Physical chemical treatment units

In conventional water treatment plants flocculation is commonly achieved in one or more continuously stirred tanks. As a consequence, a portion of water leaving the flocculator has been treated for an unnecessary long time. The retention time in conventional stirred tanks is three to five times longer than those indicated by the jar test

The Pipe Flocculator consists of a calculated length of pipe which is expanded in diameter along its length in order to facilitate the slower ortho-kinetic floc building up. The pipe is divided into certain lengths that are connected by 180° elbows. The result is a “coiled” pipe flocculator that is supported on a steel support frame. The flocculator pipe length and diameters can be exactly determined based on jar test results. Chemicals can be injected into the flocculator precisely at those points where they are most effective. The energy required for the flocculation process is defined by factors such as fluid velocity and pipe friction under plug flow conditions, without the use of internal or external mixers.