一、前言在寒冷地区,给水处理构筑物露天的正常运行,这在我国无疑是一种大胆地尝试。同时,也带来了极大的经济效益。大庆化肥厂原水予处理系统中的加速澄清池,是七十年代从美国“L·A”水处理公司引进的。该装置于76年建成投产使用,几年来运行正常。没有受黑龙江西北部寒冷地区低温影响,而中断或产生不正常的运行状态。该装置是七十年代引进八套合成氨的配套澄清池之一。对其设计与运行过程等情况,已有人作了专门的讨论和评价。本文仅就其冬季运行作以测试报告,并从传热学角 I. INTRODUCTION The normal operation of open-air treatment structures in cold areas is undoubtedly a bold attempt in our country. At the same time, it also brings great economic benefits. The accelerating clarifier in the Raw Water Pretreatment System of Daqing Fertilizer Plant was introduced in the 1970s by the United States “L•A” water treatment company. The device was completed and put into production in the year 76, and it has been operating normally for several years. It was not affected by the low temperature in the cold regions of northwest Heilongjiang, but it interrupted or caused abnormal operating conditions. The device is one of the supporting clarification tanks that introduced eight sets of synthetic ammonia in the 1970s. There have been special discussions and evaluations of the design and operation process. This article only reports on its winter operation and reports from the heat transfer angle.