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内循环三相厌氧生物流化床降解精对苯二甲酸废水的研究 被引量:5

Degradation of PTA wastewater in a internal loop three phase anaerobic fluidized bed reactor
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摘要 以火山岩为载体,制作了内循环式厌氧生物流化床,通过好氧预挂膜、快速排泥、逐步提高负荷法启动,启动时间约47 d。运行稳定后,当精对苯二甲酸(PTA)废水的COD为(4 752.3±41.2)mg/L时,在水力停留时间(HRT)为(17.3±1.2)h、有机负荷(OLR)为6.5kg COD/(m3.d)条件下,COD去除率达(64.0±4.4)%,对苯二甲酸(TA)去除率达(65.1±1.3)%,生物膜量达(13.3±0.2)mgVSS/g载体。对载体进行扫描电镜分析(SEM)得知,载体内为封闭孔,厌氧生物主要生长于载体表面孔内。观测产量为Yobs0.057gVSS/g COD,载体生物基质利用速率为0.83g COD/(gVSSd)。 Using lava rock as carrier, the anaerobic bi-oreactor is set up with the method of aerobic precoating treatment of carrier and rapid clean up of sludge. The start-up phase is 47 days. In the operation perlod,when the COD of PTA wastewater is (4 752. 3±41.2) mg/L,the HRT of the AFBR is ( 17.3±1.2) hours and the organic loading rate (OLR)is 6. 5 kgCOD/(m^3 .d) ,the COD removal rate and TA removal rate are (64. 0±4.4)% and (65.1±s 1.3)%, respectively. The biomass on the carrier is ( 13.3±0. 2) mg VSS/g carrier. Analysed by scanning electron microscope (SEM) ,the interior pores of the lava rock is hermetic and the anaerobes is mainly grown in the pores of exterior surface. The observed sludge yield ( Yobs ) is 0. 057 g VSS/g removal COD and the carrier substrate utilization is 0. 83 g removal COD/(g VSSd).
出处 《现代化工》 CAS CSCD 北大核心 2011年第6期74-77,79,共5页 Modern Chemical Industry
基金 国家"863"计划项目(2009AA05Z313) 国家自然科学基金项目(50872052) 国家水专项(2008ZX07101-003) 江苏省环保厅项目(2009002) 江苏省科技厅资助项目(BE2010196)
关键词 厌氧流化床 精对苯二甲酸 火山岩 SEM 水力停留时间 AFBR PTA lava rock SEM HRT
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