CN100469981C - Household quality separation water-supply method and apparatus - Google Patents

Household quality separation water-supply method and apparatus Download PDF

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CN100469981C
CN100469981C CNB2006100764491A CN200610076449A CN100469981C CN 100469981 C CN100469981 C CN 100469981C CN B2006100764491 A CNB2006100764491 A CN B2006100764491A CN 200610076449 A CN200610076449 A CN 200610076449A CN 100469981 C CN100469981 C CN 100469981C
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water
shunting
strainer
membrane
filter
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CN101063313A (en
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谈蓬会
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谈蓬会
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/152Water filtration

Abstract

The invention discloses a domestic split water supply method and its device, and it is a filter device of the domestic water supply. The filter is processed like this, the original water is filtered by the split tiny filter film, to generate clean water and washing water, part of the washing water are filtered by the stop type active carbon filter, to generate cleaner drinking water, the cleaner drinking water is filtered by the split tiny filter film, to generate eating water. The first level filter adopts the split filter, the surface of the filter is washed by the flowing water to greatly prolong the durability of the filter film. The durability of the filter film is prolonged means that the produce cost of the eating water and the washing water is decreased. The condensed water is sufficiently used by split water supply. The invention has a low cost, and the best water quality is applicable to the different use of the family, to realize the purifying and cleaning water process with zero discharge. The cleaning water washes the film surface, to realize the filter will not be blocked without secondary pollution.

Description

A kind of household quality separation water-supply method and device
Technical field
A kind of household quality separation water-supply method of the present invention and device are a kind ofly will to be separated into the method and apparatus of water purification, pure water and reclaimed water behind the tap water filter, are a kind of service water processing method and equipment.
Background technology
The modern life is more and more higher to the requirement of living water use, and people extremely pay attention to the quality of water in drinking-water, and the mouthfeel of water has also been proposed higher requirement.For the full-scope safeguards health prevents Epidemic's Spread and satisfies the beauty treatment needs, corresponding requirement has been proposed the content of material in the bath water.Therefore various water treatment facilities occur, common water has been removed impurity, made bath water or edible pure water.
A large amount of at present home-use pure water producing devices that use only are to use the coarse filter core of crossing of some activated carbon and PP cotton and so on usually, use is held back filtration method some impurity in the water is adsorbed and coarse filtration (being commonly called as preliminary treatment), carry out advanced treating through membrane separation technique then, be used for satisfying people's needs.But in preprocessing process, almost all adopt an import, an outlet, comparatively clean water flows out, and impurity is trapped in the simple filtration method (this paper is hereinafter referred to as holding back the formula strainer) of filter interior, caused and retained impurity in the strainer subsequent treatment is brought secondary pollution, the impurity that retains in the strainer makes filter interior produce dirty stifled phenomenon easily simultaneously, and the customer can only adopt frequent clean or change the normal use that filter core could guarantee filter plant.Waste water resource increases use cost so on the one hand, and the convenience of Shi Yonging is had a greatly reduced quality simultaneously.
Though in the rearmounted film separation process of normal domestic use pure water equipment, the method of carrying out simultaneously by the condensed water discharging and the discharging of purifying waste water can solve partly that impurity retains problem in the filter process, but it has brought a large amount of condensed water dischargings, the problem that the waste water resource phenomenon is serious again.Usually the condensed water discharging is 85:15 with the proportion of utilization of purifying waste water.This phenomenon is used water resource like this for the country that the such water resource of China is not enriched be that the utmost point should not occur.
Under this prerequisite, the someone has proposed the notion that pure water is made in so-called zero-emission, and few discharging of promptly trying one's best in the process of making pure water concentrates discharge water, or utilizes concentrated discharge water as much as possible.This notion is once the extensive approval that proposes promptly to be subjected to society.
