Abstract:

Advanced oxidation technology,domestic sewage dilution,and aerobic technique combined technology have been applied to the modification project of a wastewater treatment plant for 2-nitro-paracresol production. In the wastewater,its pH is low and salinity is high. The operation results show that benzene ring in the wastewater containing 2-nitro-paracresol could effectively be broken and improve the biodegradability of the wastewater,when the addition of H₂O₂ is 5 kg/t and FeSO₄·7H₂O 6.8 kg/t. When HRT of UASB is 1.4 d,anoxia 1 d,and aerobic 1 d, the effluent COD of the pretreated wastewater is below 500 mg/L,reaching Level A standard specified in the Wastewater Quality Standards for Discharge to Municipal Sewers(CJ 343—2010)

Key words: 2-nitro-paracresol wastewater, advanced oxidation, fluidized bed, modification, engineering design

摘要：

将高级氧化技术、生活污水稀释与厌氧、好氧技术组合工艺应用于低pH、高含盐的含邻硝基对甲酚废水处理站改造工程，运行结果表明，当H₂O₂添加量为5 kg/t，FeSO₄·7H₂O的添加量为6.8 kg/t时可对含邻硝基对甲酚废水中的苯环有效断链，提高废水的可生化性。预处理后的废水在UASB停留时间1.4 d，缺氧、好氧停留时间均为1 d时，出水COD<500 mg/L，达到《污水排入城镇下水道水质标准》（CJ 343—2010）中A等级的标准。

关键词: 邻硝基对甲酚废水, 高级氧化, 流化床, 改造, 工程设计

CLC Number: 

• X703