CN104250059B - The processing system of a kind of algae blooms water source water and processing method - Google Patents
The processing system of a kind of algae blooms water source water and processing method Download PDFInfo
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- CN104250059B CN104250059B CN201410514447.0A CN201410514447A CN104250059B CN 104250059 B CN104250059 B CN 104250059B CN 201410514447 A CN201410514447 A CN 201410514447A CN 104250059 B CN104250059 B CN 104250059B
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Abstract
The present invention discloses processing system and the processing method of a kind of algae blooms water source water, and this processing system includes pretreatment unit, advanced treatment unit and the disinfection unit being sequentially connected；Described pretreatment unit includes air-floating apparatus, electrolysis unit and coagulant chemicals dosing plant；Described air-floating apparatus includes flotation tank, be connected with flotation tank dissolved air water feeding mechanism and slag-scraper, described electrolysis unit is located in described flotation tank；Described advanced treatment unit includes that flocculant chemicals dosing plant, mixing pit, flocculation basin, tube settler and membrane filtration pond, described mixing pit, flocculation basin, tube settler, membrane filtration pond are sequentially connected, and described flocculant chemicals dosing plant is connected with mixing pit；Described mixing pit is provided with the first agitating device, and flocculation basin is provided with the second agitating device；Described disinfection unit is connected with described membrane filtration pond.Processing system of the present invention and processing method can efficiently process algae blooms water source water, can effectively remove algae to water-producing process and the impact of water quality.
Description
Technical field
The present invention relates to the water treatment field, be specifically related to processing system and the processing method of a kind of algae blooms water source water.
Background technology
The high algae pollution of domestic lake and reservoir water is a universal phenomenon, the most graceful pleasant lake water scenery such as famous Taihu Lake, Chaohu, Dian Chi, East Lake and Dongting Lake is all becoming bad five class surface water over nearly more than 20 years, organic contamination is serious, high algae takes place frequently, and Wuxi City is in recent years also as Taihu Lake blue algae bloom causes the serious consequence that whole city cuts off the water.Therefore, in recent years for the process of lake height algae pollution source water, this research of technique has been listed in the special emphasis problem in program for the development of science and technology by country.
Algae blooms water is the result of water source eutrophication, and it is high that water quality shows as algae, and CODMn is high, ammonia nitrogen is high, nitrite is high, the green toxin of algae is high and part metals ion is higher.Growing of algae directly affects controlling the water circulation production, containing the toxicant such as tetrachloroethylene, dimethyl disulphide in the secretions of algae and catabolite, can cause people, animal poisoning, its musty produced, fishy smell, also make people can not accept when drinking.The amount reproduction of algae brings bigger difficulty to the follow-up coagulation the turbid descending of water treatment plant and chlorination.In the high algae phase, former water water body aesthetic quality is deteriorated, and conventional water treatment technology is caused the biggest impact, seriously reduces the effect that water processes, and adds the cost that water processes, have impact on normal production run.Algae substances in filter tank also can amount reproduction, cause filter material layer to block, make shorten filter cycle, reduce aquifer yield, increasing washing water quantity also affects effluent quality.
Along with improving constantly of drinking water standard, how can effectively prevent and treat and remove algae to water-producing process and the impact of water quality, be one of the controlling the water circulation factory difficult problem that to endeavour to solve.
The existing processing technological flow of each controlling the water circulation factory is generally coagulating, rectangular sedimentation tank, quartz sand filtration, and according to domestic project Summary on technology, the algae average of lake and reservoir is 3 × 107Individual/more than L time, conventional water treatment technique does not adapts to, and effluent quality generally exceeds standard, and each water factory only has conventional treatment process, is not suitable for the source water of high algae phase.
Summary of the invention
The present invention provides processing system and the processing method of a kind of algae blooms water source water, and this processing system and processing method remove algae effectively on water-producing process and the impact of water quality.
