行政院國家科學委員會專題研究計畫成果報告:畜舍揮發性有機臭氣之生物過濾研究(3/3)
Date Issued
2003
2003-07-31
Date
2003
2003-07-31
Author(s)
DOI
912313B002295
Abstract
We contacted a laboratory test for microbial
degradation of livestock-generated ammonia in this year.
Ammonia, one of the gases produced in greatest volume
from swine waste, causes one of the biggest pollution
problems in swine farming resulting in ground water
nitrification and adverse effects on animal and human health.
Our objective is to neutralize malodor by using biofilters
packed with inexpensive inorganic and organic packing
material combined with multicultural microbial load at
uncontrolled temperatures. Peat and inorganic supporting
materials were used as biofiltration matrix packed in a
perfusion column through which gas was transfused. Results
show the ammonia removal significantly fell in between
99-100 % when ammonia concentration of 200 ppmv was
used at different gas flow rates ranged from 0.030 – 0.060
m3 h-1 at a fluctuating room temperature of 27.5±4.5°C.
Under these conditions, the emission concentration of
ammonia that is liberated after biofiltration is less than 1
ppmv (0.707 mg m-3) over the period of our study,
suggesting the usage of low-cost biofiltration systems for
long-term function is effective at wider ranges of
temperature fluctuations. The maximum (100%) ammonia
removal efficiency was obtained in this biofilter was having
an elimination capacity of 2.217 g m-3 h-1. This biofilter had
high nitrification efficiencies and hence controlled ammonia
levels with the reduced backpressure. The response of this
biofilter to shut down and start up operation showed that the
biofilm has a superior stability.
Subjects
Ammonia
Biofiltration
Microbial degradation
Removal efficiency
Publisher
臺北市：國立臺灣大學生物環境系統工程學系暨研究所
Type
report
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