But how to realize that this notion of zero-emission has different ways.It is the condensed water in the film separation process to be introduced the initial inlet of water treatment facilities that a kind of way is arranged, and carries out circular treatment.This way is at first in theory just unworkable.Because along with the increase of the system water yield, the water body impurity concentration improves rapidly in the machine, finally will block machine in a short period of time and quit work like this.Chinese patent 200410021696.2 (open day: on December 29th, 2004, publication number: 1558049A) proposed a kind of different water supply system, it is said to be used for family's quality classification water supply.The main inventive point that this invention is described is to be traditional purifier has been increased the temporary buffering of a condensed water adjusting device that is similar to water tank.But actual this system is difficult to realize in the family.Is one of its reason that wherein said buffering adjusting device should design much volumes under family's service condition? next is that its buffer holds condensed water inflow downstream use meeting downstream water quality is exerted an influence.Solve problem though also proposed to set up the way of aid in treatment in this invention to the downstream water quality impact, how about do impurity or condensed water solve in the processing procedure of Auxiliary Processing Unit? is Auxiliary Processing Unit itself the repetition of primary processing unit?
The employed filter of common quality classification water supply is such: at first by some simple filtering devices such as PP cotton, activated carbon, ion exchange resin etc. tap water is carried out bulk processing or claims preliminary treatment, it is better that guarantee enters the preceding water quality of high-precision treating apparatus (such as membrane separation device), reduce in the high Precision Processing process and pollute, ensure that the high Precision Processing service life of equipment prolongs.Even but under pretreatment condition, the key technology in the high Precision Processing device (such as membrane separation technique) still requires the condensed water and the discharging simultaneously of purifying waste water.Especially NF membrane and reverse osmosis membrane, because its fenestra is less, below the nanoscale, must a spot of discharge of purifying waste water in its course of work, have a large amount of condensed water flushing faces to discharge simultaneously, otherwise face is easy to pollute and obstruction produces not water outlet phenomenon (this paper is that the filter plant that other two kinds of fluids flow out simultaneously is the bypass filtration device to call in the following text this with a kind of fluid separation).So just produced in the preprocessing process impurity and held back easy obstruction and secondary pollution, a large amount of condensed water of discharging cause the serious phenomenon of serious water resource waste in the rearmounted film separation process.This water treatment compound mode has become a kind of set, the custom idea in a kind of people's brains.To have breakthrough aspect the family manufacture cleaning and heath water, must break this custom idea.
Summary of the invention
The purpose of this invention is to provide a kind of household quality separation water-supply method and device, described method is divided into drinkable water with domestic water, scouring water, cleaning water.The domestic water system is divided into drinkable water system, three systems of scouring water system and cleaning water system, supplies water respectively.Described device filters as former water with tap water, utilizing the bypass filtration device that tap water is carried out the first time separates, obtain scouring water and cleaning water, and from scouring water, tell the part current and utilize again and hold back higher bypass filtration device combination the carrying out deep processing of formula strainer and precision, obtain drinkable water (more the condensed water of high accuracy bypass filtration device incorporate the prime cleaning water into discharge together).Supply with drinkable water system, scouring water system and the cleaning water system of family respectively according to the different current qualities of separating (drinkable water, scouring water, cleaning water).Making full use of under the prerequisite of water resource, prolong the application life of filter as far as possible, reduced the maintenance and the replacing of filter core.
Basic principle of the present invention is shunting rather than simple filtration impurity trapped, mainly utilizes membrane separation technique to require to carry out respectively height, middle rank processing according to the different purposes of drinkable water, scouring water etc. in the household water.Utilize household cleaning water (greening etc. of flushing the toilet, mop floor, water flowers) flushing membrane surface, realize the filter membrane blowdown, keep the film cleaning surfaces.So both satisfy face condition of work requirement in the film separation process, and can avoid film separation process condensed water discharging waste water resource phenomenon again.Bring into use micro-filtration membrane (or milipore filter) to separate from the first order simultaneously, solved that existing family is pure, outlet of an import of purifier preprocessing process, comparatively clean water flows out, impurity retain in be easy to generate in the strainer dirty stifled and subsequent treatment produced secondary pollution problem.The present invention is by making the ingenious cooperation of two-stage membrane separation technique, the water inlet of this same quality of tap water is separated into product drinkable water of fine quality, the lower slightly three kinds of water of cleaning water of scouring water that quality is good and quality flow out, so just overcome that existing family is pure, purifier only pays attention to making the drinkable water of high-quality, discharge the living water use in contaminating impurity upstream or downstream, or impurity is retained in the dirty stifled and secondary pollution phenomenon of generation in the strainer.Its key character is that the current of three kinds of different qualities flow out simultaneously or alternately, utilize the household cleaning water to allow the characteristics of water quality a little less than the tap water standard, use cleaning water process flushing membrane surface, both satisfied the condition of work requirement of membrane material, the utilization rate of guaranteeing water resource again reaches 100%, realizes said zero-emission.
