CN101684024A - Seawater desalinating device - Google Patents
Seawater desalinating device Download PDFInfo
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- CN101684024A CN101684024A CN200810167425A CN200810167425A CN101684024A CN 101684024 A CN101684024 A CN 101684024A CN 200810167425 A CN200810167425 A CN 200810167425A CN 200810167425 A CN200810167425 A CN 200810167425A CN 101684024 A CN101684024 A CN 101684024A
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- 239000013535 sea water Substances 0.000 title claims abstract description 65
- 238000001914 filtration Methods 0.000 claims abstract description 221
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000000706 filtrate Substances 0.000 claims description 36
- 239000002245 particle Substances 0.000 claims description 20
- 229910021536 Zeolite Inorganic materials 0.000 claims description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 14
- 239000010457 zeolite Substances 0.000 claims description 14
- 229960000892 attapulgite Drugs 0.000 claims description 10
- 235000013312 flour Nutrition 0.000 claims description 10
- 229910052625 palygorskite Inorganic materials 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000005189 flocculation Methods 0.000 claims description 9
- 230000016615 flocculation Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical group Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000011001 backwashing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 23
- 241000196324 Embryophyta Species 0.000 description 13
- 238000011010 flushing procedure Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 239000013505 freshwater Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
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- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 235000019600 saltiness Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 101100186820 Drosophila melanogaster sicily gene Proteins 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 230000008020 evaporation Effects 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The invention discloses a seawater desalinating device which comprises an impounding reservoir, a first filtering unit, a water storage unit, a second filtering unit and a drain pipe, wherein the impounding reservoir, the first filtering unit, the water storage unit and the second filtering unit are sequentially communicated, the front end part of the first filtering unit is communicated with thedrain pipe, the water outlet of the drain pipe is lower than that of the second filtering unit, the drain pipe is provided with a bent part, the bottom of the water storage unit is higher than the water outlet of the second filtering unit, the impounding reservoir is positioned at the highest part of the seawater desalinating device, the front end part of the first filtering unit is the part in front of the effectively filtering part of the first filtering unit, and the bent part of the drain pipe is higher than the bottom of the water storage unit and is higher than the highest part of a communicated part of the water storage unit and the second filtering unit. Compared with the prior art, the invention can automatically complete the filtration and the back washing for the first filteringunit without conventional sources of energy, thereby saving sources of energy.
Description
Technical field
The present invention relates to a kind of sea water desalinating plant.
Background technology
Along with the development of society, the discharging of industrial sewage and sanitary sewage, the increase of the size of population, with respect to growing fresh water demand, the Freshwater resources that can be the human use on the earth are minimizing trend.In the water reserve in the whole world, fresh water only accounts for 2.53%, and salt water accounts for 97.47%, and the overwhelming majority is a seawater in the salt water, so sea water desaltination becomes an important channel that solves the fresh water shortage.
At present, sea water desaltination especially plays a significant role in Middle East and some areas, island.For example, the drinking water source of Israel 70% comes from sea water desaltination water, and the daily output sea water desaltination water yield reached 73.8 ten thousand steres in 2005; United Arab Emirates' tap water mainly relies on sea water desaltination water, and the daily output sea water desaltination water yield reached 546.6 ten thousand steres in 2003; The Italy Sicily, the daily output sea water desaltination water yield was 13.5 ten thousand steres in 2005, accounted for 15%～20% of whole drinkable water sources on the island.By the end of in December, 2003, existing more than 130 the countries use desalination technology in the whole world, about 3775 ten thousand steres of sea water desaltination water yield per day.Wherein, 80% is used for tap water, has solved people's water supply problem more than 100,000,000, and promptly 1/50 population supplies drinking water by sea water desaltination in the world.
Yet Cost of seawater desalination is higher, and WWF's whole world fresh water plan is responsible for outstanding personality Mi Bituo and is pointed out: " sea water desaltination is a kind of expensive, power consumption, can cause the system water mode of aggravation Greenhouse effect." at present, sea water desaltination three big mainstream technologys are multistage flash evaporation (MSF), low-temperature multi-effect (MED) and reverse osmosis (RO), though aspect reducing cost, obtained bigger effect, still higher relatively.
