CN102303923B - Bionic composite filler, water body purification bionic system, and method for purifying and removing algae - Google Patents

Bionic composite filler, water body purification bionic system, and method for purifying and removing algae Download PDF

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Publication number
CN102303923B
CN102303923B CN2011102408558A CN201110240855A CN102303923B CN 102303923 B CN102303923 B CN 102303923B CN 2011102408558 A CN2011102408558 A CN 2011102408558A CN 201110240855 A CN201110240855 A CN 201110240855A CN 102303923 B CN102303923 B CN 102303923B
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water
framework
bionical
algae
aeration head
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CN102303923A (en
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蒋然
黄少斌
张心凤
韦宗敏
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South China University of Technology SCUT
Pearl River Hydraulic Research Institute of PRWRC
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South China University of Technology SCUT
Pearl River Hydraulic Research Institute of PRWRC
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a bionic composite filler, a water body purification bionic system and a method for purifying and removing algae from the eutrophicated water body. The water body purification bionic system provided by the present invention comprises a rectangular frame or a cubic frame, a bionic composite filler, aeration heads, aquatic plants, zooplanktons and filter-feeding fishes. The bottom surface of the frame is provided with the bionic composite filler. Two layers of the aeration heads are fixed on the frame, wherein the upper layer aeration head is arranged on the position which is above the bionic composite filler, and is 50-80 cm from the bionic composite filler, the lower layer aeration head is arranged on the same plane as the bionic composite filler. The aquatic plants are planted on the upper surface of the frame. With the method for purifying and removing the algae from the eutrophicated water body based on the system, a significant and rapid treatment effect is provided; with applying the technology provided by the present invention on 10-30% water area of the water body requiring treatment, the diversity of the aquatic ecosystem can be restored in 1-3 months; the biomass of the zooplanktons can be increased by more than 50%; the operation cost of the method is low, and the significant economic output is provided during the operating process of the system.

Description

Bionical compounded mix and water body purification bionic system and purification are except the method for algae
Technical field
The present invention relates to algal bloom Pollution abatement field, be specifically related to surface water body (lake, reservoir and river) algal bloom treatment technology, particularly a kind of bionical compounded mix, a kind of water body purification bionic system reach the method for purifying of the hypertrophic water system except algae.
Background technology
The eutrophication of various water bodys (lake, reservoir, city river etc.) is that regional population, economy and social development cause behind certain phase, because the pollution of area source and the endogenous pollution that are difficult to eradicate, even in the situation that sewage discharge is effectively controlled, the pollution of river and eutrophication problem thereof still are difficult to solve.The large-scale outbreak that important sign is exactly algal bloom that body eutrophication is on the rise, control body eutrophication and algal bloom outburst are the targets of water body purification.
The method of administering at present body eutrophication has drainage dirt removal, watercourse aeration, Sediment Dredging, chemical flocculation to process and the biological-ecological recovery technique.The water body algae removal technology develops into bio operon from the chemicals logos except algae, rises to gradually the ecological recovery technology near the natural water self-cleaning.The biological-ecological recovery technique mainly utilizes the coenosis such as microorganism, plankton and the waterplant etc. that consist of the ecosystem in the water body to absorb excessive nitrogen and phosphorus nutrition salt in the conversion water body.Nitrogen phosphorus flows to unbalance, the too much nitrogen phosphorus flow direction take blue-green algae as main plant plankton in the lake of algal bloom.At the good water ecosystem of circulation complicated food chain is arranged, flowing to of nitrogen phosphorus is as follows: microorganism, waterplant, algae (parallel relation) → large-scale or microzooplankton → filter-feeding fish → Piscivorous fishes.Main tool at classical bio operon is zooplankton, and macrozooplankton not only has stronger algae filter food rate, and wider algae predation scope is also arranged simultaneously.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of bionical compounded mix, and this bionical compounded mix is biodegradable filler, can be zooplankton sanctuary is provided, and also can provide the habitat for zoobenthos simultaneously.
Another object of the present invention is to provide the preparation method of above-mentioned bionical compounded mix.
