CN104591451A - Tap water purification system - Google Patents

Tap water purification system Download PDF

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Publication number
CN104591451A
CN104591451A CN201410816547.9A CN201410816547A CN104591451A CN 104591451 A CN104591451 A CN 104591451A CN 201410816547 A CN201410816547 A CN 201410816547A CN 104591451 A CN104591451 A CN 104591451A
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water
water tank
sand
filter
tank
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CN104591451B (en
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王波
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Binhai Qunan Water Supply Co Ltd
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Jiangsu Shuizhile Automation Equipment Co Ltd
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Abstract

The invention provides a tap water purification system. The system comprises an ozone zone sterilizer, a raw water tank, a raw water pressurization pump, an air-lift type sand filter, an iron and manganese removal filter, an activated carbon filter, a water softener, a cartridge filter, a photo-catalytic reactor, ultrafiltration equipment, nanofiltration equipment and a sterile water storage tank which are sequentially connected with one another by virtue of pipelines, wherein a countercurrent forming device and a water tank filtering net are arranged inside the raw water tank; the countercurrent forming device comprises two upper and lower funnel-shaped parts; a water flow channel is formed in the middle of the bottom of the upper funnel-shaped part; the bottom of the lower funnel-shaped part is sealed; the water tank filtering net is positioned below the countercurrent forming device, so that the raw water tank is divided into an upper chamber and a lower chamber; and a pH control device is arranged in the raw water tank. The water quality of the treated tap water can reach and can be higher than the new edition standard of domestic drinking water sanitary standard (GB5749-2006).

Description

A kind of tap water purifying treatment system
Technical field
The present invention relates to a kind of tap water purifying treatment system, belong to water-treatment technology field.
Background technology
Tap water refers to the water for people's life, production and application meeting respective standard by producing after water treatment plants purification, sterilization.Domestic water draws rivers and lakes and underground water mainly through the water intake pumping station of water factory, surface water, by waterworks according to " national Drinking Water related sanitary standard ", through the process of the technical process such as precipitation, sterilization, filtration, be transported to each user finally by Energy Saving Measures of Pumping Station.
The life of tap water and people is closely bound up, the water quality of tap water and the health of people in close relations.The water quality standard of China also has a certain distance than international standard at present.Current water supply security is faced with the dual-pressure that the day by day serious and water quality standard of tap water of pollution of waterhead improves gradually, and this also just has higher requirement to advanced water treatment technology.
Traditional water technology mainly takes following technique: extract water source → coagulation → precipitation → filtration → feeding clean water basin and to carry out disinfection → input water supply line.But the pollution of water resources is day by day serious at present, especially heavy metal contamination and Organic pollutants, and according to statistics, earth surface water source about 50% water source of China is polluted, and hundreds of organic compound, heavy metal ion enter water source; There is the phenomenons that exceed standard such as fluorine, arsenic, iron, manganese in underground water source.And the current most waterworks of China still uses traditional water technology, if water source by heavy metal ion and organic compound pollute, so above-mentioned traditional technology just seems unable to do what one wishes.Therefore, be necessary to carry out advanced treatment to water supply.
Although source quality pollutes constantly aggravation, along with the raising of living standards of the people, the quality of tap water is had higher requirement.Come into effect " drinking water sanitary standard " (GB5749-2006) on July 1st, 2007, in new standard, water-quality guideline is increased to 106 by 35 of standard in 1985 for this reason, and the limit value of a lot of index is stricter.New standard emphasis strengthens the control overflow to microorganism, heavy metal and organic pollutant, and basic and international organization and developed country water quality standard integrates with.
Therefore, further guarantee, in order to the healthy and social development of people, be necessary, research and develop a kind of novel tap water purifying treatment system, this system can carry out advanced treatment by tap water supply, makes the water quality after processing reach the new standard of national regulation.
Summary of the invention
Goal of the invention: the object of the invention is to solve the deficiencies in the prior art, provides a kind of tap water purifying treatment system.
Technical scheme: in order to realize above object, present invention employs following technical scheme:
A kind of tap water purifying treatment system, it comprises successively by ozone sterilizer that pipeline connects, former water tank, former water force (forcing) pump, gas stripping type sand-bed filter, iron-manganese removing filter, activated charcoal filter, water softener, cartridge filter, photo catalysis reactor, ultrafiltration apparatus, nanofiltration equipment and aseptic water tank, described former water tank inside is provided with adverse current forming apparatus and filter screen of water tank, described adverse current forming apparatus comprises on two, lower two funnel shaped parts, water stream channel is provided with in the middle of the bottom of described upper hopper shape parts, described lower funnel-shaped part sealed bottom, described filter screen of water tank is positioned at the below of described adverse current forming apparatus, described former water tank is divided into, lower two chambers, the bottom of described former water tank is provided with water outlet, water tank UV sterilizer is provided with near described water outlet, described former water tank is provided with pH control device.
