RPIR反应器结合加压生化工艺处理难降解有机废水

RPIR Bioreactor Combined with Bioreactor Consisting of Pressurized Aeration and Dissolved Air Flotation for Refractory Organic Wastewater Treatment

反应沉淀一体式矩形环流生物反应器(简称RPIR反应器)具有污泥自动回流的特点,可以维持较高浓度的活性污泥和保持较强的抗冲击性能力。常温下,采用RPIR工艺和加压溶气生化气浮反应器处理深圳市某危废站的难降解有机污染物废水,日处理水量为300 m3/d,废水处理工艺为"A/O+A/O"。结果显示,稳定运行后,系统最终出水的COD和NH3-N分别降至250 mg/L、15 mg/L及以下,COD的去除率达80.3%~94.3%,NH3-N的去除率达45.5%~81.1%。

High- concentration acclimation of activated sludge and stronger - ability of impact resistance could beachieved by the Reaction and Precipitation Integrated Rectangular Airlift Loop bioreactor （namely RPIR）, which had thefunction of automatic sludge circulation. Combined with the bioreactor consisting of pressurized aeration and dissolved airflotation, the RPIR reactor was conducted to the treatment for persistent organic pollutant wastewater in Shenzhen. Thetechnology fabricated by “A-O-A-O冶 could deal with the 300 tons of daily wastewater. The operation date demonstratedthat the effluent COD and NH3-N were achieved at 250 mg / L, 15 mg / L below, respectively. The removal rate for CODwas 80. 3% .- 94. 3%, and the removal rate for NH3-N was 45. 5% .- 81. 1%.