Photo-Fenton-positive permeation integrated device for treating organic wastewater difficult to biodegrade and using method of device

Abstract

The invention relates to a photo-Fenton-positive permeation integrated device for treating organic wastewater difficult to biodegrade and a using method of the device. The device comprises a photo-Fenton unit and an immersed positive permeation unit. The method for treating the water by using the device comprises the photo-Fenton process and the positive permeation process, and while organic pollutants are effectively degraded or converted by using the photo-Fenton unit, the organic pollutants which are not completely degraded or converted in the photo-Fenton process are permselectively intercepted by using a positive permeation membrane. The immersed positive permeation unit adopts an immersed positive permeation structure, a water inlet end circulating pump or an inlet water tank is notneeded, the overall structure is compact, the energy consumption is low, and the photo-Fenton-positive permeation integrated device is easily combined with other technologies or devices. Active substances generated by the photo-Fenton unit are used up in the pollutant degradation and converting process and in the positive permeation unit migration process, the strong oxidizing property of the photo-Fenton unit cannot affect the stability of the membrane, the wastewater treatment efficiency is high, the wastewater treatment effect is good, and the device is suitable for application and popularization.

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...

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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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