The ozone sterilizer be provided with in the present invention can carry out preliminarily pasteurized germicidal treatment to water source, and before ozone sterilizer is placed on follow-up flocculation sediment, can oxidized metal species, improve coagulation and filtration effect, replace chlorination in the past, reduce the toxic side effect of chlorine, also serve the effect of sterilization simultaneously, Organic substance in water can be oxidized, reduce subsequent disposal difficulty, reduce the effect of pollutent;
The subgravity that the former water force (forcing) pump be provided with mainly realizes former water promotes, and to realize the run by gravity of subsequent treatment process, alleviates the pressure of subsequent processing device;
Be provided with gas stripping type sand-bed filter, gas stripping type sand-bed filter is a kind of high efficiency filter treatment unit collecting coagulation, clarify, be filtered into one, gas stripping type sand-bed filter is for the flocculation sediment filtration treatment device of routine, have to filter and run continuously, without the need to shutting down back flushing, the advantages such as efficiency is high, and energy consumption is low, cost-saving;
The iron-manganese removing filter be provided with can except unnecessary ferro element and manganese element in anhydrating, although ferrimanganic has irreplaceable effect in the activity of sustaining life, but for human body, the intake of ferro element every day is only 20 mg, and the content of manganese only has 10 ~ 20 mg in human body, for so micro-ferrimanganic demand, the mankind can be made up by diet completely, in order to suppress high-iron and high manganese too to absorb generation human body being produced to potential hazard, then can remove unnecessary ferro element and manganese element by iron-manganese removing filter;
The activated charcoal filter be provided with can make full use of the adsorption of gac, can carry out chemisorption to the material of various character, the object to reach optimizing water quality such as peculiar smell, organism, colloid, chlorine residue in removing water body;
The water softener be provided with can remove scale, incrustation scale and some inorganic salt etc. in former water, to reduce water hardness;
The cartridge filter be provided with is a kind of accurate filter, in pre-treatment program, compare coarse filtration, and cartridge filter can remove the less impurity of some particles in former water further;
The photo catalysis reactor be provided with, utilizes the principle of light-catalyzed reaction, carries out disinfection to tap water, enough to remove thoroughly, sterilization, suppression virus activity and non-secondary pollution, processing cost is relatively low;
The ultrafiltration apparatus be provided with mainly is provided with to adapt to new water quality standard, water treating equipment in the past can remove some organism in water and impurity, but in new standard, to organism, heavy metal, microorganism, even there is strict requirement to turbidity etc., therefore, need to use more superior accommodation, and ultrafiltration can be applied in water treatment because having the advantage of following uniqueness: (1) ultrafiltration is a kind of green Physical Separation Technology, and its separating mechanism mainly sieves and diffusion.Even if do not add coagulating agent, also effectively can remove the suspended substance in former water and colloidalmaterial, delivery turbidity is down to 0. 1 below NTU.Therefore ultrafiltration less with even not using coagulating agent, thus can reduce coagulated agent to the pollution of water quality.(2) ultra-filtration technique effectively can remove almost all pathogenic microorganisms, comprise Cryptosporidium, giardia lamblia, bacterium and virus etc., effluent quality generally can reach the requirement of water quality standard to microbiological indicator, therefore there is no need in principle to carry out sterilization and disinfection to water outlet again.Certainly, also need to add a small amount of sterilizing agent in water, to keep certain continuous disinfection ability, in order to avoid water is subject to secondary pollution in transmission & distribution process.(3) ultrafiltration can retain the material that relative molecular mass scope is 500 ~ 106, and in natural water, organic molecular weight major part is also in this scope, and therefore ultrafiltration can remove the organism in former water more effectively.Consumption simultaneously owing to adopting ultra-filtration technique can reduce sterilizing agent, therefore significantly can reduce the growing amount of disinfection byproduct (DBP) in water, thus improve the chemical safety of water.(4) in the filtration of routine, pollutent is by being adsorbed on filter material surface and removed, is a kind of stochastic process, therefore has fluctuation.Compared with conventional processes, it is directly screen out effect by fenestra that the process of water pollutant is removed in ultrafiltration, therefore has fabulous stability to the removal of pollutent.(5) working pressure that ultrafiltration adopts usually is 0. 1 ~ 0. 4 MPa, and be less than the working pressure of nanofiltration membrane, energy consumption is relatively low.(6) water is very short by the filtration time of ultra-filtration membrane, and this makes the volume of device for ultrafiltration membrane very little, this be other conventional treatment processes far can not and.(7) application scale and processing power can change in the larger context, and equipment can realize suitability for industrialized production and Automated condtrol, day-to-day operation and maintenance management more convenient.
The nanofiltration equipment be provided with is mainly in order to make up the some shortcomings part of ultrafiltration apparatus, it is similar that it acts on reverse osmosis membrane, especially play decolouring, removal natural organic matter and synthesis of organic substance (as agricultural chemicals etc.), three and cause material, disinfection byproduct (DBP) (haloform and halogen acetic acid) and precursor thereof and volatile organic matter, ensure the effect of the biologically stable of tap water etc., with ultrafiltration apparatus with the use of, tap water that can be sufficient carries out advanced treatment;
Use aseptic water tank to carry out water storage, the sterilized water processed can be avoided to be polluted in storage;
The adverse current forming apparatus be provided with in former water tank it mainly play dash, cross water, bidirectional flow is formed and the effect of current blending, finally reach the object of the inner water body pressure of regulating tank, stationary flow flow, the sedimentable matter in roof tank water quality can be made fully to precipitate simultaneously, make filter effect better, thus the detergent power of water tank is strengthened; The filtering net be provided with tentatively can filter water, water tank UV sterilizer can in and ozone residual in water tank, play germicidal action simultaneously;
The pH control device be provided with in former water tank, can control the pH value of tap water in water tank, for subsequent disposal and water quality safety provide guarantee.
Described gas stripping type sand-bed filter comprises main body, the bottom of described main body is provided with sand-bed filter inlet mouth, top is provided with sand-washing device, the sand extraction tube vertically arranged is provided with between described sand-bed filter inlet mouth and sand-washing device, the left and right of described sand extraction tube is provided with water distributor, the left and right sides, top of described main body is respectively equipped with sand-bed filter water-in and sand-bed filter water outlet, and described sand-bed filter water-in is connected with described water distributor, and the middle and lower part of described main body is filled with layer of sand.This apparatus structure is simple, floor space is little, and efficient mistake can filter impurity in water.
