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Comment PDF Water Treatment

Designing an Integrated Wastewater-Treatment System

By Brian Arntsen, SUEZ Water Technologies & Solutions |

Meeting the wastewater-treatment demands of an integrated manufacturing complex demands a design that can address a diverse array of contaminants and discharge requirements Any large, integrated chemical-manufacturing complex will require the implementation of a comprehensive wastewater-treatment solution to address unique wastewater challenges and comply with all necessary effluent discharge requirements. This article outlines the process for designing and commissioning such a wastewater-treatment facility, using real-life examples from Sasol’s new chemical-production plant in Westlake, La., near Lake Charles. The facility produces liquid fuels from coal, and includes a 1.5-million-ton/yr ethane cracker and six downstream chemical plants that will produce chemicals for plastics and other consumer products. The downstream chemical-production facilities include two large polymers plants (low-density and linear low-density polyethylene); an ethylene oxide/ethylene glycol plant; and three smaller, higher-value derivative plants that produce specialty alcohols, ethoxylates and alumina products. For any project of this magnitude, efficient wastewater treatment is essential in supporting effective plant operation. FIGURE 1. Membrane…
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