42results about How to "Achieve zero discharge treatment" patented technology

The invention relates to a zero-discharge treatment process for industrial cleaning wastewater, belonging to the technical field of water treatment. In order to solve the problem that there is no better treatment method for a large amount of waste water generated during the process of removing pollutants and self-oxides on the surface of silicon wafers, the invention discloses a treatment method for cleaning waste liquid. On the one hand, the method can effectively recover solids such as silicon powder, and on the other hand, can effectively recycle the active components in the cleaning solution, and at the same time, can also achieve the effect of zero discharge of the entire cleaning solution.

The invention discloses a method for treating landfill leachate by using biofilm sponge as a biological evaporating expanding agent and a biological carrier in combination with MVC. The method adopts an MVC system, preparation of biofilm sponge and a biological evaporating system. The biofilm sponge is prepared through inoculating polyurethane sponge with activated sludge and carrying out aerating and cultivation for acclimation; the leachate is subjected to MVC evaporation treatment to generate a concentrated liquor, and the concentrated liquor is treated through biological evaporation technology. According to the invention, metabolic heat generated by degradation of organic pollutant microorganisms in the MVC concentrated liquor is utilized to evaporate water in the concentrated liquor; the biofilm sponge which is light in weight, is easily available and is short in culture period and free of secondary pollution is used as the biological evaporating expanding agent and the biological carrier, and heat in the concentrated liquor and condensate water generated by MVC treatment are utilized for the needs of a heat source in the biological evaporating process, so that heat energy in the whole system is recycled to the maximum extent. Problems in the conventional pure physical separation process are overcome, and not only can water in the leachate be evaporated, but also polluting substances in the leachate can be reduced.

The invention discloses a recovery treatment agent for zero discharge of rolling waste liquid, and also discloses a treatment method for realizing zero discharge of rolling waste liquid by using the above recovery treatment agent, the treatment method can carry out rolling waste emulsion Thorough oil-water separation, the separated oil can be mixed with rolling crude oil in proportion for reuse, and the water phase can be used as daily water replenishment for rolling mills, thus realizing zero-discharge treatment of waste emulsion. The lubricating performance of the mixed oil obtained after blending the oil phase of the oil phase with the rolling crude oil is equivalent to that of the rolling crude oil.

The invention provides a chloride ion passivator, which comprises the following components in terms of mass percentage: 0.001-0.2% of amine, 0.0001-0.01% of fat, and the balance is water; the amine is polyacrylamide and / or alkene Amine, described grease is acrylic acid-acrylate copolymer, or acrylic acid-AMPS-maleic anhydride terpolymer; Also provide a kind of preparation method of chloride ion deactivator; Also provide a kind of desulfurization wastewater treatment method, adopt above-mentioned Chloride ion deactivator. In the present invention, after the desulfurization wastewater is added with a passivating agent, the chloride ion is deactivated, the corrosion of the chloride ion is blocked, and the desulfurization wastewater is turned into non-corrosive ordinary wastewater for evaporation and crystallization treatment, which significantly reduces the investment cost of the system and greatly improves The life and reliability of the system, no by-products appear, realize the zero discharge treatment of desulfurization wastewater, and protect the water resource environment.