Journal
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
Volume 27, Issue 1, Pages 113-126Publisher
SPRINGER HEIDELBERG
DOI: 10.1590/S0104-66322010000100010
Keywords
Alum; PACl; Ferric Chloride; Coagulation; Cyanobacteria; Saxitoxin
Categories
Funding
- Parana Sanitation Company (SANEPAR)
- Araucaria Foundation
Ask authors/readers for more resources
This work is concerned with optimizing the performance of the coagulation process in terms of the removal of intact cyanobacteria cells and saxitoxins (STX). The evaluation has been carried out through bench-scale jar tests to construct coagulation diagrams for aluminium sulphate, polyaluminium chloride (PACl) and ferric chloride. The test water was taken from a eutrophic surface source, collected at the inlet to the water treatment plant that supplies Ponta Grossa City, Brazil, at a time of high algal activity corresponding to a total of 108833 cells/mL of cyanobacteria. By constructing the coagulation diagram for turbidity, the optimal dose-pH conditions were used in subsequent tests involving both coagulation and sand filtration. In these tests the benefits of adding a cationic synthetic polymer and powdered activated carbon (PAC) to the overall treatment were investigated. From the results of the tests, the optimal dosages and pH for each coagulant, polymer and PAC were obtained corresponding to the lowest concentrations of cyanobacteria cells. STX and turbidity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available