The present invention adopts the following technical scheme that
The processing system of a kind of algae blooms water source water, including the pretreatment unit being sequentially connected, advanced treatment unit and disinfection unit；
Described pretreatment unit includes air-floating apparatus, electrolysis unit and coagulant chemicals dosing plant；Described air-floating apparatus includes flotation tank, be connected with flotation tank dissolved air water feeding mechanism and slag-scraper, described electrolysis unit is located in described flotation tank, and described coagulant chemicals dosing plant is connected with flotation tank, and described slag-scraper is located at flotation tank top；
Described advanced treatment unit includes that flocculant chemicals dosing plant, mixing pit, flocculation basin, tube settler and membrane filtration pond, described mixing pit, flocculation basin, tube settler, membrane filtration pond are sequentially connected, and described flocculant chemicals dosing plant is connected with mixing pit；Described mixing pit is provided with the first agitating device, and flocculation basin is provided with the second agitating device；
Described disinfection unit is connected with described membrane filtration pond.
Described electrolysis unit is three-dimensional overpotential electrolysis reactor, is located at the bottom of flotation tank.
Described three-dimensional overpotential electrolysis reactor includes electrolysis bath and the anode being located in electrolysis bath, negative electrode and granule electrode group, and the top layer of described anode is coated with the metal-oxide inertia catalyst coatings that crystal grain is 10～35nm.
Described flotation tank is provided with dissolved air water release head；Described dissolved air water feeding mechanism includes air compressor machine, pressure volume pot and pressure pump；Described air compressor machine and pressure pump are connected with described pressure volume pot respectively, and described pressure volume pot is connected with dissolved air water release head.
Described flocculation basin includes the multiple ponds lattice being sequentially connected, and the second agitating device includes the multiple stirring paddles corresponding with pond lattice quantity, is respectively equipped with a stirring paddle in the lattice of each pond.
Described tube settler is provided with hexagonal honeycomb pipe, the inclination angle of described hexagonal honeycomb pipe, according to water quality situation, between 50 °-70 °, and preferably 60 °.
Described membrane filtration pond includes aerobic zone and Mo Zu district, and described aerobic zone is provided with aerator, and Mo Zu district is provided with membrane module.
Described membrane module includes organizing doughnut curtain type membrane more.
Described disinfection unit includes that clear water reserviors and hypochlorite generator, described hypochlorite generator are connected with described clear water reserviors, and described clear water reserviors are connected with described membrane filtration pond.
The processing method of a kind of algae blooms water source water, sequentially includes the following steps:
(1) pretreatment: algae blooms water source water enters flotation tank through pump, algae in former water is killed by the Strong oxdiative material that electrolysis unit produces, coagulant chemicals dosing plant adds coagulant and forms flco with dead algae, dissolved air water feeding mechanism is by dissolved air water supply to flotation tank, and dissolved air water is in the case of release suddenly, and the air being dissolved in water separates out, form a large amount of fine and close microbubble, microbubble adsorbs in uphill process on flco, makes flco float on the surface, and removes through slag-scraper；
(2) advanced treating and sterilization: the water after step (1) processes enters mixing pit, flocculant is added by flocculant chemicals dosing plant, use the first agitating device stirring mixing, former water is made to mix homogeneously with flocculant, subsequently into flocculation basin, former water is in flocculation basin under the stirring action of the second agitating device of decrescence speed change, and tiny coagulated particles, colloid are transformed into bigger colloid group, entering back into tube settler and carry out solid-liquid separation, the supernatant after separation flows to membrane filtration pond；After after being processed by membrane filtration pond, the most sterilized unit is sterilized, can use up to standard.
After using technique scheme, the present invention, compared with existing background technology, has the advantage that
Processing system of the present invention and processing method can efficiently process algae blooms water source water, and alga-killing rate reaches 99%, can effectively remove algae to water-producing process and the impact of water quality.Processing system of the present invention can replace tap water routine water manufacturing system completely, as tap water water generator or emergent water generator.
Accompanying drawing explanation
Fig. 1 is the structural representation of processing system of the present invention.
Reference numeral illustrates:
Air-floating apparatus 1, flotation tank 11, blender 111, air compressor machine 121, pressure pump 122, pressure volume pot 123, dissolved air water release head 124, slag-scraper 13, electrolysis unit 2, coagulant chemicals dosing plant 3, mixing pit 4, first agitating device 41, flocculation basin 5, second agitating device 51, first stirring paddle 511, second stirring paddle 512, 3rd stirring paddle 513, tube settler 6, flocculant chemicals dosing plant 7, membrane filtration pond 8, aerator 81, suction pump 82, backwashing pump 83, clear water reserviors 9, hypochlorite generator 10.
Detailed description of the invention
Some embodiments of the present invention presented below, to help being further appreciated by the present invention, but protection scope of the present invention is not limited in these embodiments.
