Some implementations can include method and system to collect and remove micro plastics from a water environment or ecosystem.

Methods and systems for concentrating and allowing for separation of nanoparticles from fluids use acoustically driven nanoparticle concentrators which have an aerogel as the reflecting material and include tuning capabilities to alter the location at which the particles are being concentrated.

An acoustophoretic device is disclosed. The acoustophoretic device includes an acoustic chamber, an ultrasonic transducer, and a reflector. The ultrasonic transducer includes a piezoelectric material driven by a voltage signal to create a multi-dimensional acoustic standing wave in the acoustic chamber emanating from a non-planar face of the piezoelectric material. A method for separating a second fluid or a particulate from a host fluid is also disclosed. The method includes flowing the mixture through an acoustophoretic device. A voltage signal is sent to drive the ultrasonic transducer to create the multi-dimensional acoustic standing wave in the acoustic chamber such that the second fluid or particulate is continuously trapped in the standing wave, and then agglomerates, aggregates, clumps, or coalesces together, and subsequently rises or settles out of the host fluid due to buoyancy or gravity forces, and exits the acoustic chamber.

Energy-efficient separation of particulates from fluids is based on determining particulate mass removal as a function of applied energy. Energy-efficient ultrasonic field powers and exposure durations are applied to a particulate containing fluid, and particles removed. In some cases, ultrasonic exposures are selected that provide the maximum particulate removal per applied energy.

A single stage clarifier mixing assembly includes a housing having a circular sidewall and a center axis, a mixing section in the housing, a clarifier section overlying and axially aligned with the mixing section along the center axis within the housing, an inlet delivering an inlet stream to the mixing section and an agitator. The agitator is adapted for mixing the inlet stream in the mixing chamber.

A wastewater dissolved-air floatation apparatus combined with a precipitation tank having sloped plates is proposed. The apparatus can reduce a transfer load according to the discharge of sludge, when the sludge is discharged through a discharge screw which is a discharge means, so as to enable sludge discharge efficiency to be maximized, has a cleaning means so as to enable components provided therein to be easily cleaned, maintained and managed through cleaning when the inside thereof is required to be cleaned, can control the discharge level of wastewater, which has been treated while sludge precipitation and suspended particle floatation are stably performed thereon inside a separation tank to which microbubbles are supplied, selectively blocks the supply of the microbubbles into the separation tank so as to use the separation tank as a precipitation tank.

A wastewater dissolved-air floatation apparatus combined with a precipitation tank having sloped plates is proposed. The apparatus can reduce a transfer load according to the discharge of sludge, when the sludge is discharged through a discharge screw which is a discharge means, so as to enable sludge discharge efficiency to be maximized, has a cleaning means so as to enable components provided therein to be easily cleaned, maintained and managed through cleaning when the inside thereof is required to be cleaned, can control the discharge level of wastewater, which has been treated while sludge precipitation and suspended particle floatation are stably performed thereon inside a separation tank to which microbubbles are supplied, selectively blocks the supply of the microbubbles into the separation tank so as to use the separation tank as a precipitation tank.

Thermoplastic polyurethane (TPU) compositions, methods for producing TPU compositions, methods of using TPU compositions, and apparatuses produced therefrom are disclosed. Disclosed TPU compositions include a thermoplastic polyurethane polymer, a heat stabilizer, a flow agent, and a filler material. The filler may be a glass fiber. Disclosed TPU compositions have improved thermal stability and improved flow properties suitable for injection molding of articles of manufacture having a large plurality of fine openings or pores. Articles produced from the composition have superior thermal stability, abrasion resistance, and chemical resistance. Example articles include screening members for vibratory screening machines.

A system can include a multi-material fluid having a mixture of a first material and a second material. The system can also include a first vessel into which the multi-material fluid is disposed. The system can further include a first sonication device disposed, at least in part, in the multi-material fluid in the first vessel. The first sonication device, when operating, can emit ultrasound waves into the multi-material fluid. The ultrasound waves separate the first material and the second material from each other in the first vessel.

A water decalcification system includes an electroactive polymer (EAP) layer having at least one EAP film, a first electrode contacting the EAP layer and configured to contact a surface of an appliance capable of having at least one interior surface with limescales built up thereon, a second electrode contacting the EAP layer, and an electrical connector configured to connect to an electrical source in electrical communication with the first and the second electrode and configured to apply an electrical voltage to the first and the second electrode. The at least one EAP film deforms in response to the electrical voltage to generate ultrasound vibrational energies transmissive to decalcify the limescales.