CN2848838Y - Nano-filtering membrane composite deep water purification device - Google Patents

Nano-filtering membrane composite deep water purification device Download PDF

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Publication number
CN2848838Y
CN2848838Y CN 200520048116 CN200520048116U CN2848838Y CN 2848838 Y CN2848838 Y CN 2848838Y CN 200520048116 CN200520048116 CN 200520048116 CN 200520048116 U CN200520048116 U CN 200520048116U CN 2848838 Y CN2848838 Y CN 2848838Y
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pipeline
water
nanofiltration
ozone
activated carbon
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CN 200520048116
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Chinese (zh)
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薛罡
刘亚男
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Donghua University
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Donghua University
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Abstract

The utility model discloses a nano-filtering membrane combining deep water purification device, which comprises a raw water tank 3, a micro flocculation sand filtering tank 6, an ozone reaction tank 6, and an activated carbon filter tank 9 which are orderly connected through pipelines, wherein the activated carbon filter tank 9 is orderly connected with a nano-filtering pressure pump 12, a security filter element 13 and nano-filtering membrane components 14, 15 through pipelines. The utility model has the advantages that the utility model provides an apparatus for preparing good quality and health drinking water, the total effect is better than the reverse osmosis membrane technology, and the ultra filtering membrane technology, etc. The operating pressure of the nano-filtering membrane is lower than the reverse osmosis, the energy consumption for treating water can be saved and the cost is low.

Description

A kind of nanofiltration membrane combined depth purifier
Technical field
The utility model relates to a kind of drinking water deep purification technology, particularly relates to a kind of nanofiltration membrane combined depth purifier.
Background technology
In recent years, mould material science and water technology constantly intersect infiltration, the emerging cross discipline that has been born-" embrane method water technology ".For the organic separation of small molecules in the water, the effect that membrane technique has other technologies to hardly match.Giving water treatment field, adopt embrane method advanced water purifying technology can remove small organic molecule and disinfection byproduct (DBP) that conventional coagulation, precipitation, filtration process are difficult to remove, can obtain the unapproachable cleaning water quality of conventional processing technology, be the important supplement of routine techniques.
Because the distinct advantages of membrane technique obtains using more widely in Drinking Water in China deep purifying field.At present, commercially available beverage, can pure water and piped direct-drinking water is the product water through the reverse osmosis membrane deep purifying mostly.Though the drinking water deep purification membrane technique is good development momentum, on guiding theory, there are certain mistaken ideas simultaneously.Owing to improve an urgent demand of water quality, make and it is believed that, it is pure more good more to purify effluent quality, so the drinking water deep purification engineering of having built up comprises deionization facilities such as reverse osmosis mostly, though purifying back water removes objectionable impurities, but simultaneously the necessary mineral substance of human body and trace element are also removed dangerous clean, water quality even reached special industry water water quality such as electronics, food, this water is unscientific as tap water.The expert proposes " high-quality, healthy tap water should be the hazardous and noxious substances of having removed in the former water, have kept again in the former water human body beneficial's the trace element and the water of mineral substance simultaneously " by scientific appraisal both at home and abroad.From the nutrition angle, tap water is the important channel of human intake's mineral substance and trace element, the mankind rely on water for a long time during evolution and survive, water mineral and micronutrient levels and ratio have been formed stronger adaptability, in the long-term drinking-water as lack these elements, can cause nutrient imbalance, influence particularly evident the elderly, developmental children; From the economic angle analysis, water treatment to complete deionized degree, has then been caused the huge waste of water processing establishment and energy consumption on the other hand.China has recognized this problem in many areas, stops " drinking pure water " in middle and primary schools as Shanghai City.The common method that solves shortage mineral element in the tap water is for adding physiology salt, mineralising filtration measures such as (as MUSYUSHI), this has increased water producing cost and management difficulty undoubtedly, and be difficult to guarantee to be suitable for the proper ratio of inorganic salt in the water of absorption of human body, not the reasonable and effective method of preparation high-quality, healthy drinking water.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of nanofiltration membrane combined depth purifier, to remedy the deficiencies in the prior art and defective, satisfies the needs of high-quality Drinking Water.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of nanofiltration membrane combined depth purifier, comprise by pipeline connecting former water pot 3, little flocculation sandfiltration pot 6, ozone reaction jar 8 and the activated carbon filtration jar 9 that connects according to this that activated carbon filtration jar 9 is connected with nanofiltration force (forcing) pump 12, security personnel's filter core 13 and nanofiltration membrane component 14,15 successively by pipeline.
