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两种制革废水生化处理组合工艺的效能比较

Efficiency Evaluation of Two Combined Processes for Treating Tannery Wastewater
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摘要 借助于实际工程的运行,比较了水解酸化与序批式活性污泥法(SBR)组合工艺(H-SBR)和接触氧化与SBR组合工艺(O-SBR)两套设施处理制革废水的效能。结果表明,接触氧化与SBR组合工艺能有效处理制革废水,在接触氧化HRT24h、SBR曝气5—7h的条件下,COD和氨氮平均去除率可分别达到83%和74%,出水平均浓度分别为273和42mg/L。采用水解酸化与SBR的组合工艺对预处理后的制革废水进行处理,在水解酸化HRT24h、SBR曝气5—7h的条件下,COD和氨氮平均去除率分别仅为70%和5%,虽然COD可降低到500mg/L以下,但氨氮高达163mg/L左右,且需配套臭气处理设施。 Two processes used to treat organic wastewater discharged from a tannery are discussed and their treatment efficiencies are compared. The results show that the process of sequencing the batch reactor (SBR) combined with the contact oxidation (O-SBR) is more realistic than that of SBR combined with the hydrolysis acidification (H-SBR). With HRT contact oxidation for 24h and sewage aeration for 5—7h in the SBR, the average removal of 83% for COD and 74% for ammonia are achieved in the O-SBR process. The COD and ammonia in the effluent of the O-SBR process are about 273mg/L and 42mg/L, respectively. With HRT contact oxidation for 24h and the same sewage aeration in the SBR, the average removal of COD and ammonia are only 70% and 5%, respectively, in the H-SBR process. Though the COD is less than 500 mg/L, the ammonia is as high as 163mg/L in the effluent. Furthermore, an attached process to the H-SBR has to be constructed for fetor collection, transfer and treatment.
出处 《科技导报》 CAS CSCD 北大核心 2011年第22期68-71,共4页 Science & Technology Review
基金 黑龙江省发展高新技术产业化项目(FW09C01) 哈尔滨市科技创新人才研究专项(2009RFXXS004)
关键词 制革废水 水解酸化 接触氧化 SBR 氨氮 tannery wastewater hydrolytic acidification biological contact oxidation SBR ammonia nitrogen
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参考文献11

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