CN111018207A - Membrane method iron and manganese removing equipment - Google Patents
Membrane method iron and manganese removing equipment Download PDFInfo
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- CN111018207A CN111018207A CN201911258383.1A CN201911258383A CN111018207A CN 111018207 A CN111018207 A CN 111018207A CN 201911258383 A CN201911258383 A CN 201911258383A CN 111018207 A CN111018207 A CN 111018207A
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- water
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- 239000012528 membrane Substances 0.000 title claims abstract description 160
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 107
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 77
- 239000011572 manganese Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 67
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 253
- 238000001914 filtration Methods 0.000 claims abstract description 160
- 150000002500 ions Chemical class 0.000 claims abstract description 40
- 239000004576 sand Substances 0.000 claims abstract description 40
- 230000001954 sterilising effect Effects 0.000 claims abstract description 27
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 23
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 18
- 238000005189 flocculation Methods 0.000 claims abstract description 18
- 230000016615 flocculation Effects 0.000 claims abstract description 18
- 239000008394 flocculating agent Substances 0.000 claims abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000005374 membrane filtration Methods 0.000 claims abstract description 7
- 239000012466 permeate Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 42
- 230000008569 process Effects 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- 241000220317 Rosa Species 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 5
- 229910001437 manganese ion Inorganic materials 0.000 claims description 5
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 4
- 230000003311 flocculating effect Effects 0.000 claims description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical group [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 3
- 239000003818 cinder Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000746 purification Methods 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 abstract 1
- 239000003651 drinking water Substances 0.000 description 8
- 235000020188 drinking water Nutrition 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 230000003197 catalytic effect Effects 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 235000014413 iron hydroxide Nutrition 0.000 description 5
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000009287 sand filtration Methods 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/206—Manganese or manganese compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
The invention discloses membrane-process iron and manganese removal equipment, which comprises a raw water tank, a flocculation device, a sterilization device, a manganese sand filter, a multi-medium filter, a reduction device, a scale inhibitor device, a security filter, a pretreatment water tank, a membrane filtering device, a water production tank and a blending device, wherein the flocculation device is arranged in the raw water tank; oxygen is introduced into the raw water pool through an aeration blower, a flocculating agent is added through a flocculation device, the raw water pool is sterilized through a sterilization device, the raw water pool is subjected to adsorption filtration through a manganese sand filter and a multi-media filter, a reducing agent is added through a reduction device, a scale inhibitor is added through a scale inhibitor device, the raw water pool is filtered through a security filter, and finally a membrane filtration device is adopted for removing iron and manganese through a membrane method, so that the raw water purification effect is good; when the manganese sand is used for removing iron, the filter material can be recycled; the membrane filtering device reduces the probability that the ion filtering membrane is damaged due to overlarge impact force of water caused by excessive impurities; the raw water ion filtering membrane can only permeate from the side surface of the ion filtering membrane, so that the raw water is thoroughly purified.
Description
Technical Field
The invention relates to the technical field of drinking water purification, in particular to a membrane method iron and manganese removing device.
Background
The drinking water safety in rural areas is one of the most outstanding environmental problems in the construction of new rural areas in China, the water environment quality deterioration trend of rural areas in local areas is obvious, the pollution of surface water and underground water is serious, and the drinking water of people and livestock is difficult, the contents of iron and manganese in part of underground water in flush plain areas near positive lakes and Dongting lakes in China, the three rivers plain areas in northeast China, the plain areas in Liaoliang rivers and the Jianghuang plain areas in the middle and lower reaches of Yangtze rivers are high, and meanwhile, the problem of organic matter pollution exists, and the body health of local masses is seriously threatened.
The 'old three-stage' process of coagulating sedimentation, filtering and disinfection treatment is still used in most water works at present. The water source with better water quality is suitable, pollutants such as suspended matters, colloidal substances, bacteria and the like in water can be effectively removed, but the removal effect on metal ions, organic pollutants and soluble chemical substances is limited, the harm caused by water pollution can not be completely eliminated, and particularly the underground water which is high in iron and manganese content and is polluted by organic matters is not completely eliminated.
