A water treatment system comprises a flow path through a first activated carbon filter, a second activated carbon filter downstream of the first activated carbon filter, a particulate filter downstream of the second activated carbon filter, for example a ceramic membrane, and a UV sterilizer downstream of the particulate filter. Ozone is introduced into the process water ahead of a water storage vessel for storing treated water produced by the system. A recycle subsystem is periodically operated to withdraw treated water from the water storage vessel to form recycled water, introduce the recycled water to the water lines upstream of the UV sterilizer, and return the recycled water to the water storage vessel. A main programmable logic controller (PLC) controls a flow of the process water through the water treatment system and controls the recycle subsystem.

A method includes providing a resonant thermal oscillator in a thermofluidic system having at least two counter-flowing liquid streams separated by at least a spectrum absorbing material, wherein the spectrum absorbing material is hydrophobic, light-absorbing, and photothermal, and adjusting a flow rate in at least one of the counter-flowing liquid streams to maximize heat transfer between the at least two counter-flowing liquid streams.

Zero liquid discharge systems, processes, and techniques for treating a saltwater without evaporative crystallization. The saltwater is treated by a fluidic circuit comprising a high-pressure reverse osmosis (“HPRO”) unit configured to operate at a hydraulic pressure of at least 1,500 psi, a cooling crystallizer, and a solids-liquid separator. The saltwater is first concentrated by the HPRO unit to produce an HPRO brine, which is subsequently cooled to a designated crystallization temperature by the cooling crystallizer. The cooling crystallizer crystallizes salt crystals from the cooled HPRO brine and produces a salt-diminished brine. The solids-liquid separator separates the salt-diminished brine from the salt crystals. The salt-diminished brine from the solids-liquid separator is returned to the HPRO unit for further treatment, which allows additional salts to be crystallized from the returned salt-diminished brine.

An MEC reactor system for strengthening anaerobic digestion is provided. The MEC reactor system includes a reactor module; multiple biological anode plates and multiple biological cathode plates which are arranged in the reactor module; and an automatic control power supply. An anode and a cathode of the automatic control power supply are respectively connected with anode area wires and cathode area wires, the anode area wires are electrically connected with the biological anode plates, and the cathode area wires are electrically connected with the biological cathode plates. The biological anode plates and the biological cathode plates are subjected to biofilm culturing and acclimation in a biological anode plate acclimation area and a biological cathode plate acclimation area respectively; and in an anaerobic digestion reaction area, anaerobic digestion is strengthened based on the biological anode plates and the biological cathode plates which complete biofilm culturing acclimation.

A valve for a water system including a water supply conduit, the valve having a valve housing that defines a valve inlet and valve outlet. The valve inlet is connected to the water conduit and at least one piston is disposed within the valve housing and is configured to direct flow within the valve. A motor associated with the valve housing is operably attached to the piston and is further configured for driving the piston between a service position, a bypass position, and a shutoff position. The valve further includes at least one sensor associated with the valve inlet or valve outlet for monitoring a water condition. A control system receives data from the at least one sensor and is configured for actuating the motor between the service position, the bypass position, and the shutoff position in response to the data.

A method for suppressing sedimentation of suspended substances ef the present invention is a method for suppressing sedimentation of suspended substances in water at the bottom of a tank disposed in a water system in papermaking equipment, comprising a step of blowing an oxygen-containing gas into the water, for stirring and aeration; a step of detecting a change with time in existence states of the suspended substances in the tank by the stirring and the aeration; and a control step of feeding at least one of an oxygen-containing gas and a slime control agent to the tank based on the detection result to suppress the sedimentation of the suspended substances in the tank.

A water purifier is disclosed. The water purifier according to a concept of the disclosure includes: a first module including a filter unit including a plurality of filters; a second module including a controller configured to control the first module, the second module coupled with the first module; and a water supply module including a display connected to the second module and displaying operation information of the water purifier, and a water supply nozzle receiving purified water from the first module and discharging the purified water to outside, wherein the controller is configured to control the display to display a purified water supply mode corresponding to the first module coupled with the second module.

A water quality management system for a water installation containing water. In some embodiments, the system has a water quality measurement module adapted to monitor the water quality of the water in the water installation and to send water quality information to a controller; and a chemical dispensing module adapted to dispense at least one chemical directly into the water installation in response to signals from the controller based on a water quality measurement by the water quality measurement module, the chemical dispensing module comprising a reservoir adapted to contain the at least one chemical, a movable dispenser adapted and configured to advance a fixed quantity of the chemical out of the reservoir and into the water of the water installation in response to signals from the controller.

A dispenser includes a water supply flow path to guide water supplied from a water supply source toward a filter; an auxiliary flow path to branch off at the first point of the water supply flow path and then to merge into a second point located downstream of the first point; a flow switching valve installed at the first point to control a flow from the water supply flow path to the auxiliary flow path; a water ejection nozzle through which filtered is ejected; a hot water module forming a heating flow path and configured to heat the purified water into hot water; a hot water flow path configured to guide the hot water passing through the hot water module toward the water ejection nozzle; and a controller to control the flow switching valve and the hot water module.

A biosolids treatment system that treats human biosolids to produce thermal energy for self-consumption for the production of beneficial use products including low carbon ash, high carbon activated biochar, and Class A biosolids. The system includes a variable feed conveyor that conveys a biosolid feed into a dryer; a dryer that dries the biosolid feed to a predetermined moisture content to create one of a beneficial use products, where the predetermined moisture content is controlled by varying the speed of variable feed conveyors and a variable feed mixer; and a gasifier that converts the biosolid feed into two of the beneficial use products.