CN100497522C - Modifying agent for bottom material of pond for breeding aquatic products - Google Patents

Modifying agent for bottom material of pond for breeding aquatic products Download PDF

Info

Publication number
CN100497522C
CN100497522C CNB2007100225202A CN200710022520A CN100497522C CN 100497522 C CN100497522 C CN 100497522C CN B2007100225202 A CNB2007100225202 A CN B2007100225202A CN 200710022520 A CN200710022520 A CN 200710022520A CN 100497522 C CN100497522 C CN 100497522C
Authority
CN
China
Prior art keywords
pond
water
aquaculture
sediment
bottom material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2007100225202A
Other languages
Chinese (zh)
Other versions
CN101050365A (en
Inventor
吴伟
陈家长
瞿建宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
Original Assignee
Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences filed Critical Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
Priority to CNB2007100225202A priority Critical patent/CN100497522C/en
Publication of CN101050365A publication Critical patent/CN101050365A/en
Application granted granted Critical
Publication of CN100497522C publication Critical patent/CN100497522C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

This invention relates to a sediment improver for aquaculture pond. The sediment improver comprises sodium percarbonate, humus soil, poly (ferric sulfate), attapulgite soil, and zeolite powder. The sediment improver is produced by: weighing the above components, packaging sodium percarbonate alone, mixing the other components, packaging, and sealing the two packages in a big package. The net content of each big package is 1 kg. The sediment improver has such advantages as convenient usage, no environmental influence, low usage amount, rapid acting and stable effect. The sediment improver can obviously reduce the contents of harmful substances in pond bottom, improve the environmental quality of pond sediment and the living condition of aquaculture creatures, prevent diseases and abrupt death of aquaculture creatures, and increase the yield and quality of aquaculture creatures.