Therefore, the application No. 200910115018.5 discloses a method for purifying drinking water in rural areas, which comprises jet aeration, quartz sand filtration, manganese sand filtration, security filtration and nanofiltration, so that harmful substances such as organic pollutants, heavy metal ions, bacteria and viruses in water are removed, trace elements and mineral substances beneficial to human bodies are retained, the quality of effluent is stable, high-quality and healthy drinking water can be obtained, and the following defects still exist: (1) the aeration method can only be used for the water with small content of iron ions, and the aeration only reduces the content of the iron ions and can not meet the requirements of national standards; the manganese sand filter material adsorption method is easy to saturate and not easy to regenerate, the filter material is frequently replaced, the initial use effect is good, and the quality of produced water is not obviously reduced after running for 1-3 months; the resin adsorption method has strong adsorption capacity on metal ions, but is troublesome to operate, so that the resin poisoning phenomenon is easily caused, once the resin is poisoned, the resin poisoning phenomenon is difficult to recover, continuous regeneration is required in the operation process, the dosage of acid and alkali medicaments is large, secondary pollution is caused by regenerated water, the discharge does not reach the standard, secondary treatment is required, and the operation cost is high; (2) when the used membrane is used for filtering, the filtering effect of impurities in raw water is poor, so that the filtering membrane is easy to damage and is not easy to replace after the filtering membrane is damaged; (3) the rural drinking water purification method has poor effect of filtering raw water by using the filtering membrane.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a membrane method iron and manganese removing device which comprises the following steps: (1) oxygen is introduced into the raw water pool through an aeration blower, a flocculating agent is added into the raw water through a flocculation device, the raw water is sterilized through a sterilization device, the raw water is adsorbed and filtered through a manganese sand filter and a multi-media filter, a reducing agent is added through a reduction device, a scale inhibitor is added through a scale inhibitor device, the raw water is conveyed to a security filter for filtration and then conveyed to a pretreatment water tank, and finally iron and manganese are removed through a membrane method by adopting a membrane filtering device, so that the problem that the obtained water cannot meet the national standard requirement when the raw water is treated by adopting an aeration method in the conventional drinking water purification method is solved; when the manganese sand is used for removing iron, besides the catalytic effect, an iron filter membrane is gradually formed on the surface of a refined manganese sand filter material during filtering to serve as an active filter membrane, the active filter membrane is composed of R-type iron hydroxide, and newly generated iron hydroxide serves as an active filter membrane substance and participates in a new catalytic iron removal process, so that the filter material can be recycled, and the problems that an existing manganese sand filter material adsorption method is easy to saturate, is not easy to regenerate and is frequently replaced are solved; the process of treating raw water by the membrane method is pure physical filtration, no chemical agent is added, the whole process is very environment-friendly, and the problems that the operation of the existing resin adsorption method is relatively troublesome and the resin poisoning phenomenon is easily caused are solved; (2) the first filtering box and the second filtering box are arranged at the two ends of the filtering box, impurities in water are further removed, the probability that the ion filtering membrane is damaged due to the impurities is greatly reduced, the first buffer groove and the second buffer groove are respectively arranged at the two ends inside the filtering box, the impact force generated by raw water conveyed by the pressurizing conveying pump is reduced, the probability that the ion filtering membrane is damaged due to overlarge impact force of water is greatly reduced, when the ion filtering membrane is damaged, the replacing cover cap body can be opened to take out the filtering membrane mounting frame, a new ion filtering membrane is replaced, and the problems that when the membrane used in the existing process is used for filtering, the impurity filtering effect in the raw water is poor, the filtering membrane is easy to damage, and the filtering membrane is difficult to replace after being damaged are solved; (3) through seting up a plurality of inlet openings at first mounting panel, inside inlet opening intercommunication ion filtration membrane, the ion filtration membrane other end blockked through the second mounting panel, sealed for inside the raw water got into ion filtration membrane from the inlet opening, can only follow the infiltration of ion filtration membrane side and go out, make the thorough of raw water purification, the raw water filters through once filter, secondary filter carries out twice ion filtration membrane in addition, has solved the not good problem of effect that current drinking water purification method used filtration membrane to filter the raw water.
