Integrated device for photo-Fenton-forward osmosis combined treatment of biodegradable organic wastewater and its application method

Abstract

The invention relates to an integrated device for photo-Fenton-forward osmosis combined treatment of biologically refractory organic wastewater and a method for using the device. The device includes a photo-Fenton unit and a submerged forward osmosis unit. The water treatment method using the device includes the photo-Fenton process and the forward osmosis process. While using the photo-Fenton treatment unit to effectively degrade or transform organic pollutants, the photo-Fenton process is used to degrade or transform non- Complete organic pollutants, the submerged forward osmosis unit adopts the submerged forward osmosis structure, without the need for water inlet circulation pump and water inlet tank, the overall structure is compact, low energy consumption, easy to combine with other processes or devices. The active substances produced by the photo-Fenton unit are exhausted during the degradation and transformation of pollutants and the migration to the forward osmosis unit. Its strong oxidative properties will not affect the stability of the membrane. The wastewater treatment rate is high and the effect is good, which is suitable for popularization and use.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and relates to waste water biodegradation advanced treatment technology, in particular to an integrated device for photo-Fenton-forward osmosis combined treatment of bio-refractory organic waste water and a method for using the same. Background technique [0002] With the rapid development of modern industry and related industries, the types of pollutants in industrial wastewater have increased year by year, resulting in complex components, high pollution loads, and high toxicity risks in industrial wastewater. The current industrial wastewater treatment process often uses a combination of aerobic-anaerobic microbial methods to remove organic pollutants to achieve the purpose of reducing COD. However, due to the potential toxicity and biodegradability of some refractory organic pollutants (BOD 5 / COD<0.4), microbial methods (including membrane bioreactor MBR) cannot effectively degrade and...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of single photo-Fenton, forward osmosis membrane process and device in the prior art to treat bio-refractory organic wastewater, taking into account the difficulty of bio-refractory organic wastewater treatment and its potential harm to the ecological environment, to provide a An integrated device for biodegradable organic wastewater and its use method, combined with photo-Fenton and forward osmosis technology, photo-Fenton technology can effectively reduce influent COD while producing purified water, improve the biodegradability of wastewater, supplemented by forward osmosis The selective permeability of the membrane further improves the quality of the effluent and effectively solves the problems of the existing biodegradable organic wastewater treatment efficiency, membrane concentration polarization and pollution.

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