涤纶织物碱减量工艺废水处理研究

发布时间：2018-05-14 20:43

本文选题：苯二甲酸 + 废水处理　；参考：《水处理技术》2016年12期

【摘要】：针对某纺织工业涤纶织物碱减量工艺废水问题,采用酸化-沉淀及生物处理系统对废水进行处理。在酸化-沉降实验中,在废水中苯二甲酸(TA)质量浓度从19.8 g/L减少到2.75 g/L,去除率达到86%,很大程度上减少了生物处理系统的负载,但是通过酸化-沉淀后废水中的TA使生物降解性能明显减弱,BOD5/COD量从0.37~0.40减少到0.27~0.31。在生物处理实验中,设定进水COD为2 109 mg/L、TA质量浓度为524 mg/L,出水COD为63.17 mg/L、TA质量浓度为5.14 mg/L,去除率分别超过97%、99%。通过实验表明,在需氧型混合膜生物反应器(HMBR)中,生物降解TA物质达到97%;在厌氧型水解酸化生物反应器(HABR)中,生物降解TA仅达到2.3%。同时,在HABR和HMBR反应器中,COD除去率分别约为29.8%和67%。
[Abstract]:In order to solve the problem of alkali reduction process wastewater of polyester fabric in textile industry, acidification-precipitation and biological treatment system were used to treat the wastewater. In the acidification-sedimentation experiment, the mass concentration of TAA in wastewater was reduced from 19.8 g / L to 2.75 g / L, and the removal rate was 86%, which greatly reduced the load of the biological treatment system. However, TA in the wastewater after acidification-precipitation significantly weakened the biodegradability of bod _ 5 / COD from 0.37 ~ 0.40 to 0.27 ~ 0.31. In the biological treatment experiment, the mass concentration of influent COD was 2 109 mg / L and the effluent COD was 63.17 mg / L and 5.14 mg / L respectively, the removal rate was more than 97 mg / L, respectively. The experimental results showed that in aerobic mixed membrane bioreactor (HMBR), the biodegradable TA reached 97%, while in anaerobic hydrolytic acidification bioreactor (HABR), the biodegradable TA reached only 2.3%. At the same time, the removal rate of HABR in HABR reactor and HMBR reactor is about 29.8% and 67.8%, respectively.
【作者单位】：山西工程职业技术学院;太原理工大学化学化工学院;
【分类号】：X791

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