A case study on the design of condenser effluent outlet of thermal power plant to reduce foam emitted to surrounding seacoast

A case study of numerical modeling and physical experiment was carried out to search for best design of the new condenser effluent outlet of a thermal power plant that minimizes the amount of foam emitted from the outlet. The generation of foam cannot be exactly simulated or reproduced in both methodologies so that the focus of study was placed on minimizing the amount of entrained air volume, which is the main source of the foam formed on the water surface around the effluent outlet. The proposed outlet structure includes a stepped drop to diminish air entrainment and multiple curtain walls to delay emission of the generated form. By comparing the air fraction in the outlet for various geometries of the drop and curtain walls, the detailed design of the outlet was determined so as to make the air fraction minimum.

[1]  W. Mills,et al.  Analysis of water temperatures in Conowingo Pond as influenced by the Peach Bottom atomic power plant thermal discharge. , 2000 .

[2]  J. Macqueen,et al.  Cooling water discharges into a sea with a sloping bed , 1983 .

[3]  Jan W. Bloemkolk,et al.  Design alternatives for the use of cooling water in the process industry: Minimization of the environmental impact from cooling systems , 1996 .

[4]  J. Day,et al.  A feasibility analysis of discharge of non-contact, once-through industrial cooling water to forested wetlands for coastal restoration in Louisiana , 2007 .

[5]  A. Thorhaug,et al.  The effect of heated effluents from power plants on seagrass (Thalassia) communities quantitatively comparing estuaries in the subtropics to the tropics , 1978 .

[6]  A. Fisenko.  A New Long-Term On Site Clean-Up Approach Applied to Non-Point Sources of Pollution , 2004 .

[7]  F. Bärlocher,et al.  Seasonal variation in the organic composition of seafoam , 1989 .

[8]  James G. Mitchell,et al.  The impact of turbulence and phytoplankton dynamics on foam formation, seawater viscosity and chlorophyll concentration in the Eastern English Channel , 2008 .

[9]  M. Hamburger,et al.  Occurrence of stable foam in the upper Rhine River caused by plant-derived surfactants. , 2002, Environmental science & technology.

[10]  Frederick E. Schuepfer,et al.  Case Study: Three-Dimensional Hydrodynamic Model of a Power Plant Thermal Discharge , 2009 .

[11]  S. V. Narasimhan,et al.  Use of coastal waters as condenser coolant in electric power plants: Impact on phytoplankton and primary productivity , 2006 .

[12]  J. Magnuson,et al.  Effects of a power plant on zooplankton distribution and abundance near plant's effluent , 1974 .

[13]  A. German,et al.  Finite element modelling of the thermal outflow of three power plants in Huelva Estuary , 2007, Adv. Eng. Softw..

[14]  S. R. Wild,et al.  Environmental management of coastal cooling water discharges in Hong Kong , 1998 .

[15]  H. Michaelis,et al.  Phaeocystis pouchetii blooms in the East Frisian coastal waters (German Bight, North Sea) , 1986 .

[16]  F. Vardar-Sukan.  Foaming: Consequences, prevention and destruction , 1998 .

[17]  P. Eloranta.  Physical and chemical properties of pond waters receiving warm-water effluent from a thermal power plant , 1983 .

[18]  C. Willmott.  ON THE VALIDATION OF MODELS , 1981 .

[19]  Matthias Zessner,et al.  Cause and effect relationship between foam formation and treated wastewater effluents in a transboundary river , 2009 .