- 低溶解氧污泥微膨脹前后污泥硝化活性的對比研究
- Comparison Analysis of Sludge Nitrification Activity Before and After Microbulking with Low Dissolved Oxygen
- 左金龍， 王淑瑩， 彭趙旭， 姜安璽， 劉洋， 彭永臻， 孫治榮
- 土木與環(huán)境工程學報（中英文） 2009年31卷第4期 頁碼：117-122
- DOI：10.11835/j.issn.1674-4764.2009.04.023
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紙質(zhì)出版日期：2009
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摘要
為了研究低溶解氧微膨脹前后污泥硝化活性的變化，采用SBR反應器，平均DO濃度為0.6 mg/L~0.9 mg/L，測定污泥微膨脹前后污泥氧消耗速率曲線。結(jié)果表明：發(fā)生污泥微膨脹后，活性污泥對COD的去除能力有較大的提高，而對氨氮去除能力卻有一定的下降。污泥微膨脹前后的氧消耗速率曲線顯示，微膨脹前活性污泥總活性為67.72 mgO2/gVSS·h，其中硝化活性為43.12 mgO2/g VSS·h，占其總活性的63.67%；而微膨脹后活性污泥總活性為90.49 mgO2/gVSS·h，其中硝化活性為2
Abstract
In order to investigate the variation of sludge nitrification activity before and after microbulking with low dissolved oxygen(DO), with mean DO value of 0.6mg/L-0.9 mg/L，the sequence batch reactor (SBR) was employed to test the oxygen consumption velocity curves before and after microbulking. The results showed that COD removal ability increased, whereas the ammonia nitrogen removal effect was decreased with microbulking of sludge. The oxygen consumption velocity curves before and after microbulking showed that the total activity of activated sludge was 67.72 mgO2/gVSS·h before microbulking, of which nitrification activity was 43.12 mgO2/gVSS·h, that is, 63.67% of the total activity. And the total activity of activated sludge was 90.49 mgO2/gVSS·h after microbulking, of which nitrification activity was 23.98 mgO2/gVSS·h, that is, 26.51% of the total activity. The low DO value was the limited substrates for microorganism growth. When activated sludge was in the state of microbulking, the filamentous bacteria were the dominant bacteria, whereas the nitrification bacteria were subordinate. Thus the total nitrification activity of activated sludge decreased.
