机构地区: 湖南大学土木工程学院
出 处: 《湖南大学学报(自然科学版)》 2004年第2期32-35,共4页
摘 要: 通过试验 ,研究了洞庭湖区地下水生物除锰滤池的成熟过程与除锰效果 ,探讨了 pH值、氧化还原电位 (ORP)以及亚铁离子 (Fe2 + )与生物除锰的关系。结果表明 ,石英砂滤池除锰能力与砂层细菌含量密切相关 ;在试验进水水质条件下 ,通过自然培养 ,石英砂生物除锰滤池可在 6 0天内培养成熟 ;在 12m/h的较高滤速下 ,生物滤池仍有良好的除锰、除浊效果和很长的过滤周期 ;当出水 pH为 5~ 8.5时 ,出水含锰量小于 0 .1mg/L ,但当pH <5时 ,出水含锰量随进水 pH值的降低而急剧增加 ;当ORP为 4 30~ 72 0mV时 ,生物滤池具有良好的除锰效果 ;Fe2 + 与生物滤池除锰能力密切相关 . Through experiments, we studied the biological sand filter ripening process and the manganese removal of the Dongting lake groundwater, and investigated the relations among the pH value, oxidation-reduction potential (ORP), ferrous ions and biological manganese removal. The manganese removal ability of the sand-filter was closely related to the bacterial content of the filter layer. Under the influent quality conditions, the biological sand-filter was ripened in 60 days with the natural culture of bacteria. At the higher filter-velocity of 12 m/h, the effluent manganese content < 0.1 mg/L. When the pH value < 5, the effluent manganese content grew rapidly with the decrease of pH value. When the ORP < 720 mV, the bio-filter had a good manganese removal. The ferrous ions were closely related to the manganese removal ability of the bio-filter.
关 键 词: 地下水 生物降解 生物滤池 除锰效果 影响因素
领 域: [建筑科学]