CN111139897A - Secondary water supply system with purification function and method - Google Patents
Secondary water supply system with purification function and method Download PDFInfo
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- CN111139897A CN111139897A CN202010061087.9A CN202010061087A CN111139897A CN 111139897 A CN111139897 A CN 111139897A CN 202010061087 A CN202010061087 A CN 202010061087A CN 111139897 A CN111139897 A CN 111139897A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
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Abstract
The invention discloses a secondary water supply system with a purification function and a method, wherein the secondary water supply system comprises a water tank body and a flow stabilizer, a municipal water pipeline is respectively connected with the water inlet ends of the water tank body and the flow stabilizer, and the secondary water supply system is characterized in that: this internal vertical two barricades that are equipped with of water tank, divide into the water intake pond with the water tank body, sedimentation tank and clean water basin, the water intake pond is adjacent with the sedimentation tank, separate by first barricade between, the bottom of first barricade is equipped with the inhalant canal of intercommunication water intake pond and sedimentation tank, separate by the second barricade between two ponds and the clean water basin, the top of second barricade is equipped with the overflow passageway of intercommunication sedimentation tank and clean water basin, be equipped with a plurality of sedimentation units in the sedimentation tank, municipal administration water pipeline is connected with the water intake pond, pipeline port department is equipped with the water intaking valve, be equipped with the liquid level detection mechanism who is used for switching water intaking valve switching in the clean water basin, the: the strengthened sedimentation and the side filtration are combined, so that the water purification efficiency is good, the cleaning is convenient, and the normal secondary water supply of residents is not influenced.
Description
Technical Field
The invention relates to the field of urban and rural secondary water supply, in particular to a secondary water supply system with a purification function and a method thereof.
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. Tap water treated by a water plant is conveyed to each household through a huge municipal pipeline system for secondary water supply, and nowadays more and more communities are provided with water tanks underground for storing tap water and then conveyed to households through a pressurizing pump. Generally, tap water treated by a water plant can meet the national drinking water sanitation 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 corrosion of pipeline materials of the underground pipe network system, leakage of joint points of water pipes, falling of coatings on the inner walls of metal pipelines and the like are brought about by substances which are main sources of 'secondary pollution', wherein municipal pipe network secondary pollutants 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 tank and a water pump 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.
And the pollution problem of the secondary water supply system has universality, multiplicity and uncertainty. 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.
In addition, when the secondary water supply tank is periodically maintained or cleaned, there are still some problems: on one hand, because the water tank is large in volume, the sediments accumulated for a long time are distributed on the inner walls of the water tank, so that the cleaning task of workers is heavy; on the other hand, when the water tank is cleaned, the secondary water supply for the residents is required to be suspended, and the water supply is resumed after the water tank is cleaned or maintained, so that the water consumption of the residents is greatly inconvenient, in addition, the disturbance of the secondary water supply system caused by the water cut-off maintenance is increased, the possibility of water quality pollution of the water supply in stages or in a sudden manner is caused, and the secondary water supply quality of regional users is also influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the secondary water supply system with the purification function and the method thereof, which can carry out enhanced precipitation and filtration on the secondary water supply and remove secondary pollutants, have high precipitation efficiency and good purification effect, and do not influence the normal secondary water supply of residents during cleaning.
The technical scheme adopted by the invention for solving the technical problems is as follows: a secondary water supply system with purification function comprises a water tank body and a flow stabilizer, wherein a municipal water pipeline is connected with the water inlet end of the water tank body through a first branch, the municipal water pipeline is connected with the water inlet end of the flow stabilizer through a second branch, two mutually perpendicular retaining walls are vertically arranged in the water tank body, the water tank body is divided into three areas communicated with an upper space, and sequentially comprises a water inlet pool, a sedimentation pool and a clean water pool according to the water flow direction, the water inlet pool is adjacent to the sedimentation pool and is separated by the first retaining wall, the bottom of the first retaining wall is provided with a water inlet channel communicated with the water inlet pool and the sedimentation pool, the two pools are separated from the clean water pool by a second retaining wall, the top of the second retaining wall is provided with an overflow channel communicated with the sedimentation pool and the clean water pool, the sedimentation tank is internally provided with a plurality of sedimentation units for blocking particles, the first branch is connected with the water inlet tank, one end of the first branch entering the water inlet tank is provided with a water inlet valve, the clean water tank is internally provided with a liquid level detection mechanism which is connected with the water inlet valve and used for switching the open-close state of the water inlet valve, the bottom end of the sedimentation tank is provided with a sewage discharge pipeline, the sewage discharge pipeline is provided with a sewage discharge valve, the rear side of the clean water tank is connected with a secondary water supply pipeline, the water outlet end of the flow stabilizing device is respectively connected with the flow stabilizing water supply pipeline and the secondary water supply pipeline through a back flush pipeline, the flow stabilizing water supply pipeline is provided with a water supply valve, the back flush pipeline is provided with a back flush valve, and the waste water port of the flow stabilizing device is connected with the water inlet tank through a waste water pipeline, and a waste water valve is arranged on the waste water pipeline.
