Wastewater treatment of greywater using a vertical subsurface flow constructed wetland planted with yellow buho (Schizostachyum brachycladum (Kurz) Kurz) with varying hydraulic retention time

Date

6-2016

Degree

Bachelor of Science in Civil Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Perlie P. Velasco

Abstract

This study evaluated the effective of five hydraulic retention times (HRT, 4, 8, 12, 16, 24 hours) on nitrate and phosphate removal in a vertical subsurface flow constructed wetland planted with Yellow Buho (Schizostachyum brachycladum (Kur) Kurz) with a gravel-sand-gravel bed layering. The wastewater analyzed came from a canteen which generates greywater from washing dishes and other kitchen wares. The removal efficiency of nitrate and phosphate was based on the mass per liter concentration of the influent and the effluent after treatment. Average removal for the 4, 8, 12, 16, 24 hours retention where: 88.30%, 87.89%, 88.75%< 88.26%, and 88.89%, respectively for nitrate, and 70.67%, 83.01%, 77.51%, 75.93% and 73.29%, respectively for phosphate. From the results, the average nitrate removal efficiency was not statistically affected by the change in retention time. Although average results showed that at 4 hours it could reach a 100% removal efficiency. On the other hand, average phosphate removal efficiency showed a peak in removal at 8 hours (83.01%). Individual results is consistent peaking at the 8 hours retention. However, statistically, the results on the removal efficiency of phosphate was not affected by the change in hydraulic retention time.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 E63 /N63

Document Type

Thesis

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