摘要：

以内蒙古某焦化废水处理站为案例，详细介绍了当地的气候特点、项目的建设规模和进出水水质、所采用的工艺流程以及项目在充分考虑冬季低温影响下而确定的各单元主要设计要点，并对设备保温、管路放空与保温、构筑物保温的相关设计进行了总结。实际运行结果表明：所采用的AOO+催化臭氧工艺用于处理寒冷区域焦化废水运行效果良好、稳定，即使在冬季低温影响下，强化深度处理出水中各污染物指标也能稳定达到《炼焦化学工业污染物排放标准》（GB 16171—2012）中表2规定的直接排放限值，且运行费用在可接受范围内。

关键词: AOO工艺, 催化臭氧氧化, 寒冷区域, 焦化废水

Abstract:

Taking a coking wastewater treatment plant in Inner Mongolia as a case study, this paper provided a detailed introduction to the local climate characteristics, project construction scale, inlet and outlet water quality, adopted process flow, and main design points of each unit determined by fully considering the impact of low temperatures in winter. The relevant designs of equipment insulation, pipeline venting and insulation, and structural insulation were summarized. The actual operating results showed that the AOO and catalytic ozonation process used for treating coking wastewater in cold regions had good and stable operating effects. Even under the influence of low temperatures in winter, the various pollutant indicators in the enhanced deep treatment effluent could stably reach the direct discharge limit specified in Table 2 of the “Emission Standard of Pollutants for Coking Chemical Industry”(GB 16171-2012), and the operating cost was within an acceptable range.

Key words: AOO process, catalytic ozonation, cold regions, coking wastewater

中图分类号: 

• X703