A further object of the present invention is to provide a kind of water body purification bionic system, this system is in the eutrophication water scope, utilizes the common hydrobiont species in native country (zooplankton, zoobenthos, fish etc.) and above-mentioned bionical compounded mix to make up and forms; This system can provide waterplant and fish growth environment at longitudinal space, and the growth consumption Water phosphorus substance by human consumers at different levels reduces even eliminate the generation of wawter bloom.
It is above-mentioned a kind of to the method for purifying of the hypertrophic water system except algae that another purpose of the present invention is to provide.
Purpose of the present invention is achieved through the following technical solutions:
A kind of bionical compounded mix, its center are the hard polyhedron empty balls, and there is hole at the spheroid edge, and urethane strip soft-filler connects the hard polyhedron empty ball by hole;
Described hard polyhedron empty ball specific surface area is about 200-300m 2/ m 3, similar rock wall can be native country zoobenthos (such as the spiral shell bivalves) habitat is provided, and there is micropore on the surface, the easy apposition growth of microbial film.
Zoobenthos mostly is the rimary consumer, take organic debris and algae etc. as food, simultaneously is again the food of the aquatic economic animal such as fish.
Described hard polyhedron empty ball is prepared by following steps:
(1) in the situation that catalytic component based on vanadium exists, get polyester, N-methylmorpholine-N-oxide compound mixes with water, the mass ratio of three kinds of reactants is 90: (2-5): (4-8), 60-80 ℃ of lower stirring reaction 3h obtains hydroxylated polyester;
(2) in the situation of initiator cerium ion and dicumyl peroxide existence, getting hydroxylated polyester mixes with polyethylene polyamine class monomer, the mass ratio of two kinds of reactants is (8-16): 1,90-120 ℃ of lower reaction 5h, obtains the hydroxylated polyester after the modification;
(3) with the hydroxylated polyester after the modification, starch, poly(lactic acid) in mass ratio (10-8): mix at 4: 1,190-230 ℃ of lower reaction 7-10h, obtain the different bio-degradable plastics of physical strength, by plastic working program extrusion molding commonly used, obtain having the hard polyhedron empty ball of edge hole again;
Step (2) the preferred tetraethylene pentamine of described polyethylene polyamine class monomer or triethylene diamine.
Described urethane strip soft-filler is prepared by following steps:
Step (1)-(2) are with hard polyhedron empty ball preparation method's step (1)-(2);
(3) hydroxylated polyester after the modification, starch, poly(lactic acid) are pressed (8-5): (3-2): 1 mass ratio mixes, and adding accounts for the whipping agent of three's total mass 0.5-1%, 150-170 ℃ of lower reaction 2-8h, obtain the polyester soft-filler, by the extrusion molding of plastic working program and cutting commonly used, obtain urethane strip soft-filler again.
Above-mentioned bionical compounded mix is to be connected with urethane strip soft-filler and to be obtained by the hard polyhedron empty ball.
Urethane strip soft-filler proportion is about 1, and porosity is 80-150%, can be suspended in the water, under flow action, shakes as pasture and water, can be zooplankton sanctuary is provided, and reduces fish to their predation.This filler has about 20 years life-span under water body environment, and the energy complete biodegradable, does not cause the secondary pollution to environment.
Cladocera Daphnia magna class sfgd. mainly contains hypoxemia, the low light level, pasture and water or other and keeps away and protect institute etc. in the zooplankton.
A kind of water body purification bionic system comprises a rectangular parallelepiped or square framework, bionical compounded mix, aeration head, waterplant, zooplankton and filter-feeding fish; Above-mentioned bionical compounded mix is installed in the bottom surface of framework, the scalable adjusting of length around the framework, in order to the bionical compounded mix of regulating the framework bottom surface height apart from the water surface, in the different weather of intensity of illumination, can regulate the light intensity of bionical compounded mix position, to reach the purpose of protection zooplankton; Aerating system adopts micro porous aeration head, lay altogether up and down two-layer micro porous aeration head, the upper strata micro porous aeration head is laid in 50-80cm place, top, bionical compounded mix center, lower floor's micro porous aeration head is laid on the isoplanar of bionical compounded mix, two-layer aeration head is fixed by pvc pipe and framework, adopt respectively two aerators to be filled with air, the dissolved oxygen of different concns is provided; The upper surface of framework is divided into some rectangles with hollow plastic pipe, in hollow plastic pipe with the fixing planting tray of rope, planting aquatic plants; The composition of water body purification bionic system as depicted in figs. 1 and 2;
Described waterplant is eel grass and/or the fire hose;
Described rectangular parallelepiped or square framework are made take engineering plastics pipe as material.
