三废 Traditional form: 三廢 Pinyin (reading): sānfèi Definitions: three types of waste product, namely: waste water 廢水/废水 (fèishuǐ), exhaust gas 廢氣/废气 (fèiqì), industrial slag 廢渣/废渣 (fèizhā) Characters: 三 - three 废 - to terminate; to discard; to abgrogate Traditional characters: 三 - three 廢 - to terminate; to discard; to abgrogate