Results 71 to 80 of about 58,569 (298)

Macroinvertebrate community responses to a dewatering disturbance gradient in a restored stream [PDF]

Hydrology and Earth System Sciences, 2011
Dewatering disturbances are common in aquatic systems and represent a relatively untapped field of disturbance ecology, yet studying dewatering events along gradients in non-dichotomous (i.e. wet/dry) terms is often difficult.
J. D. Muehlbauer, M. W. Doyle, E. S. Bernhardt   +2 more
doaj   +1 more source

Biochar from Pyrolysis of Biosolids for Nutrient Adsorption and Turfgrass Cultivation [PDF]

, 2015
At water resource recovery facilities, nutrient removal is often required and energy recovery is an ever-increasing goal. Pyrolysis may be a sustainable process for handling wastewater biosolids because energy can be recovered in the py-gas and py-oil ...
American Public Health Association (APHA), Kalyak Y., Kasakura T., Liu T., Ma H., McNamara P., Metcalf & Eddy, Rambabua N., Taghizaheh‐Toosi A., U.S. Environmental Protection Agency   +9 more
core   +2 more sources

Layered Radial Aquifer Model for Open‐Pit Mine Closure with Managed Aquifer Recharge

Groundwater, EarlyView.
A radially symmetric layered aquifer model (unconfined–aquitard–confined) coupled to a pit‐lake water balance is developed to screen managed aquifer recharge (MAR) after open‐pit mine closure. Dimensionless type curves quantify trade‐offs between pit recovery time, pumping/recycling, and unconfined mounding as functions of aquifer time scales, aquitard
Behzad Ataie Ashtiani
wiley   +1 more source

When Density Matters: Hydraulic and Salinity Evolution in Groundwater‐Fed Pit Lakes in Semiarid and Arid Climates

Groundwater, EarlyView.
Pit lakes in semiarid and arid regions are often assumed to be terminal sinks for groundwater following mine closure. Using synthetic numerical modeling, we demonstrate that evaporation‐driven density gradients can reverse this behavior, transforming pit lakes into throughflow systems and potentially increasing salinity in adjacent aquifers.
Birte Moser, Peter G. Cook, Janek Greskowiak, Ilka Wallis   +3 more
wiley   +1 more source

Prediction Method for Land Subsidence Induced by Foundation Pit Dewatering under Complex Conditions

Chengshi guidao jiaotong yanjiu
［Objective］To study the land subsidence variation patterns induced by foundation pit dewatering under complex conditions, the deep foundation pit project at Nanjing Metro Line 5 Airport Road Station is taken as a case study to predict the land subsidence
DUAN Qiguang
doaj   +1 more source

Demonstration of a High‐Resolution Passive Profiler for Characterizing the Distribution of PFAS in Groundwater: A Comparison of Methods in the Field

Groundwater Monitoring &Remediation, EarlyView.
Abstract Characterizing the concentration and mass flux spatial distributions at sites with complex hydrogeologic conditions is critical to evaluate the fate and transport of contaminants, as well as to design effective remediation programs. PFAS (per‐ and polyfluoroalkyl substances)‐contaminated sites are even more complex due to the large number of ...
Morgan Eldridge, Jessica LaFond, Micaela Vavra, Graig Lavorgna, David Lippincott, Paul Hatzinger, Jennifer Guelfo, Todd Anderson, W. Andrew Jackson   +8 more
wiley   +1 more source

Method for Studying Water Removal and Air Penetration during Through Air Drying of Tissue in Laboratory Scale

BioResources, 2023
Energy use, together with consumption of raw materials, machine clothing, and wet end chemicals, are some of the most critical aspects in successful tissue making today. This work was aimed at developing a laboratory-scale method of estimating dewatering
Björn Sjöstrand, Mikael Danielsson, Magnus Lestelius   +2 more
doaj   +2 more sources

Variations of porosity in calcareous sediments from the Ontong Java Plateau [PDF]

, 1993
Based on index properties measurements made on board the JOIDES Resolution, we studied porosity changes with depth in the fairly homogeneous deep-sea calcareous sediments cored during Ocean Drilling Program Leg 130 on the Ontong Java Plateau.
Bassinot, Frank, Marsters, Janice C., Mayer, Larry A., Wilkens, Roy H.   +3 more
core   +4 more sources

Points vs. passes: A comparison between electric fishing techniques for sampling fish populations in upland headwater streams

Journal of Fish Biology, EarlyView.
Abstract Point‐abundance sampling by electric fishing (PASE) was compared with single‐pass (DF1) and triple‐pass depletion sampling (DF3) electric fishing on the same reaches of four headwater streams sampled over multiple years in the Ribble catchment, UK. Juvenile salmonids, mostly brown trout Salmo trutta with some Atlantic salmon S.
Reagan H. Pearce, Martin R. Perrow, Mark L. Tomlinson, Kirsty A. Turner   +3 more
wiley   +1 more source

Research advance and application exploration of sludge dewatering flocculants

Gongye shui chuli
Activated sludge process is one of the most widely used processes for wastewater biological treatment. As the main by-product of activated sludge process，sludge with the high moisture content easily results in various problems such as the difficult ...
ZHANG Jie, LAI Yue, YANG Chaohui, LIN Hao, ZHOU Shungui, YE Jie, LIU Changgeng   +6 more
doaj   +1 more source