2results about How to "Cleaning" patented technology

The invention discloses a hydrogen production method for treating etching solution wastewater by using a photo-assisted single-chamber microbial electrolytic cell, and relates to the technical field of microbial electrochemistry and photocatalysis, and the hydrogen production method comprises the following steps: S1, mixing an anolyte of a stably operated double-chamber microbial fuel cell with etching solution tail end wastewater, adding the mixture into a reactor, and regularly replacing the solution until the anode potential is stable; s2, domesticating two ends of the electrode by using a direct-current power supply and external voltage until the potential of the cathode is reduced, and completing the domestication of the anode; and S3, the photocathode adopts a photocatalytic material, and organic matters are mineralized and nickel ions are removed while hydrogen is produced under an external voltage condition. The photo-assisted microbial electrolytic tank integrates the advantages of water electrolysis hydrogen production, photocatalytic hydrogen production and microbial electrolytic tank hydrogen production, overcomes the defect that a photocatalyst for photocatalytic hydrogen production is unstable, reduces the energy consumption required by microbial electrolytic tank hydrogen production, and recovers heavy metal mineralized refractory organics in etching liquid tail end wastewater. The method is a clean, efficient and low-consumption mode for treating wastewater and simultaneously producing hydrogen.

A flue gas desulfurization system. The conventional flue gas desulfurization system can cause the temperature of the clean flue gas to decrease, which is not conducive to the diffusion of the chimney emission, and even can cause the phenomenon of "gypsum rain" and the like to affect the surrounding environment. The utility model discloses a composition includes: flue gas waste heat heat release section heat exchanger, flue gas waste heat heat absorption section heat exchanger, dust remover and desulfurization system, the flue gas waste heat heat release section heat exchanger install at the out smoke pipe place after the dust remover, the flue gas waste heat heat absorption section heat exchanger install at the out smoke pipeline place after the desulfurization system, the water outlet of the flue gas waste heat heat release section heat exchanger is connected to the water inlet of the flue gas waste heat heat absorption section heat exchanger through the water outlet pipeline, and the water outlet of the flue gas waste heat heat absorption section heat exchanger is connected to the water inlet of the flue gas waste heat heat release section heat exchanger through the water inlet joint pipe. The utility model is used for flue gas desulfurization.