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曹瑞钰, 付见中 (同济大学环保产品质量监督检验中心,上海200092) : 通过多年的研究和模拟试验,提出了加装前后导流板的措施以改善氧化沟的流速分布,消除目前氧化沟所存在的通病———池底积泥现象,而且很直观地给出了安装导流板前后的氧化沟各断面流速分布图。另外,还就目前氧化沟的设计和建造中出现的问题提出了相关的建议。 : 氧化沟; 积泥; 流速分布; 导流板:X505 :A :1000-4602(2001)-02-0016-03MeasuresforImprovingVelocityDistributioninOxidationDitchCAORui-yu, FUJian-zhong (QualitySupervisionandExaminationCenterforEnviron.ProtectionProducts,TongjiUniv.,Shanghai200092,China) Abstract: Velocitydistributioninoxidationditchcanbeimprovedbyinstallingfrontbaffleandbackbafflebasedonresearchesandsimulationtests,sothatsludgedepositinthebottomofoxidationditchcanbeeliminated.Thevelocitydistributiondiagramsofdifferentcross-sectionbeforeandafterinstallingthebafflesarepresentedinthispaper.Moreoverrelatedsuggestionontheproblemsappearedindesignandconstructionofoxidationditchisalsogiven. Keywords: oxidationditch; sludgedeposit; velocitydistribution; baffle (TNO)(A·Pasveer)1954(voor—shopen),。1975,558;1976,90;80,。:① ,,;② ,—;③ ,、;④ ,、;⑤ ,;⑥ 。,,。1 氧化沟流速分布的现状,,。,0.15m/s,0.3~0.5m/s。·16· 2001Vol.17 CHINAWATER&WASTEWATER No.2,250~300mm,480~530mm。(3.0~3.6m),1/10~1/12,1/6~1/7,(0.8~1.2m,),(2/33/4,),(≥1.0m),,,。(1),7.0m,3.5m,、1。1 1 m/s(m) 1-12-23-34-40.51.050.490.630.701.00.770.410.440.491.50.630.280.380.292.00.330.170.190.212.50.210.120.100.123.00.12———3.5———— 1,3.0m。,3m,2.0m,1m。2 改善氧化沟流速分布措施的研究,,,:、,,。,。,,,。,、,,。,、(),,。:①1/5,()4.0m,,②1/5,()3.0m,60°(、),,。17.0m,D=8.0m,4.0m,59.12m,46.56m,4.0m,3.0m。,16(2)。2 ,、2~5。2 m/s(m)0.51.01.52.02.53.01-10.700.550.330.120.070.042-20.700.340.220.190.230.243-30.530.360.240.240.220.264-40.690.570.570.500.270.17·17·2001Vol.17 No.23 m/s(m)0.51.01.52.02.53.01-10.120.160.240.420.550.582-20.320.190.120.240.290.373-30.180.240.320.430.430.444-40.590.530.500.390.360.144 、 m/s(m)0.51.01.52.02.53.01-10.140.160.190.270.430.552-20.290.190.230.190.210.213-30.180.210.280.310.380.394-40.170.280.450.480.530.555 [kgO2/(ds·h)]1.431.62、1.74 ,,1-1(0.5m)0.7m/s,(3.0m)0.04m/s,0.15m/s,;,1-10.12m/s,0.58m/s;、,1-10.14m/s,0.55m/s,0.3m/s,,,。,1-1,4-4,,,。,。,,,。,、,。3 结论和看法① 、、。()4.0m(),1/5~1/6,;()3.0m。,。② ,,。③ 3.0~3.5m,3.0m。(4.0m6.0m):a.、,,;b.,。3.0m,[2]:“7.0m,1~2m。”,、,。④ ,,,();,,。⑤ ,、;,、,,。:[1] .[M].:,1992.[2]G,A.OxidationDitchesinWastewaterTreatment[M]..:,1998.:(1944- ),,,、。:(021)65982685:2000-10-09·18·2001Vol.17 No.2
本文标题:改善氧化沟流速分布的措施曹瑞钰
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