CN106587503A - Drinking water combination treatment system and method for treating light-pollution high-turbidity surface water source - Google Patents
Drinking water combination treatment system and method for treating light-pollution high-turbidity surface water source Download PDFInfo
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- CN106587503A CN106587503A CN201611176025.2A CN201611176025A CN106587503A CN 106587503 A CN106587503 A CN 106587503A CN 201611176025 A CN201611176025 A CN 201611176025A CN 106587503 A CN106587503 A CN 106587503A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention discloses a drinking water combination treatment system and a drinking water combination treatment method for treating a light-pollution high-turbidity surface water source. The drinking water combination treatment system comprises a water guiding device, an aeration preliminary sedimentation tank, a rotation grid, a water taking pump, a first mixing reactor, a steady-pressure water distribution well, a flocculating sedimentation basin, a middle pool, a hoisting water pump, a self-cleaning filter, an ultrafiltration device, a second mixing reactor, a clean water basin, an absorbing well, a conveying water pump and a precision filter that are connected sequentially. The drinking water combination treatment system has the advantages of simplicity, economy and reasonability, can achieve the effects of energy conservation, consumption reduction and long-term stable operation, and ensures that product water after treatment can fully meet the relevant standard requirements of drinking water.
Description
Technical field
The present invention relates to drinking water treatment field, more particularly to one kind can process earth's surface drinking water source and be subject to slight dirty
Dye, the drinking water composite processing system of high turbidity water quality's index and method.
Background technology
China is the serious country of a drought and water shortage.Though freshwater resources total amount accounts for 6% of global water resources or so, only secondary
In Brazil, Russia and Canada, occupy the 4th, the world, but per capita water resource, only world average level 1/4,
The 1/5 of the U.S., is the whole world one of poorest country of water resource per capita.Flood and be dispersed in remote districts that deduction is difficult by
Groundwater resources after, the available freshwater resources amount of reality of China is then less, and its distributed pole is unbalanced.
At present, national environmental protection portion issues《China Environmental State Bulletin》Point out：At present whole nation surface water is generally slight
Pollution.Lake, Reservoir Eutrophication problem are very universal.Meanwhile, the Changjiang river, the Yellow River, the Zhujiang River, Song Hua River, Huaihe River, Haihe River, the Liaohe River, Zhejiang
In hundreds of states control section of the big water system monitoring in all rivers ten in Fujian piece river, south-west rivers and inland, I-III classes, IV-V classes and bad V
Class water quality section ratio is respectively 61.0%, 25.3% and 13.7%.Main contamination index is COD, biochemistry on the five need to
Oxygen amount, ammonia nitrogen etc..In recent years data display, in seven big water systems, the Changjiang river, Zhujiang River water quality are relatively good, and the Yellow River and Haihe River are polluted the most
Seriously.Wherein the Changjiang river, the class water quality of Pearl River system I～III respectively reach 88.6% and 84.9%；It is dirty that Yellow River System is generally moderate
Dye, bad five classes water quality is up to 20.5%；Haihe River water system gross contamination is very serious, and bad five classes water quality reaches 40.3%.Actually water
Middle pollutant kind is thousands of, and is continually changing.Its Huanghe water is throughout the year very high containing silt and float in water, in south
River turbidity is very high during rainy season, and silt, suspension content are also very high in water, belongs to by slight pollution, high concentrtion ground
Table drinking water source.
At present conventional water treatment technique is coagulation, precipitation, filtration, sterilization, and such technique is main flow in the whole world
Handling process.Conventional treatment process to go eliminating water in turbidity as main target, by going eliminating water in colloidal particle and after
Continuous sterilization process reaches and the pathogenic bacterium in water, virus and objectionable impurities is effectively removed, by controlling delivery turbidity
Reach the purpose of control water quality residual impurity total amount.Conventional treatment process be so far domestic application most extensively and it is ripe from
Come water treatment technology, the main body handling process that most of all scale above water factories adopt.It is conventional through operative practice for many years
Handling process has been proved to that the processing requirement of most water factories can be met, in particular for source quality preferably, mainly
The water factory for keeping more than the class of surface water III is referred to, the conventional treatment process of operational excellence is proved that Drinking Water can be met to be defended
106 index requests in raw standard, are relatively reasonable feasible handling process.Its limitation is embodied in when source quality is turbid
When degree is high or receives slight pollution, it is difficult to meet the water quality requirement of drinking water, such as the sense organ comfort level in water is required, including face
Color, smelly, taste and mouthfeel etc. are difficult to meet the requirement of drinking water.
