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

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.

What is true about sewage treatment?A Secondary treatment is called as biological treatment  B Primary treatment is physical treatment C Secondary treatment is highly oxygen requiring process  D All of the above

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.

Tertiary sewage treatment is designed to removeMultiple Choicelarge solids.suspended solids.sludge.nitrates and phosphates.dissolved organic compounds.

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