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 an ozone ceramic membrane combined process water treatment device and water treatment method. By organic combination of a coagulant adding mechanism, an ozone generator, a ceramic membrane pool, an activated carbon pool, a disinfectant adding mechanism and the like, and compared with a conventional regular water treatment device, the ozone ceramic membrane combined process water treatment device can effectively remove newly-developed trace organic pollutants in water, and guarantees water quality safety. The ozone ceramic membrane combined process water treatment devicecan adopt integrated and modular design, and has the advantages of short process flow, compact structure, small land occupation area and good effluent quality.

The invention discloses a precise-control intelligent chlorine supplementing and adding disinfection control system for secondary water supply, and belongs to the field of disinfection of secondary water supply water tanks. The intelligent chlorine supplementing and adding disinfection control system for secondary water supply comprises a secondary water supply water tank, a residual chlorine real-time sampling and detecting system, a distributed circulating dosing system, a chlorine supplementing and adding system and an artificial intelligence controller. The distributed circulating dosing system is used for uniformly dispersing a disinfectant to all positions of the water tank, so that the disinfectant is quickly and uniformly mixed in the water tank, and theaccuracy and reliability of detection data of the residual chlorine real-time sampling detection system are ensured. Meanwhile, a stable water flow environment is provided through the micro sampling pump and the circulating groove, the residual chlorine value in the water tank is accurately detected in cooperation with the high-precision residual chlorine sensor, real-time residual chlorine detection without waste water and maintenance is achieved, and accurate data support is provided for follow-up chlorine supplementation, so the dosing amount of the chlorine supplementing and adding system is safer and more accurate, the control precision of residual chlorine in the secondary water supply water tank is improved, and the quality safety of secondary water supply is effectively guaranteed.

The invention discloses a water treatment method for removing halogenated nitromethane in water by ultraviolet light, and relates to a method for removing highly toxic nitrogenous disinfection byproduct namely halogenated nitromethane. The method is as below: irradiating UV light to water containing halogenated nitromethane and stirring. The invention does not require multiple removal, expensive oxidant or catalyst, does not produce secondary pollution, can use cheap ultraviolet spectrum light source to quickly remove halogenated nitromethane. A reactor can be conveniently designed to meet the needs of various water, so as to facilitate management and guarantee the security of water quality. The method can be applied to depth treatment of halogenated nitromethane-containing drinking water, sewage, swimming pool water and reclaimed water, which is subjected to conventional water plant treatment including flocculation, sedimentation, filtration, adsorption and sterilization, thereby reducing the concentration of toxic and harmful halogenated nitromethane; and the method is especially conducive to the guarantee water quality safety of drinking water and swimming water.

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 discloses a treatment method and a novel composite water purifying agent for purifying low-temperature and low-turbidity water. The treatment method includes steps of (1), effectively distributing raw water which is delivered from rivers or reservoirs to water distributing wells of water purification plants by pumps, then feeding the raw water into sedimentation tanks to carry out sedimentation treatment on the raw water, adding 20-30mg of the composite water purifying agent into each 1L of waste water at stages, removing low-temperature and low-turbidity impurities by the composite water purifying agent to guarantee effective removal results, then uniformly mixing the composite water purifying agent with the waste water, and allowing the waste water to stand still for 35-45min; (2), further reducing the turbidity of the raw water and pollutants in the raw water at filtering stages after sedimentation treatment is carried out on the raw water; (3), carrying out advanced treatment stages on the raw water by the aid of ozone and activated carbon to expectedly meet 106 outlet water quality indexes of drinking water sanitation standards GB 5749-2006; (4), dewatering sludge, generated at the various stages, in a concentrated manner and then allowing the sludge to be conveyed to landfill.

The invention discloses a fabricated underground water taking device applicable to a civil air defence space and a construction method. The fabricated underground water taking device comprises a tubewell passing through an underground clay stratum and a water-containing layer; the tube well is provided with filtering holes on the tube wall of the water-containing layer; a pump room is arranged above the tube well; a water manifold is arranged in the tube well; a head part of the water manifold is positioned in the tube well on the water-containing layer section; a tail part of the water manifold is positioned in the pump room, and is connected with a water taking pump; underground water pumped by the water taking pump flows into an inner pool via the water manifold; a valve is mounted atthe water outlet end of the water manifold; an outer pool is arranged on the periphery of the inner pool; a purification wall is arranged between the inner pool and the outer pool; and purification bins are arranged at intervals in the purification wall. According to the invention, water taking, water purification and storage are integrated, a case of no available water when an external water source is cut off in an emergency is avoided, and meanwhile, a purification device can effectively ensure water quality safety of underground water. The fabricated underground water taking device is applicable to a civil air defence underground structure of which site hydrogeological conditions accord with wartime water use requirements.

The invention discloses an efficient engineering pond farming method for paralichthys olivaceus and belongs to the technical field of aquaculture. The efficient engineering pond farming method includes building of an engineering pond farming system, treatment of a farming pond, stocking of seedlings, precision feeding technology of baits, water environment management, micro-ecology control technology and harvest of commercial fish. Factory-like management and efficient ecological farming of the farming pond of the paralichthys olivaceus can be realized, farming production can be increased by more than 9 times, farming efficiency can be greatly improved, and application promotion potential is great.

The invention discloses automatic algae intercepting equipment capable of adjusting the algae intercepting depth without halt. The equipment comprises a frame door groove rail fixed on a hydraulic structure; the frame door groove rail is arranged in the vertical direction; a lifting net frame is slidingly connected into the frame door groove rail; a chain transmission structure is mounted on the lifting net frame, and is provided with a stainless steel filter screen plate; a lifting mechanism and a circulating algae intercepting driving device are mounted on the frame door groove rail; and thelifting mechanism is used for driving the lifting net frame to move up and down along the frame door groove rail. The equipment greatly reduces the labor cost, relieves the labor intensity, effectively reduces the content of algae in canal water, and acts as an important guarantee measure for removing the algae breeding and guaranteeing the main canal 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.

The invention provides a hydrocyclone pretreatment type aerated grit chamber desanding system, belonging to the technical field of sewage treatment. According to the invention, a hydrocyclone desanderis additionally arranged on a grit suction bridge of an aerated grit chamber, and a mixed solution is pre-separated under the combined action of the hydrocyclone desander by virtue of the power of asand pump; then, further precipitation, sand-water separation and sand discharge are carried out via a transformed sand-water separator; and a planar water distribution weir groove and an inclined plate precipitation device are additionally arranged in the sand-water separator, the planar water distribution weir grooves are uniformly distributed to reduce the water inlet flow speed, and the inclined plate precipitation device lengthens a water flow path to further improve the separation efficiency of the sand-water separator, so the sand content of sewage at the discharge port of the sand-water separator is greatly reduced.