Ca^2＋在净水生物膜团聚体培养中的影响研究  

Effect of Ca^(2+) on cultivation of biomembrane aggregates of water treatment

作　　者：彭瑜[1] 杨朝晖[1] 曾光明[1] 孙珮石[2] 曹明[1] 徐峥勇[1] 孙红松[1] 

机构地区：[1]湖南大学环境科学与工程学院,长沙410082 [2]云南大学环境与湖泊研究院,昆明650091

出　　处：《环境工程学报》2009年第9期1615-1619,共5页Chinese Journal of Environmental Engineering

摘　　要：通过在5组相同型号的SBBR反应器(A、B、C、D和E)内调节进水中的Ca2+含量,研究Ca2+在净水生物膜团聚体培养过程的作用影响。结果表明,进水Ca2+投加浓度为25 mg/L时驯化培养的生物膜团聚体具有较好的抗挤压能力,抗压强度达到了22 N/cm2,密度为1.059 g/cm3,活性微生物的百分含量达到了86.90%,远远高于一般污泥团聚体中的微生物含量。分析运行效果,反应器C和D的生物膜团聚体通过29 d的驯化培养就达到了一个比较好的净水效果,并能维持稳定状态,相比于一般生物膜反应器的驯化时间有所缩短。不同进水负荷条件下氨氮的去除率变化表明,反应器C和D针对不同进水负荷表现出来的适应效果明显优于其他反应器。An effective way to cultivate efficient biomembrane aggregates was researched by regulating the Ca^2＋ concentration of the influent in the five SBBR reactors （A,B,C,D,E）. When the Ca^2＋ concentration of the influent was 25 rag/L, the biomembrane aggregates which were cultivated in the SBBR reactor D had the better anti-extrusion capacity. The average compressive strength of the biomembrane aggregates reached 22 N/cm^2 , the density was 1. 059 g/cm^3 , and the percentage content of the active microorganisms was 86.90%. The result indicated that after 29 days the biomembrane aggregates in the reactors C and D had better effect in wastewater treatment, and the domestication time of these reactors was shorter than that of general biofilm reactor. The test result of the removal rate of NH4^＋ -N with the different hydraulic load of the influent indicated that the effect of adaptation of the biomembrane aggregates in the SBBR reactors C and D were better than the others.

关 键 词：生物膜团聚体 钙离子 活性微生物 驯化时间 水力负荷 氨氮去除率 

分 类 号：X703[环境科学与工程—环境工程]