3 results about "Secondary treatment" patented technology

The invention relates to the technical field of water treatment, and particularly relates to and discloses a treatment method for recycling high-hardness and high-salinity waste water. The treatment method comprises the following steps: (1) removing organic matters, softening and removing salt for the first time by using a primary treatment system; (2) removing organic matters, softening and removing salt for the second time by using a secondary treatment system; (3) performing evaporation and freezing crystallization treatment on concentrated liquid. According to the treatment method for recycling high-hardness and high-salinity waste water, a physical and chemical treatment and membrane integrated technology and an evaporation and freezing crystallization technology are combined, high-quality water can be recycled, the resin is softened to regenerate internal supply of an acid and alkali medicament, industrial salt is generated, resources are utilized effectively and comprehensively,long-term effective and stable operation of the system is guaranteed, and the advantages of good treatment effect, stable and reliable operation and capability of completely utilizing resources are achieved.

The invention provides an earth surface shallow geothermal energy collecting and utilizing device which comprises a geothermal energy pipe. A box body is arranged above the geothermal energy pipe, a power generation device is arranged below the box body, a conveying device is arranged in the geothermal energy pipe, a containing box is fixedly installed in the box body, the pushing device is arranged in the containing box, the heat conduction plate is arranged in the containing box, and the rectangular box is fixedly installed at the top of the box body. According to the earth surface shallow geothermal energy collection and utilization device, through cooperative use of the power generation device and the conveying device, collection of geothermal energy is facilitated, output of electric power can be reduced during collection, and reduction of collection cost is facilitated; and through cooperative use of the pushing device and a heat conducting plate, waste heat generated by hot water can be collected conveniently, secondary treatment of the waste heat can be facilitated, rising of the atmospheric temperature caused by heat emission can be reduced, and through cooperative use of a storage device and a control device, the waste heat can be used and collected conveniently.