2results about How to "Realize separate recycling" patented technology

The utility model discloses a kind of hydraulic cavitation reinforced cement sand cyclone separation devices, including hydraulic cavitation pipe, feed assembly and cyclone separation component;One end of the hydraulic cavitation pipe is connected with the feed assembly, and the other end is connected with the cyclone separation component. The feed assembly includes silt mixed liquid inlet pipe, the silt mixed liquid inlet pipe is connected with the hydraulic cavitation pipe, and inlet valve is connected on the silt mixed liquid inlet pipe. The feed assembly further includes air compressor, and the air compressor output end is connected with the hydraulic cavitation pipe by first pipeline. The cyclone separation component includes cyclone separator, the inlet of the cyclone separator is connected with the hydraulic cavitation pipe by second pipeline, and the lower end of the cyclone separator is connected with sludge discharge valve, and the utility model aims at overcoming the defects of the prior art to provide a kind of hydraulic cavitation reinforced cement sand cyclone separation device, improve the recycling rate of sand particle.

This invention discloses a method for selectively recovering copper, lead, and arsenic from acidic mining wastewater, comprising the following steps: 1) preparing iron-manganese oxides with strong stability under acidic conditions; 2) converting acidic mining wastewater containing copper, cadmium, lead, arsenic, and zinc into copper-cadmium-zinc enriched wastewater and lead-arsenic enriched iron-manganese oxides; 3) converting the lead-arsenic enriched iron-manganese oxides into a lead-containing solution and arsenic-enriched iron-manganese oxides; 4) converting the arsenic-enriched iron-manganese oxides into an arsenic-containing solution and arsenic-loaded iron-manganese oxides; 5) converting copper-cadmium-zinc enriched wastewater into cadmium-zinc enriched wastewater and copper-enriched iron-manganese oxides; 6) desorbing copper from the copper-enriched iron-manganese oxides to obtain a copper-containing solution. This invention can separately enrich and recover copper, lead, and arsenic from acidic mining wastewater, achieving the recovery and utilization of heavy metal resources while treating heavy metal-polluted wastewater, and has a very broad application prospect.