人造沸石和PFS去除城镇生活污水氨氮和总磷的实验研究  

Experimental Study on Removal of Ammonia Nitrogen and Total Phosphorus from Municipal Sewage by Artificial Zeolite and Polymerized Ferrous Sulfate

作　　者：吴永明[1,2] 涂勋 吴留兴 郭雨婷 李昆[1] 邓觅[1,2] WU Yongming;TU Xun;WU Liuxing;GUO Yuting;LI Kun;DENG Mi(Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,School of Resources&Environment,Nanchang University,330031;Institute of Microbiology,Jiangxi Academy of Sciences,330096;School of Civil and Architectural Engineering,Nanchang Institute of Technology,330099,Nanchang,China)

机构地区：[1]南昌大学资源与环境学院鄱阳湖环境与资源利用教育部重点实验室,330031 [2]江西省科学院微生物研究所,330096 [3]南昌工程学院土木与建筑工程学院,江西南昌330099

出　　处：《水处理技术》2024年第8期81-86,共6页Technology of Water Treatment

基　　金：江西省科技计划项目(20212BCD42014,20213AAG01012);江西省科学院省级科技计划项目包干制试点示范项目(2023YSBG21004,2021YSBG10003,2021YSBG22024)。

摘　　要：采用人造沸石和聚合硫酸铁(PFS)处理污水中氨氮和总磷,人造沸石实验采取连续进水模式,从沸石投加量、曝气量和流速(水力停留时间)多角度考察对污水中氨氮的去除,PFS实验从浓度、搅拌转速、混凝时间、沉降时间和取样深度多方面考察对污水中总磷的去除。结果表明:对于NH_(3)-N去除,单独曝气或人造沸石均效果不佳,去除率分别达10.01%±1.69%和49.49%±5.08%,但两者共同作用可极大提升去除效率,达90.55%±1.41%;水力停留时间在2.4~5.5 h范围内越长氨氮出水浓度越低,5.5 h时最低为(2.81±0.14)mg/L。对于TP去除,低浓度PFS(50、100 mg/L)表现出的去除效果不明显,去除率仅达6.62%~10.39%,至400 mg/L时去除率达89.58%±0.79%;转速110 r/min增加至205 r/min,TP去除率仅相差0.27%~3.77%;混凝时间由1 min增至10 min,去除率由52.36%±3.84%提升至87.30%±0.99%,且15 min为最佳沉降时间,之后TP质量浓度趋于平衡;不同取样深度对TP去除无较大影响;最佳实验参数组为PFS浓度400 mg/L,转速110 r/min,混凝10 min后沉降15 min,液面以下池深10%(约2 cm)处取样,出水TP质量浓度可达(0.17±0.01)mg/L,去除率达(89.58±0.79)%,明显优于GB 18918-2002一级A标准。人造沸石和PFS在城镇生活污水氮磷突发状况及深度处理,如某些工艺阶段设备突发事故导致不能运转的紧急情况或出水有深度处理需求的场合具有一定的技术研究和实际应用价值。The artificial zeolite experiments were conducted in a continuous feed mode to investigate the removal of ammonia and total phosphorus in the wastewater from multiple perspectives of zeolite dosage,aeration and flow rate (hydraulic retention time),and the PFS experiments were conducted to investigate the removal of total phosphorus in the wastewater from multiple perspectives of concentration,stirring speed,stirring time,settling time and sampling depth.The results showed that for NH_3-N removal,aeration alone or artificial zeolite were ineffective,with removal rates of10.01%±1.69%and 49.49%±5.08%,respectively,but the combined effect of both could greatly improve the removal efficiency,reaching 90.55%±1.41%;the longer the hydraulic retention time in the range of 2.4~5.5 h,the lower the concentration of ammonia nitrogen in the effluent,with the lowest at 5.5 h being For TP removal,the low concentration PFS (50,100 mg/L) showed insignificant removal effect with only 6.62%to 10.39%removal and 89.58%±0.79%removal at 400 mg/L;the difference in TP removal was only 0.27%to 3.77%when the speed increased from 110 rpm to205 r/min;The coagulation time increased from 1 min to 10 min,and the removal rate increased from 52.36%±3.84%to 87.30%±0.99%,and 15 min was the best settling time,after which the TP mass concentration tended to equilibrate;different sampling depths had no significant effect on TP removal.The best experimental parameters were PFS concentration of 400 mg/L,a rotational speed of 110 rpm,coagulation of 10 min and settling for15 min,and sampling at 10%of the pool depth (about 2 cm) below the liquid level,the effluent TP mass concentration could reach 0.17±0.01 mg/L,and the removal rate reached 89.58%±0.79%,which was obviously better than the GB 18918-2002 Class A standard.Artificial zeolite and PFS have certain technical research and practical application value in urban domestic wastewater nitrogen and phosphorus emergencies and deep treatment,such as some process stage equipment emergencies leading to

关 键 词：人造沸石 氨氮 聚合硫酸铁 总磷 城镇生活污水 

分 类 号：X703.1[环境科学与工程—环境工程]