Transcription of Basic General Wastewater Study Guide
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Basic General Wastewater Study Guide
Printed on 01/12/17 Basic General Wastewater Study GuideWisconsin Department of Natural Resources Operator Certification Program PO Box 7921, Madison, WI 53707 2015 Edition (Revised June 2016)Wisconsin Department of Natural ResourcesThe Wisconsin Department of Natural Resources provides equal opportunity in its employment, programs, services, and functions under an Affirmative Action Plan. If you have any questions, please write to Equal Opportunity Office, Department of Interior, Washington, 20240. This publication is available in alternative format (large print, Braille, audio tape. etc.) upon request. Please call (608) 266-0531 for more Operator CertificationPrinted on 01/12/17 PrefaceThe General Wastewater Study Guide is an important resource for preparing for the certification exam and is arranged by chapters and sections. Each section consists of key knowledges of important informational concepts you need to know for the certification exam.
BOD, expressed in mg/L, is a measurement of the organic strength of a sample by measuring the amount of oxygen consumed over a given period of time. A composite sample is a sample prepared by combining a number of grab samples, typically over a 24-hour period. DO is the measure of the amount of oxygen dissolved in water and is expressed in mg/L.
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