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针对我国村镇供水工程对消毒技术的需求,采用消毒效果可靠、设备管理简单的次氯酸钙消毒。次氯酸钙消毒由次氯酸钙复配饼剂以及自动化加药器构成。针对次氯酸钙消毒进行了实验室模拟水厂试验,试验结果表明在管道流量为9m3/h时,投加药量为0.3～0.5L/h即可达到国家饮用水卫生标准对出厂水消毒剂余氯要求的限值0.3mg/L,且有效氯浓度稳定、衰减慢。在模拟水厂试验的基础上,将次氯酸钙消毒设施投入水厂实际应用,以廊坊广阳区万庄南水厂为例,探讨次氯酸钙消毒设施的实际运行效果以及最佳运行工况。实际应用表明次氯酸钙消毒效果可靠,设备简单方便,无需设备维护,运行费用低,吨水处理成本约0.012 5元。因此,次氯酸钙饼状消毒剂配备专用自动化加药器在村镇供水工程中具有较大的推广价值。
Aiming at the demand of disinfection technology for water supply project in villages and towns in our country, disinfection with hypochlorite is adopted with reliable disinfection effect and simple equipment management. Calcium hypochlorite disinfection consists of calcium hypochlorite cake and automatic dosing device composition. Aiming at the disinfection of hypochlorite, a laboratory simulated water plant test was carried out. The test results showed that when the pipeline flow rate is 9m3 / h, dosage of 0.3 ~ 0.5L / h can reach the national standard for drinking water disinfection of factory water Residual chlorine requirements limit 0.3mg / L, and the effective chlorine concentration stability, slow decay. On the basis of simulating the experiment of water plant, put the calcium hypochlorite disinfection facilities into practical application in waterworks, taking Wanzhuangnan Waterworks in Guangyang District of Langfang as an example to discuss the actual operation effect and the best operation of calcium hypochlorite disinfection facilities Condition. Practical application of calcium hypochlorite disinfection shows reliable, simple and convenient equipment, without equipment maintenance, low operating costs, tons of water treatment costs about 0.012 5 yuan. Therefore, calcium hypochlorite cake disinfectant equipped with special automatic dosing device in the town water supply project has a greater promotional value.