中水污泥回用于脱硫系统现场中试工艺研究  

Pilot scale study on reclaimed water sludge reuse in desulfurization system

作　　者：吴中杰 侯亚琴 曹红梅[2] 李杰 王刚[3] 张传雪[3] 李辉 WU Zhong-jie;HOU Ya-qin;CAO Hong-mei;LI Jie;WANG Gang;ZHANG Chuan-xue;LI Hui(Electric Power Research Institute of State Grid Shandong Electric Power Company,Jinan 250000,China;Huaneng Shandong Power Generation Co.,Ltd.,Jinan 250000,China;Huaneng Jiaxiang Power Generation Co.,Ltd.,Jining 272400,China;School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250000 [2]华能山东发电有限公司,山东济南250000 [3]华能嘉祥发电有限公司,山东济宁272400 [4]山东建筑大学热能工程学院,山东济南250101

出　　处：《应用化工》2021年第12期3329-3332,共4页Applied Chemical Industry

基　　金：国家自然科学基金(21976132,51806126)。

摘　　要：以华能嘉祥电厂的现场中试装置为平台,首先利用高级氧化技术对中水污泥进行处理,降低污泥中有机物含量;然后与石灰浆液混合后通入脱硫吸收塔进行脱硫。考察了催化剂加入量对中水污泥有机物的脱除效果,分析了本工艺在中试装置内连续运行的稳定性,分析了经高级氧化工艺处理后的污泥对脱硫石膏的影响。结果表明,当停留时间为2 h,催化剂床层高度为100 cm,中水污泥的COD和TOC可分别由85.6,9.7 mg/kg下降至37.6,1.9 mg/kg。系统连续运行30 d,中水污泥的COD和TOC指标均维持在35~40 mg/kg和1.8~2.2 mg/kg,证明了本研究所制备的陶瓷催化剂效率高、稳定好,且脱硫系统产出的石膏除Cl^(-)满足二级石膏标准外,其余指标均满足一级石膏标准。This paper is aimed to solve the bubble problem in desulfurization system aroused by the sludge from reclaimed water.Firstly,the advanced oxidation technology was used to treat sludge in order to reduce the organics content,then lime slurry mixed with sludge was drip into desulfurizing tower.This study investigated the effect of catalyst amount on organic removal and analyzed the stability of continuous operation in the pilot plant.Furthermore,the quality of final gypsum was evaluated.Results indicated that COD and TOC of the sludge was reduced from 85.6 mg/kg to 9.7 mg/kg and from 37.6 mg/kg to 1.9 mg/kg,respectively with residence time of 2 h,catalyst bed height of 100 cm.Even after 30 d,COD and TOC of the sludge could be maintained at 35~40 mg/kg and 1.8~2.2 mg/kg indicating the prepared catalyst is efficient and stable.Also,the final gypsum met with the first grade gypsum except of the Cl^(-),which was qualified with the secondary grade.

关 键 词：中水污泥 脱硫 催化 高级氧化 中试实验 

分 类 号：TQ42[化学工程] X705[环境科学与工程—环境工程]