CN110963622A - Secondary water supply deep purification system with coupling quality-dividing function - Google Patents
Secondary water supply deep purification system with coupling quality-dividing function Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
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Abstract
The invention discloses a secondary water supply deep purification system with a coupling quality-dividing function, which comprises an underground water tank and is characterized in that: still include emergent water quality guarantee unit, quality of water promotes the unit, the user water supply pipeline, backflow water pipeline and straight drinking water pipeline, the water inlet and the municipal water pipeline of emergent water quality guarantee unit are connected, the delivery port of emergent water quality guarantee unit is connected with the front end of water tank, the rear end and the user water supply pipeline of water tank are connected, one side and the water inlet of quality of water promotion unit of water tank are connected, the dense water export of quality of water promotion unit is connected with the end of intaking of backflow water pipeline, the water outlet end of backflow water pipeline stretches into in the water tank, the pure water export of quality of water promotion unit is connected with the end of intaking of straight drinking water pipeline, the water outlet end and the outside mouth of directly drinking water of straight drinking water pipeline are connected, the: can combine together with municipal official gazette secondary water supply system, when getting rid of the secondary pollutant, realize that the district is divided the quality and supply water, satisfy demands such as the general water of user and high-quality straight drinking water.
Description
Technical Field
The invention relates to the field of secondary water supply, in particular to a secondary water supply deep purification system with a coupling quality-grading function.
Background
The safety guarantee of drinking water is closely related to the life health of people and the sustainable development of economic society, and is an important mark of the development level of modern cities and the quality of life of urban and rural residents. At present, tap water treated by a water plant can generally reach the national drinking water sanitary standard, but a huge underground pipe network system is like a large-scale reactor, and a lot of water quality problems mainly occur in the intermediate links between the water plant and the water faucet of each household. On one hand, the problems of aging and corrosion of pipeline materials, leakage of joint points of water pipes, falling of coatings on the inner wall of metal pipelines and the like are caused by substances which are main sources of secondary pollution, wherein the secondary pollutants of the municipal pipe network mainly comprise metal corrosion products, soluble organic matters, mud and sand suspended matters mixed into the pipe network and the like. On the other hand, when water supply equipment such as a water pump and a water tank is used for secondary water supply, the problem of pollution is easily caused due to poor management or untimely maintenance, and the safety of domestic water is affected.
The problem of contamination of secondary water supplies is widespread, recurrent and uncertain. Because the central urban area scope is continuously enlarged, the work load of old pipe transformation is big, the construction degree of difficulty is high, operations such as cutting off the water supply and takeover are big to the water supply system disturbance, consequently can't thoroughly clear up the underground water supply pipe network for the "secondary pollution" problem of running water in the transportation process does not fundamentally obtain solving, still has the gap between city running water quality of residence and people's life demand. Especially when the water supply network is stopped because of maintenance and cleaning, the disturbance to the secondary water supply system is increased, which can cause water quality pollution in a periodical or sudden water supply and seriously affect the water supply of regional users.
In addition, more and more high-grade districts and hotels provide convenience facilities of high-quality direct drinking water for residents and residents in public areas, so that the water source needs to be subjected to deep purification treatment. However, it is common that deep purification treatment equipment is installed in each household, and deep purification of high-quality direct drinking water can be rarely combined with a secondary water supply system, so that the existing water supply system easily causes waste of water resources and equipment, is high in management and maintenance cost, and cannot be uniformly managed.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the secondary water supply deep purification system with the coupling quality-grading function, which can be combined with a municipal official network secondary water supply system, can realize quality-grading water supply of cells while removing secondary pollutants, and meets the requirements of users on common water, high-quality direct drinking water and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a secondary water supply deep purification system with a coupling quality-grading function comprises a water tank arranged underground, an emergency water quality guarantee unit, a water quality improving unit, a user water supply pipeline, a return water pipeline and a direct drinking water pipeline, the water inlet of the emergency water quality guarantee unit is connected with a municipal water pipeline, the water outlet of the emergency water quality guarantee unit is connected with the front end of the water tank, the rear end of the water tank is connected with the user water supply pipeline, one side of the water tank is connected with the water inlet of the water quality improving unit, the concentrated water outlet of the water quality improving unit is connected with the water inlet end of the backflow water pipeline, the water outlet end of the backflow water pipeline extends into the water tank, the pure water outlet of the water quality lifting unit is connected with the water inlet end of the direct drinking water pipeline, and the water outlet end of the direct drinking water pipeline is connected with an external direct drinking port.
