Water purification treatment system

Abstract

The utility model discloses a water purification treatment system. The water purification treatment system comprises a dosing unit, an integrated water purifier and a disinfection unit, wherein the integrated water purifier comprises an electrochemical pretreatment unit, a flocculent precipitation unit and a filtering unit which are communicated in sequence, and the electrochemical pretreatment unit is connected with a dosing unit; the disinfection unit is connected with the filtering unit; compared with the prior art, the integrated water purifier disclosed by the utility model has the advantages that firstly, sterilization treatment is carried out through the dosing unit in a dosing manner, and then the sewage is guided into the electrochemical pretreatment unit in the integrated water purifier to be electrolyzed to kill algae and most microorganisms in the sewage; then the wastewater enters the flocculation precipitation unit for flocculation precipitation, then enters the filtering unit for filtering treatment, and finally is disinfected and sterilized again through the disinfection unit, so that the effluent quality is improved, and the effluent quantity is more stable; meanwhile, due to the arrangement of the electrochemical pretreatment unit, algae and most microorganisms in the sewage are prevented from entering the flocculent precipitation unit, and the flocculation effect of the flocculent precipitation unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment systems, and particularly relates to a water purification treatment system. Background Art

[0002] The existing water purification systems mainly carry out mixing reaction, flocculation precipitation and filtration treatment, and can purify sewage well; however, the current sewage mainly comes from rivers, lakes and waters. At present, with the large-scale development of industrial and agricultural production, a large amount of sewage containing nitrogen and phosphorus nutrients is discharged into nearby lakes, reservoirs and rivers, resulting in serious eutrophication of rivers, lakes and waters. A large number of algae such as blue-green algae and green algae and other microorganisms multiply in the water body. When the traditional water purification system treats sewage containing a large amount of algae and other microorganisms, the flocculation effect will become worse. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a water purification treatment system to solve the problem that in the prior art, when the traditional water purification system treats sewage containing a large amount of algae and other microorganisms, the flocculation effect will become worse.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: A water purification treatment system, comprising:

[0005] A chemical dosing unit;

[0006] An integrated water purifier, the integrated water purifier includes an electrochemical pretreatment unit, a flocculation precipitation unit and a filtration unit that are connected in sequence. The electrochemical pretreatment unit is connected to the chemical dosing unit;

[0007] A disinfection unit, the disinfection unit is connected to the filtration unit.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The water purification treatment system first sterilizes the sewage from rivers, lakes and waters by adding chemicals through the chemical dosing unit, and then introduces it into the electrochemical pretreatment unit in the integrated water purifier for electrolysis to kill the algae and most of the microorganisms in the sewage; then it enters the flocculation precipitation unit for flocculation precipitation, then enters the filtration unit for filtration treatment, and finally passes through the disinfection unit for disinfection again to improve the effluent quality and the water output is also more stable; at the same time, due to the setting of the electrochemical pretreatment unit, the algae and most of the microorganisms in the sewage are prevented from entering the flocculation precipitation unit, improving the flocculation effect of the flocculation precipitation unit. Description of the Drawings

[0010] Figure 1 It is the process flow diagram of a water purification treatment system according to an embodiment of the utility model;

[0011] Figure 2 is Figure 1 a schematic diagram of the structural layout inside the integrated water purifier;

[0012] Figure 3 is Figure 2 a schematic diagram of the structural layout inside the electrochemical pretreatment unit.

