Page History

Apparatus Description

The length of flocculation was increased in order to see how this would affect the effluent turbidity, and also the affect alum dosage had at higher flocculator lengths. The original set up included a bar connected to both process controller and the alum tank in the beginning and at the end is connected to a turbidity meter.

This is the whole FReTA experimental setup to analyze floccilation.

Starting at the clay stock bucket with the clay at a concentration 10g/L in it. Below this bucket, is the clay stock control valve, which is used to control the NTU value of the raw water in the blue bucket.on the left of the bucket, is the influent turbidimeter, which is constantly monitoring the turbidity of raw water which pumped through it by the clay pump.

These sets of coiled tubes are the tube flocculator; it is where flocculation happens after the alum has been added to the raw water. Originally, the setup had just one length of flocculator tubing of 2796 cm. In this experiment, the other two length of tubing, which allows to compare three results in the experimentTo extend length of tubing that the flocculation, the new experimental setup was constructed by adding on to the original setup. The we extended the setup so that we have two additional bars both in front and behind of the original bar, and thus tubing was tripled from 2796 cm to 8388cm.

Old Apparatus

New Apparatus