ASCE 2 91:1991 Edition

$21.67

ASCE Standard 2 Measurement of Oxygen Transfer in Clean Water

Published By	Publication Date	Number of Pages
ASCE	1991	62

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Category: ASCE

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Description

Measurement of Oxygen Transfer in Clean Water, 2nd Edition was developed to measure the rate of oxygen transfer from diffused gas and mechanical oxygenation devices to water. The standard is applicable to laboratory-scale oxygenation devices with small volumes of water as well as to full-scale systems with water volumes typical of those found in the activated sludge wastewater treatment process. It is intended that this standard be used by engineers in the preparation of specifications for compliance testing. This test method is based upon removal of dissolved oxygen (DO) from the water volume by sodium sulfite followed by reoxygenation to near the saturation level. The DO inventory of the water volume is monitored during the rearation period by measuring DO concentrations at several points, selected so that each point senses an equal tank volume. The method specifies a minimum number, distribution, and range of DO measurements at each point. This procedure is valid for a wide variety of mixing conditions. The primary result of this testing is expressed as the standard oxygen transfer rate (SOTR). The standard also describes how clean water tests can be applied to estimate oxygen transfer rate in process water. In addition, various components of power consumption are defined; methods for measurement of gas rate and power consumption by oxygenation devices are given; and the preparation of data analysis is discussed.

PDF Catalog

PDF Pages	PDF Title
2	Abstract Abstract
3	Standards Standards
5	Foreword Foreword
7	Acknowledgments Acknowledgments
11	1.0 Scope 1.0 Scope 2.0 Summary of Method 2.0 Summary of Method 3.0 Significance and Limitations 3.0 Significance and Limitations
12	4.0 Definitions and Nomenclature 4.0 Definitions and Nomenclature Oxygen Transfer Rate (OTR) Oxygen Transfer Rate (OTR) Standard Oxygen Transfer Rate (SOTR) Standard Oxygen Transfer Rate (SOTR) Aeration Efficiency (AE) Aeration Efficiency (AE) Standard Aeration Efficiency (SAE) Standard Aeration Efficiency (SAE) Oxygen Transfer Efficiency (OTE) Oxygen Transfer Efficiency (OTE) Standard Oxygen Transfer Efficiency (SOTE) Standard Oxygen Transfer Efficiency (SOTE) 5.0 Apparatus and Methods 5.0 Apparatus and Methods 5.1 Tank 5.1 Tank 5.2 Water 5.2 Water 5.3 Oxygenation Device 5.3 Oxygenation Device 5.4 Sampling Devices 5.4 Sampling Devices
13	Dissolved Oxygen Measurement Dissolved Oxygen Measurement 5.6 Temperature Measurement 5.6 Temperature Measurement 5.7 Deoxygenation Chemicals 5.7 Deoxygenation Chemicals Computer or Calculator Computer or Calculator Gas Flow Measurement Apparatus Gas Flow Measurement Apparatus Power Measurement Apparatus Power Measurement Apparatus 6.0 Procedure 6.0 Procedure Advance Preparation and Responsibilities Advance Preparation and Responsibilities
14	Test Tank Geometry and Aerator Placement Test Tank Geometry and Aerator Placement 6.3 Water Quality 6.3 Water Quality
15	6.4 System Stability 6.4 System Stability
16	6.5 Initial Test 6.5 Initial Test 6.6 Deoxygenation Chemicals 6.6 Deoxygenation Chemicals Addition of Deoxygenation Chemicals Addition of Deoxygenation Chemicals
17	During the Unsteady-State Test During the Unsteady-State Test
18	Dissolved Oxygen Measurements Dissolved Oxygen Measurements
19	7.0 Data Analysis 7.0 Data Analysis Preparation of Data for Analysis Preparation of Data for Analysis 7.2 Parameter Estimation 7.2 Parameter Estimation
20	8.0 Interpretation and Reporting of Results 8.0 Interpretation and Reporting of Results Standard Oxygen Transfer Rate (SOTR) Standard Oxygen Transfer Rate (SOTR)
21	Spatial Uniformity and Reproducibility of K a and C Values Spatial Uniformity and Reproducibility of K a and C Values Standard Aeration Efficiency (SAE) Standard Aeration Efficiency (SAE)
22	Oxygen Transfer Efficiency (OTE) Oxygen Transfer Efficiency (OTE) Performance Evaluation Criteria Performance Evaluation Criteria 9.0 Reporting 9.0 Reporting
23	References References
24	Annex A Annex A
25	Annex B Annex B
27	Annex C Annex C
28	Annex D Annex D
30	Annex E Annex E
31	Annex F Annex F
32	Commentary A Commentary A Commentary B Commentary B
33	Commentary C Commentary C Commentary D Commentary D
48	Commentary E Commentary E
49	Commentary F Commentary F
53	Index Index