Summary of the invention
The object of the present invention is to provide a kind of sea water desalinating plant, can realize automatic sea water desaltination.
In order to realize above goal of the invention, the invention provides following technical scheme:
A kind of sea water desalinating plant, comprise water reservoir, first filtering unit, the water storage unit, second filtering unit and blow-off pipe, described water reservoir, first filtering unit, the water storage unit, second filtering unit is communicated with successively, the leading section of described first filtering unit is communicated with blow-off pipe, the water outlet of described blow-off pipe is lower than the water outlet of described second filtering unit, described blow-off pipe has turn of bilge, the unitary bottom of described water storage is higher than the water outlet of described second filtering unit, described water reservoir is in the highest point of sea water desalinating plant, the leading section of described first filtering unit is that first filtering unit effectively filters the position before the position, and the turn of bilge of described blow-off pipe is higher than the unitary bottom of water storage and is higher than the water storage unit and the high-order bit of the interconnecting part of second filtering unit.
Preferably, between the described water reservoir and first filtering unit valve is arranged.
Preferably, be filled with the filtration filtrate in described first filtering unit.
Preferably, described filtration filtrate is the mixture of zeolite, Attapulgite stone flour, diatomite and polymerize aluminum chloride.
Preferably, described filtration filtrate is the mixture of zeolite, Attapulgite stone flour, diatomite and iron(ic) chloride.
Preferably, the particle diameter of described zeolite is 104～840 microns.
Preferably, described zeolite, Attapulgite stone flour and diatomaceous weight ratio are 18～22: 18～22: 9～11.
Preferably, described first filtering unit is divided into more than two sections or two sections, and each Duan Zhongjun of described first filtering unit is filled with the filtration filtrate; For per two sections, be the last period near a section of the first filtering unit leading section, another section is back one section, the particle diameter of the filtration filtrate in the last period is greater than the particle diameter of the filtration filtrate in back a section.
Preferably, described first filtering unit is divided into three sections, be respectively first section, second section and the 3rd section from the leading section of first filtering unit, all be filled with the filtration filtrate in described first section, second section and the 3rd section, the particle diameter of described filtration filtrate is respectively: 420～840 microns, 150～178 microns and 104～124 microns.
Preferably, described first filtering unit is to be filled with first pipeline that filters filtrate, there is one to keep sleeve pipe on the top of described first pipeline, have the hole on described at least one face of keeping in telescopic side or the end face, described keeping has ball float in the sleeve pipe, described ball float can not pass through described hole, in the outside of described first pipeline second pipeline is arranged, described second pipeline respectively with described telescopic bottom and described first pipe connection kept, described ball float can not by second pipeline with keep junction bottom the telescopic.
Preferably, the described sleeve pipe of keeping is a turbination.
Preferably, described ball float is hollow rubber ball or baton round.
Preferably, described water storage unit is communicated with the device that flocculation agent is housed.
Preferably, described flocculation agent is an iron trichloride.
Preferably, there is topping-up pump described water storage unit between the water outlet of described second filtering unit.
Preferably, described second filtering unit is divided into more than two sections or two sections, and each Duan Zhongjun of described second filtering unit is filled with the filtration filtrate; For per two sections, be the last period near a section of the second filtering unit leading section, another section is back one section, the particle diameter of the filtration filtrate in the last period is greater than the particle diameter of the filtration filtrate in back a section.
Sea water desalinating plant provided by the invention, the mouth of pipe of blow-off pipe is lower than the water outlet of second filtering unit, and be provided with the water storage unit, when the filtration resistance of first filtering unit reaches certain degree, the seawater that comes from water reservoir still enters first filtering unit with same speed, sea level fluctuations in first filtering unit will rise, syphonic effect when exceeding the turn of bilge of blow-off pipe, the sea level fluctuations in first filtering unit then takes place, the water that comes from the water storage unit will be to carrying out back flushing first filtering unit, reach the effect that first filtering unit is oppositely cleaned, the filtration resistance of the filtering unit of winning is significantly reduced, after water in the water storage unit uses up, then the water that comes from water reservoir passes through first filtering unit again, filters.With respect to prior art, the present invention need not that the conventional energy just can be finished filtration automatically and to the back flushing of first filtering unit, can save energy.