Described photo catalysis reactor comprises photocatalyst reaction vessel and tripping device, the bottom of described catalytic reaction cell and tripping device is all respectively equipped with evacuation port, water pump is provided with between described two evacuation ports, described photocatalyst reaction vessel inside is provided with silica tube, described silica tube inside is provided with ultraviolet lamp, described photocatalyst reaction vessel top is provided with water-in and water outlet, the top of described tripping device is provided with water-in and water outlet, back-water gauge is provided with between the water outlet of described photocatalyst reaction vessel and the water-in of tripping device, the water outlet of described tripping device is provided with qualified water under meter and tensimeter, photocatalyst is equipped with in described photocatalyst reaction vessel inside, described photocatalyst comprises following components by weight percent:
Methyl acrylate: 100 parts;
Nano titanium oxide: 6-7 part;
Poly(lactic acid): 10-15 part; Safety non-toxic, has good biocompatibility, joins in nano titanium oxide and can increase its germ resistance;
Chitosan: 6-8 part; Environment-friendly type antibiotic agent, can increase overall bactericidal properties;
Cellulose acetate: 5-7 part; Increase photocatalysis characteristic and the bactericidal properties of nano titanium oxide;
Epoxypropyltrimethylchloride chloride: 10-15 part; Quaternary ammonium salt, both can react with nano titanium oxide, strengthened photocatalysis characteristic, can, as phase transfer reagent, the entirety of solution be mixed more even again;
Deionized water: 200-300 part.In this device, photocatalyst is placed in reaction vessel and mixes with pending tap water, instead of photocatalyst is attached on concrete device, compared to other reaction unit, reaction unit of the present invention both ensure that the high-level efficiency of photochemical catalytic oxidation, achieved again effectively being separated of photocatalyst granular and water.And in photochemical catalysis reagent, entering nano titanium oxide with other reagent mixes, and takes full advantage of the characteristic of each component, makes the reaction bacteria-eliminating efficacy of this photocatalyst better.
The ultra-filtration membrane that described ultrafiltration apparatus adopts to be aperture the be polytetrafluoroethylhollow hollow fiber membrane of 0.1-0.12 μm.The advantages such as tubular fibre is compared to other forms of film, and its bacteria-eliminating efficacy is better, and to have ph stability performance good for poly tetrafluoroethylene simultaneously, high temperature resistant, compared to other mould materials, be longer service life some.
The nanofiltration membrane that described nanofiltration equipment adopts is the hollow fiber nanofiltration membrane of membrane pore size 1.2-2.0 μm.
The top of described former water tank is respectively equipped with water tank inlet, liquid level controller for water tank and water tank inflation exhaust and filtration apparatus, the shower nozzle that at least two levels are installed is provided with below the inner tank water-in of described former water tank, described adverse current forming apparatus is provided with below described shower nozzle, the below of described adverse current forming apparatus is provided with described filter screen of water tank, and the bottom of described former water tank is also provided with water tank sewage draining exit.Shower nozzle makes the tap water that enters more even through adverse current forming apparatus again, makes adverse current forming apparatus better effects if, and then makes filter effect better, finally makes the better effects if that purifies water.Liquid level controller for water tank controls liquid level, is convenient to charge and discharge water at any time, exhaust and filtration apparatus, ensures inner air environmental quality.
Described pH control device comprises pH sensor, hydrochloric acid charging box, sodium hydroxide addition case and PLC.PH sensor carries out pH detection to the water in water tank, by the bearing reaction that records in PLC, PLC calculates, if water quality meta-acid, just open sodium hydroxide addition case and add sodium hydroxide solution in water tank, if water quality meta-alkali, just open hydrochloric acid charging box, add hydrochloric acid to regulate, till its pH value of the water quality in water tank meets the requirements.
Described former water tank (2) inside is provided with corrosion-resistant coating, and the material of described corrosion-resistant coating comprises following components by weight percent:
FEEK:100 part;
FEP:20-25 part;
Carbon fiber: 10-15 part;
Nano-silicon nitride: 2-4 part;
Polynite: 2-4 part;
Glass fibre: 3-5 part;
Paraffin: 1-2 part;
Coupling agent: 0.5-0.8 part;
Softening agent: 6-8 part;
Stablizer: 2-3 part.In water quality in water tank, impurity is more, and the ozone sterilization residue of residual previous step, and also can carry out the measures such as pH regulator in water tank, like this, unavoidably to the long-living corrosion of water tank, therefore, the corrosion-resistant coating be provided with can protect water tank, avoids corrosion, extends the work-ing life of water tank;
Corrosion-resistant coating, wherein, FEEK: polyether-ether-ketone, it is a kind of material of environment-protecting asepsis, in the severe rugged environments such as high temperature, burn into steam and soda acid, still show high temperature resistant, self-lubricating, wear-resistant, the advantage such as high strength and high-dimensional stability, its continuous use temperature up to 260 DEG C, even if excellent mechanical strength still can be kept under the high temperature of 300 DEG C, with it for material of main part, the erosion resistance of corrosion-resistant coating can be ensured; The FEP added: fluorinated ethylene propylene copolymer, is tetrafluoroethylene and R 1216 copolymerization, has splendid insulativity, chemical-resistant stability etc., after introducing PEP, can well improve toughness and the erosion resistance of product; With the addition of carbon fiber and nano-silicon nitride, mechanical property and the Corrosion Protection of FEEK material of main part can be strengthened further; The polynite added can improve the shock-resistance of product, snappiness, package stability and solidity to corrosion well; The glass fibre added is a kind of ceramic of excellent performance, and of a great variety, advantage is good insulating, thermotolerance is strong, erosion resistance good, and physical strength is high, after adding, can improve the erosion resistance of product; With the addition of the auxiliary agents such as paraffin, softening agent, stablizer, coupling agent, the over-all properties of corrosion-resistant coating product is improved, wherein softening agent can select dioctyl sebacate, stablizer can select calcium-zinc composite stabilizing agent and tetramethylolmethane composition by weight ratio to be the mixture of 1:2, and coupling agent can select vinyl three tert-butyl peroxide silane.
