What is the treatment process used in Nanchong wastewater treatment plant?

The CASS process is generally used for domestic wastewater treatment in small towns, i.e., less than 10w tons/day of water.

The advantages of CASS process are countless, and you can search so many of them on the internet.

Mainly in the following points:

1. Save place, save construction, because of the elimination of the secondary sedimentation tank

2. Can realize nitrogen and phosphorus removal.

CASS process effluent water quality is better than the general activated sludge process effluent water quality, normal operation can be fully achieved a B standard.

The disadvantage is that the effect of nitrogen and phosphorus removal is not very stable, it is best to add chemical phosphorus removal devices.

Additionally, it is not suitable for large volume of sewage treatment. (Large water volume or AO or A2O is good)

Also, in the field of industrial wastewater with small water volume, CASS is often utilized because of the flexibility of operation.

Nanchong City Wastewater Treatment Plant Phase I is 6w tons / day, and is now in the second phase of construction.