| 摘要 |
<p>A method comprises the steps of: 1) feeding the waste water to an anaerobic digestion system; 2) converting the sulphur compound in the digestion system to a sulphide; 3) circulating an effluent containing the sulphide from the digestion system in a by-pass channel, the channel comprising a stripper system for stripping the sulphide from the effluent; 4) removing the sulphide from the effluent by contacting with a transporting gas in the stripper system; and 5) converting the sulphide to sulphur; wherein 6) the sulphide is absorbed from the transporting gas in an absorber system (11) by an absorbing liquid, which absorbing liquid is passed in a closed loop (26, 11, 21, 22) through the absorber system (11) and the transporting gas is passed in a closed loop (16, 14, 10, 11) via the stripper system (14) and absorber system (11).</p> |
