141 results about "Algal agent" patented technology

Time-release algae-resistant roofing granules have a base particle including an algaecide and an outer coating layer including another algaecide. The at least two algaecides are released over different predetermined periods. The outer layer protects the base particle from exposure to the environment for a predetermined period, then fails catastrophically so that the interior algaecide can be released.

An algaecide formulated in a concentrated, solid composition form for subsequent dissolution in water is disclosed. The algaecide is designed to remove algae from a variety of interior and exterior surfaces. The preferred algaecide compositions chlorinated isocyanurates, such as sodium dichloro-s-triazinetrione, alkali hydroxides selected from the group consisting of sodium hydroxide, potassium hydroxide, calcium hydroxide, and lithium hydroxide; metal sulfates selected from the group consisting of copper sulfate, zinc sulfate, and aluminum sulfate; and a buffer.

A bactericiding algicide effective to strip clay contains isothiazolinone, lauryldimethylbenzyl ammonium chloride and polyacrylic acid.

The invention discloses a comprehensive maintaining method for submerged plants. The comprehensive maintaining method comprises the following steps that firstly, a flocculating agent is added into a water body with the quantity of 1-20 mg / l to reduce the turbidity of the water body; secondly, according to the specific circumstance of dirt attached to the submerged plants, a disinfecting agent or organic acid or pesticide or algicide or surfactant or a substrate modifying agent or a microbial agent or microorganism growth promoting liquid is added into the water body with the amount of 0.1-1 mg / l, and flow disturbance is artificially made; thirdly, a nutrition regulator or a heavy metal complex is applied in the growing stage of the submerged plants with the quantity of 0.2-1 mg / l; fourthly, plagiognathops microlepis or barbels are introduced into the water body with the quantity of 50-100 pieces per 666.7 m<2> to eat fixation algae, and chub or bighead carp are introduced with the quantity of 10-30 g / m<3> to eat planktonic single-spore algae. By means of the comprehensive treatment method, the ecology of the water body is balanced, the transparency of the water body is quickly increased so as to promote the growth of aquatic plants in the water body, dirt attached to the stems and leaves of the aquatic plants is quickly removed, and finally the purpose of long-acting cleaning of the stems and leaves of the aquatic plants and the effect of enhancing water ecological restoration are achieved.

The invention discloses composite algicide consisting of gemini quaternary ammonium cation surfactant and clay solution and an algae removal method. The gemini quaternary ammonium cation surfactant has a structural formula in which R is C9-C20 alkyl, n is an integer from 2-10, and X is Br or Cl. The composite algicide not only has obvious algae removal effect, the dosage of the algicide is small and the algae removal efficiency is high. Meanwhile, the algae removal method is simple in operation, with the algae removal effect improved in aspects of dosage of the algicide and the algae removal time. Therefore, the algae removal method is more convenient and practical than the prior art.

A lithographic fountain solution composition containing complex surfactants is composed of the complex surfactants, buffering electrolytes, water-soluble high-molecular compounds, aqueous germicide and algicide, aqueous antifoaming agents and water. The complex surfactants include two or more nonionic surfactants, anionic surfactants, cationic surfactants or ampholytic surfactants. The lithographic fountain solution composition containing the complex surfactants has the advantages of excellent dynamic ink-water balance performance, low requirements on quality of water for working solution preparation, high adaptability to changes of temperature conditions and the like; using the lithographic fountain solution composition can evidently improve quality of prints, improve printing efficiency and reduce production cost; in addition, the lithographic fountain solution composition contains no poisonous and harmful substances and is high in stability and long in storage time.

