The impact of fractionation of hydraulic load on oxidation performances of sand filters

Infiltration-percolation is an extensive treatment technique aimed at eliminating organic matter, oxidizing nitrogen, and removing pathogens. The main purpose of this work is to evaluate the impact of fractionation of hydraulic load on oxidation performances of unsaturated sand filters. Experimental...

Full description

Saved in:
Bibliographic Details
Published in:Journal of water reuse and desalination 2016-06, Vol.6 (2), p.325-332
Main Authors: Bali, Mahmoud, Gueddari, Moncef
Format: Article
Language:English
Subjects:
Ammonium
Ammonium compounds
Ammonium nitrogen
Aquifers
Bacteria
Biodegradation
Biomass
Capacity
Chemical oxygen demand
Drainage
Drainage measurement
Effluents
Experiments
Feeding
Filters
Fluid filters
Fractionation
Hydraulic loading
Hydraulics
Infiltration
Nitrates
Nitrogen
Organic matter
Oxidation
Pathogens
Percolation
Purification
Sand
Sand filters
Water purification
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Infiltration-percolation is an extensive treatment technique aimed at eliminating organic matter, oxidizing nitrogen, and removing pathogens. The main purpose of this work is to evaluate the impact of fractionation of hydraulic load on oxidation performances of unsaturated sand filters. Experimental results showed that oxidation of organic matter and ammonium nitrogen has mainly occurred in the upper layers of the filter bed. They also showed that treatment efficiency increased with the increase of the thickness of the filtering mass and the fractionation of applied hydraulic load. The experiments pointed out the influence of the fractionation of daily load on oxidation capacity of the intermittent sand filter. Results showed that increasing the fractionation improves the purification capacity of the treatment process. The simulations showed that biomass growth is very sensitive to the fractionation of hydraulic load, and that the increase of the number of feeding-drainage cycles per day leads to accumulate purifying biomass in the upper layers of unsaturated filters.
ISSN:2220-1319
2408-9370
DOI:10.2166/wrd.2015.066