In some embodiments, the water quality improving unit comprises a UF membrane module, an RO membrane module, a first booster pump and a second booster pump, the direct drinking water pipeline comprises a high-quality water pipeline and a high-quality water pipeline, one side of the water tank is provided with a first opening, the first opening is connected with the water inlet of the UF membrane module through the first booster pump, the concentrated water outlet of the UF membrane module is connected with the water inlet end of the return water pipeline, the pure water outlet of the UF membrane module is respectively connected with the high-quality water pipeline and the water inlet of the RO membrane module, the second booster pump is arranged at the front end of the water inlet of the RO membrane assembly, the concentrated water outlet of the RO membrane assembly is connected with the water inlet end of the backflow water pipeline, and the pure water outlet of the RO membrane assembly is connected with the high-quality water pipeline. The pore size of UF (ultrafiltration) membrane is about 0.002-0.45 μm, and dissolved substances and substances smaller than the membrane pore size can permeate the membrane as permeate, and substances unable to permeate the membrane are slowly concentrated in concentrated water and refluxed, so that the produced water (permeate) contains water, ions and low molecular weight substances, and can be drunk as mineral water with good quality, and colloidal substances, particles, bacteria, viruses and protozoa can be filtered. The operating pressure of the RO (reverse osmosis) membrane is within the range of 1.0-10.5 MPa, ions or small molecular substances are intercepted by the membrane to form concentrated water which flows back to the water tank, and the filtered pure water can be used as high-quality water for drinking.
In some embodiments, the water purifying room further comprises a water purifying room arranged on the ground, wherein the water purifying room comprises a room body, a high-quality water outlet nozzle and a high-quality water outlet nozzle, the high-quality water outlet nozzle and the high-quality water outlet nozzle are arranged in the room body and are directly drunk by people, the high-quality water outlet nozzle is connected with the water outlet end of the high-quality water pipeline, and the high-quality water outlet nozzle is connected with the water outlet end of the high-quality water pipeline. Set up straight drink pipeline and water purification room and can make things convenient for the district resident to take at any time, also can manage directly drinking water and ordinary water respectively, for example take and collect certain expense to drinking water, provide the basis for the diversified water supply of high-end district or hotel.
In some embodiments, the emergency water quality assurance unit comprises a fiber filter, a water purification pipeline, a water supply bypass and a back flushing pipeline, wherein the municipal water pipeline is respectively connected with the water inlet end of the water supply bypass and the water inlet end of the fiber filter, the filtered outlet of the fiber filter is connected with the front end of the water tank through the water purification pipeline, the water outlet end of the water supply bypass is connected with the front end of the water tank, the water inlet end of the back flushing pipeline is connected with the water supply pipeline of a user, and the water outlet end of the back flushing pipeline is connected with the filtered outlet of the fiber filter. The emergency water quality guarantee unit adopts a full filtration mode to filter and purify municipal water entering the secondary water supply of the residential area, the fiber filter is arranged at the front end of the water tank, the water pressure of the municipal water is fully utilized, so that the water entering the residential area is purified by the fiber filter before being extracted, flows into the water tank and is finally sent into the household of each household through the booster pump. According to the pollution condition of the filter material of the fiber filter, the fiber filter can be back-flushed by utilizing the water pressure of the pipeline through the back flushing pipeline. Emergent water quality guarantee unit is when improving secondary water supply quality of water, is convenient for in time, swiftly wash fiber filter, in addition when wasing or when emergent emergency appears, can self-closing processing system, realizes the normal water supply of user through supplying water the bypass, does not influence and carries out normal secondary water supply to the user.
In some embodiments, the rear end of the water tank is provided with a second opening, the second opening is connected with the user water supply pipeline through a third booster pump, the water outlet end of the water purification pipeline, the first opening and the second opening are distributed on different side walls of the water tank, and the water outlet end of the backflow water pipeline extends into the water tank from the upper part of the water tank and is remotely arranged along a diagonal line with the second opening. Therefore, the device has a better structure, each unit can perform its own function, water paths are not mixed, and a dynamic and stable deep purification system is favorably formed.
The secondary water supply deep purification system with the coupling quality-dividing function comprises a water tank arranged underground, wherein a water inlet of the water tank is connected with a municipal water pipeline and further comprises a bypass flow filtering unit, a water quality lifting unit, a user water supply pipeline, a backflow water pipeline and a direct drinking water pipeline, one side of the water tank is connected with the water inlet of the bypass flow filtering unit, the rear end of the water tank is connected with the user water supply pipeline, a purified water outlet of the bypass flow filtering unit is respectively connected with a water inlet end of the backflow water pipeline and a water inlet of the water quality lifting unit, a concentrated water outlet of the water quality lifting unit is connected with a water inlet end of the backflow water pipeline, a water outlet end of the backflow water pipeline extends into the water tank, a purified water outlet of the water quality lifting unit is connected with a water inlet end of the direct drinking water pipeline, the water outlet end of the direct drinking water pipeline is connected with an external direct drinking port. By adopting the side flow filtering mode, the water body at the water taking end is always purified and refluxed water by utilizing the integral water body flow in the water tank, the water supply balance can be kept, and the cleaning strength and the occupied space of the water tank are effectively reduced.
