二级SBR法处理高浓度氨氮化工废水研究

用直接活性污泥法完成了各反应器的污泥驯化启动。二级ＳＢＲ工艺主要由硝化ＳＢＲ和反硝化ＳＢＲ反应器构成，其中硝化ＳＢＲ反应器采用悬浮生长法和固定生物膜法两种工艺作对比试验。结果表明，后者较前者具有更大的ＮＨ３－Ｎ容积负荷，最大可达７６６．５４ｍｇＬ＾－１ｄ＾－１；而且能节省碱的消耗量１１．０％～３８．７％和反硝化所需碳源量为３０％～４０％。在ｔＨＲ为２４ｈ的条件下，二级ＳＢＲ法能处理ρＩｎ（ＮＨ３－

TREATMENT OF CHEMICAL INDUSTRIAL WASTEWATER CONTAINING HIGH NH3-N BY A TWO-STAGE SBR PROCESS

The treatment of chemical industrial wastewater containing high concentration of NH3-N was studied with a two-stage SBR process. The reactors were started by the direct activated sludge. The two-stage SBR process is composed of nitrification SBR and denitrification SBR reactors, and suspended sludge and fixed biofilm were used in nitrification SBR system for comparison. The result suggested that the later had a higher NH3-N volume loading of 766.54 mg L-1 d-1 and the consumption of alkali and carbon resource was 11.0%～38.7% and 30%～40% less than that of the former. Under the operating condition of tHR 24 h, the two-stage SBR process could treat the chemical industrial wastewater containing high concentration of NH3-N of 600～760 mg.L-1, and the removal rate of NH3-N,TN was more than 98.5% and 98%. Fig 2, Tab 7, Ref 7