Summary of Long-term Rapid Infiltration System Studies PDF Download
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Author: Lowell E. Leach
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 62
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Author: Lowell E. Leach
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 62
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Author: Mark R. Matsumoto
Publisher:
ISBN:
Category : Land treatment of wastewater
Languages : en
Pages : 88
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Book Description
The rapid infiltration (RI) land treatment process is a reliable, cost effective method for secondary and/or tertiary treatment of municipal wastewaters. When properly designed and operated, RI systems can achieve a significant level of nitrogen removal via coupled biological processes, namely nitrification-denitrification. Generally, it is believed that lower overall nitrogen levels can be achieved when influent wastewater is fully nitrified. However, at a specific RI facility located in Colton, CA higher nitrogen removals were observed when non-nitrified influent wastewaters were introduced. As a result, it was first hypothesized that an abiotic mechanism, ammonium adsorption, to the soils was occurring. This hypothesis, led to the conduct of an initial effort to evaluate the sorptive phenomenon that was occurring at this site. As a result of that initial effort, it was determined that ammonium adsorption was not occurring and that no nitrogen removal was observed under abiotic (sterile) conditions. Nitrogen removal was observed only under biotic conditions. Subsequent to that initial effort, a second study was conducted in an effort to confirm and better understand the biological nitrogen removal mechanisms that are occurring at the Colton RI facility. In addition, experiments were conducted to evaluate whether nitrogen removal could be enhanced at the facility via organic carbon amendment to the influent wastewater. For design purposes, a 2:1 mass ratio of organic carbon to nitrogen is recommended for nitrogen removal in RI systems. The normal organic carbon to nitrogen ratio at the Colton RI facility is 1:3, highly organic carbon deficient. Experimental systems were amended with additional organic carbon in the form of methanol. Additional organic carbon in the Colton RI facility influent water may improve the denitrification rate within some portions of the soil column.
Author:
Publisher:
ISBN:
Category : Effluent quality
Languages : en
Pages : 106
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 602
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Author:
Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 770
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Author:
Publisher:
ISBN:
Category : Effluent quality
Languages : en
Pages : 16
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Author: Cold Regions Research and Engineering Laboratory (U.S.)
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 196
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Author: Shuenn-Yih Chang
Publisher: CRC Press
ISBN: 0203388070
Category : Technology & Engineering
Languages : en
Pages : 972
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Book Description
Advances in Civil Engineering and Building Materials presents the state-of-the-art development in: - Structural Engineering - Road & Bridge Engineering- Geotechnical Engineering- Architecture & Urban Planning- Transportation Engineering- Hydraulic Engineering - Engineering Management- Computational Mechanics- Construction Technology- Buildi
Author: United States. Environmental Protection Agency
Publisher:
ISBN:
Category : Environmental protection
Languages : en
Pages : 374
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Author:
Publisher:
ISBN:
Category : Sewage irrigation
Languages : en
Pages : 902
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