Embodiment
As it is shown in figure 1, the processing system of a kind of algae blooms water source water, it includes pretreatment unit, advanced treatment unit and the disinfection unit being sequentially connected, wherein:
Pretreatment unit includes air-floating apparatus 1, electrolysis unit 2, coagulant chemicals dosing plant 3；Air-floating apparatus 1 includes flotation tank 11, the dissolved air water feeding mechanism being connected with flotation tank 11 and slag-scraper 13.Coagulant chemicals dosing plant 3 is connected with flotation tank 11, and slag-scraper 13 is located at flotation tank 11 top (being positioned at flotation tank 11 cell body), and flotation tank 11 is provided with blender 111.
Flotation tank 11 is provided with dissolved air water release head 124；Dissolved air water feeding mechanism includes air compressor machine 121, pressure volume pot 123 and pressure pump 122；Air compressor machine 121 and pressure pump 122 are connected with pressure volume pot 123 respectively, and pressure volume pot 123 is connected with dissolved air water release head 124.
Electrolysis unit 2 is three-dimensional overpotential electrolysis reactor, is located at the bottom (being positioned at flotation tank 11 cell body) of flotation tank 11.Three-dimensional overpotential electrolysis reactor includes electrolysis bath, anode, negative electrode and granule electrode group's (not shown), and the top layer of anode is coated with the metal-oxide inertia catalyst coatings that crystal grain is 10～35nm.The granule electrode group increased in a cell, they surfaces are charged, and electrochemical reaction can occur, thus form the 3rd pole.Compared with traditional two-dimensional sheet electrode, granule electrode group's surface area is greatly increased, and mass transfer velocity can be significantly increased, and improves current efficiency, significantly reduces energy consumption, has again " overpotential electrolysis " electrolytic potential concurrently high simultaneously, and oxidability is strong, the feature that corrosion resistance is strong.
Advanced treatment unit includes that flocculant chemicals dosing plant 7, mixing pit 4, flocculation basin 5, tube settler 6 and membrane filtration pond 8, mixing pit 4, flocculation basin 5, tube settler 6, membrane filtration pond 8 are sequentially connected, and flocculant chemicals dosing plant 7 is connected with mixing pit 4；Mixing pit 4 is provided with the first agitating device 41.
Flocculation basin 5 is provided with the second agitating device 51.Flocculation basin 5 includes the multiple ponds lattice being sequentially connected, and the second agitating device 51 includes the multiple stirring paddles corresponding with pond lattice quantity, is respectively equipped with a stirring paddle in the lattice of each pond.The present embodiment is particularly as follows: flocculation basin 5 includes 3 the pond lattice being sequentially connected, second agitating device 51 includes that the first stirring paddle the 511, second stirring paddle 512 and the 3rd stirring paddle 513, first stirring paddle the 511, second stirring paddle 512 and the 3rd stirring paddle 513 are respectively arranged in 3 pond lattice of flocculation basin 5.
Tube settler 6 is provided with hexagonal honeycomb pipe (not shown), the inclination angle of hexagonal honeycomb pipe, according to water quality situation, between 50 °-70 °, and preferably 60 °.
Membrane filtration pond 8 includes aerobic zone and Mo Zu district, and aerobic zone is provided with aerator, and Mo Zu district is provided with membrane module (being located in pond).Aerator includes the aerobic aeration pipe network (not shown) being located in cell body and the aerator 81 being located at outside cell body, and aerobic aeration pipe network is connected with aerator 81.The outlet in membrane filtration pond 8 connects suction pump 82.
Membrane module includes organizing doughnut curtain type membrane more.Doughnut curtain type membrane can be selected for PCDF doughnut curtain type membrane, and the long limit of membrane module is parallel to separate membrane cisterna water outlet direction and be perpendicular to separate membrane cisterna water inlet direction, and the film frame of membrane module carries the gas of film backwash and rushes webmaster and control piper.Gas rush webmaster with pond outside backwashing pump 83 be connected.The gentle webmaster that rushes of aerator is respectively provided with and controls, and the former is normally opened, the latter's intermittent duty.
Mixing pit 4, flocculation basin 5, tube settler 6 and being made of one steel construction pond, membrane filtration pond 8 type, it is simple to mobile, be conducive to the on-the-spot or motor-driven demand of test.