The purpose of the invention can be realized by the following technical scheme:
the membrane method iron and manganese removing equipment comprises a raw water pool, a manganese sand filter and a membrane filtering device, wherein a raw water inlet pipe is installed on one side of the bottom of the raw water pool, an aeration blower is installed at the top of one side of the raw water pool through a pipeline, a flocculation device is communicated with the bottom of one side, far away from the raw water inlet pipe, of the raw water pool through a pressurizing conveying pump, a sterilization device is arranged on one side, far away from the pressurizing conveying pump, of the flocculation device, the sterilization device is communicated to the middle of the manganese sand filter through a pipeline, the middle of one side, far away from the sterilization device, of the manganese sand filter is communicated to the middle of a multi-media filter, a first slag discharge groove is connected to the bottom of one side, far away from the manganese sand filter, of the multi-media filter is provided with a reduction, the scale inhibitor device communicates to the safety filter top through the pipeline, the safety filter is kept away from scale inhibitor device one side bottom and is communicated to preliminary treatment water tank through the pipeline, preliminary treatment water tank is kept away from safety filter one side and has membrane filter equipment through booster pump intercommunication, membrane filter equipment is kept away from preliminary treatment water tank one end and is communicated to producing the water tank top through the pipeline, it keeps away from membrane filter equipment one side and preliminary treatment water tank and keeps away from safety filter one side and all communicates to mingling the device through booster pump intercommunication to blending device, it establishes with the water spot through the pipeline to mingle the device export.
As a further scheme of the invention: the flocculation device is used for adding a flocculating agent into raw water, the flocculating agent is polyaluminum ferric chloride, and the sterilization device is an ultraviolet sterilization sterilizer.
As a further scheme of the invention: the filter material in the manganese sand filter is manganese sand, and the filter material in the multi-medium filter is a mixture of quartz sand, manganese sand and activated carbon.
As a further scheme of the invention: the reducing device is used for adding a reducing agent into raw water, the reducing agent is sodium bisulfite, and the scale inhibitor device is used for adding a scale inhibitor into the raw water.
As a further scheme of the invention: the filter element of the cartridge filter is made of one or more of PP cotton, nylon and polypropylene.
As a further scheme of the invention: the membrane filtering device comprises a primary filter and a secondary filter, wherein the primary filter and the secondary filter respectively comprise a plurality of filtering boxes, a first filtering box and a second filtering box, a replacing port is formed in each filtering box, a replacing port cover body is connected to each replacing port in a rotating mode, each replacing port cover body is sealed through a bolt, the first filtering boxes are mounted at two ends of each filtering box through pipelines, and the second filtering boxes are mounted at one sides, far away from the filtering boxes, of the first filtering boxes at the two ends;
rose box one end is equipped with the water inlet, the rose box is kept away from water inlet one end and is equipped with the delivery port, rose box inside block is connected with filtration membrane mounting bracket, filtration membrane mounting bracket one side is equipped with first dashpot, filtration membrane mounting bracket is kept away from first dashpot one side and is equipped with the second dashpot, first dashpot is connected to the water inlet, the second dashpot is connected to the delivery port.
As a further scheme of the invention: the utility model discloses a filter membrane protection frame, including filtration membrane mounting bracket, first mounting panel is installed to filtration membrane protection frame one end, and it is a plurality of the filtration membrane protection frame is kept away from first mounting panel one end and is installed the second mounting panel, a plurality of inlet openings have been seted up to the equidistance on the first mounting panel, and is a plurality of the inlet opening communicates inside a plurality of filtration membrane protection frames, second mounting panel central point puts and has seted up the wash port, the wash port communicates to between a plurality of filtration membrane protection frames, the filtration membrane protection frame comprises a plurality of support bars, filtration membrane protection frame internally mounted has filtration membrane, filtration membrane is connected with first mounting panel, second mounting panel respectively, filtration membrane is the RO membrane.
As a further scheme of the invention: the first filter box is filled with activated carbon, and the second filter box is filled with filter sponge.
As a further scheme of the invention: the working process of the membrane method iron and manganese removing equipment is as follows:
the method comprises the following steps: the method comprises the following steps that raw water enters a raw water tank from a raw water inlet pipe, when the volume of the raw water in the raw water tank exceeds half of that of the raw water tank, an aeration blower is started, and the aeration blower operates to introduce air into the raw water in the raw water tank;
step two: starting a booster pump to pump the raw water out and convey the raw water forwards, adding a flocculating agent into the raw water through a flocculation device, sterilizing the raw water through a sterilization device, and precipitating suspended iron, manganese and other organic matters in the raw water after flocculation;
step three: removing iron, manganese ions and flocculate in water by a manganese sand filter and a multi-media filter, and discharging the water into a first slag discharge groove and a second slag discharge groove;
step four: the raw water is continuously conveyed forwards, a reducing agent is added through a reduction device, a scale inhibitor is added through a scale inhibitor device, and the raw water is conveyed to a cartridge filter for filtration and then conveyed to a pretreatment water tank;
step five: the pretreatment water tank stores raw water filtered by the cartridge filter, the raw water is conveyed to the membrane filtering device through the booster conveying pump to be filtered, the raw water is conveyed to the production water tank to be stored, the raw water is conveyed to the blending device through the booster conveying pump to be blended with the raw water from the pretreatment water tank, purified water capable of being directly drunk is obtained, at the moment, the iron content in the water is less than or equal to 0.3mg/L, and the manganese content is less than or equal to 0.1 mg/L.
