污泥深度脱水协同垃圾焚烧生产性试验研究  

Sludge Deep Dewatering and Co-incineration with Municipal Solid Waste

作　　者：叶方清 YE Fang-qing(Shanghai Honess Environmental Tech Corp.,Shanghai 200433,Chin)

机构地区：[1]上海泓济环保科技股份有限公司,上海200433

出　　处：《中国给水排水》2018年第15期110-115,共6页China Water & Wastewater

摘　　要：针对北方某城市200 t/d污泥集中处置项目进行模拟工业化生产的试验研究,以探索污泥深度脱水协同生活垃圾焚烧相关工艺条件及其稳定性。考察了不同工况下污泥脱水速率、泥饼含水率、低位热值以及冬季严寒环境下脱水泥饼的物理性能。结果表明,使用厢式隔膜压滤机,采用聚合氯化铝(PAC)和石灰作为调理剂,通过调整药剂投加比例,在PAC投加量为污泥干基的5%~7%、石灰投加量为污泥干基的10%~20%的情况下,经厢式隔膜压滤机深度脱水后,泥饼含水率可以达到44. 0%~58. 5%,低位热值为3. 25~4. 22 MJ/kg,脱水周期为2. 6~4 h,化学调理药剂成本为37~57元/t(含水率约为80%),泥饼低位热值可以满足垃圾焚烧炉入炉要求;泥饼在有条件储存或晾晒时可显著降低含水率,提高低位热值。To explore the associated process conditions and stability of the sludge dewatering and co-incineration with municipal solid waste, an experimental study was conducted to simulate the industrial production of 200 t/d sludge treatment project in a city in northern China. The sludge dewatering rate, the moisture content of the sludge cake, the low calorific value and the physical properties of the sludge cake in cold environment were all investigated under different conditions. The diaphragm chamber filter press was used for dewatering, and the polyaluminum chloride （PAC） and lime were used as condition- ers. The results showed that when the PAC dosage was 5% -7% and the lime dosage was 10% -20% （ dry solid of sludge）, the moisture content of sludge cake reached 44.0% - 58.5% , and the low calorific value reached 3.25 -4.22 MJ/kg. The production cycle was about 2.6 to 4 h, and the drug cost was 37 to 57 yuan/t （ moisture content was about 80% ）. The low calorific value had met the require- ments of municipal solid waste incinerator. The moisture content of sludge cake could be reduced significanfly after a period

关 键 词：污泥深度脱水 化学调理 污泥热值 协同焚烧 生活垃圾 

分 类 号：TU992.3[建筑科学—市政工程]