60results about How to "Does not cause eutrophication" patented technology

The invention discloses a dephosphorization flocculating agent and a preparation method thereof. The dephosphorization flocculating agent is formed by compounding an inorganic flocculating agent and an organic flocculating agent. The raw materials of the inorganic flocculating agent comprise sodium ferrate, borax, ferrous sulfate, silicate or aluminate; the raw materials of the organic flocculating agent comprise modified chitosan or modified polyacrylamide. The preparation process comprises the following steps: firstly adding a non-oxidizing acid into the silicate or aluminate to obtain a polysilicate colloid or an aluminum hydroxide colloid, then adding a borax solution and a sodium ferrate solution sequentially while stirring, further dropping a ferrous sulfate solution, mixing to form the inorganic flocculating agent, standing, then adding the modified polyacrylamide or modified chitosan into the inorganic flocculating agent, curing and adding the acid till the pH value is less than 7 to obtain the finished dephosphorization flocculating agent. The flocculating agent is suitable for a wide range of water quality, is little affected by co-existing salts, the pH value of sewage and temperature and is particularly effective for dye wastewater, oilfield sewage and the like.

The invention discloses a non-phosphorus corrosion and scale inhibitor. The non-phosphorus corrosion and scale inhibitor is prepared from the following components in percentage by weight: 8 to 12 percent of hydrolytic polymaleic anhydride, 10 to 15 percent of polyepoxysuccinic acid, 15 to 20 percent of acrylic acid-2-acrylamido-2-methylpropanesulfonic acid multipolymer, 10 to 15 percent of carboxylic acid-sulfonic acid-acrylate terpolymer, 8 to 12 percent of acrylic acid-hydroxypropyl acrylate copolymer, 4 to 8 percent of zinc sulphate heptahydrate and the balance of deionized water. The invention further discloses a preparation method of the corrosion and scale inhibitor. The preparation method comprises the following steps: weighing the components according to the formula; adding the components into a stirrer in sequence; stirring at normal temperature and under normal pressure to obtain the corrosion and scale inhibitor. The corrosion and scale inhibitor disclosed by the invention has the advantages of freeness from phosphorus, adoption of safe and environment-friendly components, simple production process, high scale-inhibiting efficiency, high corrosion-inhibiting performance, prevention of eutrophication of a water body caused by discharge of phosphorus, and very high compatibility; the adhesion of microorganisms to equipment can be reduced effectively, and the corrosionand and scale inhibiting performance can be enhanced greatly.

The invention relates to a phosphate-free polyether scale inhibitor (APEX) which is a product of free radical polymerization of a polyether reaction monomer prepared by a lactone process and a monomer which contains a vinyl unsaturated double bond. The scale inhibitor comprises a structural general formula shown in the specification, wherein A is a constitutional repeating unit after the copolymerization of the monomer which contains the vinyl unsaturated double bond; R1 is H or a C1-C5 low-carbon alkyl; a value of P is 2 to 10; M is H<+>, K<+> or Na<+>; the polymerization degree x is 1 to 5,000; the polymerization degree y is 1 to 5,000; and the polymerization degree n is 1 to 100.

The invention discloses a corrosion and scale inhibitor for treating circulating cooling water. The corrosion and scale inhibitor is composed of the following raw materials in percentage by mass: 3-15% of polyaspartic acid, 0-8% of organic phosphine, 2-10% of phosphine carboxylic acid, 5-10% of carboxyl group-containing polymer, 1-3% of copper corrosion inhibitor, 0-16% of zinc salt and the balance of water. The corrosion and scale inhibitor disclosed by the invention is low in phosphorus content and biodegradable, and no water body eutrophication is caused by pollution discharge; the corrosion and scale inhibitor has excellent corrosion and scale inhibition properties and can effectively improve the heat exchange effect of a central air conditioning refrigerating unit when being applied in a central air conditioning circulating cooling water system, the average temperature difference of a condenser is not larger than 1.0 DEG C and the average temperature difference of an evaporator is not larger than 2.4 DEG C, and thus safe, stable and economical operation of the unit is ensured.

