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Comment Water Treatment

Modern Water-Treatment Challenges

By Brad Buecker and Brian Clarke, Kiewit Power Engineers |

Water and wastewater treatment are extremely important at liquefied natural gas (LNG) facilities and other industries that are blossoming due to the shale-gas boom. Engineering concerns are similar to those of other industrial water-treatment and power-generation systems, but with the added issue of adequate treatment for entrained hydrocarbons. With proper system design and operation, plant personnel can plan for, and react to, issues that could otherwise cause unit shutdown, environmental hazards or safety problems. The enormous growth in shale-gas production has led to an expansion in the number of LNG distribution facilities in the U.S. These facilities require power and steam to compress and cool incoming natural gas, and also to scrub the gas of impurities that would otherwise interfere with the liquefaction process. Economically, it is often logical to use a portion of the incoming natural gas as a source of energy for onsite combined-cycle power and steam generation. However, a number of specific engineering challenges confront personnel who must work with makeup water, process water and wastewater treatment for such complex and integrated facilities. Many of the water-treatment processes discussed in this article are also…
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