As a further scheme of the invention: the working process of the membrane filtering device is as follows:
the method comprises the following steps: raw water conveyed from the pretreatment water tank to the membrane filtering device enters a primary filter, is filtered by a second filtering box and a first filtering box, and then enters a first buffer tank in the filtering tank from a water inlet;
step two: raw water enters the plurality of filtering membrane protection frames from the plurality of water inlet holes on the first mounting plate respectively, the raw water enters the ion filtering membranes for filtering, impurities are left in the ion filtering membranes, the water permeates out of the ion filtering membranes, and the water is gathered to the water outlet holes on the second mounting plate and is discharged to the second buffer tank;
step three: the raw water in the second buffer tank is discharged from the water outlet, filtered by the first filter box and the second filter box and then conveyed to the secondary filter;
step four: and (4) repeating the steps for the raw water conveyed to the secondary filter, carrying out secondary filtration in the secondary filter, and conveying the filtered raw water to the water production tank.
The invention has the beneficial effects that:
(1) the invention relates to a membrane method iron and manganese removing device, which comprises introducing oxygen into a raw water pool through an aeration blower, oxidizing low-valent iron ions and low-valent manganese ions in water into high-valent iron ions and high-valent manganese ions, adding a flocculating agent into the raw water through a flocculation device, sterilizing through a sterilization device, flocculating and precipitating suspended iron, manganese and other organic matters in the raw water, performing adsorption filtration through a manganese sand filter and a multi-medium filter, adsorbing other pollutants in the water by using refined quartz sand, refined manganese sand and high-quality activated carbon as filter materials, wherein the refined manganese sand mainly comprises manganese dioxide which is a catalyst with good oxidation of divalent iron ions into trivalent iron ions, and has an ideal iron removing effect, and finally generating Fe (OH)3Removing the precipitate after passing through a refined manganese sand filter layer;
when the manganese sand is used for removing iron, besides the catalytic action, an iron filter membrane is gradually formed on the surface of a refined manganese sand filter material during filtering to serve as an active filter membrane, the active filter membrane is composed of R-type iron hydroxide R-FeO (OH), can perform ion exchange reaction with Fe2+, replaces equivalent hydrogen ions, is combined with divalent iron in a compound, can perform oxidation and hydrolysis reaction rapidly, and regenerates iron oxide of the iron hydroxide to regenerate catalytic substances, and the newly generated iron hydroxide is used as an active filter membrane substance to participate in a new catalytic iron removal process, so that the active filter membrane iron removal process is an automatic catalytic process, the filter material can be recycled, the filter material does not need to be frequently replaced, and the cost is reduced;
finally, a membrane filtration device is adopted for removing iron and manganese by a membrane method, as the aperture of the ion filtration membrane is far smaller than the diameters of iron, manganese, calcium, magnesium and other ions and the diameters of escherichia coli and other conventional bacterial colonies, basically only water molecules can penetrate through the membrane, so that the raw water treated by the membrane method becomes abnormally clean and has good purification effect, and the process of treating the raw water by the membrane method is pure physical filtration without adding any chemical agent, so that the whole process is very environment-friendly;
the membrane method iron and manganese removing equipment is a novel iron and manganese removing process which takes pressure as a driving force, combines aeration and manganese sand filter material adsorption interception and takes a special reverse osmosis membrane as a core, the process is convenient to operate, the quality of produced water reaches the standard and can be stable for a long time, the produced wastewater can directly reach the standard and be discharged, other harmful ions and bacterial colonies are removed together while iron and manganese are removed, the purification effect is good, and the membrane method iron and manganese removing equipment is suitable for the water quality requirements of different areas;
