Study On The Degradation Of Organic Wastewater By Catalytic Oxone Oxidation Technologys

In recent years,advanced oxidation technology is a new water treatment process for treating organic pollutants in water.It has the advantages of strong oxidation capacity,convenient operation,and two times less pollution.Therefore,it has shown great potential and wide application prospects in the treatment of biodegradable or toxic and harmful organic wastewater.In recent years,the advanced oxidation technology based on sulfate radical(SO₄^·-)has received great attention due to its strong oxidation capacity,high reactivity and wide pH application.In this paper,the selection of widely used antibiotic levofloxacin as the research object,in-depth study about its Influence factors and reaction mechanism,non homogeneous Co?OH?₂/rGO/Oxone and Cu FeS₂/Oxone oxidation system treated simulated LVF wastewater.Taking a special printing and dyeing wastewater as the research object,US/Oxone/Co²⁺oxidation system was applied to treat certain special printing and dyeing biochemical effluent?SPDW?,and its influencing factors were optimized,which provided a theoretical basis for advanced oxidation technology to treat wastewater.The results of the study are as follows:?1?The Study on the preparation,catalytic performance and stability of Co?OH?₂/rGO catalyst:By adjusting the synthetic proportion of Co?OH?₂ and rGO,we studied the efficiency of Oxone degradation LVF by different proportions of Co?OH?₂/rGO composite materials,and determined the best catalyst synthesis ratio.The results of the study showed that the 20%Co?OH?₂/rGO composite proportion catalyst had the best effect.The Co?OH?₂/r GO/Oxone oxidation system was used to treat 25mg/L LVF wastewater.The best conditions are Oxone 0.9 mmol/L,Co?OH?₂/rGO as 0.1 g/L,pH is 7,and reaction time is 30 min.The 5 cycle use experiments of catalyst Co?OH?₂/rGO and determination of Co in the effluent of each cycle by ICP-MS,the results showed that after 5 cycles,Co?OH?₂/rGO still maintains high catalytic activity and Co overflow rate?1.04-0.69%?low.?2?The study on the preparation,catalytic performance and stability of CuFeS₂ catalyst:LVF simulated wastewater was treated by different oxidation systems,and the degradation rate showed that the CuFeS2/Oxone oxidation system could efficiently degrade LVF simulated wastewater.The CuFeS₂/Oxone oxidation system was used to treat 10mg/L LVF wastewater.The best conditions are Oxone 1.1 mmol/L,CuFeS₂ 1 g/L,pH 3,and reaction time 40 min.The 5 cycle experiments of CuFeS₂ and ICP-MS were used to determine the Cu and Fe of the effluent from each cycle and the comparison of XRD before and after the5 cycle.It was found that after 5 cycles,CuFeS₂ still maintained high catalytic activity,its stable structure,and the spillover rate of Cu and Fe was low.?3?The study on the treatment of SPDW by US/Oxone/Co²⁺oxidation system:The CODcr degradation rate of SPDW treated by different oxidation systems.It showed that US/Oxone/Co²⁺oxidation system had a high removal rate of SPDW?51.3%?,and it was found that UV has the function of auxiliary catalytic degradation of pollutants to Oxone/Co²⁺oxidation system.The best reaction parameter of US/Oxone/Co²⁺oxidation system for SPDW treatment is pH value 8,Oxone initial dosage 7 mmol/L,temperature control 20 ^oC,[Oxone]/[Co²⁺]ratio 100:1,reaction time 50 minutes and the US/Oxone/Co²⁺oxidation system of CODcr for 118.8 mg/L of SPDW removal rate reached 51.3%.