A method and device used for treating effluents by the biological aerobic activated sludge process with hydrodynamic separation, sludge collection, internal sludge recirculation and atmospheric air or oxygen dissolution functions implemented by a device that accumulates the functions of solids retention and gas dissolution in the biological reactor, increasing the hydraulic load capacity of the secondary settler, as well as the load absorption capacity of the biological reactor, thus almost doubling the treatment capacity in relation to a conventional activated sludge process.

An example system includes an auger assembly that is attachable to a vacuum system, in which the auger assembly includes a hose, an auger, and an auger motor. The hose includes an inlet at a distal end and an outlet at a proximal end. The auger includes a shaftless helical blade having a portion that is radially enveloped by the hose. The vacuum system is adapted to suck material from the septic tank or pit latrine via the hose. The auger motor is adapted to rotate the auger about a helical axis in a first direction, in which the rotation about the helical axis in the first direction causes the shaftless helical blade of the auger to translate along the helical axis from the outlet of the hose towards the inlet of the hose.

A method and device used for treating effluents by the biological aerobic activated sludge process with hydrodynamic separation, sludge collection, internal sludge recirculation and atmospheric air or oxygen dissolution functions implemented by a device that accumulates the functions of solids retention and gas dissolution in the biological reactor, increasing the hydraulic load capacity of the secondary settler, as well as the load absorption capacity of the biological reactor, thus almost doubling the treatment capacity in relation to a conventional activated sludge process.

A spoil treatment plant configured within a frame for easy relocation. The spoil treatment plant comprises a dump bin held within the frame for receiving spoil, a vibrating screen separator mounted in the frame away from the dump bin, an elevator located within the frame, the elevator transporting spoil from the dump bin to the vibrating screen separator, a slurry tank within the frame below the vibrating screen separator that collects slurry; and a chute adjacent the vibrating screen separator that delivers spadeable fill. The vibrating screen separator separates the spoil into spadeable fill delivered from the chute and fine slurry delivered to the slurry tank. The spoil treatment plant may also comprise a further dewatering element, such as a rotary press, that extracts water from the spadeable fill.

A system for processing solid and liquid waste includes a first shale shaker, a second shale shaker, a submersible pump, a centrifugal pump, a first collection tank, a second collection tank, a mud cleaner assembly, a variable frequency drive (VFD) centrifugal solid-liquid separator, and a water clarifying assembly. The first shale shaker is in fluid communication with the second shale shaker through the submersible pump. The second shale shaker is in fluid communication with the centrifugal pump through the first collection tank. The centrifugal pump is in fluid communication with the mud cleaner assembly. The mud cleaner assembly is in fluid communication with the VFD centrifugal solid-liquid separator through the water clarifying assembly. Resultantly, the system discharges a flow of usable water through the VFD centrifugal solid-liquid separator as an initial load of solid and liquid waste is inputted into the first shale shaker.

An example system includes an auger assembly that is attachable to a vacuum system, in which the auger assembly includes a hose, an auger, and an auger motor. The hose includes an inlet at a distal end and an outlet at a proximal end. The auger includes a shaftless helical blade having a portion that is radially enveloped by the hose. The vacuum system is adapted to suck material from the septic tank or pit latrine via the hose. The auger motor is adapted to rotate the auger about a helical axis in a first direction, in which the rotation about the helical axis in the first direction causes the shaftless helical blade of the auger to translate along the helical axis from the outlet of the hose towards the inlet of the hose.

A slurry removal system includes a tank, an eddy pump, and a pipe system. The tank is configured to receive a mixture of solid material and liquid. The eddy pump has a pump inlet connected to the tank and a pump outlet. The pipe system is connected to the pump outlet and including a discharge line and a recirculation line. The eddy pump is configured to pump the mixture of solid material and liquid from the tank through the pump inlet to the recirculation line to form an essentially homogeneous mixture, and configured to pump the essentially homogeneous mixture from the tank through the pump inlet to the discharge line to remove the homogeneous mixture from the tank.