52results about How to "Flocculation" patented technology

The invention discloses a multifunctional efficient decolorizing flocculant and a preparation method thereof. The decolorizing flocculant includes 15-25% of formaldehyde, 12-20% of dicyandiamide, 22-28% of ammonium chloride, 13-18% of urea and 20-30% of inorganic salt; and the inorganic salt is one or more selected from aluminum salt, iron salt and silicon salt. The preparation is as below: adding formaldehyde accounting for 3/5-2/3 of the total formaldehyde in a reactor, then adding urea and dicyandiamide in turn for dissolving, heating to 40+/-2 DEG C-50 +/-2 DEG C, and conducting a polymerization reaction; adding ammonium chloride and the remaining formaldehyde, controlling the temperature at 80+/-2 DEG C-90+/-2 DEG C, conducting a second polymerization, and insulating for 2-4 h; and adding inorganic salt and stirring uniformly to obtain the flocculant. The decolorization flocculant has the advantages of solid content of more than 55%, wide application, decolorization rate of more than 95%, high flocculation speed and COD removal rate reaching more than 65%, improves the process requiring repeated addition of different organic and inorganic flocculants in water treatment, and solves the problem of influence of different order of operations on wastewater treatment effects.

The invention discloses a method for ecological remediation of a side slope. According to the method, a reasonable material proportion of a spraying-seeding substrate is summarized on the basis of a lot of test data and project experience, so that the physicochemical properties of the substrate reach the best indexes required for the growth of plants; compared with highly-dispersive soil particlesformed by technologies of the same kind, the soil structure with rich pores is formed by means of the method, can achieve water retention and ventilation, slow down leaching loss of nutrient elements, and guarantee the good growth of root systems of the plants; sprayed artificial soil is small in density, low in unit weight, and large in internal friction angle, is easily attached to a steep slope, and is unlikely to be peeled off; compared with the technologies of the same kind, the spraying-seeding thickness can be obviously increased, and the long-term growth demands of the plants are met.Through the use of polyacrylamide, the effect of flocculating the solid substrate is achieved, so that the substrate sprayed on the slope surface is subjected to solid-liquid separation, clear wateris filtered out, and the loss of the solid substrate and nutrients is reduced; in the dewatering shrinkage process of the substrate, the solid substrate forms a granular structure with certain porosity, and thus the growth of the plants is better facilitated.

The invention relates to the technical field of fertilizer processing and in particular relates to a manufacturing method of an efficient biological organic fertilizer. The manufacturing method comprises the following three steps of: (1) biogas residue manufacturing; (2) secondary settlement; and (3) sterilizing and packaging. In the manufacturing process, pig manure is soaked by adopting treatment water, so that foul smell of the pig manure is effectively reduced, and meanwhile, in the treatment process, self-made activated sludge can be adopted to treat the pig manure, so that peculiar smell of the pig manure can be effectively removed, and the BOD content in the pig manure sewage can be effectively reduced. By using a plant flocculant from independent research and development to treat the wastewater, secondary pollution is not caused while the flocculation effect in the wastewater is enhanced. By adopting a synergic additive from independent research and development, the content of microelements in the organic fertilizer is effectively increased.

The invention discloses a composite component for promoting sewage flocculation, which comprises the following raw materials in parts by weight: montmorillonite, 20-30 parts; calcite, 15-25 parts; attapulgite, 30-40 parts; wollastonite , 10-20 parts; borax, 10-20 parts; heavy calcium carbonate, 5-15 parts; talc powder, 5-15 parts; the mixture of mica powder and coal gangue, 6-8 parts; The ratio of parts by weight of gangue is 5-7:1. The composite component of the invention can well play the role of flocculation, effectively remove organic matter and heavy metal ions in the water body, reduce sewage turbidity, and improve sewage treatment efficiency. The preparation method provided by the invention is simple and practical, easy for large-scale preparation, and suitable for popularization.

