CN102020376B - Method for removing algae using chlorine dioxide and device thereof - Google Patents
Method for removing algae using chlorine dioxide and device thereof Download PDFInfo
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- CN102020376B CN102020376B CN2010102030658A CN201010203065A CN102020376B CN 102020376 B CN102020376 B CN 102020376B CN 2010102030658 A CN2010102030658 A CN 2010102030658A CN 201010203065 A CN201010203065 A CN 201010203065A CN 102020376 B CN102020376 B CN 102020376B
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- 241000195628 Chlorophyta Species 0.000 description 1
- RVKQPVNRSGDRKC-UHFFFAOYSA-N OCl=O.OCl=O Chemical compound OCl=O.OCl=O RVKQPVNRSGDRKC-UHFFFAOYSA-N 0.000 description 1
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- 108010080698 Peptones Proteins 0.000 description 1
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- 238000005119 centrifugation Methods 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
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- 239000012467 final product Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 244000005706 microflora Species 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
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- 229960002218 sodium chlorite Drugs 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention provides a method for removing algae using chlorine dioxide and a device thereof for removing algae in natural water systems such as reservoirs, lakes, rivers and the like, and manmade water systems such as golf courses and the like, wherein the algae can sharply breed and cause the red alga and green alga phenomenon in the water systems. Particularly, the method is characterized by comprising the following steps of: sucking the water in the natural water systems and the manmade water systems, then performing a primary solid-liquid separating process to the algae contained in the raw water, supplying the discharged water after the primary solid-liquid separating process to a filter device to perform a secondary solid-liquid separating process to separate the algae remained in the discharged water, then feeding the chlorine dioxide into the discharged water through the filter device, thereby preventing generating biomembrane and removing the biomembrane in the filter device so as to improve the filter efficiency, finally, feeding the chlorine dioxide into the discharged water of the filter device to remove the residual algae discharged in the discharged water of the natural water system and manmade water system to improve the concentration of the dissolved oxygen.
Description
Technical field
The present invention relates to a kind of method and device thereof that utilizes dioxide peroxide to remove algae, it is for removing the algae of the artificial water system such as the natural stream networks such as reservoir, lake, rivers and golf course, this algae can be in above-mentioned water system sharply breeding and easily cause red algae and green alga phenomenon.
Background technology
Generally, when if the nutrient salts content such as the organism in the artificial water system such as the natural stream networks such as reservoir, lake, rivers and golf course, nitrogen, phosphorus too much the eutrophication phenomenon occurs, the vegetalitas planktonic organism or the algae that absorb this nutritive substance will sharply breed at short notice, thereby whole water system is dyed to redness or yellow-green colour, cause thus red algae or green alga phenomenon.
When putting aside too much in lakes and marhshes (lake, reservoir), the required nutritive ingredient materials of algae reproduction such as nitrogen (N), phosphorus (P) there will be above-mentioned eutrophication phenomenon.; nutrient salts content can be suitably through processes such as dilution, precipitation, biological decomposition and obtain natural purification; if but disposablely supply nutrient salts too much and while making lakes and marhshes lose self-purification capacity; the amount reproduction that just there will be various algae, and can repeat the vicious cycle that the algae resolvent becomes the nutritive substance of other algae again.
The red algae occurred in lakes and marhshes in eutrophic state or green alga phenomenon can make the color of water system water body change, and can significantly reduce water transparency simultaneously and endanger surrounding landscape, and the oxygen that also can make water system inside is exhausted and cause hydrobiont death.The remains of the breeding algae be killed can rot gradually and produce toxic substance and the smell that gives out a foul smell, thereby cause water quality deterioration after sinking to the bottom.When if the green alga phenomenon appears in water source especially from the beginning, not only be difficult to have peculiar smell in processing but also treated tap water.
The method of removing red algae and green alga has multiple, such as comprising following method: loess is shed method, Xiang Shuizhong sheds loess, and the algae that the adsorption that utilizes loess to have and force of flocculation carry out the nutrient salts in planar water and sharply breed, carry out flocculation treatment afterwards again; The flocculation agent throw-in play, Xiang Shuizhong drops into flocculation agent in order to condense nutrient salts and the algae sharply bred and to carry out flocculation treatment; Utilize the waterplant method, planting aquatic plants in water, by its root absorption nutrient salts to reach the purpose of removing it; The dissolved air floating method, Xiang Shuizhong passes into high-pressure air so that dissolved air in water produces floatingly, meanwhile, drives nutrient salts and algae and makes it floating, and then reach the purpose of removing them; Utilize the method for ozone killing microorganisms; The floating partition method of utilizing bubble that electrolytic reaction produces to be separated it; The chlorine produced while passing into electrolytic seawater is removed the method for algae etc.