In some embodiments, the water quality improving unit includes a UF membrane module, an RO membrane module, a first booster pump, and a second booster pump, the direct drinking water pipeline includes a high-quality water pipeline and a high-quality water pipeline, a purified water outlet of the side-flow filtering unit is connected to a water inlet of the UF membrane module through the first booster pump, a concentrated water outlet of the UF membrane module is connected to a water inlet of the return water pipeline, a purified water outlet of the UF membrane module is connected to the high-quality water pipeline and the water inlet of the RO membrane module, respectively, the second booster pump is disposed at a front end of the water inlet of the RO membrane module, the concentrated water outlet of the RO membrane module is connected to the water inlet of the return water pipeline, and the purified water outlet of the RO membrane module is connected to the high-quality water pipeline.
In some embodiments, the water purifying room further comprises a water purifying room arranged on the ground, wherein the water purifying room comprises a room body, a high-quality water outlet nozzle and a high-quality water outlet nozzle, the high-quality water outlet nozzle and the high-quality water outlet nozzle are arranged in the room body and are directly drunk by people, the high-quality water outlet nozzle is connected with the water outlet end of the high-quality water pipeline, and the high-quality water outlet nozzle is connected with the water outlet end of the high-quality water pipeline.
In some embodiments, the bypass flow filtering unit comprises a fiber filter, a water purification pipeline and a backwashing pipeline, wherein a first opening is formed in one side of the water tank, the first opening is connected with the water inlet end of the fiber filter through a fourth booster pump, the filtered outlet of the fiber filter is respectively connected with the water inlet end of the backflow pipeline and the water inlet of the UF membrane module through the water purification pipeline, the water inlet end of the backwashing pipeline is connected with the user water supply pipeline, and the water outlet end of the backwashing pipeline is connected with the filtered outlet of the fiber filter.
In some embodiments, the rear end of the water tank is provided with a second opening, the second opening is connected with the user water supply pipeline through a third booster pump, the water outlet end of the municipal water pipeline, the first opening and the second opening are distributed on different side walls of the water tank, and the water outlet end of the return water pipeline extends into the water tank from above the water tank and is close to the second opening. Therefore, the water flowing to the second water outlet and supplied to the user is high-quality backflow water, the water quality of the secondary water supply is less affected by water flow, and the water quality is more stable.
Compared with the prior art, the invention has the advantages that:
(1) the emergency water quality guarantee unit or the bypass flow filtering unit is arranged to filter secondary pollutants in secondary water supply in an early stage, so that the water supply safety of a user is guaranteed; underground filtering equipment does not need manual cleaning, the pressure of a secondary water supply pump is used for realizing back flushing, and normal water supply of a user is not influenced during cleaning or maintenance;
(2) the quality of water for the residential area is further improved by arranging a water quality improving unit, an ultrafiltration membrane or an RO reverse osmosis membrane adopts a cross-flow filtering mode, filtered concentrated water/salt water flows back to a water tank for further circulation, filtered pure water is output, and a water purifying room is arranged by combining the ground, so that people can conveniently drink the water directly; the concentrated water is collected, refluxed, diluted and recycled for the first stage, so that a large amount of concentrated water generated after filtration is utilized, and water resources are fully saved;
(3) the two are coupled to realize the quality-divided water supply of the residential area, one pipeline is used as common miscellaneous water and directly supplied to each family of the residential area through a booster pump, or can be specially used for cleaning, bathing and the like of the residential area or a hotel; the other pipeline supplies direct drinking water, so that people can conveniently and directly take the direct drinking water, the whole system is reasonable in line arrangement, the dual water supply of the whole district or hotel and other places can be realized, and the water quality improvement and the secondary water supply are combined, so that the water resource is saved, and the unified management and maintenance are convenient; pipeline system places in the underground, does not account for the space, can realize automated control, to sum up this secondary divides quality water supply system can greatly reduced economic cost, is fit for using widely.
Drawings
FIG. 1 is a flow chart of an embodiment of a secondary water supply deep purification system coupled with a quality-grading function according to the present invention;
FIG. 2 is a process flow diagram of an embodiment of a secondary water supply deep purification system coupled with a quality-based function according to the present invention;
FIG. 3 is a flow chart of another embodiment of the secondary water supply deep purification system with coupled quality separation function according to the present invention;
FIG. 4 is a process flow diagram of another embodiment of the secondary water supply deep purification system coupled with the dual function according to the present invention.
