A system for converting biosolids to fertilizer comprising: a storage tank for holding biosolids; a conveyor operably connected to the storage tank for conveying the biosolids from the storage tank to a pressurized screener, wherein the pressurized screener selectively eliminates unwanted debris from the biosolids; a second conveyor operably connected to the pressurized screener to convey the biosolids to a centrifuge, the centrifuge operatively configured to remove water from the biosolids; a third conveyor operably connected to the centrifuge to convey the biosolids to a feeding chamber, a self-leveling conveyer position in the feeding chamber configured to deliver the biosolids to a nip feeder operatively positioned in the feeding chamber to selectively biosolids from the feeding chamber to a nip, wherein the nip is a gap between a first and second dryer drums; the first and second dryer drums operatively positioned to rotate and draw biosolids from the nip feeder into the nip, wherein a first and second scrapers are operably positioned to remove biosolids from the first and second dryer drums as they rotate, wherein the first and second dryer drums are selectively heated with steam provided by a boiler; a fourth conveyor positioned underneath the dryer drums to collect the biosolids after they pass through the nip and to convey the biosolids to a pelletizer configured to form the biosolids into pellets; a fifth conveyor operably connected to the pelletizer to convey the pellets to a cooling chamber.

The invention relates to a method and a device for improving the biodegradability of an organic sludge. It comprises at least two treatment cycles each of a total duration of between around 8 s and around 20 s and each comprising a first step of producing a first hydrolysed sludge emulsion in a first, reduced zone, by injecting a gas into said reduced zone. a second step of abruptly expanding the emulsion in a second zone—the expansion zone—and a third step of recovering the emulsion via a third, restriction zone.

A system for cleanup of coal ash mixed with water from an original settling pond comprises a dredge configured to lift the coal ash mixed with water from beneath the water level, a transport line configured to receive the coal ash mixed with water from the dredge and move the coal ash mixed with water out of the original settling pond, and at least one designed dewatering cell configured to receive the coal ash mixed with water from the transport line. A bulk solids handler is configured to remove the coal ash from the dewatering cell after a predetermined portion of the water has been removed, and a conveyor is configured to receive the removed coal ash from the bulk solids handler and transport the coal ash to a predetermined delivery point.

A system and process for closed loop system for removing particulate from a coal fired power wash water waste stream comprising a submerged flight conveyor for receiving used wash water, a bleed line for diverting wash water from the submerged flight conveyor, a filter for removing particulate from the diverter wash water, and pumps to recirculate the wash water on a loop through the system.

An automatic constant-temperature dehumidification device, comprising at least two dehumidification heat pump assemblies having two refrigerant modules and an air module. The refrigerant module comprises a primary refrigerating module and a secondary refrigerating module, the primary refrigerating module and the secondary refrigerating module each comprising a condenser, an evaporator and a compressor. An air inlet pipe of the air module is connected to a hot side of a heat regenerator, the hot side of the heat regenerator is connected to the evaporators through ventilation pipes, the evaporators are connected to a cold side of the heat regenerator through ventilation pipes, and the cold side of the heat regenerator is connected to one of the condensers through a ventilation pipe.

The present invention relates to a process and device for selectively removal of deflocculated sludge below a pre-selected size from a sludge mixed liquor. The invention resides in the concept of removing from the sludge mixed liquor deflocculated sludge. The removal is preferably carried out by a two-step separation providing a fraction comprising sludge flocs, substantially freed from deflocculated sludge, and a fraction containing mostly deflocculated sludge. The fraction comprising sludge flocs is returned into the sludge mixed liquor, while the fraction containing mostly deflocculated sludge is removed from the system.

The present invention relates to a process and device for selectively removal of deflocculated sludge below a pre-selected size from a sludge mixed liquor. The invention resides in the concept of removing from the sludge mixed liquor deflocculated sludge. The removal is preferably carried out by a two-step separation providing a fraction comprising sludge flocs, substantially freed from deflocculated sludge, and a fraction containing mostly deflocculated sludge. The fraction comprising sludge flocs is returned into the sludge mixed liquor, while the fraction containing mostly deflocculated sludge is removed from the system.

Aspects of the present application relate to dewatering methods, systems, apparatus, and associated components thereof. In one implementation, a plow for a sludge dewatering system includes a blade. The blade includes a leading edge, and a first wing swept downward in a vertical direction and outward in a first horizontal direction relative to the leading edge. The blade also includes a second wing swept downward in the vertical direction and outward in a second horizontal direction relative to the leading edge. The second horizontal direction is opposite of the first horizontal direction.

A system for transferring marine life within an aquaculture facility including a plurality of segregated storage facilities each containing water for marine life, maintained within a predetermined temperature range and supported at independent ground levels. The storage facilities are successively disposed and structured to contain marine life at different stages of growth. A transfer assembly includes a path of fluid flow interconnecting successive ones of said plurality of storage facilities in fluid communication with one another, wherein at least a majority of a length of said path of fluid flow is disposed beneath the independent ground levels at a predetermined depth, which is sufficient to facilitate maintenance of the path of fluid flow within the predetermined temperature range, via geothermal cooling. The transfer assembly may also connect a holding facility, which may be dimensioned and structured to transfer mature marine life, possibly on an on-demand basis, to the harvesting facility.

A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.