Hydrogen sulphide and methane are present many places in the ground water and are formed by the decomposition of organic substances under oxygen-free conditions. Both gasses give cause for different problems for a waterworks. Filters are clogged up by bacterial slime which reduces the content of oxygen and often, bad smell is also an indication of bacteria. In some cases, the bacteria can form hydrogen sulphide and methane. It is important that all hydrogen sulphide and methane are removed because a residual amount of these gasses in the water will complicate the removal of iron and ammonium afterwards.
Both hydrogen sulphide and methane can be removed by heavy oxydation of the water. The oxydation takes place by aeration in order to add oxygen to the raw water.
Complete water treatment plant consisting of degasser in stainless steel and pressure filter for production of 20 m³/h. The task in brief: Degassing of methane and hydrogen sulphide and reduction of iron, manganese, and ammonium.