[0013] The reference numerals in the accompanying drawings of the specification include: housing 1, electrochemical pretreatment unit 2, outer shell 21, water distribution pipe 22, support 23, electrode plate group 24, pretreatment water outlet 25, flocculation sedimentation unit 3, sediment layer 31, first inclined tube packing layer 32, second inclined tube packing layer 33, supernatant layer 34, filtration unit 4, clear water layer 41, filtration layer 42, sewage discharge layer 43, drainage chamber 44, filter cap 45, clear water conduit 46, air-water backwashing unit 5, air distribution pipe 51, intake valve 52, backwashing sewage discharge pipe 53, backwashing sewage discharge valve 54, sludge discharge unit 6, sludge discharge pipeline 61, sludge discharge valve 62, overflow weir 7, conduction assembly 8, water collection hopper 81, buffer pipeline 82, emptying port 9, and maintenance port 10. Specific embodiments

[0014] The present utility model will be further described in detail below through specific embodiments:

[0015] As Figure 1 shown, an embodiment of the present utility model provides a water purification treatment system, including a chemical dosing unit, an integrated water purifier, and a disinfection unit; wherein, the integrated water purifier includes an electrochemical pretreatment unit, a flocculation sedimentation unit, and a filtration unit connected in sequence, and the electrochemical pretreatment unit is connected to the chemical dosing unit; the disinfection unit is connected to the filtration unit.

[0016] This water purification treatment system first performs sterilization treatment on the sewage from rivers, lakes, and reservoirs in a chemical dosing manner through the chemical dosing unit, and then introduces it into the electrochemical pretreatment unit in the integrated water purifier for electrolysis to kill algae and most microorganisms in the sewage; then it enters the flocculation sedimentation unit for flocculation sedimentation, then enters the filtration unit for filtration treatment, and finally passes through the disinfection unit for disinfection again, improving the water quality of the effluent and making the water output more stable; at the same time, due to the setting of the electrochemical pretreatment unit, algae and most microorganisms in the sewage are prevented from entering the flocculation sedimentation unit, improving the flocculation effect of the flocculation sedimentation unit.

[0017] As Figure 1 shown, according to another embodiment of the present utility model, the water purification treatment system, wherein the chemical dosing unit includes a static pipeline mixer and a first chemical dosing device, the static pipeline mixer is connected to the electrochemical pretreatment unit, and the first chemical dosing device is connected to the static pipeline mixer.

[0018] River, lake, and reservoir water is pumped to the intake pump house. The sewage in the intake pump house is introduced into the electrochemical pretreatment unit for treatment through a static pipeline mixer. The first chemical dosing device can be a chemical dosing tank connected to the front end of the static pipeline mixer. The prepared PAC or PAM chemicals are sent into the static pipeline mixer through the first chemical dosing device. Through the shearing and stirring actions of its own structure, the static pipeline mixer makes the PAC or PAM chemicals mix evenly in the sewage, and sterilizes the sewage.

[0019] As Figure 1 shown, according to another embodiment of the present invention, in the water purification treatment system, the disinfection unit includes a clear water tank and a second chemical dosing device. The clear water tank is connected to the filtration unit, and the second chemical dosing device is connected to the clear water tank.

[0020] The clear water treated by the integrated water purifier is introduced into the clear water tank for collection. The second chemical dosing device can be a chemical dosing tank connected to the clear water tank. After adding sodium hypochlorite into the clear water tank for disinfection treatment, the water quality can meet the effluent requirements and can be connected to the water use point for use.

[0021] As Figure 2 shown, according to another embodiment of the present invention, in the water purification treatment system, the electrochemical pretreatment unit, the flocculation sedimentation unit, and the filtration unit are integrated and designed in a housing, which has the characteristic of small floor area.

[0022] In this embodiment, in the housing 1, the housing 1 is divided into a flocculation sedimentation unit 3 and a filtration unit 4 distributed left and right by a first partition arranged in the vertical direction. The water outlet side of the flocculation sedimentation unit 3 is located at the top side of the first partition, and the electrochemical pretreatment unit 2 is located at the front side of the left bottom of the housing 1.

[0023] To better understand this solution, the structures of the electrochemical pretreatment unit 2, the flocculation sedimentation unit 3, and the filtration unit 4 will be further optimized below.