Description

A kind of modifying agent for bottom material of pond for breeding aquatic products
Technical field
The present invention relates to a kind of modifying agent for bottom material of pond for breeding aquatic products, belong to technical field of aquaculture.
Background technology
Since the reform and opening-up, the culture fishery of China has obtained the development of advancing by leaps and bounds, and becomes the fishery big country that unique in the world cultured output surpasses fishery output.In the culture fishery of China, pond aquaculture has occupied critical role.It is traditional aquaculture model of technical characterictic that existing pond aquaculture has acted on " close, mixed, wheel " mostly, promptly obtains the aquaculture model of high yield with many kinds, high-density, heavy dressing bait throwing in.In order to improve the cultured output of unit of water body, high yield covets, often increase water nutrition excessively, excessively bait throwing in, fertilising and increasing breeding density, cause nitrogen in the water, phosphorus surge, transparency descends, water quality deterioration, the bait in the water body and the metabolite of breed variety accumulate in pond bottom in a large number, and substrate pollution is serious.Excessive organic matter decomposition not only consumes the dissolved oxygen in the water body in water body and the substrate, make water body environment be in anoxic condition, also discharge many objectionable impuritiess simultaneously, as ammonia nitrogen, nitrite and hydrogen sulfide etc., endanger the aquaculture organism in the water body directly or indirectly, make that species diversity descends in the aquaculture water, the breed of high-quality aquatic products kind is subjected to the restriction of water quality and food organism.The water body natural, ecological is destroyed, and the disease of aquatic animal takes place frequently in the pond, and fishery loss is huge.In order to prevent disease, in the whole culture-cycle, all using the fish medicine at present.Though the use of fish medicine has obtained the effect of emergence therapeutic, brought such as resistance more, in fishery products and environment, accumulated ecological consequences such as residual.Therefore from ecological angle, although cultivating pool is a very complicated aquatic ecosystem, no matter how complicated it is, mainly be the equilibrium relationship between hydrobiont-cause of disease-environment three, be a problem of environment after all.The control of ecological environment of cultivating pool has become the key issue of development China pond aquaculture.
The good and bad key of pond eco-environmental quality is the bottom material of pond for breeding environment, and it has determined the variation of pond water quality.Most residual bait, biological metabolic product, hard-degraded substance (as heavy metal) accumulate in pond bottom in a large number, make the anaerobic environment that is in a reductibility at the bottom of the pond for a long time, and biotic population is based on anaerobion.Secular anaerobic environment makes objectionable constituent such as pond bottom ammonia nitrogen, hydrogen sulfide, methane produce in a large number, and it can enter in the water body once more by processes such as precipitation-solubilizing reaction, water body stirring and exchanges, causes the secondary pollution of water body.Therefore the improvement to base of aquatic cultivation pool seems very important.
Prior art mainly is to utilize sorbent materials such as zeolite powder, oyster shell whiting, diatomite and microbial preparation that bottom material of pond for breeding is handled and purified, and these processing modes have certain effect.But the mechanism of action of sorbent material mainly is a physical method, and its adsorption effect is subjected to the influence of environmental factor more obvious, and usage quantity is bigger, and every meter depth of water consumption of general every mu of water surface is at 5~15 kilograms.And the use of microbial preparation is subjected to the factor affecting such as kind, activity and water body dissolved oxygen of microorganism bigger, and action effect is slower and unstable.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of modifying agent for bottom material of pond for breeding aquatic products is provided, utilize chemical substances such as oxygenant, complexing agent, sorbent material, through assembly rationally, to reduce in the bottom material of pond for breeding to the deleterious composition of aquaculture organism, ecotope at the bottom of the reparation pond prevents secondary pollution of water fast, is that aquaculture organisms is built a good water body environment.
Main solution of the present invention is achieved in that
It forms proportioning percentage ratio meter by weight modifying agent for bottom material of pond for breeding aquatic products of the present invention:
SPC-D is among the present invention: 15%~20%, vegetable mould is: 5%~10%, bodied ferric sulfate is: 30%~40%, attapulgite is: 10%~20%, zeolite powder is: 10%~20%, said components is weighed in proportion, and SPC-D is packed separately, and other composition mixes the back packing.
Compared with the prior art the present invention has the following advantages:
The present invention utilizes the number of chemical composition harmless to aquaculture organisms, by chemical oxidation effect, complexing action, precipitating action, improve fast redox potential at the bottom of the pond, increase oxygen content at the bottom of the pond, transform various objectionable constituent, build the pond ecotope that helps aquaculture organism existence and growth; Modifying agent for bottom material of pond for breeding of the present invention is easy to use, is not subjected to the influence of envrionment conditions, and usage quantity is little, and the consumption of every meter depth of water of every mu of water surface only is 1 kilogram; Use back instant effect and effect stability, can significantly reduce content of harmful such as ammonia nitrogen at the bottom of the pond, nitrite, hydrogen sulfide, improve the environmental quality of bottom material of pond for breeding, improve the aquaculture organism life condition, effectively prevent aquaculture organism disease and sudden death, improve the output and the quality of aquaculture organism.
