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0037] Example 1

[0038] Reference Figure 1The utility model provides an integrated ultrafiltration device for high turbidity wastewater treatment, which comprises an ultrafiltration assembly 1 and a backwashing assembly 2. One end of the ultrafiltration assembly 1 is respectively connected with a backflow pipe 11 and a water outlet pipe 12, and the other end is respectively connected with a water inlet pipe group 3 and a blowdown pipe 13. The backflow pipe 11 can return liquid to the water inlet pipe group 3. The backwashing assembly 2 is connected with the water outlet pipe 12, and the backwashing assembly 2 can backwash the ultrafiltration assembly 1 through the water outlet pipe 12, thereby realizing efficient filtration and backwashing functions and improving the operation efficiency and stability of the device.

[0039] The water inlet pipe group 3 comprises a source water pump 31 and a water inlet pipe 32. The water inlet pipe 32 is connected with the source water pump 31 and the ultrafiltration assembly 1. The source water pump 31 can be a centrifugal pump or a screw pump, and the appropriate model can be selected according to actual needs. Electromagnetic valves 4 are arranged on the water inlet pipe 32, the blowdown pipe 13, the backflow pipe 11 and the water outlet pipe 12, respectively. The electromagnetic valves 4 are used to control the opening and closing of the pipelines and realize automatic control.

[0040] Manual valves 5 are arranged on the water inlet pipe 32, the backflow pipe 11 and the water outlet pipe 12, respectively. The manual valves 5 are used to adjust the flow rate, which is convenient for equipment debugging and maintenance. In the embodiment, the manual valves 5 are diaphragm valves.

[0041] It should be noted that the specific connection between the backflow pipe 11 and the water inlet pipe 32 enables the backflow pipe 11 to return water to the water inlet pipe 32, which is a conventional technical means for those skilled in the art and thus will not be described in detail in the embodiment.

[0042] The electromagnetic valves 4 on the water inlet pipe 32, the water outlet pipe 12, the backflow pipe 11 and the blowdown pipe 13 are defined as first, second, third and fourth electromagnetic valves, respectively. The manual valves 5 on the water inlet pipe 32, the water outlet pipe 12 and the backflow pipe 11 are defined as first, second and third manual valves, respectively.

[0043] Before filtering sewage, the ultrafiltration assembly 1 needs to be flushed. Specifically, the first electromagnetic valve, the first manual valve, the third electromagnetic valve and the third manual valve are opened, and then the source water pump 31 is started. The source water pump 31 sends source water to the ultrafiltration assembly 1 through the water inlet pipe 32. After the source water flushes the ultrafiltration assembly 1, the source water returns to the source water inlet through the backflow pipe 11 and finally returns to the water inlet pipe 32, so as to complete the flushing of the ultrafiltration assembly 1. It should be noted that the source water refers to the sewage to be treated.

[0044] When the source water needs to be treated, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are opened, the first manual valve, the second manual valve and the third manual valve are opened, and then the source water pump 31 is opened. The source water pump 31 sends the source water into the ultrafiltration assembly 1 through the water inlet pipe 32, and the water produced after being filtered by the ultrafiltration assembly 1 can be discharged through the water outlet pipe 12, and the other part of the concentrated water can flow back into the water inlet pipe 32 through the backflow pipe 11, so as to realize the cross-flow anti-pollution of the surface of the ultrafiltration assembly 1. At this time, it is the state when the entire integrated ultrafiltration device works most of the time.

[0045] Before the ultrafiltration device is operated, the manual valve 5 is used to adjust the backflow ratio and the water outlet quantity, so that the flow rates in the water inlet pipe 32, the water outlet pipe 12 and the backflow pipe 11 are kept within a specified interval, so that the cross-flow degree between the backflow pipe 11 and the water outlet pipe 12 is kept appropriate, so as to reduce the possibility of the ultrafiltration assembly 1 being blocked.

[0046] It should be noted that the application uses the backflow pipe 11 and the water outlet pipe 12 to make the water cross-flow, which effectively reduces the possibility of the ultrafiltration assembly 1 being blocked. At the same time, the backflow pipe 11 returns part of the water to the water inlet pipe 32, so as to realize the cross-flow anti-pollution of the surface of the ultrafiltration assembly 1, thereby reducing the blocking rate of the ultrafiltration assembly 1, and further reducing the possibility of the ultrafiltration assembly 1 being blocked.

