| Summary: | 碩士 === 國立成功大學 === 環境工程研究所 === 83 === The purpose of this research is to evaluate the odor removing
efficiency of livestock odorants by various types of biofilter
system. The pig waste compost、acidic peat、neutral peat and
neutral peat seeding with activated sludge were used as the
materials of biofilter. For hydrogen sulfide removing
experiments,it has shown that acidic peat biofilter was not
apparent biological reaction under the loading of 0.16-1.35g-S/
day.kg dry peat during 100 days operation period time. The
adsorption capacity of hydrogen sulfide,sulfate conversion rate
and hydrogen sulfide removal efficiency were found at 0.16g-S
、0.25g-S/day.kg dry peat and 50%,respectively. For ammonia
removing experiments,the compost biofilter was breakthrough at
the 20th day of operation time under the loading of 0.25g-N/day.
kg dry compost. The conversion of ammonium nitrogen and organic
nitrogen were 0.106 and 1.64g-N/day.kg dry compost,
respectively. For the other three biofilters,the acidic peat
biofilter was the best removing capacity of ammonia,and its
removal efficiency could arrive to 100%. For mixed hydrogen
sulfide and ammonia removing experiments, under the inlet
concentration rate of hydrogen sulfide and ammonia was 1:10,the
loading of ammonia (0.375g-N) and hydrogen sulfide(0.071g-S)/
day.kg dry compost condition,the ammonia was breakthrough on
23th day,and the conversion of ammonium nitrogen and organic
nitrogen were 0.27 and 1.56g-N/day.kg dry compost respectively.
Furthermore,for the acidic peat biofilter,the loading of
ammonia and hydrogen sulfide were raised to 0.86g-N and 0.16g-S/
day.kg dry peat on the 23th day after treatment.The conversion
of ammonium nitrogen and organic nitrogen by acidic peat were
0.12g-N and 0.23g-N/day.kg dry peat,respectivily.
|
|---|
