CN202492434U - Micro-pollution raw water purification system - Google Patents

Micro-pollution raw water purification system Download PDF

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Publication number
CN202492434U
CN202492434U CN2012200249379U CN201220024937U CN202492434U CN 202492434 U CN202492434 U CN 202492434U CN 2012200249379 U CN2012200249379 U CN 2012200249379U CN 201220024937 U CN201220024937 U CN 201220024937U CN 202492434 U CN202492434 U CN 202492434U
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China
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water
subpool
micro
reverse osmosis
purification system
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CN2012200249379U
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李浩隆
牟永敏
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HEFEI DEAN WATER TREATMENT EQUIPMENT CO Ltd
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HEFEI DEAN WATER TREATMENT EQUIPMENT CO Ltd
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Abstract

The utility model relates to a micro-pollution raw water purification system. The micro-pollution raw water purification system comprises a stripping oil separation tank, a coagulative precipitation tank, a coagulation dosing device, a first intermediate water tank, a feed pump, an aeration biological filter, a secondary intermediate water tank, a coagulation dosing unit, a filtration lift pump, a multi-medium filter, a manganese sand filter, an active carbon filter, an acid dosing device, a scale inhibitor dosing device, a mixer, a reverse osmosis device, an alkali dosing device, a disinfection device and an ultraviolet sterilization device. The micro-pollution raw water purification system has the advantages that firstly key pollutants are emphatically removed, a reverse osmosis technology is used for supplying safety control, the reverse osmosis pretreatment design is reasonable so that the system is safe and stable in running, the occurrence frequency of dirt blocking is greatly reduced, the period of chemical cleaning is greatly prolonged, the recovery utilization rate of water is up to 75%, and the micro-pollution raw water purification system can be applied to drinking water treatment occasions such as municipal works, villages, industrial enterprises and mine fields or occasions reusing recycled water needing to be deeply treated.

Description

A kind of micro-polluted raw purification system
Technical field
The utility model relates to water treatment water purification field, relates in particular to a kind of water, surface water, pit water under micro-polluted are purified and is the micro-polluted raw purification system of Drinking Water.
Background technology
The pollution that socioeconomic fast development, water resources suffer is also more and more serious, and especially drinking water pollution is particularly outstanding, and human daily life water safety receives more and more serious threat.In the area that some water resourcess lack; The area that remote districts, Rural areas and the water source that particularly economy is backward relatively polluted; Because the choosing, carry of good water sources needs a large amount of investments, local people and government be unable to bear this investment, and the people use behind surface water or the direct or simple clarification disinfecting of exploiting groundwater as Drinking Water in a large number; And the also unprocessed direct random discharging of sewage, a large amount of uses of rural area agricultural chemicals all bring surface water and phreatic pollution.Mining site generally all is positioned at mountain area or remote districts, does not have the water source supply of living on one's own life, and is basically to supply with use after adopting underground water or pit water simple process.These Drinking Waters of taking supply mode all are unsafe, have brought potential harm to the user is healthy.
The technological design of existing various micro-polluted raw purification techniques is single relatively, can not fully ensure the ability that the qualified tap water of safety is provided for the former water that source of pollution become increasingly complex, pollutant kind is more and more, the Pollutant levels fluctuation range is bigger.
The Application of membrane band revolution of water technology, but the membrane technique widespread use also shows the deficiency that exists in the method for use gradually, all is pressed in the removal of all contaminations load on ultrafiltration, nanofiltration, the reverse osmosis membrane; The pretreatment technology design can not be satisfied film fully and handle the water inlet requirement; And the impact that fluctuation brings for raw water quality does not possess adaptive faculty, and this dirt that has increased the weight of film is stifled, and has caused the water purification cost to increase; And the water cleaning systems fluctuation of service, water utilization rate is low.
The utility model content
In view of this; The utility model is necessary to provide a kind of stable, micro-polluted raw purification system that performance is preferable; It is to water, surface water, pit water under micro-polluted; Especially receive organism, nitrogen, phosphorus, hydrogen sulfide, iron, manganese, fluorochemical, petroleum-type pollution and the bigger former water of total hardness and carry out the technology that purifying treatment is a tap water, can be the user tap water that meets national hygiene standard for drinking water is provided.
Solving the problems of the technologies described above the technical scheme that is adopted is: a kind of micro-polluted raw purification system; It comprises the stripping oil trap; Coagulative precipitation tank; The coagulation dosing device; First intermediate pool; Service pump; BAF; Second intermediate pool; Flocculation dosing unit; Filter lift pump; More medium filter; The filtration with manganese sand device; Activated charcoal filter; The acid chemicals dosing plant; The Scale inhibitors chemicals dosing plant; Mixing tank; Reverse osmosis unit; The alkali chemicals dosing plant; Sterilizing unit; Produce water tank and the ultraviolet bacterium device that disappears; Wherein
Said stripping oil trap receives micro-polluted raw and communicates with said coagulative precipitation tank; Said coagulation dosing unit is connected with said coagulative precipitation tank; Said first intermediate pool communicates with said coagulative precipitation tank; Said first intermediate pool communicates with the bottom of said BAF through said service pump; Said BAF communicates with said second intermediate pool and is connected with said sterilizing unit, and said second intermediate pool communicates with the top of said more medium filter through said filtration lift pump, and said flocculation dosing unit is connected between said second intermediate pool and the said filtration lift pump; Said more medium filter communicates with said filtration with manganese sand device; Said filtration with manganese sand device communicates with said activated charcoal filter, and said activated charcoal filter communicates with said reverse osmosis unit, and said sour chemicals dosing plant, said Scale inhibitors chemicals dosing plant all are connected between said activated charcoal filter and the said reverse osmosis unit; Said mixing tank is installed in saidly to be stated between activated charcoal filter and the said reverse osmosis unit and is right after after said sour chemicals dosing plant and said Scale inhibitors chemicals dosing plant; Said reverse osmosis unit also is connected in said alkali chemicals dosing plant, said sterilizing unit, and said reverse osmosis unit communicates with said product water tank, and said product water tank and the said ultraviolet bacterium device that disappears is connected.
