34results about How to "Reduce the content of heavy metal elements" patented technology

The invention relates to an application of a highly alkalized soil improvement agent in improving soil. The highly alkalized soil improvement agent comprises the following raw materials in parts by weight: 88-92 parts of desulfurized waste, 1-3 parts of inorganic accelerator, and 5-11 parts of organic accelerator. The highly alkalized soil improvement agent provided by the invention has the beneficial effects that calcium ions in the desulfurized waste are used to replace exchangeable sodium on the densityalkalized soil colloid, thus reducing the alkalization degree of the densityalkalized soil; at the same time, the excellent pore structure and physical property of the organic accelerator are used to improve the physical property of the soil and the granular structure of the soil, reduce the pH value of the soil, and improve the soil fertility; the inorganic accelerator can also improve the granular structure of the soil; in addition, with auxiliary inorganic fertilizer and organic fertilizer, the soil fertility of the soil can be further improved so as to provide nutrient contents for plant growth. To sum up, by adopting the scheme in the invention, unbalance of nutritive elements in the soil can be effectively overcome, the land capability is improved, the soil is loosened, and the fertilizer efficiency is increased, so that the soil salinization phenomenon is fundamentally harnessed step by step.

The invention discloses an environment-friendly interior wall putty powder and putty paste and a preparation method thereof. The putty powder includes the following components in parts by weight: 45-72 parts of talcum powder, 18-30 parts of heavy calcium carbonate, 5-10 parts of calcium-based bentonite, 0.6-1.5 parts of sodium carboxymethyl cellulose, 1-5 parts of polyacrylamide, 0.3-1.7 parts of hydroxyethyl cellulose; 0-20 parts of building gypsum powder, carboxymethyl cellulose 0-0.8 parts, 0-8 parts of α-pregelatinized starch, 0-3 parts of hydroxypropyl methylcellulose, and 0-0.5 parts by weight of sodium dodecylbenzenesulfonate. The preparation method of the putty powder is to mix the above-mentioned components evenly, and then discharge after stirring for 10-15 minutes. Add 0.3 to 0.5 times the weight of the putty powder and water into the putty powder and stir evenly to obtain the putty paste. The putty powder / putty paste of the present invention does not contain or only contains a small amount of formaldehyde, and the content of heavy metal elements is extremely low, which belongs to the green environmental protection product; it has excellent impact resistance, excellent hydrophobicity and water resistance, high elasticity, and good crack resistance performance, storage stability and easy construction.

The invention discloses a novel rubber activator and a preparation method thereof. The rubber activator particularly comprises 20 to 80 percent of aromatic group-containing formic acid type metal salt and 20 to 80 percent of zinc oxide, wherein the aromatic group-containing formic acid type metal salt is mixed with the zinc oxide at normal temperature and the two are stirred for 5 to 15 minutes at the rotation speed of between 2,000 and 3,500rpm. Compared with the prior art, the problems of high zinc content and high heavy metal element content in the zinc oxide can be effectively solved, density is reduced, dispersibility is improved, and the novel rubber activator improves rubber tensile property, broken chain elongation rate and rubber cross-linking effect.

The invention provides a method for removing heavy metals from fly ash, which comprises the following steps: adding a dispersant after magnetic separation of the fly ash and removing iron, stirring evenly, and then dispersing by vibration, performing electrostatic separation, and sieving to obtain a particle size The fly ash particles between 0.1 and 20 μm; the fly ash particles with a particle size between 0.1 and 20 μm obtained by screening enter the first classification chamber for a centrifugal separation, and the large particles settle into the second classification chamber. Secondary air is introduced into the second grading chamber, so that the small particles in it float up into the first grading chamber, and fly ash particles with an average particle size of less than 10 μm are screened out. After the fly ash goes through the steps of iron removal, dispersing, electrostatic separation and centrifugal separation in sequence, the fine particles are completely separated out, and this part of the fine particles is enriched with a large amount of heavy metal elements, so the present invention can effectively reduce dust. Content of heavy metal elements in coal ash.

The invention relates to a conditioner for severely alkaline soil and a processing method of the conditioner. The conditioner for the severely alkaline soil comprises the following raw materials in parts by weight: 88-92 parts of desulfuration waste, 1-3 parts of inorganic accelerator and 5-11 parts of organic accelerator. According to the conditioner for the severely alkaline soil, calcium ions in the desulfuration waste are used for replacing exchangeable sodium on a soil colloid, so that the alkalisation degree of the soil is reduced; an excellent pore structure and physical properties of the organic accelerator are used for improving physical characteristics and a granular structure of the soil; the pH value of the soil is decreased; the soil fertility is increased; the inorganic accelerator also can improve the granular structure of the soil; an inorganic fertilizer and an organic fertilizer are additionally adopted to further increase the soil fertility; and nutritional ingredients are provided for crop growth. In a word, the conditioner can effectively overcome nutritional element unbalance in the soil, increase the soil fertility, loosen the soil, improve the fertilizer efficiency and fundamentality control soil salinization gradually.

