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天津爱普生有限公司油墨废水处理工艺设计 DESIGN OF INK WASTEWATER TREATMENT PROCESS FOR TIANJIN

EPSON CO., ITD.

专 业：环境工程 姓 名：路浩 指导教师姓名： 申请学位级别：学士

论文提交日期：2012年6月10日 学位授予单位：天津科技大学

摘要

油墨废水是一种污染大、难处理的废水，其主要污染物为油性墨、水性墨、淀粉颗粒及微量不溶性杂质。油墨废水的特点为油污含量高，COD含量高，色度高，难生物降解。这种废水如果不加治理，会对环境和人类造成极大危害。

本设计采用水解酸化法和生物接触氧化法综合处理油墨废水。利用生物接触氧化技术，池内生物固体量多，充氧条件好，故可以很大程度地去除水中的COD。由于油墨废水中含有大量难降解有机物，所以用水解酸化法能很好的提高废水的可生化性，解决了传统生物法不能处理难降解有机物的问题，大大提高了处理效率。

本设计选用的处理工艺为：首先通过格栅进行大颗粒物拦截，然后通过集水池调节废水流量和pH值，再通过提升泵进入水解酸化池进行初步处理，进入生物接触氧化池去除大量COD，最后经消毒池，出水达到国家油墨废水一级排放标准（GB25463-2010）。污泥进入污泥浓缩池，经压滤机浓缩处理后干泥外运。本设计对采用的各主要构筑物、污泥处理系统等进行了选型设计与计算，并绘制了工艺流程图等相关图纸。

关键词：油墨废水；废水处理；水解酸化；生物接触氧化技术

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ABSTRACT

Ink wastewater, a type of wastewater with high contamination and difficulty to treat, characterized by high oil content, high COD, deep color and refractory to biodegradation, contains oily ink, aqueous ink, starch granule and marginala in soluble impurities. Humans and whole environment would be greatly jeopardized if the ink wastewater is not treated.

Ink wastewater will be comprehensively treated through hydrolytic acidification and bio-contact oxidation process in this design. It uses bio-contact oxidation technique, with high bio matter and great oxygen filling conditions, to deeply remove COD in wastewater. Because of amounts of non-biodegradable organics in ink wastewater, bio-contact oxidation can make non-biodegradable ones became biodegradable ones and solve the problem that traditional bio filter process is hard to remove non-biodegradable organics, greatly improving the efficiency of treatment.

The treatment technology of this design reads as follows. First at all, before the flow of wastewater and pH are adjusted through collecting tank, the grille will block large particles. In the second place, the wastewater will be preliminarily treated in hydrolytic acidification pond from the house of lift pump, and then it is deeply treated in bio-contact oxidation pond. Finally, the wastewater enters into sedimentation tank to subside and reach the first-level of the ink wastewater pollutant discharge standards (GB25463-2010). The sludge enters into the sludge concentration pool and it is shipped out after the concentration processing through the pressure filter. The main structure, the sludge treatment, etc. are devised and calculated in this design and the relevant drawings such as the flow diagram for process are drafted also.

Keywords: Ink wastewater; Wastewater treatment; Hydrolytic acidification; Bio-contact oxidation technique

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