[0024] As Figure 2 and Figure 3 shown, according to another embodiment of the present invention, in the water purification treatment system, the electrochemical pretreatment unit 2 includes a housing 21, a water distribution pipe 22, a support 23, a plate electrode group 24, and a pretreatment water outlet 25. Among them, the water distribution pipe 22 is arranged on the bottom wall of the housing 21 and is connected to the chemical dosing unit. The support 23 is arranged in the housing 21 and is located above the water distribution pipe 22. The support 23 has liquid conduction holes that conduct the liquid above and below the support 23 in the housing 21. The plate electrode group 24 is arranged on the support 23. The pretreatment water outlet 25 is arranged on the upper part of the side wall of the housing 21 and is connected to the water inlet side of the flocculation sedimentation unit 3.

[0025] Specifically, the water distribution pipe 22 is horizontally arranged at the bottom inside the housing 21 and is connected to the static pipeline mixer. The water distribution pipe 22 evenly distributes water into the housing 21 through a number of water distribution holes arranged at intervals along its axial direction on its bottom side, and prevents impurities such as algae from entering the water distribution pipe 22 through the water distribution holes and affecting the water distribution effect; the support 23 supports the electrode plate group 24, and the liquid guide holes facilitate the water discharged from the water distribution pipe 22 to pass through and then be electrolyzed by the electrode plate group 24 to kill algae and most microorganisms in the sewage. The treated sewage is discharged into the water inlet side of the flocculation and precipitation unit 3 from the pre-treatment water outlet 25 to continue the subsequent operations.

[0026] Among them, the electrode plate group 24 mainly includes a titanium electrode as the cathode and a composite electrode as the anode. The composite electrode is composed of a titanium substrate and a metal oxide layer covering the surface of the titanium substrate. The metal oxide layer is composed of platinum oxide, tin oxide and antimony oxide. The electrode plate group 24 directly degrades organic matter through anodic reactions or generates oxidants such as •OH radicals, Cl2, ClO-, O2, O3, etc. to degrade organic pollutants, sterilize and kill algae, which can greatly improve the flocculation effect of the subsequent sewage, and at the same time can reduce the backwashing frequency of the filtration unit 4 and greatly reduce the self-water consumption rate of the equipment, ensuring the stability of the effluent water quality and quantity.

[0027] As Figure 2 shown, according to another embodiment of the present invention, in the water purification treatment system, the flocculation and precipitation unit 3 is arranged from bottom to top on one side inside the housing 1 as a sedimentation layer 31, a first inclined tube packing layer 32, a second inclined tube packing layer 33 and a supernatant layer 34 that are sequentially connected. The supernatant layer 34 is connected to the filtration unit 4, and the sedimentation layer 31 is connected to the water outlet of the electrochemical pre-treatment unit 2.

[0028] Specifically, a liquid distribution pipe is connected to the pre-treatment water outlet 25 and is arranged on the top side of the sedimentation layer 31. The sewage treated by the electrochemical pre-treatment unit 2 is evenly distributed in the sedimentation layer 31 through the liquid distribution pipe. Then, the sewage undergoes solid-liquid separation through the first inclined tube packing layer 32 and the second inclined tube packing layer 33, and then enters the supernatant layer 34 and is introduced into the filtration unit 4 for subsequent work. The liquid distribution pipe is arranged on the top side of the sedimentation layer 31, which can reduce the disturbance of the sludge accumulated at the bottom side of the sedimentation layer 31.

[0029] Among them, the inclined tube packing in the first inclined tube packing layer 32 is arranged along a first inclined direction, and the inclined tube packing in the second inclined tube packing layer 33 is arranged along a second inclined direction. An angle greater than 90 degrees is formed between the first inclined direction and the second inclined direction.

[0030] In this embodiment: the first inclined direction is inclined obliquely to the left along the vertical direction, the second inclined direction is inclined obliquely to the right along the vertical direction, and the angle formed between the first inclined direction and the second inclined direction can be 120 degrees, 130 degrees, etc.