Disinfection unit includes clear water reserviors 9 and hypochlorite generator 10, and hypochlorite generator 10 is connected with clear water reserviors 9, and clear water reserviors 9 are connected with membrane filtration pond 8.
As it is shown in figure 1, the processing method of a kind of algae blooms water source water, sequentially include the following steps:
(1) pretreatment: algae blooms water source water enters flotation tank 11 through pump, algae in former water is killed by the Strong oxdiative material that electrolysis unit 2 produces, coagulant chemicals dosing plant 3 adds coagulant and forms flco with dead algae, dissolved air water feeding mechanism by dissolved air water supply to flotation tank 11, dissolved air water is in the case of release suddenly, the air being dissolved in water separates out, form a large amount of fine and close microbubble, microbubble adsorbs in uphill process on flco, flco is made to float on the surface, remove through slag-scraper 13, scum silica frost is periodically transported outward, the most also reached to remove the purpose of SS and COD.In pretreatment, electrolysis unit 2 produces in addition to electrochemical oxidation process except electrolysis process, also supervenes the flood tide diameter microbubble less than 40 μm, be greatly improved flotation tank 11 except algae efficiency.The running voltage of the electrolysis bath of electrolysis unit 2 can be 2～250V, and adjacent two interelectrode voltages can be 2～18V, and electric current density can be 3～400mA/cm2。
(2) advanced treating and sterilization: the water after step (1) processes enters mixing pit 4, adds flocculant by flocculant chemicals dosing plant 7, flocculant can be selected for that aluminium polychlorid, polyacrylamide be a kind of or the mixture of two kinds.Use the first agitating device 41 stirring mixing, former water is made to mix homogeneously with flocculant (about 1 minute time of staying of design), subsequently into flocculation basin 5, former water in flocculation basin 5 through the first stirring paddle 511 of decrescence speed change, under the stirring action of the second stirring paddle 512 and the 3rd stirring paddle 513, tiny coagulated particles, colloid is transformed into bigger colloid group, enter back into tube settler 6 and carry out solid-liquid separation, supernatant after separation flows to the solid impurities such as the mud bottom the 8(of membrane filtration pond periodically artificial outer row), aerobic aeration and the membrane filtration of membrane module through aerator, filtering accuracy is between 0.8～1.5 millimeter, delivery turbidity≤0.1NTU, follow-up without connecing conventional filtration pond again.Water after membrane filtration is retracted to clear water reserviors 9 by suction pump 82, then after hypochlorite generator 10 sterilizes, can use up to standard.
Processing system of the present invention and processing method can efficiently process algae blooms water source water, and alga-killing rate reaches 99%, can effectively remove algae to water-producing process and the impact of water quality.
Above-described embodiment is the present invention preferably embodiment; but embodiments of the present invention are also not restricted to the described embodiments; the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (10)
1. a processing system for algae blooms water source water, is characterized in that: include the pre-place being sequentially connected
Reason unit, advanced treatment unit and disinfection unit；
Described pretreatment unit includes air-floating apparatus, electrolysis unit and coagulant chemicals dosing plant；Described
Air-floating apparatus includes flotation tank, be connected with flotation tank dissolved air water feeding mechanism and slag-scraper, institute
Stating electrolysis unit to be located in described flotation tank, described coagulant chemicals dosing plant is connected with flotation tank, institute
State slag-scraper and be located at flotation tank top；
Described advanced treatment unit includes that flocculant chemicals dosing plant, mixing pit, flocculation basin, inclined tube are heavy
Pond, shallow lake and membrane filtration pond, described mixing pit, flocculation basin, tube settler, membrane filtration pond sequentially phase
Even, described flocculant chemicals dosing plant is connected with mixing pit；Described mixing pit is provided with the first agitating device,
Described flocculation basin is provided with the second agitating device；
Described disinfection unit is connected with described membrane filtration pond.
The processing system of a kind of algae blooms water source the most according to claim 1 water, is characterized in that:
Described electrolysis unit is three-dimensional overpotential electrolysis reactor, is located at the bottom of flotation tank.
The processing system of a kind of algae blooms water source the most according to claim 2 water, is characterized in that:
Described three-dimensional overpotential electrolysis reactor include electrolysis bath and the anode being located in electrolysis bath, negative electrode and
Granule electrode group, it is lazy that the top layer of described anode is coated with the metal-oxide that crystal grain is 10～35nm
Property catalyst coatings.