The emergency water quality guarantee system comprises a water tank 1, a first opening 11, a second opening 12, an emergency water quality guarantee unit 2, a fiber filter 21, a purified water pipeline 22, a water supply bypass 23, a backflushing pipeline 24, a water quality improving unit 3, a UF (ultra filtration) membrane assembly 31, an RO (reverse osmosis) membrane assembly 32, a first booster pump 33, a second booster pump 34, a user water supply pipeline 4, a third booster pump 41, a backflow water pipeline 5, a direct drinking water pipeline 6, a high-quality water pipeline 61, a high-quality water pipeline 62, a municipal water pipeline 7, a purified water room 8, a high-quality water outlet nozzle 81, a high-quality water outlet nozzle 82, a bypass flow filtering unit 9 and a fourth booster pump.
Detailed Description
The following detailed description will be made with reference to the drawings and examples, but not intended to limit the invention thereto.
Example one
As shown in fig. 1 and 2, a secondary water supply deep purification system with coupled quality-divided function comprises a water tank 1 arranged underground, an emergency water quality guarantee unit 2 and a water quality lifting unit 3, user water supply pipeline 4, backward flow water pipeline 5 and straight drinking water pipeline 6, the water inlet and the municipal water pipeline 7 of emergent water quality guarantee unit 2 are connected, the delivery port of emergent water quality guarantee unit 2 is connected with water tank 1's front end, water tank 1's rear end is connected with user water supply pipeline 4, one side of water tank 1 is connected with water quality hoisting unit 3's water inlet, water quality hoisting unit 3's dense water export is connected with the end of intaking of backward flow water pipeline 5, the outlet end of backward flow water pipeline 5 stretches into in the water tank 1, water quality hoisting unit 3's the pure water export is connected with the end of intaking of straight drinking water pipeline 6, the outlet end and the outside mouth of directly drinking water of straight drinking water pipeline 6 are connected.
Example two
The secondary water supply deep purification system coupled with the quality-divided function provided by the embodiment further defines the structure of the water quality improving unit 3 on the basis of the first embodiment. In this embodiment, the water quality improving unit 3 includes a UF membrane module 31, an RO membrane module 32, a first booster pump 33 and a second booster pump 34, the direct drinking water pipeline 6 includes a high-quality water pipeline 61 and a high-quality water pipeline 62, a first opening 11 is opened on one side of the water tank 1, the first opening 11 is connected to a water inlet of the UF membrane module 31 through the first booster pump 33, a concentrate outlet of the UF membrane module 31 is connected to a water inlet of the return water pipeline 5, a pure water outlet of the UF membrane module 31 is connected to water inlets of the high-quality water pipeline 61 and the RO membrane module 32, the second booster pump 34 is disposed at a front end of the water inlet of the RO membrane module 32, the concentrate outlet of the RO membrane module 32 is connected to the water inlet of the return water pipeline 5, and a pure water outlet of the RO membrane module 32. The pore size of UF (ultrafiltration) membrane is about 0.002-0.45 μm, and dissolved substances and substances smaller than the membrane pore size can permeate the membrane as permeate, and substances unable to permeate the membrane are slowly concentrated in concentrated water and refluxed, so that the produced water (permeate) contains water, ions and low molecular weight substances, and can be drunk as mineral water with good quality, and colloidal substances, particles, bacteria, viruses and protozoa are filtered. The operating pressure of the RO (reverse osmosis) membrane is within the range of 1.0-10.5 MPa, ions or small molecular substances are intercepted by the membrane to form concentrated water which flows back to the water tank, and the filtered pure water can be used as high-quality water for drinking.
EXAMPLE III
The secondary water supply deep purification system with the coupled quality-divided function provided by the embodiment further optimizes the structure of the secondary quality-divided water supply system on the basis of the second embodiment. In this embodiment, the water purifying room 8 is further included, the external direct drinking spout includes a high-quality water nozzle 81 and a high-quality water nozzle 82, the water purifying room 8 includes a room body, the high-quality water nozzle 81 and the high-quality water nozzle 82 for people to drink directly are disposed in the room body, the high-quality water nozzle 81 is connected to the water outlet end of the high-quality water pipeline 61, and the high-quality water nozzle 82 is connected to the water outlet end of the high-quality water pipeline 62.
