CN100519442C - Controllable fast reservior blue-green alga bloom eliminating method - Google Patents
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Abstract
The controllable fast reservoir blue-green alga bloom eliminating method includes: raising filter feeder fishes; raising and protecting snails, crabs, calms and other water benthic fauna to degrade excrement of the fishes; and controlling water level to favor the disturbance of wind wave to bottom sludge, to ensure the ingestion of water benthic fauna to silt and the limitation of snails' ingestion area. The present invention adopts biological treatment of reservoir blue-green alga bloom without lowering eutrophic salt condition of water.
Description
Technical field
The present invention relates to eliminate the algal bloom technical field, particularly the technology of reservior blue-green alga bloom elimination.
Background technology
Quote blue-green alga bloom that ecological management technology control body eutrophication causes and be everybody consistent admitted facts at present, two fields of administering the algae and water wawter blooms of for this reason extending out.1. algal blooms such as non-classical bio operon technology control Microcystis aeruginosa, anabena, 2. bioremediation technology reduces water eutrophication salt (nitrogen, phosphorus) composition.
Existing control techniques problem: the biological operative technique with filter-feeding fish is widely used, successful case is arranged, the failure lesson is also arranged, wherein two admitted facts: (1) filter ichthyophagy class (variegated carp, silver carp) can reduce the quantity of Microcystis aeruginosa in the water body, algae; (2) ight soil of silver carp is again the second former source of water pollution; Because do not decompose the enzyme of blue-green algae in its digestive tube of silver carp, so it does not have the ability of decomposing and utilizing frond; Frond is not dead fully at the enteron aisle of fish, and silver carp contains algae ight soil and be easy to diffusion in water body, easier breeding growth algae in water body.Do not have fine solution so filter piscivorous food chain.
Disclosing a kind of method of controlling blue-green alga bloom as Chinese patent publication number 1562809, at first is to put the silver carp bighead of filter-feeding and carp, crucian in a suitable place to breed in the zone of breakout of water bloom, plays the effect of control algae; Next is that zooplankton is a food with small-sized algae, also can reduce the quantity of algae; The 3rd is that spiral shell, freshwater mussel can be carried the fish-egg motion, and the distributed areas of fish are increased; The 4th be phycophage, molten phycomycete and other algae that eats microorganism all in natural water separation and purification come out, through the laboratory is a large amount of cultivate after, put into blue-green alga bloom outburst zone again, play the effect of control algae; The 5th is that the recovery of breakout of water bloom zone waterplant also can be played the effect of control algae; The 6th is that machinery removes algae, and fixed blue-green alga bloom clearing device and portable blue-green alga bloom clearing device are arranged.Its concrete grammar comprises the following steps: that A. puts the silver carp bighead of filter-feeding and carp, crucian in a suitable place to breed in the zone of breakout of water bloom, at 6.1km
2The test site in put filter-feeding fish in a suitable place to breed, regular investigates fish, makes to put fish density and remain on same level; B. zooplankton is a food with small-sized algae, and the common zooplankton wheel animalcule of test site water body, flea and Magna put into the zone of breakout of water bloom then at the experiment indoor cultivation; C. spiral shell, freshwater mussel can be carried the fish-egg motion, and the distributed areas of fish are increased, and throw in spiral shell, freshwater mussel in the test site; D. the microorganism of phycophage, molten phycomycete and other algae that eats all is that separation and purification goes out in natural water, after a large amount of cultivations in laboratory, puts into blue-green alga bloom outburst zone again; E. the effect of control algae is played in the recovery of breakout of water bloom zone waterplant, and breeding floatingleaved plant and submerged plant in the lake are as water caltrop, Herba potamogetonis distincti, water caltrop, eel grass, red line grass, black algae, watermifoil; Coastal belt breeding emergent, as cattail, reed, willow; F. machinery removes algae fixed blue-green alga bloom clearing device and portable blue-green alga bloom clearing device, and technical process is: the enrichment of lake surface blue-green alga bloom, Algae absorbing device collection, algae, algae water gravity slanted screen filter flash trapping stage, algae slurry, algae water horizontal screw centrifuge dewaters, and secondary separates, algae mud.
It applies to Dian Chi, Yunnan, Taihu Lake, Jiangsu is country's " 863 Program " major project of management goal, has launched a plurality of test sites among a small circle with water ecology-bioremediation technology, according to obtaining sizable achievement in the existing relevant report pilot region.But be not amplified to whole water body, it is that local degree is improved that blue-green algae in the water body (microcystis waterbloom) improvement still is in, and more propositions are conclusions of theory, should also shoulder heavy responsibilities by the water body blue algae water bloom governance process.