Further improvement as such scheme; Said stripping oil trap is separated into first subpool, second subpool and rectification subpool successively, offers first channel between said first subpool and said second subpool, and the bottom between said second subpool and the said rectification subpool offers second passage; Be provided with water distributor, pre-exposure tracheae and mud drainage slot in said first subpool; Be provided with some swash plates that are parallel to each other and oil scupper in said second subpool, wherein
Said mud drainage slot and said pre-exposure tracheae are distributed in the bottom in said first subpool; Said water distributor is evenly distributed on the body bottom, pond in said first subpool; Said some swash plates evenly spaced apart in said second subpool the middle part and be positioned under the said first channel; Said some swash plates favour the wall of said second subpool, and said first channel and said second passage be positioned at the two ends of said some swash plates, and said oil scupper is arranged on the top of said second subpool.
Further improvement as such scheme; The coagulating agent mixed aeration pipe that the top of said coagulative precipitation tank is provided with the water inlet of the water outlet that is used to receive said stripping oil trap and is used for being connected with said coagulation dosing unit; The bottom of said coagulative precipitation tank is provided with mud drainage slot, and said coagulative precipitation tank is separated into some flocculation reaction subpools, rectification subpool and deposition subpool successively, wherein; The middle part of each flocculation reaction subpool is provided with the flocculation reaction case; Said rectification subpool is provided with the partition wall perpendicular to its bottom, and said partition wall is divided into two parts with the lower section of said rectification subpool, and the top of said deposition subpool is provided with water leg; The middle part of said deposition subpool is provided with evenly some swash plates spaced apart, and the bottom of said deposition subpool is set to water distributing area.
Further improvement as such scheme; Following three zones during said BAF is arranged to; Said lower area is water distributing area and is provided with water distributor in the bottom; The zone is provided with microporous aeration device in said for biological packing area and in the bottom, and the said zone of going up is for receiving the pool and being provided with water leg at the top.
As the further improvement of such scheme, said micro-polluted raw purification system also comprises air-blast device, and said air-blast device all is connected with said stripping oil trap, said coagulative precipitation tank and said BAF.
As the further improvement of such scheme, said air-blast device adopts gas blower or the backwash blower fan that all communicates with said stripping oil trap, said coagulative precipitation tank and said BAF.
Further improvement as such scheme; Said micro-polluted raw purification system also comprises the high-order dense water tank that communicates with said reverse osmosis unit; The height of the dense water tank of a said high position is greater than the height of said more medium filter, said filtration with manganese sand device, said activated charcoal filter, and said elevated tank all is connected with said more medium filter, said filtration with manganese sand device, said activated charcoal filter.
Further improvement as such scheme; Said micro-polluted raw purification system also comprises the chemically-cleaning device that is used for the reverse-osmosis membrane element of said reverse osmosis unit is carried out matting; Said chemically-cleaning device comprises matting water tank, flushing water pump and filter rinsed; Said matting water tank adopts the isolating fresh water of said reverse osmosis unit to prepare matting solution; Said flushing water pump promotes in said cleaning solution to the said filter rinsed in the said cleaning water tank, and said strainer is connected in the cleaning inlet of said reverse osmosis unit.
Further improvement as such scheme; Said reverse osmosis unit comprises security personnel strainer, HPP and reverse osmosis membrane assembly; Said security personnel's strainer is connected with said mixing tank; Said reverse osmosis membrane assembly is connected with said product water tank, and said HPP is connected between said security personnel's strainer and the said reverse osmosis membrane assembly.
As the further improvement of such scheme, also be connected with the backwash water pump between said second intermediate pool and the said BAF.
Compared with prior art, the advantage of the micro-polluted raw purification system that the utility model provides is: technical process is equipped with rationally, and the impact adaptive faculty that raw water quality is changed is strong; The process combination science is removed principal pollutant elder generation emphasis, passes through reverse osmosis technology again as safety control; And r-o-pre-treatment design fully, makes the whole system operating safety stable, greatly reduces dirty stifled phenomenon occurrence frequency; The matting cycle is prolonged greatly, and the water recovery utilization rate is up to 75%.That this Technology is accomplished is energy-conservation, economize on water, be easy to robotization control, applicable to municipal administration, rural area, industrial enterprise, mining site drinking water treatment occasion or need the middle water reuse occasion of advanced treatment.
Description of drawings
The structural representation of the micro-polluted raw purification system that Fig. 1 provides for the utility model preferred embodiments.
Fig. 2 is the schema of the micro-polluted raw purifying method of micro-polluted raw purification system among Fig. 1.
