膜科学与技术

反渗透膜阻垢剂投加量优化及其阻垢性能评价

作者：李利华，崔勇，蒋玉明，周义，刘子发，韦少松，王辉，裴超迎，郝雪

单位： 1.北京亦庄水务有限公司，北京 100176；2.北京翰祺环境技术有限公司，北京 100085；3.北京能泰高科环保技术有限公司，北京 101601；4.北京国环清华环境工程设计研究有限公司，北京 100084；5.陶氏化学（中国）投资有限公司北京分公司，北京 100006

关键词：阻垢剂；反渗透；结垢；工业试验评定

出版年,卷(期):页码： 2021,41(3):135-141

摘要：

本文针对亦庄某再生水厂反渗透系统现投加的AntarcticaTM ROSD 9000型号阻垢剂，考察其在此工况下的适用性和最佳投加浓度。模拟了反渗透生产系统，计算75%回收率及实际进水水质下，反渗透浓水侧仅有Langelier饱和指数超过结垢倾向控制指标， CaCO3结垢倾向明显，有必要适量投加阻垢剂。模拟不同变量条件下的系统安全性，指导实际生产。采用中试装置进行极限碳酸盐硬度试验，得出加药量在2.5ppm-3.0ppm时较合适，即系统运行压力无明显变化，RO浓水侧无结垢倾向；加药量在2.0ppm不利于系统稳定运行。实际生产系统验证，投药量在2.5-3.0ppm时系统运行安全，反渗透清洗频次降低，阻垢剂占系统运行所用生产药剂成本的60%，试验做到有效成本控制。

This paper investigates the applicability and optimum dosage of AntarcticATM ROSD 9000 scale inhibitor in reverse osmosis system of a reclaimed water plant in Yizhuang. Reverse osmosis production system was simulated. Under the calculation of 75% recovery rate and actual inlet water quality, only the Langelier saturation index of reverse osmosis concentrated water exceeded the scale tendency control index, and the CaCO3 scale tendency was obvious, so it was necessary to add appropriate scale inhibitor. Simulate the system security under different variable conditions to guide the actual production. The limit carbonate hardness test was carried out with pilot-scale device, and it was concluded that the dosage of 2.5ppm-3.0ppm was more suitable, that is, the system operating pressure had no obvious change, and RO concentrated water side had no scaling tendency. The dosage of 2.0ppm is not conducive to the stable operation of the system. The actual production system verified that the system operated safely when the dosage was 2.5-3.0ppm, the frequency of reverse osmosis cleaning was reduced, Scale inhibitor accounts for 60% of the cost of production agents used in system operation, and effective cost control is achieved in the test.

李利华(1987-)，女，山东省冠县，硕士，中级工程师，主要从事再生水运营及水处理技术研究

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