Background The lithium battery industry in the new energy sector generates wastewater mainly during the cleaning of the positive and negative electrode mixing tanks. The characteristics of this wastewater include a small volume, complex composition, poor biodegradability, and certain toxicity. The main components include lithium nickel cobalt manganese oxide, NMP (N-methyl-2-pyrrolidone), PVDF binder, SP, SBR binder,

Background The waste water in hazardous waste disposal centers/landfill industries mainly includes acidic wastewater, process wastewater, cleaning wastewater, and high-temperature cooking wastewater. Considering various sources of wastewater, it is evident that wastewater originates from multiple hazardous processing processes, containing various alkaline substances and high concentrations of salts internally, which

Background Petrochemical wastewater primarily originates from petrochemical plants, where it generates various pollutants such as oil, sulfur, alkali, and salt after undergoing a series of processes. Some components of its main pollutants, such as hydrogen sulfide, ammonia compounds, and trace heavy metals, are either difficult or unable to be biodegraded, thus posing challenges in wastewater treatment and leading to

Background Coal chemical wastewater treatment refers to the process of treating wastewater generated during coal chemical production, which contains organic and inorganic pollutants, to meet national emission standards. Coal chemical wastewater contains toxic and harmful substances such as phenols, cyanides, oils, and sulfur, making it difficult to treat. Coal chemical wastewater is mainly divided into two categories

Background Fine chemical wastewater is a typical type of toxic/difficult-to-degrade industrial organic wastewater characterized by high COD (Chemical Oxygen Demand), high ammonia nitrogen, and high color. The main components harmful to microorganisms in this wastewater are COD, ammonia nitrogen, heavy metal ions, dyes, and their decomposition products, especially organic pollutants. The organic components in fine che

Background The wastewater in the machining industry mainly comes from workshops such as machining, casting, forging, heat treatment, electroplating, welding, painting, and assembly. The typical wastewater discharged is oily wastewater, which accounts for 40 to 60 percent of the total discharge in the general machining industry. Pain points 1. The government’s environmental inspection efforts are stringent, and

Background Electroplating wastewater contains numerous inorganic and organic pollutants. Inorganic pollutants include heavy metal ions like copper, zinc, chromium, nickel, cadmium, and acidic or alkaline substances. Organic pollutants consist primarily of chemical oxygen demand, ammonia nitrogen, and fats. Based on pollutant characteristics, electroplating wastewater is primarily classified into the following categor