本文關(guān)鍵詞： 熱脫附尾氣 DDTs 分解產(chǎn)物 脈沖電暈放電 低溫等離子體　出處：《環(huán)境科學(xué)研究》2017年06期 　論文類型：期刊論文

【摘要】：為探索新型產(chǎn)業(yè)化應(yīng)用熱脫附尾氣處理技術(shù),采用脈沖電暈放電等離子體技術(shù)對(duì)含DDTs的熱脫附尾氣進(jìn)行處理,考察了工藝參數(shù)如脈沖電壓、脈沖頻率、ρ(DDTs)和停留時(shí)間對(duì)DDTs處理效果的影響,分析了DDTs經(jīng)低溫等離子體處理后的分解產(chǎn)物.結(jié)果表明,DDTs的去除率隨脈沖電壓的升高、脈沖頻率的增大和停留時(shí)間的延長(zhǎng)而增加,隨進(jìn)氣中ρ(DDTs)的升高而降低,但去除量隨進(jìn)氣中ρ(DDTs)的升高而增大.進(jìn)氣中的ρ(DDTs)為30.0 mg/m~3,停留時(shí)間為10 s,脈沖電壓為30.0 kV,脈沖頻率為50 Hz時(shí),DDTs的去除率為82.5%.低溫等離子體處理后,尾氣中的ρ(p,p'-DDT)、ρ(o,p'-DDT)和ρ(p,p'-DDD)降低,ρ(p,p'-DDE)反而升高,另有微量的二苯甲烷、二苯甲醇、4,4'-二氯二苯甲烷、2,4'-二氯苯甲酮和1,1-雙(對(duì)氯苯)-2-氯乙烯等分解產(chǎn)物被檢出.研究顯示,脈沖放電等離子體技術(shù)具有去除效率高等特點(diǎn),可有效去除含DDTs的熱脫附尾氣.
[Abstract]:In order to explore the new industrial application of thermal desorption tail gas treatment technology, the thermal desorption tail gas containing DDTs was treated by pulsed corona discharge plasma technology. The process parameters such as pulse voltage were investigated. The effects of pulse frequency, 蟻 DFT) and residence time on the effect of DDTs treatment were analyzed. The results showed that the removal rate of DDTs increased with the increase of pulse voltage, pulse frequency and residence time. The removal rate of DDTs decreased with the increase of 蟻 _ (?) in intake air, but increased with the increase of 蟻 _ (?) DDTs in inlet air. The 蟻 _ (10) mg / m ~ (3), residence time was 10 s, pulse voltage was 30.0 kV, pulse frequency was 50 Hz, and the removal rate of DDTs was 82.5 when the plasma was treated with low temperature plasma. In the tail gas, 蟻 ~ (+) ~ (p), p ~ ((+)), p ~ ((+)) and p ~ ((1)) _ (p ~ (+)) _ (P) _ (P _ (P)) _ (D _ (D))) decreased, whereas 蟻 _ (p) _ (P) _ (P) _ (P) _ (P) _ (P _ (P) P _ (P) _ (D _ (D))) increased. Pulse discharge plasma technology has the characteristics of high removal efficiency and can effectively remove thermal desorption tail gas containing DDTs.
【作者單位】： 中國(guó)環(huán)境科學(xué)研究院土壤污染與控制研究室;
【基金】：中國(guó)環(huán)境科學(xué)研究院中央級(jí)公益性科研院所基本科研業(yè)務(wù)專項(xiàng)(2015-YSKY-01)
【分類號(hào)】：X53;X701

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