But above-mentioned loess is shed method just can carry out an emergency schedule of processing rapidly at short notice, after after a while, because planktonic organism and turbidity can increase gradually, so still can make water quality deterioration.While adopting above-mentioned flocculation agent throw-in play, not only can spend great number flocculation agent expense because buying flocculation agent, and also likely produce 2 pollutions after water pollutant and flocculation agent generation chemical reaction.Although processing costs when employing utilizes the waterplant method is lower, but because waterplant is comparatively responsive to season and outside temperature condition, so not only application is restricted, and because waterplant residue after death itself is also organism, so it also can become water pollution source.While adopting the dissolved air floating method, floating owing to only depending on the dissolved air particulate to be difficult to make in water to breed algae, so the method not only is difficult to improve elimination efficiency, but also need to pass into high-pressure air from the water system outside, thereby can need great number equipment cost and associated maintenance expense, scene is killed and the floating badly damaged surrounding landscape of planktonic organism meeting.The ozonize method is to pass into ozone and the method for sterilizing by ozonizer in water, but ozonizer itself belongs to the high price equipment, and it also has certain danger and can send the peculiar stench of ozone.Utilize the floating law of segregation of electrolytic reaction to utilize the trickle bubble produced in electrolytic process that algae is climbed up on top of the water upper, but the energy consumption of large-scale electrolysis device high, have a big risk.The method of the chlorine produced while passing into electrolytic seawater can only be in marine use, and because this method directly passes into the chlorine that electrolytic reaction produces in seawater, so its economy is lower.
As mentioned above, up to the present, the method for the removing algae that people propose and device respectively have relative merits, so people are difficult to only application some methods wherein.For example, adopt directly when shedding loess, flocculation agent or sterilizing agent etc. in lakes and marhshes and remove the method for algae and nutrient salts, can not be lasting although effect is fast, because the algae be killed also can produce large amount of organic after decomposing again, so also there will be red algae, green alga etc. and form serious vicious cycle.
Yet, adopt after suction lakes and marhshes water when removing algae and nutrient salts and again to lakes and marhshes, releasing the method for water in other treatment unit of separately establishing, remove algae owing to utilizing the solid-liquid isolation methods such as centrifugation, floating separation, microstrain (microstraining), so while adopting the method, although can from the water system water body, isolate algae fully, but it not only needs the high price equipment, and the consumption of the energy and various running stores is also more.
In addition, during the algaes such as utilization ultraviolet ray, ozone or chlorine, although the method can be removed rapidly red algae and green alga, while carrying out disinfection too much, the toxicity of sterilizing agent can produce baneful influence to other waterplant.Otherwise, while utilizing microorganism or aquatic plant purification water quality, although the method at the root material of removing red algae and green alga, be to there is advantage aspect nutrient salts, but because the method is being difficult to implement in water system on a large scale, so its not only produce little effect and also removing speed slow, so the method can only be used as ancillary technique and use.
At this point, recently people develop some and utilize chemical and physical properties to carry out the method for solid-liquid separation processing and the method for utilizing ultraviolet ray, ozone or chlorine etc. together to process.Someone has proposed for example to utilize after flocculation-floating solid-liquid isolation method removes algae, passes into the method for chlorine in the water of releasing.But chlorine can with the water system water body in organism generation chemical reaction and generate carcinogenic substance.Otherwise, though the carcinogenic substance growing amount while utilizing ultraviolet ray or ozone to be processed is few, the removing effect of the water of releasing is not lasting.If it is inadequate therefore to contact the time of ultraviolet ray or ozone, algae or spore contained in the water of releasing also can be bred again.
In addition, carry out the method for solid-liquid separation processing as the algae in lakes and marhshes, someone has proposed flocculation-filter method.In its filter progress, can remove comparatively trickle throw out according to the strainer space, this filter progress seems of great use, but real while processing the former water that contains algae in reality, there is the poor problem of filtration efficiency in the method.
That is, Fig. 4 means to adopt the removing algae device that utilizes flocculation-filter method in prior art.As shown in the figure, removing algae device of the prior art comprises: artificial floating bed 150, and it is arranged on the bottom of the device that buoyancy is provided, to keep this device in levitated state; Flocculation agent storage tank 121, it is arranged on the top of artificial floating bed 150, and the flocculation agent of storage inside is for condensing pollutent; Flocculation agent transferpump 122 is exported flocculation agent by it from the flocculation agent storage tank; Former water working shaft 110, it is connected with the pipeline that runs through artificial floating bed 150 and is used for introducing former water; T-valve 160, it is arranged on the connecting portion of former water working shaft 110 export pipelines and flocculation agent transferpump 122 export pipelines, the pollutent in the former water precipitated with discharge; Strainer 130, it is filtered and is discharged the not deposit fouling thing by T-valve.
But, adopt the filter progress of the removing algae device that utilizes flocculation-filter method in prior art after operation for some time, easily form microbial film (biofilm) in its strainer 130.If form microbial film in strainer 130, space that will blocking filter and reduce filtration efficiency.Therefore the top of strainer 130 is equipped with tensimeter 131 in the prior art, exceeds the filter criteria force value once the force value shown and is just shunted in its pipeline mid-way, even with the flow through amount of former water of strainer 130 of assurance.Because the pollutent (flocculation agent) of the being shunted strainer 130 of can not flowing through directly is discharged in water system, so can reduce the algae elimination efficiency.Otherwise, if improve the algae elimination efficiency, need manually to change at set intervals No. one time strainer 130.Because the microbial film formed not only can shorten the life-span of strainer 130, the method also can, because the frequent strainer 130 of changing goes up by expense, therefore utilize the removing algae device of flocculation-filter method to be difficult to realize practical.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of method and device thereof that utilizes dioxide peroxide to remove algae, its characteristics are to adopt to the method that passes into dioxide peroxide in the water of releasing of inflow filter carrys out algae, the present invention also can prevent from filtration unit forming microbial film to extend the work-ing life of strainer, and the expense that can prevent like this goes up.The present invention also adopts to the method that passes into dioxide peroxide the water of releasing from filtration unit discharge and carrys out algae, again flows in water system to prevent not processed algae, and improves the algae elimination efficiency with this.
