| 硅藻精土对冬季生活污水处理的中试研究 |
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| 引用本文： | 傅婉蓉,郭燕,柏勇,郭嘉.硅藻精土对冬季生活污水处理的中试研究[J].环境科学与技术,2012(Z2):267-270. |
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| 作者姓名： | 傅婉蓉 郭燕 柏勇 郭嘉 |
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| 作者单位： | 江苏省嘉庆水务发展有限公司 |
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| 基金项目： | 江苏省太湖水环境综合治理第四期专项资金技术类科研课题(TH2011201) |
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| 摘 要： | 针对生活污水处理在冬季低温时处理效果下降的问题,设计处理能力为2 m3/h的改良型A2/O工艺中试装置,在冬季低温运行情况下投加硅藻精土,从污泥沉降性能、MLVSS/MLSS比值、消泡情况和出水水质4个方面,阐述硅藻精土对运行效果的影响。结果表明,投加硅藻精土后污泥沉降性能改善、跑泥现象消失,前5 min沉降速度由67 mL/min上升到93 mL/min,MLVSS/MLSSS比值由0.46提高到0.51,好氧区生物泡沫明显减少,出水水质显著改善。
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| 关 键 词： | 污水处理低温 硅藻精土 处理效果 |
Study of Modified Diatomaceous Earth Treating the Municipal Wastewater under Low Temperature |
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| FU Wan-rong,GUO Yan,BO Yong,GUO Jia.Study of Modified Diatomaceous Earth Treating the Municipal Wastewater under Low Temperature[J].Environmental Science and Technology,2012(Z2):267-270. |
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| Authors: | FU Wan-rong GUO Yan BO Yong GUO Jia |
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| Institution: | (Jiangsu Province Jiaqing Water Services Co.,Ltd,Nanjing 210002,China) |
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| Abstract: | The efficiency of sewage treatment will decline in winter,the quality of effluent water can't reach the standard.A medium-scale unit with 2 m3/h flow rate treating domestic wastewater installed was studied.Modified diatomaceous earth was introduced in this unit under low temperature in order to investigate the effect of modified diatomaceous earth on the volume of sediment sludge,MLVSS/MLSS ratio,control of bio-bubble,quality of effluent.The results indicated that modified diatomaceous earth enables to improve the biological treatment efficiency and sedimentation performance of sludge;increase the volume of sediment sludge from 67 mL/min to 93 mL/min for the first 5 mins and the MLVSS/MLSS ratio from 0.46 to 0.51.Additionally,the paper reported that bio-bubble on the surface of aerated zone was decreased obviously and quality of effluent meeting the requirement for discharge was achieved by using modified diatomaceous earth. |
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| Keywords: | the efficiency of domestic sewage treatment in the wintertime modified diatomaceous earth treatment effect |
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