The above-mentioned bionical ecosystem because the growth place of zooplankton, waterplant and fish is provided, for the too much water body of algae, can start purification fast, forms the eucyclic water body purification system of nutritive salt.
A kind of to the method for purifying of the hypertrophic water system except algae, may further comprise the steps:
(1) mark a scope in pending eutrophication water, the water surface area of this scope is the 10-30% of pending eutrophication water water surface area; Fence up (zooplankton of throwing in after avoiding escapes from this scope) enclosing grid with water proof around this scope, put into a rectangular parallelepiped or square framework, above-mentioned bionical compounded mix is installed in the bottom surface of framework; The scalable adjusting of length around the framework, in order to the bionical compounded mix of regulating the framework bottom surface height apart from the water surface, in the different weather of intensity of illumination, the light intensity that can regulate bionical compounded mix position is to reach the purpose of protection zooplankton; Aerating system adopts micro porous aeration head, lay altogether up and down two-layer micro porous aeration head, the upper strata micro porous aeration head is laid in 50-80cm place, top, bionical compounded mix hard center, lower floor's micro porous aeration head is laid on the isoplanar of bionical compounded mix, two-layer aeration head is fixed by pvc pipe and framework, adopt respectively two aerators to be filled with air, the dissolved oxygen of different concns is provided; The upper surface of framework is divided into some rectangles with hollow plastic pipe, and with the fixing planting tray of rope, plantation eel grass, the fire hose etc. are as waterplant in hollow plastic pipe, and the upper surface of framework also connects the sealing beverage bottle as buoy;
(2) in the framework water body, add the biological reinforced liquid of combination, open simultaneously aerating system, process after 5 days, enter step (3);
The described biological reinforced liquid of combination that adds in the framework water body is every m 3Water body adds 0.2-1.5L and makes up biological reinforced liquid;
The preparation method of the biological reinforced liquid of described combination is:
Blue-green algae bacterial strain Microcystis viridis (LJ2001170718 is available from hydrobiont institute of Ji'nan University) is inoculated in the nutrient solution, and initial inoculation concentration is about 10 4~10 5Individual/L; Postvaccinal nutrient solution is placed 25 ℃, the every 12h light and shade cycle cultivation of 2000lux fluorescent lamp, treat that blue-green algae concentration reaches 10 in the nutrient solution 8~10 9Individual/during L, the nutrient solution of this moment is called high algae liquid, the zooplankton (large-scale branch angle, small-sized branch angle, copepods, rotifers) that is divided into four classes is dropped in the nutrient solution, respectively domestication, the initial seston density of throwing in is 50-200/L, when chlorophyll concentration is lower than 30mg/L or Microcystin and is lower than 15ug/L, replace again 1/3rd stoste with high algae liquid equivalent, tame again 20d; Then get pending eutrophication water and replace 1/3rd stoste as nutrient solution equivalent, after pending eutrophication water is cultivated through 20d, with the Planktont counting in the pending high algae sewage, be mixed with the biological reinforced liquid of combination;
Described nutrient solution composed as follows: every liter of nutrient solution contains 100mg NaNO 3, 15mg K 2HPO 4, 85mg MgSO 47H 2O, 40mg CaCl 22H 2O, 25mg Na 2CO 3, 8mg ironic citrate, 1mgNa 2EDTA2H 2O, surplus is water;
The content of zooplankton is 2.2-2.8g/L in the biological reinforced liquid of described combination, and surplus is water;
Described zooplankton is by the square reticulate pattern Magna of large-scale cladocera zooplankton (Ceriodaphnia quadrangula), small-sized cladocera zooplankton cornicult reticulate pattern Magna (Ceriodaphnia cornuta), big-and-middle-sized copepods (Sinocalanus tenellus Sinocalanus tenellus., Schmackeria poplesia Schmackeria poplesia), wheel animalcule (lazy wheel animalcule Rotaria tardigrada, gyalectiform arm tail wheel Brachionus urceus) according to 10: (5-7): (2-4): 1 number is than forming; According to the wawter bloom degree of water body, if water body Determination of Chlorophyll concentration greater than 60mg/L, then the number ratio of above-mentioned four class zooplanktons can be adjusted to (12-15): 5: 2: 1.