Particularly, after characteristics of the present invention are first to aspirate the water body in natural stream networks and artificial water system, the algae contained in former water is carried out to solid-liquid separation for the first time processes, carrying out solid-liquid separation for the second time after will being fed in filtration unit through the water of releasing that solid-liquid separation is processed for the first time processes in order to filter residual algae in this water of releasing, pass into dioxide peroxide in order to suppress the generating microbial film in microbial film and removing filtration unit again in the water of releasing of inflow filter, improve accordingly filtration efficiency.Pass into dioxide peroxide in the water of releasing of the most backward filtration unit discharge, be discharged to the residual algae in this water of releasing of natural stream networks and artificial water system with removing and improve dissolved oxygen concentration.
Also have, in the present invention, drop into flocculation agent in the former water of inflow filter, the floating matter that utilizes the floating matter separator tank to obtain to float over its water surface also is discharged to outside by it, floating matter separator tank discharge release water for to filtration unit to alleviate the load of filtration unit, therefore, can also reduce the dioxide peroxide usage quantity work-ing life that the present invention not only can extend strainer.
To achieve these goals, the method for utilizing dioxide peroxide to remove algae of the present invention comprises: the former water sucting stage of the former water that suction contains algae from water system; The 1st solids-liquid separation step that the algae sucked in former water is carried out to solid-liquid separation processing and removing; Drop into the stage to the 1st dioxide peroxide that passes into dioxide peroxide in the water of releasing in the 1st solids-liquid separation step discharge; The filtration stage that the water of releasing that has contained dioxide peroxide in the 1st dioxide peroxide input stage is carried out to solid-liquid separation processing and filtration; Drop into the stage to the 2nd dioxide peroxide that passes into dioxide peroxide in the water of releasing of filtration stage discharge; The water of releasing that has contained dioxide peroxide in the 2nd dioxide peroxide input stage is discharged to the water discharge phase of releasing in water system.
Above-mentioned the 1st solids-liquid separation step comprises: the flocculation stage that forms the throw out that contains algae to dropping into flocculation agent in the former water sucked; Utilize floating bubble to make on formed throw out climbs up on top of the water in the flocculation stage and carry out the floating separation phase of separating treatment.
The mud be separated at the 1st solids-liquid separation step and filtration stage, through being used for compressing the mud compression stage of mud and being used for extruding compression mud and water smoking of making sludge cake.
Being recycled to the 1st solids-liquid separation step at the water of releasing of mud compression stage and water smoking discharge processes again.
The dioxide peroxide used in the 1st and the 2nd dioxide peroxide input stage is by field erected chlorine dioxide generator supply.
Simultaneously, a kind of device that utilizes dioxide peroxide to remove algae of the present invention, its characteristics are, comprising: the former water suction apparatus of the former water that suction contains algae from water system; To sucking the 1st equipment for separating liquid from solid that in former water, algae carries out solid-liquid separation processing and removing; Pass into the 1st dioxide peroxide throwing device of dioxide peroxide in the water of releasing discharged to the 1st equipment for separating liquid from solid; The filtration unit that the water of releasing that has contained dioxide peroxide in the 1st dioxide peroxide throwing device is carried out to solid-liquid separation processing and filtration; Pass into the 2nd dioxide peroxide throwing device of dioxide peroxide in the water of releasing discharged to filtration unit; The water of releasing that has contained dioxide peroxide in the 2nd dioxide peroxide throwing device is discharged to the water discharge equipment of releasing in water system.
The 1st equipment for separating liquid from solid comprises: the flocculation plant that forms the throw out that contains algae to dropping into flocculation agent in the former water sucked; Utilize throw out that floating bubble makes to form in flocculation plant climb up on top of the water on and carry out the floatation separator of separating treatment.
From the mud of floatation separator and filtration unit discharge, through being used for compressing the mud compression set of mud and being used for extruding compression mud and the dewatering unit of making sludge cake is processed.
Also comprise to the chlorine dioxide generator of the 1st and the 2nd dioxide peroxide throwing device supply dioxide peroxide.
The method that the present invention adopts the front end at filtration unit to pass into dioxide peroxide is carried out algae, it can prevent from filtration unit forming microbial film to extend the work-ing life of strainer, the present invention also adopts the method that passes into dioxide peroxide in the water of releasing discharged by filtration unit to carry out algae, and it can prevent that not processed algae from flowing in water system again.
Also have, in the present invention, drop into flocculation agent in the former water of inflow filter, the floating matter that utilizes the floating matter separator tank to obtain to float over its water surface to and it is discharged to outside, the present invention not only can remove algae and the nutrient salts that contain in former water, can also alleviate the load of filtration unit, the usage quantity of required dioxide peroxide in the time of can extending the work-ing life of strainer and reduce algae.
The accompanying drawing explanation
Fig. 1 means the explanation method of dioxide peroxide removing algae and the schematic diagram of device thereof of utilizing of the present invention.
Fig. 2 means that the present invention utilizes dioxide peroxide to remove the schema of the method for algae.
Fig. 3 means that the present invention utilizes dioxide peroxide to remove the structural representation of the device of algae.