The content of the invention
Based on the problems of prior art, it is an object of the invention to provide a kind of process slight pollution high concentrtion earth's surface
The drinking water composite processing system at water source and method, are processed slight pollution high concentrtion surface water by the technique for combining,
The effluent quality after process is set to fully meet potable water guidelines.
The purpose of the present invention is achieved through the following technical solutions：
The embodiment of the present invention provides a kind of drinking water composite processing system for processing slight pollution high concentrtion earth surface water source, its
It is characterised by, the system includes：
Priming device, aeration preliminary sedimentation tank, rotary grate, water pump, the first mixing reactor, voltage stabilizing distribution well, flocculation are heavy
Shallow lake pond, intermediate pool, lift water pump, self-cleaning filter, ultrafiltration apparatus, the second mixing reactor, clear water reserviors, absorbing well, absorption well, defeated
Conveying pump and accurate filter；Wherein,
The priming device is provided with surface water water inlet, the priming device, aeration preliminary sedimentation tank, rotary grate, water pump,
First mixing reactor, voltage stabilizing distribution well, flocculation sedimentation tank, intermediate pool, lifted water pump, self-cleaning filter, ultrafiltration apparatus,
Second mixing reactor, clear water reserviors, absorbing well, absorption well, transportation water pump and accurate filter are sequentially connected with；
The accurate filter is provided with process water outlet pipe.
As seen from the above technical solution provided by the invention, processing system provided in an embodiment of the present invention, the system
Advantage be：
(1) arranging aeration preliminary sedimentation tank on the one hand can be used as the pond of regulating and storing of water treatment system, on the other hand can be with profit
The polluters such as the organic contamination in water, ammonia nitrogen are carried out into biodegradation with the effect of the assimilation and dissimilatiom of microorganism, the 3rd, exposure in pond
The materials such as the low price ferrimanganic in water can be oxidized to high price material by gas, be removed by flocculation sediment.4th, aeration preliminary sedimentation tank profit
The float in water, fine sand particulate matter, part colloidal substance are removed by precipitating with action of gravity.
(2) aeration can improve the dissolved oxygen content in water in aeration preliminary sedimentation tank, microorganism in culture domestication water, can be with
Greatly improve the removal effect of raw water pollutant；The oxidation that can be carried out to reducing substanceses such as the ferrimanganics in raw water simultaneously, will
Low price manganese becomes nontoxic value Mn, oxidizes iron into ferric iron generation flco material and is easier to remove.
(3) intermediate pool is set and directly buffers pond as flocculation sedimentation tank and ultrafiltration, it is ensured that lift water pump lifting
The required water yield, and be that system is continuous in hyperfiltration reverse-rinsing, maintainability cleaning or restorative cleaning as interim buffering pond
Stable operation provides safeguard.
(4) self-cleaning filter is set used as ultrafiltration pre-filtrating equipment, its water consumption is considerably less, fully achieves nobody certainly
Dynamicization is run, and equipment interruption of service rate is very low.
(5) arrange ultrafiltration apparatus as core filter retention processing unit can remove completely antibacterial in water body, virus,
Algae etc., and do not affected by influent quality；Effluent quality is excellent, and microbial safety sex chromosome mosaicism is solved, and ensures drinking-water
Microbial safety.When water quality index such as the turbidity in raw water, microorganisms because the factor such as season, weather has larger fluctuation
When, ultrafiltration membrane system still can stable operation, and can guarantee that effluent quality safety；By hyperfiltration technique and traditional water-purifying process
Reasonably combine, embody advance of the water factory in design concept；Simultaneously water factory can realize the control of full-automation with
Operation, contributes to realizing the management that water factory modernizes.Ultrafiltration apparatus effectively reduce follow-up disinfectant consumption, reduce secondary pollution
Thing.
