Method for deep denitrification of metaphase landfill leachate through single-stage SBR (Styrene Butadiene Rubber) post denitrification treatment

A landfill leachate and post-denitrification technology, which is applied in the field of start-up and stabilization of landfill leachate biological denitrification treatment, can solve the problems of increasing operating costs and effluent discharge that cannot meet the standard discharge, so as to reduce operating costs and reduce aeration , The effect of simple reaction device

Active Publication Date: 2014-04-30
BEIJING UNIV OF TECH
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Problems solved by technology

The traditional denitrification process is often to mix the nitrification liquid with the influent water, and use the influent carbon source for denitrification. However, using this method to treat high-ammonia-nitrogen wastewater such as landfill leachate will make the effluent unable

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  • Method for deep denitrification of metaphase landfill leachate through single-stage SBR (Styrene Butadiene Rubber) post denitrification treatment
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  • Method for deep denitrification of metaphase landfill leachate through single-stage SBR (Styrene Butadiene Rubber) post denitrification treatment

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0019] Such as figure 1 Shown is a single-stage SBR post-denitrification device used for deep denitrification of landfill leachate in the middle stage, including: water tank 1, water inlet pump 2, water inlet pipe 3, sequencing batch reactor (SBR) 4, mechanical agitation Device 5, Dissolved Oxygen Meter 6, ORP Meter 7, PH Meter 8, Temperature Control System 9, Sampling Ports 10 and 12, Drain Valve 11, Sludge Valve 13, Gas Flow Meter 14, Air Compression Pump 15, Aeration Head 16, etc.; water tank 1, water inlet pump 2, water inlet pipe 3 are connected in sequence, and the bottom of SBR reactor 4 is equipped with aeration head 16, and agitator 5 is used for mechanical stirring. Meter 14 and air compressor pump 15 are connected, dissolved oxygen measuring instrument 6, ORP measuring instrume...

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Abstract

The invention discloses a method for deep denitrification of metaphase landfill leachate through single-stage SBR (Styrene Butadiene Rubber) post denitrification treatment, which belongs to the technical field of sewage treatment by using biochemical process. Aiming at the characteristics that the landfill leachate is high in organism concentration, high in ammonia concentration, high in C/P ratio (grater than 200), the invention discloses a real-time control method with the combination of 'anaerobic/aerobiotic/anoxic' operation modes, and SBR post denitrification is achieved. Under long-term domestication, glycan bacteria (GAO) can be enriched, volatile organic acids (VFA (Volatile Fatty Acid)) in water are converted into poly-beta-hydroxy-alkanoic acid ester (PHA) through glycogen glycolysis at an anaerobic stage by using GAO, in an aerobiotic stage (the dissolved oxygen is less than 0.8mg/L), when partial nitrification is carried out, most part of PHA is converted into glycogen, and in the anoxic stage, the residual PHA and the glycogen are utilized to perform carbon source denitrification, so that the effluent meets the latest national emission standard. The method has the advantages of simple devices, rapid starting, freedom of external carbon source, good denitrification effect, simplicity in operation, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of biochemical sewage biological treatment, in particular to a start-up and stabilization method for biological denitrification treatment of landfill leachate. Background technique [0002] my country is in the midst of rapid urbanization, which directly leads to a substantial increase in urban solid waste. Landfill is the most important way of urban waste disposal. It is also an effective and low-cost urban waste disposal method suitable for my country's national conditions. During the process of urban waste landfill, due to compaction and microbial decomposition, the pollutants contained in the waste will dissolve with water, and together with rainfall, runoff, etc., form landfill leachate. Landfill leachate is a kind of difficult-to-treat high-concentration organic wastewater, which contains a large amount of refractory organic matter, heavy metal ions, ammonia nitrogen and some other toxic substances. I...

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Application Information

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IPC IPC(8): C02F3/30
Inventor 王淑莹李忠明苗蕾彭永臻
Owner BEIJING UNIV OF TECH
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