As optimized technical scheme: between activated carbon filtration jar 9 and nanofiltration force (forcing) pump 12, be connected to Scale inhibitors solution tank 10 and chemical cleaning solution bucket 11 by pipeline.
By the combination treatment (can increase membrane module quantity) of little flocculation sandfiltration pot 6, ozone reaction jar 8, activated carbon filtration jar 9, nanofiltration membrane component 14, nanofiltration membrane component 15, the city planting ductwork drink water purifying is become the tap water of high-quality, health according to handling the water yield.
Described former water pot 3 is connected with little flocculation sandfiltration pot 6 by pipeline 44, force (forcing) pump 4, pipeline 22.
Quartz sand thickness of filter bed in described little flocculation sandfiltration pot 6 is 800mm, particle diameter 0.8~1.2mm, flocculation agent adopts polymerize aluminum chloride, and adding by flocculant concentration device 5 of flocculation agent adds flocculant of polymeric aluminium chloride by pipeline 21, pipeline 22 in little flocculation sandfiltration pot 6 water inlets.Little flocculation sandfiltration pot 6 is connected with ozone reaction jar 8 by pipeline 32, pipeline 30.
The ozone dosage of described ozone reaction jar 8 is 3~5mg/L, the ozonization time is 12min, ozone takes place, dosing system is made up of air compressor machine 23, gas-holder 24, instrument air dryer 25 and ozonizer 7, be connected by pipeline 26 between air compressor machine 23 and the gas-holder 24, be connected by pipeline 27 between gas-holder 24 and the instrument air dryer 25, be connected by pipeline 28 between instrument air dryer 25 and the ozonizer 7.Add ozone by pipeline 29, pipeline 30 by ozonizer 7 in the water inlet of ozone reaction jar 8, the ozone dosage can be regulated by valve 31.Ozone reaction jar 8 is connected with activated carbon filtration jar 9 by pipeline 33.
Carbon leaching material is the cocoanut active charcoal of high adsorption capacity in the described activated carbon filtration jar 9, and the thick 1000mm of filtering layer, particle diameter of filter medium are 0.8~1.2mm, and filtering velocity is 6.5m/h.
Be connected by pipeline 34, pipeline 35, nanofiltration force (forcing) pump 13 between described activated carbon filtration jar 9 and the nanofiltration force (forcing) pump 12.In operational process, add sulfuric acid or poly-sodium hexametaphosphate solution continuously to prevent the hardness fouling on nanofiltration membrane surface by pipeline 36, pipeline 35 to 12 imports of nanofiltration force (forcing) pump by Scale inhibitors solution tank 10; In the operation week end of term of nanofiltration membrane flux decline 15%, device before the nanofiltration force (forcing) pump is out of service, enter nanofiltration membrane component the pollutent that adheres in face or the fenestra is carried out the cleaning of 30min by pipeline 45, pipeline 35, nanofiltration force (forcing) pump 12, pipeline 37, security personnel's filter core 13, pipeline 38 by configuration acid, alkali or other special-purpose chemicals in the chemical cleaning solution bucket 11, membrane flux is recovered.
Described security personnel's filter core 13 is that the aperture is the microfiltration membrane of 5 μ m, can prevent that the broken end of gac from entering the nanofiltration assembly and cause the physical abuse of nanofiltration membrane.Security personnel's filter core 13 is connected by pipeline 37 with nanofiltration force (forcing) pump 12, and security personnel's filter core 13 is connected by pipeline 38 with nanofiltration membrane component 14.
Connect by pipeline 39, pipeline 40, pipeline 41 between described nanofiltration membrane component 14 and the nanofiltration membrane component 15.The water outlet of security personnel's filter core at first enters nanofiltration membrane component 14, purifying waste water after nanofiltration membrane component 14 filters discharged through pipeline 39, under meter 16, pipeline 17, concentrated solution enters nanofiltration membrane component 15 through pipeline 40 and filters, purify waste water and discharge through pipeline 41, under meter 16, pipeline 17, partial concentration liquid is discharged through pipeline 42, under meter 18, pipeline 19, all the other concentrated solutions are before pipeline 43 is back to nanofiltration force (forcing) pump 12, valve 20 is set regulating the concentrated solution quantity of reflux on pipeline 43, the mode by the backflow concentrated solution increases the film surface velocity and pollutes to alleviate film.Can suitably increase the quantity of nanofiltration membrane component according to handling the water yield in actual applications, both adopt the mode of connection of one-level multistage, the concrete mode of connection of membrane module as mentioned above.