[0047] Referring to Figure 1 , the water inlet pipe 32, the water outlet pipe 12 and the backflow pipe 11 are respectively provided with flow monitors 6. In the embodiment, the flow monitors 6 are flow sensors, so as to monitor the flow rates of the respective pipes in real time, and ensure the normal operation of the equipment.

[0048] The water inlet pipe 32 and the water outlet pipe 12 are respectively provided with first pressure detectors 7. In the embodiment, the first pressure detectors 7 are pressure sensors, which can detect the pressure in the pipe, and discover abnormal conditions in time, so as to avoid equipment damage or processing efficiency reduction.

[0049] Referring to Figure 1 , the ultrafiltration assembly 1 includes a plurality of ultrafiltration membranes 14. In the embodiment, two ultrafiltration membranes 14 are provided, and the two ultrafiltration membranes 14 are respectively communicated with a first pipe 15 and a second pipe 16. The first pipe 15 is communicated with the backflow pipe 11, and the second pipe 16 is communicated with the blowdown pipe 13.

[0050] The ultrafiltration membrane 14 can be made of polypropylene (PP) or polyvinylidene fluoride (PVDF) and the like, and has good chemical stability and mechanical strength. The pore size of the ultrafiltration membrane 14 is between 1-100 nanometers, which can effectively remove impurities such as suspended solids, colloids, bacteria and viruses in water.

[0051] Referring to Figure 1, the backwash assembly 2 comprises a gas backwash pipe 21 and a water backwash pipe 22. The water backwash pipe 22 is communicated with the water outlet pipe 12, and an end of the water backwash pipe 22 away from the water outlet pipe 12 is communicated with a backwash pump 23. The backwash pump 23 can send water to the ultrafiltration membrane 14 through the water backwash pipe 22 and the water outlet pipe 12, so as to backwash the ultrafiltration membrane 14 with water.

[0052] An end of the gas backwash pipe 21 is communicated with the water backwash pipe 22, and the other end of the gas backwash pipe 21 is used to be communicated with an external air pump, so that the gas backwash pipe 21 can send gas to the ultrafiltration membrane 14 through the water backwash pipe 22 and the water outlet pipe 12, so as to backwash the ultrafiltration membrane 14 with gas. In other embodiments, the gas backwash pipe 21 can also be directly communicated with the water outlet pipe 12.

[0053] The gas backwash pipe 21 and the water backwash pipe 22 are also respectively provided with electromagnetic valves 4. It is defined that the electromagnetic valves 4 on the water backwash pipe 22 and the gas backwash pipe 21 are respectively the fifth electromagnetic valve and the sixth electromagnetic valve.

[0054] Referring to Figure 1 When it is needed to backwash the ultrafiltration membrane 14 with gas, the sixth electromagnetic valve and the fourth electromagnetic valve are first opened, and then the gas backwash pipe 21 is used to send gas into the water backwash pipe 22. The gas flows into the ultrafiltration membrane 14 through the water backwash pipe 22 and the water outlet pipe 12 and is discharged through the blowdown pipe 13. After a period of time, the second electromagnetic valve is opened, so that the gas can be discharged from the water outlet pipe 12 to flush the water outlet pipe 12.

[0055] When it is needed to backwash the ultrafiltration membrane 14 with water, the fifth electromagnetic valve and the fourth electromagnetic valve are opened, and then the backwash pump 23 is opened. The backwash pump 23 sends cleaning water into the ultrafiltration assembly 1 through the water backwash pipe 22 and the water outlet pipe 12. The cleaning water drives the pollutants in the ultrafiltration membrane 14 to be discharged from the blowdown pipe 13, so as to backwash the ultrafiltration membrane 14 with water.

[0056] Referring to Figure 1 The gas backwash pipe 21, the water backwash pipe 22 and the water inlet pipe 32 are respectively provided with check valves 24 to prevent liquid backflow and ensure safe and stable operation of the system.

