Upflow anaerobic sludge bed + anoxic/aerobic + anammox reactor process for deep denitrification of late landfill leachate

A flow-type anaerobic sludge and anaerobic ammonium oxidation technology, applied in water/sludge/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve unfavorable process engineering applications and reaction condition control Strict and other issues, to achieve the effect of saving oxygen supply, reducing toxic effects, and reducing sludge generation

Active Publication Date: 2016-09-07
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology

However, most of the existing anaerobic ammonium oxidation studies use simulated sewage, and few studies use actual landfill leachate; at the same time, a single reactor is basically used, and the reaction conditions are strictly controlled, which is not conducive to the engineering of the process. application

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  • Upflow anaerobic sludge bed + anoxic/aerobic + anammox reactor process for deep denitrification of late landfill leachate

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[0044] Combined example: The experimental water was taken from a waste landfill in Beijing, and the water quality is as follows: COD=2000~3000mg·L -1 , NH 4 + -N=700~2000mg·L -1 , TP=9~15mg·L -1 , TN=1000~2300mg·L -1 , NO x - -N=0.5~15mg·L -1 , PH=7~8. Conventional water quality indicators such as COD, ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen all adopt national standard methods. TON, TN, TOC, IC, TC, etc. use TN / TOC analyzer (Multi N / C3000, Jena, Germany). The integrated water tank and the intermediate water tank are made of stainless steel, and the effective volume is 50L and 20L respectively. The effective volumes of UASB and ANAOR are 8.25L and 4.25L, respectively. The A / O reactor is made of plexiglass with an effective volume of 15L, divided into 10 compartments evenly. The first compartment is an anoxic zone, and the rest are an aerobic zone. The material of the secondary sedimentation tank is plexiglass, and its effective volume is 20L, and each cycle pr...

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Abstract

The invention relates to an advanced nitrogen removal method for treating late landfill leachate with an upflow anaerobic sludge blanket (UASB), anoxic / oxic (A / O) and anaerobic ammonia oxidation reactor (ANAOR) combined process, and belongs to the field of biological nitrogen removal. The following difficult problems exist in late landfill leachate treatment: due to high ammonia nitrogen content, total nitrogen in outlet water is unlikely to meet the standard; a carbon source often needs to be additionally added, so that the landfill leachate treatment cost is greatly increased. The late landfill leachate is treated with the UASB, A / O and ANAOR combined process, and a biological treatment technology is enhanced, so that the landfill leachate treatment cost is reduced to the maximum extent. Through short-cut nitrification-anaerobic ammonia oxidation coupling, without additionally adding the carbon source, the removal effect and efficiency of ammonia nitrogen and total nitrogen are improved and a problem that ammonia nitrogen and total nitrogen in the outlet water of the late leachate do not meet the standard is solved. The method can be widely applied to treatment of high-ammonia-nitrogen-content wastewater and is especially suitable for treating the late landfill leachate filled for more than 5 years in urban garbage landfill sites.

Description

Technical field [0001] The invention relates to a method for advanced denitrification of late-stage landfill leachate, belonging to the technical field of short-cut nitrification-anaerobic ammonia oxidation process urban domestic garbage leachate biological denitrification, and is suitable for advanced treatment of late-stage landfill leachate. Through short-cut nitrification and anaerobic ammonia oxidation, the advanced treatment of actual urban late-stage landfill leachate can achieve the deep removal of ammonia nitrogen and total nitrogen, thereby solving the problem of the late-stage landfill leachate biological treatment effluent not meeting the standard and high carbon source cost. Background technique [0002] Sanitary landfill is a common waste disposal method in developing countries, but after the sanitary landfill of waste, a large amount of leachate will be produced. Landfill leachate is a type of difficult-to-treat sewage with large changes in water quality and quanti...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 吴莉娜
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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