The beneficial effects of the utility model are:
(1) using nanofiltration membrane separation technique, routines such as ozone and activated carbon are removed little pollution method to be difficult to pollution substances such as the small organic molecule thoroughly removed and minim chloroform, adsorbability organic halogen and to have obtained good removal effect, nanofiltration membrane can keep part mineral ion and mineral substance in the tap water simultaneously, for the preparation that has realized " high-quality, healthy drinking water " provides the equipment basis, general effect is better than membrane techniquies such as reverse osmosis, ultrafiltration.
(2) working pressure of nanofiltration membrane is lower than reverse osmosis, can save the water treatment energy consumption, reduces cost.
Water treatment procedure of the present utility model is such:
Open into water variable valve 2, the city planting ductwork tap water enters former water pot 3 through city planting ductwork water inlet pipe 1, the water that comes out from former water pot 3 is through the laggard sandfiltration pot 6 that flocculates in a subtle way of force (forcing) pump 4 pressurizations, flocculant concentration device 5 adds flocculation agent and goes forward side by side into the micro flocculating filter jar then, in filtering layer, finish a series of processes that the flocs unit particulate forms, collides, grows up and holds back, quartz sand thickness of filter bed in little flocculation sandfiltration pot 6 is 800mm, particle diameter 0.8~1.2mm, and flocculation agent adopts polymerize aluminum chloride.Little flocculation sand filtration purifies water outlet and enters ozone reaction jar 8, adds ozone by ozonizer 7 to ozone reaction jar 8, can make that organism small portion organism is oxidized into final product CO fully in the water 2And H 2O, all the other most of oxidized being decomposed into are beneficial to the better simply small organic molecule intermediate product of charcoal absorption molecular structure.The ozone dosage is 3~5mg/L, and the ozonization time is 12min, and carbon leaching material is the cocoanut active charcoal of high adsorption capacity, and the thick 1000mm of filtering layer, particle diameter of filter medium are 0.8~1.2mm, and filtering velocity is 6.5m/h.The water that comes out from ozone reaction jar 8 enters activated carbon filtration jar 9.Enter nanofiltration membrane component 14,15 and filter through sand filtration, the pretreated water of ozone and activated carbon.Before the nanofiltration water inlet security personnel's filter core 13 that the aperture is 5 μ m is set, can prevents that the broken end of gac from entering the nanofiltration assembly and causing the physical abuse of nanofiltration membrane.For reaching the purpose of producing high-quality, healthy drinking water, nano-filtration unit is selected the ESNA2 nanofiltration membrane of U.S.'s Hydranautics production that the rejection to organics rate is higher and ratio of desalinization is lower for use.Discharge through pipeline 39, under meter 16, pipeline 17 from nanofiltration membrane component 14 effusive purifying waste water; The concentrated solution of nanofiltration membrane component 14 enters nanofiltration membrane component 15 and after nanofiltration membrane purifies, purifies waste water and discharge through pipeline 41, under meter 16, pipeline 17 through pipeline 40; Nanofiltration membrane component 15 partial concentration liquid are through pipeline 42, under meter 18, pipeline 19 dischargings, and all the other are before pipeline 43 is back to nanofiltration force (forcing) pump 12, and quantity of reflux can be by 20 controls of the variable valve on the pipeline 43.Scale inhibitors solution tank 10 adds sulfuric acid or poly-sodium hexametaphosphate solution can effectively prevent the fouling that the calcium magnesium hardness on nanofiltration membrane surface forms as Scale inhibitors to nanofiltration membrane water inlet in operational process, in the operation week end of term of nanofiltration membrane flux decline 15%, device before the nanofiltration force (forcing) pump is out of service, enter nanofiltration membrane by configuration acid, alkali or other special-purpose chemicals in the chemical cleaning solution bucket 11 by the nanofiltration force (forcing) pump pollutent that adheres in face or the fenestra is carried out the cleaning of 30min, membrane flux is recovered.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Embodiment
Below in conjunction with specific embodiment the utility model is further elaborated.
Embodiment 1
With reference to accompanying drawing 1, a kind of nanofiltration membrane combined depth purifier, comprise by pipeline connecting former water pot 3, little flocculation sandfiltration pot 6, ozone reaction jar 8 and the activated carbon filtration jar 9 that connects according to this that activated carbon filtration jar 9 is connected with nanofiltration force (forcing) pump 12, security personnel's filter core 13 and nanofiltration membrane component 14,15 successively by pipeline.
Between activated carbon filtration jar 9 and nanofiltration force (forcing) pump 12, be connected to Scale inhibitors solution tank 10 and chemical cleaning solution bucket 11 by pipeline.