[0057] The gas backwash pipe 21 is provided with a second pressure detector 25. In this embodiment, the second pressure detector 25 is a pressure switch, so as to detect the gas inlet pressure in the gas backwash pipe 21 by using the second pressure detector 25 and ensure effectiveness of the gas backwashing process.

[0058] Before the sixth electromagnetic valve is opened, the second pressure detector 25 detects the gas inlet pressure in the gas backwash pipe 21, and after confirming that the gas inlet pressure is less than a preset value, the sixth electromagnetic valve is opened, so as to ensure that the gas inlet pressure is within a safe range. This can avoid damage to the ultrafiltration membrane 14 due to excessively high pressure, thereby prolonging the service life of the ultrafiltration membrane 14.

[0059] The implementation principle of the integrated ultrafiltration device for high-turbidity wastewater treatment in the embodiment of the application is as follows: when it is necessary to treat source water, the ultrafiltration membrane 14 is first flushed, specifically: the first electromagnetic valve, the first manual valve, the third electromagnetic valve, and the third manual valve are opened, and then the source water pump 31 is started, the source water pump 31 sends source water to the ultrafiltration membrane 14 through the water inlet pipe 32, and after the source water flushes the ultrafiltration membrane 14, the source water flows back to the source water inlet through the backflow pipe 11 and finally flows back to the water inlet pipe 32, so as to complete the flushing of the ultrafiltration membrane 14. The flushing process lasts for 30 seconds.

[0060] After 30 seconds, the second electromagnetic valve and the second manual valve are opened, at this time, the source water pump 31 sends source water to the ultrafiltration membrane 14 through the water inlet pipe 32, and after the source water is treated by the ultrafiltration membrane 14, part of the produced water will be discharged through the water outlet pipe 12, and the other part of the concentrated water will flow back to the water inlet pipe 32 through the backflow pipe 11. At this time, it is the state of the integrated ultrafiltration device working most of the time. In this embodiment, the working state lasts for 30 minutes.

[0061] After 30 minutes, the ultrafiltration membrane 14 is gas backwashed, the first electromagnetic valve, the second electromagnetic valve, and the third electromagnetic valve are closed, the sixth electromagnetic valve and the fourth electromagnetic valve are opened, and then air is introduced into the water backwashing pipe 22 through the gas backwashing pipe 21, the gas flows into the ultrafiltration membrane 14 through the water backwashing pipe 22 and the water outlet pipe 12 and is discharged through the blowdown pipe 13. After waiting for 15 seconds, the second electromagnetic valve is opened, so that part of the gas can be discharged from the water outlet pipe 12, and the gas backwashing is completed.

[0062] Then, the sixth electromagnetic valve and the second electromagnetic valve are closed, the fifth electromagnetic valve is opened, and the backwashing pump 23 is started, the backwashing pump 23 introduces cleaning water into the ultrafiltration membrane 14 through the water backwashing pipe 22 and the water outlet pipe 12, the cleaning water drives the pollutants in the ultrafiltration membrane 14 to be discharged from the blowdown pipe 13, so as to realize water backwashing of the ultrafiltration membrane 14, and further realize the whole process automation from filtration, gas backwashing, water backwashing to blowdown.

[0063] Through the automatic control of the above steps, efficient operation of the integrated ultrafiltration device for high-turbidity wastewater treatment is realized. The settings of each step take into account the stability and reliability of the equipment, reduce manual intervention, and improve the degree of automation of the equipment. The whole system structure is compact, easy to install, suitable for wastewater treatment of small and medium-sized enterprises and clarification and filtration of high-turbidity raw material liquid, and has high practical value. And in the whole process, no chemical reagent needs to be added, and a large amount of energy is not needed, achieving the technical effect of energy saving and environmental protection.

[0064] The integrated ultrafiltration device in this embodiment can be applied to the filtration of various water sources, including river water, lake water, well water, seawater, etc., and can also be widely applied to industrial wastewater treatment and municipal water supply fields, and has strong adaptability and flexibility.

[0065] Embodiment 2

[0066] With reference to Figure 1 The difference between the present embodiment and Embodiment 1 is that the semi-automatic process can be realized by using the integrated ultrafiltration device, and a chemical cleaning step is added in the integrated ultrafiltration device.

