2. Materials and methods
2.1. Equipment and materials
Resin XAD-4 and XAD-7 Amberlite were supplied by Rohm and Haas of Gessate (MI). It is designed
for organic compound removal from wastewaters. Methanol and acetone were distilled to treat resin and
extract organic compounds accumulated by resin column. Other regents such as hydrochloric acid (HCl)
and sodium sulphate (Na2SO4) were AR grade. Activated carbon, haydite and quartz sand were washed
by ultra pure water for several times, and then dried at 500??
2.2. Experiment
2.2.1. Water sample collection
Tap water was collected from Jinan in China. A barrel made of polyethylene with volume of 25L was
used to collect the water. Three adsorption column filled with activated carbon, haydite and quartz sand
were prepared to remove organic pollutants in tap water. All of column had a filler volume of 2L. 20L
collected tap water was pumped into column by a peristaltic pump and the contact time was controlled in
1h [18]. In this experiment, we used sample 1, sample 2 and sample 3 to represent water samples treated
by activated carbon, haydite and quartz sand column respectively, corresponding to their raw water
sample a, b and c. All water samples were adjust to pH