Experimental Study on the Optimal Thickness of Infiltration Media of the CRI System

Jun Min Chen; Xiao Lin Yao

doi:10.4028/www.scientific.net/AMR.415-417.1703

Paper Titles

An Investigation on the Electrochemical Cycle Stability of La_0.75−xZr_xMg_0.25Ni_3.2Co_0.2Al_0.1 (x = 0-0.2) Alloys Prepared by Melt Spinning
p.1683

Electrochemical Performance of LiFePO₄/C Positive-Electrode Material Prepared via a Rheological Phase Method
p.1689

Comparison Proximate Analysis and Heating Value between Cassava Rhizome and Perennial Wood
p.1693

Experimental Research on Hydrogen Storage Characteristics of TBAB Hydrates
p.1697

Experimental Study on the Optimal Thickness of Infiltration Media of the CRI System
p.1703

Enhanced Gaseous Hydrogen Storage Kinetics of Mg₂Ni-Type Alloys by Melt Spinning and Substituting Ni with Cu
p.1708

Preparation and Performance of Controlled-Release Tablets of Sasanquasaponin
p.1713

Capillary Adsorption of Nanostructure Carbonic Materials for Nitrobenzene in Wastewater
p.1717

Synthesis of Al-Doped Lithium Manganese Oxide from Al₂O₃-Li₂CO₃-MnO₂ Ternary System
p.1721

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Experimental Study on the Optimal Thickness of Infiltration Media of the CRI System

Abstract:

Abstract. In order to investigate the optimal thickness of infiltration media in the Constructed Rapid Infiltration System, the artificial soil column is used to simulate the Constructed Rapid Infiltration System, and the COD_Cr, NH₃-N and TN concentrations of the effluent from all the sampling sites are monitored. The experimental results and analysis show that the thickness of infiltration media exerts a significant influence on the COD_Cr, NH₃-N and TN concentration and removal efficiency of the effluent; the COD_Cr, NH₃-N and TN are mainly removed in the 0-1800mm zone of the artificial soil column; the total CODCr removal efficiency increases, as the thickness of infiltration media increases, but the CODCr removal efficiency in the 1800-2200mm zone is very low; the NH₃-N and TN removal efficiency reaches the maximum where the thickness of infiltration media is 1800mm; the NH₃-N and TN concentration of the effluent from 1800-2200mm zone dose not decrease, but increase 5-8%, due to the assimilation denitrification and amemoniation reaction on the end of the anaerobic zone; in consideration of the effluent quality, efficient biodegradation zone, construction investment, etc. the optimal thickness of infiltration media in CRI system should be 1800mm.