A method and device for preparing solid adsorbent by thermocatalysis of high-concentration nonylphenol polyoxyethylene ether wastewater

Abstract

The invention relates to a method and a device for preparing a solid adsorbentvia thermocatalysis of high-concentration nonylphenol polyoxyethylene ether wastewater. The method comprises the following steps: adding the high-concentration nonylphenol polyoxyethylene ether wastewater and water into a thermocatalysis reaction kettle, then adding catalysts, closing the reaction kettle, heating to 180-200 DEG C, and performing a stirring reaction for 3.0-4.0 h; and naturally cooling the reaction kettle, discharging a solid-liquid two-phase mixture in the reaction kettle, carrying out solid-liquid separation to obtain a solid substance, and drying the obtained solid substance, so as to obtain the solid adsorbent. The method is simple to operate; and compared with the anaerobic methanogenesis technology and the like, the method is not restricted to the properties of high-concentration organic liquid waste, has a wide range of application, is easy for engineering, and provides a harmless, recycling, economical and feasible technical means for the high-concentration nonylphenol polyoxyethylene ether wastewater which is hard to treat and dispose.

Description

technical field [0001] The invention belongs to the technical field of high-concentration refractory industrial wastewater or waste liquid treatment and resource utilization, and in particular relates to a method and a device for preparing a solid adsorbent by thermocatalysis of high-concentration nonylphenol polyoxyethylene ether wastewater. Background technique [0002] Nonylphenol ethoxylates are widely used in printing and dyeing, chemical and cleaning industries, and can be used as surfactants and cleaning agents. Nonylphenol ethoxylates are recognized as environmental hormones all over the world. Studies have shown that even low concentrations of this substance emitted can be extremely harmful. Once nonylphenol ethoxylates enter the environment, they will be rapidly decomposed into nonylphenol, a more toxic environmental hormone. Nonylphenol is persistent and bioaccumulative. It will exist in the environment for a long time, and can enter the food chain, affecting t...

AI Technical Summary

Problems solved by technology

For high-concentration nonylphenol polyoxyethylene ether wastewater with extremely high concentration, poor biodegradability and certain toxicity, it is difficult for anaerobic bacteria to grow and metabolize normally, and the effect of anaerobic methane production technology is limited, and it is impossible to obtain significant organic resources and total amount. The effect of emission reduction

Microbial fuel cell is a new technology that has been studied in recent years. Its principle is to convert the chemical energy contained in organic matter in wastewater or waste liquid into electrical energy to realize resource utilization. However, due to the limited efficiency of microbial electricity production, high current intensity cannot be obtained. It can only stay at the stage of theory and laboratory research, and it is not yet possible to realize engineering applications

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