QUANTIFICATION OF POLLUTANTS MASS AND ENERGY CONSUMPTION AS A TOOL FOR INDUSTRIAL WASTEWATER POLLUTION CONTROL IN STEEL INDUSTRY

Authors

  • Nguyen Tra My Institute of Environmental Science and Engineering (IESE)
  • Nguyen Viet Anh Institute of Environmental Science and Engineering (IESE)
  • Nguyen Hoang Anh

DOI:

https://doi.org/10.15625/2525-2518/58/3A/14355

Keywords:

steel industry, wastewater treatment and reuse, energy balance, material flow analysis, STAN.

Abstract

Quantification of mass flows in production lines and waste treatment lines, as well as quantification of energy consumption at a factory is always challenges in cleaner production and pollution control decision making. The case study has conducted at a representative steel making complex in Vietnam, simulating the material flows of water and waste streams, and energy balance (EB) for water production and wastewater treatment processes, by using STAN (subSTance flow ANalysis) and SANKEY software, respectively. Input data were taken from secondary data sources, and additional monitoring of wastewater flows at the complex. COD was a selected parameter for material flow analysis (MFA) for evaluation of performance of wastewater treatment plants. Further, two scenarios were given for comparison of water and energy consumptions at existing and upgraded wastewater treatment plants. The results have shown that scenario 2, using disc filter (DF) and ultrafiltration (UF) membrane in combination with ultraviolet (UV) for improving quality of treated wastewater, could allow factory to reuse wastewater for production purposes. At the saved amount of fresh water 10,000 m3/day by reuse of treated wastewater, the saved energy was 1,489.5 kWh/day. The quantitative flows of MFA and EB were clearly presented in STAN and SANKEY diagrams.

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References

Pratima Singh, C. C.-M. and A. Kansal - Energy pattern analysis of a wastewater treatment plant. Appl Water Sci 2 (2012) 221-226.

E.I.A.Report - Environmental impact assessment report, (2016).

ACWUA - Wastewater Reuse in Arab Countries- Comparative Compilation of Information and Reference List. Arab Countries Water Utility Association, (2010).

National Research Council - Water Reuse: Potential for Expanding the Nation’s Water Supply Through Reuse of Municipal Wastewater, National Research Council. Committee on the Assessment of Water Reuse as an Approach for Meeting Future, Water Supply Needs Water Science and Technology Board, Division on Earth and Life Studies, Washington, D.C, (2012).

U.S. Environmental Protection Agency - Guidelines for Water Reuse. Office of Wastewater Management, Office of Water, Washing-ton, D.C, No. EPA/600/R-12/618 (2012)

WHO - WHO guidelines for the safe use of wastewater, excreta and greywater. Volumes 1-4, Switzerland (2006) (retrieved at http://www.who.int/water_sanitation_health/wastewater/gsuww/en/index.html )

Lazarova, V., Choo K. H. & Cornel P - Meeting the challenges of the water-energy nexus: the role of reuse and wastewater treatment. Water21: 14(12) (2012) 12-17.

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Published

25-05-2020

Issue

Section

INTERNATIONAL FORUM ON GREEN TECHNOLOGY AND MANAGEMENT (IFGTM2021)