本文選題：堆肥　切入點(diǎn)：重金屬　出處：《礦物學(xué)報(bào)》2017年Z1期 　論文類型：期刊論文

【摘要】：污泥中重金屬污染是影響污泥資源化利用的重要因素,而重金屬的遷移性直接決定了堆肥產(chǎn)品的生物安全性。為研究蒙脫石對(duì)堆肥過(guò)程中重金屬鈍化效果及腐熟度的影響,實(shí)驗(yàn)以菌菇渣和豬糞為調(diào)理劑,蒙脫石為鈍化劑,進(jìn)行脫水污泥高溫好氧堆肥。結(jié)果表明,不含鈍化劑的堆肥過(guò)程中,Cu和Pb的可交換態(tài)含量增加,遷移性增強(qiáng);而添加蒙脫石的堆肥化能有效抑制重金屬的活化,當(dāng)鈍化劑的添加量為7.5%時(shí)鈍化效果最好,對(duì)Cu、Pb和Zn的鈍化效果分別為30.6%、38.3%和19.6%。同時(shí),添加蒙脫石可使堆體的高溫期(50℃)維持6 d,最高溫度達(dá)65℃,種子發(fā)芽指數(shù)達(dá)90%以上,堆體完全腐熟,達(dá)到堆肥無(wú)害化標(biāo)準(zhǔn)。
[Abstract]:The pollution of heavy metals in sludge is an important factor affecting the utilization of sludge resources, and the migration of heavy metals directly determines the biological safety of compost products. In order to study the effects of montmorillonite on the passivation effect and maturity of heavy metals in composting process, Using mushroom residue and pig dung as conditioning agent and montmorillonite as passivating agent, high temperature aerobic composting of dewatered sludge was carried out. The results showed that the exchangeable content of Cu and Pb in the compost without passivating agent was increased and the mobility was enhanced. However, the composting of montmorillonite can effectively inhibit the activation of heavy metals. When the amount of passivating agent is 7.5, the passivation effect is the best, and the passivation effect for Cu _ (2 +) Pb and Zn is 38.3% and 19.6%, respectively. The addition of montmorillonite can keep the heaps at 50 鈩，

本文編號(hào)：1646654