| 水厂排泥水沉淀预处理回用试验研究 |
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| 作者姓名： | 范爱丽 李笑梅 张金松 刘茜 许青 |
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| 作者单位： | [1]深圳市水务（集团）有限公司,广东深圳518031 [2]哈尔滨工业大学深圳研究生院,广东深圳518000 [3]广州大学,广东广州510006 |
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| 基金项目： | 国家科技支撑计划重点项目 |
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| 摘 要： | 对水厂沉淀池排泥水进行了自然沉淀、混凝沉淀试验研究,结果表明:排泥水经过0.5 h自然沉淀后,上清液水质趋于稳定,浊度、CODMn、氨氮、细菌、藻密度、浮游动物死体和活体均得到不同程度的去除。继续延长沉淀时间对上清液水质的改善效果不明显,个别生物类指标反而有上升趋势。投加混凝剂可以进一步提高回用水水质,阳离子PAM投加量为0.8 mg/L时,排泥水浊度从2 219 NTU下降至1.59～3.84 NTU。
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| 关 键 词： | 排泥水 自然沉淀 混凝沉淀 回用 安全 |
Reuse of sedimentation pretreatment of sludge water in waterworks |
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| Authors: | Fan Aili Li Xiaomei Zhang Jinsong Liu Qian Xu Qing |
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| Affiliation: | 1.Shenzhen Water(Group) Co.,Ltd.,Shenzhen 518031,China;2.Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518000,China;3.Guanzhou University,Guangzhou 510006,China) |
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| Abstract: | The test was conducted for the sludge water of the sedimentation tank by plain and coagulation sedimentation.The result showed that the supernatant quality was stable after 0.5 h sedimentation,turbidity,CODMn,ammonia nitrogen,total bacteria,amount of algae,dead and living plankton were removed by various degree.Extension of sedimentation time could not improve supernatant quality obviously,and some biological indicators had a rising tendency.Coagulant dosing could further improve the quality of reused water,and the turbidity of sludge water could be reduced from 2 219 NTU to 1.59 to 3.84 NTU when cationic PAM was dosed at 0.8 mg/L. |
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| Keywords: | sludge water plain sedimentation coagulation sedimentation reuse safety |
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