Search Results for: Oxygen therapy apparatus
many distinctive chemical characteristics. these include high concentrations of ammonium, nitrate, nitrogen , phosphorus , high conductivity (due to high dissolved solids), high alkalinity, with ph typically ranging between and . the organic matter of sewage is measured by determining its biological oxygen
demand (bod) or the chemical oxygen demand (cod). pathogens[ edit ] sewage contains human feces , and therefore often contains pathogens of one of the four types: [ ] [ ] bacteria (for example salmonella , shigella , campylobacter , vibrio cholerae ), viruses (for example hepatitis a , rotavirus , enteroviruses...
https://en.wikipedia.org/wiki/Sewage