生物接触氧化工艺处理高含盐废水的研究

采用生物接触氧化法处理高含酸盐废水,考察盐浓度连续升高时对COD去除率的影响及抗冲击能力。结果表明,进水硫代硫酸钠的浓度在573~14 812 mg/L时,出水COD浓度小于500 mg/L,COD去除率91%~95%;当生物接触氧化系统受到冲击时,恢复较快,一般3~5个周期后即可恢复正常。

Study on the experiment of high salinity wastewater treatment with bio-contact oxidation system

In this paper,the process of bio-contact oxidation was used to treat the high salinity wastewater,the impact on COD removal of the system as well as the anti-impact ability when the concentration of the salinity increased in succession.The results showed that when the influent thiosulfate concentration was at 573 mg/L to 14 812 mg/L,the effluent COD concentration was less than 500 mg/L and the COD removal rate was kept at 91% to 95%.It also showed that when the bio-contact oxidation system suffered from impact,it was restored to be normal quickly,generally after 3～5 periods.