The invention relates to a method for using composite microbe and nanometer composite carrier to treat the gas with bad smell, and relative device. The box of biological filter is divided by several upright baffle plates, which contains microbe nourishment storage pool, a liquid level controller, a porous baffle plate, a nourishment spray tube, and a nourishment circulate pump, while the bad smell flows in the box to contact with the nanometer composite mineral carrier stacked on the porous baffle plate, to degrade the object via the microbe group on/in the nanometer composite mineral carrier into the material without toxicity and harm, as water, carbon dioxide, nitrogen gas and sulfur. And the invention uses the bad smell object as the carbon source, energy source, nitrogen source and sulfur source of microbe to realize circulation, save cost and reduce nourishment consumption. The invention has simple structure and low cost, while the LQ-SSB composite microbe group and nanometer composite mineral carrier have high stability and efficiency.

The invention relates to a special liquid fertilizer for potato-seeding supplemental irrigation. The special liquid fertilizer is a liquid fertilizer prepared by matching an inorganic nitrogen fertilizer, an inorganic phosphorus fertilizer, an inorganic potassium fertilizer, a medium and micro fertilizer and water, wherein the content of total nutrients (N+P2O5+K2O+medium and microelements) is greater than or equal to 29.84 percent, wherein the total nutrients comprise 9.38-20.49 percent of nitrogen, 4.34-12.62 percent of phosphorus pentoxide, 4.7-15.28 percent of potassium oxide, 0.53-0.68 percent of calcium, 0.35-0.48 percent of magnesium, 0-4.05 percent of sulfur, 0.06-0.1 percent of iron, 0.08-0.1 percent of manganese, 0.08-0.13 percent of copper, 0.17-0.19 percent of zinc, 0.04-0.06 percent of boron and 0.002-0.003 percent of molybdenum. In the invention, by combining production-area soil-nutrient supplying levels, the nitrogen fertilizer and the phosphorus fertilizer are additionally applied in a pointed way, the potassium fertilizer is properly supplemented, the deficiency of the medium and micro fertilizer is prevented, the special liquid fertilizer has the characteristics of balanced and comprehensive nutrients, strong specificity, high nutrient concentration, totally-ionic state, environmental protection, no pollution, low cost, simple manufacturing process and the like, the yield of potatoes can be improved, the quality is improved, the agricultural input is reduced, and an ecological environment is improved.

The invention discloses an environment-friendly waterborne industrial cleaning agent with a low COD (Chemical Oxygen Demand) value. The environment-friendly waterborne industrial cleaning agent with the low COD value is prepared from the following components in percentage by weight: 1 to 10 percent of a nonionic surfactant, 1 to 3 percent of waterborne organic alcohol amine, 5 to 20 percent of ancleaning aid, 1 to 10 percent of borate, 1 to 10 percent of a corrosion inhibitor, 0.1 to 0.5 percent of a defoaming agent, 1 to 5 percent of a solubilizer and the balance of deionized water, whereinthe sum of use amounts of all the components is 100 percent. Compared with the prior art, the environment-friendly waterborne industrial cleaning agent is an environment-friendly cleaning agent due tothe fact that phosphorus is not contained, so that water eutrophication is avoided when the environment-friendly waterborne industrial cleaning agent is used; in addition, the COD value is relatively-low, so that an excellent cleaning effect is achieved, as well as the burden of industrial sewage treatment is greatly reduced and the pollution to the environment is reduced while the same cleaningeffect is achieved.

The invention relates to an efficient composite scale inhibitor which belongs to the technical field of industrial water treatment agent design and is characterized by compounding, by mass, 25-75% of a terpolymer barium strontium scale inhibitor and 25-75% of a binary copolymer calcium scale inhibitor, the binary copolymer calcium scale inhibitor is a copolymer of epoxy succinic acid and sodium allysulfonate, and the terpolymer barium strontium scale inhibitor is a copolymer prepared by adding acrylic acid or methacrylic acid and acrylate in maleic anhydride. The efficient composite scale inhibitor is free of phosphorus in formulation, may not cause the water body eutrophication in use, is friendly to the environment, is suitable for calcium, barium, strontium and other ion containing water body, the preparation method is simple, the cost is low, anti salt performance is good, stability is good, applicability is wide, and the scale inhibition effect is better by same dose amount compared with that of the single terpolymer barium strontium scale inhibitor or the binary copolymer calcium scale inhibitor.