The inside of described aseptic water tank is provided with chitosan anti-bacteria layer, and outside is provided with PEF thermal insulation layer.What aseptic water tank stored is the clean tap water finally processed, and in order to avoid tap water standing storage meeting breed bacteria, be therefore provided with antibiotic layer, and chitosan is a kind of anti-biotic material of environment-protecting asepsis, can not produces secondary pollution; The thermal insulation layer be provided with can be incubated water tank.
Beneficial effect: tap water purifying treatment system provided by the invention compared with prior art, has the following advantages:
(1) tap water purifying treatment system of the present invention, combine the multiple disinfection way such as ozonization, disinfection by ultraviolet light, photocatalysis disinfection, sterilization bacteria-eliminating efficacy is better, membrane technique is combined with Ozone-Active Carbon Process simultaneously, the organism, heavy metal, microorganism etc. in former water can be processed fully, reach the advanced treatment to water quality, make to process rear water quality and can to reach and higher than the standard of new edition " drinking water sanitary standard " (GB5749-2006);
(2) tap water purifying treatment system of the present invention, adopts gas stripping type sand-bed filter to replace conventional flocculation sediment operation, while ensure that high efficiency filter, also reduces cost;
(3) tap water purifying treatment system of the present invention, photocatalyst is placed in reaction vessel and mixes with pending tap water by the photocatalysis apparatus adopted, instead of photocatalyst is attached on concrete device, compared to other reaction unit, reaction unit of the present invention both ensure that the high-level efficiency of photochemical catalytic oxidation, achieved again effectively being separated of photocatalyst granular and water; And in photochemical catalysis reagent, nano titanium oxide is mixed with other reagent, take full advantage of the characteristic of each component, make the reaction bacteria-eliminating efficacy of this photocatalyst better;
(4) tap water purifying treatment system of the present invention, former water tank inside is provided with the corrosion-resistant coating of environment-friendly type, and can avoid the corrosion of water tank, final water tank, its inside is provided with antibiotic layer, and when can be avoided the storage of water quality, breed bacteria produces secondary pollution.
Accompanying drawing explanation
The structural representation of the tap water purifying treatment system that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of embodiment of the present invention Central Plains water tank;
Fig. 3 is the structural representation of photo catalysis reactor in the embodiment of the present invention;
Fig. 4 is the structural representation of gas stripping type sand-bed filter in the embodiment of the present invention;
In figure: 1-ozone sterilizer, the former water tank of 2-, the former water force (forcing) pump of 3-, 4-gas stripping type sand-bed filter, 5-iron-manganese removing filter, 6-activated charcoal filter, 7-water softener, 8-cartridge filter, 9-photo catalysis reactor, 10-ultrafiltration apparatus, 11-nanofiltration equipment, the aseptic water tank of 12-, 21-water tank inlet, 22-high water tank housing, 23-water tank inflation exhaust and filtration apparatus, 24-shower nozzle, 25-adverse current forming apparatus, 26-filter screen of water tank, 27-water outlet of water tank, 28, water tank UV sterilizer, 29-water tank sewage draining exit, 210-pH control device, 41-sand-washing device, 42-sand-bed filter sewage draining exit, 43-sand-bed filter water outlet, 44-layer of sand, 45-sand-bed filter inlet mouth, 46-sand extraction tube, 47-water distributor, 48-sand-bed filter water-in, 91-back-water gauge, 92-qualified water under meter, 93-tensimeter, 94-tripping device, 95-water pump, 96-photocatalyst reaction vessel, 97-ultraviolet lamp, 98-silica tube.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail; but illustrate that protection scope of the present invention is not limited to the concrete scope of the present embodiment simultaneously; based on the embodiment in the present invention; those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
embodiment 1
As Figure 1-4: a kind of tap water purifying treatment system, it is characterized in that: it comprises the ozone sterilizer 1 connected by pipeline successively, former water tank 2, former water force (forcing) pump 3, gas stripping type sand-bed filter 4, iron-manganese removing filter 5, activated charcoal filter 6, water softener 7, cartridge filter 8, photo catalysis reactor 9, ultrafiltration apparatus 10, nanofiltration equipment 11 and aseptic water tank 12, described former water tank 2 inside is provided with adverse current forming apparatus 25 and filter screen of water tank 26, described adverse current forming apparatus 25 comprises on two, lower two funnel shaped parts, water stream channel is provided with in the middle of the bottom of described upper hopper shape parts, described lower funnel-shaped part sealed bottom, described filter screen of water tank 26 is positioned at the below of described adverse current forming apparatus 25, described former water tank 2 is divided into, lower two chambers, the bottom of described former water tank 2 is provided with water outlet 27, water tank UV sterilizer 28 is provided with near described water outlet 27, described former water tank 2 is provided with pH control device 210, described pH control device 210 comprises pH sensor, hydrochloric acid charging box, sodium hydroxide addition case and PLC, the top of described former water tank 2 is respectively equipped with water tank inlet 21, liquid level controller for water tank 22 and water tank inflation exhaust and filtration apparatus 23, the shower nozzle 24 that at least two levels are installed is provided with below the inner tank water-in 21 of described former water tank 2, described adverse current forming apparatus 25 is provided with below described shower nozzle 24, the below of described adverse current forming apparatus 25 is provided with described filter screen of water tank 26, the bottom of described former water tank 2 is also provided with water tank sewage draining exit 29, described former water tank 2 inside is provided with corrosion-resistant coating, the material of described corrosion-resistant coating comprises following components by weight percent:
FEEK:100 part;
FEP:20 part;
Carbon fiber: 10 parts;
Nano-silicon nitride: 2 parts;
Polynite: 2 parts;
Glass fibre: 3 parts;
Paraffin: 1 part;
Coupling agent: vinyl three tert-butyl peroxide silane: 0.5 part;
Softening agent: dioctyl sebacate: 6 parts;
Stablizer: calcium-zinc composite stabilizing agent and tetramethylolmethane composition by weight ratio are the mixture of 1:2: 2 parts.