The objective of the invention is to reach like this: a kind of household quality separation water-supply method, described method is divided into three systems with domestic water: the cleaning water system, the scouring water system, the drinkable water system is characterized in that former water is filtered the step of supplying three system waters:
Former water flows into the shunting microporous filtration, and part water flushing micro-filtration membrane surface makes and do not retain the impurity non-secondary pollution in the strainer, produces the step of cleaning water;
Former water flows into the shunting microporous filtration, and part water passes the step that micro-filtration membrane produces scouring water;
Cleaning water flows out shunting microporous filtration, the step that enters the cleaning water system;
Scouring water flows out the shunting microporous filtration, and the part scouring water flows into the step of scouring water system;
Scouring water flows out the shunting microporous filtration, and the part scouring water enters the step of holding back type filter;
The part scouring water filters the step that produces than clean drinking water through holding back type filter;
Flow out the step of holding back type filter than clean drinking water;
Flow into shunting NF membrane strainer than clean drinking water, part water flushing NF membrane surface makes and does not retain the impurity non-secondary pollution in the strainer, produces the step of cleaning water;
Flow into shunting NF membrane strainer than clean drinking water, part water passes the step that NF membrane produces drinkable water;
Cleaning water flows out shunting NF membrane strainer, the step that enters the cleaning water system;
Drinkable water flows out shunting NF membrane strainer, the step that enters the drinkable water system.
Described shunting microporous filtration can replace with shunting ultrafiltration membrance filter device; Shunting NF membrane strainer can replace with shunting reverse osmosis membrane filt or shunting ultrafiltration membrance filter device.
A kind of household quality separation water-supply device comprises raw water inlet, it is characterized in that, also comprises: the cleaning water delivery port, and the scouring water delivery port, the drinkable water delivery port, the shunting microporous filtration is held back the formula strainer, shunting NF membrane strainer; Raw water inlet is connected with the water inlet of shunting microporous filtration, shunting microporous filtration face flushing water delivery port is connected with the cleaning water delivery port, the shunting microporous filtration filters out the mouth of a river and is connected with the water inlet of holding back the formula charcoal filter, the shunting microporous filtration filters out the mouth of a river and is connected with the scouring water delivery port, the delivery port of holding back the formula strainer is connected with the water inlet of shunting NF membrane strainer, the face flushing water delivery port of shunting NF membrane strainer is connected with the cleaning water delivery port, and the mouth of a river that filters out of shunting NF membrane strainer is connected with the drinkable water delivery port.
The shunting microporous filtration can replace with shunting ultrafiltration membrance filter device; Shunting NF membrane strainer can replace with shunting reverse osmosis membrane filt or shunting ultrafiltration membrance filter device; The filter membrane of the bypass type strainer of selected use comprises micro-filtration membrane, milipore filter, NF membrane, reverse osmosis membrane, and the big I of its fenestra is different as required, selects, adjusts.
The invention has the beneficial effects as follows: used the bypass filtration device because the first order is filtered, filter membrane surface often is subjected to washing away of circulating water, although be interrupted washing away, has also prolonged the application life of filter membrane greatly.The prolongation in filter membrane application life means the reduction of making the pure water cost.Owing to adopt the quality classification water supply of subsystem, make all concentrated discharge waters be fully used (by household cleaning water approach, as the greening etc. of flushing the toilet, mop floor, water flowers).Owing to adopt quality classification water supply, in time discharge and make the impurity that retains in the drinkable water process, make strainer not block, do not produce secondary pollution.Use of the present invention, with minimum cost, optimal water quality has realized the comprehensive quality classification water supply of family.Fully, reasonable use concentrated discharge water, realize that in this mini system of family zero-emission makes pure water.
Description of drawings
Fig. 1 is the theory diagram of the domestic water supply system that the present invention constituted;
Fig. 2 is a filter process principle schematic of the present invention;
Fig. 3 is the profile schematic diagram of household quality separation water-supply device;
Fig. 4 is the schematic internal view of household quality separation water-supply device.
