Denitrification biological film nitrogen removal bioreactor and using method and application thereof
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A bioreactor, denitrifying microorganism technology, applied in chemical instruments and methods, biological treatment devices, biological water/sewage treatment, etc., can solve the problem of high cost, achieve removal, improve operation stability and denitrification efficiency, The effect of promoting biodegradation
Inactive Publication Date: 2019-02-19
宁波水思清环境科技有限公司
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The efficiency of pure biological denitrification method will be limited by the low concentration of nutrients in water,
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Embodiment 1
[0021] The influent water is groundwater in Beijing, adding NaNO 3 Make the concentrations 50 mg / L and adjust the pH of the influent to 7.5. Carry out denitrification treatment according to the following steps:
[0022] (1) Start-up of the reactor:
[0023] Fill the PBS granules in the packed bed of the reactor, the filling height is 75% of the height of the reactor, adopt the bottom water inlet method, inoculate denitrifying microorganisms, adjust the temperature at 25°C-30°C, and wait for the denitrification effect to stabilize (outlet The nitrate concentration in the water is in a steady state), and the reactor start-up is completed.
[0024] (2) Operation of the reactor:
[0025] After the reactor is started up, it starts to operate normally, the operating temperature is 15°C-40°C, the water containing nitrate enters the denitrification biofilm denitrification reactor, the flow rate of the water is adjusted by the water pump, and the hydraulic retention time is 1 h-3 h ...
Embodiment 2
[0030] The influent water is groundwater in Beijing, adding NaNO 3 and 2,4-DCP (2,4-dichlorophenol) at concentrations of 50 mg / L and 10 μg / L, respectively. Process according to the steps of Example 1, and the water quality before and after treatment is as shown in Table 2.
[0031] Table 2 Water quality changes before and after treatment
[0032]
Embodiment 3
[0034] The influent water is groundwater in Beijing, adding NaNO 3 and 2,4-DCP (2,4-dichlorophenol) at concentrations of 100 mg / L and 5 μg / L, respectively. Process according to the steps of Example 1, and the water quality before and after treatment is as shown in Table 3.
[0035] Table 3 Water quality changes before and after treatment
[0036]
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Abstract
The invention discloses a denitrification biological film nitrogen removal bioreactor and a using method and application thereof. The system comprises a water inlet water tank, a water pump, a denitrification biological film nitrogen removal bioreactor and a water outlet water tank. One end of the water pump is connected with the water inlet water tank, the other end is connected with the bottom of the denitrification biological film nitrogen removal bioreactor, and the upper portion of the denitrification biological film nitrogen removal bioreactor is connected with the water outlet water tank. By adopting an upstream type packed bed bioreactor, a water insoluble biodegradable polymer material is adopted as a filler as a carrier for adhesion growth of denitrification microorganisms, the stable efficient denitrification biological film is formed on the surface, meanwhile, the biological film can be adopted as an electron donor of the denitrification microorganism for reducing nitrate nitrogen. While denitrification biological nitrogen removal is performed, due to the adsorption and condensation effect of the solid carbon source and the degrading effect of microorganisms in the denitrification biological film, nitrates and micro toxic organic contaminations in water can be removed at the same time.
Description
technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a denitrification biofilm denitrification bioreactor, its use method and application. Background technique [0002] Due to the extensive use of chemical fertilizers and pesticides in agriculture, nitrate pollution in my country's water environment is relatively serious. Removing nitrate pollution in water bodies and controlling eutrophication in water bodies are severe challenges in the field of water treatment. In addition, my country's chemical industry, printing and dyeing, pharmaceutical and other industries discharge various toxic organic industrial wastewater, while conventional wastewater treatment processes, such as activated carbon adsorption, advanced oxidation, membrane separation, etc., have a low removal rate for trace toxic organic substances. my country's water environment is double polluted by nitrates and toxic organic pollutants. ...
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