答：常用（污）廢水處理方法物理處理法、化學處理法、生物處理法三種！

　　廢水處理的方法有哪些?

　　1.物理法 利用物理作用,使呈懸浮狀態的雜質從水中分離出來。物理法在處理廢水過 程中不改變水的基本化學性質。如沉淀、過濾、反滲透、氣浮、離心、蒸發等工 藝均屬于物理法的范疇。

　　2.化學法向廢水中投加某些化學藥劑,利用其產生的化學反應來分離、轉化、分解 或回收廢水中的污染物,使其轉化為無害物的方法稱為化學法。常用的化學法有 混凝、中和、吸附、氧化還原,離子交換等。

　　3.生物法 利用水中微生物的新陳代謝功能,將水中的**物分解,轉化為無害物,使 廢水得到凈化的方法稱為生物法。如活性污泥、生物膜、自然生物處理等均屬于 生物法。

　　4.理化處理方法:主要有電解、吸附、膜分離和磁選,以去除懸浮物、膠 體和可溶性物質。

　　廢水處理三大基本方法

　　**種方法：物理處理法。主要是利用物理作用分離污水中的非溶解性物質，在處理過程中不改變化學性質。其中物理處理主要是利用機械設備來處理。常用的有重力分離、離心分離、反滲透、氣浮等。

　　第二種方法：化學處理法。主要是利用化學法進行處理，在廢水中加入化學物質，使之和污染成分發生一定的化學反應，產生對人體、自然無害的物質或者是膠體，從而去除掉水中的雜質。

　　第三種方法：生物處理法。生物處理法是處理工業廢水為常用的一種方法，一般會作為預處理，是利用微生物的新陳代謝功能，將污水中呈溶解或膠體狀態的**物分解氧化為穩定的無機物質，使污水得到凈化。

　　常用的污水處理方法是以上三種，另外還有電氧化法、膜法深度處理、污水蒸發法等很多處理方法。

　　以上污水處理基本的處理方法常用于以下工業廢水處理：

　　電廠廢水、蘭炭廢水、玻纖廢水、垃圾滲濾液廢水、船舶燃料油廢水、屠宰場廢水、電鍍廢水、含油廢水、含鹽廢水、食品廢水、氟化工廢水、選礦廢水、紡織印染廢水、石化煉化廢水、鋁加工廢水、光伏多晶硅廢水、煤制油廢水、化肥廠廢水、煤化工高鹽廢水、礦業廢水、橡膠廢水、陶瓷廢水、油漆涂料廢水、含磷廢水、磷化工廢水、含酚廢水、釀酒廢水、含汞廢水、鋼鐵廠廢水、油田廢水、選礦廢水、焦油廢水處理、制革廢水、皮革廢水、煤制氣廢水、金屬加工廢水、含鉻廢水、研磨廢水、精細化工廢水、造紙廢水、印刷線路板廢水、煤礦礦井水廢水、稀土廢水、化工廢水、醫藥廢水、焦化廢水、重金屬廢水、化纖廢水、礦山廢水、高鹽染料廢水、乳化液廢水、玻璃加工廢水、印刷油墨廢水、冶金廢水、染料廢水、淀粉廢水、制藥廢水、養殖廢水、電子廠廢水、半導體廢水、機械加工廢水、表面處理廢水、含焦油廢水、煤焦油廢水、燃煤電廠脫硫廢水。

　　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.