反渗透海水淡化水的调质洗涤

发布时间：2019-01-25 19:21

【摘要】：反渗透海水淡化水与自来水相比具有硬度和碱度低、pH偏酸性等特点,因而其洗涤特性可能有所不同。目前,海水淡化水的洗涤应用尚未见报道,本研究从淡化水水质特点出发,考察了淡化水应用于洗涤过程中洗净率的影响因素,提出了对淡化水适当调质以提高洗净率的实验方案。结果表明,蓝月亮洗涤剂的洗净率与超能和奥妙相近,表面活性物含量可能是其主要影响因素。当蓝月亮用于淡化水洗涤时,洗涤前后pH分别为6.89和6.63,表面活性物含量分别为0.59%和0.23%,钙镁螯合量为2.47 mg·L~(-1),洗净率为12.99%,仅略低于自来水的洗净率13.58%。通过适当提高反渗透海水淡化水的硬度和碱度可以有效提高其洗净率,而硬度调质对淡化水的洗净率的影响更大。当硬度为4~33 mg·L~(-1),碱度为5~40 mg·L~(-1)时,淡化水的洗净率可以达到25%左右。
[Abstract]:Compared with tap water, reverse osmosis seawater desalination water has the characteristics of low hardness and alkalinity and slightly acidic pH, so its washing characteristics may be different. At present, the washing application of seawater desalination water has not been reported. Based on the characteristics of desalination water quality, the factors influencing the washing efficiency of desalination water applied in the washing process were investigated. The experimental scheme of properly adjusting and tempering the desalination water to improve the washing efficiency was put forward. The results showed that the washing rate of blue moon detergent was similar to that of supercharged and mysterious, and the content of surface active substance might be the main influencing factor. When the blue moon was used in desalination water washing, the pH was 6.89 and 6.63, the surfactant content was 0.59% and 0.23%, the amount of calcium and magnesium chelate was 2.47 mg L ~ (-1), and the washing rate was 12.99%, respectively. It was only slightly lower than the cleaning rate of running water 13.58%. By properly increasing the hardness and basicity of reverse osmosis seawater desalination water, the washing efficiency can be improved effectively, and the effect of hardness conditioning on the washing rate of desalination water is greater. When the hardness is 4o 33 mg L ~ (-1) and the basicity is 540 mg L ~ (-1), the washing efficiency of desalinated water can reach about 25%.
【作者单位】：浙江大学环境与资源学院;
【基金】：国家水体污染控制与治理科技重大专项(2014ZX07101-012-04)
【分类号】：P747.5

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