(2) the membrane filtering device of the invention filters raw water to remove most impurities through the filtration of the previous steps by being arranged at the last stage of the equipment for removing ferro-manganese by the membrane method, further removes the impurities in water by arranging the first filtering box and the second filtering box at the two ends of the filtering box, greatly reduces the damage probability of the ion filtering membrane caused by the impurities, and arranges the first buffer tank and the second buffer tank at the two ends of the inner part of the filtering box respectively to reduce the impact force generated by the raw water conveyed by the booster conveying pump, greatly reduces the damage probability of the ion filtering membrane caused by the overlarge impact force of the water, and protects the ion filtering membrane arranged in the filtering membrane protection frame, a plurality of filtering membrane protection frames are arranged on the filtering membrane mounting frame which is clamped and connected with the inner part of the filtering box, the replacement opening cover body can be opened to take out the filtering membrane mounting frame, so that a new ion filtering membrane can be replaced, and the use is convenient;
(3) according to the membrane filtering device, the first mounting plate is provided with the plurality of water inlet holes, the water inlet holes are communicated with the interior of the ion filtering membrane, and the other end of the ion filtering membrane is blocked and sealed by the second mounting plate, so that raw water enters the interior of the ion filtering membrane from the water inlet holes and can only permeate from the side surface of the ion filtering membrane, the raw water is thoroughly purified, and the raw water is filtered by the ion filtering membrane twice through the primary filter and the secondary filter, so that the filtering effect is good.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a process flow block diagram of a device for removing iron and manganese by a membrane method in the invention;
FIG. 2 is a schematic structural diagram of a device for removing iron and manganese by a membrane method in the invention;
FIG. 3 is a schematic view of the structure of a membrane filtration unit according to the present invention;
FIG. 4 is a schematic view of the construction of the filtration tank of the present invention;
FIG. 5 is a schematic view showing the internal structure of the filtration tank of the present invention;
FIG. 6 is a schematic view of the filter membrane mounting bracket of the present invention;
FIG. 7 is a front view of the first mounting plate of the present invention;
FIG. 8 is a front view of a second mounting plate of the present invention;
FIG. 9 is a schematic view of the filter membrane protective bracket according to the present invention;
FIG. 10 is a schematic view of an ion filtration membrane assembly of the present invention.
In the figure: 1. an aeration blower; 2. a raw water pool; 3. a booster transfer pump; 4. a flocculation device; 5. a sterilizing device; 6. a manganese sand filter; 7. a first slag discharge groove; 8. a multi-media filter; 9. a second slag discharge groove; 10. a reduction device; 11. a scale inhibitor device; 12. a raw water inlet pipe; 13. a water production tank; 14. water consumption; 15. a blending device; 16. a membrane filtration device; 17. a pretreatment water tank; 18. a cartridge filter; 21. a primary filter; 22. a secondary filter; 23. a filter box; 24. replacing the mouth cover body; 25. a first filter cassette; 26. a second filter cassette; 27. a water inlet; 28. a first buffer tank; 29. a filter membrane mounting frame; 30. a second buffer tank; 31. a water outlet; 32. a first mounting plate; 33. a filter membrane protection bracket; 34. a second mounting plate; 35. a water inlet hole; 36. a drain hole; 37. a supporting strip; 38. an ion filtration membrane.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-10, the present embodiment is a membrane process iron and manganese removing apparatus, including a raw water tank 2, a manganese sand filter 6, and a membrane filter device 16, wherein a raw water inlet pipe 12 is installed at one side of the bottom of the raw water tank 2, an aeration blower 1 is installed at the top of one side of the raw water tank 2 through a pipeline, the bottom of one side of the raw water tank 2 away from the raw water inlet pipe 12 is communicated with a flocculation device 4 through a booster pump 3, a sterilization device 5 is installed at one side of the flocculation device 4 away from the booster pump 3, the sterilization device 5 is communicated with the middle of the manganese sand filter 6 through a pipeline, the middle of one side of the manganese sand filter 6 away from the sterilization device 5 is communicated with the middle of a multimedia filter 8, the bottom of one side of the manganese sand filter 6 is connected with a first slag discharge groove 7 through a pipeline, a reduction, the reduction device 10 is provided with a scale inhibitor device 11 on one side far away from the multi-media filter 8, the scale inhibitor device 11 is communicated to the top of a security filter 18 through a pipeline, the bottom of one side, far away from the scale inhibitor device 11, of the security filter 18 is communicated to a pretreatment water tank 17 through a pipeline, one side, far away from the security filter 18, of the pretreatment water tank 17 is communicated with a membrane filter device 16 through a booster delivery pump 3, one end, far away from the pretreatment water tank 17, of the membrane filter device 16 is communicated to the top of a production water tank 13 through a pipeline, one side, far away from the membrane filter device 16, of the production water tank 13 and one side, far away from the security filter 18, of the pretreatment water tank.
