This paper introduces the current status and developments of the typical treatment technologies of dyeing and printing wastewater ( dpw ) , including physical - chemical , chemical , and microbial processes with focuses on the mechanism , result of treatment , and merits and drawbacks of each process 摘要介绍了各种印染废水处理的方法：物理化学法、化学法及生物技术法，分析了各类技术方法的机制、处理效果及其优缺点。
Abstract : the less - biodegradable printing and dyeing wastewater has been pretreated by an iron chipping - filtration process . the results indicate that the pretreatment process can improve biodegradability of the wastewater and reduce cod and colority , resulting in the benefit to the follow - up biological treatment 文摘:采用铁屑过滤法预处理可生化性差的印染废水，能改善废水的可生化性，降低废水的cod和色度，有利于后续生化处理。
This text introduced the common method of printing and dyeing wastewater treatment - the biology tangency oxidizes method , expatiated on its mechanism and characteristic , emphases introduced pivotal techniques of industry application process including pretreatment , filling , puff machine 摘要文章介绍了印染废水处理的一种常用方法生物接触氧化法，阐述了其机理、特点，对其工业应用过程中的关键技术包括预处理、填料选用和曝气器作了重点说明。
Based on the existing state of printing - dye industrial wastewater treatment projects , this paper put forward that attention should be paid to the process design of projects . analysis and discussion were made on the three points to be considered in the design of printing - dye industrial wastewater treatment projects 结合印染工业废水处理工程现状,提出应重视印染废水处理工程的工艺设计,分析讨论了在印染工业废水处理工程设计中要引起注意的三个方面问题。
The features of the dyeing wastewaters and the status quo of the treatment are presented , and a review is given for the mineral and org . macromol . coagulators , as well as the bio - enzymes , such as their synthetic ways , chem . modifications , and application progress in dyeing / printing wastewater treatment 摘要介绍了印染废水的特点和处理现状，综述了无机和有机高分子絮凝剂、天然高分子絮凝剂和生物酶的合成途径、化学改性方法及其在印染废水处理中的应用进展。
A traditional printing and dyeing wastewater treatment process was improved . added the fe - c tank and coagulation tank , the aeration tank was changed into a contact oxidation tank , in which the diffent function of micro - bacteria was formed along the vertical of aerations . the removal ratios of cod 、 ss 、 bod5and chromaticity were increased by 19 . 7 % 、 14 . 5 % 、 9 . 3 % and 18 . 6 % respectively , which reached the national discharge standards 根据某厂印染废水的特点,在原有处理工艺的基础上进行了改造,在池内形成了合理的微生物分布,大大改善了出水水质,使cod 、 ss 、 bod5和色度的去除率分别提高了17 . 1 % 、 14 . 4 % 、 9 . 2 % 、 19 . 5 % ,达到了废水排放标准的要求。