Fig. 3 is the stripping oil trap of micro-polluted raw purification system among Fig. 1 and the structural representation of coagulative precipitation tank.
Fig. 4 is the structural representation of the BAF of micro-polluted raw purification system among Fig. 1.
Fig. 5 is the structural representation of the pretreatment filters (more medium filter, filtration with manganese sand device, activated charcoal filter) of micro-polluted raw purification system among Fig. 1.
Fig. 6 is the structural representation of the reverse osmosis unit of micro-polluted raw purification system among Fig. 1.
Fig. 7 is the structural representation of the chemically-cleaning device of micro-polluted raw purification system among Fig. 1.
Nomenclature
Stripping oil trap 10
Coagulative precipitation tank 20
Coagulation dosing unit 30
First intermediate pool 31
Service pump 32
BAF 40
Second intermediate pool 33
Flocculation dosing unit 34
Filter lift pump 35
More medium filter 36
Filtration with manganese sand device 37
Activated charcoal filter 38
Acid chemicals dosing plant 39
Scale inhibitors chemicals dosing plant 310
Mixing tank 311
Reverse osmosis unit 50
Sterilizing unit 313
Alkali chemicals dosing plant 312
Air-blast device 314
Chemically-cleaning device 60
Produce water tank 70
Ultraviolet sterilization apparatus 315
First subpool 12
Second subpool 14
Rectification subpool 16
First channel 120
Second passage 140
Water distributor 121
Mud drainage slot 123
Swash plate 141,253
Oil scupper 142,22
Water inlet 21
Flocculation reaction subpool 23
Rectification subpool 24
Deposition subpool 25
Flocculation reaction case 230
Partition wall 240
Water leg 251,410
Water distributing area 255
Last zone 41
Middle zone 42
Lower area 43
Under filter cap 430
Filter bar 431
Upward filtration cap 432
Filter plate 433
Distribution endless tube 435
Single hole menbrane aerator 436
Security personnel's strainer 51
HPP 52
Reverse osmosis membrane assembly 53
High-order dense water tank 90
Backwashing pump 432
Matting water tank 61
Flushing water pump 62
Filter rinsed 63
Working shaft 80
Clean inlet A
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Please consult Fig. 1 and Fig. 2 in the lump, the structural representation of the micro-polluted raw purification system that it provides for the utility model preferred embodiments.The micro-polluted raw purification system is to water, surface water, pit water under micro-polluted; Especially receive organism, nitrogen, phosphorus, hydrogen sulfide, iron, manganese, fluorochemical, petroleum-type pollution and the bigger former water of total hardness and carry out the technology that purifying treatment is a tap water, can be the user tap water that meets national hygiene standard for drinking water is provided.
The micro-polluted raw purification system comprises stripping oil trap 10; Coagulative precipitation tank 20; Coagulation dosing unit 30; First intermediate pool 31; Service pump 32; BAF 40; Second intermediate pool 33; Flocculation dosing unit 34; Filter lift pump 35; More medium filter 36; Filtration with manganese sand device 37; Activated charcoal filter 38; Acid chemicals dosing plant 39; Scale inhibitors chemicals dosing plant 310; Mixing tank 311; Reverse osmosis unit 50; Alkali chemicals dosing plant 312; Sterilizing unit 313; Air-blast device 314; Chemically-cleaning device 60; Produce water tank 70 and ultraviolet sterilization apparatus 315.
Stripping oil trap 10 is used for the non-oil in water emulsion of micro-polluted raw is separated from said micro-polluted raw; Coagulative precipitation tank 20 is used for pathogeny biology, colloid, the Fe with the water outlet of stripping oil trap 10 3+, suspended substance is gathered into flocs unit and therefrom separates the phosphorus in the said flocs unit planar water under the flocculation of coagulating agent, bridging action; First intermediate pool 31 is used to cushion the water outlet of coagulative precipitation tank 20; Service pump 32 is used to promote the water outlet of first intermediate pool 31 and makes its bottom from BAF 40 get into BAF 40; BAF 40 is used to carry out microvesicle aeration, biological degradation, adsorption and oxidation filtration; Second intermediate pool 33 is used to cushion the water outlet of BAF 40; Filtering the water outlet that lift pump 35 is used to promote second intermediate pool 33 gets into its top from more medium filter 36; Flocculation dosing unit 34 is used for flocculation agent is added in the water outlet of second intermediate pool 33; More medium filter 36 is used for suspended substance, the colloid of the water outlet of filtering second intermediate pool 33; Filtration with manganese sand device 37 is used for reducing manganese, the iron ion content of the water outlet of more medium filter 36; Activated charcoal filter 38 is used for reaching reverse osmosis unit 50 influent quality requirements after chlorine residue is removed in impurity such as the peculiar smell, colourity, organism of the water outlet of adsorption filtration filtration with manganese sand device 37 and reduction; Acid chemicals dosing plant 39 is used to reduce the pH value of the water outlet of activated charcoal filter 38; Scale inhibitors chemicals dosing plant 310 is used for adding Scale inhibitors in the water outlet of activated charcoal filter 38; Mixing tank 311 is used in the water outlet of activated charcoal filter 38 sour chemicals dosing plant 39 being mixed with the medicine that Scale inhibitors chemicals dosing plant 310 adds; Reverse osmosis unit 50 is used for separating inorganic salt, residual organic substances, ammonia nitrogen (the ionic state NH of the water outlet of tackling activated charcoal filter 38 4 +), impurity such as total nitrogen, total phosphorus; Alkali chemicals dosing plant 312 is used to improve the suitable pH value of pH value to human body of the water outlet of reverse osmosis unit 50; The water outlet of sterilizing unit 313 and 315 pairs of reverse osmosis units 50 of the ultraviolet sterilization apparatus sterilization that carries out disinfection forms domestic water; Air-blast device 314 is used to send into the bottom of air to stripping oil trap 10, the bottom of coagulative precipitation tank 20 and the middle part of BAF 40; In this embodiment, air-blast device 314 adopts all gas blower or the backwash blower fan that communicates with the middle part of the bottom of the bottom of stripping oil trap 10, coagulative precipitation tank 20 and BAF 40; Chemically-cleaning device 60 utilizes the water outlet of reverse osmosis unit 50 that BAF 40, more medium filter 36, filtration with manganese sand device 37, activated charcoal filter 38 are washed.
