Studies On Biological Uptake And Its Affecting Factors

Storage and uptake of resolvable organic matter by germs and its effecting factors are studied by experiment, in which SBR is employed and two kinds of substrate used are glucose and acetic acid. The results show that:1. When substrate is glucose, the maximal quantity of biological uptake is 54. 62 mg glucose/g MLSS; when substrate is acetic acid, it is 205. 66mg HAc/g MLSS;2. F/M adopted in the test is 1. 0 and 2. 8 kg.COD/m .d, when substrate is glucose, the maximal quantity of biological uptake is 54.19, 54. 62 mg glucose/g MLSS respectively; when substrate is acetic acid, it is 175. 68, 205. 66mg HAc/g MLSS;3. When DO is 2. 5mg/l, the average quantity of biological uptake for glucose and acetic acid is 45. 90 mg glucose/g MLSS, 171. 77 mg HAc/g MLSS respectively; when DO less than 0.4 mg/l,it is 37.19 mg. glucose/g. MLSS, 147. 46 mg. HAc/g. MLSS respectively;4. Biological uptake phenomenon is discripted indirectly by measuring variety of content of protein in germ, concentration of ammonia nitrogen and phosphor. The quantitative relation of biological uptake, growth and degradation described by analyzing laboratorialdatum is: CODSTO :CODgowth: CODdegradation=93: 6: 4.