Embodiment
Following the present invention will be further described in conjunction with the embodiments:
Its set of dispense of modifying agent for bottom material of pond for breeding aquatic products of the present invention is than (percentage ratio meter by weight):
Embodiment one:
Getting SPC-D in the embodiment of the invention is: 20%, and vegetable mould is: 5%, bodied ferric sulfate is: 40%, attapulgite is: 20%; Zeolite powder is: 15%.Above-mentioned each raw material is weighed respectively in the ratio of gross weight 1Kg, and SPC-D is packed separately, and other composition mixes the back packing at normal temperatures.Then two packings are packed into and seal after the big packing bag, at last the vanning warehouse-in.
The action principle of each component is as follows among the present invention:
1, SPC-D: SPC-D is commonly called as the solid hydrogen peroxide, is the addition compound of hydrogen peroxide and yellow soda ash, and molecular formula is 2Na 2CO 33H 2O 2, molecular weight is 314.07.SPC-D produces oxygen and yellow soda ash after meeting water decomposition, and its effective active content is equivalent to 27.5% hydrogen peroxide.SPC-D not only has the function of liquid hydrogen peroxide, discharges that oxygen is realized oxygenation, decontamination, sterilization, function such as eliminate the unusual smell thereby decompose rapidly under lower water temperature, and decomposes simultaneously and generate yellow soda ash.Yellow soda ash can improve the pH value of bottom material of pond for breeding, reduces the metal ion content in water quality and the substrate.The resolvent of SPC-D is oxygen, water and yellow soda ash, is naturally occurring material, and environment is not had any negative impact.
The used SPC-D of the present invention is the small-particle type, but to guarantee that its rapid subsidence is to pond bottom.Its action principle is to increase dissolved oxygen content at the bottom of the pond, improve redox potential, dislikes the organic constituent that loses at the bottom of the oxidation pond, eliminates stench, kills the part unwanted bacteria, some metal ions of antagonism.
2, vegetable mould: the earth that is rich in humic acid or soil ulmin is vegetable mould.Vegetable mould extensively is present in earth surface, is the modal organic carbon of nature.Most of soil ulmin links to each other with inorganicss such as clay, oxide compounds, and small portion is dissolved in the soil solution, and especially alkaline soil is typical vegetable mould.Some rudimentary colliery also deserves to be called kind humous even.The chemical structure of humic acid is very complicated, and is mainly bigger by many kinds of molecular weight, and the aromatics that has an indefinite number carboxyl mixes.Geochemical conditions when difference depends mainly on its generation therebetween, these conditions at first are environment, water, heat, next is the degree that the humic acid acidization is finished, last then kind content and existences various chemical elements in media water-bearing layer, settling or the soil when being decided by that humic acid forms.
According to composition analysis, contain elements such as carbon, hydrogen, oxygen, nitrogen in the vegetable mould, aromatic proton, hydroxyl, carboxyl, carbonyl, quinonyl, methoxyl group isoreactivity functional group.These active groups have determined vegetable mould to have slightly acidic, wetting ability, ion exchangeable, chelating, oxidation-reduction quality and physiologically active etc.
The present invention mainly utilizes ion exchangeable humous, chelating and oxidation-reduction quality, removes heavy metal, ammonia and some reducing substanceses in the cultivating pool substrate.
3, bodied ferric sulfate: bodied ferric sulfate (being called for short poly-iron or SPFS), molecular formula is [Fe 2(OH) n(SO 4) 3-n/2] mMorphological characters is faint yellow unformed powdery solid, and is very easily water-soluble, belongs to the novel high-efficiency environment friendly water purification agent.Poly-iron dust is in the molysite inorganic polymer flocculant, can be fast in and the negative charge of water-borne glue body microparticle surfaces, can build bridge or play adsorption and produce throwing out at interionic again.The throw out that produces than great, settling velocity is fast, demonstrates good coagulation effect, compares with other inorganic flocculating agents to have higher detergent power, is widely used in the purifying treatment of tap water, various process water, trade effluent, municipal effluent.These product performance are stable, purifying water effect is good, do not contain objectionable impuritiess such as heavy metal ion, have decolouring, deodorization, de-oiling, degerming, remove multiple efficacies such as heavy metal ion in the water, radioactive substance and carcinogens, to the clearance of COD, BOD and colourity up to more than 90%; Excellent to low temperature and low turbidity water and high turbidity purificating raw water effect.Easy to use, with low cost.
The present invention is used to be solid ferric polysulfate, and major function is to remove organism, hydrogen sulfide.
4, zeolite powder: zeolite is the general name of zeolite family mineral, is the manosil AS mineral of a kind of aqueous basic metal or alkaline-earth metal.Density of zeolite is 1.92~2.8g/m 3, Morse hardness 3.5~5.57, color is more shallow, mostly is white, pale yellow, light green, pale red, light brown.Ion-exchange performance is one of critical nature of zeolite.Positively charged ion such as K, Na, Ca and water molecules combine not tightly in the cavity in the zeolite lattice with screen work, very easily with its ambient water solution in positively charged ion generation exchange interaction, the zeolite crystalline network after the exchange is not destroyed yet.It is investigated card, the NH of clinoptilolite 4 +Cationic exchange capacity is higher, can also select to exchange some heavy metal, thereby can be used for removing heavy metal ion.Zeolite has very big specific surface area (500~1000m 2/ g), thereby can produce bigger diffusive force, so can be used as outstanding sorbent material.There are a lot of uniform holes and passage in zeolite crystal inside, these passages are under the certain physics chemical condition, have accurately and the fixed diameter (about 3~11A), can be adsorbed by it less than the material of this diameter, then be left out greater than the material of this diameter.This phenomenon is called as " molecular sieve " effect.Because zeolite has very big adsorption surface, can hold the adsorbent of quite a lot of quantity, thereby can impel chemistry to be reflected on its surface and carry out, so zeolite is again as effective catalyzer and catalytic carrier.
