青草沙水源水厂深度处理臭氧投加量及发生器配置分析

Analysis of Ozone Dosage and Generator Configuration for Advanced Treatment of WTP of Qingcaosha Raw Water

文中对采用青草沙水源的3座深度处理水厂调研后发现,臭氧实际总投加量在0.8~1.6 mg/L,常规运行总投加量一般在1.0~1.2 mg/L,现状臭氧发生器设置过大,闲置较为严重。在调研基础上,结合相关研究成果和规范要求,推荐青草沙水源的臭氧最大总投加量为1.7 mg/L,预臭氧投加量为0.5~1.0 mg/L,后臭氧投加量为0.5~1.0 mg/L。对不同规格臭氧发生器的特性进行了调研,发现实际运行功率随着工作负荷的降低而相应降低,负荷率在50%以上时,发生器效率和负荷率成反比,即负荷功率越高,产出臭氧效率越低,臭氧单位电耗越高。根据以上成果,对X水厂深度处理改造项目的臭氧发生器配置方案进行了详细分析。

In this paper,after investigating 3 advanced WTPs that used Qingcaosha Reservoir as raw water source,it was found that the actual total dosage of ozone was 0.8~1.6 mg/L,and the total dosage of normal operation was generally 1.0~1.2 mg/L,and the current ozone generator provided was excessive,resulting in serious expensive.Based on the investigation,and combining with relevant research outputs and standard specifications,it was recommended that the maximum total dosage of ozone for Qingcaosha Reservoir water source was 1.7 mg/L,wherein,the pre-ozone dosage was 0.5~1.0 mg/L,and the post-ozone dosage was 0.5~1.0 mg/L.The investigations to the characteristics of ozone generators with varied specifications were conducted,it was found that the actual operating power decreased as the workload decreased.When the load was above 50%,the generator efficiency was inversely proportional to the load rate,that was,the higher the load power,the lower the ozone output efficiency,and the higher the ozone unit power consumption.Based on the above results,a detailed analysis of the ozone generator configuration plan of the X WTP advanced treatment and renovation project was hereby carried out.