高温分离水与树脂再生废水回供注汽锅炉技术研究

Gas Injection Boiler Recovery Technology Study for High-temperature Separated Water and Resin Regeneration Wastewater

为实现高温分离水与树脂再生废水回供注汽锅炉,减少清水资源浪费,开展了废水回用处理研究。室内试验表明,当两种废水以体积比4∶1混合时反应效果最佳,高温分离水中的Ca^(2+)、OH-与树脂再生废水中的Ca^(2+)、Mg^(2+)充分结合生成沉淀物CaCO_3和Mg(OH)_2。现场应用期间,新建的废水处理装置与沉淀调节剂MgSO_4配合使用,产品水中Ca^(2+)、Mg^(2+)质量浓度降低为0,水质无腐蚀性且无结垢趋势,可直接供给注汽锅炉使用。工程每年节约清水资源4 800 t,年可创效益19万元。

In order to realize the reuse of high-temperature separated water and resin regenerated wastewater for the gas injection boiler,and reduce the waste of clean water resource,the study of wastewater reuse treatment is carried out.Laboratory experiments show that when the two types of wastewater are mixed with a volume ratio of 4：1,the reaction works best.Ca^（2＋） and OH-in high-temperature separation water are combined with Ca^（2＋） and Mg^（2＋） in resin regenerated wastewater and then produce sediment of CaCO3 and Mg（OH）2.During the field application,the newly-built wastewater treatment facility is used along with the precipitation regulator MgSO4.By doing so,the mass concentration of Ca^（2＋） and Mg^（2＋） in the product water is reduced to 0,and the water quality is non-corrosive and no scaling trend,which could be directly supplied to the gas injection boiler.The project saves4800 tons of clean water resource and creates economic benefits of about 190 000 yuan per year.