The invention provides a landfill leachate composite water treatment agent which comprises the following raw material component in parts by weight: 42-50 parts of polyacrylamide, 34-40 parts of polyaluminium sulfate, 34-40 parts of sodium polyacrylate, 25-30 parts of chitosan, 23-26 parts of potassium ferrate, 25-30 parts of expanded graphite, 25-30 parts of pyrophyllite, 25-30 parts of medical stone, 25-30 parts of coal ash, 33-36 parts of modified palm barks, 33-36 parts of active cocoanut charcoal and 18-22 parts of horseradish tree bark powder. The landfill leachate composite water treatment agent provided by the invention has multiple functions of flocculation, oxidation, adsorption, sterilization and the like, not only are harmful organic substances and heavy metal ions in living landfill leachate efficiently removed, but also microorganisms such as bacteria in the leachate can be effectively killed, and burden and influence upon later treatment processes can be alleviated.

The invention provides an anaerobic ex-situ electro-release iron membrane bioreactor sewage advanced treatment and resource recovery system and a method thereof. The system comprises an electrolytic anaerobic biological reaction unit and a membrane separation unit, wherein a water inlet and a water outlet are formed in the electrolytic anaerobic biological reaction unit; wherein a water inlet of the electrolytic anaerobic biological reaction unit is connected with a sewage draining exit, a water outlet of the electrolytic anaerobic biological reaction unit is connected with the water inlet ofthe membrane separation unit, the membrane separation unit is provided with a clean water outlet and a sludge outlet, and the sludge outlet is connected with the water inlet of the electrolytic anaerobic biological reaction unit; the electrolytic anaerobic biological reaction unit is also provided with a sludge discharge port; the electrolytic anaerobic biological reaction unit is used for carrying out electrochemical degradation and anaerobic biological degradation on the wastewater; the membrane separation unit is used for carrying out aerobic biodegradation on the wastewater, dissolving phosphate and carrying out flocculent precipitation on colloidal particles and suspended particles causing membrane pollution; the method has the advantages of convenience and flexibility in operation, high treatment efficiency, good effluent quality, small occupied area, low energy consumption, high energy recovery rate and the like.

The invention discloses a stability regulator for a foliar fertilizer for improving the freshness of tea leaves, and a preparation method thereof, and relates to the technical field of foliar fertilizers of tea trees. The stability regulator is composed of a chelating agent, a synergist and a preservative, wherein the chelating agent can chelate amino acids to prevent free amino acids from flocculating or precipitating and make the amino acids have full effects; the synergist can improve the penetrability and the spreading ability of the foliar fertilizer, reduce the surface tension and improve the nutrient utilization rate; and the preservative has bacterium inhibiting and killing effects to prevent microorganism decomposition induced deterioration of the free amino acids during long-term storage. The stability regulator improves the stability of the amino acid foliar fertilizer under different conditions to prevent the flocculation or precipitation phenomenon.

The invention relates to the field of drinking water, and specifically designs a water treatment agent, the raw materials of which are calculated in parts by weight: 2-6 parts of polymerized alumina, 2-6 parts of anionic polyacrylamide, 15-20 parts of stable chlorine dioxide, 20-30 parts of Moringa extract, 10-15 parts of camphor leaf extract, 10-20 parts of peppermint extract, and 10-20 parts of cinchona bark extract. It can effectively play a preliminary water purification effect and provide a basis for pure water preparation.

