Influence of Copper Recovery on the Water Quality of the Acidic Berkeley Pit Lake, Montana, U.S.A.

2015 ◽  
Vol 49 (7) ◽  
pp. 4081-4088 ◽  
Author(s):  
Nicholas J. Tucci ◽  
Christopher H. Gammons
Keyword(s):  
Water Quality ◽  
Copper Recovery ◽  
Pit Lake ◽  
Berkeley Pit

scholarly journals Improvements to the Water Quality of the Acidic Berkeley Pit Lake due to Copper Recovery and Sludge Disposal

2019 ◽  
Vol 39 (3) ◽  
pp. 427-439
Author(s):  
Christopher H. Gammons ◽  
Gary A. Icopini
Keyword(s):  
Water Quality ◽  
Water Column ◽  
Large Scale ◽  
Copper Recovery ◽  
Pit Lake ◽  
Lime Treatment ◽  
Sludge Disposal ◽  
Berkeley Pit ◽  
Co Precipitation

AbstractThe chemistry and limnology of the Berkeley Pit lake, located in Butte, Montana, have substantially changed during the past 15 years. These changes are due to: (1) a large-scale Cu recovery project in which deep water was pumped to a Cu precipitation plant and returned to the surface of the lake; and (2) in-pit disposal of lime-treatment sludge. As a consequence, the lake has shifted from a meromictic to a holomictic state, over 99% of the dissolved Fe has precipitated as schwertmannite and other ferric solids, the total acidity of the water column has dropped by roughly 35%, and the pH has risen from about 2.5 to near 4.1. Whereas most of the lake was anoxic prior to 2013, the water column now contains > 6 mg/L dissolved oxygen from the lake surface to the deepest levels sampled (> 150 m). Concentrations of several other solutes, including As, P, Cr, and V, have fallen sharply due to adsorption or co-precipitation with Fe, while other species, such as Al, Mg, and Mn, have increased due to dissolution of solids in the sludge. Although the Cu recovery circuit was discontinued in 2013, in-pit disposal of sludge is expected to continue. The pit water is now close to saturation with basaluminite, and the pH should remain poised in the range of 4.1–4.5 for many years as Al precipitates out of the water column. Pumping and treating of pit water is set to commence in 2019, and will continue for the foreseeable future. Continued in-pit disposal of sludge should translate into long term water-quality improvement and a decrease in annual lime-consumption costs. Although the Berkeley Pit still has a long ways to go before it will meet water quality standards, it is heartening to mine-water specialists that the pit lake may not be a problem that is “too big to fix”.

scholarly journals Pit Lake Water Quality of Central India

2016 ◽  
Vol 08 (01) ◽  
pp. 28-39 ◽  
Author(s):  
Shobhana Ramteke ◽  
Vintee Verma ◽  
Suryakant Chakradhari ◽  
Pravin Kumar Sahu ◽  
Bharat Lal Sahu ◽  
...  
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Central India ◽  
Pit Lake ◽  
Lake Water Quality

Stratification and water quality of an abandoned opencast coal pit lake at Raniganj Coalfield Area, West Bengal, India

2015 ◽  
Vol 20 (2) ◽  
pp. 85-100
Author(s):  
Subinoy Mondal ◽  
Aloke K. Mukherjee ◽  
Tarakeshwar Senapati ◽  
Sandipan Pal ◽  
Smaranya Haque ◽  
...  
Keyword(s):  
Water Quality ◽  
West Bengal ◽  
Pit Lake ◽  
Raniganj Coalfield

Spatial and Temporal variation analysis of water quality of Hemavathi River, Karnataka, India

2018 ◽  
Vol 6 (9) ◽  
pp. 196
Author(s):  
Santhosh K. M ◽  
S. Prashanth
Keyword(s):  
Water Quality ◽  
Agricultural Runoff ◽  
Spatial And Temporal Variation ◽  
Final Conclusion ◽  
Variation Analysis ◽  
Pollution Load ◽  
Quality Of Water ◽  
Pollution Loading ◽  
Origin Point

Urban development, agricultural runoff and industrialization have contributed pollution loading on the environment.  In this study Hemavathi river water from a stretch from its origin point to its sangama was studied for pollution load by determining parameters of water quality like pH, Alkalinity,  Ca, Mg, Nitrate, TDS, BOD, COD , and the results were compared with WHO and BIS standards to draw final conclusion on the quality of water.

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

PENGARUH KONDISI EKOSISTEM DARAT KORIDOR SUNGAI TERHADAP DANAU RAWA PENING

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
E. Hanggari Sittadewi
Keyword(s):  
Water Quality ◽  
Water Hyacinth ◽  
River Corridors ◽  
River Corridor ◽  
Environment Degradation

Environment degradation in Rawa Pening’s lake is caused of descend lake’s functions for some potentions and activities around the lake. Some problems in the Rawa Pening’s lake has emerged i.e : decrease water quality of lake, abundance of water hyacinth growth and increase sediment in the bottom lake. A research about infl uences of land ecosystem on Panjang and Galeh river corridors for Rawa Pening’s lake has been done. Two rivers named Galeh and Panjang are the largest water contribution in Rawa Pening’s lake. That caused the land characteristic ecosystem of that river corridors gives infl uences in the Rawa Pening’s lake.Key words: land ecosystem, river corridor, water contribution, Rawa Pening Lake.

Sign in / Sign up

Export Citation Format

Share Document