In some embodiments, the water supply system further comprises a side filtering device, wherein a water inlet end of the side filtering device is connected with the secondary water supply pipeline or the clean water tank through a first pipeline, a water filtering outlet end of the side filtering device is connected with the clean water tank through a second pipeline, a backwashing water discharging end of the side filtering device is connected with the water inlet tank through a third pipeline, the first pipeline is provided with a first valve, the second pipeline is provided with a second valve, and the third pipeline is provided with a third valve; the side filter device is filled with any one or more of the following filter materials: hollow fiber, quartz sand, fiber balls, active carbon, an ultrafiltration membrane and a microfiltration membrane. By adding the side filtering device to the clean water tank, finer secondary pollutants are gradually transferred to the side filtering device to be intercepted, and the concentration of the secondary pollutants in household water can be gradually reduced along with continuous circulation of secondary water supply, so that the further purification effect is achieved; in addition, concentrated water discharged after the side filter device is subjected to back washing is converged into the water inlet pool to enter the next water circulation again, so that final pollutants can be discharged from a sewage discharge pipeline at the bottom of the sedimentation tank, and meanwhile, no water resource is wasted. According to the actual demand of the residents, the filter can be used for filtering in a mode of combining various filter materials and different filter materials, so that the water quality is improved.
In some embodiments, the first barricade the second barricade with the water tank body all adopt the same material, the second barricade including separate the intake chamber with the second barricade A section of clean water pond and separate the sedimentation tank with the second barricade B section of clean water pond, second barricade A section with first barricade height the same, the height of second barricade B section be less than the height of second barricade A section, the difference in height scope is at 50 ~ 150mm, the top of second barricade B section form overflow channel, the height of the bottom of first barricade be 25 ~ 100 cm. From this can guarantee that the liquid level height of intake pool, sedimentation tank and clean water basin reduces gradually, forms the liquid level difference, and under the normal water supply condition, water flows through these three ponds of intake pool, sedimentation tank and clean water basin in proper order under the action of gravity that the liquid level difference formed, realizes filtering, and the height of first barricade bottom can be in order to prevent blockking up and easy access.
In some embodiments, the sedimentation tank sequentially comprises a buffer layer, a deflection layer and a clarification layer from bottom to top, the buffer layer is communicated with the water inlet tank through the water inlet channel, the clarification layer is communicated with the clean water tank through the overflow channel, the sedimentation units are hollow inclined tubes, a plurality of inclined tubes are obliquely arranged on the deflection layer, two ends of each inclined tube are respectively communicated with the buffer layer and the clarification layer, the cross sections of the inclined tubes are regular hexagons, the adjacent inclined tubes are closely connected with each other and arranged in an array shape, the inclined tubes are inclined from top to bottom towards the direction far away from the first retaining wall, so that water flow sequentially passes through the buffer layer, the inclined tubes and the clarification layer from bottom to top in a reverse Z-shaped manner, and enters the clean water tank from the overflow channel in an overflow manner, the height ratio range of the buffer layer, the baffling layer and the clarification layer is (5-10) to (10) and (5-10), and the inclined angle of the inclined tube in the horizontal direction is 45-60 degrees. The water from the water inlet tank enters the sedimentation tank from the bottom of the first retaining wall, sequentially passes through the buffer layer, the baffling layer and the clarification layer from bottom to top, the purified water enters the clean water tank from the clarification layer in an overflow mode, and the impurities are blocked by the inner wall of the inclined tube of the baffling layer under the action of water flow and gravity and are accumulated at the bottom of the sedimentation tank; this spatial structure makes rivers change the flow direction many times, and impurity such as suspended particles is kept off under the inertia and is fallen and deposit on the lower half side inner wall of pipe chute, along the pipe chute deposit to sedimentation tank bottom or wash away by wasing water, has better precipitation effect to secondary pollutant such as suspended particles from this. The height of each functional layer and the inclined angle of the inclined tube are specially selected, and the sedimentation filtering effect and the sedimentation efficiency are better.
In some embodiments, the bottom of the overflow channel is provided with an overflow weir, the overflow weir is composed of a plurality of horizontally arranged concave overflow chutes, and the cross section of each overflow chute is triangular, circular arc, rectangular or inverted trapezoid. Thereby further settling and stabilizing the water flow.
In some embodiments, the current stabilizer include the joint at hollow surge tank and both ends, the surge tank with the joint can dismantle the connection, the inside level equidistance of surge tank a plurality of filter unit of having arranged, current stabilizer's the end setting of intaking be in the top of surge tank, current stabilizer's play water end set up the one end of surge tank, current stabilizer's waste water mouth set up the bottom of surge tank, filter unit adopt hollow fiber milipore filter or ceramic filter membrane, rivers pass through the filter membrane and filter. From this running water in the current stabilizer filters under the condition of eliminating pipe network negative pressure again, further ensures quality of water, and filter unit changes conveniently, and the waste water that discharges after the back flush converges into the intake chamber and then gets into next hydrologic cycle again, can make final pollutant discharge from the sewage pipes of sedimentation zone bottom, does not have the water waste.
In some embodiments, the liquid level detection mechanism includes a floating ball disposed in the clean water tank, the floating ball is connected to the water inlet valve through a connecting rod, the connecting rod spans above the second retaining wall, a set water level is disposed in the clean water tank, and the floating ball controls the water inlet valve to open when the water level in the clean water tank is lower than the set water level; when the water level in the clean water tank is higher than or equal to the set water level, the floating ball controls the water inlet valve to be closed, so that the liquid level of the water inlet tank, the liquid level of the sedimentation tank and the liquid level of the clean water tank are ensured to be gradually reduced to form a liquid level difference.