The present invention mainly utilizes the adsorptive power of zeolite powder to remove ammonia, heavy metal ion in the bottom material of pond for breeding, but and other reaction of catalysis.
5, attapulgite: attapulgite clay is meant with the attapulgite to be a kind of clay mineral of main ingredient.Attapulgite is a kind of crystalloid hydrous magnesium aluminium silicate mineral, has unique layer chain-like structure feature, has the lattice displacement in its structure, contains the Na of non-quantitative in the crystal +, Ca 2+, Fe 3+, Al 3+, crystal is needle-like, fibrous or fiber collection shape.Attapulgite has unique dispersion, high temperature resistant, anti-good colloidal property such as saline and alkaline and higher adsorption bleaching ability.And having certain plasticity-and cohesive force, its ideal chemical molecular formula is: Mg 5Si 8O 20(OH) 2(OH 2) 44H 20Has the intermediate structure between chain-like structure and laminate structure.Attapulgite is earthy, compact mass originates in sedimentogeneous rock and the weathering crust, and color is white in color, canescence, Steel Gray, greyish-green or weak satin luster.The soil property exquisiteness has oily soapy, and light weight, property are crisp, and fracture is conchoidal or irregular shape, and water-absorbent is strong.Have viscosity and plasticity-when wet, dry post shrinkage is little, not quite shows crackle, and the water logging bubble collapses diffusing.Suspension is met not flocculation sediment of dielectric medium.
It is hair-like or fibrous that the attapulgite form is, and is generally woollen blanket shape or earthy aggregate.Mohs' hardness 2~3 is heated to 700~800 ℃, hardness〉5, proportion is 2.05~2.32.
Because the crystalline structure of attapulgite uniqueness makes it to have many special materializations and processing performance.Main physical and chemical performance and processing performance have: positively charged ion interchangeability, water-absorbent, adsorption bleaching, big specific surface area (9.6~36m 2/ g) and colloid index and expansion capacity.
The present invention mainly utilizes the adsorptive power of attapulgite to remove objectionable impurities in the bottom material of pond for breeding, and makes dispersion agent in product, helps product and mixes.
Embodiment two:
Getting SPC-D in the embodiment of the invention is: 20%, and vegetable mould is: 10%, bodied ferric sulfate is: 35%, attapulgite is: 15%, zeolite powder is: 20%.Above-mentioned each raw material is weighed respectively in the ratio of gross weight 1Kg, and SPC-D is packed separately, and other composition mixes the back packing at normal temperatures.Then two packings are packed into and seal after the big packing bag, at last the vanning warehouse-in.
Embodiment three:
Getting SPC-D in the embodiment of the invention is: 15%, and vegetable mould is: 5%, bodied ferric sulfate is: 40%, attapulgite is: 20%, zeolite powder is: 20%.Above-mentioned each raw material is weighed respectively in the ratio of gross weight 1Kg, and SPC-D is packed separately, and other composition mixes the back packing at normal temperatures.Then two packings are packed into and seal after the big packing bag, at last the vanning warehouse-in.
Result of use of the present invention is as follows:
Use at a certain Penaeus vannamei cultivating pool of jiangsu wuxi, 5 mu of areas, summer high temperature is the pond water quality overrich when (7~August), water colour is bad, ammonia nitrogen, nitrite, hydrogen sulfide etc. exceed standard in the water quality, the substrate blackout is smelly, influences the growth of Penaeus vannamei, and " the commentaries on classics pool " phenomenon and the disease of shrimp are serious.A fine morning 10 the name a person for a particular job modifying agent for bottom material of pond for breeding of above-mentioned prescription be used for culturing the pond, consumption is 1Kg/ mu Mi Shuishen.Greatly take a turn for the better with water colour one day after, transparency increases, and the substrate stink disappears, and ammonia nitrogen, nitrite and hydrogen sulfide content are reduced to normal level in the water body, and shrimps are movable to recover normal.
A mandarin fish cultivating pool uses in the somewhere, Nanjing, and area is 2 mu, because of a large amount of the throwing raised forage fiss, cause high temperature season pond water quality overrich, water colour is bad, and water quality ammonia nitrogen, nitrite, hydrogen sulfide etc. exceed standard, the substrate blackout is smelly, influences the growth of mandarin fish, and disease is serious.A fine morning 10 the name a person for a particular job modifying agent for bottom material of pond for breeding of above-mentioned prescription be used for culturing the pond, consumption is 1Kg/ mu Mi Shuishen.The water colour in pond will promptly greatly take a turn for the better with afternoon, and transparency increases, and the substrate stink disappears, and ammonia nitrogen, nitrite and hydrogen sulfide content are reduced to normal level in the water body, and it is normal that fish movement recovers.
A mandarin fish cultivating pool uses in the somewhere, Nanjing, and area is 3 mu, because of a large amount of the throwing raised forage fiss, cause high temperature season pond water quality overrich, water colour is bad, and water quality ammonia nitrogen, nitrite, hydrogen sulfide etc. exceed standard, the substrate blackout is smelly, influences the growth of mandarin fish, and disease is serious.A fine morning 10 the name a person for a particular job modifying agent for bottom material of pond for breeding of above-mentioned prescription be used for culturing the pond, consumption is 1Kg/ mu Mi Shuishen.The water colour in pond will promptly greatly take a turn for the better with afternoon, and transparency increases, and the substrate stink disappears, and ammonia nitrogen, nitrite and hydrogen sulfide content are reduced to normal level in the water body, and it is normal that fish movement recovers.