Please combine Fig. 3, stripping oil trap 10 is separated into first subpool 12, second subpool 14 and rectification subpool 16 successively.Offer between first subpool 12 and second subpool 14 and make first channel 120, the second subpools 14 that first subpool 12 communicates with second subpool 14 offer the second passage 140 that second subpool 14 is communicated with rectification subpool 16 with bottom between the rectification subpool 16.Be provided with in first subpool 12 in water distributor 121 and mud drainage slot 123, the second subpools 14 and be provided with some swash plates that are parallel to each other 141 and oil scupper 142.Mud drainage slot 142 is distributed in the bottom in first subpool 12, is used for getting rid of said micro-polluted raw sedimentary foreign material in first subpool 12; Water distributor 121 is evenly distributed on the body bottom, pond in first subpool 12; Be used for said micro-polluted raw is uniformly distributed in first subpool 12; The bottom of said first subpool also is provided with pre-exposure tracheae (figure does not show), and said preaeration pipe is used for said micro-polluted raw is carried out preaeration; Swash plate 141 evenly spaced apart in second subpool 14 the middle part and be positioned at first channel 120 times; Swash plate 141 favours the wall of second subpool 14; And first channel 120 and second passage 140 are positioned at the two ends of swash plate 141, and swash plate 141 is used for the non-oil in water emulsion of said micro-polluted raw is separated from said micro-polluted raw; Oil scupper 142 is arranged on the top of second subpool 14, and oil scupper 142 opens and shuts off through draining valve control.
Said micro-polluted raw is removed sandstone through the eddy flow grit water separator earlier from elevated the back by drowned pump, sends into high-order raw water box and stores up temporarily.Raw water box water outlet flow by gravity is gone into stripping oil trap 12; Wherein be uniformly distributed in the body bottom, pond of first subpool 12 by water distributor 121; Earlier former water is carried out preaeration, when pending water flowed into last part technology through swash plate 141, swash plate 141 layered structuries and aeration effect made the non-oil in water emulsion in the water more be prone to desorption and from water, separate; The elaioleucite that gathers utilizes buoyancy to be collected to the water surface along moving on the swash plate face, forms oil slick.Oil slick is regularly opened draining valve by operator and is got rid of from oil scupper 142.The pending water of process oil removing carries out oxidation with some reducing substanceses in the water under the effect of preaeration, play certain effect of coagulating that helps.Like Fe 2+Be oxidized to Fe 3+↓ colloid is removed it through follow-up depositing technology again.The stripping effect of preaeration can be with hydrogen sulfide removal.
The top of coagulative precipitation tank 20 is provided with water inlet 21; Water inlet 21 is used to receive the water outlet of the rectification subpool 16 of stripping oil trap 10; The bottom of coagulative precipitation tank 20 is provided with mud drainage slot 22, and coagulative precipitation tank 20 is separated into some flocculation reaction subpools 23 (in this embodiment be that example carry out illustrated in greater detail with three flocculation reaction subpools 23), rectification subpool 24 and deposition subpool 25 successively.
The middle part of each flocculation reaction subpool 23 is provided with flocculation reaction case 230, and rectification subpool 24 is provided with the partition wall 240 perpendicular to its bottom, and partition wall 240 is divided into two parts with the lower section of rectification subpool 24.The top of deposition subpool 25 is provided with water leg 251, and the middle part of deposition subpool 25 is provided with evenly some swash plates 253 spaced apart, and the bottom of deposition subpool 25 is set to water distributing area 255.The water outlet of stripping oil trap 10 gets in the flocculation reaction subpool 23 through water inlet 21 carries out flocculation reaction, gets into rectification subpool 24 again and carries out rectification buffering, uniform water distribution, gets into deposition subpool 25 at last and carries out mud-water separation.
