Drying characteristics of sawdust matrix in the dry composting toilet
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- Ito Ryusei
- Division of Built Environment, Graduate School of Engineering, Hokkaido University
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- Ogawa Shingo
- Division of Built Environment, Graduate School of Engineering, Hokkaido University
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- Funamizu Naoyuki
- Division of Built Environment, Graduate School of Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- おがくずマトリックスの乾式コンポスト型トイレにおける乾燥特性
Description
Drying of the mixture of human waste and sawdust is an essential process for the dry composting toilet system, because moisture content, that is an important factor for biodegradation process, should be kept around 65%. The drying rate is required for design of the system and planning an operation policy with stable operation, but the rate for the system has never been studied. So, we investigated the effect of operational conditions on the drying rate using two devices of different size, lab-scale equipment and full-scale toilet for one personal use. As a result, the drying rate is described by a drying kinetic model with adequacy calibration of water-vapor pressure at the drying surface for each device. The coefficient of full-scale toilet is estimated from the result of lab scale equipment considering the circulation air flow. Then, the drying rate could be estimated from operational conditions for simple design and planning an operation policy of the composting toilet system from the view point of drying.
Journal
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- ENVIRONMENTAL ENGINEERING RESEARCH
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ENVIRONMENTAL ENGINEERING RESEARCH 43 437-442, 2006
Japan Society of Civil Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282679087723008
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- NII Article ID
- 130003949540
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- ISSN
- 1884829X
- 13415115
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed
