| 厌氧颗粒污泥对五氯苯酚的吸附、解吸和生物降解研究 |
| 摘要点击 1398 全文点击 1432 投稿时间：1995-06-10 |
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| 中文关键词 五氯苯酚 生物降解 生物吸附 解吸 挥发 厌氧 颗粒污泥 |
| 英文关键词 pentachloropenol biosorption de-sorption biodegradation anaerobic |
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| 中文摘要 |
| 在以氯苯酚驯化污泥接种的上流式厌氧反应器中可形成降解PCP的厌氧颗粒污泥。在HRT20-22h、PCP负荷率200-220mg/(L·d)时,该反应器可有效地处理合PCP170-180mg/L的废水,PCP去除率大于99.5%.PCP在厌氧颗粒污泥上的吸附和解吸均符合Freundlich等温方程,吸附是部分不可逆的,该方程可较好地描述厌氧反应器内颗粒污泥对PCP的吸附量的变化规律。试验表明厌氧颗粒污泥去除PCP的主要机制是生物降解,而非吸附和挥发作用。 |
| 英文摘要 |
| PCP degrading anaerobic sludge granules may be developed in upflow anaerobic digestion reactors(UAD) seeded with sludges acclimated to chlorophenols,the reactors are able to remove more than 99.5% of PCP in a synthetic wastewater at the concentration of 170 to 180 mg/L,volumetric loading rate up to 200 to 220 mg/(L·d),and hydraulic retention time of 20 to 22 hours.Biosorption and desorption isotherms of pentachlorophenol were determined,and the data were fitted to Freundlich equation.However,it was found that the biosorption of PCP was partly irreversible,and the Freundlich models with empirical constants determined from this study can quite well describe the partition behavior of pentachlorophenol in anaerobic upflow digestion reactor.It was demonstrated that PCP removal by granular sludge in UAD reactors was due to biodegradation rather than adsorption and volatilization. |