The composition that makes up zooplankton in the biological reinforced liquid is mainly based on the unbalance of structure of zooplankton in eutrophic lake and adjust peculiar dominant species, and the species ratio obtains aforementioned proportion according to the previous experiments chamber to the competition between species and conspiracy relation.Owing to be subject to the impact of blue-green alga bloom, Zooplankton Community generally all is comprised of small-sized kind (belonging to such as wheel animalcule and trunk Magna) and selectivity predation class zooplankton (such as Cyclop) in the eutrophication water, and opposite large-scale, indiscriminate plant eater (such as the Magna genus) is relative rareness then.
Described unlatching aerating system, the upper strata aeration head provides low-oxygen environment (DO=0.2-0.4mg/L), with suitable zooplankton growth, provides aerobic environment (DO=1.5-4mg/L) around lower floor's aeration head, with suitable aerobic ammonia oxidation bacterial growth, be beneficial to the removal of ammonia-state nitrogen.
(3) to water body sampling microscopy, when the density of zooplankton meets or exceeds 2500/L, folding encloses grid except water proof around the water body, enclose the grid bottom and change netted nylon wire into, original grid that enclose are pending part eutrophication water and the biological reinforced liquid of combination that adds, and open system can be beneficial to biological looking for food all around, throws in local snail and filter-feeding fish (chain fish, bighead etc.) again, after one month, the water quality of eutrophication water has clear improvement.
The present invention has following advantage and effect with respect to prior art:
(1) the present invention uses bionical compounded mix, and the aquatic system species diversity that plays a crucial role for the purification of eutrophication water provides habitat and sanctuary.Bionical compounded mix center is the hard polyhedron empty ball, and urethane strip soft-filler connects hollow ball by hole.The existing part that is similar to rock wall of bionical compounded mix can be native country zoobenthos (such as snail) habitat is provided, and there is micropore on the surface, the easy apposition growth of microbial film; Have simultaneously the soft-filler that suspends in water, the direct ingester-macrozooplankton that can be algae provides sanctuary.This filler has adopted eco-friendly raw material development, can degrade under physical environment after 1 year in stable use, reduces the secondary pollution to environment.
(2) the present invention adopts aeration rate and the adjustable method of light intensity, can simulate suitable planktonic growing environment, can make rapidly unbalance aquatic system recover benign cycle.
(3) for zooplankton type and the structure in different waters, the native country zooplankton is carried out can strengthening zooplankton to the removal ability of ingesting of algae to the method for algae toxin tolerance domestication cultivation with enrichment culture.Avoid throwing in the functional biological preparation and cause and to invade by alien species, have the Biosafety guarantee that water bloom of water body is removed.
(4) working cost is low, and obvious economic benefit output is arranged in system's operational process.Running cost is mainly used in two-layer aeration different dissolved oxygen environment is provided.Nitrogen and phosphorous nutrient arrives waterplant and fish by food chain transport.Can obtain economic benefit by the results of plantation economic waterplant (such as aquatic vegetable) and economic fish.
(5) treatment effect of the present invention is rapid, implements this technology at the 10-30% of staying water water surface area, can recover at 1-3 month the diversity of aquatic ecosystem, and the biomass of zooplankton increases more than 50%.