The processing system of a kind of algae blooms water source the most according to claim 2 water, is characterized in that:
Described flotation tank is provided with dissolved air water release head；Described dissolved air water feeding mechanism includes air compressor machine, pressure
Container tank and pressure pump；Described air compressor machine and pressure pump respectively with described pressure volume pot phase
Even, described pressure volume pot is connected with dissolved air water release head.
The processing system of a kind of algae blooms water source the most according to claim 4 water, is characterized in that:
Described flocculation basin includes the multiple ponds lattice being sequentially connected, and the second agitating device includes and pond lattice quantity pair
The multiple stirring paddles answered, are respectively equipped with a stirring paddle in the lattice of each pond.
The processing system of a kind of algae blooms water source the most according to claim 5 water, is characterized in that:
Described tube settler is provided with hexagonal honeycomb pipe, and the inclination angle of described hexagonal honeycomb pipe is 50 °
-70°。
7. according to the processing system of a kind of algae blooms water source water described in any one of claim 1-6,
It is characterized in that: described membrane filtration pond includes aerobic zone and Mo Zu district, described aerobic zone is provided with aeration dress
Putting, described Mo Zu district is provided with membrane module.
The processing system of a kind of algae blooms water source the most according to claim 7 water, is characterized in that:
Described membrane module includes organizing doughnut curtain type membrane more.
The processing system of a kind of algae blooms water source the most according to claim 7 water, is characterized in that:
Described disinfection unit includes clear water reserviors and hypochlorite generator, described hypochlorite generator and institute
Stating clear water reserviors to be connected, described clear water reserviors are connected with described membrane filtration pond.
10. one kind uses the process of arbitrary described algae blooms water source water treatment system in claim 1-9
Method, is characterized in that: sequentially include the following steps:
(1) pretreatment: algae blooms water source water enters flotation tank through pump, the strong oxygen that electrolysis unit produces
Algae in former water is killed by compound matter, and coagulant chemicals dosing plant adds coagulant and dead algae shape
Becoming flco, dissolved air water feeding mechanism is by dissolved air water supply to flotation tank, and dissolved air water is in release suddenly
In the case of, the air being dissolved in water separates out, and forms a large amount of fine and close microbubble, and microbubble is upper
Adsorb during Shenging on flco, make flco float on the surface, remove through slag-scraper；
(2) advanced treating and sterilization: the water after step (1) processes enters mixing pit, passes through
Flocculant chemicals dosing plant adds flocculant, uses the first agitating device stirring mixing, makes former water and wadding
Solidifying agent mix homogeneously, subsequently into flocculation basin, former water is second stirring through decrescence speed change in flocculation basin
Mixing under the stirring action of device, tiny coagulated particles, colloid are transformed into bigger colloid group, then
Entering tube settler and carry out solid-liquid separation, the supernatant after separation flows to membrane filtration pond；Pass through film
After filtering ponds process after the sterilization of the most sterilized unit, can use up to standard.
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| CN201410514447.0A CN104250059B (en) | 2014-09-29 | The processing system of a kind of algae blooms water source water and processing method |
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| CN102633383A (en) * | 2012-04-16 | 2012-08-15 | 扬州大学 | Deepwater circulating and enhanced coagulating sedimentation algae-removing water treatment system and method |
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| CN102936072A (en) * | 2012-04-19 | 2013-02-20 | 波鹰(厦门)科技有限公司 | Nano-catalysis, electrolysis, flocculation and air-floatation device |
| KR101221579B1 (en) * | 2012-10-12 | 2013-01-14 | 김규홍 | Apparatus for removing water-bloom and red tide mounted to ship |
| CN103523967A (en) * | 2013-11-05 | 2014-01-22 | 哈尔滨工业大学 | Method for treating short-flow water with sedimentation and air-floating coupling as core |
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Effective date of registration: 20211101 Address after: 361000 room 205A, south of entrepreneurship building, entrepreneurship Park, torch high tech Zone, Xiamen, Fujian Patentee after: XIAMEN SITEFU TECHNOLOGY CO.,LTD. Address before: 361000 room 205B, entrepreneurship building, entrepreneurship Park, Xiamen Torch High tech Zone, Huli District, Xiamen City, Fujian Province Patentee before: XIAMEN JIANAN TECHNOLOGY Co.,Ltd. |