CIV342H1 Study Guide - Midterm Guide: Tolerable Daily Intake, Activated Sludge, Suspended Solids
Document Summary
Use of water: domestic, recreational, agricultural, industrial. Sources of water: groundwater, surface water, reclaimed water. Multiple barrier approach: monitoring sw protection -> treatment -> distribution -> comsumers. Water treatment objective: safe for human -> colour and odour, appealing to customer -> operate at reasonable costs. Water treatment removal: 1,pathogenic organism 2, suspended material 3, hazardous contaminants 4, odour, unpleasant tastes and colour. Waste water treatment objective: 1, removal of suspended and floatable material 2, treatment of biodegradable organics, 3,elimination of pathogenic organism 4, removal of nutrient. Tdi: tolerable daily intake is the amount of a substance that can be comsumed from all sources each day by an adult without risk. Threshold: a level below which adverse effects will not occur. Carcinogen: some possibility of harm, no threshold level. Water quality parameters class: 1, physical, chemical, microbiological, radiological. Solid: filterable, nonfilterable, volatile solid burn at 600. Chemical characteristics: alkalinity, hardness, nitrogen, heavy metal.
