钢铁工业用水量十分大，并且产生的污水对环境造成的污染危害相当严重。
Steel industry water pretty big, and produce the sewage to the environment caused by pollution hazard is quite serious.
废水的产生过程十分复杂并且产生的废水处理难度大，钢铁工业废水的特点：废水量大，污染面广；
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,
废水成分复杂、污染物质多；
Wastewater complicated composition, pollution matter more,
废水水质变化大，造成废水处理难度大。
Wastewater quality change is big, causing wastewater treatment is difficult.
炼钢炼铁过程产生废水的特点不同，处理方式也不相同。
Steelmaking iron-making process produces different characteristics of wastewater, treatment is not identical also.
生产过程中的烟尘洗涤用水、设备冷却用水、轧钢厂废水等都需要妥善的处理后才可排入到环境当中，另外钢铁企业的很多种废水都产生温升，由于生产工艺不同，有的系统可不设冷却设备，如冲渣水。
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.
水温度的高低，对混凝沉淀效果以及解垢与腐蚀的程度均有影响。
Water temperature, or of coagulation precipitate effect and the degree of scale and corrosion solutions are influence.
设备间接冷却水系统应设冷却塔，而直接冷却水或工艺过程冷却系统，则应视具体情况而定，这种废水如直接排放，对环境将造成污染。
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.
因此应妥善处理钢铁企业产生的污水以减少对环境的污染，使其危害最小的同时研究开发新的处理技术对污水进行重复利用，因此节约工业新水用量，减少工业污水的排放量，是钢铁企业水系统所追求的目标。
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.