In some embodiments, the volume ratio of the inlet tank to the sedimentation tank is in the range of: 1: 1-1: 9, the ratio of the volume of the water inlet pool plus the sedimentation pool to the volume of the clean water pool is in the range: 1: 9-1: 1. The volume of three ponds is the specific selection, combines above-mentioned other structures to constitute this scheme jointly, realizes the water tank and deposits and the dynamic balance of supplying water, has better effect.
In some embodiments, the water supply system further comprises a sterilizing device, wherein the sterilizing device is respectively arranged on the secondary water supply pipeline and the steady flow water supply pipeline. The disinfection device may be disinfected with ultraviolet or ozone, whereby the water quality is further purified by a combination of precipitation, filtration, disinfection.
A secondary water supply method adopting the secondary water supply system comprises the following steps:
opening a water inlet valve, enabling municipal water to enter a water inlet tank from a first branch in a mode of feeding water above the liquid level and then flow to a sedimentation tank from a water inlet channel at the bottom, deflecting the municipal water in an inverted Z shape from bottom to top and passing through an inclined tube sedimentation unit, enabling purified tap water to overflow from the top to a clean water tank for storage, and opening a valve of a secondary water supply pipeline to supply the purified tap water to households; settling suspended particles in water in the opposite direction, depositing at the bottom of a settling pond, and discharging through a bottom sewage discharge pipeline; when the liquid level detection mechanism detects that the liquid level of the clean water tank is lower than the set water level, the water inlet valve is automatically opened, and when the liquid level detection mechanism detects that the liquid level of the clean water tank is higher than or equal to the set water level, the water inlet valve is controlled to be closed;
closing the waste water valve and the backflushing valve, enabling municipal water to enter the flow stabilizing device from the second branch, and supplying the filtered municipal water to households through the flow stabilizing water supply pipeline; when the flow stabilizer is cleaned, the second branch and the flow stabilizing water supply pipeline are closed, the waste water valve and the backflushing valve are opened, the purified water in the secondary water supply pipeline is used for backflushing, the cleaned waste water is converged into the water inlet area and then enters the next water circulation, and the cleaning time of the flow stabilizer is controlled by timing or detecting the pressure of the water inlet end;
opening the first valve and the second valve, closing the third valve, and performing bypass flow filtration; when the side filter device is cleaned, the first valve and the third valve are opened, the second valve is closed, the back washing is carried out by using purified water in a secondary water supply pipeline or a clean water tank, concentrated water discharged after the back washing is converged into a water inlet tank and then enters the next water circulation, and the back washing time of the side filter device is controlled by timing control or detection of the pressure of a water inlet end or detection of the turbidity of water in the secondary water supply pipeline.
Compared with the prior art, the invention has the advantages that:
(1) the original water tank is divided into three chambers, namely a water inlet pool, a sedimentation pool and a clean water pool, sedimentation units such as inclined pipes are arranged in the sedimentation pool for strengthening sedimentation, so that municipal water is fed into the sedimentation pool through the first retaining wall in an upward flow mode in the sedimentation pool, is deposited and purified, is fed into the clean water pool from the top of the second retaining wall in an overflow mode for storage, and is pressurized and conveyed to residents through a secondary water supply pipeline arranged below the liquid level; the particles in the water are deposited in the sedimentation tank and discharged out of the water tank through a sewage discharge outlet arranged at the bottom. Under the condition of same residence time, the precipitation efficiency can be improved by 3 to 5 times, and the effect of removing suspended particle secondary pollutants is good;
(2) in the invention, secondary pollutants are intensively precipitated and filtered at the bottom of the sedimentation tank, so that the cleaning range is greatly reduced, the pollution discharge is convenient and fast, the problems of large cleaning range, narrow operation space and heavy cleaning task depending on manpower of the existing water tank are solved, and the manpower and the cost are greatly saved;
(3) the water tank provided by the invention is combined with the structure of the flow stabilizer, so that a secondary water supply environment without negative pressure is provided, and a buffering effect on water flow is achieved; in addition, the wastewater discharged after the flow stabilizer is cleaned is converged into the water inlet pool and then enters the next water circulation again, so that final pollutants can be discharged from a sewage discharge pipeline at the bottom of the sedimentation tank, and meanwhile, no water resource is wasted;
(4) by adding the side filtering device to the clean water tank, finer secondary pollutants are gradually transferred to the side filtering device to be intercepted, and the concentration of the secondary pollutants in household water can be gradually reduced along with continuous circulation of secondary water supply, so that the further purification effect is achieved; in addition, concentrated water discharged by the side filter device after backwashing is converged into the water inlet pool to enter the next water circulation again, so that final pollutants can be discharged from a sewage discharge pipeline at the bottom of the sedimentation tank, and meanwhile, no water resource is wasted;
(5) the liquid level detection mechanism is arranged in the clean water tank and used for controlling the opening and closing of the water inlet valve in the water inlet tank, so that the water inlet in the water inlet tank can be controlled through the liquid level in the clean water tank, the liquid level of the water inlet tank is ensured to be always higher than the liquid level of the sedimentation tank and higher than the liquid level of the clean water tank, the liquid level difference of three tanks is formed, and the proceeding and the effect of sedimentation and filtration are ensured;
(6) the normal secondary water supply of the residents is not influenced while the sedimentation tank, the side filtering device and the flow stabilizing device are cleaned, convenience is provided for the residents, and the device is reasonable in structure, low in water cost and convenient for industrial popularization.
