A method for isolating and selecting Trichoderma Virens with an aerobic denitrification function and a method for remediating a water body with a low carbon-to-nitrogen ratio using the Trichoderma Virens are provided. Compared with the prior art, the biological treatment adopted by the present disclosure can allow the relatively-complete removal of nitrates without producing a residue, and exhibits advantages such as low cost, efficiency, and eco-friendliness. Further, the biological treatment adopted by the present disclosure can enhance the resistance of the fungus to toxic compounds and harsh environments, significantly promote the removal of nitrogen and organic matters in a water body, improve a decontamination ability of a water body, and increase the diversity of microorganisms in a water body, thereby accelerating the promotion of remediation of a water quality of a water body with a low carbon-to-nitrogen ratio. Therefore, the present disclosure has an extensive application potential.

A method of oxidizing a component of an aqueous medium is provided. The method includes adding an effective amount of an oxidizing composition to the aqueous medium. The oxidizing composition includes an ingredient, such as hydrogen peroxide, a percarbonate salt, a peroxy compound, a chlorite or alkali metal salt thereof, a chlorate or alkali metal salt thereof, or any combination thereof. The method also includes oxidizing the component. The component may be a metal, a mineral, a microbial metabolite, an organic molecule, or combination thereof. The method also includes modulating the application of the oxidizing composition based on a measured aqueous medium parameter.

Methods, systems, and compositions for oxidation are provided. The method comprises combining a macrocyclic ligand and metal complex catalyst, an electrolyte, the substrate, and water to form an aqueous composition. The method comprises applying an electrical voltage to the aqueous composition and oxidizing the substrate in the presence of the catalyst.

The present invention discloses a solvent assisted cavitation process for the removal of pollutants from waste water comprising treating waste water in a batch or continuous process in a cavitation device fed with 1-10% of an immiscible solvent resulting in a reduction in concentration of ammoniacal nitrogen and/or COD in the waste water.

An anode, a flow cell including the anode, and a method for electrocatalytic treatment of bio-oil and/or wastewater are disclosed. The anode comprises RuO.sub.2 particles on a titanium support. The method includes flowing a process stream through the flow cell in the absence of added hydrogen, at a temperature of 0 C. to 50 C. and atmospheric pressure, and applying a potential across the flow cell such that the anode is positive with respect to the cathode, thereby electrocatalytically oxidizing compounds in the process stream to produce a treated process stream at the anode and generating hydrogen gas as a byproduct at the cathode.

A filtration membrane including a first layer having a triamine-functionalized polysilicate mesoporous material, a second layer including a polysulfone; and a third layer including a polyester terephthalate is described. An orthosilicate group of the triamine-functionalized polysilicate mesoporous material is bonded to a silicon atom of a silicon-containing triamine to form a triamine-functionalized polysilicate backbone, wherein the silicon-containing triamine and one or more tetramines are covalently crosslinked with terephthaloyl chloride to form a polyamide, and wherein the triamine-functionalized polysilicate mesoporous material has a hierarchical structure of MCM-41. The membrane is adapted for use selected from the use group consisting of oil and water separation, water treatment, desalination, and pharmaceutical filtration.

The present invention relates to the technical field of wastewater treatment, and discloses a method for enhanced bio-treatment of refractory organic pollutants with photo-excited holes as electron acceptors. The method comprises the following steps: 1) placing a composite semiconductor-coated carrier material into a reactor, introducing wastewater into the reactor inoculated with anaerobic sludge, and allowing the composite semiconductor-coated carrier material to be immersed in the wastewater, wherein the composite semiconductor-coated carrier material comprises a conductive carrier and composite semiconductor materials loaded on the conductive carrier; 2) carrying out habituated culture on the anaerobic sludge for a period of time, and loading a biological membrane on the surface of the composite semiconductor materials, to construct a photo-excited hole enhanced bioreactor; and 3) treating the refractory pollutants in the wastewater by utilizing the reactor under irradiation.

A process for concentrating amine water is achieved by dehydrating the amine water by membrane distillation at a temperature ranging from 30 C. to 95 C. and at a pressure ranging from 1.0 bar to 1.5 absolute bar.

The present application provides a bioenhancer based on a molybdenum disulfide composite material, and a preparation method and an application thereof. The main components of the molybdenum disulfide composite material include molybdenum disulfide and graphene, and a ratio of a mass of the molybdenum disulfide composite material to a volume of the activated sludge in the bioenhancer is (1100) g:5000 mL; the molybdenum disulfide crystal phase with the above-mentioned enhancement characteristics includes 1T crystal phase and 2H crystal phase.

The present invention discloses a straight-line sewage treatment system for enhanced treatment of low-carbon-to-nitrogen ratio (C/N) domestic sewage, including a sewage intake tank, an enhanced denitrification tank through a pipeline, an effluent outlet of the enhanced denitrification tank, an effluent pipe, a first storage tank, a second storage tank, and a disinfection tank.