降低低碱值聚异丁烯硫膦酸钙清净剂气味的研究

聚异丁烯硫膦酸钙（简称硫膦酸钙）清净剂加热放出硫化氢气体，是其产生气味的原因。考察硫膦酸钙和其他添加剂复配时产生硫化氢的情况，结果发现硫膦酸钙和烷基苯磺酸钙、ZDDP复配时产生的硫化氢较多。考察后处理工艺对硫化氢放出数量的影响，结果发现：加入后处理剂后，硫化氢放出量有不同程度的下降，其中采用后处理剂X的效果最好。考察合成硫膦酸钙时水解反应时间、钙化助促进剂种类等因素的影响，改进合成工艺，得到的硫膦酸钙清净剂性能满足要求，同时产品放出的硫化氢质量分数低于20 μg/g，达到安全使用的要求。

COMMERCIAL TRIAL OF TREATING REFINING WASTEWATER BY FLUIDIZED BED BIOREACTOR

A commercial refining wastewater treatment, combining a new type of aerobic biological fluidized reactor with high effective bacterial strain and complex carrier, was introduced. The effects of mud concentration, gas to liquid ratio and the hydraulic resident time on the removal rates of COD and NH3-N were investigated. The test results showed that under the optimal operation conditions of a mud concentration of 3. 0-3. 2 g/L, a gas to liquid ratio range of 20 -25, a hydraulic resident time of 6 - 7 h, the removal rates of COD and NH3-N were more than 85% and 90%, respectively. The contents of COD and NH3-N in treated water were less than 100 mg/L and 10 mg/L, respectively. The effluent quality met and exceeded the first class requirements of the national discharge standard (GB 8978-1996).