Development and evaluation of design calculation framework for wastewater treatment plant using combined chemical and biological applications

Date of Publication

11-2025

Document Type

Master's Thesis

Degree Name

Master of Engineering major in Environmental Engineering and Management

Subject Categories

Engineering

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Thesis Advisor

Arnel B. Beltran
Marlon P. Paderes

Defense Panel Chair

Aileen H. Orbecido

Defense Panel Member

Carla Mae J. Pausta
Renan Ma. T. Tanhueco

Abstract (English)

This practicum report details the development and validation of a design calculation framework for wastewater treatment plants (WWTPs), integrating chemical and biological treatment processes. Conducted at Kubota Water and Environment Philippines (KWP), the project aimed to automate process selection and equipment sizing based on influent characteristics and discharge standards, thereby enhancing internal design capabilities and reducing reliance on external consultants. The design calculation framework was validated against an existing WWTP serving an optical lens manufacturer. Comparative analysis revealed strong alignment in process flow and tank specifications, with most volume deviations under 10%. For instance, the equalization tank differed by only 1.86% and the pH adjustment tank by 7.73%. Larger deviations were observed in units influenced by newer technologies, particularly the high-rate clarifier, such as the coagulation tank (114.97%), flocculation tank (144.24%), and disinfection tank (40.32%). Equipment specifications also showed consistency, with major deviations only found at mixing (62.96%) and aeration (91.67%) blowers due to differences in tank capacity and assumptions in oxygen demand calculation. The developed design calculation framework was also used to design a small scale WWTP for a paint manufacturing company, in which it was found to require chemical treatment for manganese, nickel, arsenic, and zinc removal. These results confirm the design calculation framework’s accuracy and practical usability, supporting its potential to streamline WWTP design workflows given continuous improvement and study to areas with large deviations.

Abstract Format

html

Abstract (Filipino)

Ang practicum report ay naglalahad ng proseso ng pagbuo at pagsusuri ng isang design calculation framework para sa mga wastewater treatment plant (WWTP) na gumagamit ng chemical at biological na paraan. Isinagawa ito sa Kubota Water and Environment Philippines (KWP) at naglalayong mapadali ang pagpili ng proseso at sukat ng mga kagamitan at tangke batay sa influent characteristics at discharge standards. Ang design calculation framework ay sinuri sa paraan ng pagkumpara gamit ang isang operational na WWTP mula sa optical lens manufacturing plant. Ipinakita ng paghahambing na malaki ang pagkakatugma sa proseso at sukat ng mga kagamitan at tangke, kung saan karamihan ng diperensya ay mas mababa sa 10%. Halimbawa, ang equalization tank ay may diperensya lamang na 1.86% at ang pH adjustment tank na 7.73%. Mas malalaking diperensya naman ang nakita sa mga proseso na apektado ng pagkakaiba sa design assumptions at mas makabagong teknolohiya na dulot ng high-rate clarifier, tulad ng coagulation tank (114.97%), flocculation tank (144.24%), at disinfection tank (40.32%). Ipinakita rin ng equipment specifications ang pagkakapareho ng mga kagamitan, maliban lamang sa iilan katulad ng mixing (62.96%) at aeration (91.67%) na nagmumula sa pagkakaiba ng sukat ng mga tangke at paraan sa pagsukat ng oxygen demand. Ginamit din ang design calculation framework na ito sa pagbuo ng WWTP mula sa paint manufacturing company na kinakailangan ng chemical na paraan ng pangtanggal sa manganese, nickel, arsenic, at zinc. Pinatutunayan ng mga resulta ang naaayon at praktikal na potensyal ang design calculation framework, at sinusuportahan nito ang kagustuhan na mapabilis ang WWTP design.

Abstract Format

html

Language

English

Format

Electronic

Keywords

Sewage disposal plants

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