Description of drawings
Fig. 1 is the synoptic diagram of a kind of embodiment of sea water desalinating plant provided by the present invention.
Fig. 2 is the synoptic diagram of a kind of embodiment of first filtering unit.
Fig. 3 be first filtering unit shown in Figure 2 top keep the telescopic structural representation.
Each label is in the accompanying drawing: 1---water reservoir, 2---first filtering unit, 3---the water storage unit, 4---second filtering unit, 5---blow-off pipe, 201---first section of first filtering unit, 202---second section of first filtering unit, 203---the 3rd section of first filtering unit, 301---first pipeline, 302---second pipeline, 303---keep sleeve pipe, 304---ball float.
Embodiment
In order to make those skilled in the art understand the present invention better, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
See also Fig. 1, Fig. 1 is the synoptic diagram of a kind of embodiment of sea water desalinating plant provided by the present invention.
This sea water desalinating plant, comprise water reservoir 1, first filtering unit 2, water storage unit 3, second filtering unit 4 and blow-off pipe 5, described water reservoir 1, first filtering unit 2, water storage unit 3, second filtering unit 4 is communicated with successively, the leading section of described first filtering unit 1 is communicated with blow-off pipe 5, the water outlet of described blow-off pipe 5 is lower than the water outlet of described second filtering unit 4, described blow-off pipe 5 has turn of bilge, the bottom of described water storage unit 3 is higher than the water outlet of described second filtering unit 4, described water reservoir 1 is in the highest point of sea water desalinating plant, the leading section of described first filtering unit 2 is that first filtering unit effectively filters the position before the position, and the turn of bilge of described blow-off pipe 5 is higher than the bottom of water storage unit 4 and is higher than water storage unit 3 and the high-order bit of the interconnecting part of second filtering unit 4.
The main effect of first filtering unit 2 is the not dissolved impurity in the filtering sea.Seawater is a heterogeneous system that is in the thermodynamic instability state, contain a large amount of suspended substances and colloidalmaterial, the coastal seawater muddiness, multiple dirts such as silt, marine alga and various marine flora and fauna, bacterium are arranged, also comprise various particulate matter, form that the surface all has negative charge regardless of it, and the surface electrical behavior uniformity is in the dispersive stable state.In first filtering unit 2, can fill the filtration filtrate, filter filtrate and can select the strong material of adsorptivity, the mixture of zeolite, Attapulgite stone flour, diatomite and polymerize aluminum chloride for example, it also can be the mixture of zeolite, Attapulgite stone flour, diatomite and polymerize aluminum chloride, the particle diameter of zeolite is chosen as 104～840 microns, more preferably, zeolite, Attapulgite stone flour and diatomaceous weight ratio are 18～22: 18～22: 9～11.These filter material surfaces have more hydroxyl absorption position, may have positive charge and attract electronegative particle in the water in a large number, the colloidal attitude that forms after the filter material surface aquation can the intensive planar water in mineral ion and the bigger organism of molecular weight, can reduce simultaneously the pedesis of particulate matter particle, stronger flocculating settling effect is arranged.Effective filtration position of first filtering unit refers to, and can hold back the position of impurity not dissolved in the seawater, generally refers to be filled with the position of filtering filtrate.Can certainly select for use the filtration filter screen to carry out filtering sea, effectively filter the position this moment and promptly refer to filter the position that filter screen exists.
Fig. 2 is the synoptic diagram of a kind of embodiment of first filtering unit.As shown in Figure 2, first filtering unit is divided into three sections: first section 201, second sections 202, the 3rd sections 203.Sectional is to count since the leading section of first filtering unit in proper order.All be filled with the filtration filtrate in first section 201, second sections 202, the 3rd sections 203, the particle diameter that filters filtrate is respectively: 420～840 microns, 150～178 microns and 104～124 microns.Above-mentioned particle diameter can screen corresponding to the sieve of different meshes and obtain.Filter filtrate and generally select the filtration filtrate of the mutual collocation of multiple adsorption function for use, for example: gac, diatomite, zeolite and bamboo charcoal or the like.In the present embodiment, the zeolite of selecting for use, Attapulgite stone flour and diatomaceous weight ratio are 2: 2: 1.