A method for preparing a linoleic acid sustained-release algal inhibiting agent comprises the following steps that firstly, linoleic acid is dissolved through ethyl oleate, emulgator is added into the linoleic acid, and the emulsified linoleic acid is added into a solution of sodium alginate tech grade; secondly, the solution obtained in the first step is dropwise added into a glacial acetic acid solution containing chitosan and calcium chloride to form microspheres; thirdly, after the microspheres are cooled to the indoor temperature, a cross-linking agent is added into the cooled microspheres; fourthly, the process of suction filtration is carried out, and the microspheres to which the cross-linking agent is added are washed by petroleum ether and distilled water; fifthly, the linoleic acid sustained-release algal inhibiting agent is obtained after drying. Algal inhibition effective time is prolonged, the algal inhibition effect is improved, and cost is reduced. All adopted preparing materials are natural polymer materials which are non-toxic, good in biocompatibility and biodegradable, and the problems of secondary pollution caused by chemical algal removing and bio-concentration and biological amplification caused by chemical medicines can be effectively avoided.

The invention discloses a water body algaecide and a method for the production thereof. The water body algaecide comprises the following components by weight: copper agent in an amount of 2 to 15 parts, zinc agent of 0 to 10 parts, aluminum agent of 40 to 60 parts, carriers of 20 to 30 parts, calcium carbonate of 5 to 15 parts and coating agent of 0.5 to 10 parts. The water body algaecide of the invention has a plurality of persistent efficacies of alga removing, flocculation, sedimentation and phosphorus consolidation, and can remove the algae effectively and prevent water bloom.

The invention discloses a water quality improving method by algae control of a compound ecological environment-protection algae control agent, which comprises the following steps: A. area selection: girding an experimental zone; B. algicide preparation: diluting hydrogen peroxide with tap water and arranging the hydrogen peroxide in the shade; C. flocculant preparation: preparing industrial-grade polyferric sulfate into a solution and diluting with water; D. lake sediment preparation: taking pythmic sediments, drying and crushing the sediments, preparing a turbid liquid, and stirring silt sunk into the bottom to the upper layer; E, the dosage and spraying condition of the algicide: uniformly spraying the diluted H2O2 in proportion in an enclosure with surface water bloom and spraying; F. sediment turbid liquid spraying: spraying the turbid liquid in proportion on the water surface in an atomization mode; and G. flocculation sedimentation implementation: sprinkling the polyferric sulfate solution into the water, stirring, standing still and settling. The method is simple and convenient to operate, has low cost, increases transparency, has obvious substrate improvement effect, has zero pollution on the water remediation, and has high environmental, social and economic benefits.

The present invention discloses a water treatment agent and its matched application method. It is made into the form of paste or slurry, and can be slowly and uniformly dissolved in the water completely, in addition to the water (including crystal water) said water treatment agent also contains corrosion inhibitor, antiscale, dispersing agent, sterilizing algaecide, thickening agent and pH regulating agent. The essential component of said water treatment agent is water, includes crystal water, and its cotent is 37%-50%, also contains water soluble zinc salt and hydroxyethylidene diphosphonate and its water-soluble salt. Said invention also provides its application method and steps.

The invention discloses a preparation method of a compound microbial algaecide. The method comprises the following steps: reasonably combining separated and purified extracellular polymeric substances, kaolin and the like so as to prepare a compound microbial flocculant; then fossilizing separated alga dissolving bacteria and algal toxin degrading bacteria; finally, reasonably compounding the compound microbial flocculant with the fossilized alga dissolving bacteria and algal toxin degrading bacteria so as to prepare the compound microbial algaecide. The compound microbial algaecide is good in alga killing effect and algal toxin degrading effect; source materials adopted during the preparation of the compound microbial algaecide are low in cost, so that the compound microbial algaecide is low in preparation cost and harmless to natural ecosystems. The prepared compound microbial algaecide is organically integrated with functions of flocculation-type alga removing, microbial alga dissolving and micro-biological degradation of algal toxin, so that the safe and efficient treatment of water blooms is realized.