Drawings
FIG. 1 is a front view of a unified embodiment of a secondary water supply system having a purification function according to the present invention;
FIG. 2 is a schematic side perspective view of a water tank body in an embodiment of the unified secondary water supply system with purification function according to the present invention;
FIG. 3 is a side view of a tank body in an embodiment of the unified secondary water supply system having a purification function according to the present invention;
FIG. 4 is a plan view of a water tank body in an embodiment of the unified secondary water supply system having a purification function according to the present invention;
FIG. 5 is a schematic cross-sectional view of an inclined tube in a unified embodiment of a secondary water supply system having a purification function according to the present invention.
Wherein the water tank body 1, the first retaining wall 2, the second retaining wall 3, the second retaining wall A section 31, the second retaining wall B section 32, the water inlet tank 4, the sedimentation tank 5, the buffer layer 51, the baffle layer 52, the clarification layer 53, the overflow weir 54, the overflow tank 55, the clean water tank 6, the water inlet channel 7, the overflow channel 8, the municipal water pipeline 9, the first branch 91, the second branch 92, the water inlet valve 10, the sewage pipeline 11, the sewage valve 12, the secondary water pipeline 13, the inclined pipe 14, the floating ball 15, the connecting rod 16, the sterilizing device 17, the water flow meter 18, the fourth valve 19, the filter 20, the fifth valve 21, the water supply pump 22, the bypass filter device 40, the first pipeline 41, the second pipeline 42, the third pipeline 43, the first valve 44, the second valve 45, the third valve 46, the flow stabilizer 60, the steady flow water supply pipeline 61, the back flush pipeline 62, the water supply valve 63, the valve 64, the waste water pipeline 65, a waste water valve 66, a pressure stabilizing tank 67, a joint 68 and a filtering unit 69.
Detailed Description
The following provides a further detailed description of the secondary water supply system with purification function according to the present invention with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
Example one
As shown in the figure, the secondary water supply system with the purification function comprises a water tank body 1 and a flow stabilizer 60, a municipal water pipeline 9 is connected with the water inlet end of the water tank body 1 through a first branch 91, and the municipal water pipeline 9 is connected with the water inlet end of the flow stabilizer 60 through a second branch 92. Two mutually perpendicular's barricades are vertically provided with in the water tank body 1: first barricade 2 and second barricade 3 divide into the three region that the upper portion space is linked together with water tank body 1, according to the rivers direction, are intake chamber 4, sedimentation tank 5 and clean water basin 6 in proper order. The first retaining wall 2 and the second retaining wall 3 are spaced apart from the top wall of the tank body 1 so that the upper parts of the three tanks are communicated.
The water inlet tank 4 is adjacent to the sedimentation tank 5 and is separated by the first retaining wall 2, and the bottom of the first retaining wall 2 is provided with a water inlet channel 7 for communicating the water inlet tank 4 with the sedimentation tank 5. The intake pond 4 sets up in one side with sedimentation tank 5 jointly, and clean water basin 6 sets up at the opposite side, is kept off wall 3 by the second between and separates, and the overflow path 8 of intercommunication sedimentation tank 5 and clean water basin 6 is seted up at the top that the wall 3 was kept off to the second. A plurality of sedimentation units for blocking particles are arranged in the sedimentation tank 5, the first branch 91 is connected with the water inlet tank 4, one end of the first branch 91 entering the water inlet tank 4 (namely the water outlet end of the first branch 91) is arranged above the liquid level, a water inlet valve 10 is arranged on the pipeline, and the arrangement height of the water inlet valve 10 is higher than the heights of the first retaining wall and the second retaining wall. A liquid level detection mechanism connected to the water inlet valve 10 and used for switching the open/close state of the water inlet valve 10 is provided in the clean water tank 6. The bottom of sedimentation tank 6 is provided with sewage pipes 11, is provided with blowoff valve 12 on the sewage pipes 11, is connected with secondary water supply pipe 13 below the rear side liquid level of clean water basin 6, and secondary water supply pipe 13 is used for supplying water to the resident family.
The water outlet end of the flow stabilizer 60 is respectively connected with a flow stabilizing water supply pipeline 61 and a secondary water supply pipeline 13 through a back flush pipeline 62, a water supply valve 63 is arranged on the flow stabilizing water supply pipeline 61, a back flush valve 64 is arranged on the back flush pipeline 62, a waste water port of the flow stabilizer 60 is connected with a water inlet pool through a waste water pipeline 65, and a waste water valve 66 is arranged on the waste water pipeline 65.
In this embodiment, after falling into the water intake pool, the municipal water supply enters the sedimentation tank through the water intake channel at the bottom of the first retaining wall in an upward flow process, is precipitated and purified by the precipitation unit, enters the clean water pool from the overflow channel at the top of the second retaining wall in an overflow mode, and is pressurized and conveyed by the pump set through the secondary water supply pipeline arranged below the liquid level. The particles in the water are deposited in the sedimentation tank and discharged out of the water tank through a sewage discharge pipeline arranged at the bottom. The other path of municipal water supply supplies water to residents through the flow stabilizing device 60, so that negative pressure of a pipe network is avoided, water flow is buffered, wastewater after backwashing is converged into the water inlet tank to enter next water circulation, finally pollutants are discharged through a sewage discharge pipeline at the bottom of the sedimentation tank, and water sources can be saved.
