sewage sludge digestion污水: sewage; slops; effluent; dra ...淤: become silted up渣: dregs; residue; sediment煮: boil; cook; stew解: understand; see下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:污水淤渣煮解,即可在微信中查询翻译