The specific embodiment
Embodiment one:
Fig. 1 is for a kind of household quality separation water-supply method of the present invention and install the theory diagram of the domestic water supply system that is constituted.Among the figure: 1. tap water supply system, 2. the raw water inlet of household quality separation water-supply device, 3. household quality separation water-supply device, 4. the drinkable water delivery port of household quality separation water-supply device, 5. the scouring water delivery port of household quality separation water-supply device, 6. the cleaning water delivery port of household quality separation water-supply device, 7. eating at home water system, 8. family's scouring water system, 9. household cleaning water system.
General domestic water, three kinds of purposes nothing but: drinking water, wash dish, wash water fruit, wash up and all waters relevant such as cook with food; Wash one's face, have a bath, improve looks, wash clothes and wait the water of all and Body contact; Sanitation and hygiene water such as flush the toilet, wipe ground and water flowers.According to these purposes, present embodiment is divided into three little water systems with domestic water, as required, supplies the water of different qualities respectively, forms a kind of water system that designs according to the characteristics of household water.The purpose of segmentation domestic water is to find the method that rationally makes water.
The characteristics of household water are: aspect the consumption of water, the drinkable water consumption is less relatively, and bath water and cleaning water consumption are relatively large, and domestic water is an interrupted process of using in addition, and once used amount is little.Aspect the quality of water, the source of domestic water generally is tap water in the town, and the water source quality is better relatively, and impurity is few.But there is different requirements the domestic water aspect, and drinkable water requires to reach the standard of straight drink, requires can only contain few impurity or pure water in the water.Bath water is a kind of water purification, requires to hang down than drinkable water, for the health that guarantees human body also requires good quality.Cleaning water requires relatively low, reaches the reclaimed water standard and gets final product.Cleaning water allows to use the condensed water of being discharged in making drinkable water and scouring water process.According to these characteristics specialized designs one cover be applicable to the method for the filtration tap water that family uses, utilize removing contamination of producing in the process of filtered water, sewer and pilot process water, water output as different qualities, send into different water systems, make full use of, realized the zero-emission that pure water is made.The present invention has overcome that existing family is pure, impurity trapped is easy to generate dirty stifled and secondary pollution problem in the purifier filter process.Solve family and had problem pure, purifier condensed water discharging in use waste water resource now.Satisfied eating at home, washed usefulness, comprehensive needs such as cleaning water.
Fig. 2 is the filter process principle schematic of present embodiment.The sequence number representative is among the figure: 10. shunting microporous filtration water inlet, 11. shunting microporous filtration, 12. shunting microporous filtration face flushing water delivery port, 13. micro-filtration membrane, 14. the shunting microporous filtration filters out the mouth of a river, 15. hold back type filter, 16. hold back the delivery port of formula strainer, 17. the water inlet of shunting NF membrane strainer, 18. shunting NF membrane strainers, 19. shunting NF membrane strainer face flushing water delivery ports, 20. NF membrane, 21. shunting NF membrane strainer filters out the mouth of a river, 22. hold back the filter core of crossing of formula strainer, and 23. hold back formula strainer water inlet.
Present embodiment is few according to drinkable water consumption in the household water, the characteristics of interrupted use, break through first use and held back the traditional concept that the formula strainer re-uses the bypass filtration device, promptly broken through the notion of pre-treatment, post processing, but elder generation uses the microporous filtration of shunting, re-use and hold back the formula strainer, re-use the method for the NF membrane strainer of shunting, the water quality of domestic water is divided into cleaning water, bath water, drinkable water supplies respectively, make full use of water resource, reached complete zero-emission.The reason of doing like this is that the employed former water of family manufacture pure water is that the few water quality of tap water impurity is better, has cleaning water that shunting microporous filtration face is washed simultaneously, and micro-filtration membrane can be competent at the first order fully and be filtered.And common pretreatment unit can not be to crossing the filter core automated cleaning, and the impurity of being held back can produce dirty stifled and secondary pollution.But hold back the employed active carbon filtration core of formula strainer the effect that removes the middle peculiar smell that anhydrates is arranged, it is improper too to abandon use fully, so place it in after the shunting microporous filtration.Because the shutoff type strainer is placed on after the shunting microporous filtration, the more former water of its influent quality is well a lot, though the shutoff type strainer in the present embodiment does not have automated cleaning to cross the function of filter core yet, application life can be very long.The shutoff type strainer can use the various filter cores of crossing, and active carbon filtration core for example can also be crossed filter core or ion exchange resin be crossed filter core with PP is cotton, and two or more is crossed filter core and is used in combination.Present embodiment has used the active carbon filtration core, and adopts two kinds of active carbon filtration core strainers, and a kind of is that granule activated carbon is crossed filter core, and a kind of is block active carbon filtration core.
