氯酸钠抑制剂控制条件下溶解氧等对亚硝化的影响  

Effect of Dissolved Oxygen on Nitrosation Reaction under the Control of Sodium Chlorate Inhibitor

作　　者：李亚峰[1] 李佳承 张文文 邢镇岚 LI Yafeng;LI Jiacheng;ZHANG Wenwen;XING Zhenlan(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168;China Construction Science and Technology Co.Ltd.,Shenzhen Branch,Shenzhen,China,518000)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]中建科技有限公司深圳分公司,广东深圳518000

出　　处：《沈阳建筑大学学报（自然科学版）》2021年第1期179-186,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：水体污染控制与治理科技重大专项(2018ZX07601-004)。

摘　　要：目的研究在氯酸钠抑制剂控制的条件下温度、pH值、溶解氧(DO)和有机碳源对亚硝化反应的影响。方法采用自制的SBR反应器,以C/N比为1的低C/N比废水为试验水样,控制温度、pH值、DO和有机碳源,定期检测进、出水中NH4^(+)-N以及出水中NO_(2)^(-)-N和NO_(3)^(-)-N的质量浓度,分析其变化规律。结果温度、pH值、DO和有机碳源对亚硝化反应均有影响,当温度为28℃,pH=8.0,ρ(DO)=1.0 mg/L,ρ(COD_(Cr))=150 mg/L,氯酸钠抑制剂投加量为1.2 mmol/L时,NH4^(+)-N平均去除率,NO_(2)^(-)-N累积率最高。结论温度、pH值、DO和有机碳源对投加氯酸钠抑制剂的亚硝化反应有影响,在实际运行中应控制在最佳范围内,确保亚硝化工艺的高效稳定运行。Effects of temperature,pH value,dissolved oxygen(DO)and organic carbon source on nitrosation reaction was studied in self-made SBR reactor under the control of sodium chlorate inhibitor.Low C/N ratio wastewater as water sample was added in the reactor.The mass concentration of NH_(4)^(+)-N in the inflow and effluent and NO_(2)^(-)-N and NO_(3)^(-)-N in the effluent were regularly detected to be analyzed their change rule under the control of temperature,pH value,DO and organic carbon source.Results show that the nitrosation reaction is affected by temperature,pH value,DO and organic carbon source.When the temperature is 28℃and the dosage of sodium chlorate inhibitor is 1.2 mmol/L,pH=8.0,ρ(DO)=1.0 mg/L,ρ(COD Cr)=150 mg/L,average removal rate of NH_(4)^(+)-N and cumulative rate of NO_(2)^(-)-N are the highest.So in actual operation when temperature,pH value,DO and organic carbon source are controlled within the optimal range,the efficient and stable operation of the nitrosation process can be ensured.

关 键 词：亚硝化 氯酸钠抑制剂 SBR反应器 溶解氧 

分 类 号：TU991.21[建筑科学—市政工程] X703[环境科学与工程—环境工程]