Before we introduce MEF, let us know some facts
about waterless urinals and where they fail in Indian conditions.
But do they really work? especially in a country like India with demanding conditions and tough weather, mostly humid in most of the part of the country?
Waterless urinals are born from the idea of
water saving which sounds very charming.
How do they work:
Waterless urinals look like regular urinals without a pipe for water intake. Men use them normally, but the urinals don't flush. Instead, they drain by gravity. Their outflow pipes connect to a building's conventional plumbing system. Some companies put a trap (it's a cup) in the drain, which they say stifles urine odors. Other companies with costlier model fill the trap/cup with water and a proprietary liquid - usually oil. The liquid simply has to float on the water. The urine sinks, and associated gases can't rise through the oil.
Waterless urinals look like regular urinals without a pipe for water intake. Men use them normally, but the urinals don't flush. Instead, they drain by gravity. Their outflow pipes connect to a building's conventional plumbing system. Some companies put a trap (it's a cup) in the drain, which they say stifles urine odors. Other companies with costlier model fill the trap/cup with water and a proprietary liquid - usually oil. The liquid simply has to float on the water. The urine sinks, and associated gases can't rise through the oil.
But do they really work? especially in a country like India with demanding conditions and tough weather, mostly humid in most of the part of the country?
