Steel industry water pretty big, and produce the sewage to the environment caused by pollution hazard is quite serious.
廢水的產生過程十分復雜並且產生的廢水處理難度大，鋼鐵工業廢水的特點：廢水量大，汙染面廣；
Wastewater generation process is very complex and produce for the wastewater treatment is difficult, and steel industry characteristics of wastewater: wastewater quantity is big, pollution wide,
廢水成分復雜、汙染物質多；
Wastewater complicated composition, pollution matter more,
廢水水質變化大，造成廢水處理難度大。
Wastewater quality change is big, causing wastewater treatment is difficult.
煉鋼煉鐵過程產生廢水的特點不同，處理方式也不相同。
Steelmaking iron-making process produces different characteristics of wastewater, treatment is not identical also.
生產過程中的煙塵洗滌用水、設備冷卻用水、軋鋼廠廢水等都需要妥善的處理後才可排入到環境當中，另外鋼鐵企業的很多種廢水都產生溫升，由於生產工藝不同，有的系統可不設冷卻設備，如沖渣水。
Production process of soot washing water cooling of equipment, water, need appropriate rolling effluent were discharged into the handle only after they environments, in addition to steel enterprises many wastewater produces temperature, because the production process is different, some systems don't set cooling equipment, such as cinder water.
水溫度的高低，對混凝沈澱效果以及解垢與腐蝕的程度均有影響。
Water temperature, or of coagulation precipitate effect and the degree of scale and corrosion solutions are influence.
設備間接冷卻水系統應設冷卻塔，而直接冷卻水或工藝過程冷卻系統，則應視具體情況而定，這種廢水如直接排放，對環境將造成汙染。
Equipment indirect cooling water system should establish cooling tower, and direct cooling water cooling system, or process will be changed according to the concrete situation and decide, this kind of wastewater such as direct emissions, to the environment will cause pollution.
因此應妥善處理鋼鐵企業產生的汙水以減少對環境的汙染，使其危害最小的同時研究開發新的處理技術對汙水進行重復利用，因此節約工業新水用量，減少工業汙水的排放量，是鋼鐵企業水系統所追求的目標。
Therefore should be properly handled steel enterprises produced sewage to reduce pollution to the environment, make its harm the smallest and research development of new processing technology of the sewage repeated use, so save industrial new water consumption and reduce industrial sewage emissions, is a steel enterprise water system by the pursuit of the goal.