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2021-05-12
生物滤池的影响因素
生物滤池除臭目前受到广泛应用,那么,生物滤池的影响因素具体有哪些,接下来,我将具体介绍一下。
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生物滤池的影响因素
Date﹕2021-05-12|Source:Eclear Environmental

生物滤池除臭目前受到广泛应用,那么,生物滤池的影响因素具体有哪些,接下来,我将具体介绍一下。

生物滤池的影响因素

滤料

滤料是生物滤池的核心,理想的滤料应具有以下特点:①丰富多样的微生物种群;②可为生物膜及气体质量扩散提供较大的比表面积;③较高的孔隙度以满足气体的均质扩散;④持水性好;⑤具有供微生物生长的充足营养物质;⑥具有pH值缓冲能力;⑦具有较强的机械抗压力和较低的容重,以保证较好的水动力特征及防止压实;⑧廉价、易获取等。

常用的可降解滤料有堆肥、园林废弃物(木块、树枝、树叶等)、花生壳、甘蔗渣、椰子纤维、泥炭等;常用的不可降解滤料有玻璃珠、石棉、陶瓷、火山岩、火山灰、聚亚胺酯、聚苯乙烯、蛭石硅酸盐、珍珠岩、粒状活性炭、粒状橡胶、木炭、硅藻土等。与不可降解滤料相比,可降解滤料中含有丰富的微生物种群及供其代谢的营养物质,但是,随着时间的推移,有机质不断被降解,从而会出现孔隙度减小、压实、压降增大等问题。在长期运行的生物滤池中,可降解滤料的压降为不可降解滤料的622倍。虽然不可降解滤料较为稳定且不易压实,压降较小,但是需要接种微生物并不断提供营养物质,因此增加了运行成本及操作难度。近年来,有学者提出了复合滤料,一方面解决了微生物及营养物质供应问题,另一方面降低了滤池的压降。

水率

滤料含水率是影响生物滤池运行的一个重要参数。生物滤料的最佳含水率与其孔隙度、温度、目标气体及其浓度等因素有关。对于大多数气体,生物滤料的最佳含水率为40%~65%。滤料过于干燥时会产生裂隙,导致气体分布不匀、微生物新陈代谢紊乱等问题;在一定范围内,对气体的去除率随着滤料含水率的增大而增大,这与高含水率能增强滤料的吸附/吸收作用、促进微生物的新陈代谢有关;但是,滤料含水率过高时,滤池内易产生厌氧区域,增加压降及传质阻力,不但会降低对臭气的去除率,而且会释放臭气。

生物滤池的影响因素

上海羿清环保是一家专注于生物滤池设备生产和方案设计的环保企业,其生产的生物滤池臭气处理设备能够有效处理臭气,而且不会产生二次污染,受到业内人士的一致赞誉。

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