First filtering unit can become one separately, also can be arranged in the pipeline that passes through in the desalting process, is made of one with the sea water desaltination pipeline.Be that first filtering unit and sea water desaltination pipeline are made of one shown in Fig. 2, the profile of first filtering unit is cylindrical, also can select other shape, cuboid for example, the three-dimensional shape that perhaps has other cross-sectional shape, the shape of selection will be beneficial to the circulation filtration of design, installation, maintenance, water etc.If for example be designed to columniform cross section just better, columniform filtration cross section is circular, can there be very sharp-pointed filtration dead angle, each several part filters evenly, filtering rate gradient at filtering rate of justifying the centre and edge is little, filter evenly, therefore the filtration resistance of first filtering unit can be comparatively even in the process that descends, and helps prolonging the work-ing life of first filtering unit.Because the time of the forward filter of first filtering unit is long more, the clear water that can access is also just many more, and this is the desired purpose that reaches of sea water desaltination just, obtains clear water as much as possible with the shortest time of the cost of minimum.
See also Fig. 2 and Fig. 3, Fig. 3 be first filtering unit shown in Figure 2 top keep the telescopic structural representation.Structure shown in Figure 2 and structure shown in Figure 3 can be stitched together.To be filled with first pipeline 301 of filtration filtrate as first filtering unit, there is one to keep sleeve pipe 303 on the top of first pipeline 301, this top that reaches all around of keeping sleeve pipe 303 adopts fence to make, and make cylindric, ball float 304 is arranged in keeping sleeve pipe, ball float 304 is retrained by fence, can only keep sleeve pipe 303 inside.Have first pipeline, 302, the second pipelines 302 to be communicated with the bottom of keeping sleeve pipe 303 and first pipeline 301 respectively in the outside of first pipeline 301, ball float 304 can not be communicated with the place with the bottom of keeping sleeve pipe 303 by second pipeline 302.
After filtering beginning, enter first filtering unit 2 by keeping sleeve pipe 303 continuously from the seawater of water reservoir 1, this moment ball float 304 since the effect with gravity of washing away of seawater be close to second pipeline 302 and be communicated with the place with the bottom of keeping sleeve pipe 303.Seawater can not pass through second pipeline 302, even have, also is a considerably less part.Carry out along with filtering, the dirt that is trapped in first filtering unit 2 is more and more, filter opening is more and more littler, filtering velocity is more and more slower, and pending water still constantly enters sea water desalinating plant, and the water liquid level can constantly rise, buoyancy can hold up ball float 304, dirt also can enter the top of first filtering unit by second pipeline 302, when the water surface rises the last turn of bilge that surpasses blow-off pipe 5 syphonic effect will take place, and dirt is along with discharge.
Therefore, keep sleeve pipe 303 and make the place, hole that inverted cone-shaped has ball float 304 just to drop to keep sleeve pipe 303 to be communicated with second pipeline 302, being equivalent to provides a moving conduit for ball float 304.Keeping sleeve pipe 303 preferred shape is that top is big, and the bottom is little, and not necessarily inverted cone-shaped also can be chamfered edge taper or the shape that is similar to the chamfered edge taper.Keep sleeve pipe 303 and also can be cylindric, the factory building bodily form, rule or irregular shape such as prismatic, as long as can provide moving conduit for ball float 304, and ball float 304 can finish said process smoothly, all is fine.
Keeping 304 material can be hollow Metal Ball, also can be that rubber sphere, baton round, timber ball or the like all are fine, and keeps the density that 304 global density is less than water.Preferred rubber sphere and the baton round of using, especially rubber sphere, reason is, rubber sphere can have bigger elasticity, can well seal the position that is communicated with of keeping sleeve pipe 303 and second pipeline 302, yet rubber sphere needs certain rigidity, because rubber sphere need be born certain hydraulic pressure in seal process, can not be pressed in second pipeline 302 because hydraulic pressure is too big.
