运用序列式生物膜反应器处理味精污水工艺研究

Technology of monosodium glutamate wastewater treatment by sequencing biofilm batch reactor

味精污水中含有较高的氨氮离子,序列式生物膜反应器(SBBR)能够有效实现味精污水的同步硝化与反硝化反应,减少设备占有面积和节约处理时间。经过实验得出,当溶氧(DO)为3~4mg/L能够有效地满足生物膜中好氧菌的生长需要,又不会破坏生物膜内的厌氧环境,当pH值为8.0时,温度为30℃时,对味精生产中产生的污水的化学需氧量(COD)去除率高达95.34%,氨氮的去除率达到95.78%,生物需氧量(BOD5)去除率94.1%。

Monosodium glutamate （MSG） wastewater contains high ammonia nitrogen ions. Sequencing batch biofilm reactor can effectively realize the simultaneous nitrification and denitrification in monosodium glutamate wastewater treatment, resulting in the occupied area reduced and process- ing time saved. The result showed that it can me^t the need of aerobic bacteria in the biofilm and cannot destroy biofilm in anaerobic environment when the dissolved oxygen （DO） was 3-4mg/L. When the pH value was 8 and the temperature was 30%, the chemical oxygen demand removal of the wastewater produced in MSG production was up to 95.34%, ammonia nitrogen was 95.78%, and BOD5 was 94.1%.