Exam (elaborations)
REHS Exam: Private Onsite Wastewater Treatment and Disposal Exams
- Institution
- Chamberlain College Of Nursing
Biochemical Oxygen Demand (BOD) The difference between the initial dissolved O2 in a water sample and dissolved O2 in a duplicate sample after a stated period of time (usually 5 days). Best single measure of wastewater or polluted water. Chemical Oxygen Demand (COD) A measure of the amount of ...
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