Mathematical Model of Subsurface Recirculation Flow Constructed Wetland Domestic Wastewater Treatment for Household

Rattapol Suksomboon; Chaiyan Junsiri; Siwadol Kanyakam; Sutawan Tangjitjaroenkit

doi:10.14456/rcmrj.2021.240999

Authors

Rattapol Suksomboon Department of Engineering Management, Rajabhat Maha Sarakham University
Chaiyan Junsiri Department of Engineering Management, Rajabhat Maha Sarakham University
Siwadol Kanyakam Department of Engineering Management, Rajabhat Maha Sarakham University
Sutawan Tangjitjaroenkit Department of Engineering Management, Rajabhat Maha Sarakham University

DOI:

https://doi.org/10.14456/rcmrj.2021.240999

Keywords:

Mathematical model, Subsurface recirculation flow constructed wetland, Domestic wastewater treatment for household

Abstract

According to the dynamic model of the recirculation plug-flow reactor (RPFR) of subsurface recirculation flow constructed wetland (SRFCW) by using the recycled plastic media contained inside the three polyester tanks with the ratio of Width: length equals > 1: 4. The area of planting reed (Ap) was 1.98 square meters. The depth of subsurface was 25 cm. The recirculation ratio (Q_Re/Q_in), R, was 0.85, with hydraulic recirculation time (HReT) of 12 hours for treating domestic wastewater. The results showed that the BOD removal efficiency was 81.04% and produced the second-order-reaction with a coefficient of constant K₂nd_RPFR equals 0.011 day^-1 which was the interesting alternative treatment for households to instill conscience which helps to reduce the responsibility of the municipality in allocating the government funds to eliminate wastewater and plastic waste.

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