Example four
The secondary water supply deep purification system with the coupled quality-dividing function provided by the embodiment is further defined for the structure of the emergency water quality protection unit 2 on the basis of the third embodiment. In this embodiment, emergency water quality guarantee unit 2 includes fiber filter 21, water purification pipeline 22, water supply bypass 23 and recoil pipeline 24, municipal water pipeline 7 is connected with the end of intaking of water supply bypass 23 and fiber filter 21 respectively, the outlet is connected with the front end of water tank 1 through water purification pipeline 22 after filtering of fiber filter 21, the play water end of water supply bypass 23 is connected with the front end of water tank 1, the end of intaking of recoil pipeline 24 is connected with user's water supply pipeline 4, the play water end of recoil pipeline 24 is connected with the outlet after filtering of fiber filter 21.
In this embodiment, the rear end of the water tank 1 is provided with a second opening 12, the second opening 12 is connected to the user water supply pipeline 4 through a third booster pump 41, the water outlet end of the purified water pipeline 22, the first opening 11 and the second opening 12 are distributed on different side walls of the water tank 1, and the water outlet end of the return water pipeline 5 extends into the water tank from above the water tank and is arranged in a diagonal line with the second opening 12 in a long distance.
The municipal water pipeline 7, the water inlet end of the fiber filter 21, the water purification pipeline 22, the water supply bypass 23, the backflushing pipeline 24, the user water supply pipeline 4, the backflow water pipeline 5, the water inlet end of the UF membrane module 31 and the water inlet end of the RO membrane module 32 are all provided with electromagnetic valves for controlling the on-off of the pipelines, the electromagnetic valves are connected with an external control system and used for realizing the full-automatic control of the underground, and the control mode adopts the conventional technology. In other embodiments, manual control may be used.
The ratio of the total flow rate of the return concentrated water of the UF membrane module 31 and the RO membrane module 32 (the flow rate in the return water pipeline 5) to the flow rate of the filtered water entering the water tank 1 (the flow rate in the purified water pipeline 22) is 1: 10000-1: 500. Therefore, the method has a better actual purification effect and is used for meeting the water intake demand of the water purification house community.
EXAMPLE five
The secondary water supply deep purification system with the coupling quality-dividing function provided by the embodiment is further defined for the structure of the emergency water quality protection unit 2 on the basis of the fourth embodiment. In this embodiment, the emergency water quality assurance unit 2 further includes an air compressor, an air outlet of the air compressor is connected to an air inlet of the fiber filter, and a cleaning water outlet of the fiber filter may be connected to an external service water pipeline. Through setting up air compressor, open air compressor and ventilate in the fiber filter during back flush, realize that gas, hydration are washed, can further improve the cleaning performance of fiber filter material.
Two or more groups of fiber filters 21 connected in parallel can be arranged according to the actual water quantity requirement of the residential area, so that the water treatment capacity of the secondary water supply system can be increased, and the actual water quantity requirement of each residential area can be met.
The clear water pipeline 22 is provided with a flow detection device for detecting the flow in the clear water pipeline, and the flow detection device is connected with the control system. The structure controls the opening and closing of the electromagnetic valve by detecting the low-level flow, thereby realizing the back flushing of the fiber filter, and can also realize the state switching by setting specific time according to different places and requirements.
In other embodiments, the municipal water line 7 is provided with a first pressure detector for measuring the water pressure, the clean water line 22 is provided with a second pressure detector for measuring the water pressure, and both the first pressure detector and the second pressure detector are connected to the control system. The back flushing time is determined by detecting the pressure difference change between the filtering inlet and the filtering outlet to judge whether the fiber filter is blocked, when the control system receives a signal of the increased pressure difference, the control system enters a back flushing state, and when the back flushing is finished, the pressure difference between the filtered water inlet and the filtered water outlet is restored to be within a normal range, and the system continues to work.
The filter material of the fiber filter 21 is polypropylene, polyester or synthetic fiber, the length is 100-150 cm, and the water filtration amount of the fiber filter 21 is 30-60 m3And/h, thereby having a more stable secondary water supply purification effect.
A UV ultraviolet lamp for sterilization is provided in the water tank 1 in an immersed state, whereby the stored water in the water tank can be further purified.
The invention relates to a secondary water supply deep purification system with coupled quality-dividing function, which has the working principle as follows: when normal operating condition, municipal water filters most secondary pollutants through the fiber filter in the emergent water quality guarantee unit, and the water purification that filters flows into large-volume water tank, supplies with each user after the pipeline pressure boost all the way. The other part of water in the water tank enters a water quality lifting unit, is deeply purified by an ultrafiltration membrane and a reverse osmosis membrane and then is supplied as direct drinking water of a community, and the discharged concentrated water flows back to the water tank. When the fiber filter needs to be cleaned, the water inlet end of the fiber filter is closed, the water supply bypass is opened, normal water supply of a user is not influenced during cleaning, then the backflushing pipeline is opened, and the fiber filter material is cleaned reversely by using water supply pressure.
