ENV ENG 2601 FINAL Exam Questions And Verified Accurate Answers.

Turbidity - correct answer One aspect of water treatment that is tested 24/7 at the water plant DBP - correct answer Disinfection by product compounds formed after disinfectants are added to disinfect water or wastewater dischards RCRA - correct answer Resource Conservation and Recovery Act Legislation that covers Solid Waste in the US (1976) Alkalinity - correct answer Ability of a solution to resist pH change from acid addition Trickling Filter Attached Growth - correct answer A biological wastewater treatment process where a biofilm (i.e. bugs) grows in a thin layer on rocks or plastic as water is stress on top Refuse Derived Fuel - correct answer Is produced from processing solid waster for improved combustion characteristics Fecal/Coliforms/Ecoli - correct answer Indicator organisms that are used as a standard test of potential pathogen contamination if drinking water supplies SDWA - correct answer Safe Drinking Water Act Legislation that addresses drinking water quality Primary drinking water standard - correct answer MCL must be met by law (for safety/health) Secondary drinking water standards - correct answer Recommended for quality (taste/odor) NPDES Permit - Who sets the limit? - correct answer States - MO DNR NPDES Permit - What must all permits set limits upon (on all) - correct answer BOD, TSS NPDES Permit - What is commonly listed? - correct answer Nitrogen, NO3, Phosphorus, and Ecoli NPDES Permit - Explain why that can be so variable. (Why some are very strict, others not) - correct answer Based on stream/lake use or value i.e. Meremac = very strict vs Mississippi = who cares Properties that make waste a characteristic 'Hazardous Waster'? - correct answer Ignitable, Corrosive, RCRA Regulation and subclass that covers hazardous waste - correct answer Reactive, toxic, health Anaerobic Digestion - correct answer Creates CO2 and CH4 from waste biosolids 3R's in EPA Solid Waste Management - correct answer Reduce, reuse, recycle