Also have, as pacify the biological pollution treatment engineering in little Chaohu, throw in a large amount of silver carp 4-5 ten thousand kilogram to Chaohu every year in continuous 6 years (1999-2004), threw in 170,000 kilograms of silver carps, and controlled blue-green alga bloom with filter food algae fish in 2004.Blue-green alga bloom year after year constitutes the subject matter in Chaohu, and in July, 2004 report, part waters, Chaohu blue-green algae breaks out, and especially be with in Guishan Mountain one, and blue-green algae is spreaded all over the middle of a lake, and the thickest local degree of depth reaches about 1 meter.The biological pollution treatment engineering that starts 6 years is not received effect preferably.
Summary of the invention
The object of the present invention is to provide a kind of controllable fast reservior blue-green alga bloom eliminating method, under the condition that does not reduce water eutrophication salt (nitrogen, phosphorus), water body is thrown in filter ichthyophagy class and zoobenthos, and on the basis in adjustable waters, administering with long-term prevention and filter ichthyophagy short-term is the principle theory, employing is eliminated blue-green algae (Microcystis aeruginosa, anabena) hypopus based on bottom-dwelling, the density means take place in a large amount of filter ichthyophagy class control water body blue-green algaes in early days, have designed many approach of filter ichthyophagy class dejection degradation; Control Microcystis aeruginosa, anabena wawter bloom (water body does not have blue-green alga bloom) solve the water body blue algae water bloom problem at short notice fast.
For achieving the above object, technical scheme of the present invention is, controllable fast reservior blue-green alga bloom eliminating method comprises,
A. filtering the ichthyophagy class throws in;
B. water body zoobenthos such as snail, river crab, Corbicula fluminea, freshwater mussel are thrown in and protection, and river crab, snail are to filter ichthyophagy class dejection degradation;
C. water level management is controlled the water level height, and promptly water level and mud bank expose the position, guarantees that stormy waves limits bed mud disturbance, assurance snail feeding area.
Wherein, in the filter ichthyophagy class launch process, dynamically fish for body weight and reach the above individuality of 3000 gram/tails, keep filter ichthyophagy class appropriate size in the water body, guarantee fish faeces integrity in water body, will help to control algae and spread again.
The filter ichthyophagy class release time: annual 1-2 month fry is thrown in; Filter piscivorous density and be 30-50 gram/every cubic metre.
The water body zoobenthos comprises crustaceans, snail, wheel animalcule, protozoon, provides the foundation for filtering piscivorous indigested Microcystis aeruginosa ight soil eventual degradation.
3.8 meters～4.2 meters of the water level parameters of regulation and control reservoir; 1.3～1.7 meters of the water level depth of regulation and control reservoir side slope mud bank.
Design philosophy of the present invention: ecological management is the basic ideas that solve reservior blue-green alga bloom; lively thing input of filter drinking water and protection propagation are important techniques means in the governance process in the reservoir; by the non-classical type bio operon of filter ichthyophagy class technology; thoroughly solve the problem of eutrophication blue-green alga bloom in the short period of time; must be target with the early growth of control blue-green algae; employing is taken technological line as the leading factor with mollusks such as snail control blue-green algae body spore source, cooperates silver carp bio operon law technology and silver carp dejection degradation security system to realize.
1, the non-classical bio operon method of silver carp: filter ichthyophagy class is apparent to the early stage pellet density control of Microcystis aeruginosa effect, also is control algae technology commonly used at present.But its control algae effect unstable and it does not digest the diffusion of Microcystis aeruginosa ight soil after eating algae, seriously influence its actual effect.We improve and innovate at the problem of defective and technology.
(1) the filter ichthyophagy class release time: annual 1-2 month is the best fry release time, and input fry survival rate is the highest in this time period.
(2) filter ichthyophagy class kind: eating algae most effective in the filter ichthyophagy is silver carp, selects fingerling based on silver carp.
(3) filter ichthyophagy class specification: the suitableeest specification of silver carp food algae is with in 1000 grams-3000 grams.
(4) filter piscivorous density: average out to 30-50 gram/every cubic metre.
