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| 1 | 零价铝还原处理偶氮染料活性蓝222废水显示文摘为有效处理难生物降解的碱性偶氮染料废水,以典型偶氮染料RB222(活性蓝222)为处理对象,在碱性条件下直接采用零价铝进行还原处理,并系统评价了溶液p H、反应温度以及零价铝粉投加量等因素对偶氮染料分子降解效果的影响.结果表明:随着p H从7.00增至12.00,脱色率从62.6%升至98.4%;零价铝粉投加量从5 g/L增至50 g/L,脱色率从90.8%升至98.8%.零价铝还原处理偶氮染料最优条件:温度为60~80℃,零价铝粉投加量为10~25 g/L,体系p H为11.在该条件下,经过2 h处理,脱色率超过99%,溶液可生化性〔ρ(BOD5)/ρ(CODCr)〕从0.169升至0.386,易于后续生化处理.电喷雾电离质谱(ESIMS)和傅立叶变换红外线光谱分析仪(FTIR)分析表明,偶氮染料中—NN—(偶氮键)被破坏,还原产物中有苯胺类小分子.根据试验结果推测偶氮染料的还原路径:水中的质子接受零价铝表面的电子生成活性氢,活性氢攻击—NN—,将偶氮化合物还原裂解成易于生物降解的苯胺类小分子物质.通过处理江苏某地所取得的实际印染废水,废水的可生化性从0.126升至0.388,提高明显. | 袁超 李磊 孙应龙 王邦达 徐辉 王毅 | 2016 | 环境科学研究2016，29，7： | 11 |
| 2 | 不同晶型铁氧化物Fenton和UV-Fenton降解橙Ⅱ的催化性能显示文摘选取了磁铁矿、赤铁矿和针铁矿3种不同晶型的铁氧化物,用XRD和BET进行了表征。将3种铁氧化物作为催化剂用于Fenton和UV-Fenton(254 nm UVC)降解偶氮染料橙II,测定了染料降解过程中溶液中铁离子浓度的变化规律,用于分析3种铁氧化物的催化过程。用单位比表面积反应速率常数(k/Ssur)评价了3种铁氧化物UV-Fenton催化降解橙Ⅱ的能力,以揭示UV-Fenton体系中铁氧化物晶型与催化性能的关系。结果表明,Fenton体系中,磁铁矿能通过表面固有的2价铁催化产生羟基自由基降解橙Ⅱ,其催化能力高于针铁矿和赤铁矿;UV-Fenton体系中,磁铁矿、赤铁矿和针铁矿催化降解橙Ⅱ的单位比表面积反应速率常数分别为0.048 8 g/(m2·min)、0.023 4 g/(m2·min)和0.001 0 g/(m2·min),可见磁铁矿的催化能力明显高于针铁矿和赤铁矿;UV-Fenton体系中,磁铁矿以多相反应为主,针铁矿以均相反应为主,而赤铁矿则是两者共同作用。研究表明,磁铁矿是多相铁氧化物UV-Fenton催化剂的理想晶型,同时也是合成新型多相光助-芬顿催化剂理想的活性组分。 | 徐淑英 陈建新 王琳 蒋柏泉 龚娴 | 2017 | 安全与环境学报2017，17，4： | 7 |
| 3 | 铁炭微电解强化水解酸化反应器高效处理聚乙烯醇废水显示文摘以聚乙烯醇(PVA)退浆废水为研究对象,构建了铁炭微电解强化厌氧生物处理的废水处理系统,对比研究了不同负荷条件下常规水解酸化反应器(R1,无铁炭材料)和铁炭耦合厌氧水解酸化反应器(R2,有铁炭材料)对PVA退浆废水的去除效果、颗粒污泥特性(胞外聚合物(EPS))、挥发性脂肪酸(VFAs)组成及微生物群落结构的差异。结果表明:R2出水平均COD去除率和平均PVA去除率分别稳定在86.8%和75.8%,均优于R1;添加铁炭材料可促进丙酸、丁酸转化成乙酸,提高了乙酸产量;R2颗粒污泥紧密黏附EPS(TB-EPS)、松散附着EPS(LB-EPS)含量较R1有所增加,颗粒污泥结构得到优化。高通量测序结果表明,添加铁炭对水解酸化菌群有显著影响,Propionibacteriaceae、Clostridium sensu stricto 12在PVA的降解中起重要作用。综合上述结果,铁炭微电解可有效强化水解酸化反应器对PVA退浆废水的处理效果,研究结果可为厌氧生物法处理PVA退浆废水提供参考。 | 张晓冉 徐辉 杨波 李方 沈忱思 柳建设 刘艳彪 | 2020 | 环境工程学报2020，14，7： | 4 |
| 4 | 零价铁及其复合工艺降解印染废水的应用研究显示文摘印染废水因具有高色度、高有机物浓度、难生物降解的独特性质,一直是国内外环境领域关注的重要水体污染源之一。零价铁由于其独特的性质,已成为国内外研究处理印染废水的主要方向之一。介绍了零价铁的研究现状,分析了零价铁降解印染废水的作用机理、动力学及影响因素,着重介绍了近几年新兴的几种零价铁与其他水处理技术联用的复合工艺对印染废水的降解作用。最后,对现存的一些技术问题进行了讨论。 | 田国壮 李攀 于水利 | 2015 | 工业水处理2015，35，2： | 4 |
| 5 | Fe^0/荧光假单胞菌联合处理直接耐晒黑的脱色特性显示文摘采用荧光假单胞菌(Pseudomonas fluorescen,简称pf菌)与Fe0微粒构建Fe0/pf菌联合体系,处理了含偶氮类染料-直接耐晒黑(C.I.Directblack19,简称DB19)废水.在中温((35±2)℃)条件下,比较了纯pf菌、纯Fe0微粒和Fe0/pf菌联合体系的脱色能力,并探讨了联合体系中供氧条件、初始pH值、Fe0投加量和染料初始浓度等因素对DB19脱色的影响.结果表明,在微需氧、菌接种量为5%(体积比)的条件下,染料初始浓度为100mg·L-1、初始pH=7.0、Fe0投加量为500mg·L-1时,联合体系内脱氢酶活性最高,处理约30h后可实现90%以上的脱色率;与纯pf菌比较,Fe0/pf菌联合体系达到该脱色率的时间可提前约40h.UV-vis和FT-IR光谱分析表明,联合体系中DB19染料的脱色过程是通过偶氮键断裂来实现的,而且部分含苯环或萘环结构的中间产物也可被降解. | 肖利平 郭燕 邓志毅 江栋 刘永 | 2013 | 环境科学学报2013，33，9： | 3 |
