Hydrolytic acidification-solar power supply-microalgae aeration-coupling reflux oxygen supply micro-aerobic sludge bed combined device and application thereof

Abstract

The invention discloses a hydrolytic acidification-solar power supply-microalgae aeration-coupling reflux oxygen supply micro-aerobic sludge bed combined device and application thereof. The device comprises a hydrolytic acidification treatment unit, a micro-aerobic treatment unit, an external circulation microalgae reoxygenation and precipitation integrated pool, a solar cell module and a light supplementing lamp, the hydrolytic acidification treatment unit comprises a hydrolytic acidification sludge bed, a microporous aeration device, a connecting pipe, a three-phase separator, a gas conveying pipe and a hydrolytic acidification excess sludge discharge pipe; the micro-aerobic treatment unit comprises a micro-aerobic sludge bed, a reoxygenation water return pipe and a return pump; a micro-aerobic sludge filler is arranged in the micro-aerobic sludge bed; the micro-aerobic sludge bed is connected with the external circulation microalgae reoxygenation and precipitation integrated pool through a water outlet pipe, and the external circulation microalgae reoxygenation and precipitation integrated pool can be connected with a plurality of micro-aerobic treatment units; and the light supplementing lamp is connected with the solar cell module through a storage battery and a charging controller. The device of the invention can be applied to wastewater treatment.

Description

technical field [0001] The invention relates to a hydrolytic acidification-solar power supply-microalgae aeration-coupling backflow oxygen supply micro-oxygen sludge bed combination device and its application in wastewater treatment, belonging to the technical field of sewage treatment. Background technique [0002] Most urban sewage treatment plants adopt the anaerobic and aerobic activated sludge method as the core sewage treatment method. This method has played a certain role in the degradation of organic matter in wastewater and the removal of nitrogen and phosphorus, but there are still many problems. For example: the carbon dioxide gas produced in the sewage treatment process intensifies the greenhouse effect; the nitrification and denitrification processes of denitrification are separated in time or space, which increases the hydraulic retention time and floor area; the power consumption of blast aeration accounts for the total of sewage treatment plants. 40%-50% of e...

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Problems solved by technology

[0003] At present, most of the carbon dioxide produced by anaerobic technology or hydrolytic acidification technology is directly discharged into the atmosphere to increase the greenhouse effect, and the way for microalgae to use carbon dioxide has been ignored; The method of oxygen production by microalgae through photosynthesis has also been neglected.

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