In this embodiment, the first retaining wall 2 and the second retaining wall 3 are made of the same material as the water tank body 1, the second retaining wall 3 includes a second retaining wall a section 31 for separating the water inlet tank 4 and the clean water tank 6 and a second retaining wall B section 32 for separating the sedimentation tank 5 and the clean water tank 6, the second retaining wall a section 31 is as high as the first retaining wall 2, the second retaining wall B section 32 is lower than the second retaining wall a section 31, the height difference range is 50-150 mm, and the overflow channel 8 is formed above the second retaining wall B section 32. The liquid level height that can guarantee intake pond, sedimentation tank and clean water basin reduces gradually from this, forms the liquid level difference, and under the normal water supply condition, water flows through these three ponds of intake pond, sedimentation tank and clean water basin in proper order under the action of gravity that the liquid level difference formed, realizes filtering. In other embodiments, the width of the second retaining wall B section 32 can be reduced appropriately, and the width of the second retaining wall a section 31 is increased accordingly, i.e. the width of the overflow channel 8 is reduced appropriately, so that the settling and purifying path of the tap water can be increased appropriately, and a better effect can be obtained.
Example two
In this embodiment, a secondary water supply system with purification performance still includes other filter device 40, the income water end of other filter device 40 is connected with the secondary water supply pipeline through first pipeline 41, the filtered water end of other filter device 40 is connected with the clean water basin through second pipeline 42, the back flush discharge end of other filter device 40 is connected with the intake chamber through third pipeline 43, be provided with first valve 44 on first pipeline 41, be provided with second valve 45 on the second pipeline 42, be provided with third valve 46 on the third pipeline 43. The side filter device is filled with any one or more of the following filter materials: hollow fiber, quartz sand, fiber balls, active carbon, an ultrafiltration membrane and a microfiltration membrane.
In this embodiment, the water in the clean water tank is continuously filtered and purified by the side filter device 40 to supply high-quality water to the residents, the backwashing water is collected into the water inlet tank to enter the next water circulation during cleaning, and finally the pollutants are discharged through the sewage discharge pipeline at the bottom of the sedimentation tank, so that the water source can be saved, and the normal secondary water supply is not influenced during cleaning.
EXAMPLE III
The rest of the structure is the same as the embodiment, except that: in this embodiment, the water inlet end of the bypass filtering device 40 is connected to the clean water tank 6 through a first pipeline 41, a pressure pump set is disposed on the first pipeline 41 for conveying the water in the clean water tank to the bypass filtering device 40 under pressure, preferably, the first pipeline 41 is connected to one side of the clean water tank 6 close to the overflow channel 8, the second pipeline 42 is connected to one side of the clean water tank 6 close to the secondary water supply pipeline 13, and the water inlet of the secondary water supply pipeline is arranged at a remote diagonal angle to the overflow channel.
Example four
The secondary water supply system with the purification function provided by the embodiment further defines the structure of the flow stabilizer 60 on the basis of the first embodiment. In this embodiment, the flow stabilizer 60 includes a hollow surge tank 67 and connectors 68 at both ends, the surge tank 67 and the connectors 68 are detachably connected, a plurality of filter units 69 are horizontally arranged in the surge tank 67 at equal intervals, and the surge tank 67 and the connectors 68 are detachable to facilitate installation and replacement of the filter units 69. The water inlet end of the flow stabilizer 60 is arranged at the top of the pressure stabilizing tank 67, the vacuum suppressor is further arranged at the top, the water outlet end of the flow stabilizer 60 is arranged at one end of the pressure stabilizing tank 67, the waste water port of the flow stabilizer 60 is arranged at the bottom of the pressure stabilizing tank 67, and the filtering unit 69 adopts a hollow fiber ultrafiltration membrane or a ceramic filtration membrane. In this embodiment, the filter unit 69 is provided in the surge tank 67, and the water flow is filtered by the filter membrane from the side and then discharged from the end to be supplied to the resident, thereby performing a filtering function and improving the quality of the secondary water supply.
EXAMPLE five
The secondary water supply system with purification function provided by the embodiment further defines the structure of the sedimentation tank 5 on the basis of the first embodiment. In this embodiment, the sedimentation tank 5 includes, from bottom to top, a buffer layer 51, a baffle layer 52, and a clarification layer 53 in this order. Wherein, the buffer layer 51 is communicated with the water inlet tank 4 through the water inlet channel 7, and the clarification layer 53 is communicated with the clean water tank 6 through the overflow channel 8. In this embodiment, the sedimentation unit is a hollow inclined tube 14, a plurality of inclined tubes 14 are obliquely arranged on the baffling layer 52, two ends of the inclined tubes 14 are respectively communicated with the buffer layer 51 and the clarifying layer 53, and water flows through the hollow inclined tube 14.
In this embodiment, the water that comes from the intake chamber gets into the sedimentation tank from first barricade bottom, passes through buffer layer, baffling layer and clarification layer from bottom to top in proper order, and the clear water gets into the clean water basin with the overflow mode from the clarification layer, and impurity is then kept off by the pipe chute inner wall on baffling layer under rivers and action of gravity, accumulates in the bottom of sedimentation tank.
