DTRO处理垃圾渗滤液的影响因素及优化  

Factors and Performance Optimization of Landfill Leachate Treated by DTRO

作　　者：龙滔[1] 孙毅 徐晓军[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650504 [2]云南方源科技有限公司,云南昆明650031

出　　处：《中国给水排水》2017年第15期71-74,共4页China Water & Wastewater

摘　　要：采用碟管式反渗透(DTRO)系统处理西南地区某生活垃圾填埋场渗滤液,在10个月的运行期间内,对膜系统运行压力、水温、渗滤液电导率、脱盐率等指标之间的相互影响进行机理分析并提出了优化方法。试验结果表明,系统运行期间各项污染物控制指标均达标。填埋场垃圾渗滤液电导率呈上升趋势,由16.14 m S/cm上升至31.63 m S/cm,一级DTRO运行压力由35.33×10~5Pa上升至53.70×10~5Pa。系统运行效率与温度有关,渗滤液温度低于14℃时,运行压力进入峰值区,压力最高值超出正常趋势约25%。在压力峰值区间,一级DTRO脱盐率达到最高值,为97.73%。低温天气时可利用填埋场废气热值以及太阳能、地热能加热渗滤液,以改善系统运行性能。The disk tube reverse osmosis （DTRO） system was applied to treat leachate from a landfill located in southwestern China. The interactions among indexes such as operating pressure, tem- perature, leachate conductivity and desalination rate were analyzed over 10 months, and an optimization method was recommended. Test results showed that the effluent indexes have met the national standards. The landfill leachate conductivity was on the rise, and the operating pressure of DTRO also rose from 35.33 ×10s Pa to 53.70 × 10s Pa. The system efficiency was directly related to the temperature. The op- erating pressure reached its peak when leachate temperature was below 14 ℃, and the maximum pressure exceeded its normal range by approximately 25%. The desalination rate reached a peak of 97.73% in the high-pressure range. The feasibility to improve operating efficiency in winter, by heating leachate u- sing landfill gas, solar energy or geothermal heat resources was also discussed.

关 键 词：渗滤液 碟管式反渗透 溶解性总固体 电导率 脱盐率 

分 类 号：X703[环境科学与工程—环境工程]