If WWTP treatment efficiencies are 70% for BOD and 80% for suspended solids. BOD and SS of wastewater inter the plant are 45 and 60 mg/l respectively. The effluent BOD and SS are *

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Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.