Technology for methanation processing consumer waste step by step and bioreactor

Abstract

The invention discloses a fractional methanation treatment technique of consumer waste, which comprises the following steps: equipping with two series anaerobic reactor; producing the acid by hydrolyzing organic material in the consumer waste in the first anaerobic reactor; regarding the product as the charging material of the second anaerobic reactor by straining liquid; converting into methane; recharging the discharging water in the burial ground. The invention also provides a bioreactor based on the treatment technique. The invention increases a methane-producing reactor for treating the straining liquid before returning the tank at the inlet and outlet circulation pipes in the sanitary burial ground in order to separate the organic substance from acid-producing phase and methane-producing phase and acquire the physical separation and the co-metabolic reaction of two floras, which accelerates high-speed stabilization process of the consumer waste, while the methane-producing reactor can remove a large portion carbon in the organic material, which produces a large scale of methane gas and has the good economic benefit.

Description

technical field [0001] The invention relates to a domestic waste landfill treatment technology, in particular to a bioreactor for step-by-step methanation treatment of domestic waste. Background technique [0002] There is an acid inhibition phenomenon in the bioreactor technology of domestic waste leachate direct circulation and refilling. At present, most of the methods at home and abroad are realized by adding alkali to neutralize or controlling the amount of leachate refilling. This not only increases the operating cost, but also the leachate The control of the amount of recharge is affected by the process of landfill waste stabilization. In the landfill system, due to the heterogeneity of the landfill waste, the inhomogeneity of the fermentation process, and the asynchronous development of a certain group of microorganisms due to some reasons, it may affect the stability of the landfill waste. process. Therefore, it is difficult to control the leachate reinjection amo...

AI Technical Summary

Problems solved by technology

[0002] There is an acid inhibition phenomenon in the bioreactor technology of domestic waste leachate direct circulation and refilling. At present, most of the methods at home and abroad are realized by adding alkali to neutralize or controlling the amount of leachate refilling. This not only increases the operating cost, but also the leachate The control of the amount of recharge is affected by the stabilization process of landfill waste

In the landfill system, due to the heterogeneity of the landfill waste, the inhomogeneity of the fermentation process, and the asynchronous development of a certain group of microorganisms due to some reasons, it may affect the stability of the landfill waste. process

Therefore, it is difficult to control the leachate recharge amount and recharge method in order to distinguish the stabilization stage of the landfill.

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