I am involved in design of an RO drinking water plant and was curious if there are thoughts on piping material upstream of the RO system. We do not want to use PVC because greensand filtration is planned as pre-treatment, and there may be pressure surges associated with valves slamming shut...
I am looking into biological treatment of wastewater produced at a coal plant. The plants produces 0.4 MGD wastewater with 1700 mg/L NO3-N and virtually no COD/BOD. This stream must be treated down to approximately 25 mg/L before being blended and released. My rough estimate for an anoxic...
I am working on a collection of commercial oilfield disposal sites and am diving in head first to the world of oil-water separation (OWS). The sites will have a truck wash, where recently emptied tankers and end-dump trucks with cutting wastes will wash off. The wastewater from the truck wash...
I am working on a collection of commercial oilfield disposal sites and am diving in head first to the world of oil-water separation (OWS). The sites will have a truck wash, where recently emptied tankers and end-dump trucks with cutting wastes will wash off. The wastewater from the truck wash...
I am working on a project requiring pumps to transfer oily water to an oil water separator. What pump type provides the least amount of emulsification? Low RPM positive displacement seems ideal, but I'd like to get some feedback from people familiar with similar applications.
A plant is considering adding lime, sodium aluminate, and gypsum to precipitate sulfate (CaSO4 - Gypsum!!!). They call the gypsum a seed source or precipitation enhancement agent, and seem to have pilot tests to show it works. I have no idea how adding the product that precipitates can aide in...
I am looking for suppliers of ammonia stripping and scrubbing equipment for a flue gas desulphurization wastewater stream. The stream contains up to 300 mg/L ammonia and a lime process will elevate pH to >11.5 (all NH3 gas), effluent goal is <30 mg/L. Looking for both a stripping unit and a...
I am trying to find a good resource to start with for the design of a system with a pump skid feeding water to a collection of nozzles used for washing trucks. The system has 6 nozzles, 2 of one type, 4 of another. I need a starting point for the analysis of the system when any combination of...
A truck wash down facility at an oil extraction operation is using rotary lobe pumps to move oil/water/silty slurry to an oil/water separator. The oil and chloride content is unknown since operations have not started yet, but there will be salty water used for wash down. Currently, the wetted...
