High-concentration chemical wastewater resourceful integrated treatment technology

Abstract

The invention relates to a high-concentration chemical wastewater resourceful integrated treatment technology. The high-concentration chemical wastewater resourceful integrated treatment technology is implemented by the following steps: performing membrane filtering treatment on high-concentration chemical wastewater; introducing the wastewater filtered by an ultrafiltration membrane into an electro-catalysis oxidization system; introducing the wastewater being subjected to electro-catalysis oxidization into an evaporating system; introducing evaporation effluent into a recycling system; introducing an evaporation mother solution into a divided crystalizing system; and recycling inorganic salt in the wastewater through a divided crystalizing technology. By adopting the high-concentration chemical wastewater resourceful integrated treatment technology, a treatment process combining ultrafiltration membrane filtering, electro-catalysis, evaporation and divided crystallization is adopted, so that up-to-standard treatment of the wastewater is realized; meanwhile, resourceful utilization of the wastewater is realized; the high-concentration chemical wastewater resourceful integrated treatment technology has the advantages of advanced process, high efficiency and stable and reliable effect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection water treatment, and in particular relates to a resource-based integrated treatment technology for high-concentration chemical wastewater, which realizes the recycling of water resources and inorganic salts while effectively treating high-concentration chemical wastewater, so as to reduce waste of resources and recover costs . Background technique [0002] High-concentration chemical wastewater has a high concentration of pollutants and many components that are difficult to treat. Due to the water quality characteristics of soluble solids such as toxic and harmful components and inorganic salts, it belongs to highly polluted organic wastewater that is difficult to treat. If chemical wastewater is discharged directly without treatment, it will not only pollute water resources, but also have toxic effects on human body and aquatic organisms. Once consumed by humans and animals, it w...

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Problems solved by technology

[0005] Chinese patent (application number: 201511021752.7) discloses a chemical wastewater treatment method, using ionizing radiation catalysis to generate strong oxidative hydroxyl radicals to treat chemical wastewater, but this method is only for acrylonitrile, which contains a single pollutant. Wastewater treatment cannot meet the treatment requirements of high-concentration chemical wastewater with various pollutants

[0015] ①Complicated process: The existing technology usually requires multiple treatment processes to gradually remove the corresponding pollutants, resulting in complex processes, long treatment cycles and high costs;

[0016] ②Secondary pollution: In the multi-channel treatment process of the prior art, it is usually necessary to add different treatment reagents, and the addition of corresponding treatment reagents causes secondary pollution of the water body, thus increasing the difficulty of subsequent treatment;

[0017] ③In the existing technology, the treated water is usually discharged directly. Although zero discharge is achieved, a large amount of water resources and inorganic salts are wasted due to the inability to recycle and reuse, resulting in high treatment costs

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