99results about How to "No hazardous waste" patented technology

The invention discloses an acid-resistant chelating resin combinational adjusting and controlling method for quality-divided recycling complex heavy metal, and belongs to the field of heavy metal wastewater resourceful treatment. The acid-resistant chelating resin combinational adjusting and controlling method for quality-divided recycling complex heavy metal comprises the following steps that strong acid wastewater with a plurality of heavy metals are sequentially pumped into an absorbing column which is filled with different kinds of acid-resistant chelating resin, by stair-stepped adjusting and controlling of the pH value (pH is smaller than or equal to 3) of the solution, multistage selective separation of a plurality of heavy metal ions such as copper, nickel, cobalt, zinc and iron can be achieved, treated water mainly contains molysite which can be used for producing the iron-based flocculating agent or water purifying agent; high concentrated regenerating liquid is obtained by adopting diluted acid to regenerate acid-resistant chelating resin, and high purity recycling can be achieve by technologies such as neutralization. According to the acid-resistant chelating resin combinational adjusting and controlling method for quality-divided recycling complex heavy metal, by stair-stepped adjusting and controlling of the pH value of wastewater and preferential combining of the acid-resistant chelating resin, selective separating and quality-divided recycling of the complex heavy metal in strong acid wastewater are realized, and remarkable environmental benefit and economic benefit are achieved.

The invention relates to an iodine battery device, and relates to the technical field of new energy. The technical problems of low efficiency, safety and environmental protection in the prior art aresolved. The iodine battery device provided by the invention comprises an iodine battery device. Iodine is used as the raw material of the iodine battery device. When charging is carried out, oxidationreaction occurs in a periodic acid chamber. Iodic acid is oxidized to periodic acid. In the hydroiodic acid chamber thereof, reduction reaction occurs, and elemental iodine is reduced to hydriodic acid. The iodine battery device is a discharge process which is the reverse reaction of the above reaction. The entire process can control the start and end points of reaction through a potential value.Iodine is a high-value raw material. After a battery is scrapped, the battery can be recycled. The iodine battery device prevents loss of economic value and hazardous waste, is conducive to social environmental protection, and prevents battery explosion.

The invention relates to the technical field of bivalirudin, and particularly relates to a technical method for synthesizing bivalirudin protected pentapeptide fragment by a mass high-performance liquid chromatography method. According to the method, Fmoc-Pro-OSu is used as an initial raw material, is condensed with dipeptide to obtain a protected tripeptide; and the protected tripeptide is condensed with dipeptide, and recrystallization is performed to obtain the compound. The method has the advantage of mild reacting condition, the production requirement can be met by conventional productionconditions; the product is refined by adopting a crystallization method, has low cost, simple operation and high yield in comparison with column chromatography; and hydrofluoric acid and other fluorine-containing compounds are not use, and environmental pollution is small.

The invention relates to a desulfurization and denitration method for boiler flue gas. The method is mainly used for solving the problem that the existing boiler flue gas desulfurization and denitration are high in operating cost and secondary pollution is caused. According to the method, through adopting the technical scheme that nitrogen oxides and sulfides are removed from the boiler flue gas by an adsorption method, and the nitrogen oxides and the sulfides in the regenerated flue gas are subjected to salt making treatment, the above problem is better solved; the method can be applied to industrial production of desulfurization and denitration of the boiler flue gas.

The invention provides a low-temperature desulfurization and denitrification method for coke oven flue gas, relates to the desulfurization and denitrification method for the coke oven flue gas, and aims to solve the problems of high running cost and generation of secondary pollution in an existing desulfurization and denitrification process of the coke oven flue gas. The method involved in the invention is characterized in that a microcrystalline material adsorption method is adopted to remove sulfide from coke oven gas or blast furnace gas to be burned in a coke oven before the coke oven gasor blast furnace gas enters the coke oven, and then the coke oven gas or blast furnace gas burns; an adsorption method is then used to remove nitrogen oxides and the sulfide from the coke oven flue gas; and oxidation is performed on the nitrogen oxides and the sulfide in the regenerated flue gas to realize resource utilization. Therefore, the above technical problems are well solved. The method can be applied to the industrial production of desulfurization and denitrification of the coke oven flue gas.