(6) accurate filter is set used as the final device for trapping for producing water, the secondary pollution in drinking water can be retained
Remove, being that water outlet is qualified provides last guarantee.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to use needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic diagram of processing system provided in an embodiment of the present invention.
Specific embodiment
With reference to the particular content of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to protection scope of the present invention.
As shown in figure 1, the embodiment of the present invention provides a kind of drinking water for processing slight pollution high concentrtion earth surface water source
Composite processing system, the system includes：
Priming device, aeration preliminary sedimentation tank, rotary grate, water pump, the first mixing reactor, voltage stabilizing distribution well, flocculation are heavy
Shallow lake pond, intermediate pool, lift water pump, self-cleaning filter, ultrafiltration apparatus, the second mixing reactor, clear water reserviors, absorbing well, absorption well, defeated
Conveying pump and accurate filter；Wherein,
The priming device is provided with surface water water inlet, the priming device, aeration preliminary sedimentation tank, rotary grate, water pump,
First mixing reactor, voltage stabilizing distribution well, flocculation sedimentation tank, intermediate pool, lifted water pump, self-cleaning filter, ultrafiltration apparatus,
Second mixing reactor, clear water reserviors, absorbing well, absorption well, transportation water pump and accurate filter are sequentially connected with；
The accurate filter is provided with process water outlet pipe, and the process water outlet pipe is connected with aqueduct.
In above-mentioned processing system, priming device is the flume for being provided with thick grid or the aqueduct for being provided with thick grid；Thick lattice
Net can filter grit etc..
In above-mentioned processing system, the aeration preliminary sedimentation tank of setting can effectively degrade having in raw water as aeration and biological pond
Machine thing pollutant, ammonia nitrogen etc.；Can be used as the pond of regulating and storing of system；Can be used as the preformed precipitate pond of system and reaction tank.Aeration
Surface aerator is provided with preliminary sedimentation tank, the dissolved oxygen content of raw water can be improved, beneficial to the pollutant in microbial degradation raw water.
The rotary grate of setting can effectively remove the floating thing in raw water, bulky grain float.
The water pump of setting may be provided in water plant, can adopt centrifugal pump, and raw water can be pressurized, and improve the energy of water
Amount, by pipeline by raw water to feedwater on-site.
Raw water is simultaneously evenly distributed to subsequent processing units by the energy consumption of the voltage stabilizing distribution well abatement raw water of setting, it is ensured that system
The balance of operation.
The flocculation sedimentation tank of setting is adjusted using water conservancy and is sufficiently mixed and using gravity to the float and colloid in raw water
Sedimentation removal is carried out Deng particulate matter.The flocculation sedimentation tank is made up of the flocculation tank and sedimentation tank being sequentially connected with, the precipitation
Using tube settler or inclined-plate clarifying basin, the surface loading of the sedimentation tank is 6～12m in pond3/(m2H), in the sedimentation tank tiltedly
Pipe or swash plate mounting inclination angle degree are 60 °.Using inclined tube (plate) sedimentation tank, save land area, construction investment expense, shorten
Granule settling height, the sedimentation time is reduced, desilting area is increased, is improve treatment effeciency.
The intermediate pool of setting stores the product water of flocculation sedimentation tank, is subsequently to lift water pump to carry as interim buffering pond
For the stable water yield.
Arranging lifting water pump can adopt booster pump, for being pressurized to raw water, overcome the cross-film needed for ultrafiltration membrance filter
Resistance.
The self-cleaning filter of setting fully achieves automatic running, uninterrupted backwash, and self-cleaning filter filtering accuracy is
100-200μm。
The ultrafiltration apparatus of setting are the core processing unit of the processing system, can remove completely float in water body,
The materials such as antibacterial, virus, algae, ultra-filtration filters mode is full stream dead-end filtration, and membrane flux is controlled in 45-60l/ (m2H), control
Between 0.05～0.2MPa, ultrafiltration apparatus are a cycle of operation at interval of 30-45min to operating pressure processed.
