Lecture 43 - Nonhazardous Organic Compounds Lecture#43...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Nonhazardous Organic Compounds Lecture #43 review BOD concept Wastewater treatment and aeration ICP #38 Reading: review V: Ch. 8 (pg. 163-173); PS#8 due; PS#9 out What you should know 1. How is BOD removed from wastewater? 2. What type of reactors are commonly used in BOD treatment processes? 3. What reactor concepts and methods can we use to assess the extent of removal of BOD from rivers and lakes? Biochemical Oxygen Demand (BOD) Biochemical Oxygen Demand (BOD) rate at which organics are consumed is assumed to be first order dL t /dt = -kL t (where L t ( mg/L) is the oxygen equivalent of the organics at time, t, and k ( d -1 ) is the first order reaction constant) integrating gives first order decay result: L t = L 0 exp(-kt) (L 0 , total oxygen equivalent of organics at t = 0 and L t the amount remaining at time t) Biochemical Oxygen Demand (BOD) Biochemical Oxygen Demand (BOD) ultimately want amount of oxygen consumed not how much is remaining BOD t = L 0 - L t BOD t = L 0 - L 0 exp(-kt) or BOD t = L 0 (1 - exp(-kt)) The ultimate BOD u
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern