Applicability of coagulation-flocculation treatment on a local meat processing wastewater using tahong (Perna viridis) shells.

Date

2012

Degree

Bachelor of Science in Chemical Engineering

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

Meat processing wastewater consisted of suspended solids, comprising of fats and comminute meat. It is made up of a colloidal dispersion of fats together with soluble materials in the wastewater and was found to have a pH of 5.6 COD of 2650mg/L, TSS of 862 mg/L and color of 550PCU. The applicability of tahong shells in the coagulation- flocculation treatment was then assessed in terms of COD since color and TSS contribute significantly to the COD of the wastewater. THe CaCO₃ concentrations in the laboratory grade CaCO₃ and pulverized tahong shell were found to be 91.755 and 99.45%, respectively. The determination of best conditions for coagulation-flocculation treatment were made using experiments on laboratory gradeCaCO₃by varying pH on the first treatment level, resulting to COD and color reduction of about 83.00% and 40.36% at pH 10, and varying CaCo₃ dosage on the second treatment level, resulted to COD and color reduction of 91.00% and 81.27%, respectively, at 60g CaCo₃/L wastewater. To evaluate the applicability of pulverized perna viridis shells in wastewater treatment, another coagulation experiment was performed at best conditions and 67.82% decolorization, 70.535 TSS reduction and 86.00% COD reduction, thus tahong shell is a feasible alternative coagulant source.

Language

English

Location

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

Call Number

LG 993.5 2012 E62 E53

Document Type

Thesis

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