The clear water reserviors of setting are used to store ultrafiltration product water, can be follow-up confession as the main treatment facility of contact sterilizing
Water provides safeguard.Clear water reserviors are set as two lattice, design water inlet pipe, outlet pipe, air vent, overflow pipe, evacuation port, manhole etc., in pond
Training wall is set, it is ensured that the flowing of water, it is to avoid slough.Clear water reserviors configure the liquid location display, and liquid level can be on the spot
Show with host computer.Clear water reserviors pond holds according to the 10-20% of day peak demand rate considerations.
Be provided with flocculating agent feeding device in the front end of flocculation sedimentation tank, flocculation sedimentation tank front position add flocculant and
After raw water is sufficiently mixed, make the micro-floccule in raw water contact with each other collision, to form bigger flco removal is precipitated.
The accurate filter of setting can remove the secondary pollution retention in drinking water as protection defecator,
Qualified drinking water is provided.
In above-mentioned processing system, clear water reserviors are provided with level display device, the pond Rong Wei peaks water volume of the clear water reserviors
The 10～20% of amount；Clear water reserviors are provided with antibacterial throwing device.
The embodiment of the present invention provides a kind of drinking water combined treatment side for processing slight pollution high concentrtion earth surface water source
Method, using above-mentioned drinking water composite processing system, comprises the following steps：
Handled surface water Jing priming devices (gravity flow passes sequentially through thick grid, flume (pipe)) are entered into aeration preliminary sedimentation
Pond, the Jing aeration aeratings in the aeration preliminary sedimentation tank, after rotary grate, Jing water pumps are carried for the water outlet of the aeration preliminary sedimentation tank
Rise, and after adding flocculant and antibacterial in the raw water for being lifted, into voltage stabilizing distribution well, evenly distributed by voltage stabilizing distribution well
Flocculation postprecipitation is carried out into flocculation sedimentation tank after water outlet, flocculation sedimentation tank water outlet enters intermediate pool using liquid level difference gravity flow
Afterwards, boosted water pump supercharging carries out hyperfiltration treatment into after self-cleaning filter into ultrafiltration apparatus, and water outlet is flowed into using overbottom pressure
Clear water reserviors, antibacterial is added into before clear water reserviors, and the qualified drinking water in clear water reserviors flows into absorbing well, absorption well, is entered by transportation water pump
Accurate filter is filtered, and water outlet after filtration is transported to by aqueduct and each uses water spot Jing after processing water outlet pipe and discharge.
In above-mentioned processing method, the hydraulic detention time of aeration preliminary sedimentation tank is 4～24h；
Flow velocity is 0.6～0.8m/s before the grid of the rotary grate, and it is 0.8～1.0m/s to cross grid current speed；
The flocculation time of the flocculation sedimentation tank is 10～30min, and average velocity gradient G-value is 30～60-1, GT values are
104～105；
The concentration that adds that antibacterial is added in the raw water for being lifted is 2～5mg/L；Add before the entrance clear water reserviors
The concentration that adds of antibacterial is 0.5-1mg/L.So antibacterial part is added to raw water, carries out sterilizing to raw water and goes out
Algae, another part is added to clear water reserviors, suppresses microbial growth in product water.
The present invention can solve country's drinking water source at present much to be there is water turbidity height and is polluted in various degree, and
Conventional treatment process cannot be effectively treated the problem for producing qualified drinking water, the combined treatment system of the present invention to such water quality
System, with simple, economically and reasonably advantage, can reach energy-conservation, consumption reduction, the effect of operation steady in a long-term, it is ensured that the product after process
Product water fully meets the requirement of drinking water relevant criterion.
Composite processing system of the present invention includes：Flume (pipe), aeration preliminary sedimentation tank, rotary grate as priming device,
Water plant, voltage stabilizing distribution well, flocculation sedimentation tank, intermediate pool, lift water pump, self-cleaning filter, ultrafiltration, clear water reserviors, defeated
Conveying pump, accurate filter and disinfect unit.The combined treatment process of formation is：Flume (pipe)+aeration preliminary sedimentation tank+rotation
Turn grid+water plant+voltage stabilizing distribution well+flocculation sedimentation tank+intermediate pool+lifting water pump+self-cleaning filter+ultrafiltration+disappear
Poison+clear water reserviors+absorbing well, absorption well+transportation water pump+accurate filter.
