Method and device for removing sudden ammonia nitrogen pollution through combination of modified zeolite and biological contact oxidation
A technology of biological contact and modified zeolite, which is applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problems of low infrastructure cost, lack of rapid response, low removal rate of ammonia nitrogen, etc., and achieve operating costs Low cost, small footprint and low operating costs
Pending Publication Date: 2021-11-23
GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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Problems solved by technology
The main advantages of the biological contact oxidation method are large processing capacity, less sludge generation, and low infrastructure costs; the disadvantage is that its operation effect is affected by many factors, especially the water temperature has a greater impact on the removal of ammonia nitrogen. When the water temperature is lower than 5 At -8°C, the ammonia nitrogen removal rate is low, and it lacks the ability to respond quickly to the sudden increase of ammonia nitrogen in the source water
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Embodiment 1
[0056] The slightly polluted source water from the west section of the Pearl River in Guangzhou was selected and collected by water intake pumps. figure 1 The process shown in the treatment process, the water temperature is 20°C, and the treatment scale is 1m 3 / h.
[0057] Set the adjustment pool to be 1.0×1.0×2.0, with a volume of 2.0m 3 The square pool body, the pool body covers an area of 1.0m 2 . The regulating tank operates in the way of water inflow and outflow in the middle, and is equipped with an overflow port and a vent valve.
[0058] The adsorption stirring tank is 1.2m in diameter, 1.85m in height and 1.5m in effective volume 3 The cylindrical shell, the single pool covers an area of 1.13m 2 , 5 adsorption stirring tanks occupy a total area of 5.65m 2 . It includes a water inlet pipe, a water outlet pipe, a flushing water inlet pipe, a backwash water outlet pipe and an overflow port. The water inlet pipe and the water outlet pipe are respectively co...
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The invention discloses a method and device for removing sudden ammonia nitrogen pollution through combination of modified zeolite and biological contact oxidation. The device comprises a zeolite adsorption module and a biological contact oxidation module, wherein the zeolite adsorption module is provided with a plurality of adsorption stirring tanks which are arranged side by side and run in turn, when the zeolite in one adsorption stirring tank reaches adsorption saturation, the adsorption stirring tank stops running, the zeolite is replaced, the other adsorption stirring tank is switched to start running, all the adsorption stirring tanks are circularly run in sequence, and continuous water inlet is ensured. According to the invention, sudden high-concentration ammonia nitrogen can be effectively removed, the effluent quality ammonia nitrogen can be ensured to reach the standard, the problems that the existing treatment process cannot cope with sudden impact load and cannot ensure the effluent quality to reach the standard are solved, the operation cost is low, the investment is small, the ammonia nitrogen concentration in the effluent quality is lower than 0.5 mg / L, and the effluent quality meets the Sanitary Standard for Drinking Water.
Description
technical field [0001] The invention relates to the field of water supply treatment, in particular to a method and device for removing sudden ammonia nitrogen pollution by combining modified zeolite and biological contact oxidation. Background technique [0002] Nitrogen is the main element to be removed in micro-polluted water treatment, and it exists in raw water in the form of organic nitrogen, ammonia nitrogen, nitrite nitrogen and nitrate nitrogen. As one of inorganic nitrogen, ammonia nitrogen is an important factor leading to eutrophication of water bodies. Ammonia nitrogen has certain harm to the human body. Ammonia nitrogen enters the human body to synthesize nitroso compounds, which can induce cancer. [0003] The conventional treatment methods of water supply are mainly coagulation, sedimentation, filtration and disinfection. Its main function is to remove colloids, suspended impurities and bacteria in the water to meet the water standard requirements. However, ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C02F9/14C02F101/16
CPCC02F3/00C02F1/281C02F2209/14C02F2201/002C02F2101/16
Inventor 孙志民刘颖诗董浩韬李俊义张锐坚任鹏飞李振兴郭英楠陈绎浪
Owner GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD