期刊文献+

工业氧化锌炼锌废水的处理工艺 被引量:2

Treatment Technology of Wastewater of Zinc Smelting from Industrial Zinc Oxide
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摘要 探讨混凝沉淀联合好氧SBR反应器对工业氧化锌炼锌废水的处理效果,分析絮凝剂投加量、配比及pH、温度、污泥质量浓度、水力停留时间和容积负荷对结果的影响,得出混凝阶段阴离子聚丙烯酰胺(APAM)与聚合氯化铝(PAC)的质量比为4∶3,混合絮凝剂质量浓度12mg·L-1,pH 8~9,温度20~35℃;好氧SBR反应器处理阶段污泥质量浓度3 800mg·L-1,水力停留时间10h,容积负荷2.0kg·m-3·d-1为最佳处理工艺。按照最佳工艺处理,效果良好。 In order to get an accurate model,discuss how to choose proper parameters which used in semivariogram modeling and analyze the influence of anisotropy in Kriging interpolation and the spatial variation of isotropy at various lag interval,the spatial variation of soil total nitrogen was studied in small scale cotton field with drip irrigation in north Xinjiang based on GIS(Geographic Information System) and geostatistics.The results showed that the C V is 0.213,which means spatial variability is feeblish.The spatial variability of total N was apparent anisotropy in NW27° within the maximum lag extent of 500 m,but was isotropy with the lag extent of 300 m.There were little varies of C0/(C+ C0) in different lag intervals,which indicated a weak autocorrelation.This was because of the characteristics of small scale and the application of drip irrigation which decreased the structural factor and increased the randomness.
出处 《西北农业学报》 CAS CSCD 北大核心 2013年第6期197-202,共6页 Acta Agriculturae Boreali-occidentalis Sinica
基金 科技部"863"子项目(2012AA101404-4)
关键词 炼锌废水 重金属 混凝沉淀 好氧SBR反应器 Wastewater of zinc smelting Heavy metals Coagulating sedimentation Aerobic sequencing batch reactor activated sludge process
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