[Objective] The research aimed to study treatment effect of the sewage by purified diatomite combining A/O process.[Method]By using purified diatomite combining A/O process,influences of the purified diatomite dosage and internal reflux ratio on sewage treatment effect were inspected,and the best process parameter was determined.[Result] Comprehensively considering removal effects of the nitrogen and phosphorus and running cost of the system,the best purified diatomite dosage was 40 mg/L.Internal reflux ratio was designed as 200％,and external reflux ratio was 50％-70％.According to influent water quality,biochemical total residence time was designed during 6-8 h.[Conclusion] Under the best running condition,effluent of the system reached Level-one A discharge standard (GB18918-2002).%[目的]研究硅藻精土结合A/O工艺的污水处理效果.[方法]利用硅藻精土结合A/O工艺,考察硅藻精土投加量和内回流比对污水处理效果的影响,确定最佳工艺参数.[结果]综合考虑系统脱氮除磷的效果及运行成本,最佳硅藻精土投加量应控制在40 mg/L,设计内回流比200％、外回流比50％ ～ 70％,生化总停留时间可根据进水水质情况考虑在6～8h.[结论]在最佳运行条件下,该系统出水达到(GB18918-2002)一级A排放标准.
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机译：用于啤酒的二次过滤的过滤材料及其生产方法技术领域本发明涉及一种用于包含硅藻土的啤酒的二次过滤的过滤材料及其制备方法，其中在与过滤的啤酒的流动相反的方向上，所述过滤材料为由第一层粗过滤硅藻土制成，其厚度大于2毫米，过滤面积的范围为0.66至1.05 kg / me2，第二层由混合物制成，厚度大于2毫米过滤面积为0.55至1.20 kg / me2的细过滤硅藻土和过滤面积为0.10至0.20 kg / me2的吸附材料，第三过滤层具有粗滤硅藻土和细滤硅藻土的重量比为10:90至30:70的混合物产生的厚度大于1.5mm。
