A/O anoxio/oxic A2/O or A/A/O anaerobic/Anoxio/Oxic AA active AI2O3 A-A-O biological nitrogen and phosphorus removal process AB adsorpti on biodegradation ABF activated bio-filter AC active carbon AF an aerobic filter ALK alkali A-O A-O phosphorusremoval process A-O A-O nitrogen removal process BFD block flow diagram BG backside grinding BHT butylated
In Wastewater treatment, common processes include physical methods, chemical methods, and biological methods. They have different usage objects and effect. Today we will first discuss physics method. The physical method mainly uses physical means to remove suspended solids, floating solids, and some dissolved substances in sewage, without changing the chemical
COD, or chemical oxygen demand, is an important indicator for measuring the degree of pollution of reducing substances in water. High COD wastewater, or wastewater with high chemical oxygen demand, usually means that the wastewater contains a large amount of organic matter. As its content increases, the oxygen deficiency in
