Apparatus and method for entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane
A technology for whole-process autotrophic denitrification and digested sludge is applied in the field of devices and methods for whole-process autotrophic denitrification of digested sludge dewatering liquid biofilm, which can solve the problem of low denitrification efficiency, increased sewage denitrification cost, and denitrification efficiency. It is difficult to improve and other problems to achieve the effect of improving the denitrification efficiency
Active Publication Date: 2008-10-29
BEIJING DRAINAGE GRP CO LTD +1
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Problems solved by technology
The existing biochemical treatment process treats the reflux of the digested sludge dehydration liquid together with the raw water, which greatly increases the nitrogen load of sewage treatment, making it difficult to improve the nitrogen removal efficiency
The metabolic characteristics of anaerobic digestion of sludge and the traditional process of returning the dewatered liquid of digested sludge ...
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[0026] Below in conjunction with accompanying drawing and embodiment, the patent of the present application is further described: embodiment: as shown in Figure 1, the device for digesting sludge dewatering liquid biofilm whole process autotrophic denitrification, consists of digesting sludge dewatering liquid pool, pre-anoxic It is composed of denitrification tank, biofilm short-range nitrification tank, sedimentation tank, intermediate pool, and biofilm anammox tank. The effective volume of the digested sludge dewatering liquid tank is 700L, the effective volume of the pre-anoxic denitrification tank, the biofilm short-range nitrification tank and the biofilm anammox tank are 8L, 32L and 8.5L respectively, and the effective volume of the intermediate tank is 20L, the effective volume of the sedimentation tank is 15L. The size of the pre-anoxic denitrification tank is Φ×H=8cm×200cm, and the size of the biofilm short-range nitrification tank is L×B×H=80cm×10cm×55cm, which are ...
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The invention relates to a biofilm full-rang autotrophic nitrogen removal device of digested sludge dehydrolysis liquid and a method thereof; wherein, the device is provided with a digested sludge dehydrolysis liquid pool, a pre-hypoxia denitrification pool, a short-range biofilm nitrification pool, a sedimentation pool, an intermediate pool and a biofilm anaerobic ammonia oxidation pool; the method consists of the following steps: 1. the pre-hypoxia denitrification pool and the short-range biofilm nitrification pool are started to operate; 2. the biofilm anaerobic ammonia oxidation pool is started; 3. the biofilm full-rang autotrophic nitrogen removal system of the digested sludge dehydrolysis liquid is operated in series. The device is suitable for biological nitrogen removal of wastewater containing high ammonia nitrogen, such as the digested sludge dehydrolysis liquid, late landfill percolate, coking wastewater, monosodium glutamate wastewater, etc. The device realizes efficient biological nitrogen removal of wastewater with high NH4<+>-N and low ratio of C/N, greatly decreases the construction and operation cost of nitrogen removal of wastewater, reduces alkalinity demand of the nitrification, runs stably, operates easily and has stronger shock resistance loading capability; meanwhile, the device is strongly adaptable to temperature fluctuation and toxic substances, which is easy to recover after being restrained.
Description
technical field [0001] The invention belongs to the technical field of biological denitrification of high-concentration ammonia-nitrogen wastewater, specifically a short-range nitrification reaction of digested sludge dehydration liquid rich in ammonia nitrogen in urban sewage plants through dynamic control in a biofilm short-range nitrification tank, and then without organic carbon sources. Under the conditions of existence, in the biofilm anaerobic ammonium oxidation tank, the nitrogen in the dehydration liquid of digested sludge is removed by anaerobic ammonium oxidation reaction (ANAMMOX, AnaerobicAmmonia Oxidation) to complete the whole process of autotrophic biological denitrification, which is suitable for dehydration of digested sludge Biological denitrification of high ammonia nitrogen wastewater such as liquid, late landfill leachate, coking wastewater, and monosodium glutamate wastewater. Background technique [0002] my country's water pollution continues to inte...
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Inventor 张树军王洪臣甘一萍彭永臻常江马富国杨岸明周军赵颖孟凡能
Owner BEIJING DRAINAGE GRP CO LTD
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