(5) integrity of filter ichthyophagy class ight soil: the individual difference in size of filter ichthyophagy class has tangible influence to the ight soil structural integrity that excretes, individual big silver carp secreted ight soil mucus in digestive tube is few, it is poor to discharge the content forming degree, in the water wave, easily be broken into tiny algae particle, form new diffuse source, so constant situation of filter ichthyophagy class total amount in the maintenance water body, dynamically fish for body weight and reach the above individuality of 3000 gram/tails, keep filter ichthyophagy class appropriate size in the water body, guarantee fish faeces integrity in water body, will help to control algae and spread again.
(6) silver carp dejection degradation degree design: in indigested Microcystis aeruginosa fills ight soil fish, make ight soil in water body, increase rising phenomenon, do not go to eliminate it if there is other method of controlling, again the diffusion of the influence of environment (wind wave action) frond will become wawter bloom propagation source, allow glaur under the ight soil of fish, this is the possibility that prevents the diffusion of ight soil Microcystis aeruginosa effectively, also further degrades for Microcystis aeruginosa simultaneously and lays a solid foundation.Make silver carp have an opportunity to take in more silt particle, more suspended matter is taken in the body of silver carp, and fish faeces has more the mud feature, and ight soil compactness makes and do not digest Microcystis aeruginosa to be subjected to the silt grain fastening, and easier moulding falls to water-bed layer.
The fish of specifically selecting for use have referring to table 1:
Bream, crucian class: subjacent waters life, omnivory is these non-filter ichthyophagy class characteristics, the solid matter of water body (for example silver carp ight soil), mud top layer particulate matter etc. all can be as the food source, these contain the digestive process of algae ight soil food source through bream, crucian carp, frond will further cause death, and prevent indigested Microcystis aeruginosa diffusion.
Silver carp (silver carp): filter ichthyophagy class, based on the food vegetal alga, and blue-green algae (Microcystis aeruginosa, anabena particle) all is its ideal filter food baits in water body.
Variegated carp (flathead): filter ichthyophagy class, in water body,, also eat vegetal alga simultaneously based on drinking water body minisize animal, be more suitable for controlling the algae requirement below the age.
Bream: omnivory with food solid matter (ight soil of pasture and water, organic matter particle, other fish), mainly is distributed in lower region in the water at water body.
Crucian: omnivory with food solid matter (ight soil of organic matter particle, other fish), mainly is distributed in lower region in the water at water body.
Table 1
2, input and the protection of zoobenthos such as snail, river crab, Corbicula fluminea, freshwater mussel.
Zoobenthos (snail, freshwater mussel, Corbicula fluminea, river crab), water body fish animal (silver carp, flathead, bream, crucian carp) food chain process in water body play an important role to stablizing the water body ecologic structure.Wherein, river crab, snail are to filter ichthyophagy class dejection degradation, the Microcystis aeruginosa eventual degradation is large-scale zoobenthos and the miniature hydrocoles that relies in the water body, wherein crustaceans, snail, wheel animalcule, protozoon have constituted a huge chain of degraded step by step, provide the foundation for filtering piscivorous indigested Microcystis aeruginosa ight soil eventual degradation.Purpose is arranged, pointedly the selection of restraining effect animal monoid, density selection and operational factorss such as design and water surrounding regulation and control has been played in growth of blue algae population and breeding, thereby reach control blue-green alga bloom effect.Injected volume be the more important thing is protection and is bred existing snail radix to the water body supplemental amount according to the quantity of snail in the water body spring.Because its breeding potential height of spiral shell; spiral shell population radix is the increase of tens multiplying powers in the annual water body; though number of individuals filter appetite is few; but its googol amount is that other zoobenthos can't be compared with the effect that is produced; so greatly develop the snail zoobenthos is most important link in the food chain, and forbidding throwing in food spiral shell black carp in the water body is important measures as protection of the aquatic resources with the spiral shell of banning catching, Corbicula fluminea.
(1) spiral shell: be benthic important mollusk monoid, special filter food structure that it is widely distributed, breeding potential is high, it had and feeding behavior directly to water body blue-green algae (Microcystis aeruginosa, anabena) and autumn hypopus and next year the blue-green algae quantity of sprouting the growth of body in early days very big control action kou is arranged, it does not digest blue-green algae ight soil to the filter fish that are deposited in the mud top layer simultaneously, further Degradation is arranged, and experimental data shows that it has killing action to blue-green algae.
(2) river crab: it is the Crustacean of life in 2 years, it is the zoobenthos of food life with the mud layer various materials in surface (pasture and water class, tack algae, fish sedimentation ight soil, dead animal corpse etc.), it the end dwell the life in without a break the mud entry material is ingested and is moved, guaranteed the purification of water body mud layer, particularly in control algae process, the filamentous cyanobacteria that adheres to the mud layer growth there is tangible removing effect, prevents from that sudden blue-green alga bloom from having to play main effect.