Flume in said system is generally Reinforced Concrete Structure, is the main of diversion between earth's surface waters and aeration preliminary sedimentation tank
Treatment facility, it is general to consider water velocity at OK range (0.6-1.0m/s), in case the silt or bulky grain in water-stop body is outstanding
Deposition of the float in flume；Need to arrange thick grid, big floating thing enters follow-up system in anti-water-stop body；Diversion simultaneously
Canal arranges electric gate valve, for blocking the effect of current.As site address structure cannot build flume, it may be considered that adopt and draw
Water pipe, generally carbon steel pipe (do anti-corrosion), and such as conditions permit can consider to arrange two.
For slight pollution, the drinking water composite processing system at high concentrtion water source, aeration preliminary sedimentation tank is very important place
Reason unit.Aeration preliminary sedimentation tank typically can be laid using what earthwork pond or earth dam pond, conditions permit or scene needed with bottom of pond
Barrier film, needs to consider certain time of staying (4-24h).Aeration preliminary sedimentation tank can be used as the water of regulating and storing of water treatment system
Pond.Simultaneously water inlet one end arranges a number of surface aerator, and a certain amount of dissolved oxygen is filled toward raw water, on the one hand can be with profit
All kinds of polluters in water are carried out into degradation treatment with the effect of the assimilation and dissimilatiom of the microorganism retained in water, on the other hand can be with
The materials such as the low price ferrimanganic in water are aoxidized, high-valence state material is produced, Jing flocculation sediments are removed.Water inlet end is through processing
Afterwards, interlude and below section carries out respectively biochemical anoxic treatment and precipitation process, the organic contamination in water, ammonia nitrogen are further dropped
Solution is removed, and the float in water, fine sand particulate matter, part colloid are carried out precipitation removal by end using action of gravity.
Rotary grate is generally stainless steel, the floating thing mainly gone in eliminating water, prevents from entering follow-up system, rotation
Grid is general and absorbing well, absorption well, water suction pump house are built jointly.
Flocculation sedimentation tank typically adopts Reinforced Concrete Structure, is that flocculation tank and sedimentation tank are built jointly, and the purpose of flocculation basin is exactly
Creating suitable hydraulics makes this granule with flocculating property assemble in contacting with each other, to form larger floccule body
It is beneficial to precipitation to remove.Sedimentation tank is a kind of structures that float in eliminating water is gone using precipitation.Due to above there is aeration
Preformed precipitate processing unit, in order to save land area, construction investment expense, shorten granule settling height, reduce the sedimentation time,
Increased desilting area, improve treatment effeciency, sedimentation tank adopts inclined tube (plate) sedimentation tank.Allow to adopt in engineering specifications
Horizontal sedimentation tank or good fortune sedimentation tank etc..
Self-cleaning filter is a kind of defecator of grid-net type, used as the prefilter of ultrafilter membrane, it is therefore an objective to prevent into
The particulate matters such as fine sand, rust in water enter film silk, and to film silk expendable physical damage is caused.Generally select filtering accuracy
For 100-200 μm, self-cleaning filter can operationally realize Full-automatic backwashing, typically by pressure reduction, run time and handss
Moving three kinds of control modes carries out backwash.
Ultrafiltration (UF) belongs to the clean water treatment mode of pure physics, can effectively retain remaining float in water body, colloid,
The pollutant such as algae, antibacterial, virus, control delivery turbidity is reduced to below 1.0NTU, it is ensured that water outlet safety.Ultrafiltration simultaneously
(UF) have the advantages that green, efficient, energy-conservation, simple process, process are easy to control, be the water of current water supply plant most application prospect
Treatment technology, is that drinking water purification process of new generation and old water factory propose the preferable selection that mark is transformed, in water turbidity and the micro- life of dispatching from the factory
Not up to standard regional especially suitable of thing.Ultrafiltration has that effluent quality is good, go out water security as the core processing unit of clean water treatment
Property high, anti-shock loading is strong, high degree of automation, the advantages of reduce disinfectant consumption, reduce the generation of secondary pollutant.
