MITCHELL R, NEVO Z
Appl Microbiol. 1964 May;12(3):219-23. doi: 10.1128/am.12.3.219-223.1964.
A study was carried out of the mechanisms of biological clogging of sand during prolonged percolation of water containing high levels of organic matter. It was found that polysaccharide-producing microorganisms predominated in clogged layers of sand. A positive correlation was observed between accumulation in the profile of polysaccharides and clogging of columns of sand in permeameters. The level of oxygen in the system appears to determine the equilibrium between production of clogging materials and their decomposition.
对含有高浓度有机物的水长期渗滤过程中沙子生物堵塞的机制进行了一项研究。研究发现,在堵塞的沙层中,产生多糖的微生物占主导地位。在多糖在剖面上的积累与渗透仪中沙柱的堵塞之间观察到正相关。系统中的氧气水平似乎决定了堵塞物质的产生与其分解之间的平衡。