| Summary: | 碩士 === 長榮大學 === 職業安全與衛生學系碩士班 === 99 === Abstract
The total number of pigs about 6.2 million in Taiwan according to the Council of Agriculture (COA) in 2010 statistics. The manure can be collected about 0.2 kg per once per day, that can produce about 1,241,000 kg of manure per day. It’s will cause significant environmental problems without proper treatment.
This study is aimed to investigate the digestion rate and biogas production rate of waste activated sludge (WAS) with wasted sludge form food industry and pig manure by anaerobic codigestion.
There are four parts of this study, in the first parts add nitric acid to Investigate the most suitable of pH value and reaction time in waste activated sludge and pig manure. The second parts to investigate the effect of different pretreatment on the anaerobic by batch experiment. The third parts to investigate the effect of acid pretreatment on the anaerobic codigestion of WAS and wasted sludge form food industry. Lastly, to investigate the effect of different pretreatment on the anaerobic codigestion of pig manure and WAS.
The removal rate of anaerobic WAS digestion in batch experiment by acid pretreatment, the COD and TVS removal rate were about 23.4% and 24.3%. Pretreatment received by the acid of the COD and TVS removal rate increase 4.9%,6.6%, the methane yield were about 29.9 ml CH4/g COD added, which were the best results than the other pretreatment.
The anaerobic codigestion of pig manure and WAS by acid pretreatment can increase the removal rate and biogas yield, the methane yield about 47.0ml CH4/g COD added, and increase the TVS removal rate about 7.1% and COD removal rate 9.5%.
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