System and method for conducting deep denitrification processing on medium-term landfill leachate

Abstract

The invention provides a system and a method for conducting deep denitrification processing on medium-term landfill leachate. A dissolved oxygen (DO) sensor and an oxidation reduction potential (ORP) sensor are respectively connected with a DO tester and an ORP tester, the DO tester, the ORP tester and an aeration mechanism are all connected with a transducer, the ORP tester, the DO tester and the transducer are all connected with a process controller through a computer, and the process controller is respectively connected with a stirring mechanism, a water inlet mechanism, a water outlet mechanism and the aeration mechanism. The steps of applying the processing method of the system are sequentially injecting waste water in a sequencing batch reactor (SBR) and starting the system, enabling the aeration mechanism and the stirring mechanism to conduct nitration, starting the stirring mechanism to conduct denitrification, sediment, dewatering and leaving unused, and enabling the computerto judge the set value of cycle times. The system and the method can solve processing problems of the medium-term landfill leachate, improve use ratio of an organic carbon source in raw water in a processing process, and achieve deep denitrification with low processing cost.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to a system and method for deep denitrification treatment of mid-term landfill leachate. Background technique [0002] Once the municipal solid waste leachate enters the natural water body, it will cause serious and irreparable damage to the water environment of our country. How to treat the municipal solid waste leachate economically and efficiently has become an important issue related to the safety of my country's water environment. In particular, the denitrification of landfill leachate has always been the end point and difficulty of research at home and abroad. Biological denitrification technology is currently widely used in the denitrification of landfill leachate because of its recyclable utilization and low treatment cost, which is the real removal rather than pollution "transfer". In the nitrification process of biological denitrification, the power co...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of the above-mentioned technologies, the present invention provides a method that can solve the problem of mid-term landfill leachate treatment, improve the utilization rate of organic carbon sources in raw water during the treatment process, and achieve deep denitrification at a lower treatment cost. System and method for deep denitrification treatment of mid-term landfill leachate

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