| 6 | 垃圾渗滤液的零价铁强化厌氧处理技术显示文摘该文采用零价铁强化中转站垃圾渗滤液的厌氧处理方法,考察了进水浓度、初始pH和铁投加量对渗滤渡污染物的去除效果,并探讨了零价铁强化厌氧处理机理。结果表明零价铁的投加可有效强化渗滤液的厌氧处理效果,在进水浓度为22656 mg/L、初始pH为7.0、铁投加量为600 mg/L的最佳条件下,经过50 d厌氧处理,出水CODCr降低至7 800 mg/L,COD去除率为65.1%。而未投加铁的体系出水CODCr为11 560 mg/L,COD去除率为48.2%。 | 张鑫 朱南文 楼紫阳 袁海平 王艳 | 2013 | 净水技术2013，32，4： | 3 |
| 7 | Anaerobic-aerobic processes for the treatment of textile dyeing wastewater containing three commercial reactive azo dyes:Effect of number of stages and bioreactor type显示文摘In this study,the effect of number of stages and bioreactor type on the removal performance of a sequential anaerobic-aerobic process employing activated sludge for the treatment of a simulated textile dyeing wastewater containing three commercial reactive azo dyes was considered.Two stage processes performed better than one stage ones,both in terms of overall organic and color removal,as well as the higher contribution of anaerobic stage to the overall removal performance,thereby making them a more energy efficient option.The employment of a moving bed sequencing batch biofilm reactor,which uses both suspended and attached biomass,for the implementation of the anaerobic stage of the process,was compared with a sequencing batch reactor that only employs suspended biomass.The results showed that,although there was no meaningful difference in biomass concentration between the two bioreactors,the latter reactor had better performance in terms of chemical oxygen demand(COD)removal efficiency and rate and color removal rate.Further exploratory tests revealed a difference between the roles of suspended and attached bacterial populations,with the former yielding better color removal whilst the latter had better COD removal performance.The sequential anaerobic–aerobic process,employing an aerobic membrane bioreactor in the aerobic stage resulted in COD and color removal of 77.1±7.9%and 79.9±1.5%,respectively.The incomplete COD and color removal was attributed to the presence of soluble microbial products in the effluent and the autoxidation of dye reduction metabolites,respectively.Also,aerobic partial mineralization of the dye reduction metabolites,was experimentally observed. | Banafsheh Azimi Elham Abdollahzadeh-Sharghi Babak Bonakdarpour | 2021 | Chinese Journal of Chemical Engineering2021，34，11： | 1 |
