A system and method of treating wastewater. In one embodiment, the system comprises a biological reactor fluidly connected to a source of wastewater and having a treated wastewater outlet, a fixed film biological reactor connected to the source of wastewater and having a fixed film effluent outlet, and a ballasted system fluidly connected to the fixed film effluent outlet. The ballasted system may comprise a ballast reactor tank configured to provide a ballasted effluent, and a source of ballast material fluidly connected to an inlet of the ballast reactor tank. The system may further comprise a bypass line having an inlet fluidly connected to the source of wastewater, a first outlet fluidly connected to the ballasted system, and a second outlet fluidly connected to the fixed film biological reactor, the bypass line configured to bypass the fixed film biological reactor.

A photovoltaic evaporation and distillation system for the recycling of wastewater to potable water is disclosed herein. The system is comprised of six components that work in conjunction to produce both a source of reusable water for indoor appliances that produce greywater (or irrigation use), and potable water.

A decentralized wastewater reuse design utilizing trickling filter (TF)-based aerobic bioreactors responds to the growing need for efficient energy usage per gallon of wastewater treated and/or pound of biological oxygen demand (BOD) removed from processed influent. A facility based on this design is able to adjust power consumption as needed due to external factors, such as utility rate scheduling, grid availability, and/or renewable power sources, without compromising effluent quality performance or increasing energy intensity. The facility improves on past TF applications by overcoming physical hydraulic constraints and expanding the capacity for both aerobic nitrification and anaerobic denitrification throughout the system. This design reduces grid dependency and overall power utilization per gallon of wastewater treated and/or per pound of BOD removal in alignment with climate-oriented policies that are expected to further exert pressure on states and municipalities to shift to carbon-free energy sources supplying all of their water/wastewater facility operations.

A decentralized wastewater reuse design utilizing trickling filter (TF)-based aerobic bioreactors responds to the growing need for efficient energy usage per gallon of wastewater treated and/or pound of biological oxygen demand (BOD) removed from processed influent. A facility based on this design is able to adjust power consumption as needed due to external factors, such as utility rate scheduling, grid availability, and/or renewable power sources, without compromising effluent quality performance or increasing energy intensity. The facility improves on past TF applications by overcoming physical hydraulic constraints and expanding the capacity for both aerobic nitrification and anaerobic denitrification throughout the system. This design reduces grid dependency and overall power utilization per gallon of wastewater treated and/or per pound of BOD removal in alignment with climate-oriented policies that are expected to further exert pressure on states and municipalities to shift to carbon-free energy sources supplying all of their water/wastewater facility operations.

A system and method of treating wastewater. In one embodiment, the system comprises a biological reactor fluidly connected to a source of wastewater and having a treated wastewater outlet, a fixed film biological reactor connected to the source of wastewater and having a fixed film effluent outlet, and a ballasted system fluidly connected to the fixed film effluent outlet. The ballasted system may comprise a ballast reactor tank configured to provide a ballasted effluent, and a source of ballast material fluidly connected to an inlet of the ballast reactor tank. The system may further comprise a bypass line having an inlet fluidly connected to the source of wastewater, a first outlet fluidly connected to the ballasted system, and a second outlet fluidly connected to the fixed film biological reactor, the bypass line configured to bypass the fixed film biological reactor.

A system and method of treating wastewater. In one embodiment, the system comprises a biological reactor fluidly connected to a source of wastewater and having a treated wastewater outlet, a fixed film biological reactor connected to the source of wastewater and having a fixed film effluent outlet, and a ballasted system fluidly connected to the fixed film effluent outlet. The ballasted system may comprise a ballast reactor tank configured to provide a ballasted effluent, and a source of ballast material fluidly connected to an inlet of the ballast reactor tank. The system may further comprise a bypass line having an inlet fluidly connected to the source of wastewater, a first outlet fluidly connected to the ballasted system, and a second outlet fluidly connected to the fixed film biological reactor, the bypass line configured to bypass the fixed film biological reactor.

A method for controlled biomass densification in a biological treatment of a raw influent, includes a step of subjecting the raw influent to a biological treatment of free suspended biomass, thereby producing a biomass comprising activated sludge; a step of separation and/or clarification of the activated sludge, thereby producing an effluent and a RAS; a step of extracting at least part of the RAS and/or part of the activated sludge as a first source of a WAS; a step of external density-based selection of at least part of the RAS and/or part of the activated sludge, thereby generating an overflow intended to be extracted as a second source of WAS, and an underflow comprising dense biomass aggregates; a step of producing and/or sustaining dense biomass aggregates, such as aerobic granular sludge or biofilm, by a dense biomass aggregates generating process, with at least part of the raw influent; a step of subjecting the dense biomass aggregates to the biological treatment; a step of subjecting the dense biomass aggregates of the underflow to the biological treatment and/or to the dense biomass aggregates generating process; thereby obtaining a densified biomass.

A method for remediating wastewater formed by water and per- and poly-fluoroalkyl substances (PFAS) using a wastewater treatment system that includes a collecting unit, a dewatering unit, a drying unit, and a baking unit. Wastewater provided to the collecting unit is dosed by adding a compound to the wastewater in an amount that is sufficient to cause the PFAS to separate from the water and to form a sludge. The sludge is dewatered with the dewatering from a first dryness level a second dryness level. The dewatered sludge is then dried in the drying unit from the first dryness level to a third dryness level. The dried sludge is then baked at a sufficiently high enough temperature that chemical bonds of at least a portion of the PFAS is destroyed.

A method for remediating wastewater formed by water and per- and poly-fluoroalkyl substances (PFAS) using a wastewater treatment system that includes a collecting unit, a dewatering unit, a drying unit, and a baking unit. Wastewater provided to the collecting unit is dosed by adding a compound to the wastewater in an amount that is sufficient to cause the PFAS to separate from the water and to form a sludge. The sludge is dewatered with the dewatering from a first dryness level a second dryness level. The dewatered sludge is then dried in the drying unit from the first dryness level to a third dryness level. The dried sludge is then baked at a sufficiently high enough temperature that chemical bonds of at least a portion of the PFAS is destroyed.

Systems and methods for treating liquid effluent, the effluent including contaminants capable of biodegradation, using biodegradation beds. While the effluent holding tank is housed within a containment facility in the event of holding tank rupture or leakage, the biodegradation beds and an excess effluent sump are housed adjacent but outside the containment facility. In some aspects, the biodegradation beds are covered with generally transparent covers to allow sunlight to heat the bed contents and effluent for degradation and evaporation purposes while avoiding introduction of unwanted ambient precipitation.