English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this research the process of coagulation/precipitation followed by ultraviolet disinfection was investigated for tertiary treatment of sewage from polish pond. Were done laboratory tests using jart-test to simulate coagulation and in reactor UV to simulate disinfection, varying operational conditions. The process demonstrated a good performance, had been verified moderate removal of turbidity (27%-66%), COD (22%-53%), apparent color (22%-64%), real color (22%-64%), phosphorus (31%-52%), total solids (31%-52%) and suspended solids (10%-30%). To improve the process of coagulation were realized tests with anionic and cationic polymers, and the cationic showed the best results. The dose of coagulant considered optimal was 60 mg.L-1 of ferric chloride combined with 20 mg.L-1 of polymer cationic. In the best operational configuration was obtained inactivation of 4,65 log to CT, and 4,60 log to E. coli, obtaining 62,7%  of removal for turbidity, 65,3% and 69,7% of apparent color and real color respectively, 50,3% of COD and 47,3% of suspended solids. In conclusion this process can be considered suitable for the removal of pollutants from a polish pond, but should be observed the quality of the effluent for the presence excessive of algae that can harm the treatment, making the process difficult

semina. ciências exatas e tecnológicas

Tratamento Terciário de Esgoto Sanitário Proveniente de Lagoa de Polimento Utilizando Sistema de Coagulação/Precipitação Seguido de Radiação Ultravioleta