五段 Bardenpho+炭吸附高效沉淀池在某产业园区污水处理中的研究

Study of Five-part Bardenpho + Carbon Adsorption Efficient Settling Tank in Wastewater Treatment of Industrial Park

摘要:

西南地区某城市家具产业城排放污水以家居业、水晶饰品与铝业废水为主。园区污水厂处理规模为6 000 m3/d，出水执行《四川省岷江、沱江流域水污染物排放标准》（DB51 2311—2016）。进水中COD_Cr、TN、F^-等含量较高（500、50、10 mg/L），尾水指标要求严苛（30、10、1.5 mg/L），为满足尾水排放需求，采用预处理+除氟初沉池+水解酸化池+五段 Bardenpho生化池+催化氧化+炭吸附高效沉淀池作为主体处理工艺。生化池综合水解、生化、沉淀3阶段的功能，集约化设计提高土地使用效率；研究了生化池增加预硝化、释氧区，高效沉淀池投加活性炭对有机物、TN、TP、F的去除效果。

Abstract:

An urban furniture industry town in the southwest region mainly produces wastewater from the home furnishing industry, crystal jewelry and aluminum industry. The scale of the wastewater treatment plant in the park is 6 000 m3/d. The effluent complies with the standards of the Min-Tuo River in Sichuan Province (DB51 2311—2016). The content of COD_Cr, TN and F ion in the influent is relatively high (500, 50, 10 mg/L). The requirements for tailwater indicators are strict (30, 10, 1.5 mg/L). To meet the requirements of tailwater discharge, the pre-treatment + defluorination primary settling tank + hydrolysis acidification tank + five-part Bardenpho biochemical tank + catalytic oxidation + carbon adsorption efficient settling tank are adopted as the main treatment processes. The hydrolysis, biochemistry and sedimentation functions of the three-part biochemical tank are integrated, and the intensive design improves the efficiency of land use. The removal effects of organic matter, TN, TP and F are explored by adding pre-nitrification and oxygen release zones to the biochemical tank and adding activated carbon to the efficient settling tank.