1.   At the same time the air pump removes waste water and air from the separate condenser thus maintaining a vacuum in it.

2.   Even waste water from water changes is not allowed to go into our sewage system during this period.

3.   Landfarming is similar to composting systems for destroying organic or biological sludges from municipal and industrial waste water treatment systems.

4.   Urine is processed separately through a more stringent filtration process than the waste water.

5.   A Chilean project has used waste water from copper mines to safely irrigate crops.

6.   The waste water, known as tailings effluent, contains high concentrations of sulphates, molybdenum and copper and was previously considered an ecological hazard.

7.   This is used to treat waste water, while technologies such as catalytic conversion will keep carbon monoxide levels well within the strict Taiwanese limit.

8.   And an on-site wetlands cleanses the waste water, which irrigates the shady flower-strewn grounds.

9.   And he has done so in some cases, for example, selling off the waste water treatment service.

10.   And seven waste water treatment plants are located along the river.