Including: New energy, photovoltaics, solar energy, lithium batteries, wind energy, new energy vehicles, new materials, electricity, power plants (nuclear power, photovoltaic power, thermal power) etc. wastewater
Currently, the physicochemical method is generally adopted for treatment. There are many treatment methods, and quite a few of them are effective, but not many can achieve overall compliance. The main source of zinc in electroplating and metal processing wastewater is the drag liquid from electroplating or acid washing. The pollutants are transferred to the washing water during the metal washing process.
At present, in China, the treatment of electroplating wastewater mainly involves classifying it into three categories:
1. Chromium-containing wastewater: mainly treated with oxidation to remove hexavalent chromium.
2. Cyanide-containing wastewater: mainly treated with cyanide removal.
3. Other wastewater: including copper, nickel, zinc, etc.
The sources of electroplating wastewater are generally as follows: (1) cleaning water of plated parts; (2) waste electroplating solution; (3) other wastewater, including water from flushing the workshop floor, washing the electrode plates, condensate from ventilation equipment, as well as various electrolyte solutions and drainage caused by leakage of the electroplating tank or improper operation and management; (4) cooling water of equipment. The cooling water is not contaminated during use, except for the increase in temperature. The quality and quantity of electroplating wastewater are related to factors such as electroplating production process conditions, production load, operation management and water usage methods. The quality of electroplating wastewater is complex and the components are difficult to control. It contains heavy metal ions such as chromium, cadmium, nickel, copper, zinc, gold, silver, and cyanide, and some of them are carcinogenic, teratogenic, mutagenic toxic substances.





Including: New energy, photovoltaics, solar energy, lithium batteries, wind energy, new energy vehicles, new materials, electricity, power plants (nuclear power, photovoltaic power, thermal power) etc. wastewater
Including: Domestic sewage, wastewater from hospitals, nursing homes, medical institutions, schools, hotels, port terminals, etc.
Including: Slaughterhouse processing, seafood markets, processing of agricultural and sideline products, food processing, flavors and fragrances, dairy processing, edible oil, pickled mustard tubers, oils and fats, beverage processing, condiment processing, kitchen wastewater, etc.
Including: Chemical mines, oil fields, petrochemical industry, acid-base industry, fertilizer industry, plastic industry, dye industry, detergent industry, pharmaceuticals, plant extraction, Chinese medicinal materials, pesticides, pharmaceutical chemicals, bleaching and dyeing, dyes, hydrogen peroxide, alcohol, graphite, emulsions, printing, high-salt content, fertilizer, coal chemical industry, organic silicon, cosmetics, oil refining, daily chemicals, etc.
Including: Ternary materials, electrolyte, iron phosphate, silicon carbide wastewater, negative electrode materials, positive electrode materials, anodic oxidation, optics, microelectronics, semiconductors, single/multi-crystalline silicon, IC crystalline silicon, integrated circuits, cathode ray tubes, circuit boards, computer components, capacitors, degreasing, rust removal, self-etching, phosphating wastewater cleaning of parts, electroplating solution, waste stripping plating solution, surface adjustment wastewater and degreasing, rust removal and erosion wastewater, electroplating, mechanical, painting, boiler manufacturing, electrophoresis, acid washing, galvanizing, painting, metal cutting fluid, automotive metal parts processing, smelting, copper-containing, ultrasonic, circuit boards, machine tools, containers, zippers, metal cleaning, phosphating, electrolysis, buttons, polishing, oxidation, baking paint, hot galvanizing, eyeglasses, acids and bases, electrolytic manganese, etc.
Including: Dyeing and printing, steel production, LCD production, semiconductor production, industrial chemical production, wastewater reuse for daily use, bottled water, centralized water supply, etc.
Including: Metals, hardware, aluminum materials, aluminum alloys, steel, stainless steel, iron, sheet metal, metallurgy, casting, rare earth, rare earth products, metal minerals, titanium metal processing, titanium products, red forging, mechanical processing wastewater, mines, smelting, electrolysis, paint, steel plants, grinding, acid washing and phosphating, textiles, pharmaceuticals, biological preparations, glass, printing, harmless treatment of animals, research institutes, packaging, chemical fibers, fibers, gloves, wool, feathers, engineering, cement, ceramics, concrete, mixing stations, human urine, bentonite, gypsum, stone products, paper products, leather, spraying, coatings, desulfurization, rubber (latex, plastic, silicone) gel, resins, hazardous waste, etc.