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2. Water aeration - Wikipedia

   en.wikipedia.org/wiki/Water_aeration

   The impeller pumps water from the first few feet of the water and expels it into the air. [4] This process utilizes air-water contact to transfer oxygen. As the water is propelled into the air, it breaks into small droplets. Collectively, these small droplets have a large surface area through which oxygen can be transferred. Upon return, these ...

3. Hand pump - Wikipedia

   en.wikipedia.org/wiki/Hand_pump

   The bucket and rope system is not compatible with the use of a cover slab, which can prevent pollution of groundwater. In addition, unwashed hands can contaminate the bucket and rope. Hand pumps avoid these issues and are therefore preferable. [1] However, villagers did not stop using traditional means of gathering water during this project.

4. Bucket toilet - Wikipedia

   en.wikipedia.org/wiki/Bucket_toilet

   The bucket is emptied when it becomes full or emits excessive foul odor; usually once a day for large families, and about once a week for smaller families [citation needed]. Some sources say that it averages once per week per person per five-gallon bucket. The quantity of excreta varies widely depending on the amount of fiber in the local diet.

5. Shadoof - Wikipedia

   en.wikipedia.org/wiki/Shadoof

   The shadoof is easy to construct and is highly efficient in use. [5] It consists of an upright frame on which is suspended a long pole or branch, at a distance of about one-fifth of its length from one end. [5] At the long end of this pole hangs a bucket, skin bag, or bitumen-coated reed basket. The bucket can be made in many different styles ...

6. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   A pressure-fed sand filter is typically placed in line immediately after the water pump. The filter typically contains a medium such as graded sand (called '14/24 Filter Media' in the UK system of grading the size of sand by sifting through a fine brass-wire mesh of 14 to the inch (5.5 per centimeter) to 24 to the inch (9.5 per cm)).

7. 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!