Encyclopedia of Environmental Science and Engineering, Volume I and II

170 COAL GASIFICATION PROCESSES

gas treatment, silica gel from the air separation plant, and

various resins from the water treatment plant.

Sources of non-gasifier atmospheric emissions are cool-

ing tower evaporation and drift, and the gas turbine. The

cooling tower releases will cause salt deposition in the sur-

rounding area. The nature and extent must be determined

and evaluated using intake water quality data, design infor-

mation and mathematical modeling. The on-site gas turbine

will emit low levels of NO x , SO 2 and particulates which will

have to be considered.

Other impacts associated with any large scale project are

those related to the construction of the plant. There will be

an increase in traffic by the construction work force on the

existing roads. There are potential construction work force

impacts related to workers immigration, shortage of cer-

tain skilled labor categories, etc. which must be assessed.

In addition, there is a potential for noise impacts during the

construction or operation of the facility.

The increase in traffic on the roads, rails and rivers near

a proposed site due to coal deliveries will create additional

demands on the system. The construction of a facility will

have unavoidable impacts on the land use at the site.

Construction and operation may impact on the surface

water bodies and the potable aquifers in the area but due

to the current state of waste water treatment technology,

minimal impact on water quality is expected after control

measures are applied.

The authors wish to acknowledge the work of Quig and

Granger (1983) in an earlier version of this article, some of

which appears here.

REFERENCES

Epstein, M., Elec. Pwr. Res. Inst. Jnl. pp. 39–42 Advanced Power System,

April/May (1987).

Heitz, W.L., Status of the Shell Coal Gasification Process (SCGP) presented

at 5th Annual EPRI Contr. Conference, Palo Alto, CA, Oct. 30 (1985).

Holt, N.A., EPRI Report AP-5931, Oct. (1988).

Le, T.T., J.T. Smith and M.T. Sander, Elec. Pwr. Res. Inst. EPRI Report AP

4395 Jan. (1986).

Lewis, A., EPRI Report AP-5467, Feb. (1988).

Makansi, J., Power, pp. 75–80, Apr. (1987).

Pruschek, R., G. Oeljeklaus and V. Brand, “Combined cycle power plant

with integrated coal gasification, CO shift and CO 2 washing.” Energy

Conversion and Management, June/September 1995, pp. 797–800.

Quig, R.H., Chem. Eng. Prog., 76, 47–54, March (1980).

Quig, R.H. and T. Granger, Encycl. of Envir. Sci. and Eng. Vol. 1, 103–113,

(1983).

Spencer, D.F., S.B. Alpert and H.H. Gilman, Science 232, 609–612,

May (1986).

Swisher, J.H., J. Yang, and R.P. Gupta, Ind. & Eng Chem. Research, Vol. 34,

4463–4471 (1995).

ROBERT J. FARRELL

ExxonMobil

EDWARD N. ZIEGLER

Polytechnic University

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