ACEE 434 Environmental Systems Design - Korea University

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BOD • The importance of measuring BOD (Biochemical Oxygen Demand) - To determine the approximate quantity of oxygen that will be required to biologically stabilize the organic matter present - To determine the size of wastewater facilities - To measure the efficiency of some treatment process - To determine compliance with wastewater discharge permit ACEE 434 Fall 2009 HDP 24
BOD • Three main activities of aerobic decomposition of organic wastes - Oxidation COHNS + O 2 + bacteria → CO 2 + H 2 O + NH 3 + other products + energy Organic waste - Synthesis COHNS + O 2 + bacteria + energy → C 5 H 7 O 2 N - Endogenous respiration C 5 H 7 O 2 N + 5O 2 → 5CO 2 + NH 3 + 2H 2 O New cell tissue ACEE 434 Fall 2009 HDP 25
Page 1 and 2: ACEE 434 Environmental Systems Desi
Page 3 and 4: Screen, Grit Removal Influent Prima
Page 5 and 6: Primary Treatments Primary clarifie
Page 7 and 8: Advanced Treatments Ozone disifecti
Page 9 and 10: Physical Constituents • Solids
Page 11 and 12: Size Range 0.45 -2.0μm: filter siz
Page 13 and 14: Temperature • Very important t pa
Page 15 and 16: Temperature The effect of temperatu
Page 17 and 18: pH • The concentration range suit
Page 19 and 20: Nitrogen • Nitrogen cycle denitri
Page 21 and 22: Gases • N 2 , O 2 , CO 2 , H 2 S,
Page 23: Organic Constituents • BOD •TOC
Page 27 and 28: BOD D1 − D2 BOD, mg / L = P ( D1
Page 29 and 30: BOD • The rate of BOD oxidation (
Page 31 and 32: Biological Constituents • Bacteri
Page 33 and 34: Indicator Organisms MetCalf and Edd
Page 35: Summary • Guri wastewater treatme

ACEE 434 Environmental Systems Design - Korea University

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