Description of drawings
Fig. 1 is the composition synoptic diagram (rip cutting figure) of bionical aquatic ecosystem in the eutrophication water;
Fig. 2 is the composition synoptic diagram (aerial view) of bionical aquatic ecosystem in the eutrophication water;
Wherein, 1-green plants, 2-aeration head, the bionical compounded mix of 3-(with microbial film), 4-fish, 5-zooplankton.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment 1
The preparation method of bionical compounded mix may further comprise the steps:
The first step, preparation hard polyhedron empty ball (about 10kg) may further comprise the steps:
(1) in the situation that catalytic component based on vanadium (500g) exists, get polyester (LG-DOW, PU350), N-methylmorpholine-N-oxide compound mixes with water, the mass ratio of three kinds of reactants is 90: 2: 8,70 ℃ of lower stirring reaction 3h obtain hydroxylated polyester;
(2) in the situation of initiator cerium ion (100g) and dicumyl peroxide (450g) existence, get hydroxylated polyester and tetraethylene pentamine (German BASF BASF, E1500) mix, the mass ratio of two kinds of reactants is 10: 1,110 ℃ of lower reaction 5h obtain the hydroxylated polyester after the modification;
(3) hydroxylated polyester after the modification, starch, poly(lactic acid) are mixed in mass ratio at 10: 4: 1,220 ℃ of lower reaction 10h, obtain the different bio-degradable plastics of physical strength, by plastic working program extrusion molding commonly used, obtain having the hard polyhedron empty ball of edge hole again.
Second step, preparation urethane strip soft-filler (about 1kg) may further comprise the steps:
(1) in the situation that catalytic component based on vanadium (20g) exists, get polyester (LG-DOW, PU350), N-methylmorpholine-N-oxide compound mixes with water, the mass ratio of three kinds of reactants is 90: 2: 8,70 ℃ of lower stirring reaction 3h obtain hydroxylated polyester;
(2) in the situation of initiator cerium ion (80g) and dicumyl peroxide (50g) existence, get hydroxylated polyester and triethylene diamine (German BASF BASF, E1800) mix, the mass ratio of two kinds of reactants is 15: 1,120 ℃ of lower reaction 4h obtain the hydroxylated polyester after the modification;
(3) hydroxylated polyester after the modification, starch, poly(lactic acid) are mixed by 5: 3: 1 mass ratio, and adding accounts for whipping agent (the Nanjing card Neil of three's total mass 0.8%, CFS), 170 ℃ of lower reaction 5h, obtain the polyester soft-filler, by the extrusion molding of plastic working program and cutting commonly used, obtain urethane strip soft-filler again.
The 3rd step, connect into bionical compounded mix with hard polyhedron empty ball and urethane strip soft-filler are manual.
Embodiment 2
A kind of water body purification bionic system comprises bionical compounded mix, aeration head, waterplant, zooplankton and filter-feeding fish that a rectangular parallelepiped or square framework, embodiment 1 prepare; Above-mentioned bionical compounded mix is installed in the bottom surface of framework, the scalable adjusting of length around the framework, in order to the bionical compounded mix of regulating the framework bottom surface height apart from the water surface, in the different weather of intensity of illumination, can regulate the light intensity of bionical compounded mix position, to reach the purpose of protection zooplankton; Aerating system adopts micro porous aeration head, lay altogether up and down two-layer micro porous aeration head, the upper strata micro porous aeration head is laid in 50-80cm place, top, bionical compounded mix center, lower floor's micro porous aeration head is laid on the isoplanar of bionical compounded mix, two-layer aeration head is fixed by pvc pipe and framework, adopt respectively two aerators to be filled with air, the dissolved oxygen of different concns is provided; The upper surface of framework is divided into some rectangles with hollow plastic pipe, in hollow plastic pipe with the fixing planting tray of rope, planting aquatic plants; The composition of water body purification bionic system as depicted in figs. 1 and 2.
Embodiment 3
A kind of to the method for purifying of the hypertrophic water system except algae
Place, the testing ground water surface 100,000m 3The pool, admit sanitary sewage 50m every day 3, summer and autumn blue-green algae take place frequently.Pool water before processing is taken a sample according to the method for surface water water environment evaluation and is detected, and water quality is bad five classes.
(1) marking a water surface area in the pool is 10,000m 3Scope, with enclosing grid with water proof and fence up around this scope, make the framework of 100m * 50m * 6m (length * wide * height) with engineering plastics pipe and put into this scope water body, frame area accounts for 5% of pool area.