Specifically, the flocculation device 4 is used for adding a flocculating agent into raw water, and the flocculating agent is used as the flocculating agent, and the sterilization device 5 is an ultraviolet sterilization sterilizer; the filter material in the manganese sand filter 6 is manganese sand, and the filter material in the multi-medium filter 8 is a mixture of quartz sand, manganese sand and active carbon; the reducing device 10 is used for adding a reducing agent into raw water, the reducing agent is sodium bisulfite, and the scale inhibitor device 11 is used for adding a scale inhibitor into the raw water; the material of the filter core of the cartridge filter 18 is one or more of PP cotton, nylon and polypropylene.
The membrane filtering device 16 comprises a primary filter 21 and a secondary filter 22, the primary filter 21 and the secondary filter 22 both comprise a plurality of filter boxes 23, a first filter box 25 and a second filter box 26, a replacing port is formed in each filter box 23, a replacing port cover body 24 is connected to the replacing port in a rotating mode, the replacing port cover body 24 seals the replacing port through bolts, the first filter boxes 25 are mounted at two ends of each filter box 23 through pipelines, and the second filter boxes 26 are mounted on the sides, far away from the filter boxes 23, of the first filter boxes 25 at the two ends;
23 one end of rose box is equipped with water inlet 27, and the rose box 23 is kept away from water inlet 27 one end and is equipped with delivery port 31, and the inside block of rose box 23 is connected with filtration membrane mounting bracket 29, and filtration membrane mounting bracket 29 one side is equipped with first dashpot 28, and filtration membrane mounting bracket 29 is kept away from first dashpot 28 one side and is equipped with second dashpot 30, and first dashpot 28 is connected to water inlet 27, and second dashpot 30 is connected to delivery port 31.
The filtering membrane mounting rack 29 comprises a plurality of filtering membrane protection racks 33, a first mounting plate 32 is mounted at one end of each filtering membrane protection rack 33, a second mounting plate 34 is mounted at one end, away from the first mounting plate 32, of each filtering membrane protection rack 33, a plurality of water inlet holes 35 are formed in the first mounting plate 32 at equal angles, the plurality of water inlet holes 35 are communicated with the insides of the plurality of filtering membrane protection racks 33, a water outlet hole 36 is formed in the center of the second mounting plate 34, the water outlet hole 36 is communicated between the plurality of filtering membrane protection racks 33, each filtering membrane protection rack 33 is composed of a plurality of supporting bars 37, an ion filtering membrane 38 is mounted inside each filtering membrane protection rack 33, each ion filtering membrane 38 is respectively connected with; the first filter cassette 25 is filled with activated carbon, and the second filter cassette 26 is filled with filter sponge.
Referring to fig. 1-10, the working process of the membrane-method iron and manganese removing equipment in this embodiment is as follows:
the method comprises the following steps: raw water enters a raw water pool 2 from a raw water inlet pipe 12, when the volume of the raw water in the raw water pool 2 exceeds half of that of the raw water pool 2, an aeration blower 1 is started, and the aeration blower 1 operates to introduce air into the raw water in the raw water pool 2;
step two: starting a booster pump 3 to pump the raw water tank 2 out for forward conveying, adding a flocculating agent into the raw water through a flocculation device 4, sterilizing through a sterilization device 5, flocculating and precipitating suspended iron, manganese and other organic matters in the raw water;
step three: removing iron, manganese ions and flocculate in water through a manganese sand filter 6 and a multi-media filter 8, and discharging the water into a first slag discharge groove 7 and a second slag discharge groove 9;
step four: the raw water is continuously conveyed forwards, a reducing agent is added through a reduction device 10, a scale inhibitor is added through a scale inhibitor device 11, and the raw water is conveyed to a cartridge filter 18 for filtration and then conveyed to a pretreatment water tank 17;
step five: the pretreatment water tank 17 stores raw water filtered by the security filter 18, the raw water is conveyed to the membrane filtering device 16 through the booster pump 3 to be filtered, the raw water is conveyed to the production water tank 13 to be stored, the raw water conveyed by the booster pump 3 and the pretreatment water tank 17 is conveyed to the blending device 15 to be blended, and purified water which can be directly drunk is obtained, wherein the iron content in the water is less than or equal to 0.3mg/L, and the manganese content in the water is less than or equal to 0.1 mg/L.