| 8 | Enhancing anoxic denitrification of low C/N ratio wastewater with novel ZVI composite carriers显示文摘External organic carbon sources are needed to provide electron donors for the denitrification of wastewater with a low COD/NO_(3)^(-)-N(C/N)ratio,increasing the treatment cost.The economic strategy is to enhance the bioactivity and/or biodiversity of denitrifiers to efficiently utilize organic substances in wastewater.In this study,novel zero-valent iron(ZVI)composite carriers were prepared and implemented in a suspended carrier biofilm reactor to enhance the bioactivity and/or biodiversity of denitrifiers.At the influent C/N ratio of 4(COD was 179.5±5.0 mg/L and TN was 44.2±0.8 mg/L),COD and TN removal efficiencies were 85.1%and 66.4%,respectively,in the reactors filled with 3 wt%ZVI composite carriers.In contrast,COD and TN removal efficiencies were 70.4%and 55.3%,respectively,in the reactor filled with conventional high-density polyethylene(HDPE)biofilm carriers.The biofilm formation on the 3 wt%ZVI composite carriers was optimized due to its higher roughness(surface square roughness increased from 76.0 nm to 93.8 nm)and favorable hydrophilicity(water contact angle dropped to 72.5°±1.4°from 94.3°±3.2°)compared with the HDPE biofilm carriers.In addition,heterotrophic denitrifiers,Thauera and Dechloromonas,were enriched,whereas autotrophic denitrifiers,Raoultella and Thiobacillus,exhibited high relative abundance in the biofilm of ZVI composite carriers.The coexistence of heterotrophic denitrifiers and autotrophic denitrifiers on the surface of ZVI composite carriers provided mixotrophic metabolism of denitrification(including heterotrophic and iron-based autotrophic),thereby ensuring effective denitrification for wastewater with a low C/N ratio without external organic carbon source addition. | Yanping Shi Tao Liu Hongtao Yu Xie Quan | 2022 | Journal of Environmental Sciences2022，34，2： | 1 |
| 9 | 微电场-零价铁-UBF提高有机硫对位酯生产废水同步产甲烷反硝化效能显示文摘有机硫化合物对位酯生产废水具有COD高、含硫酸盐和有机硫高以及碳硫比低的特点,针对单一厌氧反应器在处理废水时只能在较低COD容积负荷(OLR)下运行的问题,在提高有机硫对位脂生产废水产甲烷反硝化效能的基础上,采用微电场-零价铁联合方式处理该类废水。实验结果表明:OLR(以COD计)为6.67 g·(L·d)^-1,进水COD为20000 mg·L^-1时,复合床的COD去除率为70%,产甲烷率为1.41 L·(L·d)^-1,反硝化率为87%,对位脂降解率为74%;在COD/TSO^2-4(总硫酸盐)为1.57时,COD去除率、产甲烷率和反硝化率可分别能稳定在60%、1.18 L·(L·d)^-1和79%;在COD/TSO^2-4为0.88时,产甲烷菌受到中等程度的抑制;当COD/TSO^2-4恢复为1.57时,厌氧系统在7 d后恢复,说明联合系统有很强的恢复能力。综合上述结果,与单一的UBF处理相比,采用微电场-零价铁能显著提高UBF的运行负荷和同步产甲烷反硝化能力,同时也能使反应器承受更低的碳硫比。 | 郭进 水远敏 万佩佩 李伟成 高迎新 戚伟康 | 2020 | 环境工程学报2020，14，8： | 0 |
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