SZN Central transmission mud scraper and sucker applies to the radial flow secondary sedimentation tank for removal of sludge and scum. It has a supporting block in the centre with central transmission. The sludge is removed by spontaneous imbibition through flat nozzle. It is equipped with scum skimmer and remover. The bottom of tank can be either flat or sloping. The overload protection unit can be installed and connected to the computer as required by the clients.
The underwater part of the scraper is made of stainless steel. The decelerators are imported from Germany, with a guarantee of no maintenance required for the first 3 years. The electric control systems are purchased from Siemens.