垃圾渗滤液颗粒污泥驯化试验及主要微生物种群变化

Experiment of Particle Sludge Acclimation of Landfill Leachate and Changes of the Main Microorganism Species

垃圾渗滤液生化处理过程中，采用城市污水处理厂污泥浓缩池污泥进行接种，并选择间歇培养同驯化的启动方法，分阶段提高废水配比。试验结果表明，经过16d的污泥驯化，MLSS保持在5000mg／L左右，HRT=3d，SV=36，F／M为0．144kgBOD5／kgMLVSS．d，容积负荷（Fv）为1．3～1．6kgCOD／m^3.d，温度28～300C，pH=7，DO为3～5mg／L条件下，该渗滤液CODCr降至450．05mg／L，去除率保持80％左右，NH3-N的去除率最终达96．15％。随着驯化时间的延长，通过显微观察，活性污泥絮状性能变好，絮体增大，边缘清晰，结构紧密，反应器内原生动物种类丰富，与其他微生物相互协同，可提高处理效率。

The sludge from municipal sewage treatment plant concentration pond was inoculated by choosing the start - up method of intermission culture domestication and increasing the sewage proportion by stages in the course of landfill leachate biochemical treatment. The results showed that under the situation of 5000mg/L of MLSS and 3d of HRT and 0. 144kgBOD5/kgMLVSS, d of F/M and 1. 3 to 1. 6 kgCOD/m^3 of FV and 7 of pH and 28 to 30℃ of the reaction temperature and 3 to 5mg/L of DO after 16 days of sludge domestication, the removal rate of COD and ammonia nitrogen approached 80 percent and 96 percent respectively, the concentration of COD remains about 450mg/L. With the acclimation time extended, the activated sludge brim was clear. The protozoa in bioreactor were abundant, which could grow well with other microorganisms to promote disposal efficiency.