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1.According to water quality of acid cleaning wastewater(ACW),the treatment process of two-stage aeration neutralization for ACW is defined and further discussed based on theoretical analyses.
根据酸洗废水的水质特点,确定了二级曝气中和法作为酸洗废水的处理工艺,并在工艺理论上进行了分析探讨;收藏指正
2.76. 5% of T-N was removed during AAA stage when aeration fracti0n (AF) and the air on/off cyc1e period were kept at 50% and 6O min respectively.
AAA段在AP＝50％，空气阀开闭周期为60min时，可以去除765％的T－N。收藏指正
3.The culture anaphase was the main production stage of xylitol. Appropriate decrease of aeration and stirring rate could effectively improve fermentation efficiency.
发酵后期为木糖醇主要形成阶段，适当降低通气量和搅拌速率有利于提高木糖醇发酵的效率。收藏指正
4.Under the optimized condition, the dissolved oxygen concentration in the mixed liquid was controlled by rotation velocity of aeration equipment, with the concentration of DO at the range of 2.0mg/L to 2.5 mg/L at aeration stage and at the range of 0.0mg/L to 0.2mg/L at no-aeration stage.
曝气阶段,控制溶解氧浓度为2.0mg/L ~2.5mg/L; 停曝阶段,控制溶解氧浓度为0.0~0.2mg/L。收藏指正
5.According to this situation,the cultivation of activated sludge in SBR aeration tank is classified into two stages: the first stage,making sludge adapt to leather making wastewater and making it have high removal rate to COD;
针对这种情况,把SBR曝气池活性污泥的培养分为2个阶段,第1阶段使污泥适应此制革废水,并使其对COD有较高的去除率;收藏指正
6.Results show that under the conditions of value of pH 3.5, reaction time 35 min, Fe/C ratio 1.2, aeration rate 1.4 L/min, scrap iron size 60-80 meshes, and H_2O_2 dosage 40-60 mg/L, the removal efficiencies of color and COD are 98% and 77%, respectively. The Fe-H_2O_2 process for advanced treatment of papermaking middle-stage wastewater is viable.
结果表明:在pH值为3.5、铁炭比(体积比)为1.2、曝气量为1.4L/min、铁屑粒径为60~80目、H2O2投量为40~60mg/L的最优条件下,当处理时间控制在35min时,对色度和COD的去除率可分别达到98%和77%左右,出水可回用。收藏指正
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