| 蓝藻泥热压滤滤液与市政污泥协同处理工艺研究 |
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| 引用本文： | 张业帆,郑志永,曹启浩,朱富康,潘辉,李冲,杨汉文,刘和.蓝藻泥热压滤滤液与市政污泥协同处理工艺研究[J].环境工程,2023,41(2):24-29. |
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| 作者姓名： | 张业帆 郑志永 曹启浩 朱富康 潘辉 李冲 杨汉文 刘和 |
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| 作者单位： | 1. 江南大学 环境与土木工程学院 江苏省厌氧生物技术重点实验室, 江苏 无锡 214122; |
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| 基金项目： | 国家科技重大专项子课题"梅梁湾蓝藻水华控制与藻源性有机物处置技术集成与工程示范"(2017ZX07203001) |
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| 摘 要： | 为解决蓝藻泥处理成本高、资源化途径少的难题，在蓝藻泥热压滤深度脱水工艺的基础上，探索了热压滤滤液与市政污泥协同处理工艺。将蓝藻泥热压滤滤液协同回用于市政污泥深度脱水，考察了不同pH条件下热压滤滤液对市政污泥的脱水效果以及对市政污泥脱水后滤液中污染物含量的影响。结果表明：在蓝藻泥热压滤滤液中投加铁离子有利于市政污泥深度脱水；热压滤滤液回用于市政污泥脱水的最佳条件是在热压滤滤液中添加CaO调节pH至7.0,协同处理工艺添加的化学药剂量比常规深度脱水工艺减少68.1%,产生的滤液量比常规深度脱水工艺减少45%,并且总单位成本比常规深度脱水工艺减少16.6%,将促进蓝藻泥的经济处理，拓展其资源化途径。
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| 关 键 词： | 蓝藻泥 热压滤滤液 市政污泥 深度脱水 协同处理工艺 |
| 收稿时间： | 2021-12-21 |
A COLLABORATIVE TREATMENT PROCESS FOR MUNICIPAL SURPLUS SLUDGE AND THERMAL PRESS FILTRATE FROM CYANOBACTERIAL SLUDGE |
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| Affiliation: | 1. Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China;2. Wuxi Guolian Environmental Protection Technology Co., Ltd, Wuxi 214131, China;3. Jiangsu Collaborative Innovation Center of Water Treatment Technology & Material, Suzhou 215009, China |
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| Abstract: | To solve the problem of high treatment cost of cyanobacterial sludge and fewer recycling procedures, a collaborative process of the filtrate and municipal surplus sludge was explored based on deep dewatering by thermal press filtration. The thermal press filtrate from the cyanobacterial sludge was reused to dilute the municipal surplus sludge for its deep dewatering. The dewatering performance of the thermal press filtrate on the municipal surplus sludge at various pH conditions, and the resulting pollutants' concentrations in the municipal sludge filtrate were investigated. The result showed that the ferric ions in the filtrate of the cyanobacterial sludge by thermal press filtration were conducive to the deep dewatering of municipal surplus sludge. The optimal condition for the thermal press filtrate to be reused and diluted for municipal surplus sludge dewatering was to adjust the pH value to 7 with calcium oxide, and then mixed it with the municipal surplus sludge. In this way, the dosage of chemicals for the collaborative treatment process could be reduced by 68.1%. Compared with the conventional municipal sludge treatment process, the filtrate volume was reduced by 45% and the total unit cost was decreased by 16.6%. The collaborative treatment process would promote the economic treatment of cyanobacterial sludge and expand the recycling methods. |
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