Two-stage deep-bed upward flow composite filter material biological filter and method for treating low-temperature high-ammonium-nitrogen polluted water by utilizing same

Abstract

The invention relates to a two-stage deep-bed upward flow composite filter material biological filter and a method for treating low-temperature high-ammonium-nitrogen polluted water by utilizing the same, and relates to a water treatment device and a water treatment method. The method can be used for solving the problems of the traditional method for treating low-temperature heavily-polluted water that the capability for degrading ammonium-nitrogen and organic matters in the water is remarkably lowered, the organic matters and ammonium-nitrogen pollutants in the water cannot be degraded, and the sudden increment of the pollutant concentration cannot be handled. An apparatus comprises a first-stage upward-flow biological filter, a second-stage upward-flow biological filter, a nitrogen charging unit, a composite filter material layer, a main body filter material layer, a first carrying layer and a second carrying layer. The method comprises the following steps: carrying out the treatment on the low-temperature high-ammonium-nitrogen polluted water passing by a water inlet end, an ozone contact oxidation unit, an ozone catalytic oxidation unit, the first-stage upward-flow biological filter, the nitrogen charging unit and the secondary upward-flow biological filter, obtaining the water with pollutants removed, and discharging the purified water by virtue of a water outlet end for external supply. The method for treating the low-temperature high-ammonium-nitrogen polluted water by utilizing the two-stage deep-bed upward flow composite filter material biological filter is applicable to treating the low-temperature high-ammonium-nitrogen polluted water.

Description

technical field [0001] The invention relates to a water treatment device and a water treatment method. Background technique [0002] The eutrophication of surface water in our country is widespread, especially during the low temperature period in northern winter, the difficulty of water supply treatment is increasing, and ammonia nitrogen pollution has become an important phenomenon in water sources. Therefore, the removal of ammonia nitrogen in water during low temperature and heavy pollution has become an urgent need for water supply plants. solved puzzles. The traditional biofilter filtration process has a low removal rate of ammonia nitrogen at low temperature, and the water purification effect is poor, and the effluent is difficult to meet the relevant national water quality standards for drinking water quality. Zeolite can be used to adsorb ammonia nitrogen in water, but it is mostly used by adding zeolite powder to water in industrial production. This is because the...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the degradation ability of ammonia nitrogen and organic matter in the water is significantly reduced when the existing method is used to treat low-temperature heavily polluted water, and the organic matter and ammonia nitrogen pollutants in the water cannot be degraded and removed, and the problem that the concentration of pollutants cannot be dealt with suddenly increases, and provides A dual-stage deep-bed flow-through composite filter material biofilter and its method for treating low-temperature, high-ammonia-nitrogen polluted water

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