The invention relates to a non-phosphorus composite scale and corrosion inhibitor and a preparation method thereof. The inhibitor is prepared from, by mass, 10-20 parts of polycarboxylate, 15-30 partsof amino acid polymers, 10-15 parts of zinc salt, 10-15 parts of sodium salt, 1-2 parts of copper corrosion inhibitor, 10-20 parts of sulfonic acid polymers and the balance water. The preparation method of the inhibitor comprises the steps that the water and the zinc salt are added into a reaction kettle by weight and heated to 40-55 DEG C, and the sodium salt is added to the reaction kettle andstirred till the sodium salt is completely dissolved; polycarboxylate, amino acid polymers, the copper corrosion inhibitor and sulfonic acid polymers are added to the reaction kettle in sequence and mixed; sampling is conducted, materials are taken out after detection is qualified, and labeling and warehousing are conducted. The non-phosphorus composite scale and corrosion inhibitor is applied tocirculation cooling water, has the efficient scale inhibition effect and causes no pollution to the environment, adsorption film and sedimentation film which can be formed on the metal surface have the corrosion inhibition effect, formation of all kinds of scale is prevented, and it is guaranteed that a system runs normally.

A scale and corrosion inhibitor for a power cycling water system belongs to the technical field of water treatment of a power system. The invention aims to provide a preparation method for a composite scale inhibitor which is simple in process flow, low in production cost, stable in quality and efficient in scale prevention and corrosion deceleration, and is a phosphorus-free formula product. The scale and corrosion inhibitor comprises the ingredients in percentage by weight: 15-30% of hydrolytic polymaleic anhydride, 10-20% of polyepoxysuccinic acid, 10-15% of a sulfonic acid copolymer, 5-8% of zinc salt, 2-5% of sodium salicylate and the balance of water. The compound raw materials adopted are non-toxic, low in price and efficient, and the production process of the scale and corrosion inhibitor is simple in flow, the product quality is stable, and the corrosion and scale inhibition rate is greater than 95%. Meanwhile, the production process of the scale and corrosion inhibitor is an environmental-friendly clean process which is free of industrial three waste discharge, simple to operate, low in production cost and suitable for industrialized scale production.

A method for production of a bacillus subtilis preparation by utilizing ethanol industrial yellow water includes collection and treatment of the ethanol industrial yellow water, cultivation of bacillus subtilis in the ethanol industrial yellow water, and receiving and preparation of the bacillus subtilis. The method for production of the bacillus subtilis by utilizing the ethanol industrial yellow water not only can make full use of the ethanol industrial yellow water, reduce the treatment cost of the yellow water, optimize comprehensive utilization of the yellow water and improve the ecological environment, but also can expand sources of a nutrition substrate in a conventional bacillus subtilis preparation production, lower the production costs and expand the application scope of bacillus subtilis.

The invention discloses a preparation method of a scale and corrosion inhibitor for the chemical industry field and belongs to the technical field of chemical industry. The preparation method of the scale and corrosion inhibitor for the chemical industry field is technically characterized in that polymaleic anhydride with an average molecular weight higher than 5500 is used as a main raw material; water is used as a solvent; carboxyl (-COOH) in the raw material is hydrolyzed to be -CO- and -OH; zinc sulfate is added; and metal zinc ions and the polymaleic anhydride with high molecular weight form a stable complexation material through a complexation reaction. The preparation method of the scale and corrosion inhibitor for the chemical industry field is simple in technological process of production, stable in product quality and high in scale and corrosion inhibition rate. Meanwhile, the production process is an environment-friendly cleaning process. The preparation method of the scale and corrosion inhibitor for the chemical industry field is free from discharging of three industrial wastes, simple and convenient to operate, low in production cost and suitable for industrialization scale production.

The invention relates to phosphate-free corrosion inhibition antisludging agent and a preparation method thereof. Phosphate-free corrosion inhibition antisludging agent is synthesized mainly by A and B; molar ratio of A and B is 2:1, wherein A is low molecular organic carboxylic acid or salt containing carboxylic group, sulfonic group or carbon-carbon double bond and B is one or more of quadrol, diethylenetriamine, and triethylene tetramine. The preparation method thereof is as follows: firstly, A is dissolved in ethanol, benzene, methylbenzene or dimethylbenzene, and switched to a three-neck flask; B is condensed with sodium dodecyl benzene sulfonate or sodium acetate; the condensed product is poured into the three-neck flask; the reaction temperature is controlled; the product is stirred for 1-3h in the temperature of 100 to 170 DEG C, and then the product reacts for 2-4h in the temperature of 160 to 200 DEG C, and finally is decompressed and distilled in the temperature of 80 to 160 DEG C to obtain claybank stringy liquid which is the product. The product is used for rotating hanging sample test of Q235 carbon steel; when dosage is 5mg-L, annual corrosion rate can be reduced to 0.080mm-a and corrosion inhabitation rate reaches 76.6%. When the product is combined with Zn saline solution, the corrosion inhabitation rate can reach 83% and the antisludging rate can reach 95%.

