本文選題：高鐵酸鉀 + 氧化處理��； 參考：《首都經(jīng)濟(jì)貿(mào)易大學(xué)》2017年碩士論文

【摘要】：丁基黃藥和乙硫氮是選礦廢水中殘留的兩種常用的選礦藥劑,生物毒性大。含丁基黃藥和乙硫氮等浮選藥劑的選礦廢水不經(jīng)處理直接排放進(jìn)入水體,會導(dǎo)致水質(zhì)惡化,散發(fā)惡臭,破壞礦區(qū)生態(tài)環(huán)境,威脅礦區(qū)職工及周邊居民的身體健康。因此,去除選礦廢水中的殘留浮選藥劑顯得尤為重要。本論文研究了用高鐵酸鉀處理含丁基黃藥模擬廢水、乙硫氮模擬廢水和實際選礦廢水的凈化效果,研究了反應(yīng)條件對兩種浮選藥劑去除率的影響,并對兩種藥劑的氧化產(chǎn)物進(jìn)行了初步鑒定。研究結(jié)果表明:1、反應(yīng)條件對高鐵酸鉀氧化丁基黃藥和乙硫氮去除率的影響。隨著高鐵酸鉀投加量的增大、pH值的降低、溫度升高和反應(yīng)時間的延長,丁基黃藥去除率逐漸升高。在室溫、起始pH值為8、高鐵酸鉀起始濃度為0.6g/L、乙硫氮初始濃度0.2g/L、丁基黃藥初始濃度0.2g/L和反應(yīng)1min的條件下,乙硫氮去除率達(dá)到56.75%,丁基黃藥去除率達(dá)到50.03%。高鐵酸鉀投加量為1g/L,反應(yīng)45min時,乙硫氮去除率達(dá)92.59%,黃藥去除率達(dá)98.57%。2、正交試驗結(jié)果表明:在高鐵酸鉀對乙硫氮的氧化過程中,pH值影響最強(qiáng),高鐵酸鉀濃度次之,時間最弱。在pH值為6,K2FeO4濃度為0.6g/L,反應(yīng)時間為45min時,對乙硫氮去除效果最好。在高鐵酸鉀對丁基黃藥的氧化過程中,高鐵酸鉀濃度影響最強(qiáng),pH值次之,時間最弱。在K2FeO4濃度為0.6g/L,反應(yīng)時間為45min,pH值為6時,對黃藥去除效果最好。3、用紫外波長掃描在200~450nm范圍內(nèi)分別對丁基黃藥乙硫氮降解情況進(jìn)行掃描,結(jié)果表明,在60min的氧化時間內(nèi),黃藥、乙硫氮被降解為其他形式的有機(jī)物,很好的達(dá)到了去除選礦藥劑的目的。利用GC/MC分別對對丁基黃藥和乙硫氮氧化過程的副產(chǎn)物進(jìn)行鑒定分析,證明乙硫氮氧化副產(chǎn)物為異硫氰酸乙酯。黃藥的氧化副產(chǎn)物為丁酸和丁醇。紅外光譜試驗結(jié)果顯示,乙硫氮原樣與降解后產(chǎn)物相比,反射光譜峰銳明顯減弱,其中的乙硫氮基被氧化為其他產(chǎn)物。將黃藥原樣與降解后產(chǎn)物的紅外光譜圖進(jìn)行對比,黃原酸鹽琉基的紅外吸收峰明顯減弱。這說明法能有效地將硫元素轉(zhuǎn)化為相應(yīng)的含氧酸根,降低了二次污染的程度,此法適用于氧化降解丁基黃藥和乙硫氮。4、用高鐵酸鉀處理實際硫化礦浮選廢水,廢水凈化效果良好。此法起到了很好的廢水凈化作用。當(dāng)廢水高鐵酸鉀濃度越高,廢水中重金屬離子和浮選藥劑的去除效果越好,高鐵酸鉀的添加對廢水pH值起到了調(diào)節(jié)作用,處理后廢水中重金屬含量達(dá)到《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》GB18918-2002排放標(biāo)準(zhǔn)要求。
[Abstract]:Ding Ji xanthate and ethanazide are two commonly used mineral beneficiation agents in the mineral processing wastewater, with great biological toxicity. The mineral processing wastewater containing Ding Ji xanthate and eththulfide and other flotation reagents will be discharged directly into the water body without treatment. It will lead to the deterioration of the water quality, emanate the odor, destroy the ecological environment in the mining area, and threaten the health of the workers and the residents in the mining area. Therefore, it is very important to remove the residual flotation reagents in the mineral processing wastewater. In this paper, the effects of treating wastewater containing butyl xanthate, simulated wastewater of ethyl thulfide and actual beneficiation wastewater were studied with potassium ferrate. The effects of reaction conditions on the removal rate of two kinds of flotation reagents were studied, and the oxidation products of two kinds of agents were first introduced. The results showed that: 1, the effect of reaction conditions on the removal rate of oxidation butyl xanthate and eththulfide in potassium ferrate. With the increase of the dosage of potassium ferrate, the decrease of pH value, the increase of temperature and the time of reaction increase, the removal rate of butyl xanthate gradually increases. At room temperature, the initial pH value is 8, and the initial