The use of alum as coagulant for removing cyanobacterial cells in drinking water

被引：2

作者：

Sengul, Ayse Busra ^{[1
]}

Tufekci, Nese ^{[2
]}

Aktan, Sevil ^{[1
]}

机构：

[1] Fatih Univ, Dept Environm Engn, Fac Engn, TR-34500 Istanbul, Turkey

[2] Istanbul Univ, Dept Environm Engn, Fac Engn, TR-34320 Istanbul, Turkey

来源：

DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 53期

关键词：

Eutrophication; Cyanobacteria; Microcystin; Coagulation; Aluminum sulfate; MICROCYSTIS-AERUGINOSA; SEDIMENTATION; BLOOMS; FATE;

D O I：

10.1080/19443994.2016.1153982

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A variety of problems can occur due to the presence of cyanobacteria in water resources used for drinking, agricultural, industrial, commercial, and recreational purposes. In addition, certain cyanobacteria genera are producers of several potent toxins, which endanger the human and animal health. Coagulation is the key step in water treatment process for algae and cyanobacteria, and their associated metabolites removal. The objective of this study was to examine the coagulation processes to optimize the removal of cyanobacterial cells from drinking water under various aluminum sulfate dose and pH values. The influence of cationic polyelectrolyte as a coagulant aid on the cells in accompany with aluminum sulfate was also studied. A set of jar test experiments at 200rpm of rapid mixing, and 30rpm of slow mixing and 30min settling time were conducted to find the optimum chemical dose and pH. From the results of the tests, the optimum dose and pH for aluminum sulfate coagulant and polyelectrolyte were obtained corresponding to the lowest concentrations of cyanobacterial cells and turbidity.

引用

页码：25610 / 25616

页数：7

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