The invention belongs to the technical field of sewage treatment, in particular to the technical field of a preparation method of a hydroxyapatite nanocomposite material. The removal mechanism of Cd2+, Cu2+, and Zn2+ in hydroxyapatite nanocomposites is firstly the rapid complexation of heavy metal ions on the surface of hydroxyapatite, and then the heavy metal ions diffuse into the particles and exchange with Ca2+ to form a complex containing heavy metal ions. Ionic hydroxyapatite. For Pb2+, in addition to the adsorption of fixed cations, the dissolution of hydroxyapatite and the precipitation of Pb10(PO4)6(OH)2 contributed most of the removal of Pb2+, and heavy metal ions such as Cd2+, Cu2+, Zn2+ were absorbed by hydroxyapatite It is adsorbed by stone nanocomposite material. The performance of this material is stable. The nano-scale hydroxyapatite powder wrapped by zeolite releases slowly, which can maintain long-term effectiveness, and the release of phosphorus is not large, which will not cause eutrophication of water body.

The invention provides an aviation engine carbon deposit cleaning agent and a preparation method thereof. The aviation engine carbon deposit cleaning agent comprises the following components in parts by weight: 10-25 parts of alcohol ether solvent, 5-10 parts of closed dodecylbenzene sulfonic acid, 2-8 parts of a sophorolipid biosurfactant, 2-5 parts of alkenyl succinic anhydride, 2-5 parts of a complexing agent, 2-5 parts of a ternary polycarboxylic acid composition, 1-3 parts of a compound corrosion inhibitor, 1-10 parts of an alkalinity improver, 0.1-1.0 part of a defoaming agent and 50-70 parts of water. The aviation engine carbon deposit cleaning agent is suitable for various assemblies made of different materials in an engine, can protect all the assemblies of the engine from being corroded, oxidized and discolored, meanwhile, removes carbon deposit and dirt on all the assemblies of the engine thoroughly, and guarantees a good cleaning effect.

The invention discloses a submerged plant seed throwing cup capable of increasing the survival rate. The cup comprises a cup body, planting filler and a submerged plant, wherein the cup body is composed of a deformable cup opening, a cup structure and a hollow cup bottom, the submerged plant is placed in the cup body from the deformable cup opening, the root of the submerged plant is wrapped witha planting soil ball, the planting soil ball is wrapped with a cotton thread in a winding mode, a plant fiber net is laid above the hollowed cup bottom, the planting filler is laid above the plant fiber net, the planting filler comprises stone, ceramsite and planting matrix soil which are sequentially laid from bottom to top, the particle size of the stone, the particle size of the ceramsite and the particle size of the planting matrix soil are sequentially reduced, and gaps between the stone and the ceramsite are also filled with the planting matrix soil. The cup is simple in structure, convenient to use and low in cost, the problem that roots of submerged plants are difficult to attach under hard and aerobiotic substrate conditions can be effectively solved, the planting survival rate ofthe submerged plants is greatly increased, all used materials are natural degradable environment-friendly substances, and the ecological environment of target water bodies such as lakes, reservoirs and the like can be protected.

The invention relates to a preparation method for a degradable slow-release scale inhibitor, and belongs to the technical field of scale inhibitor preparation. The preparation method comprises the steps that maleic acid is added into deionized water, after heating in a water bath and cooling are performed, an aqueous ammonia solution is added, heating is performed to increase the temperature, and stirring, drying and cyclodehydration are performed to obtain a yellow solid; the yellow solid is added into distilled water, heating is performed to increase the temperature, and titration and hydrolysis are performed with a sodium hydroxide solution; after the color of the solution is changed into reddish brown, heating is stopped, and natural cooling and standing are performed; filtering is performed, collected filtrate is added into absolute methanol, and precipitation is performed; filtering is performed, filtrate is collected, evaporated and dried, and a granular scale inhibitor is prepared; the granular scale inhibitor is mixed with substances such as a gelatin solution, standing and defoaming are performed, drying is performed, and then the scale inhibitor is prepared. The preparation method has the advantages that when the prepared degradable slow-release scale inhibitor is put into an environment needing scale inhibition, the scale inhibitor is easy to decompose, friendly to the environment and good in scale inhibiting effect, cannot cause water eutrophication and does not need to be massively put due to the slow-release effect of the scale inhibitor.