Wastewater treatment method

The methods of wastewater treatment can be divided into the following types:
Physical method: precipitation, floating, centrifugal separation, filtration, etc.;
Chemical method: pH adjustment method (neutralization method), coacervation method, chemical oxidation method, chemical reduction method, adsorption method, precipitation method, ion exchange method, organic solvent extraction method, and biochemical method;
Physical and chemical methods: physical effects on the basis of chemical methods, through adsorption, precipitation, aeration, radiation, ultraviolet, high temperature, high pressure, and high-speed rotation. Such as the natural degradation method, that is, relying on the role of natural environmental forces to store and discharge the wastewater, the concentration of many pollutants including cyanide is reduced by daily sunlight, wind blowing, flow, etc., to reduce or eliminate some of the harmful Impurities. Another example is the addition of cyanide hydrolysis pressure, i.e. a certain pressure and a certain temperature in the reaction vessel, and adjusting an appropriate pH value, so that cyanide decomposed into ammonia and formate heavy metal cyanide oxides become no Poisonous or low toxic substances.
In actual work, wastewater treatment is often a combination of several methods. Usually divided into three levels of treatment, the first step can be used for preliminary purification of water by simple physical, chemical and physical chemical methods, and the second step by biochemical treatment. Among them, there are biological oxidation, biological reduction, etc., generally can remove about 90% of degradable organic matter and solid suspended matter, but biochemical methods are difficult to remove certain heavy metal poisons and high carbon compounds. In order to ensure qualified water quality, further physical and chemical methods can be used for advanced treatment.

The bendix is Spare parts for starter. From the Armature to get power, transmitted to the engine.