In this embodiment, the cross section of pipe chute 14 is regular hexagon, the inscribed circle diameter of pipe chute 14 is 50mm, inscribed circle diameter also can be 35mm in other embodiments, 85mm etc. closely link to each other between the adjacent pipe chute 14 and arrange into the array form, pipe chute 14 can set up one row and also can set up the multirow, pipe chute 14 from top to bottom inclines towards the direction of keeping away from first barricade 2, make rivers be reverse Z style of calligraphy baffling, from bottom to top passes through buffer layer 51, pipe chute 14 and clarification layer 53 in proper order, get into clean water basin 6 from overflow path 8. This spatial structure makes rivers change the flow direction many times, and impurity such as suspended particles is kept off under the inertia and is fallen and deposit on the lower half side inner wall of pipe chute, along the pipe chute deposit to sedimentation tank bottom or wash away by wasing water, has better precipitation effect to secondary pollutant such as suspended particles from this.
In this embodiment, the height ratio of the buffer layer 51, the baffling layer 52 and the clarifying layer 53 is 6:10:6, in other embodiments, the height ratio may be 5:10:5, 10:10:10, and the like, and the included angle between the inclined tube 14 and the horizontal direction is 45-60 °.
EXAMPLE six
The second water supply system with purification function that this embodiment proposes, the remaining structure is the same as embodiment five, the difference lies in: in this embodiment, the precipitation unit is the swash plate, and a plurality of swash plates are parallel to each other and arrange in baffling layer 52 in the slope, and buffer layer 51 and clarification layer 53 are connected respectively to the both ends of swash plate, and rivers pass through between the adjacent swash plate, and impurity such as suspended particles is kept off under the inertia effect and is fallen and deposit at the upper surface of swash plate, and deposit to the sedimentation tank bottom or wash away by wasing water along the swash plate.
EXAMPLE seven
The secondary water supply system with purification function proposed in this embodiment further defines the structure of the sedimentation tank 5 on the basis of any one of the above embodiments. In this embodiment, the bottom of the overflow channel 8 is provided with an overflow weir 54, the overflow weir 54 is formed by a plurality of horizontally arranged concave overflow chutes 55, the cross section of each overflow chute 55 is triangular, circular arc, rectangular or inverted trapezoid, and the top end of the overflow weir 54 is lower than the height of the second retaining wall a section 31.
Example eight
The secondary water supply system with the purification function provided by the present embodiment further defines the structure of the liquid level detection mechanism on the basis of any one of the above embodiments. In this embodiment, the liquid level detection mechanism includes a floating ball 15 disposed in the clean water tank 6, the floating ball 15 is connected to the water inlet valve 10 through a connecting rod 16, the connecting rod 16 is disposed above the second blocking wall 3 in a straddling manner, a set water level is disposed in the clean water tank 6, and when the water level in the clean water tank 6 is lower than the set water level, the floating ball 15 controls the water inlet valve 10 to open; when the water level in the clean water tank 6 is higher than or equal to the set water level, the floating ball 15 controls the water inlet valve 10 to be closed, so that the liquid level of the water inlet tank 4, the liquid level of the sedimentation tank 5 and the liquid level of the clean water tank 6 are gradually reduced to form a liquid level difference, and sufficient water quantity in the clean water tank can be ensured, so that secondary water supply of residents is ensured.
Example nine
The present embodiment proposes a secondary water supply system with a purification function, which is further improved in the rest of the structure based on any of the above embodiments. In this embodiment, the bottom of the first retaining wall 2 is provided with a water inlet channel 7, so that the water inlet tank 4 is communicated with the bottom of the sedimentation tank 5, and the bottom of the first retaining wall 2 is 25-100 cm high.
In this embodiment, the volume ratio range of the water inlet tank 4 and the sedimentation tank 5 is: 1: 1-1: 9, the ratio of the volume of the water inlet tank 4 plus the sedimentation tank 5 to the volume of the clean water tank 6 (namely, the left tank and the right tank separated by the second retaining wall) is: 1: 9-1: 1.
In this embodiment, the water supply device further comprises an ultraviolet disinfection device 17, the disinfection device 17 is respectively arranged on the secondary water supply pipeline and the steady flow water supply pipeline 61, and tap water is supplied to residents after being disinfected by ultraviolet light. In other embodiments, the disinfection device 17 may be disposed in a clean water tank, and the disinfection device 17 may also be disinfected by ozone.
In this embodiment, a water flow meter 18, a fourth valve 19, and a filter 20 are provided in this order from front to back on the city water line 9. And a fifth valve 21 and at least one water supply pump 22 for controlling the opening and closing of the secondary water supply pipeline are sequentially arranged on the secondary water supply pipeline 13 from front to back, and the water supply pump is used for providing secondary water supply pressure for residents. The steady flow water supply line 61 is also provided with a water supply pump for supplying the secondary water supply pressure to the residents.
In this embodiment, the water flow meter 18, the fourth valve 19, the water inlet valve 10, the liquid level sensor, the water supply pump 22, the fifth valve 21, the blowdown valve 12, the first valve 44, the second valve 45, the third valve 46, the water supply valve 63, the backflushing valve 64, and the waste water valve 66 are electrically connected to an external control system (not shown), and the control method is conventional and will not be described again. In other embodiments, each valve can adopt other alternative structures such as a manual valve.
In this embodiment, a circular manhole is provided above the water inlet tank 4 for manual cleaning or maintenance. Can directly wash by water to the intake chamber during washing, perhaps because there is the interval in first barricade top, can directly wash by water to pipe chute or swash plate unit from the manhole, rivers converge to sewage pipes and discharge. The cleaning is convenient, the cleaning area is greatly reduced, and the labor is saved.