The city planting ductwork tap water at first enters former water pot 3 through pipeline 1, variable valve 2, enter little flocculation sandfiltration pot 6 through force (forcing) pump 4, pipeline 44, pipeline 22 then, flocculant concentration device 5 is to adding flocculant of polymeric aluminium chloride by pipeline 21, pipeline 22 in water simultaneously, in filtering layer, finish a series of micro flocculating filter processes that the flocs unit particulate forms, collides, grows up and holds back, quartz sand thickness of filter bed in little flocculation sandfiltration pot 6 is 800mm, particle diameter 0.8~1.2mm, flocculation agent adopts polymerize aluminum chloride.Water after little flocculation sand filtration enters ozone reaction jar 8 by pipeline 32,30, adds ozone by ozone generation, dosing system in the water inlet of ozone reaction jar 8; Ozone takes place, dosing system is made up of air compressor machine 23, gas-holder 24, instrument air dryer 25 and ozonizer 7, be connected by pipeline 26 between air compressor machine 23 and the gas-holder 24, be connected by pipeline 27 between gas-holder 24 and the instrument air dryer 25, be connected by pipeline 28 between instrument air dryer 25 and the ozonizer 7.Add ozone by pipeline 29, pipeline 30 by ozonizer 7 in the water inlet of ozone reaction jar 8, the ozone dosage can be regulated by valve 31.Can make by ozonization that organism small portion organism is oxidized into final product CO fully in the water 2And H 2O, all the other most of oxidized being decomposed into are beneficial to the better simply small organic molecule intermediate product of charcoal absorption molecular structure.The ozonize water outlet enters activated carbon filtration jar 9 through pipeline 33 and filters, carbon leaching material is the cocoanut active charcoal of high adsorption capacity, the thick 1000mm of filtering layer, particle diameter of filter medium is 0.8~1.2mm, filtering velocity is 6.5m/h, and a large amount of little pollution organism can be removed and guarantee the normal operation of follow-up nanofiltration membrane in activated carbon filtration water.The gac water outlet is finally through pipeline 34, pipeline 35, nanofiltration force (forcing) pump 12, pipeline 37, security personnel's filter core 13, pipeline 38 enters nanofiltration membrane component and filters, the water outlet of security personnel's filter core at first enters nanofiltration membrane component 14, purifying waste water after nanofiltration membrane component 14 filters through pipeline 39, under meter 16, pipeline 17 is discharged, concentrated solution enters nanofiltration membrane component 15 through pipeline 40 and filters, purify waste water through pipeline 41, under meter 16, pipeline 17 is discharged, partial concentration liquid is through pipeline 42, under meter 18, pipeline 19 is discharged, all the other concentrated solutions are before pipeline 43 is back to nanofiltration force (forcing) pump 12, valve 20 is set regulating the concentrated solution quantity of reflux on pipeline 43, the mode by the backflow concentrated solution increases the film surface velocity and pollutes to alleviate film.In addition, in the device operational process, add sulfuric acid or poly-sodium hexametaphosphate solution continuously to prevent the hardness fouling on nanofiltration membrane surface by pipeline 36, pipeline 35 to the import of nanofiltration force (forcing) pump by Scale inhibitors solution tank 10; In the operation week end of term of nanofiltration membrane flux decline 15%, device before the nanofiltration force (forcing) pump is out of service, enter nanofiltration membrane the pollutent that adheres in face or the fenestra is carried out the cleaning of 30min by pipeline 45, pipeline 35, nanofiltration force (forcing) pump 12, pipeline 37, security personnel's filter core 13, pipeline 38 by configuration acid, alkali or other special-purpose chemicals in the chemical cleaning solution bucket 11, membrane flux is recovered.By the final processing of nanofiltration membrane, can remove the residue small organic molecule that ozone, gac are difficult to remove, can keep in the water mineral substance such as part hardness simultaneously, purifications water outlet is the tap water of high-quality, health.

Claims (8)

1. nanofiltration membrane combined depth purifier, comprise the former water pot (3), little flocculation sandfiltration pot (6), ozone reaction jar (8) and the activated carbon filtration jar (9) that connect successively by pipeline, it is characterized in that activated carbon filtration jar (9) is connected with nanofiltration force (forcing) pump (12), security personnel's filter core (13) and nanofiltration membrane component (14), (15) successively by pipeline.
2. purifier according to claim 1 is characterized in that: be connected to Scale inhibitors solution tank (10) and chemical cleaning solution bucket (11) by pipeline between activated carbon filtration jar (9) and nanofiltration force (forcing) pump (12).
