海冰淡化方法研究:浸泡离心脱盐法  

STUDY ON THE METHOD OF DESALTING SEA ICE∶SOAKING AND CENTRIFUGING TO DESALT SEA ICE

作　　者：徐学仁[1] 陈伟斌[1] 刘现明[1] 付云娜[1] 孙育红[1] 林忠胜[1] 关道明[1] 

机构地区：[1]国家海洋环境监测中心,大连116023

出　　处：《海洋科学》2003年第10期50-53,共4页Marine Sciences

基　　金：国家高技术研究发展计划"渤海海冰作为淡水资源的可行性研究" ;国家自然科学基金项目40246027号

摘　　要：在长兴岛海域采集了两种冰 ,灰白冰Ⅰ号和灰白冰Ⅱ号 ,盐度分别为2.64和5.58,经过破碎过0.6cm网筛 ,筛下冰块作为淡化用冰。实验冰温 -3～ -2.5℃,离心速度2000r/min ,离心时间2min,浸泡法最高脱盐率66% ,只能作为盐碱地灌溉用水。浸泡液的加入比例对脱盐效果有影响 ,冰水比例为1∶3或1∶4比较合适。浸泡离心法最高脱盐率91 % ,该水质符合生活饮用水标准、地面水环境质量标准、农田灌溉水质标准。浸泡液的加入比例和浸泡液的盐度都影响浸泡离心的脱盐效果。浸泡液的加入比例越大、盐度越低脱盐率越高。灰白冰Ⅰ号原始盐度低于灰白冰Ⅱ号 ,经过淡化后仍然未改变。Gray iceⅠand gray iceⅡwere collected from Changxing island.The average salinity of gray iceⅠis2.64,the other is5.58.In the experiment,the temperature of the ice is-3～-2.5℃,the centrifugal speed is2000r/min,the centrifugal time is2min,and the highest desalting proportion is about66%.This water can only be used to irrigate the land encrusted by salt.The highest desalting efficiency of this method is91%.The ice/water ratio can influence the desalting effort.After desalting,the water quality can reach the standard of drinking water,grounding water and irrigating water.Both the ratio and the salinity of steep can influence the desalting effort.The higher adding ratio and lower salinity of the steep lead to the higher desalting efficiency.The original salinity of gray iceⅠis lower than that of gray iceⅡ.There is no change after desalting.So we can conclude that this method is desalting by ratio.

关 键 词：海冰淡化 浸泡 离心 脱盐 

分 类 号：P747[天文地球—海洋科学]