Reverse osmosis concentrated water enhanced treatment method and device

Abstract

Disclosed is a reverse osmosis concentrated water enhanced treatment method and device. The reverse osmosis concentrated water enhanced treatment method comprises adding hypochlorite or hypochlorous acid or chloramine into reverse osmosis concentrated water entering into an ultraviolet reactor for reaction under ultraviolet and mixing effects, wherein ultraviolet rays synergizes with the hypochlorite or hypochlorous acid or chloramine to produce hydroxyl radicals and chlorine radicals; preferably, also, adding sulfate oxidizing agent and oxidation promoter of copper ions into the reverse osmosis concentrated water for synergism to produce hydroxyl radicals and sulfate radicals to effectively remove organic matters; discharging water into a bioreactor, according the concentration of nitratein the discharged water and redox potential, adding in carbon sources to remove organic matters and nitrate nitrogen, then performing aerobiotic aeration reaction to remove residual organic matters,and add in porous iron-based filler into the bioreactor to promote electron transfer and further to promote nitrification and denitrification; passing the discharged water through microalgae / wetland to further remove pollutants such as phosphate.

Description

Technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method and equipment for enhanced treatment of reverse osmosis concentrated water. Background technique [0002] The reverse osmosis process, as a new type of wastewater regeneration treatment process, can effectively control organic matter, inorganic salts, etc., and produce high-quality reclaimed water. However, the reverse osmosis process enriches organics, inorganic salts, etc. into concentrated water, and the treatment and disposal of concentrated water has become an important bottleneck restricting the use of reverse osmosis. [0003] Reverse osmosis concentrated water is a kind of highly biologically toxic wastewater containing high concentration of organic matter. Direct or indirect discharge to natural water bodies will cause adverse environmental impacts. Therefore, the reverse osmosis concentrated water must be treated before it is discharged. At present, reverse...

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Problems solved by technology

However, there are disadvantages such as high processing cost, large energy consumption, and may produce secondary pollution

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