Anaerobic digestion of ozonized biosolids
Anaerobic digestion of ozonized biosolids
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DOI：
10.1016/s0043-1354(99)00373-5
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发表时间：
2000-06
期刊：
影响因子：
12.8
通讯作者：
M. Weemaes;H. Grootaerd;F. Simoens;W. Verstraete
中科院分区：
文献类型：
--
作者：
M. Weemaes;H. Grootaerd;F. Simoens;W. Verstraete
研究了氧化预处理对污泥厌氧消化的影响。采用臭氧对某生活污水处理厂的污泥进行部分氧化。预处理可以改变高达67%的有机物：29±3%被溶解，38±9%被去除。厌氧降解性试验表明，预处理步骤增强了后续的厌氧消化污泥。甲烷产量增加了1.8倍，臭氧处理后，在0.1克O3/克化学需氧量（COD）的剂量，而甲烷生产率是2.2倍，比未经处理的污泥。较高的臭氧剂量，虽然仍然是积极的，被发现有一个不太明显的影响。有限的臭氧处理似乎与随后的生物固体消化相容，并且在经济上是可行的。
The effect of an oxidative pretreatment on the anaerobic digestion of sewage sludge was investigated. Sewage sludge from a domestic wastewater treatment plant was partially oxidized by ozone. The pretreatment could alter up to 67% of the organic matter: 29±3% was solubilized, 38±9% was removed. Anaerobic degradability tests indicated that the pretreatment step enhanced the subsequent anaerobic sludge digestion. The methane production was increased by a factor of 1.8 after an ozone treatment at a dose of 0.1 g O3/g chemical oxygen demand (COD), while the methane production rate was 2.2 times higher compared to the untreated sludge. Higher ozone doses, although still positive, were found to have a less pronounced effect. Limited ozone treatment appears compatible with subsequent digestion of biosolids and economically feasible.