The invention discloses an attapulgites sterilizing algicide for a swimming pool, which comprises high-viscosity attapulgite clay, activated attapulgite clay, copper sulfate, aluminium polychlorid, lauryl dimethyl benzyl ammonium chloride and chlorine dioxide. The ingredients of the attapulgites sterilizing algicide are added into a stirrer for stirring and then packaged into the finished product of the attapulgites sterilizing algicide after being uniformly stirred and mixed. The attapulgites sterilizing algicide can kill virus, bacteria, protista, alga, fungus, various spores and thallus formed by the spores in water in the swimming pool. The attapulgites sterilizing algicide not only can kill the alga in the water, but also can kill the alga at the bottom of the pool and in the brickwork joints, and remove ammonia nitrogen and peculiar smell in the water to enable the water in the swimming pool to be clear and clean and reach the national standard. The attapulgites sterilizing algicide is suitable for sterilizing and killing the alga in the circulating water of the swimming pool and absorbing the peculiar smell.

The invention discloses a preparation method and application of a slow release algicide. The method comprises: A, dissolving sodium alginate powder in deionized water to prepare a sodium alginate colloidal solution and adjusting pH of the solution; B, preparing a certain concentration of a phenolic acid allelopathic substance solution as a core substance; C, preparing a dilute acetic acid mixed solution of chitosan and calcium chloride powder to obtained a fixing solution; D, mixing the phenolic acid allelopathic substance solution and the sodium alginate solution according to a volume ratio of a core-wall solution; E, sucking the mixed solution of phenolic acid allelopathic substance solution and the sodium alginate solution taken as an embedding material to an injection syringe, and adding the mixed solution to the fixing solution for fixing drop by drop; F, filtering the obtained slow release algicide out of the fixing solution, and performing washing and bagging; and G, performing refrigeration and carrying out freeze drying through a freeze drier to obtain the slow release algicide. The algicide is applied to dominate algae species of water bloom, prevents use of toxic and harmful substances, is stable in embedding results, and has the highest inhibition rate being 60-75%.

The invention discloses a method for removing floating cladophora. The method comprises the following steps: (1) area selection is carried out, wherein an area with vigorously growing and mass floating cladophora is selected; (2) an algicide I is prepared, wherein hydrogen peroxide is diluted with distilled water; (3) an algicide II is prepared, wherein a ferrous sulfate solution is prepared with distilled water; (4) a sedimentation agent is prepared, wherein clay and bentonite are prepared into the sedimentation agent; (5) the doses and spraying conditions for the algicides I and II are that the prepared algicides I and II are sprayed on the surface of cladophora in the selected area; (6) the sedimentation agent is added, wherein after cladophora is treated with the algicides I and II, the sedimentation agent is uniformly spread in water according to the area of the experiment area; cladophora sinks to the water bed; after standing, the water is clarified, and no cladophora floats on the surface. The method is simple; operation is convenient; cost is low; and no secondary pollution is caused. The method has a significant removal effect against cladophora, and has an amelioration effect upon high-organic substrate.

The invention discloses a preparation method of a composite inorganic polymer stable algaecide and an algae removing method. The algaecide can effectively flocculate algae to form flocs; the algae can be removed from a water body quickly by the action of an external magnetic field; as magnetic powder and the flocs are closely combined, the flocs do not fall easily in a removing process; and the removing efficiency of the algae is improved. As the algaecide contains an efficient adsorbent, contaminants such as algal toxin, nitrogen and phosphorus in the water body can be adsorbed and enriched, and are removed together with the flocs. The composite algaecide has the advantages that the algaecide is stable, high in removing efficiency, and environment-friendly, and has potential application value and market competiveness.

The invention relates to a preparation process of a circulating water sterilizing and algae-removing agent. The preparation process comprises the steps of synthesis, crystallization, product filtration, product washing, secondary filtration of the product, product refining and drying. The preparation process adopts an ammonium thiocyanate synthesis method, so the utilization ratio of resources is increased, environmental pollution is reduced and the production cost is reduced; ammonium thiocyanate which is produced by vast enterprises is selected as a raw material, so the raw material is stable in price and low in cost; according to the synthesis characteristic of water-based ammonium thiocyanate and oily dichloromethane, the water-based ammonium thiocyanate and the oily dichloromethane are dissolved mutually and completely under high-rotating-speed propelling agitation, the reaction is complete and the yield of the products reaches 80 percent.

