硅藻处理水玻璃旧砂湿法再生污水的影响因素及效果.pdfVIP

学兔兔 Apr．2012 VO1．61 NO．4 硅藻处理水玻璃旧砂湿法再生污水的 影响因素及效果 余少强，樊自田，汪华方 (华中科技大学材料成形与模具技术国家重点实验室，湖北武汉430074) 摘要：研究了不同影响因子对硅藻处理水玻璃旧砂湿法再生的强碱性污水的影响及其效果，影响因素包括：光照强 度、光照时间、氮浓度、磷浓度、氮磷比、Fe*浓度等。结果表明：硅藻生长速度越快、生物量越大，污水处理效果越 好。处理7天后，硅藻最多能吸收碱性污水中约44．1％的Na+和48．1％的Si03~+。 关键词：水玻璃旧砂；湿法再生污水；硅藻；生物处理 中图分类号：TG221 文献标识码：A 文章编号：1001—4977(2012)04—0412—06 Influence Factors of Waste Water frOm the Wet Reclaiming Sodium Silicate Used Sand Treated by Diatom and Its Effects YU Shao-qiang，FAN Zi-tian，WANG Hua—fang (State Key Laboratory ofMaterials Processing and DieMould Technology，Huazhong University of Science and Technology，Wuhan 430074，Hubei，China) Abstract： The effects of different environmental and nutritional factors on waste water from the wet reclaiming sodium silicate used sand treated by diatom and its effects were researched in this Paper．The factors include intensity and time of illumination．concentration of nitrogen and phosphorous． nitrogen．phosphorus ratio and ferric ion concentration．The results indicate that there is a good treatment effect when the diatom has a higher growing speed and biomass．About 44．1％ sodium ion and 48．1％silicate ion were removed from the waste water after seven days’treatment． Key words：sodium silicate used sand；waste water from the wet reclaiming；diatom；bio．仃eatment 绿色清洁生产是2 1世纪铸造工业发展的趋势，水玻 本文研究了光照强度、光照时间、氮浓度、磷浓度、 璃砂被认为是最有可能实现绿色铸造的型砂【1】。而水玻 氮磷比、Fe +{农度等因素对硅藻在水玻璃旧砂湿法再生 璃砂存在旧砂再生回用难的问题，相