The upper part of the tank structure is designed to suck different liquid wastes, mud, and dirt from mud or septic tank; Upper part of the tank structure is stable/resistant to frequent cleansing and disinfection; Tank capacity/volume 4 M³; Tilted angle of the tank to backward approximately 3°; Steel material grade Q235, with cylindrical Transverse cut; thickness 5 MM; Front and rear walls thickness 6 MM; External reinforcement; Internal separation partitions 4 MM thickness, Made from steel Q235; Three levels indicator installed on back door's top, middle and lower parts; Two peace of 4´´ diameter ball valve with aluminum fast connector for back wall for tank filling and emptying/draining, where connects tanks filling and draining hoses. Tank draining and washing are done with full lift, which is done by hydraulic cylinders.