(3) Corbicula fluminea: be benthic mollusc, its quantity of growth and breeding in mud layer is maximum, and it is the widest to distribute, and the huge density so its filter eclipse series is unified has more the effect of filter food to the Microcystis aeruginosa growth young.
3, water level management, reservoir water bit line (referring to the depth of water) is the height between surface water and the bed mud, rationally control diversion frequency it can influence water quality condition He Shui, the mud environment directly changes.By the reasonable utilization of manual shift or elements, hydrocoles food chain efficient is higher, finally reach the target of controlling algae fully.
Reservoir: when the reservoir flow was accelerated, its water quality had river characteristic, and its water quality has the lake feature again when flow slows down.
Water level: the gauging line of reservoir (height between surface water and the bed mud), the long-term diversion of extracting water storage reservoir, a large amount of silt causes reservoir different zones water level difference, and water level is shallow on the limit, storehouse, and the center water level is dark.
Blue-green algae (Microcystis aeruginosa): algae has the phenomenon of vertical distribution and floating migration in water body, and this phenomenon is that physiological structure of algae own and metabolism are caused.It and Environment Day shine, the water body turbidity has substantial connection.
With bed mud top layer life, the most normal active zone is that its can change with sunshine at night according to turbidity height, the daytime of water body move (sediment layer arrives surface layer of water) in 1.5 meters of the depth of waters to spiral shell in water body.
Extracting water storage reservoir, its water level are to control, and as required water level are controlled in diversion the capacity (there are Baosteel reservoir, old capable reservoir etc. in Shanghai) of reservoir.To reservior blue-green alga bloom comprehensive regulation process,, 1. cause the water quality environment of water body to change by water level management; 2. cause the vertical distribution rule of blue-green algae (Microcystis aeruginosa) to change, the traction algae floats to topmost surface; 3. also can cause bottom-dwelling (snail) migration to change, distribute consistent with blue-green algae; 4. also will change feeding habits ratio (being that quantity of sand and mud increases) in the filter ichthyophagy class food intake; 5. rationally the result of water level management will help to improve the algal control efficient of filter algae animal in the water body, and utterly destroying blue-green alga bloom in the short period of time becomes possibility.
(1) extracting formula reservoir level just is controlled, and regulation and control water level height directly influences the capacity of reservoir, distribution and the benthic ecotope of algae changes, thereby influence hydrocoles food chain process.Rational water level of controlled reservoir and mud bank expose the position, are to guarantee that effectively stormy waves limits bed mud disturbance, assurance snail feeding area.3.8 meters～4.2 meters of the water level parameters of regulation and control reservoir, 1.3～1.7 meters of considerable part zone water depths.
(2) has floating outstanding particulate water quality: can effectively utilize distinguished and admirable, flow disturbance mud top layer, storehouse by water level management, make water body produce more floating outstanding composition granule, floating outstanding sand grain is taken in when silver carp filter food blue-green algae, blue-green algae is closely fixed-type by silt in the fish digestive tube, generation has mud characteristics ight soil, because high disintegration, the free settling characteristic of being difficult for of ight soil density reduced the piscivorous ight soil of filter and spread.Possesses the piscivorous mud ight soil of the filter of formation.The floating outstanding particle parameter of water body (mean value 〉=33mg/l).
