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| sewage treatment | |||
| waste water treatment Any process to which wastewater is subjected which would remove, or otherwise render harmless to human health and the environment, its constituent wastes; waste water treatment | |||
| wastewater treatment | |||
| sewage processing | |||
| tratamiento de aguas residuales: 58 phrases in 10 subjects |
| Chemistry | 1 |
| Education | 2 |
| Environment | 39 |
| General | 1 |
| Name of organization | 2 |
| Politics | 1 |
| United Nations | 1 |
| Waste management | 4 |
| Water resources | 6 |
| Water supply | 1 |