Effects of septic tank effluent on chemical quality of alluvial gravel aquifers
Effects of septic tank effluent on chemical quality of alluvial gravel aquifers
复制标题
化粪池出水对冲积砾石含水层化学质量的影响
DOI：
10.1080/00288330.1989.9516364
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发表时间：
1989
影响因子：
1.6
通讯作者：
M. Close
中科院分区：
文献类型：
--
作者：
M. Close
摘要 在新西兰坎特伯雷平原的两个处置系统附近，对化粪池流出物对地下水质量的影响进行了为期 18 个月的监测：无承压含水层中的 5.5 m 深的巨石坑和承压含水层中的 18 m 深的注入井。巨石坑底部米的部分密封产生了两种流动机制：通过高渗透性通道的快速流动导致附近一些井中化学浓度的显着昼夜波动，以及通过“密封”层的较慢渗透。一些监测井中各种化学成分的浓度有所增加。随着穿过巨石坑和地下水层的距离的增加，铵、总凯氏氮、磷、生化需氧量和亚甲蓝活性物质的分散调整浓度迅速下降。由于铵的转化，硝酸盐的含量有所增加，钠、钾和荧光增白剂（FWA）的含量略有下降。 ...
Abstract The effects of septic tank effluent on groundwater quality were monitored for 18 months near 2 disposal systems: a 5.5 m deep boulder pit in an unconfined aquifer, and an 18 m deep injection well in a confined aquifer, both in the Canterbury Plains, New Zealand. Partial sealing of the bottom metre of the boulder pit gave rise to 2 flow mechanisms: rapid flow through highly permeable pathways which resulted in marked diurnal fluctuations of chemical concentrations in some of the nearby wells, and slower seepage through the “sealed” layer. Concentrations of various chemical constituents increased in some of the monitoring wells. Dispersion‐adjusted concentrations of ammonium, total Kjeldahl nitrogen, phosphorus, biochemical oxygen demand and methylene‐blue active substances decreased rapidly with distance through the boulder pit and groundwater strata. Levels of nitrate increased because of transformation of ammonium, and sodium, potassium and fluorescent whitening agents (FWA) decreased slightly. ...