- 學位論文
酸前處理對豬糞尿與污泥厭氧共消化產能之研究
The Effect of Acid Pretreatment on the Anaerobic Codigestion of Pig Manure and Sludge
摘要
根據農委會2010年統計，在台灣豬隻飼養總頭數約有620.6萬頭，每日每頭可收集利用的糞量為0.2公斤，以全台灣豬隻飼養量來估算，則每日約可產生124.1萬公斤的糞量，若無適當的處理將對環境造成很大的問題。 本研究使用生活污水處理廠廢棄活性污泥與冷凍食品廠污泥、豬糞尿進行厭氧共消化實驗，以四個部份探討污泥減量及產能效益。第一部份利用添加硝酸的方式探討適合廢棄活性污泥及豬糞尿溶出重金屬的pH值及反應時間。第二部份以批次實驗探討不同前處理對厭氧消化的結果。第三部份比較酸前處理對食品廠與廢棄活性污泥厭氧共消化實驗的影響，第四部分探討不同前處理對豬糞尿與廢棄活性污泥厭氧共消化的影響。 生活污水廠廢棄活性污泥批次式厭氧消化實驗結果得知經過酸前處理的污泥COD去除率約為23.4%，TVS去除率為24.3%，與未前處理的污泥相比可以提升TVS去除率6.6%以及COD去除率4.9%，酸前處理的甲烷產率可達到約29.9 ml CH4/g COD added。 豬糞尿與廢棄活性污泥不同前處理方式厭氧共消化實驗結果顯示利用酸前處理，可以提高甲烷產率及TVS、COD的去除率，其中以豬糞尿酸前處理與廢棄活性污泥酸前處理共消化(D4)有較佳的效果，甲烷產率約47.0ml CH4/g COD added，並提高TVS 7.1%、COD 9.5%的去除率。
並列摘要
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%.