4, monitoring parameter: administer supervisory function bit in the blue-green alga bloom process and be very important technology parameter, adjust the water body water level in time according to the monitor data A+E and participate in the blue-green alga bloom regulation effect to reach hydrocoles,
(1) algae and water density monitoring: be the most directly to reflect blue-green algae development degree and development trend, in different time period in every year.The understanding and the development trend of the algae density rule by water body, helping provides interim control measures to water body treating, annual 9-10 month is the Microcystis aeruginosa sedimentation period, reduce with water temperature decline algae propagation, Microcystis aeruginosa density in the water body descends, and to water bottom mud layer precipitation (this stage control water capacity, filter-feeding fish density is to reducing Microcystis aeruginosa residual volume window of opportunity in the increase water body); From the March in October to the second year be the Microcystis aeruginosa hypopus, Microcystis aeruginosa can't be monitored in this stage water body, a large amount of precipitation hypopus particle (this stage mainly effectively eliminates the stage with zoobenthos such as snails) in the mud layer; From 3-4 month be the Microcystis aeruginosa revival phase, frond is in young state, to be distributed in water body lower floor district, water body top area monitoring less than, and lower region often can be through exist (this stage mainly be with filter food snail, filter ichthyophagy class topmost control stage, and the control effect has determined also summer and autumn, whether microcystis waterbloom took place) of multiplication culture monitoring algae; From 5-6 month (water temperature 20-24 ℃) though micro-capsule frond population and density still are in the young and build phase, but the characteristics that had come-up sinking blue-green algae characteristic, so water body is in environmental factors (illumination, turbidity, wind direction) influence down, water surface can see that (this control water level and regulating flow increase and contain silt Gao Shui (turbidity 〉=26NTU) water quality and wind direction in the water body microcystis waterbloom phenomenon in stage, the weather combination, allow the algae of water body that more opportunity come-up surface layer of water is arranged, it is to reduce the algae density method fast that regulation and control Microcystis aeruginosa enrichment phenomenon is taked mechanical extracting, and the top layer silver carp is also brought into play the important algae effect that removes simultaneously.This density of Microcystis aeruginosa just is the breakout of water bloom degree that directly influences summer and autumn time period; Microcystis aeruginosa is in high growth from 7-9 month water body, frond is assembled the stage, the wawter bloom feature is obvious, in the water body in every milliliter of the Microcystis aeruginosa density phycobiont quantity reach from ten thousand to 1,000,000 grades, this time period the wawter bloom phenomenon occurs and only situation occurs at following of improvement state not, and effectively ecological management is be in state of a control fully.
(2) hydrocoles monitoring: by qualitative, quantitative analysis to fish, river crab, spiral shell class alimentary canal content and ight soil composition and composition Changing Pattern is directly to save from the food algal rim to analyze control algae effect.Simultaneously help also correctly to judge that blue-green algae distributes in the water body, in a planned way adjust the water body capacity, quantity of animal and kind are controlled the Cutleriales mark in short-term thereby reach.Algae density can be than more Zao appearance and the variation tendency of finding it of water body example monitoring time in the hydrocoles body from monitoring, and this is very important to the early stage control of Microcystis aeruginosa.
The invention has the advantages that, referring to table 2:
1. on the basis in certain adjustable waters of area (2500 mu), administering with long-term prevention and short-term is the principle theory, employing is eliminated blue-green algae (Microcystis aeruginosa, anabena) hypopus based on bottom-dwelling, filter the algae density of ichthyophagy class control water body blue-green algae when the density means taking place in early days and be equipped with mechanical extracting algae mode to force to reduce the district occurred frequently in a large number and be assist remove algae fast.
2. propose river crab first and participated in water body alga-controlling improvement important technical links, designed many approach of filter ichthyophagy class dejection degradation.
3. administer waters closure, manageability; The adjustable water level of extracting reservoir, elevation of water surface is not limit.
Table 2
Embodiment
With 2500 mu of water areas of Baosteel reservoir is example, this reservoir environmental parameter:
(1) most frequent wind direction: reservoir or waters, different areas since long-term prevailing wind to the influence of storehouse stream, current, lake current so that the waters has formed relative immobilized dead angle.The most tangible zone is southwest corner, northeast corner, and this zone must be that blue-green alga bloom breaks out important area this is by the decision of southeaster and southwester.
(2) blue-green algae breaks out main region: any waters, although the water eutrophication composition is even relatively, and the scope of early stage generation of blue-green algae and extensive wawter bloom generation in late period is that certain limitation is arranged, this zonal distribution is the exercising result of environment comprehensive factor, leeward district, waters is the abundantest district of organic matter, blue algae wawter bloom concentration zones, blue-green algae hypopus settling region, early stage blue-green algae body are sprouted the district, this has brought condition more easily for improvement waters wawter bloom, is to administer important step to this zone hydrocoles parameter designing (aquatic mollusk).
Microcystis aeruginosa has tangible come-up sinking rule when the spring and summer early growth, float at night top layer and float to the water bank of frond, and the edge water level of control reservoir is about 1.5 meters, such water level is favourable to the migration and the distribution of spiral shell, this is because spiral shell also has and moves down daytime, moves water bank feature on night.The extensive removed water of spiral shell bank, when facing the Microcystis aeruginosa frond of a large amount of drifts, it can directly filter the food algae, thereby reduces the density of algae and water.
