Method for operating an agitating device and a digester wherein the digester (1) is filled with a substrate (7) and wherein an agitating device (10) controlled by a control device (50) is disposed in the digester (1). The following process steps are carried out. a) A target load curve (60) is lodged in the control device (50) b) the control device (50) prescribes a target speed of rotation (61) c) the control device (50) operates the agitating device (10) at an actual speed of rotation (71) corresponding to the prescribed target speed of rotation (61); d) the control device captures an actual measurement value (81) which is characteristic of the torque of the agitating device (10) at the actual speed of rotation (71); e) the control device (50) derives from the actual measurement value (81) an actual characteristic value (91) of the applied torque of the agitating device (10); f) the control device (50) compares the derived actual characteristic value (73) against the target characteristic value (63) of the substrate (7) resulting from the target load curve (60) at the prescribed target speed of rotation (61); g) the control device (50) controls the agitating device (10) in dependence on the result of comparison.

An automatic stirring cup, comprising a cup body, a stirring ball arranged at the bottom of a cavity of the cup body and a power base for supplying power to the stirring ball; a first electrode for electrically connecting the stirring ball and the power base is arranged at the bottom of the cup body; a first magnet is arranged in the stirring ball, and a second magnet matched with the first magnet is arranged at the bottom of the cup body, and the stirring ball and the cup body are magnetically connected; a third magnet matched with the second magnet is arranged at the power base, and the cup body and the power base are magnetically connected. The automatic stirring cup could avoid the water leakage problem during the use of the automatic stirring cup in the prior art.

Wastewater treatment systems are disclosed. A wastewater treatment system includes a wastewater conduit disposed in a wastewater treatment vessel, a pump comprising an intake and an outlet connectable to the at least one opening of the wastewater conduit, and an adapter comprising a first end and a second end. The adapter is configured, in a treatment mode, to provide a flow path for wastewater from the wastewater treatment vessel through the adapter and pump to the wastewater conduit. The adapter is further configured to, in a backflush mode, provide a flow path for wastewater through the plurality of nozzles of the wastewater conduit and through the adapter and pump for discharge into the wastewater treatment vessel. Methods of treating wastewater using the system and adapter are disclosed. Methods of retrofitting a wastewater treatment system by providing the adapter are disclosed.

A rotary gas bubble ejector has a fluid reservoir chamber having at a bottom end a fluid discharge opening and a shaft extending through fluid reservoir chamber in connection with a rotor plate. The rotor plate has an outer dimension greater than the outer dimension of fluid discharge opening and is positioned proximate bottom end of fluid reservoir chamber such that a fluid acceleration gap is formed. Rotation of the shaft and rotor plate initiates a fluid flow thereby generating a low-pressure zone within the fluid acceleration gap, wherein gas is discharged from the fluid reservoir chamber into the fluid acceleration gap. As the gas is expelled from the fluid acceleration gap, fluids, gas and liquid, are brought into contact producing micro-sized gas bubbles that are ejected into the body of liquid.

A liquid polymer or chemical activation system, having a chamber; a top cover plate, a middle cover plate and a bottom cover plate; wherein such configuration creates a hollow space inside the chamber that is flanked by the top cover plate and the bottom cover plate; a blending reactor with one or more inlets for receiving one or more substances; an upper multistage mixing cup configured to receive the one or more substances from the one or more inlets; at least one high shear mixer for mixing the one or more substances; at least one submersible actuator for actuating the high shear mixer; an intermediate blending section for receiving the one or more substances from the upper multistage mixing cup; a lower multistage aging cup for further mixing of the one or more substances; and at least one outlet on the bottom cover plate for releasing the one or more substances.

An inner plastic liquid container (25) includes a filling neck (41) in an upper wall (33) for filling the inner container and a front side outlet neck (40) for an outlet armature. A lower wall (28) interconnecting two side walls (30, 31), a rear wall (32) and a front wall (29) supports the container on a transport pallet (21) pallet base (26), which has an outer mantle (24) for receiving the container. The outlet neck is at a hopper bottom (39) of an outlet hopper (34) in the lower bottom wall. The outlet hopper has a front hopper wall (35) and inclined lateral hopper walls (36, 37) that are arranged at a hopper angle and each extend from a keel-shaped hopper base (38) to a lower edge (46, 47) of a side wall. A keel line (63) rises at another hopper angle from an outlet neck toward the rear wall.

The present disclosure is directed to a blending system including a blending mechanism, wherein said blending mechanism comprises a mixing chamber including at least a submersible motor, at least a high shear mixer, at least an impeller and at least a multistage retention time cup.

A mixing device, system and method of use for mixing liquids in a container using a separate magnet in a wearable. The mixing device receives a magnet insert that is magnetically coupled with the separate magnet. The separate magnet is placed in a wearable and can be actuated by a finger or a hand, and the actuation causes the mixing device to move and rotate. An insertable stem on the mixing device can have different shapes or functional attachments for enhancing function of the mixing device in different embodiments. In some embodiments, the magnet insert can be stored together with the wearable.

An automatic stirring cup, comprising a cup body, a stirring ball arranged at the bottom of a cavity of the cup body and a power base for supplying power to the stirring ball; a first electrode for electrically connecting the stirring ball and the power base is arranged at the bottom of the cup body; a first magnet is arranged in the stirring ball, and a second magnet matched with the first magnet is arranged at the bottom of the cup body, and the stirring ball and the cup body are magnetically connected; a third magnet matched with the second magnet is arranged at the power base, and the cup body and the power base are magnetically connected. The automatic stirring cup could avoid the water leakage problem during the use of the automatic stirring cup in the prior art.

An immersion mixer includes: a housing; a drive motor residing within the housing; a shaft attached to the motor and configured to rotate relative to the housing; blades attached to and rotatable with the shaft; a handle attached to the housing, the handle including a first segment and a second segment attached to the first segment and to the housing; and a trigger attached to the handle and operatively associated with the motor. The trigger includes a first segment that is generally parallel with the first segment of the handle and a second segment that is generally parallel with the second segment of the handle. Engagement by a user of either the first segment of the trigger or the second segment of the trigger causes the drive motor to rotate the shaft and blades.