The pending water (being the water outlet of stripping oil trap 10) of removing oils flows into grid reaction pond (being coagulative precipitation tank 20) certainly; In the first segment mesh pond (is flocculation reaction subpool 23; With the second following segment mesh pond, the 3rd segment mesh pond) in agitaion mixes by the air bubble that blasts (utilizing air-blast device 314) with the coagulating agent of coagulation dosing unit 30 inputs; Again from flowing through second section and the 3rd segment mesh; Under the waterpower turbulent flow condition of setting, the pathogeny biology in the pending water, colloid, Fe 3+, suspended substance is gathered into the macrobead flocs unit under the flocculation of coagulating agent, bridging action, the phosphorus in flocs unit and the planar water is distributed in tube settler water distribution zone (promptly precipitating the water distributing area 255 of subpool 25) uniformly after the rectification canal is regulated waterpower.The flocs unit of this moment has formed fine and close macrobead; Proportion is bigger, when pending water is upwards flowed through inclined tube (being swash plate 253), because flocs unit is under action of gravity; And because the inclined tube structure forms extremely short waterpower settling height and enough low waterpower upflow velocity; Make flocs unit more be prone to, be prone to the fast inclined tube surface that falls to, slide to the mud drainage slot 22 at the bottom of the pond again along the inclined tube surface, regularly by outside the manual work discharge pond.The primary water of having removed most suspended substance, total phosphorus and part iron, manganese then upwards is collected to clear water zone (promptly precipitating the top of subpool 25), after water leg 251 is collected, flows into first intermediate pool 31.Reduce to below the 10NTU through clarifying pending water chaotic degree.
In this embodiment, the some swash plates 141 in the stripping oil trap 10 and structure, the shape of the some swash plates 253 in the coagulative precipitation tank 20 are basic identical, and its difference is: thickness between the two, some difference of spacing.Generally, some swash plates 141 thickness ranges in the stripping oil trap 10 are: 1~2mm, and the distance between plates scope is: 35~100mm; The thickness range of the some swash plates 253 in the coagulative precipitation tank 20 is: 0.5~2.0mm, the distance between plates scope is: 25~50mm.In other embodiments, swash plate 253 can also adopt the hexagon cellular inclined tube.
Please combine Fig. 4; Following three zones 41,42,43 during BAF 40 is arranged to; Lower area 43 is provided with water distributor (figure does not show) for water distributing area and in the bottom; Middle zone 42 is provided with microporous aeration device for biological packing area and in the bottom, last zone 41 is provided with water leg 410 for the receipts pool and at the top.The pending water of first intermediate pool 31 promotes through BAF service pump (being service pump 32) and gets into from BAF 40 bottoms; Distribute following filter cap 430, filter bar 431, upward filtration cap 432, the filter plate 433 that upwards passes through said microporous aeration device from water distributing area successively through said water distributor, get into the biologic packing material district then.Bottom in the biologic packing material district; The air that air-blast device 314 is sent into carries out the microvesicle aeration for each single hole menbrane aerator 436 through 435 uniformly distributings of distribution endless tube; Airborne oxygen is dissolved in the pending water efficiently; On biologic packing material, enclose a large amount of mikrobes admittedly, organism in the pending water of nationality and oxygen carry out metabolism and the breeding of self, have a kind of nitrifier in this biological flora simultaneously; With nitrated one-tenth nitrate salt of the ammonia nitrogen in the pending water or nitrite, thereby make pending water obtain biological degradation and purify; Biological flora also plays solid phosphorus effect simultaneously.Competent oxygen amount also can be carried out oxidation with the iron in the pending water, manganese in the BAF 40, generates the insolubles colloid of iron, manganese and is tackled by filtrate.The pore texture that the biologic packing material district forms and the adsorption of filter material surface can be tackled the suspended substance in the pending water, can reduce the opacity in the water outlet.Impurity such as suspended substance of tackling in the bacteria bed and deactivated mikrobe corpse then mix flushing by regular BAF 40 air waters discharges outside the pond, makes bacteria bed recover to cut dirty function.Up-flow pending waterborne through purifying goes into to receive the pool, collects from flowing into second intermediate pool 33 through water leg 410.
Please combine Fig. 5; The pending water of second intermediate pool 33 is through filtering lift pump 35 to 0.35~0.45MPa; And go into more medium filter 36 tops after utilizing flocculation dosing unit 34 to add flocculation agent (PAC) and sterilizing unit 313 adding sterilizing agents; Suspended substance, colloid in the pending water of filter bed filtering of hard coal and silica sand composition, the filter bottom water outlet gets into filtration with manganese sand device 37, and (manganese content is (with MnO to utilize natural manganese sand 2Meter) be not less than 35% natural manganese sand filtrate) the filter bed catalysed oxidn formed; Further reduce manganese, iron ion content in the pending water; Pending water behind demanganization, the iron gets into activated charcoal filter 38, reaches reverse osmosis unit 50 influent qualities after impurity such as the peculiar smell in the pending water of adsorption filtration, colourity, organism and the reduction removal chlorine residue and requires---SDI 15<4.The pressure difference of stopping up filter bed to water-in and water outlet when the foul of each strainer interception reaches 0.03~0.05Mpa or effluent quality should switch the backwash that respective valves is carried out filter bed when defective.
