CG Vyapam_CE Environmental Quiz-6

In biological wastewater treatment process, which option matches List I with List II correctly from the given codes?

A fresh sludge has moisture content of 98% and after thickening its moisture content is reduced to 97%. The reduction in volume of sludge is

The purpose of proportional weir at the effluent end of a channel type grit removal unit is to?

In a high rate trickling filter, the problem of ponding can be solved by

Select the correct sequence of different phases of biomass curve:

High COD to BOD ratio of an organic pollutant represents :

An anaerobic reactor, operated at 35°C, treats wastewater with a flow of 200 m³/d and a biological soluble COD (bsCOD) concentration of 500 g/m³. At 90% bsCOD removal and a biomass synthesis yield of 0.04 g Volatile Suspended Solids/g bsCOD used, calculate amount of COD consumed (in kg/d)?

Calculate contribution of removal of phosphorous in primary settling tank to overall removal in wastewater treatment plant? Plant schematic is: influent water → Primary settling tank → Biological aeration tank → Secondary settling tank → Effluent water.

Sludge treatment is mainly done in order to:

The units in which both sedimentation & digestion process of sludge take places simultaneously is