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2. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

3. Biosand filter - Wikipedia

   en.wikipedia.org/wiki/BioSand_Filter

   The high water level (hydraulic head) in the inlet reservoir zone pushes the water through the diffuser and filter, then decreases as water flows evenly through the sand. The flow rate slows because there is less pressure to force the water through the filter. The inlet water contains dissolved oxygen, nutrients, and contaminants.

4. Membrane bioreactor - Wikipedia

   en.wikipedia.org/wiki/Membrane_bioreactor

   In systems where flux is maintained by increasing transmembrane pressure, the energy required to achieve filtration increases. Frequent membrane cleaning is an alternative that significantly increases operating costs as a result of added cleaning agent costs, added production downtime, and more frequent membrane replacement.

5. Reverse osmosis - Wikipedia

   en.wikipedia.org/wiki/Reverse_osmosis

   An increasingly popular method of cleaning windows is the "water-fed pole" system. Instead of washing windows with conventional detergent, they are scrubbed with purified water, typically containing less than 10 ppm dissolved solids, using a brush on the end of a pole wielded from ground level. RO is commonly used to purify the water.

6. Bio-Oil is on sale at Amazon - AOL

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   Amazon's No. 1 bestselling oil now has over 34,000 five-star ratings, with shoppers raving about its many uses. That's why when a sale happens, we feel obligated to shout it from the rooftops. So ...

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

9. Automated tank cleaning machine - Wikipedia

   en.wikipedia.org/wiki/Automated_tank_cleaning...

   Water forced through rotary jet nozzles rotates the device on a dual axis, creating a 360° cleaning pattern. As the water sprays, the liquid is pumped out of the tank. [5] Portable cleaning systems are commonly used for many outdoor applications [7] while fixed or permanent Clean-in-Place (CIP) systems are used in more sanitary environments. [8]