混凝沉淀-厌氧/好氧组合工艺处理港口含油废水的运行与优化  

Optimization of coagulation-sedimentation-anoxic-oxic combined process treating harbor oil-containing wastewater

作　　者：秦菲菲 魏燕杰[1] 李国一[1] QIN Fei-fei;WEI Yan-jie;LI Guo-yi(Tianjin Research Institute for Water Transport Engineering,Key Laboratory of Environmental Protection Technology on Water Transport,Ministry of Transport,Tianjin 300456,China)

机构地区：[1]交通运输部天津水运工程科学研究所水路交通环境保护技术交通行业重点实验室,天津300456

出　　处：《水道港口》2019年第1期113-119,共7页Journal of Waterway and Harbor

基　　金：国家科技重大专项(2017ZX07107-004-006);交通运输部科技项目(2011-329-224-330);中央级公益性科研院所基本科研业务费(TKS180401;TKS170227;TKS160215)

摘　　要：采用混凝沉淀-厌氧/好氧组合工艺处理港口含油废水。选用聚合氯化铝铁(PAFC)作为混凝剂;通过响应面法选择了最优工艺参数:pH 8.0, PAFC投加量100 mg/L沉降时间40 min;出水进入厌氧/好氧生化处理系统(A/O)。港口含油污水经过A池后,BOD/COD平均值由初始的0.17升高至0.55,可生化性增加明显。试验结果表明有机容积负荷是A/O反应器运行过程中的重要控制参数;其对A池冲击大,很容易使A池产生酸化现象,甚至导致反应器的崩溃。A池处理试验用港口含油废水的最佳有机负荷应为1.0～2.0 kgCOD/(m^3·d)。当进水水质变化时,可通过调节水力停留时间及回流比等达到反应器有效调控的目的。The coagulation-sedimentation-anoxic-oxic combined process was used to treat harbor Oil-Containing Wastewater.Polymeric aluminum ferric chloride(PAFC)was selected as coagulant,and the optimum parameters were selected by response surface methodology:pH 8,PAFC dosage 100mg/L,and settling time 40min.The effluent was introduced into anoxic-oxic biochemical treatment system(A/O).After A tank,the average value of BOD/COD increased from 0.17 to 0.55,meaning the biodegradability increased obviously.The experimental results shown that the organic volumetric load(OLR)was an important control parameter in the operation of A/O reactor,especially on A tank.It was easy to generate acidification in A tank,or even lead to the collapse of the reactor under high OLR.The optimum OLR of the A tank should be 1.0~2.0 kgCOD/(m^3·d).When the water quality is changed,the hydraulic retention time and the reflux ratio could be adjusted to achieve the purpose of effective control of the reactor.

关 键 词：港口含油废水 混凝沉淀 厌氧-好氧污水处理 工艺优化 

分 类 号：U65[交通运输工程—港口、海岸及近海工程] X52[交通运输工程—船舶与海洋工程]