Claims (1)

1, a kind of modifying agent for bottom material of pond for breeding aquatic products, it is characterized in that: getting SPC-D is: 15~20 weight %, vegetable mould is: 5~10 weight %, and bodied ferric sulfate is: 30~40 weight %, attapulgite is: 10~20 weight %, zeolite powder is: 10~20 weight %, said components is weighed in proportion, and SPC-D is packed separately, and other composition mixes the back packing, two packings are packed into seal the vanning warehouse-in after the packing bag.
CNB2007100225202A 2007-05-09 2007-05-09 Modifying agent for bottom material of pond for breeding aquatic products Expired - Fee Related CN100497522C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007100225202A CN100497522C (en) 2007-05-09 2007-05-09 Modifying agent for bottom material of pond for breeding aquatic products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007100225202A CN100497522C (en) 2007-05-09 2007-05-09 Modifying agent for bottom material of pond for breeding aquatic products

Publications (2)

Publication Number Publication Date
CN101050365A CN101050365A (en) 2007-10-10
CN100497522C true CN100497522C (en) 2009-06-10

Family

ID=38781969

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2007100225202A Expired - Fee Related CN100497522C (en) 2007-05-09 2007-05-09 Modifying agent for bottom material of pond for breeding aquatic products

Country Status (1)

