Selenium and drinking water quality indicators in Mongolia

Trends toward closure of white water recirculation loops in papermaking often lead to a need for system modifications. We conducted a pilot-scale study using pulsed electrocoagulation technology to treat the effluent of an old corrugated containerboard (OCC)-based paper mill in order to evaluate its treatment performance. The operating variables were a current density of 0–240 A/m2, a hydraulic retention time (HRT) of 8–16 min, and a coagulant (anionic polyacrylamide) dosage of 0–22 mg/L. Water quality indicators investigated were electrical con-ductivity, suspended solids (SS), chemical oxygen demand (COD), and true color. The results were encouraging. Under the operating conditions without coagulant addition, the highest removals for conductivity, SS, COD, and true color were 39.8%, 85.7%, 70.5%, and 97.1%, respectively (with an HRT of 16 min). The use of a coagulant enhanced the removal of both conductivity and COD. With an optimal dosage of 20 mg/L and a shortened HRT of 10 min, the highest removal achieved for the four water quality indicators were 37.7%, 88.7%, 74.2%, and 91.7%, respectively. The water qualities thus attained should be adequate to allow reuse of a substantial portion of the treated effluent as process water makeup in papermaking.

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EVALUATION ON THE RURAL DRINKING WATER QUALITY IN A CENTRALIZED SUPPLIED AREA OF CHINA

Environmental Engineering and Management Journal ◽

10.30638/eemj.2016.046 ◽

2016 ◽

Vol 15 (2) ◽

pp. 435-442 ◽

Cited By ~ 1

Author(s):

Wendong Wang ◽

Shan Song ◽

Zixia Qiao ◽

Qin Yang ◽

Mengmeng Wang ◽

...

Keyword(s):

Water Quality ◽

Drinking Water ◽

Drinking Water Quality

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MONITORING OF WATER QUALITY INDICATORS FOR IMPROVING WATER RESOURCES MANAGEMENT OF BAHLUI RIVER

Environmental Engineering and Management Journal ◽

10.30638/eemj.2011.048 ◽

2011 ◽

Vol 10 (3) ◽

pp. 327-332

Author(s):

Igor Cretescu ◽

Roxana Elena Benchea ◽

Matei Macoveanu

Keyword(s):

Water Quality ◽

Water Resources ◽

Quality Indicators ◽

Water Resources Management ◽

Water Quality Indicators ◽

Resources Management

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Drinking-Water Quality and Intestinal Infectious Diseases in a Colombian Department, 2010-2016

Global Journal of Medical Research ◽

10.34257/gjmrfvol20is10pg21 ◽

2020 ◽

pp. 21-29

Author(s):

Dora Cardona Rivas ◽

Militza Yulain Cardona Guzmán ◽

Olga Lucía Ocampo López

Keyword(s):

Water Quality ◽

Drinking Water ◽

Infectious Diseases ◽

Disease Burden ◽

Social Protection ◽

Drinking Water Quality ◽

World Health ◽

The Social ◽

Etiological Agents ◽

Health Organization

Objective: To characterize the burden of intestinal infectious diseases attributable to drinking-water quality in 27 municipalities in the central region of Colombia. Materials and methods: A time-trend ecological study. The drinking-water quality of the National Institute of Health and the Institute of Hydrology, Meteorology and Environmental Studies was identified. The disease burden was calculated based on the mortality registered in the National Department of Statistics and the records of morbidity attended by the Social Protection Integrated Information System. The etiological agents reported in morbidity records and the observation of environmental conditions in the municipalities of the study were included. The disease burden was determined according to the methodology recommended by the World Health Organization (WHO).

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