The invention relates to a fertilizer containing bone meal and a preparation method thereof, belonging to the technical field of fertilizers. The fertilizer containing bone meal is made of the following raw materials in parts by weight: 8-13 parts of bone meal; 6-10 parts of humic acid; 5-8 parts of distiller's grains; 7-12 parts of cassava dregs; 5-10 parts of edible fungus residue ; 47‑55 parts of livestock manure; 3‑5 parts of orange peel; 0.5‑1 part of expanded vermiculite; 20‑25 parts of crop straw powder; 3‑5 parts of potassium chloride; 4‑6 parts of superphosphate. The nutrients contained in the fertilizer prepared by the present invention are relatively comprehensive, and the fertilizer effect is stable and long-lasting. Using the fertilizer prepared by the present invention to fertilize crops not only reduces the production cost of crops, promotes early maturity of crops, improves the quality of crops, and can also improve soil It promotes the formation of soil aggregate structure, makes the soil soft, improves the soil structure and improves soil fertility.

The invention relates to a conditioner for moderately alkaline soil and a processing method of the conditioner. The conditioner for the moderately alkaline soil comprises the following raw materials in parts by weight: 80-90 parts of desulfuration waste, 3-5 parts of inorganic accelerator and 8-15 parts of organic accelerator. According to the conditioner for the moderately alkaline soil, calcium ions in the desulfuration waste are used for replacing exchangeable sodium on a soil colloid, so that the alkalisation degree of the soil is reduced; an excellent pore structure and physical properties of the organic accelerator are used for improving physical characteristics and a granular structure of the soil; the pH value of the soil is decreased; the soil fertility is increased; the inorganic accelerator also can improve the granular structure of the soil; an inorganic fertilizer and an organic fertilizer are additionally adopted to further increase the soil fertility; and nutritional ingredients are provided for crop growth. In a word, the conditioner can effectively overcome nutritional element unbalance in the soil, increase the soil fertility, loosen the soil, improve the fertilizer efficiency and fundamentality control soil salinization gradually.

The invention relates to a low-oxygen dependent X-photodynamic nano photosensitizer as well as a preparation method and an application thereof. The low-oxygen dependent X-photodynamic nano photosensitizer comprises nano scintillation crystal particles capable of converting a high-energy radiation ray into an ultraviolet light, a silicon dioxide layer cladded on the surface of the nano scintillation crystal, zinc oxide nanoparticles loaded on the outer surface of the silicon dioxide layer, and polyethylene glycol grafted on the surfaces of the zinc oxide nanoparticles. The nano scintillation crystal capable of converting the high-energy radiation ray into the ultraviolet light is taken as a functional kernel; the nano scintillation crystal can emit a characteristic ultraviolet ray when being irradiated by an X ray; and the characteristic ultraviolet ray can be efficiently absorbed by shell ZnO semiconductor quantum dots, so as to generate electron hole pairs. A lot of high-activity hydroxyl radicals (.OH) and superoxide anions (.O2<->) are generated by complicated physical and chemical reaction, so as to damage cancer cells.

The invention relates to an application of a moderate alkaline soil modifier to soil improvement. The moderate alkaline soil modifier comprises, by weight, 80 to 90 parts of desulfation wastes, 3 to 5 parts of inorganic accelerators and 8 to 15 parts of organic accelerators. According to the moderate alkaline soil modifier, calcium ions in the desulfation wastes are utilized to replace exchangeable sodium on soil colloid, so that the alkalinity of the soil is reduced; simultaneously excellent pore structures and physical properties of the organic accelerators are utilized, so that the physical properties and the granular structure of the soil can be improved, the potential of hydrogen (pH) value of the soil can be reduced, and the soil fertility is increased; the granular structure of the soil can be improved as well by the aid of the inorganic accelerators; and the soil fertility can be further improved by the aid of inorganic fertilizers and organic fertilizers, and nutritional ingredients can be provided for crop growth. In a word, the moderate alkaline soil modifier has the advantages that the unbalanced nutrition elements in the soil can be effectively avoided, the soil fertility can be improved, the soil can be loosened, the fertilizer efficiency is increased, and the soil salinization and alkalization can be gradually and radically treated.

The invention relates to use of mild alkali-affected soil conditioner in the aspect of improving soil. The mild alkali-affected soil conditioner comprises the following raw materials, by weight, 70-80 parts of desulfuration waste, 5-10 parts of inorganic accelerator and 10-20 parts of organic accelerator. The mild alkali-affected soil conditioner uses calcium ions in the desulfuration waste to substitute exchangeable sodium so as to reduce alkalization degree of the soil. Simultaneously, by means of a good pore structure and physical performance of the organic accelerator, a physical behavior of the soil and a granular structure of the soil are improved, a pH value of the soil is reduced, and soil fertility is improved. The inorganic accelerator can also improve the granular structure of the soil. The soil fertility can be further improved by combining inorganic fertilizer and organic fertilizer, and nutritious ingredients are provided for crop growth. The mild alkali-affected soil conditioner can effectively overcome the defect of unbalanced nutritious elements in the soil, improves soil fertility, loosens the soil, improves fertilizer efficiency, and enables a soil salinization phenomenon to be avoided fundamentally.