摘要
为了解决低温下部分亚硝化颗粒污泥效能差的问题,利用粉煤灰的吸附能力,向SBR反应器中投加不同浓度的粉煤灰,分析其对部分亚硝化颗粒污泥性能和处理效果的影响。结果表明,在持续投加50~300 mg/L粉煤灰的过程中,随着投加量的逐渐增大,对污泥解体情况产生抑制作用,但污泥活性下降;当粉煤灰投加量达到250 mg/L时,其出水NO2--N和NH4+-N质量浓度比达到1. 20∶1,具有较好的部分亚硝化效果。低温下投加适量粉煤灰对部分亚硝化效能起到促进作用。
In order to solve the problem of poor efficiency of partial nitritated granular sludge at low temperature,based on the adsorption capacity of fly ash,different concentrations of fly ash were added to the SBR reactor to investigate its performance and water treatment effect on partial nitritated granular sludge. The results showed that during the continuous dosing of 50 to 300 mg/L fly ash,as the amount gradually increased, the sludge disintegration would be inhibited, but the sludge activity decreased. When the dosage reached 250 mg/L,the ratio of NO2--N to NH4+-N in effluent reached 1. 20 ∶ 1,which indicated a better partial nitritation effect. It could promote the nitritation efficiency at low temperature by adding an appropriate amount of fly ash.
作者
王丽媛
李行
康婷婷
Wang Liyuan;Li Hang;Kang Tingting(School of Municipal and Envrionmmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Central South Architectural Design Institute Co.Ltd.,Wuhan 430071,China)
出处
《供水技术》
2020年第2期22-25,共4页
Water Technology
基金
国家自然科学基金项目(51108277)。
关键词
部分亚硝化
低温
粉煤灰
投加量
partial nitritation
low temperature
fly ash
dosage
