Load type catalyst for treating organic wastewater and preparation method thereof

Abstract

The invention discloses a load type catalyst for treating organic wastewater through oxidation and a preparation method thereof. The load type catalyst is characterized by comprising the active component of Fe<2+> with the load capacity being 1-3%; and an epoxy resin-based porous polymer is used as a carrier and has the mean particle size being 2-5mm. The preparation method comprises the steps of: mixing polyethylene glycol, epoxy resin and diethylenetriamine by mass ratio to obtain a thick liquid; placing the thick liquid into an empty tubular column and sealing the tubular column; reacting in a thermostatic box to obtain white solids; cooling and then washing the white solid blocks with deionized water to remove the polyethylene glycol to obtain blocky materials of the epoxy resin-based porous polymer; cutting the blocky materials into catalyst carriers with the particle size being 2-5mm; drying and adding the catalyst carrier into a 0.1mol/L ferrous sulfate solution with the pH bing 1-5; carrying out thermostatic oscillation; and filtering, washing and drying solids to obtain the product. The load type catalyst has high catalytic activity, is easy to separate and can be used in a CWPO (Catalyst Wet Peroxide Oxidation) process to treat toxic and harmful organic wastewater difficult for biodegradation; in addition, a preparation process is simple and is low in cost, which is beneficial to the popularization and use of the catalyst.

Description

technical field [0001] The invention relates to a supported catalyst which can be used for catalytic wet peroxide oxidation treatment of organic waste water at normal pressure and a preparation method thereof. The catalyst can be used in catalytic wet oxidation process under normal pressure to treat poisonous and harmful substances when used in combination with hydrogen peroxide. 1. Refractory biodegradable organic wastewater belongs to the field of water treatment. Background technique [0002] With the continuous development of chemical, pharmaceutical and other industries, the pollution of toxic, harmful and refractory organic substances has become a major global environmental problem, and the traditional wastewater treatment methods are not ideal for the removal of such substances. Advanced oxidation technology is an effective technical means to deal with toxic, harmful, and biodegradable organic substances. Commonly used advanced oxidation technologies include photocata...

AI Technical Summary

Problems solved by technology

However, the supported catalysts that can be used in the heterogeneous CWPO process also have some shortcomings, mainly as follows: (1) The preparation process of the supported catalyst is complicated, the secondary pollution is large, and the cost is high, which limits the industrial application; (2) ) Supported catalysts are generally powdery, and solid-liquid separation is difficult, which increases the complexity of the process; (3) Catalysts prepared with inorganic materials such as molecular sieves as carriers generally have a pore size less than 10 nanometers and low mass transfer efficiency. The degradation effect of organic matter is poor