This disclosure describes systems, methods, and devices for phytochemical extraction. One example extraction system includes two solvent columns, a material column, and a dewaxing column. The solvent columns store and provide solvent for stripping target chemicals from plant material in the material column. The solvent mixed with target chemicals passes into the dewaxing column, where the target chemicals are separated from waxes and lipids. Cooling is applied to elements of the system by way of an open-loop CO2 refrigeration method. Solvent is moved from the solvent columns to the material column by creating a pressure differential between the two solvent columns.

A method adapts a filter medium to predefinable parameters, such as electrostatic charge, flow-rate behavior, dynamic pressure behavior or differential pressure behavior, fraction filtration efficiency and preservation of a constant quantity and quality of fluid additives. At least one of these parameters is adapted by the targeted influencing of the surface energy of the filter medium (18).

A method adapts a filter medium to predefinable parameters, such as electrostatic charge, flow-rate behavior, dynamic pressure behavior or differential pressure behavior, fraction filtration efficiency and preservation of a constant quantity and quality of fluid additives. At least one of these parameters is adapted by the targeted influencing of the surface energy of the filter medium (18).

A device for protection of wastewater pumps for wet accumulation chambers has a separation chamber provided with a discharge pipe for discharging wastewater into a sewerage network. A supply pipe connected to the separation chamber supplies solid particles containing wastewater into the separation chamber. A reversing valve arranged between the supply pipe and the separation chamber prevents reverse flow of wastewater into the supply pipe. A bidirectional pipe connected to the separation chamber connects the separation chamber with a pump, where the bidirectional pipe serves to supply wastewater from the separation chamber into the pump positioned in the wet accumulation chamber and for reverse flow of wastewater from the pump into the separation chamber to a discharge pipe. A solid particles separator arranged between the separation chamber and the bidirectional pipe separates solid particles contained in wastewater in the separation chamber.

A biocide-generating device including a housing having an inlet and an outlet. The biocide-generating device additionally including a strainer basket that mounts within an interior of the housing including parallel electrode plates positioned within an interior of the strainer basket. The biocide generating device additionally including a protective dielectric sleeve in which the electrode plates are received. The protective dielectric sleeve is positioned between the electrode plates and the strainer basket.

A biocide-generating device including a housing having an inlet and an outlet. The biocide-generating device additionally including a strainer basket that mounts within an interior of the housing including parallel electrode plates positioned within an interior of the strainer basket. The biocide generating device additionally including a protective dielectric sleeve in which the electrode plates are received. The protective dielectric sleeve is positioned between the electrode plates and the strainer basket.

A combined lid and strainer device for a paint container features an outer mounting rim configured for mated fitting onto a rim of the paint container. Within a central circular area surrounded by the rim, there is a perforated a straining area through which paint is pourable. A movable cover is selectively movable between a closed position overlying the perforated straining area, and open positions withdrawn therefrom to allow strained pouring of the paint therethrough. Raised features on the cover are used to secure the cover closed when the lidded container is placed in a paint shaker. A sealing membrane is used, at least initially, seal the perforated area in airtight fashion to maintain paint freshness. Securement features are usable to secure the flap in both closed and open positions.

A combined lid and strainer device for a paint container features an outer mounting rim configured for mated fitting onto a rim of the paint container. Within a central circular area surrounded by the rim, there is a perforated a straining area through which paint is pourable. A movable cover is selectively movable between a closed position overlying the perforated straining area, and open positions withdrawn therefrom to allow strained pouring of the paint therethrough. Raised features on the cover are used to secure the cover closed when the lidded container is placed in a paint shaker. A sealing membrane is used, at least initially, seal the perforated area in airtight fashion to maintain paint freshness. Securement features are usable to secure the flap in both closed and open positions.

A flocculation filter is provided. The flocculation filter includes a filter layer having openings that pass water and trap flocs is provided. The flocculation filter also includes a flocculant layer disposed on at least a portion of the filter layer.

A flocculation filter is provided. The flocculation filter includes a filter layer having openings that pass water and trap flocs is provided. The flocculation filter also includes a flocculant layer disposed on at least a portion of the filter layer.