A method for preparing a SiO.sub.2-polyethersulfone conductive ultrafiltration membrane and the ultrafiltration membrane comprises hydrophilic CF cloth as the conductive membrane base, which provides an effective carrier for the preparation of a stable and efficient conductive membrane. After pretreatment, the silica solution was combined with the membrane via film scraping. Then phase catalysis and polymerization of PES onto the film obtained the final silica dioxide-polyethersulfone conductive ultrafiltration membrane. The silica solution was applied in the form of a coating on the hydrophilic CF cloth, in which silicon dioxide combined with the hydrophilic CF cloth, avoiding electrochemical interference. The modified hydrophilic CF cloth improved the hydrophilicity of the conductive film, with silica firmly attaching to PES and improving the stability of the SiO.sub.2-polyethersulfone conductive ultrafiltration membrane. After 8 cycles of reuse, the performance of the membrane remained stable.

A process for purifying washing waters of a production plant of the cosmetics sector includes subjecting the washing waters to an ultrafiltration treatment that produces an ultrafiltration concentrate and ultrafiltration water, and subjecting ultrafiltration water to a biological treatment with separation of sludges to be disposed of or further treated and treated water to be disposed of or to undergo subsequent treatments.

The disclosure discloses a system for treating high-salt high-organic wastewater and recovering energy, the system includes a cold wall-type reactor (6), a multi-level cyclone separator (16, 19, and 25), a waste liquid feeding system, an oxidant feeding system and a fuel feeding system; The cold wall-type reactor designed by the disclosure is formed by inner and outer double-housing structures, a cooling medium is fed into a gap between the inner housing and the outer housing of the reactor, the fluid on an inner wall surface of the inner housing of the reactor is cooled below a supercritical temperature of the water by using countercurrent heat exchange, blockage of the inorganic salts is effectively prevented. The disclosure is capable of realizing gradient utilization of the reaction heat of the high-salt high-organic wastewater supercritical water oxidation system, and improving a system energy recovery utilization ratio in the greatest degree.

A device for removing nitrogen and carbon using microporous aerated biofilms is provided, which relates to the field of waste water treatment technologies. The device includes a carbon removal reactor, a first sedimentation tank, an anaerobic ammonia oxidation nitrogen removal reactor, and a second sedimentation tank which are sequentially communicated. A plurality of groups of first microporous aerated biofilm assemblies are arranged in the carbon removal reactor. A plurality of groups of second microporous aerated biofilm assemblies are arranged in the anaerobic ammonia oxidation nitrogen removal reactor. The carbon removal reactor is communicated with the second microporous aerated biofilm assemblies. In the device, nitrogen and carbon are removed via microorganisms loaded by the first microporous aerated biofilm assemblies and the second microporous aerated biofilm assemblies. Sludge loss is reduced by the first sedimentation tank and the second sedimentation tank.

A method for treating wastewater or sludge includes treating a sludge having a first viscosity of from about 3,000 cP to about 15,000 cP by shearing the sludge to obtain a treated sludge having a second viscosity of less than 3,000 cP, where the second viscosity persists for a period of time. The sludge may be thickened by dewatering. A chemical agent may be added to the thickened sludge during, before, or after shearing. The treated sludge may further be pumped, transported, or otherwise handled.

The present disclosure provides a method of disposing of a residual pharmaceutical composition from an IV bag. The method of disposing also includes coupling the IV bag to a pharmaceutical dispenser coupler. The disposing also includes extracting at least a portion of the residual pharmaceutical composition from the IV bag through the pharmaceutical dispenser coupler. The disposing also includes treating at least a portion of the extracted pharmaceutical composition in one of a chemical and physical manner.

According to an example aspect of the present invention, there is provided a method of removing dissolved contaminants from an aqueous liquid. The aqueous liquid is contacted with an adsorbent which comprises a finely divided lignocellulosic material, which has been subjected to extraction to remove hemicellulose and/or other components therefrom, to bind at least a portion of the organic compounds to the adsorbent. Furthermore, the invention relates to a method for removing or separating dissolved contaminants from a liquid and to a method for producing a liquid containing hemicellulose and/or an adsorbent containing lignin and/or other components. In particular the invention concerns the use of an adsorbent lignocellulosic material for removing dissolved contaminants from a liquid.

A catalyst including an amorphous matrix of a metallic glass including iron and phosphorous; wherein when the catalyst performs a catalytic reaction with a reactant, the metallic glass catalyst activates at least some of the reactant, and at least a portion of the catalyst at a surface of the metallic glass matrix transforms to a surface layer including a material property different from that of the metallic glass matrix being covered by the surface layer; and wherein the surface layer is arranged to maintain an amorphous structure of the metallic glass matrix and to facilitate the catalytic reaction to occur at the surface layer.

An integrated device and method for treating toxic and refractory wastewater are provided. The integrated device includes an adjusting pool, a first-stage reactor, a second-stage reactor, a third-stage reactor, a coagulation sedimentation pool, and a biochemical reaction pool that are sequentially connected in series, and further includes an aeration blower. Each of the first-stage reactor and the third-stage reactor is an advanced oxidation reactor, and the second-stage reactor is a Fenton reactor. The coagulation sedimentation pool includes 2 to 4 stages, and each stage of the coagulation sedimentation pool includes a coagulation tank, a primary sedimentation tank, and a secondary sedimentation tank that are connected in series. The biochemical reaction pool includes an anoxic tank, an aerobic tank, a settling tank, and a clean water tank that are connected in series. The wastewater treatment method combines the integrated device for treating toxic and refractory wastewater with reasonable process parameters.

A forward osmosis system is disclosed which use a polymer switchable between a neutral form and an ionized form. The switchable polymer has a higher osmotic pressure at the ionized form than the neutral form, the ratio between the former and the latter is ≥2. There is also disclosed a method for treating the polymer such that the ratio is improved. Use of polymers for forward osmosis is also disclosed.