BIOL 4090 Chapter : Wastewater Treatment Answers
Document Summary
Tertiary treatment of wastewater is practiced for additional protection of wildlife after discharge into rivers and lakes. Most processes involve some type of physicochemical treatment, such as coagulation, filtration, activated carbon adsorption of organics, reverse osmosis, and additional disinfection. High-rate infiltration, because of the use of sandy coarse soils. Virus removal is influenced by infiltration rates, electrostatic charge on the virus, hydrophobic interactions, van der waals forces, type of soil, water ph salts in solution, types of virus and soluble organic matter (see chapter 19). Nitrogen may be taken up by the plants or by denitrification by the soil bacteria. The incidence of infection within the community, the socioeconomic status of the population, the time of year, the per capita water consumption: five milliliters of a wastewater sample is added to dilution water in a 300-ml. 24. 1 bod3(mg/l) = d1 d3 / p. Thus: d1 = 9. 55 d3 = 3. 20 d5 = 2. 40.