The bionical compounded mix that embodiment 1 prepares is installed in bottom at framework.The center of bionical compounded mix is the hard polyhedron empty ball, and the spheroid edge is porose, and urethane strip soft-filler connects the hard spheroid by hole.The specific surface area of hard polyhedron empty ball is about 250m 2/ m 3Urethane strip soft-filler proportion is about 1, and porosity is 80-150%, can be suspended in the water.
Framework can be regulated bionical compounded mix apart from the height of the water surface in the scope of distance water surface 6-0.5m, the cloudy day is adopted the filler immovable bed degree of depth apart from water surface 1-3m, and sunny day adopts the filler immovable bed degree of depth apart from water surface 4-6m.Aerating system adopts micro porous aeration head, lay altogether up and down two-layer micro porous aeration head, the upper strata micro porous aeration head is laid in 50-80cm place, top, bionical compounded mix center, lower floor's micro porous aeration head is laid on the isoplanar of bionical compounded mix, two-layer aeration head is fixed by pvc pipe and framework, adopt respectively two aerators to be filled with air, the dissolved oxygen of different concns is provided; The upper surface of framework is divided into some rectangles with hollow plastic pipe, and with the fixing planting tray of nylon rope, plantation eel grass, the fire hose etc. are as waterplant in hollow plastic pipe, and the upper surface of framework also connects the empty beverage bottle of sealing as buoy.
(2) in the framework water body, add the biological reinforced liquid of combination, every m 3Water body adds 1.5L and makes up biological reinforced liquid, and the content that makes up zooplankton in the biological reinforced liquid is 2.2-2.8g/L, and surplus is water;
The preparation method of the biological reinforced liquid of described combination is:
Blue-green algae bacterial strain Microcystis viridis (LJ2001170718 is available from hydrobiont institute of Ji'nan University) is inoculated in the nutrient solution, and initial inoculation concentration is about 10 4~10 5Individual/L; Postvaccinal nutrient solution is placed 25 ℃, the every 12h light and shade cycle cultivation of 2000lux fluorescent lamp, treat that blue-green algae concentration reaches 10 in the nutrient solution 8~10 9Individual/during L, the nutrient solution of this moment is called high algae liquid, the zooplankton (large-scale branch angle, small-sized branch angle, copepods, rotifers) that is divided into four classes is dropped in the nutrient solution, respectively domestication, the initial seston density of throwing in is 50-200/L, when chlorophyll concentration is lower than 30mg/L or Microcystin and is lower than 15ug/L, replace again 1/3rd stoste with high algae liquid equivalent, tame again 20d; Then get pending eutrophication water and replace 1/3rd stoste as nutrient solution equivalent, after pending eutrophication water is cultivated through 20d, with the Planktont counting in the pending high algae sewage, be mixed with the biological reinforced liquid of combination;
Described nutrient solution composed as follows: every liter of nutrient solution contains 100mg NaNO 3, 15mg K 2HPO 4, 85mg MgSO 47H 2O, 40mg CaCl 22H 2O, 25mg Na 2CO 3, 8mg ironic citrate, 1mgNa 2EDTA2H 2O, surplus is water;
Described zooplankton is by the square reticulate pattern Magna of large-scale cladocera zooplankton (Ceriodaphnia quadrangula), small-sized cladocera zooplankton cornicult reticulate pattern Magna (Ceriodaphnia cornuta), big-and-middle-sized copepods (Sinocalanus tenellus Sinocalanus tenellus. and/or Schmackeria poplesia Schmackeria poplesia), wheel animalcule (lazy wheel animalcule Rotaria tardigrada and/or gyalectiform arm tail wheel Brachionus urceus) is according to 10: (5-7): (2-4): 1 number is than forming; According to the wawter bloom degree of water body, if water body Determination of Chlorophyll concentration greater than 60mg/L, then the number ratio of above-mentioned four class zooplanktons can be adjusted to (12-15): 5: 2: 1.
