Which of the following processes in sewage treatment does NOT involve the use oforganisms?A. Biological Nitrogen RemovalB. Pasteurization of Sludge CakeC. Activated-sludge SystemD. Trickling-filter SystemE. None of the above.

BIOLOGICAL TREATMENT IS ALSO CALLED AS ___________ TREATMENT IN WASTE WATER CONTROL METHODS.Question 17Answera.preliminaryb.secondaryc.tertiaryd.sludge

Three statements are provided here which define the terms – (a) sludge (b) sewage and (c) wastewater. Pick out the correct definition for each of these terms. ​[3 Marks]The settled solids that are removed in wastewater treatment with a scraper. ​Water from kitchen used for washing dishes. ​Wastewater released from homes, industries, hospitals and other public buildings.

Multiple Choice QuestionDuring primary treatment, wastewater Blank______.Multiple choice question.flows through a trickling filter bed or aeration tank to break down organic compoundsis passed through a large metal grating to remove solids from the waste streamis discharged into a lagoon or wetland to remove inorganic nutrients

Multiple Choice QuestionA Blank______ system first takes wastewater to a tank where grease and oils rise to the top, and solids settle to the bottom where bacteria decompose them.Multiple choice question.septicprimary treatment"night soil"sewage

Microorganisms are involved in each of the following processes EXCEPTGroup of answer choicesfood production.O2 production.decomposition of organic material.smog production.infection.Next