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147results about How to "Full circulation" patented technology

Technique and system for zero discharging treatment of electroplating effluent

The invention discloses a technique and a system for zero discharging treatment of electroplating effluent. The system comprises a material classifying pre-treatment system, a biochemical comprehensive treatment system, a membrane method system, a membrane concentrated liquor vaporization system and a sludge classifying treatment system which are connected with each other in turn, wherein the sludge classifying treatment system is connected with the material classifying pre-treatment system and the biochemical comprehensive treatment system; the raw wastewater enters into the material classifying pre-treatment system; water generated by the membrane method system is recycled; the condensed liquid from the membrane concentrated liquor vaporization system is re-injected into the material classifying pre-treatment system. According to the technique provided by the invention, the wastewater is firstly treated in classifying form, so that the heavy pollution ions, such as, chromium, cyanogen, nickel, and the like, and the oily matters in the wastewater are effectively removed, and then the biochemical comprehensive treatment system is used for further treating, and lastly, the RO+SuperRo two-level combination mode is utilized to achieve the gross recovery at 94%, and meanwhile, the liquid amount for evaporation treatment is less than 6% of the gross wastewater quantity, the cost of the evaporation treatment is saved, the sludge is recycled, the waste of resources is avoided and the sludge treating cost is saved.
Owner:CHENGDU MEIFUTE MEMBRANE TECHNOLOGY CO LTD

Steam oven

The invention relates to a steam oven, which comprises a door body assembly, a control panel assembly, an atomizer assembly, a water tank assembly, an oven body assembly provided with a cooking stove cavity, a back hot air convection heat generating assembly, a blow-off valve assembly and a casing, wherein the oven body assembly is installed in a hollow cavity of the casing, and the atomizer assembly is installed beside the water tank assembly. The atomizer assembly comprises an atomizer, an atomizer barrel, an air blower and an atomizer barrel cover, wherein the atomizer is installed in the atomizer barrel, the atomizer barrel cover is fixed at the top of the atomizer barrel, the air blower is arranged in the atomizer barrel and fixed on the inner side of the atomizer barrel cover, and a water mist outlet of the atomizer is connected with a steam inlet arranged on the oven body assembly through a pipeline and a check valve used for preventing backflow of high-pressure steam. The atomizer of the steam oven can lead water to be changed into water mist fast, and water mist is heated through a heat generation pipe on the lower portion and heated circularly through a convection assembly fast to be changed into steam. The stem oven is simple and reasonable in structure, convenient to assemble and low in cost.
Owner:GUANGDONG XINBAO ELECTRICAL APPLIANCES HLDG CO LTD

Rolling brush type micro-arc oxidation processing method and device

The invention relates to a rolling brush type micro-arc oxidation processing method and device. According to the method, a roller brush type cathode rolls and brushes on the surface of an anode workpiece back and forth, so that the micro-arc oxidation processing from the local surface to the whole surface of the workpiece is achieved. The device comprises a micro-arc oxidation power supply, the anode workpiece, the roller brush type cathode, a solution recovering device, a microarc oxidation electrolyte solution, an electrolyte solution tank, a submersible pump and a circulating cooling water tank, wherein the roller brush type cathode comprises a stainless steel cylinder, a rubber cotton cover, a conductive part, a liquid guiding part and a plastic handle. The device has the characteristics of simple structure, convenience in carrying, flexibility in operation and the like; with the adoption of the method and the device for microarc oxidation processing, the micro-arc oxidation processing of surfaces of a large-size large-area workpiece and a device difficult to disassemble, as well as the rapid repairing of a local broken area is easily achieved in a continuous manner, so that the resources are saved, the cost is reduced and the efficiency is improved; and the method and the device are particularly suitable for microarc oxidation processing of workpieces made of magnesium, aluminum, titanium and their alloys.
Owner:SOUTH CHINA UNIV OF TECH

Garbage landfill rapid stabilization system

The invention discloses a garbage landfill rapid stabilization system. A leachate horizontal guide and discharge system is arranged at the bottom of a garbage pile, an air exhaust and injection systemand a leachate irrigation and drainage system are inserted into the garbage pile, and the leachate horizontal guide and discharge system and the leachate irrigation and drainage system communicate with a leachate collection well. One end of an air exhaust and injection pipeline in the exhaust and injection system is vertically inserted into the garbage pile, the other end of the air exhaust and injection pipeline is connected with a second control system, and the other end of the second control system is connected with an air injection fan and an air exhaust fan. One end of the leachate irrigation and drainage system is vertically inserted into the garbage pile of a garbage landfill, the other end of the leachate irrigation and drainage system is connected with a third control system, andthe other end of the third control system is connected with a leachate pumping and discharging pump and a leachate lifting pump. By means of the system, sufficient oxygen is provided for garbage landfill, and it is ensured that garbage is subjected to aerobic biochemical degradation. The landfill becomes a composite purification reactor by refilling leachate, nutrient substances in the leachate can be fully circulated in the garbage pile, and the growth metabolic efficiency of microorganisms is effectively improved.
Owner:NANJING WONDUX ENVIRONMENTAL PROTECTION TECH CO LTD

Air conditioner system based on solar energy and underground cold water

The invention discloses an air conditioner system based on solar energy and underground cold water. The air conditioner system based on solar energy and underground cold water comprises an underground cold water circulating system, a solar water heater circulating system and an indoor heat exchange system. According to the underground cold water circulating system, low-temperature underground water is pumped to a heat preservation water tank through a make-up pump, stored and then pumped to a top plate heat exchange device of the indoor heat exchange system through a circulating water pump to exchange heat so as to reduce the indoor temperature; and according to the solar water heater circulating system, the water temperature is increased through solar energy, the water is conveyed into a heat storage water tank and stored, then the water is conveyed into a heat exchange device through a circulating water pump, the hot water obtained through heat exchange is supplied to a floor radiation heat exchange device to increase the indoor temperature, and meanwhile the hot water in the heat storage water tank can also be used as domestic hot water. According to a solar fresh air cooling and dehumidifying system, a solar cell panel generates and supplies electricity to a semiconductor refrigerating chip set for providing electricity for cooling a water source, the indoor temperature is lowered through the cooled low-temperature water by means of a fresh air ventilator, and the humidity is adjusted. The air conditioner system is simple in structure, renewable energy sources are reasonably used, the water resources are recycled, and the cost is saved.
Owner:WUHAN UNIV OF SCI & TECH
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