137 results about "Algal agent" patented technology

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.

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.

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 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 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.

The invention discloses environment-friendly type ocean anticorrosive paint applicable to large ships. The environment-friendly type ocean anticorrosive paint is prepared from the following componentsin percentage by weight: 15 to 25 percent of epoxy resin, 5 to 8 percent of ultrafine barium sulfate, 8 to 12 percent of light calcium carbonate, 1 to 3 percent of a thixotropic agent, 5 to 10 percent of a curing agent, 0.1 to 0.2 percent of a film-forming catalyst, 1 to 3 percent of an alga removing agent, 1 to 2 percent of a dispersant, 25 to 35 percent of amine type resin, 0.05 to 0.1 percentof nano silicon dioxide, 5 to 8 percent of toner and the balance of silicon micro-powder. According to the paint disclosed by the invention, a small amount of the film-forming catalyst lanthanum oxideis added; under the catalysis effect, the strength and impermeability performance of a formed film are remarkably improved; the surface strength and anti-chloride ion permeability performance of thepaint are enhanced; the nano silicon dioxide is highly bound to the surface of the film, so that a nano-grade gap of the film is easy to fill and the strength of the film is enhanced.