Communications capabilities are supplied to components of pool water recirculation systems, even if the components lack electrical power or supply wires. Capabilities may be furnished by wireless RF devices that connect to existing fittings or ports of the components, for example. The devices are configured to obtain desired information relating to the components (or the water within them) and transmit the information remotely for processing or consideration.

A transportable system for creating an ORP in water includes an ozone supply unit and a manifold housed in separate enclosures on a wheeled frame. The ozone supply unit feeds into the manifold which contains a plurality of fluid paths and has one or more ozone intake ports. The ozone intake ports are fluidically coupled to one or more ozone output ports of the ozone supply unit. The manifold includes flow switches configured to transmit control signals to one or more controllers of the ozone supply unit in response to sensing a flow of water through the fluid paths in order to cause the ozone supply unit to generate ozone. The manifold also includes fluid mixers that are fluidically coupled to the ozone intake ports and configured to introduce the ozone generated by the ozone supply unit into the water flowing through the fluid paths.

A water delivery control system operates to selectively deliver water from a water source to water use devices. The system includes at least one controller that wirelessly communicates messages with a portable user device. The system includes a water control valve and a motor that is operative to selectively move at least one valve element of the valve. A water meter is operative to measure water flow that corresponds to flow through the valve. The controller is operable to cause the valve to enable or prevent flow through the valve responsive at least in part to water flow data. The controller is operative to determine a water use condition responsive to a water usage pattern, and to cause at least one message to be sent to the portable user device responsive to the determined water use condition.

The present teaching relates to method, system, medium, and implementations for storage management. A hash table is constructed, having an index file having one or more slots, each of which includes one or more buckets. Each bucket stores one or more types of records, including a direct record, an indirect record, and a forwarding record. A direct record stores data directly in a bucket of a slot of the index file. When a storage request is received related to some relevant data, the request is handled based on the constructed hash table.

A frac sand separator system includes a sand separator having an inlet fluidly connected to a well for receiving a fracking return mixture from the well. The sand separator is configured to separate water of the fracking return mixture from particulate matter of the fracking return mixture. The sand separator includes an outlet. The frac sand separator system includes a collection container fluidly connected to the outlet of the sand separator for receiving the particulate matter from the sand separator. At least one outlet valve is fluidly connected between the outlet of the sand separator and the collection container. The frac sand separator system includes a computing device operatively connected to the at least one outlet valve. The computing device includes a processor configured to automatically open the at least one outlet valve such that the particulate matter is released from the sand separator into the collection container.

A system for treating water for use in aquatics or recreational facilities is disclosed. The system includes a media filter vessel, a pressure sensor, and a monochromatic light source. A method of treating water for use in aquatics or recreational facilities is also disclosed. The method includes fluidly connecting a media filter vessel to a source of water for use in aquatics or recreational facilities, illuminating a media inside the media filter vessel, observing a monochromatic light source display a first indicator and observing a monochromatic light source display a second indicator. A method of retrofitting a media filter vessel is also disclosed. The method includes installing a pressure sensor on the media filter vessel, installing a monochromatic light source and operably connecting the monochromatic light source to a manual control and to the pressure sensor.

A water delivery control system operates to selectively deliver water from a water source to water use devices. The system includes a master controller that wirelessly communicates messages with a plurality of slave controllers. The system includes a valve slave controller associated with a water control valve and a motor that is operative to selectively move at least one valve element of the valve. A water meter is operative to measure water flow that corresponds to flow through the valve. The master controller is operable to cause the valve slave controller to enable or prevent flow through the valve responsive at least in part to water flow data. The controller is operative to determine a water use condition responsive to a water usage pattern, and to cause at least one message to be sent to a portable user device responsive to the determined water use condition. The user interface slave controller is associated with a user interface.

A pellet manufacturing apparatus according to the present invention includes: a reactor part for producing and discharging either gas hydrate slurry or ice slurry; a pellet forming part which is provided at one side of the outer portion of the reactor part, and which compresses the slurry discharged from the reactor part, so as to form the same into a pellet shape; and a control part for controlling the operation of the reactor part and the pellet forming part, wherein the control part controls the operation of a heating module so that the internal temperature of a first pipe is adjusted to be within a predetermined temperature range when the pellets are formed.

A method and system for the nitrification and denitrification of septic effluent, e.g. from a domestic septic tank, is disclosed comprising a variable speed pump system for constant continuous flow and a recycle mechanism to increase efficacy in producing a final denitrified effluent suitable for discharge to ground or surface waters.

A method of operating a dual reverse osmosis/pressure retarded osmosis plant, including when electricity costs less than a first predetermined price, moderate salinity water is pumped into the first portion of a pressure vessel having first and second portions separated by a water permeable/salt impermeable osmotic membrane to yield desalinated permeate in the second portion and brine in the first portion. Further, when electricity costs greater than the first predetermined price, low salinity water is pumped into the second portion and brine is pumped into the first portion to yield pressurized moderate salinity water in the second portion which is run through an energy recovery device to generate electricity. The salinity of the low salinity water is lower than the salinity of the moderate salinity water, and the salinity of the moderate salinity water is lower than the salinity of the brine.