Example ten
A method for secondary water supply using the secondary water supply system of any of the above embodiments, comprising the steps of (arrow indicates normal operating water flow direction):
the water inlet valve 10 is opened, so that municipal water enters the water inlet tank 4 from the first branch 91 in a water inlet mode above the liquid level and flows to the sedimentation tank 5 from the water inlet channel 7 at the bottom, the municipal water turns in a reverse Z shape and flows back from bottom to top and passes through the inclined pipe 14 or the inclined plate sedimentation unit, purified tap water overflows into the clean water tank 6 from the top for storage, and a valve of the secondary water supply pipeline 13 is opened to supply to residents. The impurities such as suspended particles in the water are precipitated in the sedimentation tank 5 in the opposite direction, are deposited at the bottom of the sedimentation tank and are discharged through a bottom sewage discharge pipeline 11. When the liquid level detection mechanism in the clean water tank 6 detects that the liquid level of the clean water tank is lower than the set water level, the water inlet valve 10 is automatically opened, and when the liquid level detection mechanism detects that the liquid level of the clean water tank is higher than or equal to the set water level, the water inlet valve 10 is controlled to be closed;
closing the waste water valve 66 and the backflushing valve 64 to enable municipal water to enter the flow stabilizing device 60 from the second branch 92, and supplying the filtered municipal water to households through the flow stabilizing water supply pipeline 61; when the flow stabilizer 60 is cleaned, the second branch 92 and the flow-stabilizing water supply pipeline 61 are closed, the waste water valve 66 and the back flush valve 64 are opened, back flush is carried out by using purified water in the secondary water supply pipeline, the cleaned waste water is converged into a water inlet area and then enters the next water circulation, wherein the cleaning time of the flow stabilizer 60 is controlled by timing or detecting the pressure at the water inlet end of the flow stabilizer 60;
opening the first valve and the second valve, closing the third valve, and performing bypass flow filtration; when the side filter device is cleaned, the first valve and the third valve are opened, the second valve is closed, the purified water in the secondary water supply pipeline or the clean water tank is used for back washing, the concentrated water discharged after the back washing is converged into the water inlet tank and then enters the next water circulation, and the back washing time of the side filter device is controlled by timing control or detection of the pressure at the water inlet end of the side filter device or detection of the turbidity of the water in the secondary water supply pipeline.
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 system with purification function comprises a water tank body and a flow stabilizer, wherein a municipal water pipeline is connected with the water inlet end of the water tank body through a first branch, and is connected with the water inlet end of the flow stabilizer through a second branch, and the secondary water supply system is characterized in that two mutually perpendicular retaining walls are vertically arranged in the water tank body, the water tank body is divided into three areas communicated with an upper space, according to the water flow direction, the three areas are sequentially provided with a water inlet pool, a sedimentation pool and a clear water pool, the water inlet pool is adjacent to the sedimentation pool and is separated by the first retaining wall, the bottom of the first retaining wall is provided with a water inlet channel communicated with the water inlet pool and the sedimentation pool, the two pools are separated from the clear water pool by a second retaining wall, the top of the second retaining wall is provided with an overflow channel communicated with the sedimentation pool and the clear water pool, the sedimentation tank is internally provided with a plurality of sedimentation units for blocking particles, the first branch is connected with the water inlet tank, one end of the first branch entering the water inlet tank is provided with a water inlet valve, the clean water tank is internally provided with a liquid level detection mechanism which is connected with the water inlet valve and used for switching the open-close state of the water inlet valve, the bottom end of the sedimentation tank is provided with a sewage discharge pipeline, the sewage discharge pipeline is provided with a sewage discharge valve, the rear side of the clean water tank is connected with a secondary water supply pipeline, the water outlet end of the flow stabilizing device is respectively connected with the flow stabilizing water supply pipeline and the secondary water supply pipeline through a back flush pipeline, the flow stabilizing water supply pipeline is provided with a water supply valve, the back flush pipeline is provided with a back flush valve, and the waste water port of the flow stabilizing device is connected with the water inlet tank through a waste water pipeline, and a waste water valve is arranged on the waste water pipeline.
2. The secondary water supply system with the purification function as claimed in claim 1, further comprising a secondary filtering device, wherein the water inlet end of the secondary filtering device is connected with the secondary water supply pipeline or the clean water tank through a first pipeline, the filtered water outlet end of the secondary filtering device is connected with the clean water tank through a second pipeline, the back washing water outlet end of the secondary filtering device is connected with the water inlet tank through a third pipeline, the first pipeline is provided with a first valve, the second pipeline is provided with a second valve, and the third pipeline is provided with a third valve; the side filter device is filled with any one or more of the following filter materials: hollow fiber, quartz sand, fiber balls, active carbon, an ultrafiltration membrane and a microfiltration membrane.
3. The secondary water supply system with purification function as claimed in claim 1, wherein said first retaining wall, said second retaining wall and said water tank body are made of the same material, said second retaining wall comprises a second retaining wall A section for separating said water inlet tank and said clean water tank and a second retaining wall B section for separating said sedimentation tank and said clean water tank, said second retaining wall A section is the same as said first retaining wall in height, said second retaining wall B section is lower than said second retaining wall A section in height, the height difference range is 50-150 mm, said second retaining wall B section is formed above said overflow channel, said first retaining wall bottom is 25-100 cm in height.
