Wastewater Treatment Process Combining Ultrasonic and Fenton's Process

Abstract

Disclosed in the invention is a wastewater treatment process combining an ultrasonic wave and a Fenton method, comprising the following steps: pretreating original wastewater; inputting the wastewater into an ultrasonic system and carrying out preliminary degradation treatment; inputting effluent of the ultrasonic system into a Fenton reactor, adjusting the pH value, adding an oxidant and a catalyst to carry out oxidation reaction; returning effluent of the Fenton reactor to the ultrasonic system, circulating the wastewater in the ultrasonic system and the Fenton reactor and further carrying out oxidative degradation on organic matters; circulating for a certain period of time, inputting the effluent of the Fenton reactor into a flocculation sedimentation tank, adjusting the pH value, dosing, carrying out flocculation sedimentation and then conveying the effluent to a subsequent treatment system. The wastewater treatment process is good in treatment effect and has a good removal effect on refractory organic compounds, subsequent process treatment load is reduced, the dosage of a reagent is obviously reduced, and the wastewater treatment process is low in iron sludge yield and low in overall treatment cost.

Description

technical field [0001] The invention relates to a waste water treatment process combining ultrasonic wave and Fenton method. Background technique [0002] The traditional Fenton method is generally composed of a reactor, a flocculation sedimentation tank, and a dosing system. Sufficient oxidants are added, and the reaction time is two hours. The decomposition and carbonization removal rate of refractory organic matter is 40-65%. Industrial wastewater has a certain effect and can basically meet the process requirements, but there are still some urgent problems to be solved in operation and subsequent treatment, such as large equipment size (for example, one ton); high operating costs, and the degradation of high-concentration organic wastewater pollution components by 50-60% %, the cost of follow-up iron sludge treatment costs 30-35 yuan / ton; the reaction time is long, generally 50-120 minutes; the output of iron sludge is large, and the pH is adjusted by adding medicine. , ...

AI Technical Summary

Problems solved by technology

[0002] The traditional Fenton method is generally composed of a reactor, a flocculation sedimentation tank, and a dosing system. Sufficient oxidants are added, and the reaction time is two hours. The decomposition and carbonization removal rate of refractory organic matter is 40-65%. Industrial wastewater has a certain effect and can basically meet the process requirements, but there are still some urgent problems to be solved in operation and subsequent treatment, such as large equipment size (for example, one ton); high operating costs, and the degradation of high-concentration organic wastewater pollution components by 50-60% %, the cost of follow-up iron sludge treatment costs 30-35 yuan / ton; the reaction time is long, generally 50-120 minutes; the output of iron sludge is large, and the pH is adjusted by adding medicine. , so it is necessary to minimize the generation of iron sludge