For use in a pool or spa, the combination comprising, filter structure in the path of pool or spa water flow, substance in direct contact with a surface or surfaces of said filter structure, to contact said flow, said substance characterized as being one of the following: i) bacteria inhibiting ii) an algaecide iii) an algaestat iv) a sanitizer. v) a bacteriostat

The invention discloses an algaecide, and a preparation method and application thereof. The algaecide comprises HCl, starch, expanded vermiculite and water, and based on 100 parts by weight of expanded vermiculite, the content of HCl is 7-13 parts by weight, the content of expanded vermiculite is 7-13 parts by weight, and the particle size of expanded vermiculite is less than 100 mu m. The preparation method of the algaecide comprises: mixing HCl, starch, expanded vermiculite and water, wherein based on 100 parts by weight of expanded vermiculite, the content of HCl is 7-13 parts by weight, the content of expanded vermiculite is 7-13 parts by weight, and the particle size of expanded vermiculite is less than 100 mu m. The algaecide provided by the invention has a removal rate on harmful algae of up to 99.89%.

The invention discloses a bactericidal algicide as well as a preparation method and an application thereof. The bactericidal algicide is prepared from the following raw materials in parts by weight: 10 to 15 parts of 2-hydroxyl-2, 3, 5-trichlorobenzophenone, 5 to 10 parts of 5-chloro-2-methyl-4-isothiazoline-3-ketone, 6 to 12 parts of sodium dichloroisocyanurate, 6.2 to 10.6 parts of modified zincsulfide, 10 to 15 parts of modified attapulgite, 2.6 to 4.6 parts of an adhesive, 4.8 to 8.6 parts of a penetrating agent and 10 to 20 parts of deionized water. The penetrating agent comprises the following components: a gemini quaternary ammonium salt cationic surfactant, polyethylene glycol, animal glue, sodium diethylhexyl sulfosuccinate and squalane. The bactericidal algicide provided by theinvention has the advantages of long efficacy time, good bactericidal and algicidal effects, adsorption of heavy metal ions and prevention of corrosion of a heat exchanger.

The invention discloses a chemical cleaning and pre-filming method of a circulating water system. The method comprises the steps as follows: (1) sterilization and slime stripping: pollution dischargeand water replenishing are shut down under the condition that the water quantity of the system is guaranteed, a non-oxide sterilization and alga removal agent and a slime stripping agent are added inan impact manner, the turbidity falls step by step after rising to the peak, and water is replaced optionally; (2) acid pickling, rust removal and scale removal treatment: pollution discharge and water replenishing are shut down under the condition that the water quantity of the system is guaranteed, acid and a corrosion and scale inhibition agent are added to control the pH to range from 5.5 to 6.5, when the concentration of iron ions tends to balance basically, acid pickling can be completed, and then water is replaced; (3) pre-filming treatment: pre-filming treatment is started after the turbidity of circulating water is lower than 10 NTU and rho (Fe<3+>) is lower than 1.0 mg / L. With the chemical cleaning and pre-filming method, eutrophication of surrounding water can be avoided when discharging after pre-filming is ended.

The invention discloses an antifouling paint for coating the bottom of a steel ship and preventing cracking, which is prepared from the following components in parts by weight: 10-25 parts of chloro-ether resin, 15-25 parts of epoxy-ester resin, 10-20 parts of rosin, 5-10 parts of pigment, 20-50 parts of antifouling agent, 1-3 parts of auxiliaries and 5-20 parts of mixed solvent, wherein the chloro-ether resin contains chloroethylene and isobutyl vinyl ether; the epoxy-ester resin contains fatty acid and bisphenol A epoxy resin; the antifouling agent contains cuprous oxide and thiram algicide; the auxiliaries include a wetting dispersant and an antifoaming agent; the mixed solvent contains xylene and 200# coke solvent. Without internally-forbidden toxic materials, the antifouling paint meets the state environmental protection requirements, and the antifouling period reaches 1-3 years; the antifouling paint has the characteristics of good anti-cracking property, rare falling and the like, can overcome the shortcomings that the existing antifouling paint easily gets crispy, is not environment-friendly and the like, and is mainly applied to the antifouling treatment of the bottom of a steel ship.

