“Power Plant Wastewater Treatment Options and Obstacles Expand” - Hot Topic
Hour March 12, 2015
With new effluent guide limits set to be promulgated later this year, there is lots of interest in technologies to minimize wastewater and to better treat the water which is discharged.
Revision Date: 3/12/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, U.S. DOE, Veolia, Heat Exchanger, Forward Osmosis, Zero Liquid Discharge System, Selenium, Reverse Osmosis, Electrodeionization
With new effluent guide limits set to be promulgated later this year, there is
lots of interest in technologies to minimize wastewater and to better treat the
water which is discharged. A range of subjects were discussed by four speakers.
Jeff Tate of Agape explained that the pre-filtration-RO-Electro deionization combination is the desired approach to ultrapure water for power plants. The wastewater caused by the RO reject can be minimized with a second stage RO system.
Jeff explained that the pre-filtration-RO-Electro deionization combination is the desired approach to ultrapure water for power plants.
Revision Date: 3/12/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Agape Water Solutions, Wastewater, Reverse Osmosis, Electrodeionization
Brian
Clarke
of Kiewit provided a
comprehensive analysis of wastewater treatment options. There are two factors
impacting the decision
·
Meet
NPDES effluent limit requirement
·
Minimize the amount of fresh water consumed
The
ultimate reduction route is Zero Liquid Discharge (ZLD).
Evaporated water can be condensed and utilized.
Brian presented an analysis of wastewater treatment options.
Revision Date: 3/12/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Kiewit, Wastewater, Zero Liquid Discharge System
Barbara Carney
of DOE pointed out that
forward osmosis can utilize the waste heat in the the plant to purify water and
this should make it attractive. The
forward osmosis program is one of four now underway in the wastewater sector.
Barbara pointed out that forward osmosis can utilize the waste heat in the the plant to purify water and this should make it attractive.
Revision Date: 3/12/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, U.S. DOE, Wastewater, Heat Exchanger, Forward Osmosis
Caroline Dale
of Veolia Water reported that
the moving membrane bio reactor has performed well in tests on FGD wastewater.
It is removing enough selenium to meet the new Utility ELG which will be
promulgated later this year. Caroline was asked why the process was upflow
rather than downflow. She replied, “The reason for operating the SeleniumZero
column in upflow mode is to avoid compressing the absorption media. Since there
are very few solids going into the column, we do not need the filtration
function. “
Selenium Reduction by Caroline Dale, Veolia - Hot Topic Hour March 12, 2015
Caroline reported that the moving membrane bio reactor has performed well in tests on FGD wastewater. It is removing enough selenium to meet the new Utility ELG which will be promulgated later this year.
Revision Date: 3/12/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Veolia, Wastewater, Selenium