Country Link
CN (1) CN100497522C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575517B (en) * 2009-06-05 2010-10-06 吉林省农业科学院 Soil conditioner of vegetable protecting field
CN102145970B (en) * 2011-03-01 2012-08-29 中国水产科学研究院淡水渔业研究中心 Multifunctional substrate modifier for aquaculture and preparation method thereof
CN102630627A (en) * 2012-04-23 2012-08-15 中国海洋大学 Long-term sterilization type microorganism adhesion preventing oxygen increasing device for aquaculture
CN104591482A (en) * 2014-12-25 2015-05-06 苏州市阳澄湖现代农业发展有限公司 Oxygenation treatment method for aquaculture water body
CN104844352A (en) * 2015-04-30 2015-08-19 濮阳市四季青塑料制品有限公司 Bactericidal oxygen producer for hydroponic plants and application method of bactericidal oxygen producer
CN105198065A (en) * 2015-10-14 2015-12-30 中国水产科学研究院淡水渔业研究中心 Strong oxygenation substrate modifier for aquiculture and preparation method thereof
CN106007275A (en) * 2016-05-15 2016-10-12 杨成胜 Freshwater aquaculture pond sediment conditioner
CN106900613A (en) * 2017-01-16 2017-06-30 陆川县品养殖专业合作社 A kind of passion fruit feeds the cultural method of river snail
CN111362540A (en) * 2020-04-02 2020-07-03 安徽省通源环境节能股份有限公司 Substrate modifier for submerged plant system construction and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
过碳酸钠净水效果的实验观察. 杨小弟,邱世聪,宗清文,吴勇勇,王金权.水处理技术,第26卷第1期. 2000
过碳酸钠净水效果的实验观察. 杨小弟,邱世聪,宗清文,吴勇勇,王金权.水处理技术,第26卷第1期. 2000 *

Also Published As

Publication number Publication date
CN101050365A (en) 2007-10-10

Similar Documents

Publication Publication Date Title
CN100497522C (en) Modifying agent for bottom material of pond for breeding aquatic products
CN101306859A (en) High-efficiency scavenging agent for water quality of aquaculture pond
Jadhav et al. Treatment of textile wastewater using adsorption and adsorbents
CN108101228A (en) A kind of wastewater treatment microbial microbial inoculum
CN101333022B (en) Ecological modifying agent for mineral substance water quality
CN103214074A (en) Aquaculture water purification agent and preparation method thereof
CN101585576A (en) Water environment improver for aquiculture
CN103975948B (en) Cycle water Biocidal algae-killing agent and preparation method thereof
CN105753148B (en) A kind of powdery bio-carrier and its sewage water treatment method of sludge superelevation amount emission reduction
CN101343090B (en) Lanthanide series water treatment agent and method of preparing the same
CN107434303A (en) The processing method of eutrophication aquiculture waste water
CN108585221A (en) A kind of multifunction environment-protection type sewage disposal composite drug and preparation method thereof, application
CN101215033A (en) Method for preparing ecological type composite flocculant by using straw
CN108203165A (en) A kind of complex enzyme biochemical water purification agent and preparation method thereof
CN102219309A (en) SWater purifying agent with quick result
CN107047614A (en) A kind of composite potassium ferrate sustained disinfectant and preparation method thereof and application method
CN102311935B (en) Controlled release microecological preparation for water quality improvement and preparation method thereof
CN101746865A (en) Purifying material, preparation method thereof and method utilizing purifying material to purify water
CN109879353A (en) A kind of aquiculture waste water treatment process
Ren et al. Hydrogel microbial reactor based on microbially induced calcium precipitation for the removal of calcium, cadmium and nitrate from groundwater
CN101734746B (en) Method for adsorbing and removing phycobiliprotein and microcystin-LR by modified attapulgite
CN107487856A (en) A kind of artificial wet land system for handling mariculture sewage
CN111437796B (en) Modified hydrogel material with ammonia nitrogen and total phosphorus removal effects, and preparation method and application thereof
CN101647422A (en) Composition for improving pond substrate and preparation method thereof
CN101734754B (en) Cyanobacterial scavenger with rare earth complex loaded on mineral material and preparing method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090610

Termination date: 20140509