本文選題：堆肥 + TNT紅水��； 參考：《環(huán)境科學(xué)研究》2017年11期

【摘要】：DNTS[二硝基甲苯磺酸鹽,主要包括2,4-DNT-3-SO3-(2,4-二硝基甲苯-3-磺酸鹽)和2,4-DNT-5-SO3-(2,4-二硝基甲苯-5-磺酸鹽]是TNT(2,4,6-三硝基甲苯)紅水污染土壤中主要污染物質(zhì),為研究堆肥化對(duì)土壤中DNTS的降解效果,采用有機(jī)廢物堆肥方法,探討堆肥化對(duì)TNT紅水污染土壤中DNTS降解的可行性,以及溫度、含水率和pH變化對(duì)降解效果的影響.結(jié)果表明,有機(jī)廢物堆肥能處理TNT紅水污染土壤,在堆肥60 d內(nèi),5個(gè)堆肥體系(豬糞+木屑、豬糞+麥殼、污泥+木屑、污泥+麥殼和馬糞+木屑)對(duì)2,4-DNT-3-SO3-的降解率為65.5%~88.4%,對(duì)2,4-DNT-5-SO3-的降解率為60.9%~100%.在第4天各堆肥體系的高溫階段(29.7~53.6℃),5個(gè)堆肥化體系中2,4-DNT-3-SO3-總量的49.5%~67.3%被降解,說(shuō)明各堆體的中溫-高溫階段對(duì)有機(jī)物的降解起重要作用.堆體含水率隨堆肥時(shí)間的延長(zhǎng)呈下降趨勢(shì),在堆肥第8天,外源補(bǔ)水至體系含水率為50%,豬糞+麥殼體系對(duì)2,4-DNT-3-SO3-的降解率從70.2%增至88.4%,說(shuō)明適當(dāng)?shù)耐庠囱a(bǔ)水可提高2,4-DNT-3-SO3-的降解率.5個(gè)堆肥體系中pH均呈初期上升、后期下降并趨于穩(wěn)定的趨勢(shì),但在整個(gè)堆肥過(guò)程中,堆體pH始終保持在7.3~8.3之間.研究顯示,5個(gè)堆肥體系中豬糞+麥殼體系對(duì)DNTS的降解率最高,分別為88.4%和100%.
[Abstract]:DNTS [dinitrotoluene sulfonate, mainly composed of 2o 4-DNT-3-SO3-O2-DNT-4-dinitrotoluene-3-sulfonate] and 24-DNT-5-SO3-H2NT-5-DNT-4-dinitrotoluene-5-sulfonate are the main pollutants in the red water polluted soil, in order to study the effect of composting on the degradation of DNTS in the soil, the main pollutants in the red water pollution soil are the dinitrotoluene sulfonate (dinitrotoluene sulfonate) and the dinitrotoluene sulfonate (2NT-5-dinitrotoluene sulfonate). The feasibility of composting the degradation of DNTS in TNT red water polluted soil by composting and the effects of temperature, water content and pH on the degradation were discussed. The results showed that organic waste compost could treat TNT red water polluted soil. Within 60 days of composting, 5 composting systems (pig manure sawdust, pig manure wheat husk, sludge sawdust) were used. The degradation rate of 24-DNT-3-SO3- by sludge wheat husk and horse dung sawdust was 65.5and 88.4, and the degradation rate of 2nT-5-SO3- was 60.9% and 100% respectively. On the 4th day, 67.3% of the total amount of 24-DNT-3-SO3- in 5 composting systems was degraded in the high temperature stage of 29.7 鈩，

本文編號(hào)：1870588