3. purifier according to claim 1 is characterized in that: described former water pot (3) is connected with little flocculation sandfiltration pot (6) by pipeline (44), force (forcing) pump (4).
4. purifier according to claim 1, it is characterized in that: the quartz sand thickness of filter bed in described little flocculation sandfiltration pot (6) is 800mm, particle diameter is 0.8~1.2mm, flocculation agent adopts polymerize aluminum chloride, add by flocculant concentration device (5), pipeline (21), pipeline (22), little flocculation sandfiltration pot (6) is connected with ozone reaction jar (8) by pipeline (32), pipeline (30).
5. purifier according to claim 1, it is characterized in that: described ozone reaction jar (8) ozone dosage is 3~5mg/L, the ozonization time is 12min, ozone takes place, dosing system is by air compressor machine (23), gas-holder (24), instrument air dryer (25) and ozonizer (7) are formed, be connected by pipeline (26) between air compressor machine (23) and the gas-holder (24), be connected by pipeline (27) between gas-holder (24) and the instrument air dryer (25), be connected by pipeline (28) between instrument air dryer (25) and the ozonizer (7), pass through pipeline (29) by ozonizer (7), (30) add ozone in the water inlet of ozone reaction jar (8), the ozone dosage can pass through valve (31) to be regulated.Ozone reaction jar (8) is connected with activated carbon filtration jar (9) by pipeline (33).
6. purifier according to claim 1 is characterized in that: carbon leaching material is a cocoanut active charcoal in the described activated carbon filtration jar (9), and the thick 1000mm of filtering layer, particle diameter of filter medium are 0.8~1.2mm, and filtering velocity is 6.5m/h.
7. purifier according to claim 1, it is characterized in that: described security personnel's filter core (13) is that the aperture is the microfiltration membrane of 5 μ m, security personnel's filter cores (13) are connected by pipeline (37) with nanofiltration force (forcing) pump (12), and security personnel's filter cores (13) are connected by pipeline (38) with nanofiltration membrane component (14).
8. purifier according to claim 1 is characterized in that: connect by pipeline (39), pipeline (40), pipeline (41) between described nanofiltration membrane component (14) and the nanofiltration membrane component (15).
CN 200520048116 2005-12-29 2005-12-29 Nano-filtering membrane composite deep water purification device Expired - Fee Related CN2848838Y (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781049A (en) * 2010-03-03 2010-07-21 北京桑德环境工程有限公司 System and method for treating water recycled from straw pulp papermaking wastewater
CN101838068A (en) * 2010-04-13 2010-09-22 南京化学试剂有限公司 Sewage recycling device
CN102897953A (en) * 2012-11-12 2013-01-30 中国海洋石油总公司 Integrated deep treatment method of polyformaldehyde wastewater
CN106587462A (en) * 2016-12-08 2017-04-26 苏州赛斯德工程设备有限公司 Treatment method for nanofiltration membrane central water purification system
CN107417022A (en) * 2017-05-22 2017-12-01 江苏汇方环境科技有限公司 A kind of EDTA crystalline mother solutions waste water treatment and reclamation technology
CN109399852A (en) * 2018-12-03 2019-03-01 中冶南方都市环保工程技术股份有限公司 A kind of contaminated soil thermal desorption wastewater zero discharge system and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781049A (en) * 2010-03-03 2010-07-21 北京桑德环境工程有限公司 System and method for treating water recycled from straw pulp papermaking wastewater
CN101781049B (en) * 2010-03-03 2012-01-25 北京桑德环境工程有限公司 System and method for treating water recycled from straw pulp papermaking wastewater
CN101838068A (en) * 2010-04-13 2010-09-22 南京化学试剂有限公司 Sewage recycling device
CN102897953A (en) * 2012-11-12 2013-01-30 中国海洋石油总公司 Integrated deep treatment method of polyformaldehyde wastewater
CN102897953B (en) * 2012-11-12 2013-08-28 中国海洋石油总公司 Integrated deep treatment method of polyformaldehyde wastewater
CN106587462A (en) * 2016-12-08 2017-04-26 苏州赛斯德工程设备有限公司 Treatment method for nanofiltration membrane central water purification system
CN107417022A (en) * 2017-05-22 2017-12-01 江苏汇方环境科技有限公司 A kind of EDTA crystalline mother solutions waste water treatment and reclamation technology
CN109399852A (en) * 2018-12-03 2019-03-01 中冶南方都市环保工程技术股份有限公司 A kind of contaminated soil thermal desorption wastewater zero discharge system and method

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