語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
A percolation biofilm-growth model f...
~
Ozis, Fethiye.
FindBook
Google Book
Amazon
博客來
A percolation biofilm-growth model for biomass clogging in biofilters.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
A percolation biofilm-growth model for biomass clogging in biofilters./
作者:
Ozis, Fethiye.
面頁冊數:
221 p.
附註:
Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 6196.
Contained By:
Dissertation Abstracts International66-11B.
標題:
Engineering, Environmental. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3196869
ISBN:
9780542427435
A percolation biofilm-growth model for biomass clogging in biofilters.
Ozis, Fethiye.
A percolation biofilm-growth model for biomass clogging in biofilters.
- 221 p.
Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 6196.
Thesis (Ph.D.)--University of Southern California, 2005.
Biomass accumulation has been recognized as a limiting factor in the operation of biofilters. As the biofilm thickens, portions at the base may no longer be exposed to contaminants and oxygen. Smaller pores are filled with biomass so that air no longer flows into them. As pores are blocked, air may be prevented from reaching some pores even when they are not filled. Eventually blockage becomes sufficiently widespread so that increasing head loss and decreasing removal efficiency require that the system be shut down. Optimization necessitates a better understanding of the mechanisms by which biofilter clogs. Percolation theory was developed for application to similar problems in other fields such as oil recovery and catalyst bed design. In this work, a numerical percolation model of the blockage process was developed for application to biofilters. It allows comparison of pore blockage histories for various pore size distributions, and predicts biomass accumulation, head loss, and treatment efficiency as a function of time, as well as total time until blockage prevents further operation.
ISBN: 9780542427435Subjects--Topical Terms:
783782
Engineering, Environmental.
A percolation biofilm-growth model for biomass clogging in biofilters.
LDR
:03135nmm 2200301 4500
001
1826577
005
20061227115700.5
008
130610s2005 eng d
020
$a
9780542427435
035
$a
(UnM)AAI3196869
035
$a
AAI3196869
040
$a
UnM
$c
UnM
100
1
$a
Ozis, Fethiye.
$3
1915537
245
1 2
$a
A percolation biofilm-growth model for biomass clogging in biofilters.
300
$a
221 p.
500
$a
Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 6196.
500
$a
Adviser: Joseph S. Devinny.
502
$a
Thesis (Ph.D.)--University of Southern California, 2005.
520
$a
Biomass accumulation has been recognized as a limiting factor in the operation of biofilters. As the biofilm thickens, portions at the base may no longer be exposed to contaminants and oxygen. Smaller pores are filled with biomass so that air no longer flows into them. As pores are blocked, air may be prevented from reaching some pores even when they are not filled. Eventually blockage becomes sufficiently widespread so that increasing head loss and decreasing removal efficiency require that the system be shut down. Optimization necessitates a better understanding of the mechanisms by which biofilter clogs. Percolation theory was developed for application to similar problems in other fields such as oil recovery and catalyst bed design. In this work, a numerical percolation model of the blockage process was developed for application to biofilters. It allows comparison of pore blockage histories for various pore size distributions, and predicts biomass accumulation, head loss, and treatment efficiency as a function of time, as well as total time until blockage prevents further operation.
520
$a
A model was developed and applied to two theoretical biofilters having log-normal pore size distribution with mu= 4 and 7. It was also used to simulate two bench-scale biofilters with experimentally determined pore size distributions.
520
$a
This model accounts for biomass growth and its impact on head loss, contaminant removal and channeling in the biofilter. It will be useful in biofilter design, particularly in the choice of appropriate packing. A complete understanding of the clogging process, and ultimately its control, would increase biofilter efficiency and broaden the range of applications.
520
$a
Finally, the removal efficiency of granular filters packed with lava rock and sand was studied for collection of airborne particles 0.05 to 2.5mum in diameter in anticipation of the possibility that either inert granular filters or biofilters could be used for treatment of fine particles. The effects of filter depth, packing wetness, grain size and flow rate on collection efficiency were investigated. Packed-bed granular filters were proved effective for removal of fine and ultrafine particles from air.
590
$a
School code: 0208.
650
4
$a
Engineering, Environmental.
$3
783782
690
$a
0775
710
2 0
$a
University of Southern California.
$3
700129
773
0
$t
Dissertation Abstracts International
$g
66-11B.
790
1 0
$a
Devinny, Joseph S.,
$e
advisor
790
$a
0208
791
$a
Ph.D.
792
$a
2005
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3196869
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9217440
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入