The invention discloses an impurity removing and refining technology for crude zirconium tetrachloride and belongs to the technical field of chemical engineering. Hydroxide can be one of sodium hydroxide, potassium hydroxide and calcium hydroxide; and the concentration of the sodium hydroxide is 30 to 60 percent. The impurity removing and refining technology comprises the following steps: adding the sodium hydroxide into the crude zirconium tetrachloride, enabling the sodium hydroxide to be in sufficient contact with the crude zirconium tetrachloride, and then carrying out sedimentation and solid separation to remove solid impurities in the crude zirconium tetrachloride. A method provided by the invention can effectively reduce the impurities such as aluminum trichloride and silicon tetrachloride in the crude zirconium tetrachloride, and the sodium hydroxide, the aluminum trichloride and the silicon tetrachloride react to form colloidal aluminum hydroxide and sodium silicate; and the colloidal aluminum hydroxide and sodium silicate are used as flocculating agents, so that the sedimentation speed of other solid impurities in the zirconium tetrachloride can be accelerated and the impurity removing efficiency is effectively improved. Compared with a traditional gravity sedimentation method, the impurity removing and refining technology for the crude zirconium tetrachloride has thebeneficial effect that the impurity removing efficiency can be improved by 30 percent or above.

The invention discloses a rare earth recovery system. The rare earth recovery system comprises a filter tank, a clear liquid tank, a sedimentation tank and two dissolving tanks, wherein each dissolving tank comprises a filter pressing device and a uniform mixing device which are provided with linkage structures. The invention further discloses a rare earth recovery process using the rare earth recovery system. According to the rare earth recovery system and the rare earth recovery process, the filter pressing structures and the uniform mixing structures in the dissolving tanks are improved, so that the filter pressing structures and the uniform mixing structures can be subjected to linkage operation, the filter pressing efficiency is improved, the filtrate is fully dissolved, and the extraction rate of rare earth ore is improved. The rare earth recovery system is simple in structure, the rare earth recovery process is convenient and fast, large-batch rare earth recovery can be carried out, and manpower and material resources are saved.

The invention relates to an accelerant for improving the biological treatment effect of salt-containing wastewater. The accelerant mainly comprises a quaternary ammonium base and humus, and the quaternary ammonium base is at least one of choline phosphate, betaine, tetramethylammonium hydroxide and the like. The invention also provides a biological treatment method for treating high-salt wastewater by using the accelerant. The accelerator provided by the invention is simple in formula, easy to prepare, small in dosage, environment-friendly and economical. When the accelerator is used for biological treatment of salt-containing wastewater, the adaptability of a treatment system to a high-salt environment can be improved, and the treatment effect of ammonia nitrogen and total nitrogen in thesalt-containing wastewater is improved.

The invention relates to the field of drinking water, and specifically designs a plant water treatment agent, the raw materials of which are calculated in parts by weight: 10-20 parts of starch, 15-30 parts of Moringa extract, 15-20 parts of pine needle extract, and cypress extract 15-20 parts, 10-20 parts of peppermint extract, 10-20 parts of peony fresh leaf extract. It can effectively play the role of preliminary water purification and provide the basis for the preparation of pure water, and the use of pure plant ingredients will not cause secondary pollution to the water body and protect human health.

The invention discloses a phosphogypsum metal adsorption material and a preparation method thereof. The phosphogypsum metal adsorption material is prepared from raw materials including phosphogypsum,triethylene tetramine, tricyanogen chloride, epichlorohydrin, ferric chloride, fly ash and the like. A high-adsorption-amount raw material is obtained by carrying out calcination treatment on the phosphogypsum; nano iron oxide is synthesized by utilizing a water phase, and adsorption varieties of pollutants are increased; the adsorption efficiency on heavy metal is improved; then the raw materialis dissolved into a mixed solution system of the triethylene tetramine, the tricyanogen chloride and the like, so that a metal ion complexing functional group on the adsorption material is increased;furthermore, a cation group can have a flocculation effect on solid suspension matters, colloids and the like, so that the adsorption material is used for removing heavy metal ions, oil stain and thelike at the same time; the phosphogypsum metal adsorption material has the advantages of simple raw materials, relatively low production cost, good technology repeatability, high operability and capability of realizing amplified production, and has relatively high economic value.

