Mixed liquor total suspended solids

The MLTSS (mixed liquor total suspended solids) in the aeration tank is therefore... 

The proportion of the respective population of heterotrophs and nitrihers varies with the ratio of the influent BOD5 to influent TKN as shown in Table 15.4. Based on this table, the concentrations of the respective species may be calculated. Also, the design total volatile solids (MLVSS, for mixed liquor volatile suspended solids) vary depending upon the type of activated sludge process being used. Table 15.5 shows some representative values. Note that the air supplied is measured at normal air temperatures. 

Inflow to the tank is normally interrupted during decantation, and hence, partitions may be made in the tank to continue the process and mixed liquor suspended solids shall not be washed out with the treated effluent. As a result, the total process cycle time can be reduced. 

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