The system for a continuous dewatering recirculating for removing particulate such as coal combustion residue from a water stream. The system includes multiple dewatering and recirculation containers, each having a submerged flight conveyor and lamella settlings plate located therein, at least one dewatering and recirculation container receives ash water stream overflow.

A mud cleaning system may include a system inlet carrying mud from a wellbore, a heater, a fluid separating system, and a system outlet carrying the mud to a holding vessel. The system inlet, the heater, the separator, and the system outlet may be fluidly connected such that mud flows from the system inlet, into the heater and the separator, and then out the system outlet.

A system for recovery of animal byproducts and providing water reuse from an animal processing plant waste stream. In one embodiment of the invention there is an equalization tank forming part of an animal processing plant that is mechanically filtered to recover animal byproducts from a water mixture in the equalization tank. In another aspect of the invention there is a skimmer tank that contains a skimmer mixture with water and animal byproducts. The system mechanically separates the animal byproducts from the skimmer mixture in a manner that is suitable for human consumption. The system also allows the separated water to be reused in the animal processing plant.

A foldable and removable partition assembly having both a collapsed configuration, which enables storage and transport of the foldable and removable partition assembly, and an expanded configuration which enables installation and use of the foldable and removable partition assembly within a septic tank. The foldable and removable partition assembly includes a framework that supports first and second partially overlapped baffles that form part of a sludge chamber of the septic tank.

A feedwell assembly (1) having a feedwell (3) and feed dilution apparatus (27) is characterised in that the feed dilution apparatus (27) includes a centrifugal impeller (16) arranged within a pump housing (9). The pump housing is arranged below a weir box (12) having an upper opening and a spill lip (12b). The spill lip (12b) is arranged at an upper periphery of the weir box (12). The spill lip (12b) is configured to be arranged below an air-liquid interface (20) during operation such that there is a depth of submergence (26) between the spill lip (12b) and the air-liquid interface (20).

A method and a system for selecting and retaining solids with superior settling characteristics, the method comprising feeding wastewater to an input of a processor that carries out a treatment process on the wastewater, outputting processed wastewater at an output of the processor, feeding the processed wastewater to an input of a gravimetric selector that selects solids with superior settling characteristics, and outputting a recycle stream at a first output of the gravimetric selector back to the processor.

The invention relates to the field of petroleum processing, particularly to a method for processing heavy petroleum feedstock. The method for processing heavy petroleum feedstock comprises the steps of: slurry-phase hydrocracking (SPH) of a feedstock including a heavy petroleum feedstock and a carbon additive, followed by separation into a SPH-subjected feedstock stream and a heavy residue stream, wherein the heavy residue stream is a slurry of an unconverted high-boiling residue and a spent carbon additive; hydrocracking of the feedstock hydrocracking products obtained at the SPH step, in a gas phase with a fixed bed catalyst, followed by fractionation of resulting hydrocracking products; performing a method for purifying an unconverted residue of a heavy petroleum feedstock hydrocracking process from a spent carbon additive to obtain a spent carbon additive and a purified unconverted residue of a heavy petroleum feedstock hydrocracking. The technical effect resides in increasing the efficiency of separation of the spent carbon additive from the mixture of the unconverted residue with the solvent, ensuring stable equipment operation with a specified performance and preventing the clogging of equipment by deposits, thus avoiding long-term equipment downtime and labor-intensive work required to clean deposits from the equipment.

A shot peening apparatus includes a first tank. The first tank includes a swirl flow generating mechanism and a suction port. The swirl flow generating mechanism swirls a waste liquid in the circumferential direction. The suction port is disposed at the axial center of the first tank. The suction port opens toward a bottom wall and suctions the waste liquid. A plurality of blade members are provided inside the first tank. The plurality of blade members hinders the waste liquid from swirling in the first tank.

A cooling pond system and related methods of improving cooling performance in a cooling pond system using one or more submerged dams to increase cooling performance within the cooling pond system, and increase salt precipitation or recovery. The inclusion of one or more submerged dams within an existing cooling pond system can reduce an outflow temperature by 1-5 F. as compared to the same cooling pond system without any submerged dams. In addition or alternatively, pond depth can be controlled to enhance flow mixing and convection cooling. As the temperature is reduced throughout the cooling pond system, more potassium containing salts are precipitated from the brine solution resulting in increased production or recovery within the same cooling footprint.

A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.