本帖最後由 pipe 於 2020-12-30 11:49 編輯 據經驗,水管清洗的汙水,依顏色可分為五種:含雜菌類的乳白色水;含汙染源的藍色水;含有汙泥、菌藻類、重金屬的黑色水;含鐵鏽、重金屬的咖啡色水;含有菌藻類的綠水 ...
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