A grinder accessory is useful for a pump in a wastewater application. The grinder accessory has a cutter plate and a cutting body that co-act on solids, especially fibriform solids. The cutter plate has first and second planar faces, mounted in an inlet of the pump, with a plurality of through holes and a central aperture. The cutting body is poised atop the first planar face and extends through the central aperture to rotationally couple with a drive shaft of the pump. A central hub of the cutting body has a plurality of arms that extend radially proximate to the first planar face, so that a leading edge of the arms interacts with the through holes on solids passing therethrough. A housing defines a cutting chamber around the cutter plate and the cutting body to protect them and to induce swirling action.

An animal slurry macerator (1) comprising a housing (2), a slurry chamber (3) in the housing (2) for receiving slurry from a slurry inlet (6) on the housing (2), a rotatable cutting plunger (4) in the slurry chamber (3) for macerating slurry, and a plurality of slurry outlets (7) on the housing (2) for discharging macerated slurry from the slurry chamber (3) wherein the slurry outlets (7) are provided with air-valves (8) at the housing (2) to facilitate air flow through the slurry outlet (7).

A slurry macerator (1) comprising a housing (2), a slurry chamber (3) in the housing (2) for receiving slurry from a slurry inlet (6) on the housing (2), a rotatable cutting plunger (4) in the slurry chamber (3) for macerating slurry, a plurality of slurry outlets (7) on the housing (2) for discharging macerated slurry from the slurry chamber (3) wherein the cutting plunger (4) comprises at least one cutting blade (35) having cutting teeth (9).

Provided is a hair cutting assembly. The hair cutting assembly includes at least one first shearing wheel, first transmission shaft that drives the first shearing wheel to rotate, at least one second shearing wheel and second transmission shaft that drives the second shearing wheel to rotate. Opposite end surfaces of each first shearing wheel and the corresponding second shearing wheel are attached to each other. The first cutting blades, formed by intersecting end surface of the first shearing wheel with side wall, and the second cutting blades, formed by intersecting end surface of the second shearing wheel with side wall, oppositely move in a feed direction, such that long and thin linear sundries such as hairs and fabrics can be continuously shorn. A floor drain with the hair cutting assembly is also provided.

Methods and systems for reducing an average particle size of blackwater solids is disclosed. A vessel is configured to receive a blackwater stream through a one-way inlet. The one-way inlet is configured to allow the blackwater stream into the vessel and prevent backflow. The blackwater stream contains blackwater solids and water. A device in a bottom portion of the vessel is configured to receive the blackwater and comminute the blackwater solids. A recirculating pump is configured to recirculate the blackwater stream under pressure through the device until the average particle size of the blackwater solids is reduced below a size threshold, resulting in a sized blackwater stream.

The present disclosure provides a kitchen waste disposal system. The kitchen waste disposal system includes a garbage disposal having a top opening connected with a water outlet of a sink and a side opening connected with a drainage pipeline, an electric control valve in series with a water supply pipeline of the faucet, and a control box. The control box is configured to start the garbage disposal and turn on the electric control valve in response to a system starting signal. And the control box is further configured to stops the garbage disposal and shut the electric control valve in response to a completion state of a cleaning task of the garbage disposal. Based on present disclosure, start and stop of the garbage disposal and water source of the faucet are synchronously controlled by the control box, thereby simplifying manual operation of a user.

The present disclosure provides a kitchen waste disposal system. The kitchen waste disposal system includes a garbage disposal having a top opening connected with a water outlet of a sink and a side opening connected with a drainage pipeline, an electric control valve in series with a water supply pipeline of the faucet, and a control box. The control box is configured to start the garbage disposal and turn on the electric control valve in response to a system starting signal. And the control box is further configured to stops the garbage disposal and shut the electric control valve in response to a completion state of a cleaning task of the garbage disposal. Based on present disclosure, start and stop of the garbage disposal and water source of the faucet are synchronously controlled by the control box, thereby simplifying manual operation of a user.

An animal slurry macerator (1) comprising a housing (2), a slurry chamber (3) in the housing (2) for receiving slurry from a slurry inlet (6) on the housing (2), a rotatable cutting plunger (4) in the slurry chamber (3) for macerating slurry, and a plurality of slurry outlets (7) on the housing (2) for discharging macerated slurry from the slurry chamber (3) wherein the slurry outlets (7) are provided with air-valves (8) at the housing (2) to facilitate air flow through the slurry outlet (7).

The inventive concept relates to a sludge drying apparatus, and more particularly to a sludge drying apparatus that may improve an efficiency of drying sludge that is sewage deposit residues and simplify a drying process.

Methods and systems for reducing an average particle size of blackwater solids is disclosed. A vessel is configured to receive a blackwater stream through a one-way inlet. The one-way inlet is configured to allow the blackwater stream into the vessel and prevent backflow. The blackwater stream contains blackwater solids and water. A device in a bottom portion of the vessel is configured to receive the blackwater and comminute the blackwater solids. A recirculating pump is configured to recirculate the blackwater stream under pressure through the device until the average particle size of the blackwater solids is reduced below a size threshold, resulting in a sized blackwater stream.