I 摘要 扎兰屯市污水处理厂污泥处理工艺可行性研究 近年来，我国城市化进程加快，工业迅猛发展，经济发生了翻天覆地的变化。 随着人口数量增长和居民生活水平提高，人均用水量、工业和生活污水排放量逐 年增加。为此国家大力建设城市污水处理设施，提高城镇污水处理效率，而污泥 处理处置问题也逐渐暴露出来。 扎兰屯市城市污水日平均处理量已达到 8.5x10 4 m 3 ，中水日平均处理量达到 2.0×10 4 m 3 ，共产生污泥约 50t/d（含水率 80%）。扎兰屯市未建设污泥处理厂， 大量污泥被堆放在厂区内，进行自然干化，给环境带来了极大的危害。因此，为 彻底解决污泥处理处置问题，决定建设污泥处理厂，对污泥进行深度处理，保障 城市的可持续发展。 通过整理工程资料，分析本项目实际情况，本文提出建设一座日处理能力 50t 的污泥处理厂，并将污泥处理厂厂址确定为扎兰屯市污水处理厂二期工程厂 内南部的预留地，占地约 3.71ha。本项目采用太阳能干化工艺，以太阳能集热装 置和污水源热泵作为热源，实现污泥含水率由 80%降至 30%的目标。经干化处 理后的污泥，送至扎兰屯市新城集中供热有限责任公司为辅助燃料，同大量煤粉 混合后，送至流化床锅炉进行焚烧。厂区设计分为生产区和存贮管理区两部分。 生产区包括湿污泥贮存间、太阳能干化温室、太阳能集热器等处理设施，还包括 变配电间、污水源热泵间、太阳能设备间、除臭间等辅助生产设施；存贮管理区 主要包括成品库、控制室、办公室等。 本次污泥处理工程建设不仅解决了城市污水处理所产生的污泥问题，而且带 来了良好的经济效益和环境效益，该工程建设具有良好的可行性。 关键词： 污水处理,污泥干化,太阳能Abstract I Abstract Feasibility Study on Sludge Treatment Process of Sewage Treatment Plant in Zhalantun City In recent years, the process of urbanization in China has accelerated. With the rapid development of industry, the economy has undergone earth-shaking changes. With the increase in the population and the improvement of the living standards of the residents, the per capita water consumption, industrial and domestic sewage discharges have increased year by year. For this reason, the country vigorously builds urban sewage treatment facilities to improve the efficiency of urban sewage treatment, as the same time, the problem of sludge treatment and disposal is gradually exposed. The average daily treatment capacity of urban sewage in Zhalantun City has reached 8.5×10 4 m 3 , the average daily treatment capacity has reached 2.0×10 4 m 3 , and the output of sludge is about 50 t/d（Sludge moisture content 80%）. Zhalantun City has not built a sludge treatment plant so a large amount of sludge has been dumped in the plant area to dry naturally, causing great harm to the environment. In order to solve the problem of sludge treatment and disposal completely, it was decided to build a sludge treatment plant and carry out advanced treatment of the sludge to ensure the sustainable development of the city. After analyzing engineering data and considering the actual situation of the project, this paper proposes to build a sludge treatment plant with a daily treatment capacity of 50 tons. The site of the sludge treatment plant was determined to be a reserved area in the south of the second phase of the sewage treatment plant in Zhalantun City, and the plant occupies about 3.71 hectares. In this project, the solar energy drying process is adopted. Solar heat collectors and sewage source heat pumps are used as heat sources, achieving the goal of reducing the moisture content of the sludge from 80% to 30%. The dried sludge is sent to Zhalantun Xincheng Central Heating Co., Ltd. as a kind of auxiliary fuel. After being mixed with a large amount ofAbstract II pulverized coal, the sludge is sent to a fluidized-bed boiler for incineration. The design of the plant area is divided into two parts: the production area and the storage management area. The production area includes processing facilities such as wet sludge storage rooms, solar energy drying greenhouses, and solar collectors, as well as auxiliary production facilities such as transformer substations, sewage source heat pumps, solar energy equipment rooms, and deodorization rooms. The storage management area mainly includes product warehouses, control rooms, offices, etc. The construction of the sludge treatment project not only solved the problem of sludge generated by urban sewage treatment, but also brought about good economic and environmental benefits. The project construction has good feasibility. Keywords: Sewage treatment, Sludge treatment, Solar energy目 录 I 目 录 第 1 章 绪 论 ........................................................................................1 1.1 研究背景 ..........................................................................................1 1.2 研究现状 ..........................................................................................2 1.2.1 污水处理设施现状 ....................................................................2 1.2.2 垃圾处理现状 ............................................................................3 1.2.3 现状存在的主要问题 ................................................................3 1.3 研究目的与意义 ..............................................................................4 1.4 研究内容 ..........................................................................................5 第 2 章 污泥处理工艺方案论证 ............................................................6 2.1 工程设计概况 ..................................................................................6 2.1.1 污泥处理概况 ............................................................................6 2.1.2 设计原则 ....................................................................................6 2.1.3 设计范围 ....................................................................................7 2.2 厂址选择 ..........................................................................................7 2.2.1 选址原则 ....................................................................................7 2.2.2 工程选址 ....................................................................................8 2.3 污泥处理处置技术 ..........................................................................8 2.3.1 污泥处理处置技术概述 ............................................................8 2.3.2 常见的污泥处理处置技术 ........................................................9 2.3.3 污泥处理处置技术的确定 ......................................................12目 录 II 2.4 污泥热干化技术的分析与比较 ....................................................12 2.4.1 污泥热干化技术概述 ..............................................................12 2.4.2 常见的污泥热干化技术 ..........................................................13 2.4.3 几种热干化工艺技术及经济比较 ..........................................15 2.5 污泥处理处置工艺方案的确定 ....................................................19 第 3 章 太阳能污泥干化处理工艺参数确定......................................20 3.1 太阳能污泥干化工艺流程 ............................................................20 3.1.1 工作原理 ..................................................................................20 3.1.2 工艺流程 ..................................................................................20 3.2 厂区总体布局设计 ........................................................................21 3.2.1 布置原则 ..................................................................................21 3.2.2 具体布置 ..................................................................................21 3.3 主体工艺设计 ................................................................................21 3.3.1 湿污泥贮存间 ..........................................................................22 3.3.2 污泥干化温棚 ..........................................................................22 第 4 章 污泥处理厂三效益分析 ..........................................................28 4.1 工程投资估算 ................................................................................28 4.2 三效益分析 ....................................................................................29 4.2.1 经济效益 .................