A system to treat and desalinate wastewater using a low energy ejector desalination system (LEEDS), which employs a static liquid-gas ejector and maximum heat integration in the water treatment system.

A distillation and dehydration system is provided that produces an anhydrous organic solvent. The provided system includes vapor recompression (e.g., a mechanical or thermal vapor recompression unit) to recover heat from a rectification-distillation section (e.g., a rectifier/stripper column). The addition of vapor recompression enables further heat recovery within a stream by increasing the condensation temperature and pressure of that stream and later using its latent heat by condensing it.

Disclosed herein is a sludge drying system comprising: a system input for receiving a wet sludge stream, wherein the wet sludge stream comprises water and solid material; a first dryer arranged to receive, at an input of the first dryer, the wet sludge stream and to heat the wet sludge stream such that at least part of the water in the wet sludge stream is evaporated to thereby generate evaporate and a partially dry sludge stream, wherein the first dryer is an indirectly heated rotating disc dryer that comprises a first output for outputting evaporate and a second output for outputting the partially dry sludge stream; a second dryer that is an indirectly heated rotating disc dryer and is arranged to receive, at a first input of the second dryer, a stream that is dependent on the partially dry sludge stream output from the first dryer and to receive, at a second input of the second dryer, the evaporate from the first dryer, wherein the second dryer is arranged to use to the received evaporate to indirectly heat the received stream at the first input to thereby generate and output a substantially dry sludge stream; and a system output for outputting at least part of the substantially dry sludge stream from the system.

A processing method for perennially and deeply polluted sludge containing oils and water, waste residues, or oil sands in natural oil mines, and a processing system thereof. In the method, a solid substance containing oils and water is in full contact with an organic liquid solvent with a low boiling point and a weak polarity or no polarity at room temperature under pressurized condition to extract oil and water from the solid substance to the liquid, the organic solvent with low boiling point and low latent heat is easily separated from oil and water in the liquid after solid-liquid separation by decompression or heating evaporation, the gas solvent is compressed and condensed for recycling, the extracted oil and water are subjected to oil-water separation, and the extracted oil may be used as fuel or used for refining.

The present disclosure is concerned with sea water demineralization. More specifically, to systems, methods, and apparatus for water demineralization and purification, including the removal of dissolved solids and contaminants from sea water, industrial water with mineral content, and brackish water.

A method of recovering solids from water-based effluent. A first step involves evaporating wastewater effluent containing a liquid contaminant, such as ammonium to recover a concentrated solution and a water effluent stream. Where the water effluent stream includes solids, further step can be taken to dry the wastewater effluent further to recover solids, such as by using a thin plate evaporator and a heat exchanger disk evaporator.

Methods and systems are described for treating a fluid that includes a particulate fraction and a soluble fraction, such as wastewater fluid including biosolids. The treatment includes biochemically transforming solids in the particulate fraction of the fluid in a biochemical process while simultaneously subjecting the fluid to a vacuum pressure, and evaporating off at least a portion of the soluble fraction of the fluid and thereby thickening a remaining portion of the fluid. A residence time of the particulate fraction can be controlled to be at least 25% greater than a residence time of the soluble fraction, for example. A solids content of the particulate fraction can be controlled to be in a range of from 2% to 99%, for example.

A system to treat and desalinate wastewater using a low energy ejector desalination system (LEEDS), which employs a static liquid-gas ejector and maximum heat integration in the water treatment system.

The present disclosure is concerned with sea water demineralization. More specifically, to systems, methods, and apparatus for water demineralization and purification, including the removal of dissolved solids and contaminants from sea water, industrial water with mineral content, and brackish water.

A processing method for perennially and deeply polluted sludge containing oils and water, waste residues, or oil sands in natural oil mines, and a processing system thereof. In the method, a solid substance containing oils and water is in full contact with an organic liquid solvent with a low boiling point and a weak polarity or no polarity at room temperature under pressurized condition to extract oil and water from the solid substance to the liquid, the organic solvent with low boiling point and low latent heat is easily separated from oil and water in the liquid after solid-liquid separation by decompression or heating evaporation, the gas solvent is compressed and condensed for recycling, the extracted oil and water are subjected to oil-water separation, and the extracted oil may be used as fuel or used for refining.