Filter process as shown in Figure 2 is: former water is flowed into by raw water inlet, the water inlet that enters the shunting microporous filtration by pipeline enters the shunting microporous filtration, part water is with big arrow A direction in scheming, the face of the micro-filtration membrane of flowing through, impurity on the face is taken up, flow to the cleaning water delivery port, flow out as cleaning water through the face flushing water delivery port of shunting microporous filtration, use for the household cleaning water system, this part water is the concentrated discharge water that cleans micro-filtration membrane.Part water press among the figure small arrow a direction through micro-filtration membrane, flow out from the mouth of a river that filters out of shunting microporous filtration, this part moisture is two parts, a part flows to the scouring water delivery port as scouring water, use for scouring water system of family, another part enters the intercept form strainer as further handling the water inlet of holding back the formula strainer with current direction.Water flows out from the delivery port of holding back the formula strainer, flows to the water inlet of shunting NF membrane strainer, enters shunting NF membrane strainer.Part water is with big arrow B direction in scheming, the face of the NF membrane of flowing through, impurity on the face is taken up, face flushing water delivery port through shunting NF membrane strainer flows to the cleaning water delivery port, flow out as cleaning water, use for the household cleaning water system, this part water is the concentrated discharge water that cleans NF membrane.Part water press among the figure small arrow b direction and is seen through NF membrane, from shunting NF membrane strainer filter out mouth of a river outflow, flow to the drinkable water delivery port, use for the eating at home water system.
The first order is filtered and at first used microporous filtration is the characteristics of having utilized family to supply water, family manufacture food, the employed former water of water are tap water, tap water quality is left home, and eat in the front yard, the requirement of water is not farly poor, usually reached certain neatness standard, can use the so meticulousr strainer of shunting microporous filtration to filter fully, and can not produce obstruction.The second level is used and is held back the type charcoal filter mainly in order to remove the chlorine taste in the tap water.The third level uses shunting NF membrane strainer all to filter all hazardous substancess in the water clean.
Present embodiment utilizes water supply volume is bigger in the family cleaning water as the water that keeps the face cleaning in the bypass type strainer, because this water supply volume is bigger, often washes away the filtration face, and face is kept clean, and prolongs the application life of filter membrane.It is generally acknowledged that bypass type strainer face current must keep constantly flowing, just can successively work and not produce filter membrane and stop up, and the impossible water continuously of household cleaning water, how to solve this contradiction? present embodiment has utilized the characteristics of domestic water: intermittently carry out because of family makes the process of water, use amount can be above 1 ton at most continuously for bath water, and tap water is under the situation at water source, be not enough to block face with micro-filtrate membrane filtration, cleaning water subsequently always someone will use, face must be washed, and does not influence follow-up use.The eating at home water consumption still less, each use amount continuously is definitely below 50 kilograms, tap water is through the preliminary treatment of micro-filtration membrane and activated carbon simultaneously, influent quality is better, does not influence the condensed water discharging of NF membrane just in use when cleaning water.When cleaning water did not use temporarily, a spot of drinkable water circulation like this was made and is unlikely to pollute face, and when cleaning water used, face was subjected to the flushing reduction.And household cleaning with water consumption much larger than the drinkable water consumption, though also be interrupted, the consumption of every day is enough to make and filters face and keep certain cleannes.
Embodiment two:
Other are all identical for present embodiment and embodiment one, and just to filter what use be shunting ultrafiltration membrance filter device to the first order.
Embodiment three:
Other are all identical for present embodiment and embodiment one, just the third level to filter what use be the shunting reverse osmosis membrane filt.