Fig. 4 means and adopts the formation schematic diagram that utilizes the removing algae device of flocculation-filter method in prior art.
[description of reference numerals]
10: suction pump 20: remove the algae device
21: 22: the 1 equipment for separating liquid from solid of former water suction apparatus
23: the 1 dioxide peroxide throwing devices 24: filtration unit
25: the 2 dioxide peroxide throwing devices 27: mud storagetank
28: compression set 29: dewatering unit
30: chlorine dioxide generator 31: producer
32: storage tank 33: supply pipe
212: water collecting basin 221: flocculation tank
222: floating matter separator tank 223: the tank of releasing
224: flocculation agent tank 225: stirrer
226: aerator 227: the floating matter clearing device
241: filter vat 242: strainer
244: inflow pipe 245: outlet pipe
291: return line
Embodiment
Describing with reference to the accompanying drawings the present invention in detail utilizes dioxide peroxide to remove the method for algae and the embodiment of device thereof.
At first, Fig. 1 means that explanation the present invention utilizes dioxide peroxide to remove the method for algae and the schematic diagram of device thereof.
As shown in the figure, removing method of the present invention is ' water system outer treatment process ', that is, the water body in the suction water system, remove the algae device remove algae and nutrient salts after again to the water of releasing in water system.Its characteristics are to pass into dioxide peroxide in the former water of inflow filter in order to kill contained algae in former water, the method can suppress to form microbial film and remove microbial film and improve filtration efficiency, then prevents to remove residual algae that to passing into dioxide peroxide in the water of releasing of filtration unit discharge it from again breeding and improving dissolved oxygen concentration.
; with the water body in the artificial water systems such as the natural stream networks such as suction pump 10 suction reservoirs, lake, rivers and golf course to removing in algae device 20; through flocculation, processings such as floating, algae and the water of releasing are carried out to the solid-liquid separation processing in removing algae device 20, can again be discharged into water system from removing the water of releasing that algae device 20 discharges.From removing algae device 20 isolated mud, by sludge treatment equipment, processed.
Now, to the front end of removing filter progress in algae device 20, pass into the dioxide peroxide that generated by chlorine dioxide generator 30 in order to kill the algae contained in former water, suppress to form microbial film and remove microbial film in filter progress.And to passing into too the dioxide peroxide generated by chlorine dioxide generator 30 in the water of releasing that is discharged to water system, in order to the removing residual algae in water of releasing.
Therefore compared with prior art, the present invention utilizes dioxide peroxide to remove algae method and device thereof not only can improve the algae elimination efficiency, reduce maintenance cost, can also reduce to greatest extent the impact on aquatic environment.
Removing algae method of the present invention is: pumping unit lakes and marhshes water and remove algae after, then pass in the water of releasing be eliminated in algae after dioxide peroxide and be discharged in lakes and marhshes.This point differs from directly to ' treatment process in water system ' that pass into dioxide peroxide in the water system water body.That is to say, while adopting ' treatment process in water system ' of prior art, for removing the algae in lakes and marhshes, need in water body, directly pass into a large amount of dioxide peroxide.But be difficult to keep the concentration of dioxide peroxide in suitable state owing to adopting in this water system treatment process, so it is lower that the method is not only removed algae efficiency, if, while the too high situation of chlorine dioxide concentration occurring, can produce on the contrary foul odour or have influence on hydrobiont.Also have, the algae be killed can only sink to the bottom and can not remove the nutrient salts as red algae or green alga root material.
Yet, when adopting ' treatment process outside water system ' of the present invention, water body in suction in water system is to after in removing algae device of the present invention, by flocculation, floating or filter etc. and to process and to the algae that contains in former water with nutrient salts carry out the solid-liquid separation processing and by its removing, pass into dioxide peroxide and further kill solid-liquid separation and fail algae or the spore removed in processing in the water of releasing, the present invention can improve the elimination efficiency of red algae and green alga greatly.And compared with prior art, can significantly reduce the usage quantity of dioxide peroxide during residual algae in the water of releasing of removing after solid-liquid separation of the present invention is processed, but also can keep dioxide peroxide to there is suitable concentration, thereby can not produce foul odour or have influence on aquatic environment, to processing and separated algae compressed and dehydration procedure cake processing afterwards processed again through solid-liquid separation, so just can from water system, dispose pollutent fully.
Fig. 2 means that the present invention utilizes dioxide peroxide to remove the schema of 1 embodiment of the method for algae.
The present invention includes: the former water sucting stage S100 of the former water that suction contains algae from water system; Form the flocculation stage S200 of the throw out that contains algae to dropping into flocculation agent in the former water sucked; The floating separation phase S300 that utilizes bubble that the throw out formed in the flocculation stage is climbed up on top of the water and goes up and separated; The 1st dioxide peroxide that passes into dioxide peroxide in the water of releasing of discharging to floating separation phase drops into stage S400; The filtration stage S500 that the water of releasing that has comprised dioxide peroxide in the 1st dioxide peroxide input stage is carried out to solid-liquid separation processing and filtration; Drop into stage S600 to the 2nd dioxide peroxide that passes into dioxide peroxide in the water of releasing discharged in filtration stage; The water of releasing that has comprised dioxide peroxide in the 2nd dioxide peroxide input stage is discharged to the water discharge phase S700 that releases in water system; Compress the mud compression stage S800 of the mud discharged in floating separation phase and filtration stage; Extruding has been compressed mud and has been made the water smoking S900 of sludge cake; The water of releasing that makes the mud compression stage and discharge in the water smoking is back to the water refluxing stage S1000 that releases in flocculation stage again.In addition, the present invention also comprises that making in site the 1st and the 2nd dioxide peroxide drop into the dioxide peroxide supply stage S1100 of required dioxide peroxide of stage.