When in the framework water body, adding the biological reinforced liquid of combination, open aerating system, provide low-oxygen environment (DO=0.2-0.4mg/L) in the 50-80cm of top, bionical compounded mix hard center, with suitable zooplankton growth, aerobic environment (DO=1.5-4mg/L) is provided around the filler hard center, with suitable aerobic ammonia oxidation bacterial growth, be beneficial to the removal of ammonia-state nitrogen; The aeration of system moves 18 hours every day, realizes intermittent aeration, and every interval aeration 2 hours stops 2.5 hours, and power switch adopts Preset Time, need not manual operation.Process after 5 days, enter purifying treatment subordinate phase (being step (3)).
(3) to water body sampling microscopy, when the density of zooplankton meets or exceeds 2500/L, folding encloses grid except water proof around the water body, enclose the grid bottom and change netted nylon wire into, open system can be beneficial to biological looking for food all around, throw in the fish (chain fish, bighead etc.) of local snail and filter-feeding, this stage is still according to the aeration scheme aeration of fs (being step (2)) again.
The purifying treatment subordinate phase was processed after 60 days, and the pool water-quality guideline is as follows: COD=20.3mg/L, ammonia nitrogen=0.21mg/L, total phosphorus=0.02mg/L, turbidity=0.4NTU, dissolved oxygen>4.5mg/L.Ammonia nitrogen and total phosphorus are the leading indicators of body eutrophication, illustrate that thus the method is specially adapted to the restoration of the ecosystem of middle-size and small-size eutrophication water.
The working cost of the inventive method is 0.25~0.5 yuan/day, and working cost is low.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (9)

1. bionical compounded mix, it is characterized in that: its center is the hard polyhedron empty ball, and there is hole at the spheroid edge, urethane strip soft-filler connects the hard polyhedron empty ball by hole;
Described urethane strip soft-filler is prepared by following steps:
(1) in the situation that catalytic component based on vanadium exists, get polyester, N-methylmorpholine-N-oxide compound mixes with water, the mass ratio of three kinds of reactants is 90:(2-5): (4-8), 60-80 ℃ of lower stirring reaction 3h obtains hydroxylated polyester;
(2) in the situation of initiator cerium ion and dicumyl peroxide existence, getting hydroxylated polyester mixes with polyethylene polyamine class monomer, the mass ratio of two kinds of reactants is (8-16): 1,90-120 ℃ of lower reaction 5h, obtains the hydroxylated polyester after the modification;
(3) hydroxylated polyester after the modification, starch, poly(lactic acid) are pressed (8-5): (3-2): 1 mass ratio mixes, and adding accounts for the whipping agent of three's total mass 0.5-1%, 150-170 ℃ of lower reaction 2-8h, obtain the polyester soft-filler, by extrusion molding and cutting, obtain urethane strip soft-filler again.
2. bionical compounded mix according to claim 1, it is characterized in that: described hard polyhedron empty ball is prepared by following steps:
(1) in the situation that catalytic component based on vanadium exists, get polyester, N-methylmorpholine-N-oxide compound mixes with water, the mass ratio of three kinds of reactants is 90:(2-5): (4-8), 60-80 ℃ of lower stirring reaction 3h obtains hydroxylated polyester;
(2) in the situation of initiator cerium ion and dicumyl peroxide existence, getting hydroxylated polyester mixes with polyethylene polyamine class monomer, the mass ratio of two kinds of reactants is (8-16): 1,90-120 ℃ of lower reaction 5h, obtains the hydroxylated polyester after the modification;
(3) with the hydroxylated polyester after the modification, starch, poly(lactic acid) in mass ratio (10-8): 4:1 mixes, 190-230 ℃ of lower reaction 7-10h, and again extrusion molding of the material that obtains obtains the hard polyhedron empty ball.
3. the preparation method of claim 1 or 2 described bionical compounded mixs is characterized in that: be the hard polyhedron empty ball is connected with urethane strip soft-filler and obtains.
4. a water body purification bionic system is characterized in that: comprise a rectangular parallelepiped or square framework, claim 1 or 2 described bionical compounded mixs, aeration head, waterplant, zooplankton and filter-feeding fish; Bionical compounded mix is installed in the bottom surface of framework; The scalable adjusting of length around the framework; Be fixed with two-layer aeration head on the framework, the upper strata aeration head is laid in 50-80cm place, top, bionical compounded mix center, and lower floor's aeration head is laid on the isoplanar of bionical compounded mix; The upper surface of framework is divided into some rectangles with hollow plastic pipe, in hollow plastic pipe with the fixing planting tray of rope, planting aquatic plants.
