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cod去除
    the results shows that the rate of COD elimination by ABR reactor was upper than 79 percentage in lab condition,even though under the condition of organic mater load being 5.05 kg COD/(m3·d),the rate of COD elimination exceeded 75 percentage.
    研究表明,在实验范围内,反应器的COD去除率在79%以上,即使在有机负荷为5.05kg COD/(m3.d)时,COD去除率也可以达到75%以上;
    under the condition of residence duration being 24 h,the rate of COD elimination in earlier phase was higher in later phase with ratio of BOD5/COD being 0.50.
    当水力停留时间为24h,提高有机负荷ABR反应器的COD去除率先升高后降低; BOD5/COD的比值可达0.50。
    The quality of polluted water from Kuihe was obvioudy improved by culturing Hydrodictyon and Cladophora in it after self-pusification. The oxygon content of purified water increased from 0. 33 mg/L to 11. 1 mg/L and ratio of COD elimination 98. 6 % two weeks after treatrnent.
    运用自净及自净后放养水网藻和刚毛藻的方法对奎河污水进行处理.处理后的污水水质得到了明显改善,溶氧量由原来的0.33mg/L增长至11.10mg/L,COD去除率为98.6%。
    COD elimination efficiency of the treated water can reach 75% or more, and the transmittancy can reach 92%~99%.
    用自制阳离子聚丙烯酰胺 (PDA)与PAC配合处理废纸再生造纸废水 ,出水COD去除率达 75 %以上 ,透过率达 92 %~ 99%。
    After the treatment for the life-dirty water by polyaluminium chloride ratio of elimination for feculence degree is 0.978, ratio of chroma elimination is 0.625, ratio of COD elimination is 0.516, by means of the coagulation-flocculation jar test.
    通过混凝杯罐试验,用聚合氯化铝对所采生活污水进行处理后,浊度去除率达到0.978,色度去除率达到0.625,COD去除率达到0.516。
    The results indicate that gas products were CO2 N2 and excess O2. The COD elimination efficiency was significantly improved as reaction temperature, pressure, residence time or oxidant dosage was increased.
    采用气相色谱分析研究了反应后的气相产物,结果表明氧化产物是CO_2、N_2和过量的O_2。 提高反应温度、反应压力、延长停留时间和增加氧化剂用量,均能提高有机物的分解氧化程度,使COD去除率增大。
    The main influential factors of COD elimination efficiency were temperature, pressure and residence time. Oxidant dosage had little influence on SCWO under conditions of oxidant excess.
    反应温度、压力和停留时间是影响有机物COD去除率的主要因素,在保证氧化剂过量的情况下氧化剂用量对超临界水氧化反应的影响较小。
    1. Supercritical Water Oxidation can achieve great effects on organic decomposition. On experimental conditions, the COD elimination effects of the high concentration organic can exceed 99%.
    1.超临界水氧化技术对有机污染物有着很好的去除效果,在实验条件下,高浓度有机污染物的COD去除可以达到99%以上。
    2. The higher temperature, pressure and longer residence time can promote the COD elimination effects.
    2.提高反应温度,反应压力,延长停留时间,均能使有机物氧化的COD去除率增大。
    Among these factors, temperature and residence time have greater influence on the COD elimination effects, but the pressure's influence is weak comparatively.
    在这些影响因素中,温度、停留时间对有机物氧化的COD去除率的影响较大,压力对有机物氧化反应的影响较小。
    3. The Oxidant seldom has any influence on the COD elimination when he was excessive.
    3.增加氧化剂的用量当氧化剂过量时对COD去除率几乎没有影响。
    The results show that the flocculating ability of PDA with 30 % cationicity in three kinds of PDA is best, COD elimination efficiency of the treated water can be reduced to 79 .4 % , the transmittancy can reach 93 .5 % , and the formed floes are large and tenacious.
    结果表明在选用的3种阳离子度PDA产物中,阳离子度30%的样品具有最大的COD去除能力,达到79.4%,相应上清液的透过率为93.5%,并且形成的絮体大而韧。
    The COD elimination efficiency is significantly improved as reaction temperature, pressure or residence time is increased.
    升高温度、升高压力和延长停留时间使COD去除率显著提高。
 

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