Please combine Fig. 6, reverse osmosis unit 50 comprises security personnel's strainer 51, HPP 52 and the reverse osmosis membrane assembly 53 that connects successively.Activated charcoal filter 38 water outlet nationality overbottom pressure (0.25~0.35MPa) and the hydrochloric acid that adds with medicine system (being sour chemicals dosing plant 39, Scale inhibitors chemicals dosing plant 310) and Scale inhibitors security personnel's strainer 51 of after line mixer 311 mixes, getting into reverse osmosis unit 50; Hold back the granule foreign that possibly cause damage to the reverse osmosis membrane of reverse osmosis membrane assembly 53, security personnel's strainer 51 filter element filtering precision are 1um~5um; 51 water outlets of security personnel's strainer get into reverse osmosis membrane assembly 53 after HPP 52 boosts to 0.8~1.7MPa, the separation of the reverse osmosis membrane of process reverse osmosis membrane assembly 53, the most of inorganic salt in the pending water, residual organic substances, ammonia nitrogen (ionic state NH 4 +), impurity such as total nitrogen, total phosphorus all separate by interception; Only contain a spot of inorganic salt etc. and see through in the pure water (accounting for pending water~75%) of reverse osmosis membrane; Through alkali chemicals dosing plant 312 add alkali regulate pH to human body suitable about 7.3 after; Add sterilizing agent through sterilizing unit 313 again and carry out disinfection, final specification product water (water-quality guideline is superior to " drinking water sanitary standard " GB5749-2006) flows in the stainless steel product water tank 70 and stores.Produce water tank 70 and the disinfection reactions time is provided.Product water flows into ultraviolet sterilizer 315 through rising pipe and sterilizes once more, guarantees qualified, the water supply security of hygiology index, supplies with the user by working shaft 80 again and uses.
Reverse osmosis concentrated shrink (being the water outlet of reverse osmosis unit 50) utilizes higher surplus pressure to send into high-order dense water tank 90; Partly water (accounting for pending flooding quantity~25%) water quality is limpid for this; Opacity is lower than 1NTU; Remain the more excellent clear water of quality, can be with its backwash water source as pre-treatment tertiary filter (being more medium filter 36, filtration with manganese sand device 37, activated charcoal filter 38).High-order dense water tank 90 highly satisfies the required head of filter backwash, and (0.1~0.2MPa), volume satisfies 10~15 minutes required water yields of a strainer back flushing at least.The pre-treatment tertiary filter all adopts air water to mix the mode of cleaning, and the backwash source of the gas is provided by BAF 40 backwash blower fans.BAF 40 can be washed through BAF backwashing pump 432 by second intermediate pool 33, also can utilize reverse osmosis concentrated shrink to wash.
Please combine Fig. 7, when reverse osmosis unit 50 reaches the condition that needs matting (such as, the water production rate of device descended 5~10% o'clock than first or last cleaning back; When doubling after the salt transmitance of device was cleaned than first or last time; During the difference of pressure difference or pressure difference of installing each section 1~1.5 times after for first or last the cleaning; The device operation is in the time of 3-4 month; Device is before the long-term row of stopping transport is with the formaldehyde solution protection etc.), should utilize 60 pairs of reverse osmosis units of chemically-cleaning device 50 to carry out matting.Chemically-cleaning device 60 comprises matting water tank 61, flushing water pump 62 and filter rinsed 63; Matting water tank 62 adopts reverse osmosis unit 50 isolating fresh water to prepare matting solution; In cleaning solution to the filter rinsed 63 that flushing water pump 62 promotes in the matting water tank 60, filter rinsed 63 is connected in the cleaning inlet A of reverse osmosis unit 50.
The characteristics of the utility model have:
1, suitable pollutant kind scope is wide; Strong shock resistance to source of pollution; Process combination according to earlier targetedly emphasis remove principal pollutant, strengthen the r-o-preconditioning technique simultaneously, the high efficiency separation ability by the reverse osmosis membrane of reverse osmosis unit 50 makes the qualified water outlet of safety at last;
2, adopt BAF 40 as one of the main purifying treatment of this technology unit, can effectively prevent organism, iron, manganese colloid block up the dirt that follow-up deep purifying unit causes;
3, adopt and to add acid solution to regulate feed water by reverse osmosis pH be 6.0~7.1, increase into dirty substance dissolves degree, gaseous matter in the water such as NH 3Change NH into 4 +, can be removed by reverse osmosis membrane; And add high efficiency scale inhibitor special again, and be dispersed into dirty particulate; Two kinds of medicaments that add can prevent effectively that the dense water side of reverse osmosis concentrated water side, particularly latter end reverse osmosis membrane from producing concentration polarization and the scale effect membrane flux, increase operating pressure, the unfavorable phenomenon of waste electric energy;
4, adopt first aeration stripping inclined plate grease, the technology of coagulating sedimentation is as the pre-treatment of BAF again; Prevent that hydrogen sulfide, oils, arsenic, suspended substance from producing dirty stifled to the bio-carrier of BAF 40; And prevent that it from suppressing microbial growth, reaches chemistry, biological phosphate-eliminating and nitrogen ammonia nitrification simultaneously;
5, reverse osmosis high-pressure pump (being flushing water pump 62) adopts VFC, requires to regulate the best WP of reverse osmosis unit according to different inflow temperatures, water production rate, reaches the saves energy purpose;
6,40 water outlets add sterilant to BAF; Prevent that the mikrobe that contains in BAF 40 water outlets from causing microbial contamination to follow-up filter bed; And through activated charcoal filter 38 chlorine residue is reduced again, prevent that chlorine residue from causing oxidation to destroy to the reverse osmosis membrane of follow-up polyamide compoiste material;
7, collected the backwash water of reverse osmosis concentrated shrink as pretreatment filters (being more medium filter 36, filtration with manganese sand device 37, activated charcoal filter 38); And utilize the big characteristics of reverse osmosis concentrated water overbottom pressure; Can directly dense water be sent into high-order dense water tank 90; The volume of high-order dense water tank 90 is by satisfying 10~15 minutes required water yields of a strainer back flushing at least; High-order dense water tank 90 highly satisfy the required head of filter backwash (0.1~0.2MPa), thus save the filter backwash water pump, realize saving water and energy, practicing thrift the purpose of investment, convenient operating maintenance;
8, this Technology can be carried out the process combination adjustment to the contained pollutant kind of former water, when not containing iron, manganese, hydrogen sulfide, petroleum-type like former water pollutant, can cancel stripping oil trap 10 and filtration with manganese sand device 37;
9, the pre-treatment tertiary filter all adopts air water to mix the mode of cleaning, and makes backwash thoroughly clean more, saves the backwash water loss, and the backwash source of the gas is provided by BAF 40 backwash blower fans.