Former water sucting stage S100 in the present invention refers to after the water body of the artificial water systems such as the natural stream networks such as suction reservoir, lake, rivers and golf course, the more former water that contains algae is introduced to the present invention and remove the stage in algae device 20.
Now, removing of the present invention algae device 20 be arranged on near the of lake, reservoir nearby or swim on the water surface of lake, reservoir and get final product.Former water sucks and removes in algae device 20 by flexible pipe.
Flocculation stage S200 refer in containing the former water of algae drop into flocculation agent and in and the electric charge of algae microparticle surfaces, or at colloid surface, the particle coagulation that makes by absorption and bridging effect becomes large flocculation process, finally can form the throw out that contains algae.The flocculation agent that the flocculation stage is used can be used molysite or the aluminium salt used in water treatment procedure.
Floating separation phase S300 refers to the former water that is formed with throw out is introduced in floating matter separator tank 222, the trickle bubble produced by aerator 226 is provided to the bottom of floating matter separator tank 222, the throw out that flocculated and trickle bubble is collided and adhere to generation throw out-bubble incorporation body and stage on climbing up on top of the water.Meanwhile, obtain the floating matter on the water surface that floats to floating matter separator tank 222 with floating matter clearing device 227 and it is discharged to outside, the water of releasing is by the water pipe discharge of releasing.In addition, also can utilize the high pressure water that high-pressure water pipe ejects to produce trickle bubble.
Filtration stage S500 refers to by being filled in the filtrates such as filter material layer, micro-strainer or strainer (or claiming strainer) in filter vat 241, the stage of again removing trickle throw out contained in the water of releasing of floating separation phase S300 discharge.Meanwhile, the water of releasing that flows through filtrate is discharged by processing pipe.So, the filtrate that is formed with trickle through hole due to the filtration stage utilization carries out the solid-liquid separation processing, so the filtrate through hole can be blocked after after a while, if need, frequently change or cleans filtrate can reduce filtration efficiency.Therefore, in order to improve filtration efficiency, just should not make the filtrate through hole blocked.
But, contain the more algae be not eliminated in the water of releasing due to floating separation phase S300 discharge, so be easy to form microbial film (biofilm) in filtrate.Microbial film refers to because the growth of tiny microflora is formed on the material with 3 dimension structures on filter material surface, its material with comparatively robust structure for being comprised of microorganism and secreted EPM (extracellular polymeric matrix) thereof.Difference according to microbe species, above-mentioned biomembranous thickness maximum can reach 100 μ m, because its physical properties shows as, is difficult for disintegrating or separating, therefore, the movement of throw out can be hindered after on filter material surface, forming microbial film, thereby filtration efficiency can be reduced.Microbial film not only can shorten the life-span of filtrate, and the method also can be because the frequent filtrate of changing goes up by expense, and it is for removing the method for algae and the major cause that device is difficult to arrange filter progress thereof in prior art.
For solving the problems of the technologies described above, in removing algae method of the present invention, in the water of releasing that flows into filtration stage, pass into dioxide peroxide, form microbial film or remove established microbial film in order to be suppressed on filtrate.
The fusing point of dioxide peroxide (chlorine dioxide) is that-59 ℃, boiling point are 11 ℃, under normal temperature environment, and the yellow-green colour gas that it is slightly chlorine smell, soluble in water and ether etc., have stronger oxidation capacity and have sterilizing function.It is reported, reducing aspect bacterium, virus active, dioxide peroxide has the effect not worse than chlorine.Dioxide peroxide is easily absorbed by peptone (a kind of protein), and virus is wrapped in albuminous membranae usually, once this film, absorbs dioxide peroxide, just can reduce viral activity.Especially dioxide peroxide is as sterilization, sterilizing agent containing the aerobic base, and its oxidation capacity exceeds 2.5 times than original chloro.As removing virus and green algae, the most effective sterilizing of spore class, sterilizing agent, dioxide peroxide can have the sterilizing ability in larger pH value scope (2～10).The concentration of dioxide peroxide during lower than 17ppm without the medicament smell, even also can bring into play abundant sterilizing, disinfection efficacy during its concentration lower (1ppm).The required deficiency of time of the intestinal bacteria of Chlorine Dioxide In Killing more than 99% that are for example 0.25ppm by concentration 41 seconds.
Therefore drop into stage S400 at the 1st dioxide peroxide and pass into dioxide peroxide in the water of releasing of floating separation phase discharge, and in the water of releasing, the concentration of dioxide peroxide remains between 0.1～1ppm, can suppress thus in filtration stage form microbial film or remove established microbial film and improve filtration efficiency on filter material surface.
Pass into dioxide peroxide in the water of releasing in the 2nd dioxide peroxide input stage S600 is discharged into from water system to filtration stage, and in the water of releasing, the concentration of dioxide peroxide remains between 0.1～1ppm, can kill thus the algae and the spore that remain in the water of releasing.The oxygen produced while being decomposed by dioxide peroxide in addition, improves the dissolved oxygen concentration of the water of releasing.
