答：常用（污）废水处理方法物理处理法、化学处理法、生物处理法三种！

　　废水处理的方法有哪些?

　　1.物理法 利用物理作用,使呈悬浮状态的杂质从水中分离出来。物理法在处理废水过 程中不改变水的基本化学性质。如沉淀、过滤、反渗透、气浮、离心、蒸发等工 艺均属于物理法的范畴。

　　2.化学法向废水中投加某些化学药剂,利用其产生的化学反应来分离、转化、分解 或回收废水中的污染物,使其转化为无害物的方法称为化学法。常用的化学法有 混凝、中和、吸附、氧化还原,离子交换等。

　　3.生物法 利用水中微生物的新陈代谢功能,将水中的**物分解,转化为无害物,使 废水得到净化的方法称为生物法。如活性污泥、生物膜、自然生物处理等均属于 生物法。

　　4.理化处理方法:主要有电解、吸附、膜分离和磁选,以去除悬浮物、胶 体和可溶性物质。

　　废水处理三大基本方法

　　**种方法：物理处理法。主要是利用物理作用分离污水中的非溶解性物质，在处理过程中不改变化学性质。其中物理处理主要是利用机械设备来处理。常用的有重力分离、离心分离、反渗透、气浮等。

　　第二种方法：化学处理法。主要是利用化学法进行处理，在废水中加入化学物质，使之和污染成分发生一定的化学反应，产生对人体、自然无害的物质或者是胶体，从而去除掉水中的杂质。

　　第三种方法：生物处理法。生物处理法是处理工业废水为常用的一种方法，一般会作为预处理，是利用微生物的新陈代谢功能，将污水中呈溶解或胶体状态的**物分解氧化为稳定的无机物质，使污水得到净化。

　　常用的污水处理方法是以上三种，另外还有电氧化法、膜法深度处理、污水蒸发法等很多处理方法。

　　以上污水处理基本的处理方法常用于以下工业废水处理：

　　电厂废水、兰炭废水、玻纤废水、垃圾渗滤液废水、船舶燃料油废水、屠宰场废水、电镀废水、含油废水、含盐废水、食品废水、氟化工废水、选矿废水、纺织印染废水、石化炼化废水、铝加工废水、光伏多晶硅废水、煤制油废水、化肥厂废水、煤化工高盐废水、矿业废水、橡胶废水、陶瓷废水、油漆涂料废水、含磷废水、磷化工废水、含酚废水、酿酒废水、含汞废水、钢铁厂废水、油田废水、选矿废水、焦油废水处理、制革废水、皮革废水、煤制气废水、金属加工废水、含铬废水、研磨废水、精细化工废水、造纸废水、印刷线路板废水、煤矿矿井水废水、稀土废水、化工废水、医药废水、焦化废水、重金属废水、化纤废水、矿山废水、高盐染料废水、乳化液废水、玻璃加工废水、印刷油墨废水、冶金废水、染料废水、淀粉废水、制药废水、养殖废水、电子厂废水、半导体废水、机械加工废水、表面处理废水、含焦油废水、煤焦油废水、燃煤电厂脱硫废水。

　　Answer: there are three common (sewage) wastewater treatment methods: physical treatment, chemical treatment and biological treatment!

　　What are the methods of wastewater treatment?

　　1. Physical method uses physical action to separate suspended impurities from water. Physical method does not change the basic chemical properties of water in the process of treating wastewater. Such as sedimentation, filtration, reverse osmosis, air flotation, centrifugation, evaporation and other processes belong to the scope of physical law.

　　2. Chemical method the method of adding some chemical agents to the wastewater and using the chemical reaction produced by it to separate, transform, decompose or recover the pollutants in the wastewater and convert them into harmless substances is called chemical method. Common chemical methods include coagulation, neutralization, adsorption, oxidation-reduction, ion exchange, etc.

　　3. Biological method uses the metabolic function of microorganisms in water to decompose organic substances in water and convert them into harmless substances, so as to purify wastewater, which is called biological method. For example, activated sludge, biofilm and natural biological treatment are all biological methods.

　　4. Physical and chemical treatment methods: mainly including electrolysis, adsorption, membrane separation and magnetic separation to remove suspended solids, colloids and soluble substances.

　　Three basic methods of wastewater treatment

　　The first method: physical treatment. It mainly uses physical action to separate insoluble substances in sewage, and does not change chemical properties in the process of treatment. Among them, physical processing is mainly handled by mechanical equipment. Commonly used are gravity separation, centrifugal separation, reverse osmosis, air flotation, etc.

　　The second method: chemical treatment. It is mainly treated by chemical method. Chemical substances are added to the wastewater to make it react with polluting components to produce substances or colloids that are harmless to human body and nature, so as to remove impurities in the water.

　　The third method: biological treatment. Biological treatment is a commonly used method to treat industrial wastewater, which is generally used as pretreatment. It uses the metabolic function of microorganisms to decompose and oxidize the dissolved or colloidal organic matter in the sewage into stable inorganic substances, so that the sewage can be purified.

　　The commonly used sewage treatment methods are the above three. In addition, there are many treatment methods, such as electrooxidation, membrane advanced treatment, sewage evaporation and so on.

　　The above basic sewage treatment methods are commonly used for the following industrial wastewater treatment:

　　Power plant wastewater, blue carbon wastewater, glass fiber wastewater, landfill leachate wastewater, ship fuel oil wastewater, slaughterhouse wastewater, electroplating wastewater, oily wastewater, salt containing wastewater, food wastewater, fluorine chemical wastewater, beneficiation wastewater, textile printing and dyeing wastewater, petrochemical refining wastewater, aluminum processing wastewater, photovoltaic polysilicon wastewater, coal to oil wastewater, fertilizer plant wastewater, coal chemical high salt wastewater, mining wastewater, rubber wastewater, ceramic wastewater Paint and coating wastewater, phosphorus containing wastewater, phosphorus chemical wastewater, phenol containing wastewater, wine making wastewater, mercury containing wastewater, steel plant wastewater, oilfield wastewater, beneficiation wastewater, tar wastewater treatment, tanning wastewater, leather wastewater, coal to gas wastewater, metal processing wastewater, chromium containing wastewater, grinding wastewater, fine chemical wastewater, papermaking wastewater, printed circuit board wastewater, coal mine water wastewater, rare earth wastewater, chemical wastewater, pharmaceutical wastewater Coking wastewater, heavy metal wastewater, chemical fiber wastewater, mining wastewater, high salt dye wastewater, emulsion wastewater, glass processing wastewater, printing ink wastewater, metallurgical wastewater, dye wastewater, starch wastewater, pharmaceutical wastewater, aquaculture wastewater, electronic factory wastewater, semiconductor wastewater, mechanical processing wastewater, surface treatment wastewater, tar containing wastewater, coal tar wastewater, desulfurization wastewater of coal-fired power plants.