[0031] The water flow direction of the sewage changes between the first inclined tube packing layer 32 and the second inclined tube packing layer 33, increasing the contact opportunities between small particle flocs and improving the effluent quality. The inclined tube packing in the first inclined tube packing layer 32 mainly plays a role in evenly distributing water and guiding the flow, and makes the water flow tend to have a lateral flow, so that the sludge generated by the inclined tube packing in the second inclined tube packing layer 33 is pushed from the reserved sewage discharge gap in the inclined tube packing in the first inclined tube packing layer 32 to the sedimentation layer 31 for collection.

[0032] Specifically, an overflow weir 7 is provided on the top side of the supernatant layer 34. The sewage entering the supernatant layer 34 overflows into the overflow weir 7 in an overflow manner and then is introduced into the filtering unit 4 for subsequent work.

[0033] As Figure 2 shown, according to another embodiment of the present invention, in the water purification treatment system, the filtering unit 4 is arranged from bottom to top on the side of the housing 1 away from the flocculation sedimentation unit 3 as a clear water layer 41, a filtering layer 42, a sewage discharge layer 43 and a drainage chamber 44. The clear water layer 41 and the filtering layer 42 are communicated through a plurality of filter caps 45 arranged at the bottom of the filtering layer 42. The filtering layer 42 and the sewage discharge layer 43 are directly communicated. The sewage discharge layer 43 and the drainage chamber 44 are independently arranged, and the clear water layer 41 and the drainage chamber 44 are communicated through a clear water conduit 46. The drainage chamber 44 is communicated with the disinfection unit. The sewage discharge layer 43 is communicated with the water outlet side of the flocculation sedimentation unit 3 through a conduction assembly 8. The water inlet of the conduction assembly 8 is higher than the water outlet of the clear water conduit 46.

[0034] In this embodiment:

[0035] A support frame is arranged in the filtering layer 42, and a packing cavity for filling filtering packing is formed in the support frame. The filtering packing can be activated carbon. The bottom of the support frame is sealed, and a through hole communicated with the sewage discharge layer 43 is formed at the top. The sewage discharge layer 43 and the drainage chamber 44 are separated by a second partition plate. A plurality of filter caps 45 are evenly distributed at the bottom of the support frame to communicate the clear water layer 41 and the filtering layer 42.

[0036] The conduction component 8 is specifically connected between the inner enclosed space of the overflow weir 7 and the sewage discharge layer 43. The sewage treated by the flocculation and sedimentation unit 3 is introduced into the sewage discharge layer 43 through the conduction component 8. The sewage is filtered through the filter layer 42 and then filtered again through the filter cap 45 and enters the clear water layer 41 to form clear water. Since the water inlet of the conduction component 8 is higher than the water outlet of the clear water conduit 46, under the action of pressure, the clear water in the clear water layer 41 is introduced into the drainage chamber 44 through the clear water conduit 46. The clear water collected in the drainage chamber 44 can be introduced into the clear water tank in the disinfection unit through a pipeline from the clear water outlet on the top side of the side wall of the drainage chamber 44. Among them, the pressure difference formed by the height between the water inlet of the conduction component 8 and the water outlet of the clear water conduit 46 can meet the requirement of introducing the clear water in the clear water layer 41 into the drainage chamber 44 through the clear water conduit 46. Specifically, the height between the water inlet of the conduction component 8 and the water outlet of the clear water conduit 46 can be designed according to the actual situation and will not be elaborated here.

[0037] Based on the above solution:

[0038] The conduction component 8 includes a water collecting hopper 81 and a buffer pipeline 82. The water collecting hopper 81 is connected to the water outlet side of the flocculation and sedimentation unit 3. One end of the buffer pipeline 82 is connected to the bottom of the water collecting hopper 81, and the other end extends downward to the clear water layer 41 and then bends and extends upward to the bottom side of the sewage discharge layer 43.

