chemical treatment(Processes that alter the chemical structure of the constituents of the waste to produce either an innocuous or a less hazardous material. Chemical processes are attractive because they produce minimal air emissions, they can often be carried out on the site of the waste generator, and some processes can be designed and constructed as mobile units)
chemical waste(Any by-product of a chemical process, including manufacturing processes. Often this by-product is considered a toxic or polluting substance)