| Butyl xanthate and diethyldithiocarbamate is commonly used in the remaining two kinds of mineral processing wastewater of mineral processing reagents,biological toxicity.Containing butyl xanthate and diethyldithiocarbamate flotation reagents such as mineral processing wastewater is not treated directly discharged into the water,can cause deterioration of water quality,fetid,destroy the mining area ecological environment,threatening health of the residents in the mining area professional workers and surrounding.Is studied in this paper using potassium ferrate treatment wastewater containing butyl xanthate simulation,diethyldithiocarbamate simulated wastewater and actual ore dressing wastewater purification effect,to study the influence of reaction conditions on the removal rate of two kinds of flotation reagents,on two kinds of agents and oxidation product has carried on the preliminary appraisal.The results show that:1.The effects of reaction conditions such as potassium dosage,reaction time,pH and temperature on the removal rate of butyl xanthate and diethyldithiocarbamate were investigated.With the increase of potassium ferrate dosage,the pH decreased,the temperature increased and the reaction time was prolonged,the removal rate of butyl xanthate gradually increased.At pH 8,room temperature,the initial concentration of potassium ferrate was 0.6g/L.The initial concentration of diethyldithiocarbamate 0.2g/L,the initial concentration of butyl xanthate 0.2g/L,and reaction 1min under the conditions of diethyldithiocarbamate removal rate of 56.75%,butyl xanthate removal rate of 50.03%.Potassium ferrate dosage was 1g/L,reaction 45 min,the removal rate of diethyldithiocarbamate was 92.59%,the removal rate of xanthate was 98.57%.2.The results of orthogonal test show that the pH has the strongest effect on the diethyldithiocarbamate in potassium ferrate oxidation process,and the concentration of potassium ferrate is the second,the time is the weakest,and the concentration of K2FeO4 is 0.6g/L,the reaction time is 45 min when the best effect on the removal of diethyldithiocarbamate.In the oxidation process of potassium ferrate oxidation xanthate,the concentration of potassium ferrate was the strongest,pH is the second,and the time was the weakest.The concentration of K2 Fe O4 was 0.6g/L,the reaction time was 45 min,the pH was 6 When the best effect on the removal of xanthate.3.By uv wavelength scanning in 200 ~ 450 nm range of butyl xanthate and diethyldithiocarbamate degradation condition,the results show that in the 60 min of oxidation time,xanthate,diethyldithiocarbamate degradation for other forms of organic matter,is good enough to reach the aim of removing the mineral processing reagents.Respectively using GC/MC for butyl xanthate and diethyldithiocarbamate oxide process appraisal analysis,prove diethyldithiocarbamate oxide byproduct of ethyl isorhodanate.That oxidation by-products of butyl xanthate is butyric acid and butyl alcohol.Infrared test results showed that diethyldithiocarbamate as compared with after degradation products,sharp reflection spectrum peak decreased significantly,the diethyldithiocarbamate oxidized for other products.After xanthate as-is and degradation product,comparing the infrared spectra of xanthate salt ryukyu groups of the infrared absorption peaks decreased significantly.This suggests that the method can effectively convert sulfur into the corresponding oxygen acid radical,reduce the secondary pollution degree,this method is suitable for oxidative degradation butyl xanthate and diethyldithiocarbamate.4.With potassium ferrate sulphide ore flotation wastewater treatment,waste water purification effect is good.When the higher the concentration of potassium ferrate,the better remove effects of flotation reagents and heavy metals in waste water.The addition of potassium ferrate is regulating role in the waste water pH.Heavy metal content in waste water after treatment in accordance with the urban sewage treatment plant pollutant discharge standard "GB18918-2002”. |
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