Described gas stripping type sand-bed filter 4 comprises main body, the bottom of described main body is provided with sand-bed filter inlet mouth 45, top is provided with sand-washing device 41, the sand extraction tube 46 vertically arranged is provided with between described sand-bed filter inlet mouth 45 and sand-washing device 41, the left and right of described sand extraction tube 46 is provided with water distributor 47, the left and right sides, top of described main body is respectively equipped with sand-bed filter water-in 48 and sand-bed filter water outlet 43, and described sand-bed filter water-in 48 is connected with described water distributor 47, and the middle and lower part of described main body is filled with layer of sand 44.
Described photo catalysis reactor 9 comprises photocatalyst reaction vessel 96 and tripping device 94, the bottom of described catalytic reaction cell 96 and tripping device 94 is all respectively equipped with evacuation port, water pump 95 is provided with between described two evacuation ports, described photocatalyst reaction vessel 96 inside is provided with silica tube 98, described silica tube 98 inside is provided with ultraviolet lamp 97, described photocatalyst reaction vessel 96 top is provided with water-in and water outlet, the top of described tripping device 94 is provided with water-in and water outlet, back-water gauge 91 is provided with between the water outlet of described photocatalyst reaction vessel 96 and the water-in of tripping device 94, the water outlet of described tripping device 94 is provided with qualified water under meter 92 and tensimeter 93, photocatalyst is equipped with in described photocatalyst reaction vessel 96 inside, described photocatalyst comprises following components by weight percent:
Methyl acrylate: 100 parts;
Nano titanium oxide: 6 parts;
Poly(lactic acid): 10 parts;
Chitosan: 6 parts;
Cellulose acetate: 5 parts;
Epoxypropyltrimethylchloride chloride: 10 parts;
Deionized water: 200 parts.
The ultra-filtration membrane that described ultrafiltration apparatus 10 adopts to be aperture the be polytetrafluoroethylhollow hollow fiber membrane of 0.1 μm.
The nanofiltration membrane that described nanofiltration equipment 11 adopts is the hollow fiber nanofiltration membrane of membrane pore size 1.2 μm.
The inside of described aseptic water tank 12 is provided with chitosan anti-bacteria layer, and outside is provided with PEF thermal insulation layer.
embodiment 2:
As Figure 1-4: a kind of tap water purifying treatment system, it comprises the ozone sterilizer 1 connected by pipeline successively, former water tank 2, former water force (forcing) pump 3, gas stripping type sand-bed filter 4, iron-manganese removing filter 5, activated charcoal filter 6, water softener 7, cartridge filter 8, photo catalysis reactor 9, well heater 10, Teflon filtration film 11 and aseptic water tank 12, described former water tank 2 inside is provided with adverse current forming apparatus 25 and filter screen of water tank 26, described adverse current forming apparatus 25 comprises on two, lower two funnel shaped parts, water stream channel is provided with in the middle of the bottom of described upper hopper shape parts, described lower funnel-shaped part sealed bottom, described filter screen of water tank 26 is positioned at the below of described adverse current forming apparatus 25, described former water tank 2 is divided into, lower two chambers, the bottom of described former water tank 2 is provided with water outlet 27, water tank UV sterilizer 28 is provided with near described water outlet 27, described former water tank 2 is provided with pH control device 210, described pH control device 210 comprises pH sensor, hydrochloric acid charging box, sodium hydroxide addition case and PLC, the top of described former water tank 2 is respectively equipped with water tank inlet 21, liquid level controller for water tank 22 and water tank inflation exhaust and filtration apparatus 23, the shower nozzle 24 that at least two levels are installed is provided with below the inner tank water-in 21 of described former water tank 2, described adverse current forming apparatus 25 is provided with below described shower nozzle 24, the below of described adverse current forming apparatus 25 is provided with described filter screen of water tank 26, the bottom of described former water tank 2 is also provided with water tank sewage draining exit 29, described former water tank 2 inside is provided with corrosion-resistant coating, the material of described corrosion-resistant coating comprises following components by weight percent:
FEEK:100 part;
FEP:23 part;
Carbon fiber: 13 parts;
Nano-silicon nitride: 3 parts;
Polynite: 3 parts;
Glass fibre: 4 parts;
Paraffin: 1.5 parts;
Coupling agent: vinyl three tert-butyl peroxide silane: 0.65 part;
Softening agent: dioctyl sebacate: 7 parts;
Stablizer: calcium-zinc composite stabilizing agent and tetramethylolmethane composition by weight ratio are the mixture of 1:2: 2.5 parts.
