Preparation and Adsorption Characteristics Analysis on Carbonized Controlled-release Substance of Phosphorus Removal
LI Zhaoxin
ZHOU Xue
HUANG Bingbin
ZHAO Lixin
HU Xiulin
Abstract：Two kinds of substrates,carbonize slow-release Ca (OH) 2 (substrate 1#) and ferric salt modified Ca (OH)2 (substrate 2#),which used for artificial wetlands' dephosphorization were prepared.These substrates were compared with commonly used engineering materials,limestone and sand,by isothermal adsorption contrasting experiments for phosphorus removal efficiency.Through the experiments found that substrate 1# and substrate 2# adsorption data was well correlated by the Langmuir isotherm adsorption.The theoretic phosphorus saturation adsorption capacity was 806.45 mg/kg (substrate 1#),220.26 mg/kg (substrate 2#),64.10 mg/kg (limestone) and 24.81 mg/kg (sand) respectively.The results showed that substrate 1# and substrate 2# have effective phosphorus removal efficiency.Comparing with the commonly used artificial wetland substrates,substrate 1# and substrate 2# have obvious application advantages,can be used to improve the phosphorus removal effect in artificial wetland.
Keywords：substance of phosphorus removalartificial wetlandisothermal adsorption
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 49-53 )