Embodiment four:
Present embodiment is a kind of concrete enforcement of household quality separation water-supply device:
Fig. 3, Fig. 4 are the profile schematic diagram and the schematic internal view of present embodiment household quality separation water-supply device.Among the figure: 24. shells, 25. buckets.This is the embedded quality classification water supply machines of a kind of family expenses, can be installed in below the operating desk in kitchen, and bucket wherein is to be used for storing the pure water of making.
The operating principle of present embodiment as shown in Figure 2, be to connect like this between each element in the present embodiment: raw water inlet is connected with the water inlet of shunting microporous filtration, can increase low tension switch, controlled water flow in case of necessity.Shunting microporous filtration face flushing water delivery port is connected with the cleaning water delivery port.The shunting microporous filtration filters out the mouth of a river, and by threeway, pipeline microporous filtration to be filtered out moisture be two parts, and a part is connected with the water inlet of holding back the formula strainer, and another part is connected with the scouring water delivery port.The delivery port of holding back the formula strainer is connected by pipeline with the water inlet of shunting NF membrane strainer, can increase booster pump and electromagnetic valve in case of necessity, the pressure of increase water and controlled water flow amount, the flow direction.The face flushing water delivery port of shunting NF membrane strainer is connected by pipeline with the cleaning water delivery port, can increase waste water in case of necessity than equipment such as (a kind of device of regulating the ratio of bypass filtration device flushing face water and filtered water), check (non-return) valves.The mouth of a river that filters out of shunting NF membrane strainer is connected with the drinkable water delivery port, can increase high pressure valve, controlled water flow in case of necessity.
The course of work of present embodiment is: former water is flowed into by raw water inlet, the water inlet that enters the shunting microporous filtration by pipeline enters the shunting microporous filtration, part water is with big arrow A direction in scheming, the face of the micro-filtration membrane of flowing through, impurity on the face is taken up, flow to the cleaning water delivery port, flow out as cleaning water through the face flushing water delivery port of shunting microporous filtration, supply with the household cleaning water system and use, this part water is the concentrated discharge water that cleans micro-filtration membrane.Part water press among the figure small arrow a direction through micro-filtration membrane, flow out from the mouth of a river that filters out of shunting microporous filtration, this part moisture is two parts, a part flows to the scouring water delivery port as bath water, supplying with scouring water system of family uses, another part enters and holds back the formula strainer as further handling the water inlet of holding back the formula strainer with current direction.The formula of the holding back strainer that uses in the present embodiment has used the strainer of two kinds of active carbon filtration cores of mutual series connection, and a kind of is the strainer that granule activated carbon is crossed filter core, and a kind of is the strainer of block active carbon filtration core.Water flows out from the delivery port of holding back the formula charcoal filter, flows to the water inlet (increasing booster pump and electromagnetic valve etc. in case of necessity) of shunting NF membrane strainer, enters shunting NF membrane strainer.Part water is with big arrow A direction in scheming, the face of the NF membrane of flowing through, impurity on the face is taken up, face flushing water delivery port through shunting NF membrane strainer flows to cleaning water delivery port (increasing waste water ratio and check (non-return) valve etc. in case of necessity), flow out as cleaning water, this part water is the concentrated discharge water that cleans NF membrane.Part water press among the figure small arrow a direction and is seen through NF membrane, flows out from the mouth of a river that filters out of shunting NF membrane strainer, and by pipeline flow-direction drinkable water delivery port (increasing high-voltage switch gear, tank and liquid control device etc. in case of necessity), the confession eating at home.
Fig. 3 is the profile schematic diagram of household quality separation water-supply device, and present embodiment has used a can drinkable water bucket, also is provided with the water pipe of output drinkable water simultaneously.Fig. 4 is the present embodiment schematic internal view, and pipeline wherein just schematically draws, and is actual more complex.For reducing volume, the increase water yield, 14 shunting microporous filtrations have been used in parallel connection in the present embodiment.The formula strainer of holding back has used the strainer of two kinds of active carbon filtration cores.A kind of filter core excessively is granular charcoal filter, and another kind of filter core excessively is block charcoal filter.Two kinds of charcoal filter series connection of holding back formula are used.Can also cross filter core with cotton filter core excessively of PP or ion exchange resin, and two or more above-mentioned filter core of crossing is used in combination.Used a shunting NF membrane strainer.Through such combination, using tap water to eat, wash usefulness, normal use such as Clean-as former water supply family life.All strainers generally can operate as normal more than 1 year, and renew cartridge has more reduced the cost of making pure water effectively.
