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

This study compounds three types of coagulants (AlCl3, FeCl3, Fe2(SO4)3) with promising effects on TP removal of domestic sewage. The optimum conditions for TP removal using1compounded coagulants are determined by Plackett-Burman (P-B) design, steepest ascent, and Box-Behnken design. The adequacy of the quadratic regression model is evaluated by analysis of variance (ANOVA). Results show that initial pH, AlCl3, and Fe2(SO4)3 are the significant factors for TP removal. F-test, P-value (Prob>F), coefficients R2, coefficient of variation, and adequate precision analysis demonstrated the goodness of fit for the regression model. The optimized conditions for TP removal determined by the response surface methodology are initial pH 5.2, AlCl3 45 mg/L, and Fe2(SO4)3 51 mg/L, respectively. The experimental TP removal efficiency (82.89%) agrees with the predicted response value (81.99%), thereby validating the feasibility of the model. Compared to single coagulants (AlCl3, FeCl3, Fe2(SO4)3), the compounded coagulants demonstrate 3.29%, 7.59%, and 15.19% higher for TP removal; and 10.1%, 3.0%, and 10.3% Pol. J. Environ. Stud. Vol. 28, No. 2 (2019), 877-885 *e-mail: 46896545@qq.com Longhui Wang and Yangwu Chen contributed equally to this work. DOI: 10.15244/pjoes/85201 ONLINE PUBLICATION DATE: 2018-09-10

Optimizing Three Kinds of Coagulants Using Plackett-Burman and Response Surface Methodology for Phosphorus Removal from Domestic Sewage