摘要
通过室内模拟实验,分析了环境因子(上覆水、微生物活动、温度、pH、水动力条件)对鱼饵磷释放特征的影响及原因。结果表明:鱼饵在去离子水中总磷和正磷酸盐的平衡释放量约是潘家口水库水中的1.58倍和1.76倍;微生物作用有利于鱼饵中磷向水体释放,前者总磷和正磷酸盐的释放量约为后者的1.55倍和1.28倍;温度升高和水体扰动促进了鱼饵中磷的释放;酸性和碱性条件下鱼饵中磷的释放量高于中性条件下鱼饵中磷的释放量。各环境因子作用下,鱼饵中磷在前3h内的释放速率最大。
Effects of environmental factors,such as overlying water types,microorganism activities,temperature,pH and hydrodynamic conditions upon release of phosphorus in fish bait were experimentally investigated.The results showed that： the contents of total phosphorus and orthophosphate released from bait in deionized water were about 1.58 and 1.76 times respectively equal to those in water of Panjiakou Reservoir.The action of microorganism was in favor of releasing phosphorus in fish bait,and the contents of total phosphorus and orthophosphate with microorganism were about 1.55 and 1.28 times respectively equal to those without microorganism.Also higher temperature and disturbance were helpful to the phosphorus release.The fish bait released more phosphorus under alkaline or acidic conditions compared to the neutral condition.Under various environmental factors,the maximum rate of phosphorus release was achieved at the beginning 3 hours.
出处
《水资源与水工程学报》
2011年第2期10-14,共5页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金资助(51079068)
天津市科技支撑计划重点项目(09ZCGYSF00400)
国家水体污染控制与治理重大专项(2008ZX07314-005-011和2009ZX07209-001)
水利部公益性行业科研专项子课题"蓝藻生长动力学模型研究"(200801135)
中国水利水电科学研究院开放基金资助
关键词
鱼饵
磷释放
环境因子
水体富营养化
水污染
潘家口水库
fish bait
phosphorus release
environmental factors
eutrophication of water
water pollution
Panjiakou reservoir
