为减少污泥干化过程中的含硫气体释放,开发新型污泥干化技术,研究了温度、时间等对含硫气体释放的影响,提出了控制CS2、H2S和SO2释放的工艺及操作参数:降低温度、缩短时间和掺加氧化钙均可有效减少CS2、H2S和SO2释放量;温度控制在250 ℃以下,时间控制在30 s以内,且污泥与氧化钙的混合比为1∶1时,对CS2、H2S和SO2的抑制率可接近100%.
To reduce the emission of the sulfur-containing gas during drying of sludge and develop new type of drying technology, this paper studies the factors such as the temperature,time on the influence the release of the sulfurous gas and put forward the process and parameter to control the release the carbon disulfide, hydrogen sulfide and sulfur dioxide:reducing the drying temperature,shorting the drying time and adding calcium oxide all can control the release of the carbon disulfide, hydrogen sulfide and sulfur dioxide effectively.Control the drying temperature below 250 ℃and drying time within 30 s.When the proportion of sludge and calcium oxide is 1∶1, the rate of inhibition for the gas is close to one hundred percent.
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