One kind to purifying of the hypertrophic water system except the method for algae, it is characterized in that may further comprise the steps:
(1) in pending eutrophication water, marks a scope; Fence up enclosing grid with water proof around this scope, put into a rectangular parallelepiped or square framework, claim 1 or 2 described bionical compounded mixs are installed in the bottom surface of framework; Fix two-layer aeration head at framework, the upper strata aeration head is laid in 50-80cm place, top, bionical compounded mix center, and lower floor's aeration head is laid on the isoplanar of bionical compounded mix; The upper surface of framework is divided into some rectangles with hollow plastic pipe, in hollow plastic pipe with the fixing planting tray of rope, planting aquatic plants;
(2) add the biological reinforced liquid of combination in the framework water body, open simultaneously aeration head oxygen supply in the water body;
(3) when the density of zooplankton in the framework water body meets or exceeds 2500/L, folding encloses grid except water proof around the water body, throws in filter-feeding fish again;
The content of zooplankton is 2.2-2.8g/L in the biological reinforced liquid of the described combination of step (2), and surplus is water;
The preparation method of the biological reinforced liquid of the described combination of step (2) is:
The blue-green algae bacterial strain is inoculated in the nutrient solution, and initial inoculation concentration is 10 4~10 5Individual/L; Postvaccinal nutrient solution is placed 25 ℃, the every 12h light and shade cycle cultivation of 2000lux fluorescent lamp, treat that blue-green algae bacterial strain concentration reaches 10 in the nutrient solution 8~10 9Individual/during L, the nutrient solution of this moment is called high algae liquid, the zooplankton that is divided into four classes is dropped in this nutrient solution, cultivate respectively, the initial seston density of throwing in is 50-200/L, when nutrient solution Determination of Chlorophyll concentration is lower than 30mg/L or Microcystin and is lower than 15ug/L, replace again 1/3rd stoste with high algae liquid equivalent, cultivate again 20d; Then get pending eutrophication water and replace 1/3rd stoste as nutrient solution equivalent, cultivate 20d again after, with Planktont counting, be mixed with the biological reinforced liquid of combination;
Described zooplankton by square reticulate pattern Magna, cornicult reticulate pattern Magna, big-and-middle-sized copepods, rotifers animal according to 10:(5-7): (2-4): 1 mass ratio forms; If water body Determination of Chlorophyll concentration is greater than 60mg/L, the mass ratio of above-mentioned four class zooplanktons is adjusted into (12-15): 5:2:1;
Described big-and-middle-sized copepods is Sinocalanus tenellus and/or Schmackeria poplesia;
Described rotifers animal is lazy wheel animalcule and/or gyalectiform arm tail wheel.
6. according to claim 5 to the method for purifying of the hypertrophic water system except algae, it is characterized in that: the water surface area of the described scope of step (1) is the 10-30% of pending eutrophication water water surface area.
7. according to claim 5 to the method for purifying of the hypertrophic water system except algae, it is characterized in that: step (2) is described to add the biological reinforced liquid of combination in the framework water body, be every m 3Water body adds 0.2-1.5L and makes up biological reinforced liquid.
8. according to claim 5 to the method for purifying of the hypertrophic water system except algae, it is characterized in that: the oxygen supply in the water body of the described unlatching aeration head of step (2), its at the middle and upper levels the dissolved oxygen concentration that provides of aeration head be 0.2-0.4mg/L, the dissolved oxygen concentration that lower floor's aeration head provides is 1.5-4mg/L.
According to claim 5 to purifying of the hypertrophic water system except the method for algae, it is characterized in that: described nutrient solution composed as follows: every liter of nutrient solution contains 100mg NaNO 3, 15mg K 2HPO 4, 85mgMgSO 47H 2O, 40mg CaCl 22H 2O, 25mg Na 2CO 3, 8mg ironic citrate, 1mgNa 2EDTA2H 2O, surplus is water.
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