Ultrafilter membrane can well solve various quality problems present in water factory as the core water-purifying process of water factory,
And do not affected by influent quality, effluent quality is excellent, and microbial safety sex chromosome mosaicism is solved, and ensures the microorganism of drinking-water
Safety；When there is larger fluctuation because of factors such as season, weathers in the water quality index such as the turbidity in raw water, microorganism, ultrafiltration
Membranous system still can stable operation, and can guarantee that effluent quality safety, can adapt to stronger impact load；Can be completely real
Existing full-automatic control and operation, contribute to realizing the management that water factory modernizes.
Conventional advanced treatment process, need to add the disinfectant of heavy dose, in current world wide in water-purifying process end
It is most widely used for liquid chlorine.As source quality pollution aggravates, disinfectant injection rate is also increased year by year.And having in chlorine and water
The organic chloride that the reaction of machine thing is generated seriously threatens human health.By ultrafiltration membrane treatment technology, can be in effectively catching water
Organic substance, greatly reduces the generation of organic chloride, and removes all virus and antibacterial, significantly reduces follow-up sterilization
The dosage of agent, has ensured that drinking water quality is healthy and safe.
Sterilization mainly adds antibacterial carries out sterilization algae removal to producing water, suppresses microorganism and the growth of antibacterial；Current generation
It is most widely used for liquid chlorine in the range of boundary, due to the lifting that current safety and environmental protection is required, chlorine as virulent material, its
Using being restricted, and the organic chloride that the Organic substance reaction in chlorine and water is generated seriously threatens human health, therefore
Sterilization adopts disinfection by chlorine dioxide for first-selected, secondly can consider to be electrolysed legal system hypochlorite disinfectant.
Accurate filter as the final filter for producing water, to macromole secondary pollution that may be present in last water outlet
Rust that thing, microorganism corpse, corrosive pipeline are produced etc. carries out effectively catching, qualified to final outflow water water quality to play important leverage
Effect.
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, surface water is incorporated into into aeration preliminary sedimentation tank by the flume (pipe) of processing system, flume is kept
Interior appropriate flow velocity (0.6-1.0m/s), prevents deposition of the big float in flume, and flume arranges thick grid, for stopping
Big floating thing is entered in aeration preliminary sedimentation tank in surface water body.
Aeration preliminary sedimentation tank designs time of staying 3-24h, and surface aerator is arranged as required in pond, and aerator purpose increases
The content of former oxygen in water, using the effect of microorganism in natural water, by COD, BOD present in water5It is dirty Deng Organic substance
Dye is cut down, while completing nitration reaction, nitrification liquid completes denitrification denitrogenation in anoxic zone.Aeration preliminary sedimentation tank is through long-time
Operation, bottom can produce a small amount of sludge, sludge is transported to into sludge treating system using movable type sludge pump, while retaining
Rational low sludge concentration in pond.
The water outlet of aeration preliminary sedimentation tank, through rotary grate, the thin floating thing in water and the retention of big float is gone using gravity stream
Remove, prevent the abrasion to water pump vane and blocking.Rotary grate is generally SS304 materials, keeps flow velocity 0.6-0.8m/s before grid,
Grid current speed 0.8-1.0m/s is crossed, in case the deposition of float.
Raw water is lifted pressure-increasing unit to voltage stabilizing distribution well by water plant using water pump, follow-up in order to ensure under normal circumstances
The effect of flocculation sediment, can add a certain amount of coagulated agent, the adsorption bridging of the high polymer hydrolyzed to form using coagulant
Effect, the micelle in raw water, float, part antibacterial and solute are adsorbed onto together.Voltage stabilizing distribution well abatement raw water is unnecessary
Energy, and raw water is evenly distributed to into subsequent processing units.
The dosing coagulant and raw water after being sufficiently mixed enters flocculation basin, current interact in flocculation basin, make micro- wadding
The mutual contact-impact of body phase, to form bigger flco.Different with flocculation mode according to water quality, water temperature, flocculation time is typically in 10-
30min, average velocity gradient G-value is typically in 30-60-1Between, GT values are maintained at 104-105Between.
