聚丙烯酸酯浆料废水处理中试研究
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摘要
针对聚丙烯酸酯浆料废水高浓度难降解以及成分单一等特点,采用基于共代谢的厌氧-好氧专利反应器组合工艺的生物处理方法对其进行中试试验,重点考察反应器的启动运行特征以及反应器的性能。试验结果表明:基于提高聚酯废水占比的启动方式,该系统启动周期约为30 d;在进水化学需氧量(COD)质量浓度为1 600 mg/L时,厌氧段水力停留时间为41. 7 h,中温为(35±3)℃;在好氧段溶解氧质量浓度为3. 5 mg/L的工况下,该系统对COD平均去除率为95. 2%,最终出水各项主要指标均达到纺织染整工业水污染物排放标准,且该系统具有较强的耐负荷冲击能力。
In view of the characteristics of polyacrylate wastewater,such as high concentration,hard degradation and single component,a biological treatment method adopting an anaerobic-aerobic reactor based on co-metabolism was studied,focusing on the startup operating of and the performance of the reactor. The results show that the system operating cycle is about 30 d on the basis of increasing the ratio of polyester wastewater. Besides, under the conditions of concentration of chemical oxygen demand( COD) 1 600 mg/L,hydraulic residence time( HRT) of 41. 7 h,temperature of( 35±3) ℃and concentration of dissolved orygen( DO) 3. 5 mg/L,the average removal rate of COD is 95. 2%. The main indexes of the final effluent reaches the water pollutant emission standard of textile dyeing and finishing industry. It is also proved that the system has strong load impact resistance.
In view of the characteristics of polyacrylate wastewater,such as high concentration,hard degradation and single component,a biological treatment method adopting an anaerobic-aerobic reactor based on co-metabolism was studied,focusing on the startup operating of and the performance of the reactor. The results show that the system operating cycle is about 30 d on the basis of increasing the ratio of polyester wastewater. Besides, under the conditions of concentration of chemical oxygen demand( COD) 1 600 mg/L,hydraulic residence time( HRT) of 41. 7 h,temperature of( 35±3) ℃and concentration of dissolved orygen( DO) 3. 5 mg/L,the average removal rate of COD is 95. 2%. The main indexes of the final effluent reaches the water pollutant emission standard of textile dyeing and finishing industry. It is also proved that the system has strong load impact resistance.
引文
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[2]赵玉芬,李嘉禄,宋磊磊,等.上浆剂对国产碳化硅纤维表面及其织造性能的影响[J].纺织学报,2017,38(3):78-84.ZHAO Yufen,LI Jialu,SONG Leilei,et al. Influence of sizing agent on surface and weaving performance of Si C fibers[J]. Journal of Textile Research,2017,38(3):78-84.
[3]汪风波,陈小光,马颜雪,等.厌氧生物法处理聚丙烯酸酯浆料废水[J].中国给水排水,2017,34(13):115-119.WANG Fengbo,CHEN Xiaoguang,MA Yanxue,et al.Treatment of polyacrylate wastewater by anaerobic biological process[J]. China Water&Wastewater,2017,34(13):115-119.
[4]陈小光.一种螺旋对称流厌氧反应器:102583731A[P].2012-03-02.CHEN Xiaoguang. A spiral symmetry stream anaerobic bioreactor:102583731A[P].2012-03-02.
[5] DAI R,CHEN X,LUO Y,et al. Inhibitory effect and mechanism of azo dyes on anaerobic methanogenic wastewater treatment:can redox mediator remediate the inhibition?[J]. Water Research,2016,104:408-417.
[6] CHEN X,DAI R,XIANG X,et al. Shock resistance characteristic of a spiral symmetry stream anaerobic bioreactor.[J]. Water Science&Technology, 2016,73(4):916.
[7]陈小光.一种气升式外循环涡流旋强化生物脱氮反应器:104085986A[P].2014-10-08.CHEN Xiaoguang. Air-lift external circulation vortex enhancement nitrogen removal fluidized bed bioreactor:104085986A[P].2014-10-08.
[8]胡涛,陈小光,王玉,等.气升式外循环涡旋强化生物脱氮反应器运行特性[J].环境工程学报,2017,11(5):2723-2730.HU Tao, CHEN Xiaoguang, WANG Yu, et al.Operation characteristics of air-lift external circulation vortex enhancement nitrogen removal bioreactor[J].Chinese Journal of Environmental Engineering,2017,11(5):2723-2730.
[9]徐金兰,黄廷林,王志盈.厌氧折流板反应器处理难降解PVA废水[J].中国环境科学,2005,25(1):65-69.XU Jinlan,HUANG Tinglin,WANG Zhiying. Anaerobic baffled reactor(ABR)treatment of hardly degraded PVA wastewater[J]. China Environmental Science,2005,25(1):65-69.
[10]刘浩,王军,奚旦立.水解酸化/SMBR处理含PVA退浆废水的研究[J].中国给水排水,2007,23(21):98-101.LIU Hao,WANG Jun,XI Danli. Study on combined process of hydrolytic acidification and SMBR for treatment of PVA-containing desizing wastewater[J].China Water&Wastewater,2007,23(21):98-101.
[11]王志刚,段士然,崔双科,等.聚乙烯醇+淀粉模拟退浆废水的小试处理研究[J].西安工程大学学报,2013,27(3):354-358.WANG Zhigang,DUAN Shiran,CUI Shuangke,et al.Study on the treatment of simulated desizing wastewater with polyvinyl alcohol and starch[J]. Journal of Xi'an Poletechnic University,2013,27(3):354-358.
[12]汪林,罗轶群,张炜铭,等.高效厌氧反应器处理中药提取废水中试研究[J].工业水处理,2017,37(2):56-59.WANG Lin,LUO Yiqun,ZHANG Weiming,et al. Pilot-scale study on the highly efficient anaerobic reactor for the treatment of traditional Chinese medicine extract wastewater[J]. Industrial Water Treatment, 2017,37(2):56-59.
[13] DONG F,ZHAO Q B,ZHAO J B,et al. Monitoring the re-start-up of an upflow anaerobic sludge blanket(UASB)reactor for the treatment of a soybean processing wastewater[J]. Bioresource Technology,2010,101(6):1722-1726.
[14]许敬亮,高勇生,陈立伟,等.运行负荷对酶制剂废水厌氧颗粒污泥形成的影响[J].环境科学学报,2005,25(3):379-384.XU Jingliang,GAO Yongsheng,CHEN Liwei,et al.Effectsof organic load on the formation of anaerobic granular sludge forzymin wastewater treatment[J]. Acta Scientiae Circumstantiae,2005,25(3):379-384.