Method and system for treating garbage malodorous gas by humus soil aerobic fixed bed under multi-stage series stock household garbage sieve

Abstract

The invention belongs to the field of waste gas treatment. The invention discloses a method and system for treating garbage malodorous gas by a humus soil aerobic fixed bed under a multi-stage seriesstock household garbage sieve. The method comprises the following steps: (1) enabling gas to enter a fixed bed from a gas inlet unit at the bottom of the fixed bed, exhausting the gas from the top after being treated by the fixed bed by sucking the top of the fixed bed, and carrying out treatment by uniformly preparing a stock garbage aged leachate from the top of the fixed bed, and (2) connectingthe exhausted gas to a bottom gas inlet unit of a next-stage fixed bed, treating by utilizing the multi-stage series-connected fixed beds in a sequencing batch alternating manner, and discharging after reaching the standard. According to the method disclosed by the invention, the treatment of three pollutants, namely the humus soil under the sieve, the aged leachate and the malodorous gas in thefixed bed is mutually combined, so that not only can wastes be treated by wastes, but also the three-in-one balance control target of three-phase pollution of water, solid and gas can be realized.

Description

technical field [0001] The invention belongs to the field of waste gas treatment, and in particular relates to a method and a system for treating foul-smelling and peculiar-smelling gas of garbage in a multi-stage series series with a humus soil aerobic fixed bed under the sieve of domestic garbage. Background technique [0002] In the process of excavation, sorting and recycling of existing garbage, there are air pollution problems caused by odorous and odorous gases. The components mainly include sulfur-containing compounds (such as hydrogen sulfide, mercaptan, sulfide, etc.), nitrogen-containing compounds (such as ammonia, Amines, etc.), aromatic hydrocarbons, saturated and unsaturated hydrocarbons, oxygen-containing compounds and halogenated hydrocarbons, etc., have the pollution characteristics of "low concentration and large flow". [0003] Commonly used malodorous gas treatment methods mainly include physical methods, chemical methods, biological methods and deodorant...

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Problems solved by technology

[0007] Aiming at the problems of existing biofiltration deodorization technology, such as easy clogging of reactors, low removal rate of refractory substances in malodorous gas, and unbalanced bed pH, the present invention provides a method for removing humus soil under the sieve, aged The system and method of combining the three pollution treatments of leachate and odorous gas to remove odorous gas from garbage can not only "treat waste with waste", but also achieve the "trinity" balanced control goal of three-phase pollution of water, solid and gas

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