Application implementation example below in conjunction with this Technology is helped in the Nepal servant hospital domestic water system in China is described in detail the utility model.
Because no surface water is desirable, former water is 200 meters well water that deep-well is got up from the locality, and said engineering influent quality is seen table 1.
Table 1 influent quality
Project name Unit Water inlet Remarks Project name Unit Water inlet Remarks
CODcr mg/L 42.6 Total hardness (in lime carbonate) mg/L 174
Permanganate indices mg/L 15 PH value 6.54
Iron mg/L 13.4 Copper mg/L <0.04
Manganese mg/L 0.81 Zinc mg/L 0.07
Ammonia nitrogen mg/L 40 Vitriol mg/L 4
Petroleum-type mg/L 2.32 Muriate mg/L 5
Total nitrogen mg/L 51.9 Fluorochemical mg/L 0.89
Total phosphorus mg/L 7.83 Arsenic mg/L 0.00674
Selenium mg/L <0.00025 Prussiate mg/L <0.002
Mercury mg/L 0.00054 Nitrate nitrogen (in ammonia) mg/L 0.22
Cadmium mg/L 0.0013 Volatile phenol mg/L <0.002
After the micro-polluted raw purification system and purifying method purification thereof of said engineering water inlet through the utility model, can obtain Pollutant Treatment effect prediction table as shown in table 2.
Table 2 Pollutant Treatment effect prediction table
Figure BDA0000132282480000151
In the operating process of reality, said engineering water inlet makes the Drinking Water that meets " drinking water sanitary standard " GB5749-2006 through (promptly micro-polluted raw purification system and the purifying method thereof through the utility model purifies the back) after the water purification facilities.
Table 3 is seen in this engineering effluent quality and hygienical evaluation report:
Table 3 Hefei City disease prevention and control center's examining report
Figure BDA0000132282480000152
Figure BDA0000132282480000161
Figure BDA0000132282480000171
In sum, the utility model has the advantages that: technical process is equipped with rationally, and the impact adaptive faculty that raw water quality is changed is strong; The process combination science is removed principal pollutant elder generation emphasis, passes through reverse osmosis technology again as safety control; And r-o-pre-treatment design fully, makes the whole system operating safety stable, greatly reduces dirty stifled phenomenon occurrence frequency; The matting cycle is prolonged greatly, and the water recovery utilization rate is up to 75%.That this Technology is accomplished is energy-conservation, economize on water, be easy to robotization control, applicable to municipal administration, rural area, industrial enterprise, mining site drinking water treatment occasion or need the middle water reuse occasion of advanced treatment.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims (10)

1. micro-polluted raw purification system; It is characterized in that; It comprises stripping oil trap, coagulative precipitation tank, coagulation dosing device, first intermediate pool, service pump, BAF, second intermediate pool, flocculation dosing unit, filter lift pump, more medium filter, filtration with manganese sand device, activated charcoal filter, sour chemicals dosing plant, Scale inhibitors chemicals dosing plant, mixing tank, reverse osmosis unit, alkali chemicals dosing plant, sterilizing unit, product water tank and the ultraviolet bacterium device that disappears; Wherein
Said stripping oil trap receives micro-polluted raw and communicates with said coagulative precipitation tank; Said coagulation dosing unit is connected with said coagulative precipitation tank; Said first intermediate pool communicates with said coagulative precipitation tank; Said first intermediate pool communicates with the bottom of said BAF through said service pump; Said BAF communicates with said second intermediate pool and is connected with said sterilizing unit, and said second intermediate pool communicates with the top of said more medium filter through said filtration lift pump, and said flocculation dosing unit is connected between said second intermediate pool and the said filtration lift pump; Said more medium filter communicates with said filtration with manganese sand device; Said filtration with manganese sand device communicates with said activated charcoal filter, and said activated charcoal filter communicates with said reverse osmosis unit, and said sour chemicals dosing plant, said Scale inhibitors chemicals dosing plant all are connected between said activated charcoal filter and the said reverse osmosis unit; Said mixing tank is installed in saidly to be stated between activated charcoal filter and the said reverse osmosis unit and is right after after said sour chemicals dosing plant and said Scale inhibitors chemicals dosing plant; Said reverse osmosis unit also is connected in said alkali chemicals dosing plant, said sterilizing unit, and said reverse osmosis unit communicates with said product water tank, and said product water tank and the said ultraviolet bacterium device that disappears is connected.