Described gas stripping type sand-bed filter 4 comprises main body, the bottom of described main body is provided with sand-bed filter inlet mouth 45, top is provided with sand-washing device 41, the sand extraction tube 46 vertically arranged is provided with between described sand-bed filter inlet mouth 45 and sand-washing device 41, the left and right of described sand extraction tube 46 is provided with water distributor 47, the left and right sides, top of described main body is respectively equipped with sand-bed filter water-in 48 and sand-bed filter water outlet 43, and described sand-bed filter water-in 48 is connected with described water distributor 47, and the middle and lower part of described main body is filled with layer of sand 44.
Described photo catalysis reactor 9 comprises photocatalyst reaction vessel 96 and tripping device 94, the bottom of described catalytic reaction cell 96 and tripping device 94 is all respectively equipped with evacuation port, water pump 95 is provided with between described two evacuation ports, described photocatalyst reaction vessel 96 inside is provided with silica tube 98, described silica tube 98 inside is provided with ultraviolet lamp 97, described photocatalyst reaction vessel 96 top is provided with water-in and water outlet, the top of described tripping device 94 is provided with water-in and water outlet, back-water gauge 91 is provided with between the water outlet of described photocatalyst reaction vessel 96 and the water-in of tripping device 94, the water outlet of described tripping device 94 is provided with qualified water under meter 92 and tensimeter 93, photocatalyst is equipped with in described photocatalyst reaction vessel 96 inside, described photocatalyst comprises following components by weight percent:
Methyl acrylate: 100 parts;
Nano titanium oxide: 6.5 parts;
Poly(lactic acid): 13 parts;
Chitosan: 7 parts;
Cellulose acetate: 6 parts;
Epoxypropyltrimethylchloride chloride: 13 parts;
Deionized water: 250 parts.
The ultra-filtration membrane that described ultrafiltration apparatus 10 adopts to be aperture the be polytetrafluoroethylhollow hollow fiber membrane of 0.7 μm.
The nanofiltration membrane that described nanofiltration equipment 11 adopts is the hollow fiber nanofiltration membrane of membrane pore size 1.6 μm.
The inside of described aseptic water tank 12 is provided with chitosan anti-bacteria layer, and outside is provided with PEF thermal insulation layer.
embodiment 3:
As Figure 1-4: a kind of tap water purifying treatment system, it comprises the ozone sterilizer 1 connected by pipeline successively, former water tank 2, former water force (forcing) pump 3, gas stripping type sand-bed filter 4, iron-manganese removing filter 5, activated charcoal filter 6, water softener 7, cartridge filter 8, photo catalysis reactor 9, well heater 10, Teflon filtration film 11 and aseptic water tank 12, described former water tank 2 inside is provided with adverse current forming apparatus 25 and filter screen of water tank 26, described adverse current forming apparatus 25 comprises on two, lower two funnel shaped parts, water stream channel is provided with in the middle of the bottom of described upper hopper shape parts, described lower funnel-shaped part sealed bottom, described filter screen of water tank 26 is positioned at the below of described adverse current forming apparatus 25, described former water tank 2 is divided into, lower two chambers, the bottom of described former water tank 2 is provided with water outlet 27, water tank UV sterilizer 28 is provided with near described water outlet 27, described former water tank 2 is provided with pH control device 210, described pH control device 210 comprises pH sensor, hydrochloric acid charging box, sodium hydroxide addition case and PLC, the top of described former water tank 2 is respectively equipped with water tank inlet 21, liquid level controller for water tank 22 and water tank inflation exhaust and filtration apparatus 23, the shower nozzle 24 that at least two levels are installed is provided with below the inner tank water-in 21 of described former water tank 2, described adverse current forming apparatus 25 is provided with below described shower nozzle 24, the below of described adverse current forming apparatus 25 is provided with described filter screen of water tank 26, the bottom of described former water tank 2 is also provided with water tank sewage draining exit 29, described former water tank 2 inside is provided with corrosion-resistant coating, the material of described corrosion-resistant coating comprises following components by weight percent:
FEEK:100 part;
FEP:25 part;
Carbon fiber: 15 parts;
Nano-silicon nitride: 4 parts;
Polynite: 4 parts;
Glass fibre: 5 parts;
Paraffin: 2 parts;
Coupling agent: vinyl three tert-butyl peroxide silane: 0.8 part;
Softening agent: dioctyl sebacate: 8 parts;
Stablizer: calcium-zinc composite stabilizing agent and tetramethylolmethane composition by weight ratio are the mixture of 1:2: 3 parts.
Described gas stripping type sand-bed filter 4 comprises main body, the bottom of described main body is provided with sand-bed filter inlet mouth 45, top is provided with sand-washing device 41, the sand extraction tube 46 vertically arranged is provided with between described sand-bed filter inlet mouth 45 and sand-washing device 41, the left and right of described sand extraction tube 46 is provided with water distributor 47, the left and right sides, top of described main body is respectively equipped with sand-bed filter water-in 48 and sand-bed filter water outlet 43, and described sand-bed filter water-in 48 is connected with described water distributor 47, and the middle and lower part of described main body is filled with layer of sand 44.
