1.磨光、抛光废水  在对零件进行磨光与抛光过程中，由于磨料及抛光剂等存在，废水中主要污染物为COD、BOD、SS。 一般可参考以下处理工艺流程进行处理：  废水→调节池→混凝反应池→沉淀池→水解酸化池→好氧池→二沉池→过滤→排放 2.除油脱脂废水  常见的脱脂工艺有：有机溶剂脱脂、化学脱脂、电化学脱脂、超声波脱脂。除有机溶剂脱脂外，其它脱脂工艺中由于含碱性物质、表面活性剂、缓蚀剂等组成的脱脂剂，废水中主要的污染物为pH、SS、COD、BOD、石油类、色度等。  一般可以参考以下处理工艺进行处理：  废水→隔油池→调节池→气浮设备→厌氧或水解酸化→好氧生化→沉淀→过滤或吸附→排放  该类废水一般含有乳化油，在进行气浮前应投加CaCl2破乳剂，将乳化油破除，有利于用气浮设备去除。当废水中COD浓度高时，可先采用厌氧生化处理，如不高，则可只采用好氧生化处理。 3.酸洗磷化废水  酸洗废水主要在对钢铁零件的酸洗除锈过程中产生，废水pH一般为2－3，还有高浓度的Fe2＋，SS浓度也高。 可参考以下处理工艺进行处理：  废水→调节池→中和池→曝气氧化池→混凝反应池→沉淀池→过滤池→pH回调池→排放

1., polishing and polishing wastewater in the process of polishing and polishing parts, due to abrasives and polishing agents exist, the main pollutants in wastewater are COD, BOD, SS. The general may refer to the following treatment process for wastewater treatment: to regulate pool, coagulation reaction tank, sedimentation tank, hydrolysis acidification tank, aerobic pond, two sink the pond, filtering, discharge 2. oil degreasing degreasing process wastewater are common: organic solvent degreasing, chemical degreasing, electrochemical degreasing, ultrasonic degreasing. In addition to other organic solvent degreasing, degreasing process due to containing alkaline substances, surface active agent, corrosion inhibitor and degreasing agent composition, the main pollutant in wastewater is pH, SS, COD, BOD, oil and chroma. General can refer to the following treatment process of wastewater treatment: to oil separation tank, regulating pond, air flotation equipment, or anaerobic hydrolysis acidification, aerobic biochemical treatment, precipitation, adsorption, filtration or discharge of the wastewater containing emulsified oil, in the air before adding CaCl2 demulsifier, will get rid of emulsified oil, is conducive to the removal of with air flotation equipment. When the concentration of COD in wastewater is high, anaerobic biochemical treatment can be adopted. If not high, aerobic biochemical treatment can only be used. 3. pickling pickling waste water is mainly produced in the pickling process of steel parts, pH wastewater is generally 2-3, there is a high concentration of Fe2 +, SS concentration is high. The treatment can be carried out according to the following treatment process: waste water, regulating tank, neutralization tank, aeration oxidation tank, coagulation reaction tank, sedimentation tank, filter tank, pH callback pool and discharge