摘要：

浙江某印染集聚提升园区废水集中处理设施建设规模30 000 m³/d，针对园区废水特点，采用主体工艺为“调节池+冷却系统+反应初沉池+厌氧水解池+A/O生化池+二沉池+高效沉淀池”的组合工艺对其进行处理。运行结果表明，该工艺稳定高效，当进水平均COD、BOD₅、总锑分别为1 370、360、1.17 mg/L时，处理后出水平均COD、BOD₅、总锑分别降至88、7.4、0.049 mg/L，对应去除率分别达到94%、98%、96%，出水符合《纺织染整工业水污染物排放标准》（GB 4287—2012）表2间接排放要求。工程采用了混凝药剂强化的初沉工艺，实现了有效的废水碳捕集，间接对外输出能源，有利于减少碳排放，其主要处理单元采用集约化组合及深池型设计，节省占地，可为占地受限型废水处理厂的建设提供参考。

关键词: 印染集聚提升园区, 印染废水, 集中处理, 总锑, 碳捕集

Abstract:

The construction scale of a wastewater centralized treatment facility in a printing and dyeing cluster improvement park in Zhejiang Province was 30 000m³/d. According to the characteristics of wastewater in the park, the main process of “regulation tank+cooling system+reaction initial sedimentation tank+anaerobic hydrolysis tank+A/O biochemical tank+secondary sedimentation tank+high-efficiency sedimentation tank” was adopted. The results showed that the process was stable and efficient. When the average COD, BOD₅, and total antimony in the influent were 1 370, 360 and 1.17 mg/L, the COD, BOD₅, and total antimony in effluent were respectively reduced to 88, 7.4, and 0.049 mg/L, with the corresponding removal rates of 94%, 98% and 96%. The effluent met the indirect discharge requirements in Table 2 of “Discharge Standards of Water Pollutants for Dyeing and Finishing of Textile Industry”(GB 4287-2012). The project adopted a coagulation agent enhanced initial sedimentation process to achieve effective carbon capture of wastewater and indirectly export energy, which was conducive to the reduction of carbon emissions. The main treatment unit adopted intensive combination and deep pool design to save land, which could be used as a reference for land limited wastewater plants.

Key words: printing and dyeing agglomeration improvement zone, printing and dyeing wastewater, centralized treatment, total antimony, carbon capture

中图分类号: 

• X703.1