EXAMPLE six
As shown in figures 3 and 4, a secondary water supply deep purification system with coupling and quality-grading functions, a water inlet of a water tank 1 is connected with a municipal water pipeline 7, the system further comprises a bypass filtering unit 9, a water quality improving unit 3, a user water supply pipeline 4, a backflow water pipeline 5 and a direct drinking water pipeline 6, one side of the water tank 1 is connected with the water inlet of the bypass filtering unit 9, the rear end of the water tank 1 is connected with the user water supply pipeline 4, a purified water outlet of the bypass filtering unit 9 is respectively connected with a water inlet end of the backflow water pipeline 5 and a water inlet of the water quality improving unit 3, a concentrated water outlet of the water quality improving unit 3 is connected with a water inlet end of the backflow water pipeline 5, a water outlet end of the backflow water pipeline 5 extends into the water tank 1, a purified water outlet of the water quality improving unit 3 is connected with a water inlet end of the direct drinking water pipeline 6, and a water outlet end of.
EXAMPLE seven
The secondary water supply deep purification system coupled with the quality-divided function provided by the embodiment further defines the structure of the water quality improving unit 3 on the basis of the first embodiment. In this embodiment, the water quality improving unit 3 includes a UF membrane module 31, an RO membrane module 32, a first booster pump 33 and a second booster pump 34, the direct drinking water pipeline 6 includes a high quality water pipeline 61 and a high quality water pipeline 62, a purified water outlet of the bypass filtering unit 9 is connected to a water inlet of the UF membrane module 31 through the first booster pump 33, a concentrated water outlet of the UF membrane module 31 is connected to a water inlet of the return water pipeline 5, a purified water outlet of the UF membrane module 31 is connected to water inlets of the high quality water pipeline 61 and the RO membrane module 32, the second booster pump 34 is disposed at a front end of the water inlet of the RO membrane module 32, the concentrated water outlet of the RO membrane module 32 is connected to the water inlet of the return water pipeline 5, and a purified water outlet of the RO membrane module 32 is connected to the.
Example eight
The secondary water supply deep purification system with the coupled quality-divided function provided by the embodiment further optimizes the structure of the secondary quality-divided water supply system on the basis of the seventh embodiment. In this embodiment, the water purifying room 8 is further included, the external direct drinking spout includes a high-quality water nozzle 81 and a high-quality water nozzle 82, the water purifying room 8 includes a room body, the high-quality water nozzle 81 and the high-quality water nozzle 82 for people to drink directly are disposed in the room body, the high-quality water nozzle 81 is connected to the water outlet end of the high-quality water pipeline 61, and the high-quality water nozzle 82 is connected to the water outlet end of the high-quality water pipeline 62.
Example nine
The secondary water supply deep purification system with the coupled quality-dividing function provided by the embodiment further defines the structure of the bypass flow filtering unit 9 on the basis of the eighth embodiment. In this embodiment, the bypass flow filtering unit 9 includes a fiber filter 21, a water purification pipeline 22 and a back flushing pipeline 24, a first opening 11 is provided at one side of the water tank 1, the first opening 11 is connected with the water inlet end of the fiber filter 21 through a fourth booster pump 91, the filtered outlet of the fiber filter 21 is connected with the water inlet end of the return water pipeline 5 and the water inlet of the UF membrane module 31 through the water purification pipeline 22, the water inlet end of the back flushing pipeline 24 is connected with the water supply pipeline 4 of the user, and the water outlet end of the back flushing pipeline 24 is connected with the filtered outlet of the fiber filter 21.
In this embodiment, the rear end of the water tank 1 is provided with a second opening 12, the second opening 12 is connected to the user water supply pipeline 4 through a third booster pump 41, the water outlet end of the municipal water pipeline 7, the first opening 11 and the second opening 12 are distributed on different side walls of the water tank 1, and the water outlet end of the return water pipeline 5 extends into the water tank 1 from above the water tank and is close to the second opening 12.
The municipal water pipeline 7, the water inlet end of the fiber filter 21, the water purification pipeline 22, the back flushing pipeline 24, the user water supply pipeline 4, the backflow water pipeline 5, the water inlet end of the UF membrane module 31 and the water inlet end of the RO membrane module 32 are all provided with electromagnetic valves for controlling the on-off of the pipelines, the electromagnetic valves are connected with an external control system and used for realizing the full-automatic control of the underground, and the control mode adopts the conventional technology. In other embodiments, manual control may be used.