2. a kind of micro-polluted raw purification system as claimed in claim 1; It is characterized in that; Said stripping oil trap is separated into first subpool, second subpool and rectification subpool successively, offers first channel between said first subpool and said second subpool, and the bottom between said second subpool and the said rectification subpool offers second passage; Be provided with water distributor, pre-exposure tracheae and mud drainage slot in said first subpool; Be provided with some swash plates that are parallel to each other and oil scupper in said second subpool, wherein
Said mud drainage slot and said pre-exposure tracheae are distributed in the bottom in said first subpool; Said water distributor is evenly distributed on the body bottom, pond in said first subpool; Said some swash plates evenly spaced apart in said second subpool the middle part and be positioned under the said first channel; Said some swash plates favour the wall of said second subpool, and said first channel and said second passage be positioned at the two ends of said some swash plates, and said oil scupper is arranged on the top of said second subpool.
3. a kind of micro-polluted raw purification system as claimed in claim 1; It is characterized in that, the coagulating agent mixed aeration pipe that the top of said coagulative precipitation tank is provided with the water inlet of the water outlet that is used to receive said stripping oil trap and is used for being connected with said coagulation dosing unit, the bottom of said coagulative precipitation tank is provided with mud drainage slot; Said coagulative precipitation tank is separated into some flocculation reaction subpools, rectification subpool and deposition subpool successively; Wherein, the middle part of each flocculation reaction subpool is provided with the flocculation reaction case, and said rectification subpool is provided with the partition wall perpendicular to its bottom; Said partition wall is divided into two parts with the lower section of said rectification subpool; The top of said deposition subpool is provided with water leg, and the middle part of said deposition subpool is provided with evenly some swash plates spaced apart, and the bottom of said deposition subpool is set to water distributing area.
4. a kind of micro-polluted raw purification system as claimed in claim 1; It is characterized in that; Following three zones during said BAF is arranged to; Said lower area is water distributing area and is provided with water distributor in the bottom, said in the zone be provided with microporous aeration device for biological packing area and in the bottom, the said zone of going up is for receiving the pool and being provided with water leg at the top.
5. a kind of micro-polluted raw purification system as claimed in claim 1; It is characterized in that; Said micro-polluted raw purification system also comprises air-blast device, and said air-blast device all is connected with said stripping oil trap, said coagulative precipitation tank and said BAF.
6. a kind of micro-polluted raw purification system as claimed in claim 5 is characterized in that, said air-blast device adopts gas blower or the backwash blower fan that all communicates with said stripping oil trap, said coagulative precipitation tank and said BAF.
7. a kind of micro-polluted raw purification system as claimed in claim 5; It is characterized in that; Said micro-polluted raw purification system also comprises the high-order dense water tank that communicates with said reverse osmosis unit; The height of the dense water tank of a said high position is greater than the height of said more medium filter, said filtration with manganese sand device, said activated charcoal filter, and said elevated tank all is connected with said more medium filter, said filtration with manganese sand device, said activated charcoal filter.
8. a kind of micro-polluted raw purification system as claimed in claim 1; It is characterized in that; Said micro-polluted raw purification system also comprises the chemically-cleaning device that is used for the reverse-osmosis membrane element of said reverse osmosis unit is carried out matting; Said chemically-cleaning device comprises matting water tank, flushing water pump and filter rinsed; Said matting water tank adopts the isolating fresh water of said reverse osmosis unit to prepare matting solution, and said flushing water pump promotes in said cleaning solution to the said filter rinsed in the said matting water tank, and said strainer is connected in the cleaning inlet of said reverse osmosis unit.
9. a kind of micro-polluted raw purification system as claimed in claim 1; It is characterized in that; Said reverse osmosis unit comprises security personnel strainer, HPP and reverse osmosis membrane assembly; Said security personnel's strainer is connected with said mixing tank, and said reverse osmosis membrane assembly is connected with said product water tank, and said HPP is connected between said security personnel's strainer and the said reverse osmosis membrane assembly.
10. a kind of micro-polluted raw purification system as claimed in claim 1 is characterized in that, also is connected with the backwash water pump between said second intermediate pool and the said BAF.
CN2012200249379U 2012-01-19 2012-01-19 Micro-pollution raw water purification system Expired - Fee Related CN202492434U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105944415A (en) * 2016-05-30 2016-09-21 江苏沃尔特环保有限公司 Novel manganese sand filter
CN106116060A (en) * 2016-08-26 2016-11-16 广东水清环保科技有限公司 A kind of electro-coppering zinc-nickel cleans the processing means of waste water
CN109650670A (en) * 2019-01-25 2019-04-19 广州故乡源水处理有限公司 The purification method of septic tank purification system
CN111875182A (en) * 2020-08-07 2020-11-03 南京天河水环境科技有限公司 Micro-polluted water treatment system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105944415A (en) * 2016-05-30 2016-09-21 江苏沃尔特环保有限公司 Novel manganese sand filter
CN106116060A (en) * 2016-08-26 2016-11-16 广东水清环保科技有限公司 A kind of electro-coppering zinc-nickel cleans the processing means of waste water
CN109650670A (en) * 2019-01-25 2019-04-19 广州故乡源水处理有限公司 The purification method of septic tank purification system
CN111875182A (en) * 2020-08-07 2020-11-03 南京天河水环境科技有限公司 Micro-polluted water treatment system
CN111875182B (en) * 2020-08-07 2023-07-04 南京天河水环境科技有限公司 Operation method of micro-polluted water body treatment system

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