A hydrogen water generator includes a body including a first outlet coupled to a first inlet for receiving supply water, and a second inlet coupled to a second outlet, the second outlet for discharging hydrogen water, a water tank assembly detachably attached to the body, the water tank assembly including a water tank and an electrode module coupled to the water tank, and the water tank including a third inlet and a third outlet. When the water tank assembly is attached to the body, the third inlet of the water tank couples to the first outlet of the body, and the third outlet of the water tank couples with the second inlet of the body.

A system and method using a subterranean biological reactor can include a pre-reactor storage unit configured to receive a feedstock including a slurry of biologically derived material and at least one pump configured to pump the effluent from the pre-reactor storage unit. The system may include at least one wellbore containing a subterranean biological reactor configured to receive the effluent from the pre-reactor storage unit. At least a portion of the subterranean biological reactor may be configured to perform anaerobic digestion upon the effluent to generate a biogas.

This disclosure provides techniques for detecting and/or inhibiting corrosion of a distribution/recirculation network for a fluid, e.g., an aqueous matrix (liquid). For example, the disclosed techniques can be used to measure and/or predict degeneration of pipes, solder joints and various other plumbing fixtures in a water distribution network or heat transfer recirculation network caused as a function of variation in environmental parameters. In one embodiment, a system builds a database by measuring metal corrosion (e.g., from lead or copper pipe, solder joint or other type of plumbing vessel or fixture) and correlating degradation of a layer of protective scale and/or metal concentrations present with measured environmental parameters; later, as conditions vary, the database (or associated correlation weights/values) may be used to predict degradation of scale health and/or corrosion stemming from short and/or long term water conditions, and to effectuate advance mitigation.

A method for treating an aqueous fluid comprising a biodegradable organic substance in an installation comprising an upflow bioreactor containing a sludge bed, said sludge bed comprising biomass, an external separator, and a conditioning tank, the method comprising: treating the fluid in the conditioning tank; feeding the treated fluid into a lower part of the bioreactor and forming biogas; withdrawing the fluid from an upper part of the bioreactor, which withdrawn fluid comprises biomass; feeding the aqueous fluid withdrawn from the upper part of the bioreactor into the external separator wherein the aqueous fluid comprising the biomass is separated into a liquid phase, and a fluid phase enriched in biomass; returning said fluid phase enriched in biomass from the external separator to the bioreactor; and returning a part of said liquid phase to the conditioning tank.

A fluid sterilization apparatus according to an embodiment includes a tubular portion; a supply head provided at one end of the tubular portion; a discharge head provided at the other end of the tubular portion; a holder provided on the discharge head; a window provided on the discharge head and one surface of which is exposed to a flow path provided in the discharge head; a board provided on a surface of the holder on a side of the window; a light-emitting element provided on the board and allowed to irradiate the window with ultraviolet rays; and a heat insulating portion which is provided between the discharge head and the holder and has a lower thermal conductivity than a thermal conductivity of the holder.

An integrated utility system, comprising: at least one heat pump which includes a compressor for processing water mist from an evaporator and providing the water mist to a condenser; a thermal reservoir configured to contain water and operatively connected to the condenser; a heat management system configured to receive and process excess heat generated between the thermal reservoir and condenser. The heat management system comprises: a plurality of sensors for measuring water pressure, temperature and flow; at least one control valve for controlling movement of a thermal energy from thermal sources; at least one thermal sink; a thermal storage; a plurality of heat exchangers fluidly connected to the thermal sources, to the at least one thermal sinks, to the thermal reservoir and to a plurality of pumps configured to circulate a heat exchange fluid between the thermal sources, thermal reservoir and the at least one thermal sink.

A method of treating and grading contaminated particulate material includes i. physically breaking up the particulate material to separate the particles thereof; ii. rinsing and grading the particulate material to separate the particulate material into an oversize fraction and an undersize fraction; iii. washing and grading the oversize fraction to produce one or more treated aggregate products; iv. passing the undersize fraction through a high shear washing process to separate contaminants therefrom; v. fluidising and cleaning the undersize fraction in a classification tank to produce one or more treated sand products at an underflow thereof by passing clean water upwardly into the classification tank. Optionally, waste water resulting from stages (ii), (iii) and (iv) is treated to form process water, a portion of which is used in stage (ii), a portion of the process water undergoing one or more further treatment processes to produce clean water used in stage (v).

An electrolytic assembly and a laundry treatment apparatus. An electrolytic assembly includes an electrolytic device, a heating member, and a mounting device. The electrolytic device includes an electrode. The electrolytic device and/or heating member is connected to the mounting device. The heating member and the electrode are located on the same side of the mounting device. The electrolytic assembly can produce a hydroxyl radical having a strong oxidization activity by electrolyzing water by means of the electrolytic device to perform disinfection and sterilization, and can further heat a liquid to a required temperature by means of the heating member. The integration of the heating member and the electrolytic device can facilitate the arrangement of the structures of the heating member and the electrolytic device more compact and facilitate overall assembly/disassembly.

A method for predicting a dissolved oxygen level in treated seawater includes directing raw seawater from a fluid channel into a deaerator, directing an inert gas and an oxygen scavenger solution into the deaerator, thereby removing dissolved oxygen from the raw seawater such that treated seawater exits the deaerator, receiving information about a plurality of input parameters comprising a raw seawater flow rate, an inert gas flow rate, and an oxygen scavenger flow rate, implementing a neural network trained to predict the dissolved oxygen level of the treated seawater based on the plurality of input parameters and predicting, with the neural network, the dissolved oxygen level of the treated seawater based on the plurality of input parameters.

The present disclosure provides a packed rotating biological contactor and a method for ammonia nitrogen conversion based on the packed rotating biological contactor. The packing frame of the packed rotating biological contactor provided in the present disclosure is formed by engaging two meshed disks, the hollow structure thus formed can be filled with packings, increasing the tilling amount of the packings; the selection of packing types can improve the film-forming rate of microorganism and shows a good adsoiption effect on the microorganism, so that the biofilm formed on the surface of packings can resist the impact of water flow and avoid shedding. The selection of disk meshes and packing types also increases the specific surthce area of the packed rotating biological contactor, which can improve the acclimation efficiency of microorganisms and enable the packed rotating biological contactor to carry more microorganisms, thus forming biofilms with excellent performance.