[0067] The water outlet pipe 12 is communicated with a cleaning backflow pipe 17, and the end of the cleaning backflow pipe 17 away from the water outlet pipe 12 is communicated with the chemical cleaning tank. The backflow pipe 11 is also communicated with the cleaning backflow pipe 17 through a pipe, so that the cleaning liquid can flow into the cleaning backflow pipe 17 through the backflow pipe 11 and the water outlet pipe 12, and then backflow into the chemical cleaning tank through the cleaning backflow pipe 17. The water inlet pipe 32 is also communicated with the chemical cleaning tank, so that the cleaning liquid in the chemical cleaning tank can backflow into the water inlet pipe 32 again to realize the process of circulating cleaning. Manual valves 5 are also respectively arranged on the cleaning backflow pipe 17 and the pipe between the backflow pipe 11 and the cleaning backflow pipe 17 to control the flow path of the cleaning liquid.

[0068] It should be noted that the specific arrangement of the chemical cleaning tank is a routine technical means for those skilled in the art, and therefore will not be described in detail in the present application.

[0069] After the device is operated for a long time, the chemical cleaning liquid is prepared in the chemical cleaning tank, all the manual valves 5 are opened, the first electromagnetic valve is opened, and the source water pump 31 is started. The source water pump 31 delivers the prepared chemical cleaning liquid from the water inlet pipe 32 to the ultrafiltration membrane 14, and makes the chemical cleaning liquid flow into the cleaning backflow pipe 17 from the backflow pipe 11 and the water outlet pipe 12, and then backflow into the chemical cleaning tank through the cleaning backflow pipe 17 to realize the process of circulating cleaning.

[0070] The implementation principle of the present embodiment is that the chemical cleaning function is added to further improve the processing capacity and reliability of the device. The chemical cleaning liquid can effectively remove stubborn stains on the surface of the ultrafiltration membrane 14, restore the filtration performance of the ultrafiltration membrane 14, and prolong the service life of the ultrafiltration membrane 14.

[0071] Embodiment 3

[0072] With reference to Figure 2 The difference between the present embodiment and Embodiment 1 is that the adjusting assembly 8 is additionally arranged.

[0073] The adjusting assembly 8 comprises an adjusting pipe 81 and an adjusting valve 82. The adjusting pipe 81 is communicated with the water outlet pipe 12 and the water backwashing pipe 22, and control valves 83 are arranged on the adjusting pipe 81 and the water outlet pipe 12.

[0074] The adjusting valve 82 is provided with two groups, one group of adjusting valve 82 is arranged between the first pipe 15 and the backflow pipe 11, and the other group of adjusting valve 82 is arranged between the second pipe 16 and the blowdown pipe 13. In the embodiment, the adjusting valve 82 is a three-way valve, so as to flexibly switch the path of the pipeline by the adjusting valve 82.

[0075] In other embodiments, the adjusting valve 82 is also provided directly as four, and the four adjusting valves 82 are arranged in two groups, two adjusting valves 82 in one group are arranged on the first pipe 15 and located on both sides of the backflow pipe 11, and two adjusting valves 82 in the other group are arranged on the second pipe 16 and located on both sides of the blowdown pipe 13.

[0076] When the reverse washing of one ultrafiltration membrane 14 is needed, the control valve 83 on the adjusting pipe 81 is opened, the control valve 83 on the outlet pipe 12 is closed, the fourth electromagnetic valve and the adjusting valve 82 are opened, and the fifth electromagnetic valve or the sixth electromagnetic valve is opened, so that the gas or the cleaning water can enter the blowdown pipe 13 through the water reverse washing pipe 22, the adjusting pipe 81 and the ultrafiltration membrane 14 in sequence, to realize the reverse washing of one ultrafiltration membrane 14. When the reverse washing of another ultrafiltration membrane 14 is needed, the control valve 83 on the adjusting pipe 81 is closed, the control valve 83 on the outlet pipe 12 is opened, and the state of the adjusting valve 82 is switched, so that the gas or the cleaning water can enter the blowdown pipe 13 through the water reverse washing pipe 22, the outlet pipe 12 and another ultrafiltration membrane 14 in sequence, to realize the reverse washing of another ultrafiltration membrane 14.

