A process of treatment of carbonaceous material, such as wastewater sludge or organic waste, includes performing a thermal treatment of the carbonaceous material, thereby providing thermally treated carbonaceous material, cooling the thermally treated carbonaceous material, thereby providing cooled carbonaceous material, the cooling being performed using a vacuum cooling procedure, and performing a post-treatment of the cooled carbonaceous material, and at least one carbonaceous material degassing.

The present application pertains to systems and methods for desalination. In one embodiment the system employs a first storage reservoir configured to be near the surface of a body of water and configured to store a low density fluid. A second storage reservoir is configured to be located below the surface of the body of water. A desalination system is operably connected to the second reservoir. Desalinated water is produced by allowing desalination permeate to displace low density fluid in the second reservoir and transfer the low density fluid from the second reservoir to the first reservoir. Desalinated water is exported by transferring low density fluid from the first reservoir into the second reservoir to displace desalinated water from the second reservoir into a water export pipeline.

Systems and methods for separating components from a fluid stream are described. The systems and methods described herein may be specifically well suited for separating solids, hydrocarbons, chemicals, non-evaporable components, etc., from wastewater produced by oil and gas recovery. The systems and methods may generally include the use of a heat exchanger through which a fluid stream is passed to thereby evaporate some or all of the fluid stream. The heated stream exiting the heat exchanger may include vapor, liquids and/or solids. This heated stream is then subjected to phase separation to separate a vapor stream from a liquid/solids stream. The vapor stream is then transported back to the heat exchanger where it is used to transfer heat from the vapor stream to the fluid stream. During the operation of the heat exchanger, a scraping system may be used to scrape the one or more surfaces of the passage through which the fluid stream flows in order to prevent buildup of solids and liquids thereon.

The present disclosure discloses a saline wastewater treatment system using solar-assisted heat pump. A method of solar thermal collector coupled with a heat pump can treat saline wastewater at low carbon and high efficiency, and industrial salt and fresh water can be obtained by concentration. The system includes a wastewater pretreatment system, a wastewater heating system, and a wastewater evaporation and concentration treatment system. The wastewater pretreatment system is connected to the wastewater heating system; and the wastewater heating system is connected to the wastewater evaporation and concentration treatment system.

The method p1 for converting osmotic energy into hydraulic energy and the method p2 for desalination, include pressurisation/depressurisation and isochoric washing of an aqueous solution containing a salt in the presence of a selective hydrophobic nanoporous material of which the nanoporous volume within the material is only accessible to fresh water and which has a nanoporosity volume fraction ranging from 0.2 to 1 so as to convert osmotic energy into hydraulic energy or conversely to desalinate water, preferably sea water or brine.

The present disclosure provides methods, compositions, kits and apparatuses for stabilizing membranes, membrane proteins, and/or membranes containing membrane proteins using hydrophobin.

A process for treating waste water, including the steps of extracting by forward osmosis treated water from a wastewater feed stream and transferring it to a saline draw stream, and extracting from the saline draw stream treated water by a reverse osmosis process.

A steam heating type sewage treatment device includes: a treatment tank connected to a sewage supply pipe, a stirring device disposed in the treatment tank; a steam heating device disposed on an outer surface of the treatment tank; a vacuuming device fixed to a top of the treatment tank and connected to the treatment tank via a first connecting pipe; a heating device connected to the treatment tank by a second connecting pipe and connected to a steam storage tank by a third connecting pipe, and a fourth connecting pipe connected between the steam input pipe and the steam storage tank to recycle the steam. The heating device pressurizes or heats the steam entering the vacuuming device and the connecting pipes, and the heated steam is guided by pipes into the steam heating device, thus achieving the effect of steam recycling.

A compound multi effect distillation (MED) system of integrated backward and forward fed MED systems. Heated concentrate from the hottest effect of the backward fed MED system is delivered as feed to the hottest effect in the forward fed MED system, to generate a more concentrated brine than possible using any of the systems alone. Furthermore, coupling the systems creates additional operational advantages and increases distillation efficiency.

Underwater systems for data center cooling and water desalination are provided. Aspects of the systems include a data center subunit and a desalination subunit that are co-located with each other at an underwater location, where the desalination subunit is configured to receive warm water output from the data center. Aspects of the invention also include methods for cooling a data center and desalinating water using underwater systems as described herein.