The invention discloses a 
treatment system and a treatment process for removing polluted bottom mud of lakes, reservoirs and riverways. The 
treatment system comprises 
water body isolation equipment, 
slurry stirring equipment, centrifugal 
dewatering equipment and 
sludge storage and transportation equipment, wherein the 
water body isolation equipment, the 
slurry stirring equipment, the centrifugal 
dewatering equipment and the 
sludge storage and transportation equipment are communicated through pipelines, the 
water body isolation equipment comprises a plurality of isolation cavities capable of being spliced with one another and a crane for lifting and aligning the isolation cavities, the centrifugal 
dewatering equipment comprises a 
sludge conditioning and stirring 
system, a sludge-water 
separation system, a 
sludge dewatering system and a 
sludge cake spiral conveying and unloading 
system, the sludge storage and transportation equipment comprises a storage and transportation ship body, positioning piles for supporting the storage and transportation ship body and a mud bin located in the storage and transportation ship body, and a spiral discharging 
machine is arranged in the mud bin. According to the invention, the movable treatment 
station is adopted, all devices are arranged on a ship for operation, 
land resources are not occupied, the treatment method is simple, bottom mud and water body are directly separated, mud-water separation is implemented in real time, and the 
water content of dry mud is as low as 60%.