简报
吴启堂,蒋成爱,林毅,劳伟雄.利用剩余活性污泥的生物吸附降低城市污水污泥重金属含量[J].环境科学学报,2000,20(5):651-653
利用剩余活性污泥的生物吸附降低城市污水污泥重金属含量
- Application of biosorption of heavy metals by surplus activated sludge in reducing sewage sludge metal concentration
- 基金项目：广州市建委科技发展基金(9702);美国RockefellerBrothers基金资助
- 作者
- 单位
- 吴启堂
- 华南农业大学资源环境学院, 广州 510642
- 蒋成爱
- 华南农业大学资源环境学院, 广州 510642
- 林毅
- 广州市城市排水监测站, 广州 510160
- 劳伟雄
- 香港理工大学应用生物与化学科技系, 九龙, 香港
- 摘要：对香港沙田和广州大坦沙污水处理厂的污水、污泥作了初步的生物吸附试验.结果表明, 少量活性污泥能够显著降低污水中Cu、Zn、Ni的浓度, 污泥浓度为0.06g/L时, 广州污水上述3种重金属的去除率分别为82%、69%和51%.因此回流活性污泥到一沉池可有效降低上述金属进入生物反应池.
- Abstract：One of the strategies for reducing sewage sludge metal concentrations may be the returning the surplus activated sludge to the primary clarifier of the secondary treatment plant.The primary investigations with batch experiments were carried out with the waste water and activated sludge collected from Shatin sewage treatment plant of Hong Kong and Datansha sewage treatment plant of Guangzhou.Results showed that the activated sludge significantly reduced Cu, Zn and Ni contents in waste waters, even at low solid concentration, for example, be the addition of 0 06g/L activated sludge Cu, Zn and Ni can be removed 82%, 69% and 52% respectively in the case of Guangzhou wastewater.It indicats that the returning surplus activated sludge to the primary clarifier can be used to limit the above mentioned metals entering the reaction tank.
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