4. The secondary water supply system with purification function as claimed in claim 1, wherein said sedimentation tank comprises a buffer layer, a baffling layer and a clarification layer from bottom to top in sequence, said buffer layer is communicated with said water inlet tank through said water inlet channel, said clarification layer is communicated with said clean water tank through said overflow channel, said sedimentation unit is a hollow inclined tube, a plurality of said inclined tubes are obliquely arranged on said baffling layer, two ends of said inclined tube are respectively communicated with said buffer layer and said clarification layer, the cross section of said inclined tube is regular hexagon, adjacent said inclined tubes are closely connected to each other to form an array, said inclined tubes are inclined from top to bottom in the direction away from said first retaining wall, so that the water flow is in reverse Z-shape and passes through said buffer layer, said inclined tubes and said clarification layer from bottom to top in sequence, the buffer layer, the baffling layer and the clarification layer have the height ratio range of (5-10) to (10) and (5-10), and the inclined angle of the inclined tube in the horizontal direction is 45-60 degrees.
5. The secondary water supply system with a purification function as claimed in claim 4, wherein the bottom of the overflow channel is provided with an overflow weir, the overflow weir is composed of a plurality of horizontally arranged concave overflow chutes, and the cross section of each overflow chute is triangular, circular arc, rectangular or inverted trapezoid.
6. The secondary water supply system with purification function as claimed in claim 1, wherein the flow stabilizer comprises a hollow pressure stabilizing tank and connectors at two ends, the pressure stabilizing tank and the connectors are detachably connected, a plurality of filtering units are horizontally and equidistantly arranged in the pressure stabilizing tank, the water inlet end of the flow stabilizer is arranged at the top of the pressure stabilizing tank, the water outlet end of the flow stabilizer is arranged at one end of the pressure stabilizing tank, the waste water outlet of the flow stabilizer is arranged at the bottom of the pressure stabilizing tank, the filtering units are hollow fiber ultrafiltration membranes or ceramic filtration membranes, and water flow is filtered through the filtration membranes.
7. The secondary water supply system with purification function as claimed in claim 1, wherein said liquid level detection mechanism comprises a floating ball disposed in said clean water tank, said floating ball is connected to said water inlet valve through a connecting rod, said connecting rod is disposed over said second retaining wall, a set water level is disposed in said clean water tank, and when the water level in said clean water tank is lower than the set water level, said floating ball controls said water inlet valve to open; when the water level in the clean water tank is higher than or equal to the set water level, the floating ball controls the water inlet valve to be closed, so that the liquid level of the water inlet tank, the liquid level of the sedimentation tank and the liquid level of the clean water tank are ensured to be gradually reduced to form a liquid level difference.
8. The secondary water supply system with purification function as claimed in claim 1, wherein the volume ratio of the inlet tank to the sedimentation tank is in the range of: 1: 1-1: 9, the ratio of the volume of the water inlet pool plus the sedimentation pool to the volume of the clean water pool is in the range: 1: 9-1: 1.
9. The secondary water supply system with purification function as claimed in claim 1, further comprising sterilizing means provided on said secondary water supply line and said constant flow water supply line, respectively.
10. A secondary water supply method using the secondary water supply system according to any one of claims 1 to 9, characterized by comprising the steps of:
opening a water inlet valve, enabling municipal water to enter a water inlet tank from a first branch in a mode of feeding water above the liquid level and then flow to a sedimentation tank from a water inlet channel at the bottom, deflecting the municipal water in an inverted Z shape from bottom to top and passing through an inclined tube sedimentation unit, enabling purified tap water to overflow from the top to a clean water tank for storage, and opening a valve of a secondary water supply pipeline to supply the purified tap water to households; settling suspended particles in water in the opposite direction, depositing at the bottom of a settling pond, and discharging through a bottom sewage discharge pipeline; when the liquid level detection mechanism detects that the liquid level of the clean water tank is lower than the set water level, the water inlet valve is automatically opened, and when the liquid level detection mechanism detects that the liquid level of the clean water tank is higher than or equal to the set water level, the water inlet valve is controlled to be closed;
closing the waste water valve and the backflushing valve, enabling municipal water to enter the flow stabilizing device from the second branch, and supplying the filtered municipal water to households through the flow stabilizing water supply pipeline; when the flow stabilizer is cleaned, the second branch and the flow stabilizing water supply pipeline are closed, the waste water valve and the backflushing valve are opened, the purified water in the secondary water supply pipeline is used for backflushing, the cleaned waste water is converged into the water inlet area and then enters the next water circulation, and the cleaning time of the flow stabilizer is controlled by timing or detecting the pressure of the water inlet end;
opening the first valve and the second valve, closing the third valve, and performing bypass flow filtration; when the side filter device is cleaned, the first valve and the third valve are opened, the second valve is closed, the back washing is carried out by using purified water in a secondary water supply pipeline or a clean water tank, concentrated water discharged after the back washing is converged into a water inlet tank and then enters the next water circulation, and the back washing time of the side filter device is controlled by timing control or detection of the pressure of a water inlet end or detection of the turbidity of water in the secondary water supply pipeline.
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| CN202010061087.9A CN111139897A (en) | 2020-01-19 | 2020-01-19 | Secondary water supply system with purification function and method |
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| CN202010061087.9A CN111139897A (en) | 2020-01-19 | 2020-01-19 | Secondary water supply system with purification function and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113774999A (en) * | 2021-10-19 | 2021-12-10 | 上海熊猫机械(集团)有限公司 | Secondary water supply direct drinking system |
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