The invention discloses a preparation method and an application of a layered double metal hydroxide bloom alga remover. According to the bloom alga remover, a bivalent and trivalent metal combination reacts with alkali to prepare layered double metal hydroxide, and negatively charged algal cells in water are electrostatically adsorbed and flocculated by utilizing a characteristic that laminates of the layered double metal hydroxide are positively charged, so that algae in the water are removed; the prepared layered double metal hydroxide is high in charge density of the laminates, 0.758 nm in interlayer spacing and 20-50 microns in powder size, and the bloom alga remover is good in alga removal performance; the removal rate of the layered double metal hydroxide to algal chlorophyll a is more than 94.62%; the preparation method adopted by the invention is simple, the obtained powder material is good in crystal form and morphology, the alga removal process is simple, formed algal flocs are good in settling performance and can be separated from the water quickly, and the alga remover is low in consumption and low in cost.

The invention discloses Exiguobacterium sp. with alga-lysing activity and application thereof in cyanobacterial bloom control and belongs to the technical field of microbe application. The Exiguobacterium sp. A27 with higher alga-lysing activity is separated from water of Taihu Lake, and has the collection number of GCMCC (China General Microbiological Culture Collection Center) No.4114. The Exiguobacterium sp. A27 is used for development and production of novel algicides, and is finally applied to controlling cyanobacterial bloom in lakes.

The invention relates to a preparation method of a composite magnetic algae removing agent, and belongs to the technical field of preparation of an algae removal agent. The method is as follows: firstly using citric acid for modifying nano Fe3O4, then using glycidyl trimethyl ammonium chloride to react with chitosan to prepare cationic chitosan, using polystyrene emulsion as a template, successively coating the template with the cationic chitosan and the citric acid modified Fe3O4 nanoparticles by electrostatic interaction, and finally removing a polystyrene inner core by dialysis in N,N-dimethyl formamide to obtain the composite magnetic algae removing agent with a hollow structure. The composite magnetic algae removing agent prepared by the method can effectively remove algae flocculation in water, the algae removal rate reaches more than 99.85%; the composite magnetic algae removing agent may not cause water pollution, after use, the water is clear and colorless, and green and environmentally-friendly requirements can be met.

The invention discloses a method for effectively controlling algae bloom in eutrophic lakes and a floating floor of a magnetic precipitating machine; polymeric aluminum ferric chloride, ferric sulfate and ultrapure magnetite powder are uniformly blended according to a certain weight proportion and are prepared into magnetic algaecide by compounding and then the magnetic algaecide, together with water, is prepared into suspension; the suspension is blended with flowing algae-containing lake water and then algae is collected, precipitated and removed. The structure of the floating floor of the magnetic precipitating machine is as follows: the side surface of a boat hull is connected with a fluidizing tank, the front end of the fluidizing tank is opened, flow baffles are arranged at the middle of the fluidizing tank in a staggered way, the area in front of the flow baffles is provided with a mixing tank, while the area behind the flow baffles is provided with a sewage collecting tank. The invention not only can effectively flocculate algae cells and granular nitrogen-phosphorus suspended matters in water, but also can transform water-soluble phosphate radicals into slightly soluble phosphate to be flocculated. The adoption of the floating floor of the magnetic precipitating machine can greatly shorten the precipitating time of floccus, can reduce the length of a subsider and improve treatment efficiency, thus being suitable for the treatment of the eutrophic water body with large area.