The invention belongs to the technical field of sewage treatment, and particularly relates to a cosmetic sewage treatment process. According to the cosmetic sewage treatment process provided by the invention, cosmetic sewage successively passes through a flocculation sedimentation tank, an intermediate water tank, a hydrolysis acidification tank, a pH adjustment tank, an anaerobic tank, a biological contact oxidation tank, a secondary sedimentation tank and a clean water tank, and is finally subjected to up-to-standard discharge. According to the cosmetic sewage treatment process provided by the invention, the removal effect on organic pollutants in the cosmetic sewage is excellent, effluent discharge can reach the primary standard in the second period of Guang dong Province 'Water Pollutant Discharge Limit' (DB44/26-2001), meanwhile, the process is simple, efficient and easy to operate, the floor area is small, the cost is low, and operation benefits of enterprises and sewage treatment plants can be effectively increased.

The invention discloses a preparation method of hippophae rhamnoides fruit clear juice, and belongs to the technical field of deep processing of agricultural and sideline products. The preparation method of hippophae rhamnoides fruit clear juice is specially provided for solving the problems that the cost is high, and effective components and flavor substances of hippophae rhamnoides fruits are easy to lose in the preparation course in a present clarifying technology. Fruit juice is freeze-thawed, fermentation is performed with mixed bacteria, and two-stage flocculation effects of a flocculantare utilized, so that the hippophae rhamnoides fruit clear juice having high clarity and high transparence is obtained. The flavor substances and the nutrient substances of the hippophae rhamnoides fruit clear juice can be effectively reserved, various physiological active substances are maintained to the largest extent, and besides, the preparation cost is significantly reduced.

The invention discloses a method of treating stainless steel passivating cleaning wastewater by employing calcium carbide waste residue. The method comprises the following steps of: transferring stainless steel passivating cleaning wastewater into a neutralizing tank for alkali adjustment, then transferring the wastewater to a clarification pond, and adding cationic polyacrylamide to generate a metal hydroxide precipitate to obtain clarified waste liquor; mixing a calcium carbide waste residue suspension liquid; transferring the separated clarified waste liquor to a fluoridation pond, adding a hydrochloric acid solution, then adding the calcium carbide waste residue suspension liquid and polymeric aluminum and feeding the mixed liquid into a settling pond, wherein fluorine ions and calcium ions are combined to generate a CaF2 precipitate to be removed; and feeding the wastewater without the CaF2 precipitate into the final neutralization tank, adding a neutralizing liquid into the final neutralization tank to obtain treated waste liquor, and then discharging the waste liquor by means of a sand filter. The method disclosed by the invention uses the calcium carbide waste residue to replace lime for treating the stainless steel passivating cleaning wastewater, has the advantages of low cost and convenient in use, plays a role of treating waste with waste, and is remarkably in environmental benefit and economic benefit.

The invention discloses and provides a spread-making method and stir-frying method of sweet potato bean jelly. The bean jelly is exquisite and simple in method, chewy, soft and stable in taste, easy to digest, rich in nutrient and suitable for people of any taste. By means of the technical scheme, the method includes the three steps of making high-grade clear soup for spread-making the sweet potato bean jelly, spread-making the sweet potato bean jelly and stir-frying the sweet potato bean jelly. Nutritional values of sweet potatoes, meat, sea food and edible fungi are innovatively and organically fused, the nutritional values of various food materials are kept to the maximum extent, the additive, namely alums harmful to human bodies, is omitted in the making process, and the safety and health of food are ensured; the sweet potato bean jelly meets the healthy dietary requirements of people and conforms to the modern healthy life concept of people.

The invention relates to the field of sewage treatment, and particularly discloses an industrial wastewater treatment process. The process comprises the steps that: sewage is sequentially introduced into a grating, an air floatation tank, an adjusting tank, an anaerobic tank, an aerobic tank and an inclined tube sedimentation tank to be treated and then discharged, an air floatation agent is sprayed upwards from the bottom of the air floatation tank, and the air floatation agent is liquid nitrogen and has the advantages of reducing the separation difficulty of suspended solids and improving the air floatation efficiency.