concentration of potassium ferrate is 0.6g/L, eththulfide nitrogen. Under the initial concentration of 0.2g/L, the initial concentration of butyl xanthate 0.2g/L and reaction 1min, the removal rate of ethyl thiazonazide reached 56.75% and the removal rate of butyl xanthate reached 50.03%. potassium ferrate dosage 1g/L. When the reaction 45min, the removal rate of ethyl thiazonazo was 92.59%, and the removal rate of xanthate reached 98.57%.2. The orthogonal test results showed that the oxygen of ethyl thiazide was in the orthogonal test. During the process, the pH value has the strongest influence, the potassium ferrate concentration is the second, the time is the weakest. When the pH value is 6, the K2FeO4 concentration is 0.6g/L, the reaction time is 45min, the removal effect is best. In the oxidation process of the butyl xanthate, the effect of potassium ferrate concentration is the strongest, the pH value is the lowest and the time is the weakest. When the K2FeO4 concentration is 0.6g/L, the reaction is the reaction time. When 45min and pH value are 6, the best removal effect of xanthate is.3. The degradation of ethyl thiazide in butyl xanthate is scanned by UV wavelength scanning in 200~450nm range. The result shows that in the oxidation time of 60min, xanthate and thiazoxide are degraded into other forms of organic matter, and the purpose of removing mineral preparation agents is good. GC The by-products of the oxidation of butyl xanthate and ethnoxyl nitrogen were identified and analyzed by /MC. It was proved that the byproduct of ethnoxyl nitrogen oxidation was ethyl isothiocyanate. The oxidation by-products of xanthate were butyric acid and butanol. The base was oxidized to other products. The infrared absorption peak of xanthate was obviously weakened by comparing the infrared spectrum of the original xanthate with the degraded product. This shows that the method can effectively convert the sulfur element into the corresponding oxyacid root and reduce the degree of two pollution. This method is suitable for the oxidation and degradation of butyl xanthate and ethiazone.4. Potassium ferric acid is used to treat the actual sulfide flotation wastewater with good purification effect. This method has played a very good role in the purification of wastewater. When the concentration of potassium ferrate is higher, the better the removal effect of heavy metal ions and flotation reagents in the wastewater, the addition of potassium ferrate to the pH value of waste water is regulated, and the content of heavy metals in the wastewater after treatment is reached. < < Standard for discharge of pollutants from municipal sewage treatment plants >GB18918-2002 emission standard.
【學(xué)位授予單位】：首都經(jīng)濟(jì)貿(mào)易大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X751

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