Mahdavi Talarposhti A, Donnelly T, Anderson G K
Environmental Engineering Group, Department of Civil Engineering, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK.
Water Res. 2001 Feb;35(2):425-32. doi: 10.1016/s0043-1354(00)00280-3.
In recent years, rapid technological advances in the textile and dyeing industry have yielded benefits to society but have also generated new and significant environmental problems. The treatment alternatives applicable for the removal of colour vary, depending upon the type of dye wastewater. A synthetic, simulated mixed dye waste (Basic Yellow 28, Basic Yellow 21, Basic Red 18.1, Basic Violet Red 16, Basic Red 46, Basic Blue 16, Basic Blue 41) representing a known waste from a fibre production factory, was investigated. The biological process of anaerobic digestion has been recognised as a simple and energy-efficient means of treating and stabilising a wide range of organic industrial wastewaters. This study sets out to demonstrate the effect of different loading rates, dye concentrations and hydraulic retention times (HRTs) on colour removal efficiency under mesophilic anaerobic conditions. The reactor was operated under mesophilic conditions at different organic loading rates (OLRs) and HRTs for nine months. The results of this study show that a 2-stage mesophilic anaerobic up-flow packed bed reactor can remove up to 90% of the colour from a mixed cationic dye containing 1000 mg/l of dye. Colour removal efficiency falls as the influent dye concentration increases, but rises with increased hydraulic retention time and increased organic loading. The primary colour removal mechanism was one of biosorption with subsequent biodegradation. Acetoclastic methanogens were moderately inhibited at low organic loading rates of 0.25 kg COD/m3 d, at which level, acidogenesis and acetogenesis appeared to be unaffected. Inhibition of acidogenesis became marked at higher OLRs (1 kg COD/m3 d) and when the HRT was reduced from 5 to 3 days.
近年来，纺织印染行业的技术飞速发展，在给社会带来益处的同时，也引发了新的重大环境问题。适用于去除颜色的处理方法因染料废水的类型而异。研究了一种模拟合成混合染料废水（碱性黄28、碱性黄21、碱性红18.1、碱性紫红16、碱性红46、碱性蓝16、碱性蓝41），它代表了纤维生产厂的一种已知废水。厌氧消化的生物过程已被公认为是处理和稳定各种有机工业废水的一种简单且节能的方法。本研究旨在证明在中温厌氧条件下，不同的负荷率、染料浓度和水力停留时间（HRT）对脱色效率的影响。该反应器在不同的有机负荷率（OLR）和HRT下于中温条件下运行了九个月。本研究结果表明，两级中温厌氧上流式填充床反应器能够从含有1000mg/l染料的混合阳离子染料中去除高达90%的颜色。脱色效率随着进水染料浓度的增加而降低，但随着水力停留时间的增加和有机负荷的增加而提高。主要的脱色机制是生物吸附随后进行生物降解。在0.25kg COD/m³·d的低有机负荷率下，乙酸型产甲烷菌受到中度抑制，在此水平下，产酸作用和产乙酸作用似乎未受影响。在较高的OLR（1kg COD/m³·d）以及HRT从5天减少到3天时，产酸作用的抑制变得明显。
