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Domestic wastewater treatment using batch-fed constructed wetland and predictive model development for NH3-N removal

Paper ID Volume ID Publish Year Pages File Format Full-Text
35837 45109 2008 9 PDF Available
Title
Domestic wastewater treatment using batch-fed constructed wetland and predictive model development for NH3-N removal
Abstract

In this study, the performance of a pilot-scale batch-fed constructed wetland in treating domestic wastewater from small community was tested. The principal of the system capitalizes on the pollutant removal mechanisms of the soil–plant–microbial interactions of constructed wetlands, and the system operation was integrated with the rhythmical movement of wastewater and air that similar to the operation of conventional sequencing batch reactor. Based on the hydraulic loading of 0.91 m3/m2/day and the daily maximum contact time of 18 h, the system could achieve around 60% removal efficiency for carbonaceous matters. The removals of ammonia nitrogen and phosphorus were about 50 and 40%, respectively, while the removal of total suspended solids was approaching 80%. Mathematical models were developed to describe ammonia nitrogen degradation in the batch-fed constructed wetland. Three analytical approaches including multivariate regression, first-order kinetics and mass balance analysis were done. Prediction model was formulated to predict the system removal efficiency of ammonia nitrogen.

Keywords
Domestic wastewater; Batch-fed; Constructed wetland; Ammonia nitrogen; Predictive model; Coal slag; Cyperus alternifolius
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 43, Issue 3, March 2008, Pages 297–305
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us