2011•Anhui nongye kexueRequires access
Research on the Wastewater Treatment in Artificial Construction Wetland
Yu Xue
Open publisher page 0 citations
Abstract
[Objective] The technical parameter in the system of the wastewater treatment in artificial construction wetland was improved for its optimization.[Method] The way of the oxygen-adding through the traditional method of intermittent water-inletting was improved with the hang through the wetland oxygen on the series of two vertical-flowing wetlands.The content of dissolved oxygen within the aerobic wetland remained in the range of 3-4 mg/L by means of the technique of aerating oxygen.The effect of different recirculation ratios(0,1∶1,2∶1,3∶1 or 5∶1) on the treatment of artificial construction wetland was studied.[Result] The removal efficiency on COD,NH3-N and TN in the vertical-flowing wetland reached the Grade A of sewage discharge standard among which,the different recirculation ratio greatly affected removal efficiency on TN and the best removal efficiency(82.5%) on TN was at the recirculation ratio of 2∶1.However,the effect of the experimental installation on TP removal was bad,thus,in order to improve the TP removal efficiency,the matrix material with stronger ability in absorption could be adopted in the construction of wetland.[Conclusion] The construction of vertical-flowing wetland had good application prospect in the wastewater treatment.