What is the cause of the unstable water quality of the inclined pipe settling tank(Lamella clarifier)

The inclined pipe sedimentation tank has the characteristics of small area, low cost and high precipitation efficiency, and the unstable water quality may have the following reasons:

1, the change of raw water causes the increase of sediment

Resulting in increased turbidity of raw water entering the plant; In addition, due to the continuous deterioration of raw water quality in recent years, in addition to the continuous replacement of water purifier, the dosage has also increased, resulting in an increase in sediment.

2. The water distribution at the inlet of the inclined pipe settling tank is uneven, near the inlet, the liquid movement appears serious turbulence or the water inlet speed is fast, resulting in the local liquid flow speed at the inlet, which makes the original sludge deposited on the inclined pipe rise again.

3, improper mud discharge or equipment problems

During the operation of the inclined pipe settling tank, the alum of the whole settling tank will be higher than the tolerable limit value because the mud is not discharged in time or the mud is not sufficiently discharged. At the same time, if the mud scraper fails in the actual operation of the water plant and stops operation, the phenomenon of alum floating is extremely obvious during this period.