Water storage shown in Figure 1 unit 3 is a right cylinder, and water storage unit 3 also can be designed to box shape such as rectangular parallelepiped, square, spheroid.Entering water storage unit 3 from the filtered water of first filtering unit 2 assembles the water storage unit, water level will constantly rise, when the high-order bit of the communicating pipe by the water storage unit 3 and second filtering unit 4 of rising, syphonic effect takes place, and water constantly enters second filtering unit 4 and carries out filtration treatment.When the filtration resistance of first filtering unit 2 is very big, and when the water level of the top of first filtering unit 2 rise to surpass the highest turn of bilge of blow-off pipe 5, because the outlet of second filtering unit 4 is higher than the outlet of blow-off pipe, antisiphon will take place in this moment, first filtering unit 2 is carried out counterflush to recover filtration capacity, and these water need the water in the water storage unit 3 to supply with, and can guarantee the effect of counterflush.
In general, water storage unit 3 need be communicated with the device that flocculation agent is housed.If also do not reach the standard of processing through first filtering unit, 2 filtering seawater, so often need to make water storage unit 3 to be communicated with the device that flocculation agent is housed.The effect of flocculation agent be with water in impurity reaction generate precipitation, be beneficial to the removal of impurity.Flocculation agent preferably uses iron trichloride.
Between the water outlet of the water storage unit 3 and second filtering unit 4 topping-up pump can be set, the effect of topping-up pump mainly is that a recoil pressure is provided during for back flushing.In sea water desalinating plant shown in Figure 1, after the filtration resistance of first filtering unit reaches certain value, water level rises, after the vertex of water level above the turn of bilge of blow-off pipe 5 syphonic effect takes place, the water in the water storage unit 3 washes to recover the filtration capacity of first filtering unit first filtering unit.Yet, the process of above-mentioned flushing first filtering unit can only be that the Resistance Value at filtering unit reaches and just carries out like this can't be filtering the time, and in engineering reality, wish can be at any time according to going out aqueous condition or practical situation are carried out back flushing, therefore, can between the water outlet of the water storage unit 3 and second filtering unit 4, topping-up pump can be set, when needs counterflush first filtering unit 2, offer pressure of ducted water by topping-up pump, make it pass through the vertex of the turn of bilge of blow-off pipe 5, back flushing this moment also promptly takes place, and can stop topping-up pump, be equivalent to just to get final product to the initial driving force that provides of back flushing siphon, energy consumption also is seldom, improves flush efficiency if desired or when being referred to as to improve the flow rate of flushing, also can start topping-up pump, make that the power of flushing is more powerful, well finish flushing first filtering unit.
On the pipeline of water reservoir 1 and 2 connections of first filtering unit valve can be set, the aperture of valve is preferably adjustable.The aperture of valve can be regulated from the flow velocity of the seawater of water reservoir 1, enter first filtering unit 2 from water reservoir 1, the size of flow velocity will decide according to the filtration capacity of first filtering unit 2, in general, in the starting stage, because the filtration resistance of first filtering unit 2 is little, filtration velocity is fast, the aperture of heightening valve that therefore can be suitable.After the filtration resistance of first filtering unit 2 entered a plateau, the decline that the aperture of valve can be a little was to use the filtering rate of first filtering unit 2.Being provided with of this valve can also have an advantage can be embodied in the process that oppositely flushing takes place automatically in addition, because rise to peaked the time in the filtration resistance of first filtering unit 2, if it is less from the flow velocity of the seawater of water reservoir 1, when rising to the below of turn of bilge of blow-off pipe 5 from the water level of first filtering unit, 2 tops so, because blow-off pipe has certain diameter, the seawater of first filtering unit, 2 tops will directly flow out blow-off pipe owing to law of connected vessels so, like this, syphonic effect does not just take place, therefore at this moment, the staff can be suitable the aperture of opening big valve, make water level rise to be full of the whole turn of bilge of blow-off pipe rapidly, impel the generation of syphonic effect, if after the syphonic effect generation, valve opening can be turned down, even also can close.
