A combination device of hydrolytic acidification-solar power supply-microalgae aeration-coupled backflow oxygen supply and micro-aerobic sludge bed and its application

Abstract

The invention discloses a hydrolytic acidification-solar power supply-microalgae aeration-coupling backflow oxygen supply micro-oxygen sludge bed combination device and its application. The device includes a hydrolysis acidification treatment unit, a micro-oxygen treatment unit, an external circulation microalgae reoxygenation sedimentation integrated tank, a solar cell module and a supplementary light; the hydrolysis acidification treatment unit includes a hydrolysis acidification sludge bed, a microporous aeration device, and a connecting pipe , three-phase separator, gas delivery pipe, hydrolysis and acidification residual sludge discharge pipe; micro-oxygen treatment unit includes micro-oxygen sludge bed, re-oxygenated water return pipe and return pump; micro-oxygen sludge bed is equipped with micro-oxygen sludge filler; the micro-oxygen sludge bed is connected to the external circulation microalgae reoxygenation sedimentation pool through the outlet pipe, and the external circulation microalgae reoxygenation sedimentation pool can be connected to multiple micro-oxygen treatment units; the supplementary light passes through The accumulator and the charge controller are connected with the solar cell assembly; the device can be applied to waste water treatment.

Description

technical field [0001] The invention relates to a hydrolysis acidification-solar power supply-microalgae aeration-coupling return oxygen supply microaerobic sludge bed combined device and its application in wastewater treatment, belonging to the technical field of sewage treatment. Background technique [0002] Most of the urban sewage treatment plants use 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, denitrification and phosphorus removal, but there are still many problems. For example, the carbon dioxide gas generated in the sewage treatment process aggravates the greenhouse effect; the nitrification and denitrification processes of denitrification are separated in time or space, which increases the hydraulic retention time and area; 40%-50% of the energy consumption, the reaction energy consumption is high; the mineralization of organic matter...

AI Technical Summary

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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