The troubles of the past week had all been lifted as a result of Jason's party two nights ago, although he had been disappointed by Mrs Lewis' dismissal of him yesterday. The day had, in his opinion, been an ideal opportunity to spend some time with her and she had seemingly caste him aside like a discarded toy! But this evening he had received the summons that he craved for and that had filled him with eager excitement.He rang the doorbell. Mrs Lewis stood on the step above him, looking down at him with a warm smile of satisfaction on her face. "Hello David." Hello Mrs Lewis." Mistress..." She corrected with an eyebrow coked questioningly."Sorry, Mistress."She stepped aside and allowed David to enter. "Close the door and come through to the living room."He followed her through to the living room and found her sitting in her usual place on the sofa. "Undress yourself David."His face immediately coloured up as he felt his hands respond to her request. He pulled his tee shirt off and. " The world needs access to clean drinking water badly, and that need is just going to get worse. The major stumbling block to that is cost, as all of the existing methods of reclaiming water, both sea water and sewage, are expensive."I gave him a nod after his explanation, "Ok, I see the need for desalination. You think you have an idea to change the way things are done?" Yes. It was something I started working on when I was at university. Using a series of membranes I believe we can create a form of reverse osmosis that will clean the water of not just salt and minerals, but contaminants. While I am certain this process would make salt water drinkable, I believe it could also be used to reclaim sewage into drinking water as well ... Although I understand most would not want to use that particular feature. Now reverse osmosis isn't new and is being used for water desalination now. The big problem with current methods is the energy cost needed to make the water clean and usable,.
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