Raw material washing wastewater: This is the largest part of food processing wastewater, usually accounting for 60%-70% of the total wastewater. When washing raw materials such as vegetables, fruits, and meat, a large amount of wastewater containing mud, sand, peels, and minced meat will be generated. This type of wastewater
1.Coking wastewater is a typical toxic and difficult to degrade organic wastewater.Sources of coking wastewater Coking wastewater mainly comes from multiple links in the coal coking production process, among which residual ammonia accounts for the largest proportion, followed by wastewater generated by processes such as coal gas purification and chemical
2. Classification of electroplating wastewater based on pollutant composition and process linksIt can be mainly divided into three categories. 1). Chromium-containing wastewater: mainly hexavalent chromium (Cr⁶⁺), which is highly toxic and carcinogenic. It needs to be converted into low-toxic trivalent chromium (Cr³⁺) through chemical reduction (such as sodium sulfite), and
