丰满妇女毛茸茸刮毛,久久永久免费人妻精品下载,日韩精品少妇无码受不了,无码国产精品一区二区av

Textile leather

Textile wastewater typically has high pH, high organic contaminants, high salinity (in most cases sulfate), toxic, and pigmented properties. Different production processes, different composition of wastewater: such as degumming, washing, dyeing and finishing, the wastewater quality produced by each process section is completely different. The biggest problem is usually chroma and toxicity. It is not enough to use only aerobic biological treatment methods, and the cost of physical treatment is very high. In response to the need for wastewater containing high concentrations of COD and the need for color and toxic substances to be removed, Amocos uses an anaerobic and aerobic combination process.

Successful cases