Paper mill wastewater treatment using flocculating agents

Date of Publication

1994

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Chemical Engineering

Subject Categories

Chemical Engineering

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Abstract/Summary

The primary concern of this study is to determine the most effective type of polymeric flocculant in terms of its treating ability on paper mill wastewaters. The polymeric flocculants evaluated were classified into three groups according to their ionic natures, namely -- cationic, anionic and nonionic, all of which have high molecular weights, and low to medium charge densities. Alum was used as the primary coagulant for destabilization purposes and the polyelectrolytes were added to enhance the agglomeration process. Cylinder tests were performed to determine the alum dosage and jar tests were conducted to ascertain the most effective polymeric flocculant among the various samples available. This selection was based on their effect on the pH, turbidity, solids content and supernate color. Based on the analysis of experimental results, it was concluded that the high molecular weight, medium charge density, cationic polymeric flocculant was the most effective in the chemical treatment of paper mill wastewaters.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU06624

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

172 leaves ; Computer print-out.

Keywords

Sewage--Purification--Flocculation; Sewage disposal; Paper mills; Flocculation; Waste water

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