46results about How to "Improve the effect of oxidation degradation" patented technology

The invention discloses a treatment method for aniline wastewater. The treatment method comprises the following steps: firstly, adjusting the aniline wastewater to acid; heating to 40-100 DEG C and mixing with a formaldehyde solution, after condensation polymerization, adjusting the pH to 6-9, and filtering to obtain a supernate I; then, adjusting the pH value of the supernate I to 2-6, after Fenton reaction, adjusting the pH value to 7-10 for flocculation, and filtering to obtain a supernate II; and adding a NaClO solution into the supernate II, reacting at 30-50 DEG C for 0.1-2 hours and filtering. The invention provides the treatment method for the aniline wastewater. By combined use of a condensation polymerization-Fenton-NaClO oxidization technology, the COD and aniline content of the aniline wastewater are obviously reduced, the treatment effect is remarkable, no solid wastes are generated, and secondary pollution is not caused.

The invention discloses a method for electrocatalytically treating waste browning liquid. The method comprises the following steps: adding a metal ion catalyst with a variable valence state to the waste browning liquid and stirring evenly; Electrolysis is carried out under the overpotential cathode, and the copper ions in the electrolyte are monitored in real time. When the concentration of copper ions in the electrolyte is less than 1g / L, the electrolysis is stopped; the variable valence metal ion catalyst refers to high price and strong Oxidative power of variable valence metal ion catalysts. After the electrolysis, the recovery and reuse of the cationic catalyst is realized through extraction and stripping operations. The present invention uses variable valence state metal ion catalysts to electrolyze the waste browning liquid, which can effectively degrade the copper-containing organic complexes in the waste browning liquid, so that the copper-containing complexes in the waste liquid release free copper ions and deposit on the cathode, improving the efficiency of the browning process. The recovery rate of copper in the waste browning liquid can be improved, and the catalyst can be recovered and reused through extraction, which effectively reduces the cost.

The invention discloses an integrated fluidized catalytic oxidation tower and a method for deeply treating wastewater by using the same. A balance adjusting unit of the catalytic oxidation tower is connected with a water distribution pipe at the bottom of a catalytic oxidation unit through a pipeline; the outer side of the upper part of the catalytic oxidation unit is provided with a circulating water tank, the outer side of the circulating water tank is provided with an intermediate water tank, and the top of the circulating water tank is connected with the intermediate water tank through an overflow port; the intermediate water tank is connected with a water distribution pipe of a coagulation sedimentation unit through a pipeline, and a water collecting basin is connected with the balance adjusting unit through a pipeline; the balance adjusting unit is connected with the water collecting basin through a first overflow pipe, and the intermediate water tank is connected with the water collecting basin through a second overflow pipe; a water outlet of a water outlet tank is connected with a clean water basin through a water outlet pipe. By using the integrated fluidized catalytic oxidation tower, the mass transfer efficiency and the chemical reaction speed are effectively increased, the oxidative degradation effect for organic pollutants in wastewater is improved, the dosage of a Fenton reagent can be reduced, and the yield of chemical sludge in the later coagulation process can be reduced.