53results about How to "Guarantee water quality safety" patented technology

The invention discloses a building water supply pipeline circulation system and method for secondary water supply quality guarantee and belongs to the field of drinking water treatment. The system comprises a building water supply inlet pipe, a lifting or water storage device, a flow measurement or detection device, a backflow controller, a building water supply vertical pipe, a building indoor pipeline and faucet, a backflow pipe, an ultraviolet / titanium dioxide sterilizer, a backflow electromagnetic valve and a check valve. In the normal water consumption process, municipal water passes through the building water supply inlet pipe, the lifting or water storage device, the flow measurement or detection device and the building water supply vertical pipe to reach the building indoor pipeline or faucet. When the hydraulic retention time of tap water for secondary water supply reaches 2 h or above, water in the building water supply vertical pipe passes through the backflow pipe and the ultraviolet / titanium dioxide sterilizer to flow into the building water supply indoor pipe or the water storage device again, is mixed with fresh tap water and then is used by users again through a secondary water supply system, and therefore the biological safety and chemical safety of the tap water in the secondary water supply system are ensured.

The invention provides a light promoting dehalogenation compound medicament / light combined method for removing halogenated organic matters in water, which relates to a method for removing halogenated organic matters in water. The invention overcomes various defects existing in the process of removing halogenated organic matters in water by using the current gas stripping method, activated carbon adsorption method, electrochemical removing method, advanced oxidation method, transition metal catalytic reduction method, vacuum ultraviolet technique or permeable reactive barrier technique. The method of the invention comprises the following steps: adding the light promoting dehalogenation compound medicament into the water containing halogenated organic matters for stirring, and then, carrying out optical radiation. The method of the invention does not need multi-stage removal, does not need expensive oxidants and catalysts, does not generate secondary pollution, does not need expensive vacuum ultraviolet light sources and high-energy radiation sources, can utilize common and cheap ultraviolet pop light sources or even expanding to visible light sources, improves the utilization efficiency of the light energy, can quickly remove the halogenated organic matters, can conveniently design a reactor, meets the requirements of various water bodies, is convenient in management, and can ensure the safety of the water quality.

The invention relates to the adsorption material preparation field, and concretely relates to a defluorination carbon electrode and its preparation method. Raw materials of the defluorination carbon electrode comprise a hot melt adhesive and a conductive carbon material, wherein the mass ratio of the hot melt adhesive to the conductive carbon material is 65-95:5-35; and the hot melt adhesive have types comprising an ethylene-vinyl acetate (EVA) copolymer type and / or an ethylene-vinyl alcohol (EVOH) type. The preparation method of the defluorination carbon electrode comprises the following steps: 1, uniformly mixing the conductive carbon material with the hot melt adhesive according to the above mass ratio to obtain mixed powder; and 2, putting the mixed powder into a molding die, carrying out hot press molding at a temperature of 100-180DEG C under a pressure of 10-30MPa, and carbonizing at 400-950DEG C for 2-4h. The electrode prepared in the invention has the advantages of large effective specific surface area, strong conductivity, no dissolving-out of metals or toxic organic matters, no secondary pollution after the use in the defluorination treatment of drinking water, and water safety guarantee.

The invention discloses a treatment method of a water body in a coal mine underground reservoir. The method comprises the following steps: 1 dividing a water body into a suspended solid over-standard water body, a heavy metal over-standard water body and an organic matter over-standard water body according to the water conditions of water bodies entering the underground reservoir from different underground mine water sources; 2 correspondingly dividing the underground reservoir into a suspended solid pollution treatment reservoir for removing suspended solids, a heavy metal pollution treatment reservoir for removing heavy metals and a reagent treatment reservoir for removing organic matters and inorganic matters through reagents; and 3 introducing the suspended solid over-standard water body into the suspended solid pollution treatment reservoir, processing the suspended solid over-standard water body into a qualified water body through direct filtration, introducing the heavy metal over-standard water body into the heavy metal pollution treatment reservoir, processing the heavy metal over-standard water body into a qualified water body through a modular water treatment method, introducing the organic matter over-standard water body into the reagent treatment reservoir, and processing the organic matter over-standard water body into the qualified water by adding a reagent.