[0077] In the embodiment, when the reverse washing of a single ultrafiltration membrane 14 is performed, the ultrafiltration membrane 14 which is not washed can maintain the running state to process the source water, so as to effectively improve the reverse washing efficiency and the cleaning effect, and improve the overall operation efficiency of the equipment.

[0078] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An integrated ultrafiltration device for high turbidity wastewater treatment, characterized by, The utility model relates to a kind of water purification systems, including: Ultrafiltration assembly (1), one end of the ultrafiltration assembly (1) is communicated with backflow pipe (11) and outlet pipe (12) respectively, the other end of the ultrafiltration assembly (1) is communicated with water inlet pipe group (3) and blowdown pipe (13) respectively, the backflow pipe (11) can flow back liquid to the water inlet pipe group (3); Backwashing assembly (2), including gas backwashing pipe (21) and water backwashing pipe (22), the water backwashing pipe (22) is communicated with the outlet pipe (12), the one end of the water backwashing pipe (22) away from the outlet pipe (12) is communicated with backwashing pump (23), the backwashing pump (23) can be watered to the ultrafiltration assembly (1) by the water backwashing pipe (22) and the outlet pipe (12), the gas backwashing pipe (21) is communicated with the water backwashing pipe (22), the gas backwashing pipe (21) can be gasified to the ultrafiltration assembly (1) by the water backwashing pipe (22) and the outlet pipe (12).

2. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 1, characterized in that: The water inlet pipe group (3) includes source water pump (31) and water inlet pipe (32), the water inlet pipe (32) is communicated with the source water pump (31) and the ultrafiltration assembly (1) respectively, the water inlet pipe (32), the blowdown pipe (13), the backflow pipe (11), the outlet pipe (12), the gas backwashing pipe (21) and the water backwashing pipe (22) are respectively provided with solenoid valve (4), the water inlet pipe (32), the backflow pipe (11) and the outlet pipe (12) are respectively provided with hand valve (5), and the hand valve (5) is used to adjust flow.

3. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 2, characterized in that: The water inlet pipe (32), the outlet pipe (12), the backflow pipe (11) are respectively provided with flow monitor (6).

4. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 2, characterized in that: The water inlet pipe (32), the outlet pipe (12) are respectively provided with first pressure detector (7).

5. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 2, characterized in that: The gas backwashing pipe (21) is provided with second pressure detector (25), and the pressure detector is used to detect the inlet pressure in the gas backwashing pipe (21).

6. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 1, characterized in that: Including adjusting assembly (8), the ultrafiltration assembly (1) includes two ultrafiltration membranes (14), the first pipe (15) and the second pipe (16) are communicated between two the ultrafiltration membranes (14) respectively, the first pipe (15) is communicated with the backflow pipe (11), the second pipe (16) is communicated with the blowdown pipe (13), the adjusting assembly (8) is connected with the water backwashing pipe (22), the outlet pipe (12), the first pipe (15) and the second pipe (16) respectively, and the adjusting assembly (8) is used to control the backwashing assembly (2) to backwash two the ultrafiltration membranes (14) or one of two the ultrafiltration membranes (14).

7. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 1, characterized in that: ​ 8. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 7, characterized in that: The adjusting assembly (8) comprises adjusting pipes (81) and adjusting valves (82), the adjusting pipes (81) are communicated with the water outlet pipe (12) and the water backwashing pipe (22) respectively, control valves (83) are arranged on the adjusting pipes (81) and the water outlet pipe (12) respectively, the adjusting valves (82) are arranged in two groups, one group of the adjusting valves (82) is arranged between the first pipe (15) and the backflow pipe (11), and the other group of the adjusting valves (82) is arranged between the second pipe (16) and the blowdown pipe (13), the adjusting valves (82) are used for enabling the backflow pipe (11) to be communicated with any ultrafiltration membrane (14) through the first pipe (15), and enabling the blowdown pipe (13) to be communicated with any ultrafiltration membrane (14) through the second pipe (16).

9. The integrated ultrafiltration device for high turbidity wastewater treatment according to claim 8, characterized in that: The adjusting valve (82) is a three-way valve.

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