More float is formed in the complete rear raw water of flocculation reaction, tube settler is subsequently set, with the float in Informal water
Removal can be effectively settled under gravity.Tube settler is to improve deposition efficiency, reducing floor space, reduce throwing
Rate are used, a kind for the treatment of facility of the less parallel oblique in many intervals of device or the less parallel oblique pipe of diameter in pond.
Tube settler is different according to condition of water quality, design surface load range 6-12m3/(m2H), inclined tube mounting inclination angle degree in pond
Usually 60 °.
Flocculation sedimentation tank water outlet flows into intermediate pool using action of gravity, does brief stay and buffering, by lifting water
Pump supercharging enters self-cleaning filter, and by filter screen the large-size particles thing in raw water is retained.Self-cleaning filter body material
Carbon steel line with rubber, filter screen adopts SS304 materials, 100-200 μm of filtering accuracy, backwash control mode to have pressure reduction, time and manual three
Kind.
Self-cleaning filter water outlet enters ultra-filtration membrane device, and ultrafilter membrane adopts external-compression type PVDF materials, and filter type is complete
Stream dead-end filtration, operating flux is controlled in 45-60l/ (m2H), operating pressure is controlled between 0.05～0.2MPa, ultrafiltration sets
Standby is a cycle of operation at interval of 30-45min, includes producing water, backwash in cycle of operation, air bump rinse operation, the step such as is just washing,
The persistent period of each step can be adjusted according to operation conditions.Ultrafiltration producing water water quality can meet turbidity≤1NTU, suspend
Thing ≈ 0mg/l, colourity≤10,0/ml of total number of bacteria ≈ etc., effluent index is better than GB《Drinking water sanitary standard》
(GB5749-2006)。
Ultrafiltration is produced water conservancy water pump overbottom pressure and flows into clear water reserviors, is entered before clear water reserviors and is added antibacterial, is carried out sterilization to product water and is disappeared
Poison, suppresses microorganism and the growth in clear water reserviors and conveyance conduit of antibacterial, while keeping drinking water to have certain antibacterial
Content.Clear water reserviors are set as two lattice, design water inlet pipe, outlet pipe, air vent, overflow pipe, evacuation port, manhole etc., arrange in pond and lead
Stream wall, it is ensured that the flowing of water, it is to avoid slough.Clear water reserviors configure the liquid location display, liquid level can on the spot with it is upper
Machine shows.Clear water reserviors pond holds according to the 10-20% of day peak demand rate considerations.
Clear water gravity flow in clear water reserviors enters absorbing well, absorption well, Jing after transportation water pump is by the filtration of 5 μm of accurate filters by water delivery
Pipeline uses water spot to each.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (9)
1. it is a kind of process slight pollution high concentrtion earth surface water source drinking water composite processing system, it is characterised in that the system bag
Include：
Priming device, aeration preliminary sedimentation tank, rotary grate, water pump, the first mixing reactor, voltage stabilizing distribution well, flocculation sedimentation tank,
Intermediate pool, lifting water pump, self-cleaning filter, ultrafiltration apparatus, the second mixing reactor, clear water reserviors, absorbing well, absorption well, transportation water pump
And accurate filter；Wherein,
The priming device is provided with surface water water inlet, the priming device, aeration preliminary sedimentation tank, rotary grate, water pump, first
Mixing reactor, voltage stabilizing distribution well, flocculation sedimentation tank, intermediate pool, lifted water pump, self-cleaning filter, ultrafiltration apparatus, second
Mixing reactor, clear water reserviors, absorbing well, absorption well, transportation water pump and accurate filter are sequentially connected with；
The accurate filter is provided with process water outlet pipe.
2. the drinking water composite processing system for processing slight pollution high concentrtion earth surface water source according to claim 1, it is special
Levy and be, the priming device is the flume for being provided with thick grid or the aqueduct for being provided with thick grid；
Surface aerator is provided with the aeration preliminary sedimentation tank；
The front end of the flocculation sedimentation tank is provided with flocculating agent feeding device.
3. it is according to claim 1 and 2 process slight pollution high concentrtion earth surface water source drinking water composite processing system, its
It is characterised by, the water pump adopts centrifugal pump；
The lifting water pump adopts booster pump.
