天津建设科技2025，Vol.35Issue(5)：74-76,3.DOI:10.3969/j.issn.1008-3197.2025.05.017
厌氧消化污泥重金属铬形态分布及稳定剂对其稳定效果研究
Study on the Morphological Distribution of Heavy Metal Chromium in Anaerobic Digestion of Sludge and the Stabilization Effect of Stabilizers on Sludge Stability
曹勇1
作者信息
- 1. 天津创业环保集团股份有限公司,天津 300381
- 折叠
摘要
Abstract
In response to the problem of heavy metal chromium(Cr)pollution in urban sludge restricting its resource uti-lization,this study takes anaerobic digestion sludge as the object and explores the stabilizing effect of hydroxy-apatite(HAP)on Cr.By adding HAP with sludge dry weight of 2%,5%,and 10%,the distribution of Cr forms and leaching rate were analyzed using BCR continuous extraction method and HJ/T 299-2007 Soild waste-Extration proceduce for leaching toxicity-Sulp-uric acid&nitric acid method leaching toxicity test.The results showed that anaerobic digestion process can achieve a stable Cr content of 80%in sludge;After the ad-dition of HAP,the stability rate of Cr leaching approached 100%,the proportion of stable state increased to over 90%,and the proportion of residual state was positively correlated with the dosage(R=0.914).The com-prehensive effect shows that 2%HAP can achieve high efficiency and stability.关键词
污泥处理/铬/厌氧消化/羟基磷灰石稳定剂Key words
sludge treatment/chromium/anaerobic digestion/hydroxyapatite stabilizers分类
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曹勇..厌氧消化污泥重金属铬形态分布及稳定剂对其稳定效果研究[J].天津建设科技,2025,35(5):74-76,3.