[0039] Here, the water collecting hopper 81 is connected to the inner enclosed space of the overflow weir 7, and the buffer pipeline 82 is arranged in a "U" shape; the sewage entering the inner enclosed space of the overflow weir 7 is introduced into the water collecting hopper 81, and then introduced into the bottom of the sewage discharge layer 43 through the buffer pipeline 82 and filtered through the filter layer 42. Since there is a certain height difference between the water collecting hopper 81 and the bottom side of the sewage discharge layer 43, the water entering the buffer pipeline 82 from the water collecting hopper 81 first accelerates downward and then buffers at the bottom of the buffer pipeline 82, and then slowly drains into the sewage discharge layer 43 from the water outlet of the buffer pipeline 82, reducing the disturbance to the impurities in the sewage discharge layer 43.

[0040] As Figure 2 shown, according to another embodiment of the present invention, the water purification treatment system further includes a water-air backwashing component 5. The water-air backwashing component 5 cooperates with the filter layer 42 to backwash and remove impurities from the filter layer 42.

[0041] Specifically, the water-air backwashing component 5 includes a gas distribution pipe 51 and a backwashing sewage discharge pipe 53. The gas distribution pipe 51 is arranged at the inner bottom side of the filter layer 42, and an air inlet valve 52 is arranged at the outer end of the gas distribution pipe 51 located outside the filter layer 42. A plurality of gas distribution holes are evenly arranged on the gas distribution pipe 51; one end of the backwashing sewage discharge pipe 53 is connected to the top of the sewage discharge layer 43, and the other end passes through the housing 1 and extends downward along the vertical direction. A backwashing sewage discharge valve 54 is arranged on the backwashing sewage discharge pipe 53.

[0042] When the filter layer 42 needs to be cleaned: Open the intake valve 52 and the backwash drain valve 54, and use equipment such as an air compressor to introduce air into the air inlet of the air distribution pipe 51. The air is sprayed into the filter layer 42 from the air holes, and the air flow will carry the water flow to flush the pollutants in the filter layer 42 into the sewage discharge layer 43. Due to the arrangement of the buffer pipe 82, the reverse flow of the sewage is changed, so that after the sewage enters the sewage discharge layer 43, it will flow to the top of the sewage discharge layer 43 and be discharged through the backwash drain pipe 53; after the cleaning is completed, close the intake valve 52 and the backwash drain valve 54.

[0043] As Figure 2 shown, according to another embodiment of the present invention, the water purification treatment system further includes a sludge discharge assembly 6, and the sludge discharge assembly 6 cooperates with the flocculation sedimentation unit 3 to discharge the sludge precipitated in the flocculation sedimentation unit 3.

[0044] Specifically, the sludge discharge assembly 6 includes a sludge discharge pipe 61. One end of the sludge discharge pipe 61 is arranged at the bottom side of the flocculation sedimentation unit 3, and the other end thereof passes through the housing 1 and extends vertically downward. A sludge discharge valve 62 is arranged on the sludge discharge pipe 61.

[0045] One end of the sludge discharge pipe 61 is specifically arranged at the bottom side of the sedimentation layer 31. When the sludge in the sedimentation layer 31 accumulates to a certain amount, open the sludge discharge valve 62 to discharge the sludge in the sedimentation layer 31 through the sludge discharge pipe 61. A sludge pump can be used to pump out the sludge as power, or the sludge discharge valve 62 can be an existing electric sludge discharge valve 62. After the electric sludge discharge valve 62 is opened, it has a suction force to discharge the sludge in the sedimentation layer 31 through the sludge discharge pipe 61.

[0046] Emptying ports 9 can be arranged at the bottom sides of the outer shell 21, the clear water layer 41, and the sedimentation layer 31, so that the materials in the outer shell 21, the clear water layer 41, and the sedimentation layer 31 can be emptied.

[0047] Maintenance ports 10 can be arranged on the side wall of the sewage discharge layer 43 and the top of the drainage chamber 44.

