The production of potash leads to producing lots of highly concentrated ammonium chloride wastewater, which will pollute the environment and waste useful resource if discharged directly.

碳酸钾生产过程中产生大量高浓度的氯化铵废水，直接排放污染环境，同时造成资源浪费。

youdao

Chemically, potash is potassium chloride (KCl) which is a metal halide salt composed of potassium and chlorine.

FORBES: How Arizona Is Helping America Reduce Dependence On Foreign Natural Resources