Surface reoxygenation biological pretreatment reactor and method

Abstract

The invention relates to a surface reoxygenation biological pretreatment reactor and a method, relates to the technical field of sewage treatment, and aims at solving the problem that the ideal sewagetreatment effect is difficult to reach through the existing plug-flow or up-flow processing method. A plurality of baffle components are arranged in a shell of the reactor in parallel at intervals, each baffle component comprises a guidance baffle and a deflection baffle, the guidance baffle and the deflection baffle are vertically arranged at an interval and are both corrugated plates; the top end of the guidance baffle is flush with the top end of the side wall of the reactor, the bottom end of the guidance baffle and the bottom of the reactor are arranged at an interval, the bottom end ofthe deflection baffle is connected to the bottom of the reactor, the top end of the deflection baffle is lower than that of the guidance baffle, and a guidance chamber and an anaerobic hydrolysis reaction chamber are formed through the guidance baffle and the deflection baffle, are communicated, and are both communicated with the atmosphere. The method comprises the steps that an elastic three-dimensional filler is arranged in the reactor, the sewage sequentially goes by the guidance chamber and the anaerobic hydrolysis reaction chamber formed by the baffle components, so that the sewage and the elastic three-dimensional filler are fully stirred and are contacted and reacted, and the purified water is discharged out of the reactor through a water outlet.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biological pretreatment reactor and method for surface micro-reoxygenation. Background technique [0002] In recent years, with the development of chemical fiber fabrics and dyeing technology, more and more organic substances that are difficult to biodegrade, such as PVA size, rayon alkali hydrolyzate (phthalic acid, etc.), new dye auxiliaries, etc., have entered the printing and dyeing industry in large quantities. In wastewater, the biodegradability of printing and dyeing wastewater is further reduced, resulting in a decline in the COD removal rate of the original biological treatment system. [0003] Anaerobic hydrolysis acidification is a commonly used treatment technology for refractory organic wastewater. Common anaerobic hydrolysis reactors mainly include ordinary plug-flow type and up-flow type. Ordinary plug-flow anaerobic reactors have less water flow distur...

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Problems solved by technology

[0004] In view of the complex composition of printing and dyeing wastewater, the difficulty of its treatment increases, and the existing push-flow or up-flow treatment methods are difficult to achieve the ideal sewage treatment effect.

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