Systems and methods for dewatering slurries having relatively high solids content such as earthen slurries are disclosed. In some embodiments, one or more transducer devices configured for acoustic spectroscopy and/or electroacoustic spectroscopy are used to determine a parameter related to the particle size distribution (e.g., specific surfaced area) and/or zeta potential of the slurry.

System and process for the treatment of water using a ferrate-based reduction-oxidation (redox) reactor, a clarifier, and a two-stage filtration system. Three treatment substrates can be used to treat water in the water treatment system and process, namely, a ferric compound(s), an acidic oxidant. and a flocculant-adsorbent.

A water treatment plant which performs water treatment using a water treatment device includes an imaging device, a processing device, and a control device. The imaging device images a water treatment environment of the water treatment device and outputs image data obtained by imaging. The processing device causes an arithmetic device which performs an arithmetic operation using one or more calculation models generated by machine learning to execute the arithmetic operation employing the image data output from the imaging device as input data of the one or more calculation models. The control device controls the water treatment device on the basis of output information output from the arithmetic device by executing the arithmetic operation.

The present disclosure relates, according to some embodiments, to methods of marker based direct integrity testing of at least one membrane comprising: (a) dosing a feed fluid of a loop with at least one marker comprising at least one challenge particle, the loop comprising: the feed fluid; a pump comprising an outlet stream; a membrane module comprising the at least one membrane and a membrane module outlet stream, wherein the membrane module is in fluid communication with the outlet stream; a marker recycle stream in fluid communication with the membrane module outlet stream and the pump; and a means to measure particle concentrations; (b) circulating the feed fluid through the membrane module at least once to produce a filtrate comprising a filtered at least one marker; (c) measuring a filtrate particle concentration of the filtered at least one filtered marker in the filtrate to produce a filtrate concentration measurement; and (d) calculating a log removal value from the filtrate concentration measurement and the feed concentration measurement; wherein the log removal value is less than about 3 ?m.

A plastic debris collection system intended for marine use is disclosed. The system includes: a buoyant ring structure; various surface sheathings of plastic disposed on the buoyant ring structure and configured to be joined to a plastic debris; and a heating device disposed on the buoyant ring structure and configured to heat and join the plastic debris to one of the various surface sheathings of plastic.

A system including groups of illuminators configured to provide adaptive irradiance within the ultraviolet spectrum to remove pathogens, particles, and anthropogenic activity from an air mass of a physical environment based on a detection of a presence of and amount of pathogens, particles, and anthropogenic activity in the air mass.

The present invention concerns a process for treating waters containing at least two different dissolved inorganic salts which do not precipitate and/or crystallize in the same conditions by precipitation and ballasted flocculation, in which the ballast is produced in situ.

A scale inhibitor includes a granular material composed of a particle containing a plurality of polyphosphate salts, the granular material has an asymmetric particle diameter distribution, and a particle diameter with a maximum frequency is smaller than an average particle diameter of the granular material.

A scale inhibitor includes a granular material composed of a particle containing a plurality of polyphosphate salts, the granular material has an asymmetric particle diameter distribution, and a particle diameter with a maximum frequency is smaller than an average particle diameter of the granular material.

Systems and methods for dewatering slurries having relatively high solids content such as earthen slurries are disclosed. In some embodiments, one or more transducer devices configured for acoustic spectroscopy and/or electroacoustic spectroscopy are used to determine a parameter related to the particle size distribution (e.g., specific surfaced area) and/or zeta potential of the slurry.