Described photo catalysis reactor 9 comprises photocatalyst reaction vessel 96 and tripping device 94, the bottom of described catalytic reaction cell 96 and tripping device 94 is all respectively equipped with evacuation port, water pump 95 is provided with between described two evacuation ports, described photocatalyst reaction vessel 96 inside is provided with silica tube 98, described silica tube 98 inside is provided with ultraviolet lamp 97, described photocatalyst reaction vessel 96 top is provided with water-in and water outlet, the top of described tripping device 94 is provided with water-in and water outlet, back-water gauge 91 is provided with between the water outlet of described photocatalyst reaction vessel 96 and the water-in of tripping device 94, the water outlet of described tripping device 94 is provided with qualified water under meter 92 and tensimeter 93, photocatalyst is equipped with in described photocatalyst reaction vessel 96 inside, described photocatalyst comprises following components by weight percent:
Methyl acrylate: 100 parts;
Nano titanium oxide: 7 parts;
Poly(lactic acid): 15 parts;
Chitosan: 8 parts;
Cellulose acetate: 7 parts;
Epoxypropyltrimethylchloride chloride: 15 parts;
Deionized water: 300 parts.
The ultra-filtration membrane that described ultrafiltration apparatus 10 adopts to be aperture the be polytetrafluoroethylhollow hollow fiber membrane of 0.12 μm.
The nanofiltration membrane that described nanofiltration equipment 11 adopts is the hollow fiber nanofiltration membrane of membrane pore size 2.0 μm.
The inside of described aseptic water tank 12 is provided with chitosan anti-bacteria layer, and outside is provided with PEF thermal insulation layer.
In above-described embodiment, tap water purifying treatment system of the present invention, its specific works operational process is as follows:
First former water carry out preliminary sterilization and disinfection process through ozone sterilizer 1; Then entering into former water tank 2, then carry out gravity by former water force (forcing) pump 3 and promote and enter into that gas stripping type sand-bed filter 4 carries out flocculating, precipitates, filtering integral process, gas stripping type sand-bed filter 4 can carry out preliminary coarse filtration to former water; Then former water enters into iron-manganese removing filter 5 to remove the unnecessary ferro element of water quality and manganese element; Then water quality enters into water softener 7 and carries out water demineralization, and the dirt in removing water quality, reduces the hardness of water quality; Then the water after softening enters into cartridge filter 8 and carries out essence filtration, further except the impurity in anhydrating; Then water enters into photo catalysis reactor 9 and carries out sterilization and disinfection by light-catalyzed reaction, tap water after disinfecting successively carries out film process by ultrafiltration apparatus 10 and nanofiltration equipment 11 again, finally to remove in water quality residual impurity, process and clean tap water after heat is finally stored in aseptic water tank 12 so that the water that divides carrying out next step operates.
Wherein, the flow direction of tap water in former water tank 2 is: current enter from water tank inlet 21, in the adverse current forming apparatus 25 of flows by action through inside of shower nozzle 24, current are flow through by the intermediate gaps of adverse current forming apparatus 25 upper-part and Bian Bi space, water body is divided into by entirety the current that the slower water yield of flow velocity is less, its object is to change the larger flow direction of middle part flow velocity, the stop being subject to lower component when flowing through region intermediate forms reverse flow, reverse flow and the violent blending of positive flow near limit wall, reach the effect of bidirectional flow energy dissipating, water flow pressure in former water tank 2 keeps stable, current filter through filter screen of water tank 26 after adverse current forming apparatus 25 again, finally flow out former water tank 2.In addition, tap water also can carry out pH regulator control by pH control device in former water tank 2, such as, if require that the pH value of water quality is retained in the desirable neutral state of 7() left and right, if the pH value that pH sensor records is too less than normal, i.e. water quality meta-acid, so just needs to control sodium hydroxide addition case by PLC and feeds in raw material, if pH value is too bigger than normal, i.e. water quality meta-alkali, so, just need to control hydrochloric acid charging box to feed in raw material, till the pH value of water quality reaches neutrality substantially.
Wherein, the filter process of tap water in gas stripping type sand-bed filter 4 is specially: first, water is delivered to bottom from sand-bed filter water-in 48 and is had the water distributor 47 of the radial bar shaped pore of circumference, water is with the quartz sand selecting particle diameter to be 1-2mm to upstream direction from layer of sand 44(, the thickness of layer of sand is generally about 800-850mm, the porosity of layer of sand is generally about 0.45-0.47) bottom slowly rise, the impurity of layer of sand 44 from bottom in filtered water, thus make bottom sand grains concentrate a large amount of impurity gradually, meanwhile, sand-bed filter inlet mouth 45 flows into the gas of constant flow (air feed air quantity is adjustable state, and regulation range is 0-2.8 m 3/ h)) sand grains bottom layer of sand 44 is raised, the sand grains of mentioning mixes tap water and rises to sand-washing device 41 from the sand extraction tube 46 of centre, in this process, sand grains fully contacts with water, due to the interaction of power between sand and water, create a large amount of bubble, solid particulate matter is wrapped up in attached by bubble, sand falls back to the top of layer of sand 44 from slit between sand-washing device 41 and sand-bed filter sewage draining exit 42 because of action of gravity, and owing to there is liquid level difference between sand-bed filter water outlet 43 and sand-bed filter sewage draining exit 42, make bubble, some water of solid particulate matter is discharged from sand-bed filter sewage draining exit 42, water after process flows out from sand-bed filter water outlet 43 and proceeds to next link, like this, the workflow of gas stripping type sand-bed filter one-period completes, periodically run with this.
Wherein, tap water reaction process in photo catalysis reactor 9 is: photocatalyst joins in photocatalyst reaction vessel 96 and mixes with pending tap water, then 95 are switched on the pump, water is circulated between photocatalyst reaction vessel 96 and tripping device 94, treat that photocatalyst reaches suspended state, open ultraviolet lamp 97, under the irradiation of ultraviolet lamp 97, light-catalyzed reaction starts, impurity in water is degraded, photocatalyst is by being trapped during tripping device 94, if the water after process is defective, always in the process that moves in circles between photocatalyst reaction vessel 96 and tripping device 94, until qualified, after process, qualified water then flows out from the water outlet of tripping device 94, this photo catalysis reactor 9 can ensure that the high-level efficiency of photochemical catalytic oxidation like this, achieve again effectively being separated of photocatalyst granular and water.
