CAJ | 학술논문

以北京市某再生水厂出水为研究对象,人工配制各浓度梯度的营养盐,试验研究补给再生水后景观水体水质指标的变化,重点考察磷对叶绿素a和藻密度的影响情况.试验结果表明叶绿素a和藻密度主要受水体中氮磷比和磷酸盐浓度的影响.在磷酸盐保持在1 mg/L以下,氨氮在2 mg/L以下,硝酸盐氮在8 mg/L以下,将再生水一次性补给景观水体是完全可行的,不会产生藻类暴发;当磷酸盐浓度增加至1.5 mg/L,藻密度将显著增加.
이북경시모재생수엄출수위연구대상,인공배제각농도제도적영양염,시험연구보급재생수후경관수체수질지표적변화,중점고찰린대협록소a화조밀도적영향정황.시험결과표명협록소a화조밀도주요수수체중담린비화린산염농도적영향.재린산염보지재1 mg/L이하,안담재2 mg/L이하,초산염담재8 mg/L이하,장재생수일차성보급경관수체시완전가행적,불회산생조류폭발;당린산염농도증가지1.5 mg/L,조밀도장현저증가.
In this study the effluence of a Beijing reclaimed water plant was chosen to investigate the variations in quality indicators of landscape after the supplies of renewable water, especially focused on effects of nitrogen nutrients (ammonia nitrogen, nitrate nitrogen) on the chlorophyll a and algal density. The experimental results showed that the concentration of chlorophyll a and algal density were mainly influenced by concentration of phosphate and N/P ratio in water. With phosphate concentrations below 1 mg/L, the ammonia concentration below 2 mg/L, and the concentration of nitrate nitrogen below 8 mg/L, supplying landscape water with the reclaimed water is feasible and does not cause serious algal outbreak. But the algal density would increase drastically with the increasing of phosphate concentration to 1.5 mg/L.