[0048] When the water purification treatment system works:

[0049] River, lake and reservoir water is pumped to the intake pump house. The sewage in the intake pump house is introduced into the housing 21 through a static pipeline mixer. PAC or PAM agents are added into the static pipeline mixer through the first chemical dosing device. The sewage entering the housing 21 is electrolyzed by the electrode plate group 24 to kill algae and most microorganisms in the sewage. Then it is introduced into the sedimentation layer 31, and solid-liquid separation is carried out successively through the first inclined tube packing layer 32 and the second inclined tube packing layer 33. Then the sewage enters the supernatant layer 34 and is introduced into the water collecting hopper 81 from the overflow weir 7, and then is introduced into the bottom side of the sewage discharge layer 43 through the buffer pipeline 82. After the sewage passes through the filter layer 42 and is filtered again through the filter cap 45, it is introduced into the clear water layer 41. The clear water formed in the clear water layer 41 is introduced into the drainage chamber 44 through the clear water conduit 46 for collection. The clear water collected in the drainage chamber 44 is introduced into the clear water tank through a pipeline for collection. After the second chemical dosing device adds sodium hypochlorite into the clear water tank for disinfection treatment, the water quality meets the effluent requirements and can be connected to the water use point for use.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A water purification system, characterized in that: include: Dosing unit; An integrated water purifier, the integrated water purifier comprising an electrochemical pretreatment unit, a flocculation sedimentation unit and a filtration unit connected in sequence, the electrochemical pretreatment unit being connected to the dosing unit; A disinfection unit is connected to the filtration unit.

2. A water purification system according to claim 1, characterized in that: The dosing unit comprises: A static pipeline mixer, wherein the static pipeline mixer is connected to the electrochemical pretreatment unit; A first dosing device is connected to the static pipeline mixer.

3. A water purification system according to claim 1, characterized in that: The disinfection unit comprises: A clear water tank, wherein the clear water tank is connected to the filtering unit; The second dosing device is connected to the clean water tank.

4. A water purification system according to claim 1, characterized in that: The integrated water purifier also includes a mud discharge component that cooperates with the flocculation and sedimentation unit.

5. A water purification system according to claim 1, characterized in that: The integrated water purifier also includes a water-gas backwashing unit coordinated with the filtering unit.

6. A water purification system according to claim 1, characterized in that: The electrochemical pretreatment unit comprises: shell; A water distribution pipe, which is arranged on the bottom wall of the shell and is connected to the dosing unit; A bracket, the bracket is arranged in the shell and located above the water distribution pipe, and the bracket has a liquid conducting hole in the shell that is located above and below the bracket; A plate group, wherein the plate group is arranged on a bracket; The pretreatment water outlet is arranged at the upper part of the side wall of the shell and is connected with the water inlet side of the flocculation and sedimentation unit.

7. A water purification system according to claim 1, characterized in that: The flocculation sedimentation unit comprises a sedimentation layer, a first inclined tube packing layer, a second inclined tube packing layer and a supernatant layer which are arranged in sequence from bottom to top. The supernatant layer is connected to the filtration unit, and the sedimentation layer is connected to the water outlet of the electrochemical pretreatment unit.

8. A water purification system according to claim 1, characterized in that: The filtration unit comprises a clean water layer, a filter layer, a sewage layer and a drainage chamber arranged from bottom to top, the clean water layer and the filter layer are connected through a plurality of filter caps arranged at the bottom of the filter layer, the filter layer and the sewage layer are directly connected, the sewage layer and the drainage chamber are independently arranged and connected through a clean water conduit, and the drainage chamber is connected to the disinfection unit; The sewage discharge layer is connected to the water outlet side of the flocculation sedimentation unit through a conducting component, and the water inlet of the conducting component is higher than the water outlet of the clean water conduit.

9. A water purification system according to claim 8, characterized in that: The conducting component comprises: A water collecting hopper, the water collecting hopper being connected to the water outlet side of the flocculation sedimentation unit; A buffer pipe, one end of which is connected to the bottom of the water collecting bucket and the other end of which extends downward to the clean water layer, then bends and then extends upward to the bottom side of the sewage discharge layer.

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