Through tap water purifying treatment system of the present invention, the tap water quality index after its process can reach the requirement of new standard " drinking water sanitary standard " (GB5749-2006) completely.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its objective is to allow and is familiar with these those skilled in the art and can understands content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalents done by spirit of the present invention or modification, all should be encompassed within protection scope of the present invention.

Claims (9)

1. a tap water purifying treatment system, is characterized in that: it comprises the ozone sterilizer (1) connected by pipeline successively, former water tank (2), former water force (forcing) pump (3), gas stripping type sand-bed filter (4), iron-manganese removing filter (5), activated charcoal filter (6), water softener (7), cartridge filter (8), photo catalysis reactor (9), ultrafiltration apparatus (10), nanofiltration equipment (11) and aseptic water tank (12), described former water tank (2) inside is provided with adverse current forming apparatus (25) and filter screen of water tank (26), and described adverse current forming apparatus (25) comprises on two, lower two funnel shaped parts, water stream channel is provided with in the middle of the bottom of described upper hopper shape parts, described lower funnel-shaped part sealed bottom, described filter screen of water tank (26) is positioned at the below of described adverse current forming apparatus (25), described former water tank (2) is divided into, lower two chambers, the bottom of described former water tank (2) is provided with water outlet (27), is provided with water tank UV sterilizer (28) near described water outlet (27), and described former water tank (2) is provided with pH control device (210).
2. tap water purifying treatment system according to claim 1, it is characterized in that: described gas stripping type sand-bed filter (4) comprises main body, the bottom of described main body is provided with sand-bed filter inlet mouth (45), top is provided with sand-washing device (41), the sand extraction tube (46) vertically arranged is provided with between described sand-bed filter inlet mouth (45) and sand-washing device (41), the left and right of described sand extraction tube (46) is provided with water distributor (47), the left and right sides, top of described main body is respectively equipped with sand-bed filter water-in (48) and sand-bed filter water outlet (43), described sand-bed filter water-in (48) is connected with described water distributor (47), the middle and lower part of described main body is filled with layer of sand (44).
3. tap water purifying treatment system according to claim 1, it is characterized in that: described photo catalysis reactor (9) comprises photocatalyst reaction vessel (96) and tripping device (94), the bottom of described catalytic reaction cell (96) and tripping device (94) is all respectively equipped with evacuation port, water pump (95) is provided with between described two evacuation ports, described photocatalyst reaction vessel (96) inside is provided with silica tube (98), described silica tube (98) inside is provided with ultraviolet lamp (97), described photocatalyst reaction vessel (96) top is provided with water-in and water outlet, the top of described tripping device (94) is provided with water-in and water outlet, back-water gauge (91) is provided with between the water outlet of described photocatalyst reaction vessel (96) and the water-in of tripping device (94), the water outlet of described tripping device (94) is provided with qualified water under meter (92) and tensimeter (93), photocatalyst is equipped with in described photocatalyst reaction vessel (96) inside, described photocatalyst comprises following components by weight percent:
Methyl acrylate: 100 parts;
Nano titanium oxide: 6-7 part;
Poly(lactic acid): 10-15 part;
Chitosan: 6-8 part;
Cellulose acetate: 5-7 part;
Epoxypropyltrimethylchloride chloride: 10-15 part;
Deionized water: 200-300 part.
4. the tap water sterilization system based on membrane technique according to claim 1, is characterized in that: the ultra-filtration membrane that described ultrafiltration apparatus (10) adopts to be aperture the be polytetrafluoroethylhollow hollow fiber membrane of 0.1-0.12 μm.
5. the tap water sterilization system based on membrane technique according to claim 1, is characterized in that: the nanofiltration membrane that described nanofiltration equipment (11) adopts is the hollow fiber nanofiltration membrane of membrane pore size 1.2-2.0 μm.
6. tap water purifying treatment system according to claim 1, it is characterized in that: the top of described former water tank (2) is respectively equipped with water tank inlet (21), liquid level controller for water tank (22) and water tank inflation exhaust and filtration apparatus (23), inner tank water-in (21) below of described former water tank (2) is provided with the shower nozzle (24) of at least two levels installations, described shower nozzle (24) below is provided with described adverse current forming apparatus (25), the below of described adverse current forming apparatus (25) is provided with described filter screen of water tank (26), the bottom of described former water tank (2) is also provided with water tank sewage draining exit (29).
7. the tap water purifying treatment system according to claim 1 or 6, is characterized in that: described pH control device (210) comprises pH sensor, hydrochloric acid charging box, sodium hydroxide addition case and PLC.
8. tap water purifying treatment system according to claim 7, is characterized in that: described former water tank (2) inside is provided with corrosion-resistant coating, and the material of described corrosion-resistant coating comprises following components by weight percent:
FEEK:100 part;
FEP:20-25 part;
Carbon fiber: 10-15 part;
Nano-silicon nitride: 2-4 part;
Polynite: 2-4 part;
Glass fibre: 3-5 part;
Paraffin: 1-2 part;
Coupling agent: 0.5-0.8 part;
Softening agent: 6-8 part;
Stablizer: 2-3 part.
9. tap water purifying treatment system according to claim 1, is characterized in that: the inside of described aseptic water tank (12) is provided with chitosan anti-bacteria layer, and outside is provided with PEF thermal insulation layer.
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