4. it is according to claim 1 and 2 process slight pollution high concentrtion earth surface water source drinking water composite processing system, its
It is characterised by, the flocculation sedimentation tank is made up of the flocculation tank and sedimentation tank being sequentially connected with, and the sedimentation tank adopts inclined tube
Sedimentation tank or inclined-plate clarifying basin, the surface loading of the sedimentation tank is 6～12m3/(m2H), inclined tube or swash plate are pacified in the sedimentation tank
Dress angle of inclination is 60 °.
5. it is according to claim 1 and 2 process slight pollution high concentrtion earth surface water source drinking water composite processing system, its
It is characterised by, the filtering accuracy of the self-cleaning filter is 100-200 μm.
6. it is according to claim 1 and 2 process slight pollution high concentrtion earth surface water source drinking water composite processing system, its
It is characterised by, the ultrafiltration apparatus adopt filter type for the ultrafiltration apparatus for flowing dead-end filtration entirely, the membrane flux of the ultrafiltration apparatus
For 45～60l/ (m2H), operating pressure is controlled between 0.05～0.2MPa, is an operation week at interval of 30～45min
Phase.
7. it is according to claim 1 and 2 process slight pollution high concentrtion earth surface water source drinking water composite processing system, its
Be characterised by, the clear water reserviors are provided with level display device, the pond Rong Wei peaks of the clear water reserviors with the 10 of water body accumulated amount～
20%；
The clear water reserviors are provided with antibacterial throwing device.
8. it is a kind of process slight pollution high concentrtion earth surface water source drinking water combination treatment method, it is characterised in that adopt right
The drinking water composite processing system described in 1 to 7 any one is required, is comprised the following steps：
Handled surface water Jing priming devices are introduced into aeration preliminary sedimentation tank, the Jing aeration aeratings in the aeration preliminary sedimentation tank, institute
The water outlet of aeration preliminary sedimentation tank is stated after rotary grate, Jing water pumps are lifted, and add flocculant in the raw water for being lifted and kill
After microbial inoculum, into voltage stabilizing distribution well, sink after voltage stabilizing distribution well is evenly distributed and flocculated into flocculation sedimentation tank after water outlet
Form sediment, flocculation sedimentation tank water outlet is entered after intermediate pool using liquid level difference gravity flow, boosted water pump supercharging enters self-cleaning filter
Afterwards hyperfiltration treatment is carried out into ultrafiltration apparatus, water outlet flows into clear water reserviors, antibacterial, clear water are added into before clear water reserviors using overbottom pressure
Qualified drinking water in pond flows into absorbing well, absorption well, is filtered into accurate filter by transportation water pump, after filtration at water outlet Jing
After reason water outlet pipe is discharged, it is transported to by aqueduct and each uses water spot.
9. the drinking water combination treatment method for processing slight pollution high concentrtion earth surface water source according to claim 8, it is special
Levy and be, the hydraulic detention time of the aeration preliminary sedimentation tank is 4～24h；
Flow velocity is 0.6～0.8m/s before the grid of the rotary grate, and it is 0.8～1.0m/s to cross grid current speed；
The flocculation time of the flocculation sedimentation tank is 10～30min, and average velocity gradient G-value is 30～60-1, GT values are 104~
105；
The concentration that adds that antibacterial is added in the raw water for being lifted is 2～5mg/L；
Antibacterial is added before the entrance clear water reserviors adds concentration for 0.5-1mg/L.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101741A (en) * | 2021-03-01 | 2021-07-13 | 安徽理工大学 | Method and device for treating solid waste in mine water under mine |
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| JPS6157300A (en) * | 1984-08-29 | 1986-03-24 | Okayama Eisei Center:Kk | Treatment of sludge of excretion purification tank |
| CN101891337A (en) * | 2010-06-25 | 2010-11-24 | 北京伊普国际水务有限公司 | Treating system and method for treating surface water worse than Grade V into drinking water |
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| CN113101741A (en) * | 2021-03-01 | 2021-07-13 | 安徽理工大学 | Method and device for treating solid waste in mine water under mine |
| CN113101741B (en) * | 2021-03-01 | 2022-04-15 | 安徽理工大学 | Method and device for treating solid waste in mine water under mine |
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