Influence of extreme drawdown on water quality downstream of a large water storage reservoir

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
D. S. Baldwin ◽  
J. Wilson ◽  
H. Gigney ◽  
A. Boulding
Keyword(s):  
Water Quality ◽  
Water Storage ◽  
Storage Reservoir ◽  
Large Water

Drivers of water quality in a large water storage reservoir during a period of extreme drawdown

2008 ◽  
Vol 42 (19) ◽  
pp. 4711-4724 ◽  
Author(s):  
Darren S. Baldwin ◽  
Helen Gigney ◽  
Jessica S. Wilson ◽  
Garth Watson ◽  
Amy N. Boulding
Keyword(s):  
Water Quality ◽  
Water Storage ◽  
Storage Reservoir ◽  
Large Water

scholarly journals The effect of household storage tanks/vessels and user practices on the quality of water: a systematic review of literature

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Musa Manga ◽  
Timothy G. Ngobi ◽  
Lawrence Okeny ◽  
Pamela Acheng ◽  
Hidaya Namakula ◽  
...  
Keyword(s):  
Systematic Review ◽  
Water Quality ◽  
Storage Tank ◽  
Grey Literature ◽  
Water Storage ◽  
Storage Tanks ◽  
Water Storage Tank ◽  
Hygiene Practices ◽  
Quality Of Water ◽  
Vessel Material

Abstract Background Household water storage remains a necessity in many communities worldwide, especially in the developing countries. Water storage often using tanks/vessels is envisaged to be a source of water contamination, along with related user practices. Several studies have investigated this phenomenon, albeit in isolation. This study aimed at developing a systematic review, focusing on the impacts of water storage tank/vessel features and user practices on water quality. Methods Database searches for relevant peer-reviewed papers and grey literature were done. A systematic criterion was set for the selection of publications and after scrutinizing 1106 records, 24 were selected. These were further subjected to a quality appraisal, and data was extracted from them to complete the review. Results and discussion Microbiological and physicochemical parameters were the basis for measuring water quality in storage tanks or vessels. Water storage tank/vessel material and retention time had the highest effect on stored water quality along with age, colour, design, and location. Water storage tank/vessel cleaning and hygiene practices like tank/vessel covering were the user practices most investigated by researchers in the literature reviewed and they were seen to have an impact on stored water quality. Conclusions There is evidence in the literature that storage tanks/vessels, and user practices affect water quality. Little is known about the optimal tank/vessel cleaning frequency to ensure safe drinking water quality. More research is required to conclusively determine the best matrix of tank/vessel features and user practices to ensure good water quality.

scholarly journals Seasonal and Spatial Dynamics of Gas Ebullition in a Temperate Water-Storage Reservoir

2017 ◽  
Vol 53 (10) ◽  
pp. 8266-8276 ◽  
Author(s):  
Michal Tušer ◽  
Tomáš Picek ◽  
Zuzana Sajdlová ◽  
Tomáš Jůza ◽  
Milan Muška ◽  
...  
Keyword(s):  
Spatial Dynamics ◽  
Water Storage ◽  
Temperate Water ◽  
Storage Reservoir ◽  
Gas Ebullition

scholarly journals Gravity as a tool to improve the hydrologic mass budget in karstic areas

2021 ◽  
Author(s):  
Tommaso Pivetta ◽  
Carla Braitenberg ◽  
Franci Gabrovšek ◽  
Gerald Gabriel ◽  
Bruno Meurers
Keyword(s):  
Hydrodynamic Model ◽  
Water Mass ◽  
Water Storage ◽  
Drainage System ◽  
Mass Budget ◽  
Cave System ◽  
Super Conducting ◽  
Water Volumes ◽  
Large Water

Abstract. Monitoring the water movements in karstic areas is a fundamental but challenging task due to the complexity of the drainage system and the difficulty in deploying a network of observations. Gravimetry offers a valid complement to classical hydrologic measurements in order to characterize such systems in which the recharge process causes temporarily accumulation of large water volumes in the voids of the epi-phreatic system. We show an innovative integration of gravimetric and hydrologic observations that constrains a hydrodynamic model of the Škocjan cave system (Slovenia). We demonstrate how the inclusion of gravity observations improves water mass budget estimates for the Škocjan area based on hydrological observations only. Finally, the detectability of water storage variations in other karstic contexts is discussed with respect to the noise performances of spring and super-conducting gravimeters.

Water Storage Bucket Chain Convey-Cleaning Machine for Cleaning Up Coal Mine Water Storage

2012 ◽  
Vol 164 ◽  
pp. 497-500
Author(s):  
Yu Jing Jia ◽  
Da Yu Zhang ◽  
Guang Zhen Cheng ◽  
Ying Jun Dai
Keyword(s):  
Control System ◽  
Water Content ◽  
Coal Mine ◽  
Water Storage ◽  
Vacuum Suction ◽  
Electrical Control ◽  
Mechanical Structure ◽  
Cleaning Machine ◽  
Coal Slime ◽  
Large Water

This Paper introduced a water storage bucket chain conveyor cleaning machine used in coal mine to clean up the underground water storage, which was mainly made up of the mechanical structure and electrical control system. The mechanical structure consists of walking flatbed, walking drives, chain bucket conveyor. Here focuses on the special structure, the working principle, the work process, the electrical control system, the working condition, the main features and the purpose of the chain bucket convey-cleaning machine. The machine structure was reasonable, the stress was even, the vibration was small, the movement was steady. It can not only adapted to a large water content of coal slime, but also adapted to dry coal slime. It overcomes the low efficiency of spiral roller clearance dealing with the large water content of the slime and the weakness when vacuum suction-type pneumatic conveyor is to clean the dry slime.

scholarly journals Microbiologic effectiveness of hand washing with soap in an urban squatter settlement, Karachi, Pakistan

2001 ◽  
Vol 127 (2) ◽  
pp. 237-244 ◽  
Author(s):  
S. P. LUBY ◽  
M. AGBOATWALLA ◽  
A. RAZA ◽  
J. SOBEL ◽  
E. D. MINTZ ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Storage ◽  
Hand Washing ◽  
Wash Water ◽  
Coliform Bacteria ◽  
Contaminated Water ◽  
Final Model ◽  
Safe Water ◽  
Squatter Settlement ◽  
The Difference

We conducted a study in a squatter settlement in Karachi, Pakistan where residents report commonly washing their hands to determine if providing soap, encouraging hand washing, and improving wash-water quality would improve hand cleanliness. We allocated interventions to 75 mothers and collected hand-rinse samples on unannounced visits. In the final model compared with mothers who received no hand-washing intervention, mothers who received soap would be expected to have 65% fewer thermotolerant coliform bacteria on their hands (95% CI 40%, 79%) and mothers who received soap, a safe water storage vessel, hypochlorite for water treatment, and instructions to wash their hands with soap and chlorinated water would be expected to have 74% fewer (95% CI 57%, 84%). The difference between those who received soap alone, and those who received soap plus the safe water vessel was not significant (P = 0·26). Providing soap and promoting hand washing measurably improved mothers' hand cleanliness even when used with contaminated water.

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