碳源在连续批式反应器中对生物养分移动的影响

连续批式操作用来研究利用不同的碳源从合成废水中移动养分(COD、 NH4-N、 NO3-N、 PO4-P)的过程,本操作包括缺氧症、缺氧的、有氧的、缺氧和有氧的(An、Ax、Ox、Ax、Ox)时期,分别持续2 h、1 h、4.5 h、1.5 h、1.5 h.葡萄糖、醋酸盐、葡萄糖和醋酸盐混合物作为碳源在机械中产生的COD∶N∶P为100∶5∶1.5,污泥稳定保存10 d.当葡萄糖和醋酸盐混合物比例是50∶50时,COD、NH4-N、NO3-N和PO4-P最大迁移率分别是96%、87%、81%和90%.

Influence of Carbon Source on Biological Nutrient Removal in a Sequencing Batch Reactor

Sequencing batch operation was used for nutrient (COD, NH4-N, NO3-N, PO4-P) removal from synthetic wastewater by using different carbon sources. Operation consisted of anaerobic, anoxic, oxic, anoxic and oxic (An、Ax、Ox、Ax、Ox) phases with durations of 2 h、1 h、4.5 h、1.5 h、1.5 h. Glucose, acetate and a mixture of glucose/acetate were used as carbon source to yield a COD∶N∶P ratio of 100∶5∶1.5 in the feed. Sludge age was kept constant at 10 days. COD, NH4-N, NO3-N and PO4-P maxium removal efficiencies was 96%, 87%, 81% and 90% respectively, when a mixture of glucose and acetate (50∶50) was used.