The ratio of the total flow rate of the return concentrated water of the UF membrane module 31 and the RO membrane module 32 to the flow rate of the filtered water of the fiber filter 21 is 1: 10000 to 1: 500. The water intake demand of the water purifying house community is met.
Example ten
The present embodiment provides a secondary water supply deep purification system with coupled dual functions, which further defines the structure of the bypass flow filtration unit 9 on the basis of the ninth embodiment. In this embodiment, the bypass flow filtering unit 9 further includes an air compressor, an air outlet of the air compressor is connected to an air inlet of the fiber filter, and a cleaning water outlet of the fiber filter may be connected to an external service water pipe. Through setting up air compressor, open air compressor and ventilate in the fiber filter during back flush, realize that gas, hydration are washed, can further improve the cleaning performance of fiber filter material.
Two or more groups of fiber filters 21 connected in parallel can be arranged according to the actual water quantity requirement of the residential area, so that the water treatment capacity of the secondary water supply system can be increased, and the actual water quantity requirement of each residential area can be met.
Be provided with the first pressure detector that is used for surveing water pressure on the municipal water pipeline 7, be provided with the second pressure detector that is used for surveing water pressure on the clear water pipeline 22, first pressure detector and second pressure detector all are connected with control system. The back flushing time is determined by detecting the pressure difference change between the filtering inlet and the filtering outlet to judge whether the fiber filter is blocked, when the control system receives a signal of the increased pressure difference, the control system enters a back flushing state, and when the back flushing is finished, the pressure difference between the filtered water inlet and the filtered water outlet is restored to be within a normal range, and the system continues to work.
The filter material of the fiber filter 21 can be polypropylene, polyester or synthetic fiber, the length is 100-150 cm, and the water filtration amount of the fiber filter 21 is 30-60 m3And/h, thereby having a more stable secondary water supply purification effect.
A UV ultraviolet lamp for sterilization is provided in the water tank 1 in an immersed state, whereby the stored water in the water tank can be further purified.
The invention relates to a secondary water supply deep purification system with coupled quality-dividing function, which has the working principle as follows: when normal operating condition, municipal water gets into district underground water tank, most of storage water pass through the fiber filter in the sidestream filter unit, filter secondary pollutant, filter the water purification partly backward flow and flow into big volume water tank, supply with each user after the pressure boost of rear end pipeline, filter another part of water purification and get into quality of water lift unit, supply with as the straight drinking water in district after ultrafiltration membrane, reverse osmosis membrane deep purification, and discharged dense water, salt solution etc. then filter the back with fiber filter and water purification together flow back to the water tank in. When the fiber filter needs to be cleaned, the water inlet end of the bypass flow filtering unit is closed, then the backflushing pipeline is opened, the fiber filter material is cleaned reversely by using the water supply pressure, and the normal secondary water supply of a user is not influenced.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereby, and the present invention may be modified in materials and structures, or replaced with technical equivalents, in the constructions of the above-mentioned various components. Therefore, structural equivalents made by using the description and drawings of the present invention or by directly or indirectly applying to other related arts are also encompassed within the scope of the present invention.
Claims (10)
1. A secondary water supply deep purification system with coupling quality-dividing function comprises a water tank arranged underground, it is characterized by also comprising an emergency water quality guarantee unit, a water quality lifting unit, a user water supply pipeline, a return water pipeline and a direct drinking water pipeline, the water inlet of the emergency water quality guarantee unit is connected with a municipal water pipeline, the water outlet of the emergency water quality guarantee unit is connected with the front end of the water tank, the rear end of the water tank is connected with the user water supply pipeline, one side of the water tank is connected with the water inlet of the water quality improving unit, the concentrated water outlet of the water quality improving unit is connected with the water inlet end of the backflow water pipeline, the water outlet end of the backflow water pipeline extends into the water tank, the pure water outlet of the water quality lifting unit is connected with the water inlet end of the direct drinking water pipeline, and the water outlet end of the direct drinking water pipeline is connected with an external direct drinking port.
2. The system of claim 1, wherein the water quality improving unit comprises a UF membrane module, a RO membrane module, a first booster pump, and a second booster pump, the direct drinking water pipeline comprises a high quality water pipeline and a high quality water pipeline, a first opening is opened on one side of the water tank, the first opening is connected with the water inlet of the UF membrane module through the first booster pump, the concentrate outlet of the UF membrane module is connected with the water inlet of the return water pipeline, the pure water outlet of the UF membrane module is respectively connected with the high quality water pipeline and the water inlet of the RO membrane module, the second booster pump is arranged at the front end of the water inlet of the RO membrane module, the concentrate outlet of the RO membrane module is connected with the water inlet of the return water pipeline, and a pure water outlet of the RO membrane module is connected with the high-quality water pipeline.
