Rapid starting method of membrane bioreactor shortcut nitration technology
A membrane bioreactor and short-range nitrification technology is applied in the field of short-range nitrification rapid start-up of membrane bioreactors at room temperature, which can solve the problems of slow start-up of short-range nitrification, low treatment load, difficult long-term stable operation, etc. Addressing slow-growing, easy-to-implement effects
Active Publication Date: 2013-07-31
BEIJING UNIV OF TECH
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[0004] Therefore, the rapid start-up strategy of MBR short-cut nitrification is the key technology for MBR to be applied to autotrophic denitrification, which will solve the problems of slow start-up, low processing load and difficulty in long-term stable operation of short-cut nitrification.
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[0015] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.
[0016] The reactor used in the present invention is a membrane bioreactor (MBR), the effective volume of the reactor is 13L, and the reactor has a built-in polyvinylidene fluoride (PVDF) hollow fiber membrane module. An aeration device is installed at the bottom of the reactor, and the DO concentration in the wastewater of the reactor can be controlled by adjusting the amount of aeration. The built-in agitator ensures that the mud and water are mixed evenly. The inlet water pump is connected to the liquid level controller to keep the liquid level constant, and the effluent water is sucked by the peristaltic pump. The test used synthetic wastewater as the test water, and the influent matrix mainly included 0.33~0.94g / L (NH4) 4 ) 2 SO 4 , 0.94~3.36g / L NaHCO 3 , while adding 0.068g / L of CaCl 2 , 0.15g...
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A rapid starting method of a membrane bioreactor shortcut nitration technology belongs to the municipal sewage processing and recycling fields. The starting method of a shortcut nitration technology in a membrane bioreactor (MBR) comprises the following steps: inoculating returned sludge of a municipal sewage plant, and recovering the activities of sludge under a nutrient-rich condition; gradually increasing the ammonia nitrogen concentration while keeping the water inlet flow unchanged under an oxygen-limited condition to increase the ammonia nitrogen load of inlet water and successfully start shortcut nitration; and adjusting the HRT to 6.2-7.5h under a same running condition to successfully start partial shortcut nitration. The rapid starting method of the shortcut nitration in the MBR provides a way for the long-term efficient and stable running of the shortcut nitration in the MBR.
Description
technical field [0001] The invention belongs to the field of urban sewage treatment and resource utilization. Specifically, it relates to a method specially used for rapid start-up of short-range nitrification in a normal temperature membrane bioreactor (MBR). Background technique [0002] With the growth of economic level and the intensification of human activities, water pollution is becoming more and more serious, among which nitrogen pollution is a major hazard, which has a great impact on the natural environment and human health. Autotrophic denitrification process is a new biological denitrification technology discovered in recent years, mainly based on the realization of short-range nitrification and anammox. In the nitrification stage, nitrous accumulation is achieved, thereby reducing the reaction steps and oxygen consumption, while the anammox process can simultaneously remove ammonia nitrogen and nitrous without consuming organic carbon sources. The autotrophic ...
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CPCY02W10/10
Inventor 李冬梁瑜海张肖静范丹张玉龙周元正张翠丹吴青苏庆岭门绚杨胤何永平曾辉平张杰
Owner BEIJING UNIV OF TECH