麦饭石SRB污泥固定颗粒的稳定性及生物活性实验

Research on Stability and Biological Activity of Immobilized SRB Sludge Particle with Modified Maifan Stone

针对我国煤矿酸性废水(ACMD)腐蚀性强、锰硫含量高的特点,基于微生物固定化技术,将改性麦饭石与硫酸盐还原菌污泥(SRB)有机结合,制成一种用于处理ACMD的改性麦饭石固定化SRB污泥颗粒。通过进行颗粒对酸碱盐溶液的稳定性试验及对比有无麦饭石颗粒膨胀率、OD600和SO42-的处理效果,探讨颗粒的结构稳定性及改性麦饭石对颗粒结构稳定、生物活性的影响,初步分析颗粒的适用性及可行性。结果表明,颗粒能满足对一般酸度较低ACMD的稳定性要求,有麦饭石颗粒的结构膨胀、基质外泄情况及SO42-去除效果优于无麦饭石颗粒,说明麦饭石对颗粒的结构稳定性、生物活性有一定的积极影响。

Aimed at the characteristics of acid coal mine drainage（ACMD） with strong corrosive, high content of sulfur and manganese in our country, based on microbial immobilization technology, an immobilized SRB sludge particle with modified maifan stone was made to deal with ACMD, which main component was the combination of modified maifan stone and sulfate reducing bacteria（SRB） activated sludge. Through the test on the stability of the particles＇ resistance to acid, alkali and salt solution, and the comparison to particles＇ inflation, OD600 and SO42- treatment effect with or without maifan stone, discussed the structural stability of the particles, and modified maifan stone＇s effect on the stability, biological activity of particles. That＇s all for a preliminary analysis the applicability and feasibility of the particles. The results showed that the particles can meet the requirements of the stability to the lower acidity ACMD, and structure expansion, ingredient leaked situation and SO42- removing effect of the particles with modified maifan stone was better than the particles without modified medical stone. So maifan stone has a positive impact on structure stability and biological activity of the particles.