3. The system of claim 2, further comprising a clean water room disposed on the ground, wherein the clean water room comprises a room body, a high quality water nozzle and a high quality water nozzle disposed in the room body for people to drink directly, the high quality water nozzle is connected to the water outlet end of the high quality water pipe, and the high quality water nozzle is connected to the water outlet end of the high quality water pipe.
4. The secondary water supply deep purification system with the coupling quality-grading function according to claim 3, characterized in that the emergency water quality guarantee unit comprises a fiber filter, a water purification pipeline, a water supply bypass and a backflushing pipeline, the municipal water pipeline is respectively connected with the water inlet end of the water supply bypass and the water inlet end of the fiber filter, the filtered outlet of the fiber filter is connected with the front end of the water tank through the water purification pipeline, the water outlet end of the water supply bypass is connected with the front end of the water tank, the water inlet end of the backflushing pipeline is connected with the user water supply pipeline, and the water outlet end of the backflushing pipeline is connected with the filtered outlet of the fiber filter.
5. The deep purification system of claim 4, wherein a second opening is formed in the rear end of the water tank, the second opening is connected with the user water supply pipeline through a third booster pump, the water outlet end of the water purification pipeline, the first opening and the second opening are distributed on different side walls of the water tank, and the water outlet end of the return water pipeline extends into the water tank from the upper part of the water tank and is arranged in a diagonal distance with the second opening.
6. The secondary water supply deep purification system with the coupling quality-dividing function comprises a water tank arranged underground, wherein a water inlet of the water tank is connected with a municipal water pipeline, and the secondary water supply deep purification system is characterized by further comprising a bypass filtering unit, a water quality lifting unit, a user water supply pipeline, a backflow water pipeline and a direct drinking water pipeline, one side of the water tank is connected with the water inlet of the bypass filtering unit, the rear end of the water tank is connected with the user water supply pipeline, a purified water outlet of the bypass filtering unit is respectively connected with a water inlet end of the backflow water pipeline and a water inlet of the water quality lifting unit, a concentrated water outlet of the water quality lifting unit is connected with a water inlet end of the backflow water pipeline, a water outlet end of the backflow water pipeline extends into the water tank, a pure water outlet of the water quality lifting unit is connected with a water inlet end of the direct drinking water pipeline, the water outlet end of the direct drinking water pipeline is connected with an external direct drinking port.
7. The system of claim 6, wherein the secondary water supply deep purification system is coupled with a quality-divided function, it is characterized in that the water quality improving unit comprises a UF membrane component, an RO membrane component, a first booster pump and a second booster pump, the direct drinking water pipeline comprises a high-quality water pipeline and a high-quality water pipeline, a water purification outlet of the side-flow filtering unit is connected with a water inlet of the UF membrane module through the first booster pump, the concentrated water outlet of the UF membrane module is connected with the water inlet end of the return water pipeline, the pure water outlet of the UF membrane module is respectively connected with the high-quality water pipeline and the water inlet of the RO membrane module, the second booster pump is arranged at the front end of the water inlet of the RO membrane assembly, the concentrated water outlet of the RO membrane assembly is connected with the water inlet end of the backflow water pipeline, and the pure water outlet of the RO membrane assembly is connected with the high-quality water pipeline.
8. The system of claim 7, further comprising a clean water room disposed on the ground, wherein the clean water room comprises a room body, a high quality water nozzle and a high quality water nozzle disposed in the room body for people to drink directly, the high quality water nozzle is connected to the water outlet end of the high quality water pipe, and the high quality water nozzle is connected to the water outlet end of the high quality water pipe.
9. The system of claim 8, wherein the bypass filtration unit comprises a fiber filter, a water purification pipeline and a back flushing pipeline, a first opening is formed in one side of the water tank, the first opening is connected with the water inlet end of the fiber filter through a fourth booster pump, the filtered outlet of the fiber filter is respectively connected with the water inlet end of the backflow pipeline and the water inlet of the UF membrane module through the water purification pipeline, the water inlet end of the back flushing pipeline is connected with the user water supply pipeline, and the water outlet end of the back flushing pipeline is connected with the filtered outlet of the fiber filter.
10. The system of claim 9, wherein a second opening is formed in the rear end of the water tank, the second opening is connected to the user water supply pipeline through a third booster pump, the water outlet end of the municipal water pipeline, the first opening and the second opening are distributed on different side walls of the water tank, and the water outlet end of the return water pipeline extends into the water tank from above the water tank and is close to the second opening.
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Cited By (1)
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