Method for adsorbing, recycling and disposing wastewater

Abstract

The invention discloses a method for adsorbing, recycling and disposing a wastewater, which is suitable for disposing water body polluted by difficultly degraded organics (nitro compounds, halogenated organics, etc.) and comprises the following steps of: (1) crushing block-shaped bamboo charcoal into powders (10-1000 meshes) and washing the powders by water to remove impurities; (2) soaking the pre-disposed bamboo charcoal powders with concentrated nitric acid (10-70%) or concentrated sodium hydroxide (10-40%) and washing the solution by water to neutral; (3) using the modified bamboo charcoal to adsorb the released wastewater meeting the standard and recycling the released water; and (4) oxidating the bamboo charcoal with saturated adsorption by Fenton reagent (the mixing aqueous solution of H2O2 and Fe, wherein the concentration of the H2O2 solution is 0.1-5%, the molar concentration ratio of H2O2 and Fe is 10:1-50:1 and the pH is 2-6) or ClO2 aqueous solution (0.5-5%), and recovering the adsorbing performance of the bamboo charcoal. The method has the advantages of low energy consumption, being friendly to environment, good disposal effect, convenient operation, etc.

Description

technical field [0001] The invention belongs to the technical field of waste water reuse treatment, and in particular relates to a treatment method based on bamboo carbon adsorption and chemical oxidation in-situ regeneration, which is suitable for the reuse treatment of industrial waste water and domestic sewage discharged up to the standard. technical background [0002] my country's water pollution problem is very prominent, and the current water resources are becoming increasingly tense. Water pollution has a great impact on the ecological security of aquatic organisms and crops, as well as human health. Industrial wastewater and domestic sewage are important contributors to water pollution. Wastewater discharged up to standard after secondary treatment still contains a certain concentration of micro-pollutants. It is very important to return to production or life. [0003] At present, the reuse treatment technologies for secondary biochemical effluent mainly include a...

AI Technical Summary

Problems solved by technology

However, in the in-situ regeneration treatment of activated carbon, the actual implementation of electromagnetic radiation is relatively difficult, and it is difficult to obtain ultrasonic and microwave generators with stable and high-power output

[0006] At present, the research on the adsorption of pollutants in water by bamboo carbon is very lagging behind, and the regeneration treatment of saturated adsorbed bamboo carbon has not been reported, which seriously hinders the application of bamboo carbon in water purification.

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