That is, dioxide peroxide is as containing the sterilization of aerobic base, sterilizing agent, because it can not produce carcinogenic substance and be easy to be formed non-toxic substance by the light fast decoupled, so can endanger environment hardly.Meanwhile, because dioxide peroxide is the oxygenant containing the aerobic base, thus can in decomposition course, produce oxygen, thus can improve water quality by increasing dissolved oxygen (DO).The chlorite (chlorite) generated by dioxide peroxide and oxymuriate (chlorate) are numerous inorganicss and the rear final products generated of hydrobiont generation reaction in water, and it can prevent that bacterium from breeding again.
Concrete impact on environment after using dioxide peroxide as sterilant is at present also not quite clear, it is reported, its impact is at least little than the impact of chlorine.Dioxide peroxide and the chlorite maximum contaminant level of U.S.'s regulation are respectively 0.8ppm and 1.0ppm.
Therefore, in after the 2nd dioxide peroxide input stage S600 passes into dioxide peroxide in the water of releasing of filtration stage discharge, it being discharged to water system, the water of releasing that perhaps makes to be stored in the tank of releasing keeps the sterilizing ability and comes algae and spore with this, just can prevent that it from breeding again, can improve dissolved oxygen concentration and improve water quality simultaneously.
In addition, dioxide peroxide is active higher molecularity free radical morphologization compound, and high concentration of chlorine dioxide gas re-uses hardly, mainly produces the dioxide peroxide of aqueous solution state.Chlorine dioxide is compressible one-tenth liquid state at normal temperatures, but the pure chlorine dioxide liquid property after compressed is very unstable, the dangerous of the blast of producing is arranged and be difficult to keeping and transportation, need manufacture at the scene.Its manufacture method has three kinds usually, wherein makes Textone (NaClO
2) and chlorine generation chemical reaction and the method that generates gaseous chlorine dioxide has advantages of that yield rate is high, generate byproduct hardly, chemical equation is as follows:
2NaClO
2+Cl
2→2ClO
2+2NaCl
While calculating according to above formula, after 1.34mg Textone and 0.5mg chlorine generation chemical reaction, can generate the 1.0mg dioxide peroxide.But, because the Textone purity in reality is 80% left and right, so produce the needed common Textone of 1.0mg dioxide peroxide, be 1.68mg.
That is, dioxide peroxide supply stage S1100 refers to and manufactures at the scene the stage that supply the 1st and the 2nd dioxide peroxide drops into the required dioxide peroxide of stage S400, S600.Preferably at dioxide peroxide supply stage S1100, the raw material sodium chlorite aqueous solution is carried out electrolysis treatment and makes aqueous solution of chlorine dioxide, then this aqueous solution of chlorine dioxide is supplied to drop into stage S400, S600 to the 1st and the 2nd dioxide peroxide.
In addition, mud compression stage S800 refers to the stage that mud that floating separation phase S300 and filtration stage S500 are produced is precipitated, compresses, and water smoking S900 refers to that the mud will compressed carries out the pressurizing and dehydrating processing and stage of making sludge cake.
In addition, the water discharge phase of releasing S700 refers to that the water of releasing that the 2nd dioxide peroxide stage of dropping into has been comprised to dioxide peroxide is discharged to the stage in water system again, and the water refluxing stage stage S1000 that releases is the stage of instigating the water of releasing of mud compression stage and water smoking discharge again to be back to the flocculation stage and to process.
As mentioned above, the method of utilizing dioxide peroxide to remove algae in the present invention is: the water body in suction natural stream networks and artificial water system, according to existing solid-liquid separating method, the algae contained in the water system water body is carried out after 1 solid-liquid separation processes and reduce the concentration of algae in former water, with filter progress, it being carried out to 2 solid-liquid separation and processing.Can form biomembranous problem for solving in prior art at filtration stage, pass into dioxide peroxide to improve filtration efficiency in the water of releasing that flows into filtration stage, passing into dioxide peroxide in the water of releasing of filtration stage discharge carries out after sterilising treatment, it being discharged in natural stream networks and artificial water system, can prevent that thus algae from breeding again, can improve dissolved oxygen concentration and improve water quality.While in addition, being discharged to the water of releasing that contains dioxide peroxide in water system also tool remove the effect of red algae and green alga in the water system water body.
Fig. 3 means that the present invention utilizes dioxide peroxide to remove the structural representation of the device of algae.
As shown in the figure, in the present invention, utilize the removing algae device 20 of dioxide peroxide to comprise substantially: the former water suction apparatus 21 of the former water that suction contains algae from water system; The 1st equipment for separating liquid from solid 22 that carries out the solid-liquid separation processing and removed sucking the algae comprised in former water; Pass into the 1st dioxide peroxide throwing device 23 of dioxide peroxide in the water of releasing discharged to the 1st equipment for separating liquid from solid 22; Comprised the filtration unit 24 that the water of releasing of dioxide peroxide carries out solid-liquid separation processing and filtration to flowing through the 1st dioxide peroxide throwing device; Pass into the 2nd dioxide peroxide throwing device 25 of dioxide peroxide in the water of releasing discharged to filtration unit; The water of releasing that flows through the 2nd dioxide peroxide throwing device and comprised dioxide peroxide is discharged to the water discharge equipment of releasing in water system.