Embodiment five:
Present embodiment and embodiment four are basic identical, and different is that the shunting microporous filtration is replaced by shunting ultrafiltration membrance filter device.
Embodiment six:
Present embodiment and embodiment four are basic identical, and different is that shunting NF membrane strainer is replaced by the shunting reverse osmosis membrane filt.
The meaning of mentioning former water in this manual is: the raw water of making pure water; Scouring water is a bath water such as wash one's face, have a bath; Cleaning water is the purposes waters such as greening that are used to flush the toilet, mop floor, water flowers; Cleaning drinking-water is a kind of process water in the filter process; Drinkable water is the water of directly drinking and cook etc.More than be a kind of explanation, not as definition.

Claims (8)

1. household quality separation water-supply method, described method is divided into three systems with domestic water: the cleaning water system, the scouring water system, the drinkable water system is characterized in that former water is filtered the step of three system waters of supply:
Former water flows into the shunting microporous filtration, and part water flushing micro-filtration membrane surface makes and do not retain the impurity non-secondary pollution in the strainer, produces the step of cleaning water;
Former water flows into the shunting microporous filtration, and part water passes the step that micro-filtration membrane produces scouring water;
Cleaning water flows out shunting microporous filtration, the step that enters the cleaning water system;
Scouring water flows out the shunting microporous filtration, and the part scouring water flows into the step of scouring water system;
Scouring water flows out the shunting microporous filtration, and the part scouring water enters the step of holding back type filter;
The part scouring water filters the step that produces than clean drinking water through holding back type filter;
Flow out the step of holding back type filter than clean drinking water;
Flow into shunting NF membrane strainer than clean drinking water, part water flushing NF membrane surface makes and does not retain the impurity non-secondary pollution in the strainer, produces the step of cleaning water;
Flow into shunting NF membrane strainer than clean drinking water, part water passes the step that NF membrane produces drinkable water;
Cleaning water flows out shunting NF membrane strainer, the step that enters the cleaning water system;
Drinkable water flows out shunting NF membrane strainer, the step that enters the drinkable water system.
2. a kind of household quality separation water-supply method according to claim 1 is characterized in that, described shunting microporous filtration can replace with shunting ultrafiltration membrance filter device.
3. a kind of household quality separation water-supply method according to claim 1 is characterized in that, described shunting NF membrane strainer can replace with shunting reverse osmosis membrane filt or shunting ultrafiltration membrance filter device.
4. a household quality separation water-supply device comprises raw water inlet, it is characterized in that, also comprises: the cleaning water delivery port, and the scouring water delivery port, the drinkable water delivery port, the shunting microporous filtration is held back the formula strainer, shunting NF membrane strainer; Raw water inlet is connected with the water inlet of shunting microporous filtration, shunting microporous filtration face flushing water delivery port is connected with the cleaning water delivery port, the shunting microporous filtration filters out the mouth of a river and is connected with the water inlet of holding back the formula strainer, the shunting microporous filtration filters out the mouth of a river and is connected with the scouring water delivery port, the delivery port of holding back the formula strainer is connected with the water inlet of shunting NF membrane strainer, the face flushing water delivery port of shunting NF membrane strainer is connected with the cleaning water delivery port, and the mouth of a river that filters out of shunting NF membrane strainer is connected with the drinkable water delivery port.
5. a kind of household quality separation water-supply device according to claim 4 is characterized in that, the shunting microporous filtration replaces with shunting ultrafiltration membrance filter device.
6 a kind of household quality separation water-supply devices according to claim 4 is characterized in that, shunting NF membrane strainer replaces with shunting reverse osmosis membrane filt or shunting ultrafiltration membrance filter device.
7. a kind of household quality separation water-supply device according to claim 4 is characterized in that the employed filtering material of holding back the formula strainer is activated carbon or PP cotton or ion exchange resin.
8. a kind of household quality separation water-supply device according to claim 4 is characterized in that the employed filtering material of holding back the formula strainer is the combination of activated carbon and two kinds of different filtering materials of ion exchange resin.
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