Technology and device for treating percolate from small rubbish transfer station

Abstract

The invention relates to a technology and a device for treating a percolate from a small rubbish transfer station. The technology realizes combination of two-stage microelectrolysis physicochemical treatment and two-stage MBR biochemical treatment. The technology comprises the following steps of collecting a rubbish percolate by a collection tank, pumping the collected rubbish percolate into a first-stage iron-carbon micro-electrolysis reactor, pumping product water into a second-stage iron-carbon micro-electrolysis reactor, feeding product water obtained by physicochemical treatment orderly into an aeration reactor, a first-stage MBR reactor, an aeration settling pond and a second-stage MBR reactor, carrying out biochemical treatment, and pumping product water obtained by the biochemical treatment out of the device by a metering pump. The technology and the device have advantages of physicochemical and biochemical treatment and realize product water COD less than 1000mg/L in short treatment time. The device has a long service life, low investment and operation costs, and a small floor space, and is a novel rubbish percolate treatment device satisfying transfer station requirements.

Description

technical field [0001] The invention relates to a leachate treatment process and device of a small garbage transfer station, belonging to the technical field of water treatment. Background technique [0002] Landfill leachate is a kind of high-concentration, refractory organic wastewater, and its treatment is a major problem in the water treatment field at home and abroad. The leachate of the garbage transfer station belongs to one of them. It not only has the general characteristics of landfill leachate, but also has a relatively complicated treatment process. Moreover, its processing equipment has high requirements on space, that is, it is necessary to reduce the volume of waste processing equipment and facilities as much as possible, and protect the surrounding landscape environment. The traditional process generally adopts biochemical + membrane treatment or pure biochemical process route. Although the treatment effect of the above processes is acceptable, there are man...

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Problems solved by technology

The traditional process generally adopts biochemical + membrane treatment or pure biochemical process route. Although the treatment effect of the above processes is acceptable, there are many disadvantages: large floor area, high operating costs, high process operation requirements, traditional garbage The leachate treatment process cannot meet the above requirements

In particular, the characteristics of the landfill leachate in the transfer station determine that it is not suitable for a process route that takes up a lot of space and takes a long time to process.

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