Come when summer, when filter ichthyophagy class come-up surface layer of water is movable in the water body, in general the quantity of sand and mud of water body is less, and silt suspended particle content has important effect to filtering piscivorous feeding habits structure in the water body, if quantity of sand and mud is few, the ight soil of discharging behind the filter ichthyophagy class food algae has last buoyancy, indigested algae is easily spread, aggravation wawter bloom degree.The regulation and control water level allows the envrionment conditions of water body more be easy to generate quantity of sand and mud.The quantity of sand and mud source is except frequently drawing the muddy water, utilize key water site (distance of mud layer and surface layer of water), in conjunction with wind effect (to the disturbance on mud top layer), cause the water body turbidity to strengthen, the silt suspended particle increases, and when a large amount of quantity of sand and mud occurred in the filter ichthyophagy class feeding habits structure, the digestible degree of frond, the density of ight soil all increased, the easier sinking of mud ight soil, the easier death of the frond in mud ight soil.
Specifically select for use referring to table 3,
Table 3
After implementing the technology of the present invention, water body no longer includes blue-green alga bloom but eutrophication (nitrogen, phosphorus) degree does not change.
Ecological remediation and treatment strategy to super-huge lake type (Taihu Lake, Dian Chi, Chaohu etc.) proposition, be to need through long-term an improvement and repair process, the involved more complicated technology of ecological reestablishment difficult point, and the blue-green alga bloom problem that the domestic eutrophication that has many water bodys more to need urgent at short notice solution now to face as sealing reservoir, small-sized lake (below 5000 mu), ornamental artificial lake, switching property river course or the like causes is more more urgent than reducing eutrophy salt with the control blue-green alga bloom.The present invention is this type waters, provides and has solved blue-green alga bloom problem approach in the 1-2.
Claims (7)
1. controllable fast reservior blue-green alga bloom eliminating method comprises,
A. filtering the ichthyophagy class throws in;
B. snail, river crab, Corbicula fluminea, freshwater mussel water body zoobenthos are thrown in and protection, and river crab, snail are to filter ichthyophagy class dejection degradation;
C. water level management is controlled the water level height, and promptly water level and mud bank expose the position, helps stormy waves bed mud disturbance, assurance are filtered the ichthyophagy class to the absorption of quantity of sand and mud and the qualification of snail feeding area.
2. controllable fast reservior blue-green alga bloom eliminating method as claimed in claim 1, it is characterized in that, in the filter ichthyophagy class launch process, dynamically fish for body weight and reach the above individuality of 3000 gram/tails, keep filter ichthyophagy class appropriate size in the water body, guarantee fish faeces integrity in water body, help to control algae and spread again.
3. controllable fast reservior blue-green alga bloom eliminating method as claimed in claim 1 is characterized in that the water body zoobenthos comprises crustaceans, snail, wheel animalcule, protozoon, for the indigested Microcystis aeruginosa ight soil of filter ichthyophagy class eventual degradation provides the foundation.
4. controllable fast reservior blue-green alga bloom eliminating method as claimed in claim 1 is characterized in that, the filter ichthyophagy class release time: annual 1-2 month fry is thrown in.
5. controllable fast reservior blue-green alga bloom eliminating method as claimed in claim 1 is characterized in that, 3.8 meters～4.2 meters of the water level parameters of regulation and control reservoir.
6. controllable fast reservior blue-green alga bloom eliminating method as claimed in claim 1 is characterized in that, 1.3～1.7 meters of the side slope mud bank water level depth of regulation and control reservoir.
7. controllable fast reservior blue-green alga bloom eliminating method as claimed in claim 1 is characterized in that, filters piscivorous density and be 30-50 gram/every cubic metre.
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| 水体治理中鲢鳙生物操纵作用的实验研究. 崔福义，林涛，马放，张立秋.南京理工大学学报（自然科学版），第28卷第6期. 2004 |
| 水体治理中鲢鳙生物操纵作用的实验研究. 崔福义，林涛，马放，张立秋.南京理工大学学报（自然科学版），第28卷第6期. 2004 * |
| 用鲢鳙直接控制微囊藻水华的围隔试验和湖泊实践. 刘建康，谢平.生态科学，第22卷第3期. 2003 |
| 用鲢鳙直接控制微囊藻水华的围隔试验和湖泊实践. 刘建康，谢平.生态科学，第22卷第3期. 2003 * |
| 美国Apopka湖的富营养化及其生态恢复. 古滨河.湖泊科学，第17卷第1期. 2005 |
| 美国Apopka湖的富营养化及其生态恢复. 古滨河.湖泊科学，第17卷第1期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1887742A (en) | 2007-01-03 |
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