Open AccessExperimental Study on CRI Technology in the Degradation of COD in Wastewater Reuse
Author(s) -
Pengshuai Qiao
Publication year - 2014
Publication title -
the open fuels and energy science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.12
H-Index - 11
ISSN - 1876-973X
DOI - 10.2174/1876973x01407010135
Subject(s) - wastewater , reuse , environmental science , nitrogen , environmental engineering , degradation (telecommunications) , column (typography) , infiltration (hvac) , pulp and paper industry , waste management , chemistry , mathematics , engineering , materials science , composite material , telecommunications , organic chemistry , connection (principal bundle) , geometry
With the improvement of the urbanization level, the mixed city water has surged and the traditionaldenitrogenating cost in the course of wastewater reuse has been unbearable. This experiment used the technology of theconstructed rapid infiltration (CRI) and applied the soil column simulation method in the laboratory. The results show thatnitrogen removal rates of two soil columns are 73.73% - 75.54%, 66.70% - 77.81% and 79.33% - 73.08% under three wet/dry (3 h/9 h, 6h/18 h, 8 h/40 h) ratios conditions, individually. The same soil column with the same wet/ dry ratio has ahigher ammonia nitrogen removal rate within a shorter operation time. The comparison result of experiments show thatthe artificial soil mixture ratio in column 2 is better than that of column 1, arriving at the optimum operation conditions ofthe system.