Desalination and filtration are still carried out in the main effect of second filtering unit 4, to increase filter effect, reach the requirement of sea water desaltination.Second filtering unit 4 and first filtering unit 2 do not have the difference of essence, just the filtration medium of second filtering unit need fill finer and closely woven, adsorptive power needs stronger.Second filtering unit also is divided into more than two sections or two sections, and each Duan Zhongjun of described second filtering unit is filled with the filtration filtrate; For per two sections, be the last period near a section of the second filtering unit leading section, another section is back one section, the particle diameter of the filtration filtrate in the last period is greater than the particle diameter of the filtration filtrate in back a section.In embodiment shown in Figure 1, second filtering unit is divided into two sections, and what fill in the leading portion is Semen Granati or quartz sand; What back segment was filled is gac, preferably uses 20～60 purpose gacs, and corresponding particle size range is 250～840 microns.Seawater through the water storage unit that having three grade of first filtering unit, iron trichloride flocculation agent and handle, comprise Semen Granati and 20～60 order gacs the processing of second filtering unit after, ratio of desalinization can be greater than more than 42%.Through after having second filtering unit of Pyatyi, the seawater water source of saltiness 24～35g/L (grams per liter), water outlet saltiness≤500mg/L (mg/litre) reaches drinking water standard.
Sea water desalinating plant provided by the invention, the mouth of pipe of blow-off pipe is lower than the water outlet of second filtering unit, and be provided with the water storage unit, when the filtration resistance of first filtering unit reaches certain degree, the seawater that comes from water reservoir still enters first filtering unit with same speed, sea level fluctuations in first filtering unit will rise, syphonic effect when exceeding the turn of bilge of blow-off pipe, the sea level fluctuations in first filtering unit then takes place, the water that comes from the water storage unit will be to carrying out back flushing first filtering unit, reach the effect that first filtering unit is oppositely cleaned, the filtration resistance of the filtering unit of winning is significantly reduced, after water in the water storage unit uses up, then the water that comes from water reservoir passes through first filtering unit again, filters.With respect to prior art, the present invention need not that the conventional energy just can be finished filtration automatically and to the back flushing of first filtering unit, can save energy.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (16)
1, a kind of sea water desalinating plant, it is characterized in that, comprise water reservoir, first filtering unit, the water storage unit, second filtering unit and blow-off pipe, described water reservoir, first filtering unit, the water storage unit, second filtering unit is communicated with successively, the leading section of described first filtering unit is communicated with blow-off pipe, the water outlet of described blow-off pipe is lower than the water outlet of described second filtering unit, described blow-off pipe has turn of bilge, the unitary bottom of described water storage is higher than the water outlet of described second filtering unit, described water reservoir is in the highest point of sea water desalinating plant, the leading section of described first filtering unit is that first filtering unit effectively filters the position before the position, and the turn of bilge of described blow-off pipe is higher than the unitary bottom of water storage and is higher than the water storage unit and the high-order bit of the interconnecting part of second filtering unit.
2, sea water desalinating plant according to claim 1 is characterized in that, between the described water reservoir and first filtering unit valve is arranged.
3, sea water desalinating plant according to claim 1 is characterized in that, is filled with the filtration filtrate in described first filtering unit.
4, sea water desalinating plant according to claim 3 is characterized in that, described filtration filtrate is the mixture of zeolite, Attapulgite stone flour, diatomite and polymerize aluminum chloride.
5, sea water desalinating plant according to claim 3 is characterized in that, described filtration filtrate is the mixture of zeolite, Attapulgite stone flour, diatomite and iron(ic) chloride.
According to claim 4 or 5 described sea water desalinating plants, it is characterized in that 6, the particle diameter of described zeolite is 104～840 microns.
According to claim 4 or 5 described sea water desalinating plants, it is characterized in that 7, described zeolite, Attapulgite stone flour and diatomaceous weight ratio are 18～22: 18～22: 9～11.
8, sea water desalinating plant according to claim 1 is characterized in that, described first filtering unit is divided into more than two sections or two sections, and each Duan Zhongjun of described first filtering unit is filled with the filtration filtrate; For per two sections, be the last period near a section of the first filtering unit leading section, another section is back one section, the particle diameter of the filtration filtrate in the last period is greater than the particle diameter of the filtration filtrate in back a section.
