Abstract
The research was carried out to appreciate a slow sand filtration treatment by an investigation of suspended matter distribution in sand beds.The chlorination treatment was given to sand beds. The core-sampler to take suspended matter was inserted in slow sand filter model beds during the filter operation. The following results were obtained.
Normalized head loss value was increased at a chlorination treatment model than at a nonchlorination model (control model) after about 35 days of filter run. From the depth distribution of the suspended solid (SS), a model with chlorination treatment retained large amount of suspended matter than a model treated by non-chlorination. And suspended matter was mainly retained at the extremely thin layer at the sand column of a control model.
Small animals increased in the upper sand layer of a control, but were not existed in a model chlorination treatment.
Measurement of particles in filtered water by a particle counter were decreased at a control model accompany with filter run.
