Wastewater characterization of food industry

Date

1998

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Elvira T. Tumlos

Co-adviser

Lilia S. P. Madamba

Abstract

Raw(influent) and treated (effluent) wastewater from two food firms in Laguna designated as Firms A and B were surveyed primarily, to characterize wastewater, determine pollution load, and assess the efficiency of the wastewater treatment plant during their peak production months. The wastewater parameters used in the characterization includes pH, Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Total Phosphorus (TP), and Total Kjeldahl Nitrogen (TKN). Firm A manufactures milk and coffee and is also involved in canning of refined oil while Firm B is involved in the manufacture of snack foods and raising of hogs and chicken. Only Firm A employs wastewater treatment to treat its waste. Results of the analysis showed that the influent from Firm A had values ranging from 5.58-6.02 for pH, 316-898 mg/L for BOD5, 4,740-6,180 mg/L for COD, 235-334 mg/L for TSS, 3.52-4.81 mg/L for TP and 7.6-37.1 mg/L for TKN. On the other hand, Firm B had values ranging from 6.50-7.72 for pH, 413-876 mg/L for BOD5, 1,980-3,720 mg/L for COD, 23-87 mg/L for TSS, 0.20-0.56 mg/L for TP, and 0.79-2.37 mg/L for TKN. Effluent from Firm A had values ranging from 7.60-8.49 for pH, 24.4-77.6 mg/L for BOD5, 78-480 mg/L for COD, 4.67-32 mg/L for TSS, 1.08-1.58 mg/L for TP and 0.28-3.0 mg/L for TKN. All values measured for BOD5, TSS and pH satisfied the standard set by DENR in all sampling months except for COD which was high during the month of November. The efficiency of the wastewater treatment of Firm A was also assessed. Results showed that BOD5 and COD were reduced to as much as 75-94% and 92-98%, respectively. Other parameters like TSS, TP, and TKN were reduced by 96-98%, 67-75% and 92-99%, respectively. Firm B contributed higher pollution load than Firm A. Firm B discharged a daily pollution load of 39-83 kg BOD5, 187-352 kg COD, 2.14-8.20 kg TSS, 0.02-0.05 kg TP, and 0.08-0.22 kg TKN. On the other hand, Firm A discharged a pollution load of 2.31-7.34 kg BOD5, 7.38-45.41 kg COD, 0.44-3.03 kg TSS, 0.10-0.15 kg TP, and 0.01-0.28 kg TKN.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

UPLBUT-6639

Document Type

Thesis

This document is currently not available here.

Share

COinS