9, sea water desalinating plant according to claim 1, it is characterized in that, described first filtering unit is divided into three sections, be respectively first section, second section and the 3rd section from the leading section of first filtering unit, all be filled with the filtration filtrate in described first section, second section and the 3rd section, the particle diameter of described filtration filtrate is respectively: 420～840 microns, 150～178 microns and 104～124 microns.
10, sea water desalinating plant according to claim 1, it is characterized in that, described first filtering unit is to be filled with first pipeline that filters filtrate, there is one to keep sleeve pipe on the top of described first pipeline, have the hole on described at least one face of keeping in telescopic side or the end face, described keeping has ball float in the sleeve pipe, described ball float can not pass through described hole, in the outside of described first pipeline second pipeline is arranged, described second pipeline respectively with described telescopic bottom and described first pipe connection kept, described ball float can not by second pipeline with keep junction bottom the telescopic.
11, sea water desalinating plant according to claim 10 is characterized in that, the described sleeve pipe of keeping is a turbination.
12, sea water desalinating plant according to claim 10 is characterized in that, described ball float is hollow rubber ball or baton round.
13, sea water desalinating plant according to claim 1 is characterized in that, described water storage unit is communicated with the device that flocculation agent is housed.
14, sea water desalinating plant according to claim 14 is characterized in that, described flocculation agent is an iron trichloride.
15, sea water desalinating plant according to claim 1 is characterized in that, there is topping-up pump described water storage unit between the water outlet of described second filtering unit.
16, sea water desalinating plant according to claim 1 is characterized in that, described second filtering unit is divided into more than two sections or two sections, and each Duan Zhongjun of described second filtering unit is filled with the filtration filtrate; For per two sections, be the last period near a section of the second filtering unit leading section, another section is back one section, the particle diameter of the filtration filtrate in the last period is greater than the particle diameter of the filtration filtrate in back a section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101674256A CN101684024B (en) | 2008-09-26 | 2008-09-26 | Seawater desalinating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101674256A CN101684024B (en) | 2008-09-26 | 2008-09-26 | Seawater desalinating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101684024A true CN101684024A (en) | 2010-03-31 |
| CN101684024B CN101684024B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101674256A Expired - Fee Related CN101684024B (en) | 2008-09-26 | 2008-09-26 | Seawater desalinating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116239272A (en) * | 2023-05-11 | 2023-06-09 | 广州唯友斯工程机械配件有限公司 | Marine high-power desalination equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411049A1 (en) * | 1994-03-30 | 1995-10-05 | Nord Systemtechnik | Desalination of water with zeolite(s) |
| JP3045378B2 (en) | 1996-08-28 | 2000-05-29 | インスティテュト ゲオヒミイ イ アナリティチェスコイ ヒミイ イエム．フ．イ．ベルナドスコゴ ラン（ゲオヒ ラン） | Method for combined treatment of seawater |
| CN100503455C (en) * | 2007-03-29 | 2009-06-24 | 陶韬 | Natural mineral seawater desalination purification filter |
| CN101121556A (en) * | 2007-08-17 | 2008-02-13 | 周奇迪 | Sea water desalting apparatus |
-
2008
- 2008-09-26 CN CN2008101674256A patent/CN101684024B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116239272A (en) * | 2023-05-11 | 2023-06-09 | 广州唯友斯工程机械配件有限公司 | Marine high-power desalination equipment |
| CN116239272B (en) * | 2023-05-11 | 2023-07-21 | 广州唯友斯工程机械配件有限公司 | Marine high-power desalination equipment |
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| CN101684024B (en) | 2011-08-31 |
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Effective date of registration: 20150520 Address after: 315324 Zhejiang city of Ningbo province Cixi city Zhouxiang Town West Community Barbara West week Patentee after: Zhou Chengcheng Address before: 315324 No. 18 Town West Road, Cixi, Zhejiang, Zhouxiang Patentee before: Zhou Qidi |
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