针对氨氮含量为14 g/L、进料流量为100 m³/h、出水氨氮浓度<10 mg/L、回收浓氨水15%以上的体系进行了理论物料衡算,发现汽提精馏与MVR联用技术脱氨与直接蒸汽加热相比,吨废水处理的水蒸汽耗量降低了101.5 kg(不计首次开车时通入的蒸汽量),塔釜废水减量119.8 kg,回收15%浓氨水增量18.3 kg;并计算获得压缩机实际功率W₀=2.10×10⁶ W。理论验证了汽提精馏与MVR联用技术节能降耗的可行性。

Theoretical material balance calculation is carried out for the system with 14 g·L^-1 of ammoniacal nitrogen,100 m³·h^-1 of feed flow rate,less than 10 mg·L^-1 of ammoniacal nitrogen in effluent and a recovery of more than 15% concentrated ammonia water.It is found that the steam consumption needed for treating one ton of wastewater by stripping distillation combined with MVR technology is 101.5 kg (excluding the steam input during the first start-up) less than by direct steam heating technology,the wastewater in tower kettle drops by 119.8 kg,and the recovery of 15% concentrated ammonia water is increased by 18.3 kg.It is obtained from calculation that the actual power of the compressor W₀=2.10×10⁶ W.The feasibility to reach energy conservation and consumption reduction by stripping distillation combined with MVR is verified theoretically.

李雅(1990-),女,硕士,工程师,研究方向为工业水处理,yli@saikekanglun.com