Former water suction apparatus 21 by the pipeline that connects water system, be arranged on the suction pump 10 on pipeline and be used for the water collecting basin 212 of the former water that interim storage sucks and form.
The 1st equipment for separating liquid from solid 22 consists of flocculation tank 221, floating matter separator tank 222 and the tank 223 of releasing.
Former water causes flocculation tank 221 from water collecting basin 212, and together through the stirring of motor-driven stirrer 225, forms trickle throw out with the flocculation agent of flocculation agent tank 224 supply.
Formed and the former water of trickle throw out can form larger throw out after flocculation tank 221 causes floating matter separator tank 222, it floats with the trickle bubble incorporation produced by the aerator 226 that is arranged on bottom, the floating matter clearing device 227 that then is installed in top is discharged to outside and is eliminated, and the water of releasing of floating matter has been removed in discharge afterwards.The tank 223 of releasing is used for storing the water of releasing that floating matter separator tank 222 discharges temporarily.
Filtration unit 24 comprises: the filter vat with prescribed level 241 that is used for storing the water of releasing of coming from tank 223 positive delivery of releasing; Be arranged on the filtrate 242 of filter vat 241 inside.In addition, the water of releasing that flows through filtrate 242 is discharged in circulation groove 26, fails by the device for discharging sludge of other setting, to be discharged to outside through the mud of filtrate 242.
In addition, the 1st dioxide peroxide throwing device 23 and the 2nd dioxide peroxide throwing device 25 are arranged on release water inflow pipe 244 and the water outlet pipe 245 of releasing that connects filter vat 241.Preferably the 1st and the 2nd dioxide peroxide throwing device 23,25 is injector, and it is arranged on described release water inflow pipe 244 and the water outlet pipe 245 of releasing.Pass into dioxide peroxide through this injector in the water of releasing of release water or filter vat 241 discharges that are transported by the pressure transferpump.
Pipeline and control valve for connecting water body in water system are installed in circulation groove 26, are used for the water of releasing that comprises dioxide peroxide is discharged in water system.
In addition, the mud by floating matter separator tank 222 and filter vat 241 discharges is sent in the mud storagetank 27 for compressing mud.Mud in mud storagetank 27 is compressed processing in mud compression set 28, in dewatering unit 29, through extruding, after making sludge cake, discharges afterwards.The water of releasing of described mud compression set 28 and dewatering unit 29 discharges can return in water collecting basin 212 and again process through return line 291.
Also have, chlorine dioxide generator 30 from dioxide peroxide to the 1st and the 2nd dioxide peroxide throwing device 23,25 that supply with comprises: electrolysis also generates the producer 31 of aqueous solution of chlorine dioxide; Be used for storing the storage tank 32 of the dioxide peroxide generated.
Dioxide peroxide in dioxide peroxide storage tank 32 supplies to the 1st and the 2nd dioxide peroxide throwing device 23,25 through supply pipe 33.On preferred described supply pipe 33, be equipped with for controlling the control valve of dioxide peroxide flow velocity.
Thus, by suction pump 10, will supply to water collecting basin 212 as the lakes and marhshes water of water system.The former water that causes water collecting basin 212 mixes with flocculation agent in flocculation tank 221 can form the trickle throw out that comprises algae and nutrient salts particulate afterwards.After the trickle bubble incorporation that the trickle throw out of supply and aerator 226 produce in described flocculation tank 221, float up on floating matter separator tank 222 waters surface, the floating matter that will contain algae by floating matter clearing device 227 is scavenged into outside.The water of releasing of having removed algae supplies, to filter vat 241, now, by the injector be arranged on the water inflow pipe 244 of releasing, in the water of releasing, to pass into dioxide peroxide through the tank 223 of releasing.The water of releasing that has comprised dioxide peroxide flows through filter vat 241 and strainer 242 and is processed by solid-liquid separation.Fail to be discharged to through the algae of strainer 242 outside of filter vat 241, the water of releasing that flows through strainer 242 is discharged in circulation groove 26.Now, pass into dioxide peroxide by the injector be arranged on the water outlet pipe 245 of releasing in the water of releasing.Can kill thus the algae or the spore that contain in the water of releasing, the oxygen that dioxide peroxide generates in decomposition course can also improve the dissolved oxygen concentration of the water of releasing.
In addition, the water of releasing of circulation groove 26 is discharged in water system, the algae be filtered in separated algae and described filter vat 241 in described floating matter separator tank 222 can be for store to mud storagetank 27 temporarily, after making cake, mud compression set 28 and dewatering unit 29 be discharged to outside more afterwards, in order again to process the water of releasing discharged in compression and dehydration, it is back in described water collecting basin 212.
As mentioned above, the present invention respectively passes into dioxide peroxide one time in the front-end and back-end of filtration unit 24, can improve filtration efficiency like this, and can carry out sterilizing and prevent that algae from breeding again the water of releasing.Now, to filtration unit 24 front ends or rear end, pass into dioxide peroxide, so that in the water of releasing, chlorine dioxide concentration remains between 0.1～1ppm.Concentration is difficult to obtain good removing algae effect during lower than 0.1ppm, and concentration can not obtain better effect during higher than 1ppm.