The invention discloses a circulating cooling water treatment agent which is prepared from the following substances in parts by mass: 15-30 parts of a corrosion and scale inhibitor, 1-2 parts of a dispersing agent, 15-20 parts of a sterilizing algicide, 5-10 parts of a stripping agent and 50-100 parts of water. The sterilizing algicide is composed of sodium hypochlorite and isothiazolinone, and the volume ratio of sodium hypochlorite to isothiazolinone is (0.5-1):100. The circulating water treatment agent provided by the invention can significantly adjust the pH value and reduce the corrosionrate of metals, has excellent corrosion inhibition rate and scale inhibition rate, and has the advantages that the oxidative bactericidal algicide and the non-oxidative bactericidal algicide are compounded for use, so that bacteria and algae in a circulating water system are effectively controlled, and meanwhile, the bacteria cannot generate relatively strong drug resistance.

The invention relates to a sterilizing algicide for circulating cooling water and a preparation method of the sterilizing algicide. The sterilizing algicide comprises the following components in parts by mass: 10-19 parts of chlorophenasic acid, 10-19 parts of parachlorophenol, 3-10 parts of dodecyl dimethyl benzyl ammonium chloride, 0.5-3 parts of dithiocyano-methane, 8-15 parts of sodium dodecyl benzene sulfonate, 1-5 parts of acetone oxime, 2-5 parts of methyl alcohol, 1-3 parts of diethyl ether, 4-8 parts of sodium hydroxide, and 19-37 parts of water. The sterilizing algicide has good sterilizing and algae removal effects, and has a long pesticide effect, the sterilizing rate reaches over 98%, and the pesticide effect time is more than 25 hours.

The invention discloses a highly efficient composite bactericidal algaecide and a preparation method thereof, which can solve the problem that the existing biocide has poor application result. The invention adopts the following technical proposal: the bactericidal algaecide consists of the following components by weight: 20-50 percent of quaternary ammonium salt, 20-50 percent of thiazolinone, 10-30 percent of simazine and 5-20 percent of organic solvent. The highly efficient composite bactericidal algaecide can be prepared to a bactericidal algaecide with different foamability according to customer needs and has obvious sterilization and algae removal effects on the hazards of bacteria, fungi, algae and legionnella in an opened recirculation cooling water system.

The invention discloses a method for improving the vacuum degree of a condenser through using circulating water dosing treatment. The method is characterized in that a scale and corrosion inhibitor, sulfuric acid and a sterilization and alga elimination remover are added to circulating water, wherein the scale and corrosion inhibitor comprises, by weight, 1-3 parts of organic phosphonic acid, 15-20 parts of hydrolyzed polymaleic anhydride, 3-6 parts of sodium polyacrylate and 15-30 parts of benzotriazole; the sterilization and alga elimination remover comprises, by weight, 2-6 parts of isothiazolinone, 10-20 parts of dodecylbenzylammonium chloride and 3-6 parts of dichloroethyl ether; and 1-10 parts by weight of the scale and corrosion inhibitor, 2-5 parts by weight of the sterilization and alga elimination remover and 0.01-0.1 part by weight of concentrated sulfuric acid are added to every 1000 parts by weight of the circulating water. The concentrated sulfuric acid is a sulfuric acid solution with the mass fraction being greater than or equal to 70%. The circulating water is dosed in order to improve the cleanliness of a copper tube, improve the heat transfer of the condenser and reduce the terminal temperature difference of the condenser.

The invention discloses a novel efficient germicide and algicide and a preparation process thereof. The novel efficient germicide and algicide comprises the following raw materials in percentage by weight: 25-35% of dichloroether, 20-35% of tetramethylethylene diamine, 0.5-5% of dodecyl dimethyl tertiary amine, 0.1-2% of phase transfer agents, 0.1-0.5% of initiator and the balance of deionized water. The novel efficient germicide and algicide belongs to a non-oxidizing germicide and algicide, the germicide and algicide effect is good, and the novel efficient germicide and algicide has good dispersion, seepage and slime removal effects; foam is not produced when the novel efficient germicide and algicide is used, the effect of the novel efficient germicide and algicide lasts for a long period of time, the consumption of the novel efficient germicide and algicide is low, 6-10 ppm (parts per million) of the novel efficient germicide and algicide can have a good use effect in water, and the novel efficient germicide and algicide does not corrode equipment or pipelines and is safe and reliable to use, transport and store and environmentally friendly.