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| 农林生物质直燃电厂底渣的水质净化应用：性质、效果、机理与展望 |
| Application of water quality purification using bottom ash from direct combustion of agroforestry biomass power plants：properties，effects，mechanisms and prospects |
| 投稿时间：2024-08-01 |
| DOI：10.13254/j.jare.2024.0608 |
| 中文关键词: 农林生物质 直燃电厂 底渣 水质净化 |
| 英文关键词: agroforestry biomass direct-fired power plant bottom ash water quality purification |
| 基金项目:上海市农业科技创新项目（沪农科T2023105） |
| 作者 | 单位 | E-mail | | 许可 | 水污染控制与资源绿色循环全国重点实验室, 同济大学环境科学与工程学院, 上海 200092 | | | 芮俊男 | 水污染控制与资源绿色循环全国重点实验室, 同济大学环境科学与工程学院, 上海 200092 | | | 赵逸霖 | 水污染控制与资源绿色循环全国重点实验室, 同济大学环境科学与工程学院, 上海 200092 | | | 张增胜 | 上海悠理环境科技有限公司, 上海 200433 | | | 董志强 | 水污染控制与资源绿色循环全国重点实验室, 同济大学环境科学与工程学院, 上海 200092
中铁上海工程局集团市政环保工程有限公司, 上海 200436 | | | 邱宇平 | 水污染控制与资源绿色循环全国重点实验室, 同济大学环境科学与工程学院, 上海 200092 | ypqiu@tongji.edu.cn |
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| 中文摘要: |
| 农林生物质直燃发电是指以农林剩余生物质为燃料的直接燃烧发电技术，可将“农废”转化为“绿电”。其中，炉排炉焚烧技术具有较低的综合营运成本而被广泛应用，但其缺点是底渣产量高、处置难。因此，实现底渣的有效资源利用，是推动行业可持续发展的关键。本文综述了不同种类农林生物质和不同燃烧方式带来的底渣理化性质变化，总结了底渣用于水质净化的效果与机制。在炉排炉不充分燃烧的条件下，底渣含碳量会显著提升，这导致渣体吸附能力增强，更具净水去污潜质。通过对底渣的合理筛分，可获得不同粒径的填料和滤料，材料的比表面积、孔隙体积、填充密度、挂膜特性，以及环境水力负荷、水体pH值均会影响底渣的去污能力。相比于其他传统水处理填料，底渣成本低廉、性质稳定、安全无本底污染。因此可大力发展底渣衍生的系列多功能材料，服务于农村河道水质改善，推动美丽乡村湿地建设，同时促进我国生物质直燃发电行业的绿色发展。 |
| 英文摘要: |
| The direct combustion power generation technology of agricultural and forestry biomass refers to the direct combustion power generation technology using agricultural and forestry residual biomass as fuel, which can transform“agricultural waste”into“green electricity”. Among them, grate furnace incineration is widely used due to its relatively low comprehensive operating costs, but the disadvantage is high production of bottom ash and difficulty in disposal. Thus, the effective resource utilization of bottom ash is crucial for advancing the sustainable development of the industry. This paper examines the variations in the physicochemical properties of bottom ash resulting from different types of agricultural and forestry biomass and combustion methods. It also outlines the effects and mechanisms of bottom ash from biomass direct combustion power plants in water quality purification. Under conditions of incomplete combustion in a grate furnace, the carbon content in the bottom ash can increase significantly, enhancing its adsorption capacity and its potential for water purification and pollution removal. Through proper sieving of the bottom ash, a range of particle sizes for filling and filtering materials can be achieved. Factors such as the specific surface area, pore volume, filling density, and membrane characteristics of the material, along with environmental hydraulic load and the pH value of the water body, all influence the bottom ash ′ s decontamination capabilities. Compared with other traditional water treatment materials, bottom ash is cost-effective, naturally stable, and safe without inherent pollutants. Therefore, it is feasible to develop a series of multifunctional materials derived from bottom ash to serve the improvement of water quality in rural rivers and promote the construction of beautiful rural wetlands, and at the same time, to foster the green development of China ′ s biomass direct combustion power generation industry. |
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