Detailed text transcripts for TV channel - DW - 20171128:01:40:00
On that of a tough income. another advantage is that the plant also produces bio gas for cooking. the amount covers the daily demand and completely replaces the need for charcoal. the family can save its pennies and the bio gas option also makes their daily life easier. the efficiency of the sewage plants is controlled by border in a special small lab. despite the simplicity of the system the bacteria in the filtration chambers react sensitively to chemical impurities. by constantly optimizing the process the applications are increased. the future brings new technical challenges. the first res...
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