Referring to fig. 1-10, the operation of the membrane filtration device of the present embodiment is as follows:
the method comprises the following steps: the raw water sent from the pretreatment water tank 17 to the membrane filtration device 16 enters the primary filter 21, is filtered by the second filter cassette 26 and the first filter cassette 25, and then enters the first buffer tank 28 inside the filter tank 23 from the water inlet 27;
step two: raw water enters the plurality of filtering membrane protection frames 33 from the plurality of water inlet holes 35 on the first mounting plate 32 respectively, the raw water enters the ion filtering membrane 38 for filtering, impurities are left in the ion filtering membrane 38, the water permeates out from the ion filtering membrane 38 and is converged to the water drain holes 36 on the second mounting plate 34 to be discharged to the second buffer tank 30;
step three: the raw water in the second buffer tank 30 is discharged from the water outlet 31, filtered by the first filter cassette 25 and the second filter cassette 26, and then conveyed to the secondary filter 22;
step four: the raw water sent to the secondary filter 22 is subjected to secondary filtration in the secondary filter 22 by repeating the above steps, and the filtered raw water is sent to the product water tank 13.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (10)
1. Membrane method iron and manganese removing equipment, which is characterized by comprising a raw water tank (2), a manganese sand filter (6) and a membrane filtering device (16), wherein a raw water inlet pipe (12) is installed on one side of the bottom of the raw water tank (2), an aeration blower (1) is installed on the top of one side of the raw water tank (2) through a pipeline, a flocculation device (4) is communicated with the bottom of one side, away from the raw water inlet pipe (12), of the raw water tank (2) through a booster conveying pump (3), a sterilization device (5) is arranged on one side, away from the booster conveying pump (3), of the flocculation device (4), the sterilization device (5) is communicated to the middle of the manganese sand filter (6) through a pipeline, the middle of one side, away from the sterilization device (5), of the manganese sand filter (6) is communicated to the middle of a medium filter (8) at most, and the, multimedium filter (8) keep away from manganese sand filter (6) one side and be equipped with reduction device (10), multimedium filter (8) one side bottom is equipped with second row cinder groove (9), and reduction device (10) are kept away from multimedium filter (8) one side and are equipped with antisludging agent device (11), antisludging agent device (11) communicate to safety filter (18) top through the pipeline, safety filter (18) are kept away from antisludging agent device (11) one side bottom and are communicate to preliminary treatment water tank (17) through the pipeline, preliminary treatment water tank (17) are kept away from safety filter (18) one side and are communicated through booster pump (3) have membrane filter equipment (16), membrane filter equipment (16) are kept away from preliminary treatment water tank (17) one end and are communicated to product water tank (13) top through the pipeline, product water tank (13) are kept away from membrane filter equipment (16) one side and preliminary treatment water tank (17) and are kept away from safety filter (18) one (3) Communicated to a blending device (15), and the outlet of the blending device (15) is provided with a water spot (14) through a pipeline.
2. The membrane-method iron and manganese removal equipment according to claim 1, wherein the flocculation device (4) is used for adding a flocculating agent into raw water, the flocculating agent is polyaluminum ferric chloride, and the sterilization device (5) is an ultraviolet sterilization sterilizer.
3. The equipment for removing iron and manganese by using the membrane method according to claim 1, wherein the filter material in the manganese sand filter (6) is manganese sand, and the filter material in the multi-media filter (8) is a mixture of quartz sand, manganese sand and activated carbon.
4. The membrane method iron and manganese removal equipment according to claim 1, wherein the reduction device (10) is used for adding a reducing agent into raw water, the reducing agent is sodium bisulfite, and the scale inhibitor device (11) is used for adding a scale inhibitor into the raw water.
5. The equipment for removing ferro-manganese by membrane method according to claim 1, characterized in that the material of the filter element of the cartridge filter (18) is one or more of PP cotton, nylon and polypropylene.
6. The membrane-method iron and manganese removing equipment according to claim 1, wherein the membrane filtering device (16) is composed of a primary filter (21) and a secondary filter (22), the primary filter (21) and the secondary filter (22) respectively comprise a plurality of filtering boxes (23), a first filtering box (25) and a second filtering box (26), a replacing port is formed in each filtering box (23), a replacing port cover body (24) is connected to the replacing port in a rotating mode, the replacing port cover body (24) seals the replacing port through bolts, the two ends of each filtering box (23) are respectively provided with the first filtering box (25) through pipelines, and the side, far away from the filtering box (23), of each first filtering box (25) at the two ends is provided with the second filtering box (26);
rose box (23) one end is equipped with water inlet (27), rose box (23) are kept away from water inlet (27) one end and are equipped with delivery port (31), rose box (23) inside block is connected with filtration membrane mounting bracket (29), filtration membrane mounting bracket (29) one side is equipped with first dashpot (28), first dashpot (28) one side is kept away from in filtration membrane mounting bracket (29) is equipped with second dashpot (30), first dashpot (28) are connected in water inlet (27), second dashpot (30) are connected in delivery port (31).
