Investigation of Moving Bed Biofilm Reactor (MBBR) sewage treatment plant of L.T.I., Sta. Rosa, Laguna, Philippines

Date

12-2015

Degree

Bachelor of Science in Civil Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Perlie P. Velasco

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

In 2003, Laguna Technopark Inc. (LTI) upgraded its sewage treatment plant (STP) into a Moving Bed Biofilm reactor (MBBR) system to accommodate an ultimate flow of 16,000 m³/day (16 MLD) from a former 5000 m³/day (5 MLD) domestic water consumption. To be able to do so, half of its existing aeration tank was converted into two MBBR tanks, and one Post-Aeration Tank and installed additional operational units such as rectangular clarifier, aerobic digester with thickener, and blowers as parts of the other half. The upgrade however required enlargement of the lift station to lengthen the retention time, modification of the chlorination tank, and installation of an equalization tank hereby increasing the operational and maintenance cost of the whole STP. To compensate for the increased cost, it is essential to investigate the performance of the system through its removal efficiency. From the sample data gathered from January 2014 - June 2015, it reveals that the MBBR system successfully removes about 99% of the total coliform of the influent and more than 80% BOD, COD, and TSS removal while maintaining pH level close to 7 with an average of 0.604 deviation. The effluent quality of the system passes the standards of DAO 35 for ultimate disposal to Class C river. It was found out that the cost required fo construction, operating, and maintaining MBBR system is higher than the activated sludge because of higher energy requirement required for operations. This cost is however compensated with higher effective removal of biological constituents without the need for backwashing and sludge return, recyclable and self-washing carriers (life span of 50 years), more energy efficiency, the greater nitrogen and phosporus removal (for other MBBR system), higher efficiency of the tank volume, does not require additional land area, suitable for small-scale treatments, applicable for retrofitting or converting existing systems, and much simple, easier operating procedures.

Language

English

Location

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

Call Number

LG 993 2015 E63 A23

Document Type

Thesis

This document is currently not available here.

Share

COinS