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题名: 不同甲醛浓度的废水达标处理与工程示范研究
作者: 徐富
学位类别: 博士后
答辩日期: 2016-05
授予单位: 中国科学院研究生院
授予地点: 北京
导师: 曲久辉
关键词: 甲醛废水 ; CaO 强化氧化 ; formaldehyde wastewater, CaO enhanced oxidation, pretreatment tank, internal circultion anaerobic reactor, anaerobic granular sludge. ; 预处理池 ; IC 厌氧反应器 ; 厌氧污泥颗粒 化
其他题名: Robust treatment and engineering demonstration of formaldehyde wastewater with different concentrations
学位专业: 环境工程
中文摘要:     本研究专注不同甲醛浓度(高、中和低)的废水处理及工程应用问题,主要研究结果如下:
    1、用CaO 强化氧化,加碱控制废水反应的pH 值9.5~10.0,反应温度为80℃,当反应时间为30 min 后,甲醛浓度从20000 mg/L 左右降解到20 mg/L 以下。
    2、采用预处理+IC 厌氧+好氧MBR 膜系统为主的工艺,研究生物法处理中等浓度甲醛废水的工艺条件,采用复合菌群和固定化载体填料的预处理池,成功地将中等浓度的甲醛废水从1100~1650 mg/L 降解到120~150 mg/L,IC 厌氧反应器出水的甲醛浓度稳定在4~6 mg/L 左右,好氧MBR 系统出水的甲醛浓度在1mg/L 以下。预处理池平均进水COD 浓度为6000 mg/L 左右,预处理池出水的COD 平均浓度为5000 mg/L 左右,IC 厌氧反应器出水COD 稳定在600~800 mg/L左右,好氧MBR 系统出水COD 稳定在80~90 mg/L 左右,最终实现了甲醛和
COD 达标排放。
    3、利用好氧剩余污泥作为接种污泥成功地启动生产规模的IC 厌氧反应器处理低浓度甲醛废水,并实现了厌氧污泥颗粒化。当IC 厌氧反应器和充氧池的有机负荷OLR 分别是4 kg COD/(m3·d)和0.3 kg COD/(m3·d)时,厌氧进水的甲醛浓度在13~15 mg/L 左右,厌氧出水的甲醛浓度在1 mg/L 左右,厌氧进水COD 在3500~4500 mg/L 左右,厌氧出水稳定在110~130 mg/L 左右。充氧池出水的COD小于100 mg/L 和甲醛浓度小于1 mg/L。
英文摘要:       This study focused on the problem of wastewater treatment and engineering application of different concentrations of formaldehyde. The results are summarized as follows:
      1. With the role of CaO as enhanced oxidation, formaldehyde wastewater could be degradated rapidly from the concentration of 20000 mg/L to 20 mg/L when the pHwas controlled at 9.5~10.0, the temperature was 80℃, and the reaction time was kept for 30 minutes.
    2. A combined process of pretreatment tank, internal circultion (IC) anaerobic recator and aerobic MBR was used to degrade formaldehyde wastewater with a medium concentration. The pretreatment tank filled with the multiple microorganismsand immobilized carriers could successfully remove formaldehyde from 1100~1650 mg/L to 120~150 mg/L. Meanwhile, the concentrations of formaldehyde could be degraded from 120~150 mg/L to 4~6 mg/L by IC anaerobic reactor, and be stabled at below 1 mg/L by aerobic MBR system. For COD removal,the effluent of 600~800 mg/L could be achieved from 5000 mg/L by pretreatment and anaerobic treatment, further COD degradation with the concentration of 80~90 mg/L
by aerobic MBR was obtained, meeting the both discharge standards simultaneously.
    3. Residual activated sludge as seed sludge was used to accomplish the cultivation in a full-scale IC anaerobic reactor to formaldehyde wastewater treatment at a low concentration of 10~20 mg/L. By controlling the average organic loading rate (OLR) of 4.0 kg COD/(m3·d), the concentration of formaldehyde was decreased from 13~15 mg/L to around 1 mg/L, and the COD was removed from 3500~4500 mg/L to 110~130 mg/L. Finally, the effluent COD and formaldehyde were reached at below 100 and 1 mg/L respectively, when the OLR of aerobic tank was 0.3 kg COD/(m3∙d).
内容类型: 学位论文
URI标识: http://ir.rcees.ac.cn/handle/311016/37029
Appears in Collections:环境水质学国家重点实验室_学位论文

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Recommended Citation:
徐富. 不同甲醛浓度的废水达标处理与工程示范研究[D]. 北京. 中国科学院研究生院. 2016.
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