Groundwater infiltration into sanitary sewers increases hydraulic loadings of sewage collection systems and threatens wastewater treatment efficiency. However, cost-effective approach to quantify this important
et al. Pin-pointing groundwater infiltration into urban sewers using chemical tracer in conjunction with physically based optimization model [J]. Water Research, 2020, 175: 115689. Article Google Scholar Kobayashi J., Kuroda K., Miyamoto C. et al. Evaluating sewer exfiltration in groundwater ...
•In some new build areasgroundwaterinfiltration toexistingsewersis as high as 20 times thedryweatherflows.•But last month the issuance ofgroundwaterdischargepermitswasfrozenin this state.•To take them offgroundwatermay wellmeanwe have tosubsidizethem some more.•Anenormousamount ofdetailed...
Floods cause significant damages not only on, but also beneath the earth’s surface. Infiltration of surface water into deeper soil, flooding of the urban sewer system and, in consequence, rising groundwater levels are main causes of subsurface damages.
3.1. Bacterial abundance in groundwater did not increase due to TWW irrigation To evaluate whether groundwater (GW) is polluted through infiltration of TWW associated bacteria during TWW irrigation events, both, the irrigation water and the GW were analyzed with qPCR and 16S sequencing. The TWW ...
热门 还没人写过短评呢 << 首页 < 前页 后页> > Ground Water Infiltration and Internal Sealing of Sanitary Sewers 作者: Barnes, Christopher A.; U. S. Environmental Protection Agency; 页数: 78 isbn: 1243709685 书名: Ground Water Infiltration and Internal Sealing of Sanitary Sewers©...
Infiltration is most frequently observed at sewer joints. Results are presented of laboratory tests which show the ability of flexible fixed-ring joints on clay sewers to withstand both internal and external pressures. Damaged polyester fairings on the spigots of these pipes can act as one-way ...
Groundwater infiltration into urban sewers represents a problem that influences costs and management of technical systems. The hydrodynamic groundwater software MODFLOW is used to analyse the influencing variables of the infiltration processes. Besides the hydraulic conductivity of the soil and the ...
The model indicates that after 50 years of wastewater infiltration, exchange of NH4+ has become limited due to the limited cation exchange capacity (CEC) of the soil. Therefore more NH4+ will be oxidised to NO3− and [NO3−] in groundwater will rise. At the same time, groundwater in...
including maintaining healthy urban river flows; supporting groundwater-dependent ecosystems and habitats; attenuating some pollutants; mitigating the impacts of extreme rainfall events, welcoming the infiltration water through sustainable drainage systems; providing water for urban tree roots (Dochartaigh et...