制药污泥处理技术研究现状与实验对比

Research status and comparison with experiments on technologies to treat pharmaceutical sludge

随着制药行业的发展,制药污泥的处理处置问题逐渐成为研究的热点。对污泥处理技术研究现状进行介绍,并以制药污泥为研究对象,分别使用臭氧氧化技术、好氧消化技术、PAM絮凝技术以及污泥制作活性炭技术开展小试研究,以污泥减量、资源化利用为评价指标,通过对各项技术工艺参数的优化及费用估算,筛选适合制药污泥处理的最优技术。研究发现,在各项技术最优条件下,PAM絮凝技术可将污泥含固率由6.32%提高至46.89%;臭氧氧化技术和好氧消化技术分别减少污泥挥发性固体质量(VS)50.55%和26.59%;制备的污泥活性炭饱和吸附量可达28.57 g COD/kg。结合经济预算结果,PAM絮凝技术在高效提高污泥含固率的同时,处理费用最低,是制药污泥处理工程应用经济可行的一种技术。

The treatment technologies on pharmaceutical sludge are the hotspots of current research with the development of the pharmaceutical industry. Laboratory experiments were conducted to study the treatment effects of several technologies on pharmaceutical sludge. Ozone oxidation, PAM flocculation, aerobic digestion and making sludge activated carbon were studied, and the treatment costs were estimated. Results showed that on the optimal conditions of each technology, the volatile solid of sludge were reduced by 50.55% , 26.59% by ozone oxidation and aerobic digestion, respectively. The solid content increased from 6.32% to 46.89% by PAM. The highest adsorption capacity concentration of the sludge-activated carbon was 28.57 g COD/kg. According to the results of treatment costs estimation, PAM flocculation is an economic feasible treatment technology for pharma- ceutical sludge engineering application, which needs the lowest cost to improve the solid content effectively.