In sum, the present invention is after suction lakes and marhshes water, separate algae so that the algae in removing the water system water body fully in the removing algae device of separately establishing, after its characteristics are, by flocculate-floating method of employing, algae contained in former water is carried out to 1 solid-liquid separation processing, the recycling dioxide peroxide kill in flocculation-floating operation fail the separation algae, the algae be killed is separated again by filter progress.The dioxide peroxide that passes into the filtration unit front end can suppress to generate and remove the microbial film in the space of blocking filtering device, in order to improve filtration efficiency and to extend work-ing life of strainer.Meanwhile, the present invention passes into dioxide peroxide in the water of releasing of filtration unit discharge, to be used for killing algae and the spore of releasing in water, also can improve the dissolved oxygen content of the water of releasing.In addition, because the water of releasing be discharged in water system can keep the disinfecting power in certain time limit, so can alleviate red algae in the water system water body and the degree of spreading unchecked of green alga phenomenon.
Claims (3)
1. a method of utilizing dioxide peroxide to remove algae, is characterized in that,
Comprise: the former water sucting stage of the former water that suction contains algae from water system; Form the flocculation stage of the throw out that contains algae to drop into flocculation agent in the former water sucked in described former water sucting stage; Utilize bubble to make the floating separation phase that in the described flocculation stage, formed throw out climbs up on top of the water and separated; Drop into the stage to the 1st dioxide peroxide that passes into dioxide peroxide in the water of releasing in described floating separation phase discharge; The filtration stage that the water of releasing that has comprised dioxide peroxide in described the 1st dioxide peroxide input stage is carried out to solid-liquid separation processing filtration; Drop into the stage to the 2nd dioxide peroxide that passes into dioxide peroxide in the water of releasing in the discharge of described filtration stage; The water of releasing that has comprised dioxide peroxide in described the 2nd dioxide peroxide input stage is discharged to the water discharge phase of releasing in water system.
2. the method for utilizing dioxide peroxide to remove algae according to claim 1, is characterized in that,
At described floating separation phase and the separated mud of filtration stage, the mud compressed in the mud compression stage that is used for compressing mud and extruding and make in water smoking of sludge cake and processed.
3. a device that utilizes dioxide peroxide to remove algae, is characterized in that,
Comprise: the former water suction apparatus of the former water that suction contains algae from water system; Drop into flocculation agent in the former water sucked to described former water suction apparatus and form the flocculation plant of the throw out that contains algae; Utilize bubble by floatation separator that in described flocculation plant, formed throw out climbs up on top of the water and separated; Pass into the 1st dioxide peroxide throwing device of dioxide peroxide in the water of releasing discharged to described floatation separator; The filtration unit that the water of releasing that has comprised dioxide peroxide in described the 1st dioxide peroxide throwing device is carried out to solid-liquid separation processing filtration; Pass into the 2nd dioxide peroxide throwing device of dioxide peroxide in the water of releasing discharged to described filtration unit; The water of releasing that has comprised dioxide peroxide in described the 2nd dioxide peroxide throwing device is discharged to the water discharge equipment of releasing in water system; Be used for to the dioxide peroxide feeding mechanism of the described the 1st and the 2nd dioxide peroxide throwing device supply dioxide peroxide; Be used for compressing the mud compression set of the mud discharged in described floatation separator and filtration unit; Be used for the mud that compressed of extruding and make the dewatering unit of sludge cake.
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| KR1020090089695A KR100939442B1 (en) | 2009-09-22 | 2009-09-22 | Algae removal method and the system which using the chlorine dioxide |
| KR10-2009-0089695 | 2009-09-22 |
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| CN102329021B (en) * | 2011-08-10 | 2013-01-23 | 戴群 | High-eutrophication water advanced purification treatment method and device |
| CN103964552B (en) * | 2014-04-16 | 2016-04-20 | 上海海洋大学 | A kind of for suppressing water surface water silk floss to form the method with growth |
| KR101960188B1 (en) * | 2017-10-12 | 2019-03-19 | 고려대학교 산학협력단 | Method for enhancement of astaxanthin content in microalgae using chlorine dioxide |
| CN109467244A (en) * | 2018-11-01 | 2019-03-15 | 中核通辽铀业有限责任公司 | A kind of In-situ Leaching Uranium Mine method for deodorizing wastewater |
| CN109496826A (en) * | 2018-11-13 | 2019-03-22 | 国家海洋环境监测中心 | Huanghai Sea green tide preventing control method based on overwintering micro- traditional font library abatement |
| KR102028401B1 (en) | 2019-04-19 | 2019-10-04 | 김상식 | Eco-friendly algae disposal system |
| CN110235773A (en) * | 2019-07-26 | 2019-09-17 | 国家海洋环境监测中心 | Seaweed raft frame green alga preventing control method based on micro- traditional font library abatement of aestivating |
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| CN100551851C (en) * | 2007-08-01 | 2009-10-21 | 济南市供排水监测中心 | A kind of city tap-water highly effective low-toxin release algae-removing method |
| JP5141163B2 (en) * | 2007-09-27 | 2013-02-13 | 栗田工業株式会社 | Bactericidal and algae killing method |
| KR100864806B1 (en) * | 2008-07-04 | 2008-10-23 | 김성종 | Advanced watertreatment system which maximizes treatment efficiency |
| CN101306891A (en) * | 2008-07-15 | 2008-11-19 | 沈阳建筑大学 | Composite oxidizing treatment process of micro-polluted source water |
| CN101514060B (en) * | 2009-03-31 | 2011-10-26 | 上海穆特环保科技有限公司 | Device for treating emergency drinking water |
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