粉煤灰-污泥陶粒废料农用可行性研究

发布时间：2018-02-03 19:51

本文关键词： 粉煤灰污泥陶粒废料资源化小白菜　出处：《环境科学与技术》2016年12期 　论文类型：期刊论文

【摘要】：为了研究自制免烧粉煤灰陶粒(比表面积17.038 m2/g)处理完生活污水后农用的可行性,设计了其作为栽培基质种植小白菜的试验,研究废料的施用量对小白菜生长、发芽和产量的影响。先对陶粒废料进行Cr、Cd、Hg、As和Pb的重金属和TN、TP、TK和有机质等养分进行检测,结果表明,各项指标均符合《城镇垃圾农用标准》(GB 8172-87),可以进行资源化利用。然后将其按照0%、10%、20%、30%、40%、50%6种质量分数同土壤均匀混合后栽培小白菜。结果显示,陶粒废料施用量为20%时,能有效提高小白菜抗虫害、抗倒伏的能力且增产效果最好,为59.69%。但随着施用量的增加,栽培基质抗旱保湿能力下降,反而会抑制种子发芽和幼苗生长。
[Abstract]:In order to study the feasibility of self-made unburned fly ash ceramsite (specific surface area 17.038 m2 / g) after treatment of domestic sewage for agriculture, the experiment was designed to grow pakchoi as a culture substrate. The effects of waste application on growth, germination and yield of pakchoi were studied. TK, organic matter and other nutrients were detected. The results showed that all the indexes were in line with the "Agricultural Standard of Municipal solid waste" (GB8172-87), which could be used for resource utilization, and then according to 0%. The results showed that when the amount of ceramic waste was 20, the resistance of pakchoi could be improved effectively. The ability to resist lodging and increase yield was the best (59.69), but with the increase of application amount, the drought resistance and moisture retention ability of cultivation substrate decreased, but the seed germination and seedling growth were inhibited.
【作者单位】：武汉大学土木建筑工程学院;
【基金】：国家科技支撑计划项目(2012BAJ21B06)
【分类号】：X703;X705
【正文快照】： 经济的发展和人口的增长,使得生活污水的排放量年复一年呈现出递增趋势[1]。生物滤池[2]、人工湿地等高效生物膜法污水处理工艺的应用同时得到推广,这些工艺中装填提供微生物膜生长的高比表面积颗粒滤料[3],处理污水后的陶粒废料量也急剧增长[4],陶粒废料再利用问题应该得到足

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