[1]方俊华,旷鹏,程思捷,等.污泥水热炭中磷及主要伴生金属元素的浸出行为[J].中国给水排水,2024,40(3):101-106.

　FANGJun-hua,KUANGPeng,CHENGSi-jie,et al.Leaching Behavior of Phosphorus and Main Associated Metal Elements from Sludge Hydrothermal Carbon[J].China Water & Wastewater,2024,40(3):101-106.点击复制

污泥水热炭中磷及主要伴生金属元素的浸出行为

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第3期 页码: 101-106 栏目: 出版日期: 2024-02-01

Title:Leaching Behavior of Phosphorus and Main Associated Metal Elements from Sludge Hydrothermal Carbon

作者:方俊华1， 旷鹏1， 程思捷1， 唐琦2（1.重庆大学 三峡库区生态环境教育部重点实验室，重庆 400045；2.成都市自来水有限责任公司，四川 成都 610031）

Author(s):FANG　Jun-hua1， KUANG　Peng1， CHENG　Si-jie1， TANG　Qi2（1. Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment ，Chongqing University， Chongqing 400045， China； 2. Chengdu Municipal Waterworks Co. Ltd.， Chengdu 610031， China）

关键词:污泥水热炭;  磷回收;  金属;  浸出

Keywords:sludge hydrothermal carbon;  phosphorus recovery;  metals;  leaching

摘要:以水热碳化对市政污泥进行预处理，采用硫酸法对制得的污泥水热炭进行磷提取实验，同时考虑钙、铁、铝的释放，探究硫酸浓度、浸出时间、液固比对磷提取效果的影响。结果表明，水热炭中磷的形态以Ca-P、Mg-P为主，该形态有利于磷的提取利用。磷及相关金属的浸出率随硫酸浓度的增大而升高。长时间浸出会导致溶液形成硫酸钙晶体，降低磷和钙的浸出率，铁和铝的浸出率随着浸出时间的增加而升高，但所需浸出时间较长。液固比通过影响水热炭与酸的接触面积来影响磷及相关金属的浸出效果。在硫酸浓度为0.5 mol/L、浸出时间为120 min及液固比为50 mL/g的条件下，水热炭中磷的浸出效果最好，浸出率为93.8%，钙、铁、铝的浸出率分别为70.4%、54.5%、65.8%。

Abstract:Municipal sludge was pretreated by hydrothermal carbonization method, and phosphorous was extracted from the sludge hydrothermal carbon by sulfuric acid method. Considering the release of calcium, iron and aluminum, the effects of sulfuric acid concentration, leaching time and liquid-solid ratio on the phosphorus extraction performance was investigated. The forms of phosphorus in hydrothermal carbon were mainly Ca-P and Mg-P, which were conducive to the extraction and utilization of phosphorus. The leaching rates of phosphorus and related metals showed an overall increasing trend with the increase of sulfuric acid concentration. Long leaching time led to the formation of calcium sulfate crystals in the solution, and reduced the leaching rates of phosphorus and calcium. The leaching rates of iron and aluminum increased with the increase of leaching time. However, the leaching time was longer. The liquid-solid ratio affected the leaching performance of phosphorus and related metals by influencing the contact area between hydrothermal carbon and acid. When the sulfuric acid concentration was 0.5 mol/L, leaching time was 120 min and liquid-solid ratio was 50 mL/g, the maximum leaching rate of phosphorus from hydrothermal carbon was 93.8%, and the leaching rates of calcium, iron and aluminum was 70.4%, 54.5% and 65.8%, respectively.

相似文献/References:

[1]郝晓地,郭小媛,时琛,等.污泥焚烧灰分磷回收Ash Dec工艺及其研究进展[J].中国给水排水,2022,38(14):17.

　HAOXiao-di,GUOXiao-yuan,SHIChen,et al.Advances in the Ash Dec Process for Phosphorus Recovery from Sludge Incineration Ash[J].China Water & Wastewater,2022,38(3):17.

[2]丁燕燕,于鸿宇,戴晓虎.污泥中的磷及回收技术研究进展[J].中国给水排水,2022,38(16):29.

　DINGYan-yan,YUHong-yu,DAIXiao-hu.Research Progress on Phosphorus in Sludge and Its Recovery Technology[J].China Water & Wastewater,2022,38(3):29.

[3]郝晓地,李季,吴远远,等.蓝色水工厂：框架与技术[J].中国给水排水,2023,39(4):1.

　HAOXiao-di,LIJi,WUYuan-yuan,et al.Blue Water Factories (BWFs): Framework and Technologies[J].China Water & Wastewater,2023,39(3):1.

[4]丁鑫,李祥,毕贞,等.厌氧/好氧交替生物膜工艺利用原水中碳源回收磷[J].中国给水排水,2023,39(5):1.

　DINGXin,LIXiang,BIZhen,et al.Recovery of Phosphorus by Anaerobic/Aerobic Alternative Biofilm Process Using Organic Carbon from Raw Wastewater[J].China Water & Wastewater,2023,39(3):1.

 

更新日期/Last Update: 2024-02-01

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