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The sequencing batch process ist a special variation of the activated sludge process where all treatment processes take place in one tank. A clarifier is not required. The treatment mode is sequenced in different treatment stages.
In the field of biological waste water treatment two major systems are available. The different processes are activated sludge systems and biofilm systems. In case of activated sludge systems the sludge settles after the treatment process and the treated water can be discharged. At biofilm systems settles on the surfaces of the bed material and does the waste water treatment. The advantage of biofilm systems is the independence of the residual...
In contrary to fixed bed systems are in case of moving bed systems the biofilm carrier suspended in the waste water basin. The turbulence is achieved by aeration (aerobic) or mixing by agitators (anaerobic). Biomass removal is achieved by lamella separators or flotation. Besides the advantages simmilar the fixed bed systems always a acessability to agitators and aeration systems is given.
Precipitation common princip to transfer soluble components into sediments. Usually this sediments are mostly very fine or fine cristals. This sediments/cristals are produced by adding chemicals as sulfide, carbonate, organosulfides etc. is a In order to get a removebal sludge a second step is necessary, the flocculation.
Ionexchanger consist of colums filled with resins for anion and kation exchangers. Polluted water passes the collumns and will be treated by this process. The loaded resin remains in the collumns and will be regenerated by regeneration chemicals.
Adsorption is capable to accumulate low concentrations of pollutants from a high ammount of air or water. The concentrated pollutants can be discharged with the loaded activated carbon.