experimental research on pretreatment of polluted raw water with higher turbidity and higher ammonia-n concentration by biological contact oxidation process with elastic packing was conducted and compared with conventional water treatment process. experimental results showed that removal rates of ammonia-n, codmn, and uv254 were 60%～80%, 0.5%～25%, and 1%～15% respectively at raw water turbidity of 50～200ntu, ammonia-n concentration of 1～10mg/l and temperature of 18～30 ℃.during the test, higher turbidity (from 200 ntu to 800ntu) of raw water had no significant effect on removal efficiency of ammonia-n and codmn. nitrite removal rate was 20%～50%, but nitrite accumulation took place when ammonia-n concentration was rather high. with the bcop, pollutants removal effects of subsequent sedimentation tank and rapid sand filter could be improved.
范文摘要：采用生物接触氧化技术预处理微污染原水，并和水厂常规处理工艺进行了对比。中试结果表明，原水浊度为50～200ntu、氨氮浓度为1～10mg/l、水温为18～30℃时，生化池对氨氮的去除率为60%～80%，codmn去除率为0.5%～25%，uv254的去除率为1%～15%；正常运行时，较高浊度(200～800ntu)的冲击不会明显影响生化池对氨氮和codmn的去除；生化池的亚硝酸盐氮去除率为20%～50%，在原水氨氮浓度较高时亚硝酸盐氮积累增多；增加生物接触氧化预处理工艺，显著提高了后续混凝沉淀池和砂滤池的除污染效果。
The fruit-packing steed with the half-open bag (China pat. No.99216387.0), is tree times as fast as that with the conventional full-open plastic film fruit bag, thus saving 600 hours of fruit-packing time for each hectare of fruit farm.
半开口与传统的大开口塑膜果袋比较，果农挂袋速度提高2倍，每公顷可节省挂袋用时600小时以上。2000年9月，该专利曾在首届香港中华专利博览会上获得金奖。
Sack is often used for transporting wood piece. Conventional packing plan of compressing wood piece is cuboid packing plan of cylinder, which hasn't made good use of the measurement If the package, pr unit loading is low.
木片运输常用的包装物为麻袋，常规的木片压实打包案为长方体或圆柱形包装，没有充分利用包装物的尺寸，单位装载量较低。
By comparing conventional activated sludge SBR process with SBR systems putting into sponge iron as biological carrier, the feasibility of sponge iron as the packing for biological treatment was investigated.
但海绵铁电极反应溶出的铁离子如果过量，又会对微生物产生毒害作用，故研究海绵铁生物载体填料对生化处理效果的影响，确定出合理的载体加量是这一研究的首要问题。
Considering the influence of the special working condition, some conventional and late-model hermetically-sealed structure can be used potentially were discussed, and the operating principle, main advantages and applicability of packing seal, mechanical seal, floating-ring seal, helix seal and ferrofluid seal were introduced respectively.
以特殊工作需要为依据，探讨了几种可能被采用的传统和新型密封型式，介绍了填料密封、机械密封、浮环密封、螺旋密封和磁流体密封的工作原理、性能特点和适用范围。
For the production expansion of methanol in Shanghai Coking and Chemical Corporation, a new high efficient regular packing tower was applied instead of the conventional valve tower to enhance its capacity, through which the production scale was enhanced from 200 kt/a to 350 kt/a.
为了扩大甲醇装置的生产规模，上海焦化有限公司将原有20万t/a以浮阀塔技术为基础的精馏生产工艺改造成35万t/a的新型高效填料塔生产工艺。
Conical degree spiral packing has unique structure, and has completely different hydromechanical characteristics with the conventional packing.
锥度螺旋填料独特的结构，使其具有与常规填料完全不同的流体力学特性。
Results The uniformity in conventional CT was better than that in spiral CT with software emended function before packed with aluminum loop with the condition of head CT scan, and just the opposite result was obtained after packing.
结果用头部条件扫描，模体未包铝环时，普通CT机的均匀性优于有软件校正功能的多层螺旋CT机；
And the packing density of MgF_2 layers in the filters was calculated. The calculated density of MgF_2 with IAD was increased from 0.70 for conventional process to 0.97. The spacer layer has great influence on the spectral shift.
计算了滤光片中MgF2膜层的聚集密度，离子辅助沉积使MgF2膜的聚集密度从常规条件下的0.70提高到0.97，增幅达38%。
This packing has been develped to replace asbestos packing provides and even much better It affords longer service life under severe conditions which conventional asbetos packing can notprovide satisfaction, such assandslurry, tinmining, paper slurryfeed water pump of power stations, etc.
这种盘根用在泵系统内一直被发展以替代石棉盘根，凡石棉盘根可用的领域它都能胜任而且性能比石棉还要好。这种盘根提供了较长的寿命。即使用在普通的石棉盘根下不能提供满意结果的恶习劣条件下，如在砂浆、锡矿、纸浆、发电厂的给水泵等。
The geometric structure of cake provides a possibility to pack a high packing density than the same bed volume of a conventional column, resulting in a less band broadening of proteins.
随着填料粒径的减小，蛋白的分离效果逐渐变好，色谱饼的几何结构使得其填料装填密度要高于同体积的常规色谱柱，并因此减弱了蛋白的谱带展宽。
Experimental research on pretreatment of polluted raw water with higher turbidity and higher ammonia-N concentration by biological contact oxidation process (BCOP) with elastic packing was conducted and compared with conventional water treatment process.
采用生物接触氧化技术预处理微污染原水，并和水厂常规处理工艺进行了对比。