7. The membrane-method iron and manganese removing equipment according to claim 6, wherein the filtering membrane mounting rack (29) comprises a plurality of filtering membrane protecting racks (33), a first mounting plate (32) is mounted at one end of each filtering membrane protecting rack (33), a second mounting plate (34) is mounted at one end, away from the first mounting plate (32), of each filtering membrane protecting rack (33), a plurality of water inlet holes (35) are formed in the first mounting plate (32) at equal angles, the plurality of water inlet holes (35) are communicated with the inside of the filtering membrane protecting racks (33), a water outlet hole (36) is formed in the center of the second mounting plate (34), the water outlet hole (36) is communicated between the plurality of filtering membrane protecting racks (33), each filtering membrane protecting rack (33) is composed of a plurality of supporting bars (37), and an ion filtering membrane (38) is mounted inside each filtering membrane protecting rack (33), the ion filtering membrane (38) is respectively connected with the first mounting plate (32) and the second mounting plate (34), and the ion filtering membrane (38) is an RO membrane.
8. The membrane process iron and manganese removal equipment according to claim 6, wherein the first filter box (25) is filled with activated carbon, and the second filter box (26) is filled with filter sponge.
9. The membrane method ferromanganese removal device as claimed in claim 1, wherein the working process of the membrane method ferromanganese removal device is as follows:
the method comprises the following steps: raw water enters a raw water pool (2) from a raw water inlet pipe (12), when the volume of the raw water in the raw water pool (2) exceeds half of that of the raw water pool (2), an aeration blower (1) is started, and the aeration blower (1) operates to introduce air into the raw water in the raw water pool (2);
step two: starting a booster pump (3) to pump out the raw water pool (2) and convey the raw water forward, adding a flocculating agent into the raw water through a flocculating device (4), sterilizing the raw water through a sterilizing device (5), and flocculating and precipitating suspended iron, manganese and other organic matters in the raw water;
step three: removing iron, manganese ions and flocculate in water through a manganese sand filter (6) and a multi-medium filter (8), and discharging the water into a first slag discharge groove (7) and a second slag discharge groove (9);
step four: the raw water is continuously conveyed forwards, a reducing agent is added through a reduction device (10), a scale inhibitor is added through a scale inhibitor device (11), and the raw water is conveyed to a cartridge filter (18) for filtration and then conveyed to a pretreatment water tank (17);
step five: the pretreatment water tank (17) stores the raw water filtered by the security filter (18), the raw water is conveyed to the membrane filtering device (16) through the booster pump (3) to be filtered, and then conveyed to the production water tank (13) to be stored, the raw water conveyed by the booster pump (3) and the pretreatment water tank (17) is conveyed to the blending device (15) to be blended, and the purified water which can be directly drunk is obtained, wherein the iron content in the water is less than or equal to 0.3mg/L, and the manganese content is less than or equal to 0.1 mg/L.
10. The membrane method iron and manganese removal equipment as claimed in claim 6, wherein the membrane filtering device works as follows:
the method comprises the following steps: raw water conveyed from the pretreatment water tank (17) to the membrane filtration device (16) enters a primary filter (21), is filtered by a second filter box (26) and a first filter box (25), and then enters a first buffer tank (28) in the filter tank (23) from a water inlet (27);
step two: raw water enters a plurality of filtering membrane protection frames (33) from a plurality of water inlet holes (35) on a first mounting plate (32) respectively, the raw water enters an ion filtering membrane (38) for filtering, impurities are left in the ion filtering membrane (38), water permeates out from the ion filtering membrane (38) and converges to a water outlet hole (36) on a second mounting plate (34) to be discharged to a second buffer tank (30);
step three: the raw water in the second buffer tank (30) is discharged from a water outlet (31), filtered by the first filter box (25) and the second filter box (26) and then conveyed to the secondary filter (22);
step four: the raw water conveyed to the secondary filter (22) is subjected to secondary filtration in the secondary filter (22) by repeating the steps, and the filtered raw water is conveyed to the water production tank (13).
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