摘要
设计了由原水预处理系统、太阳集热器、保温水箱、温度控制系统、高压水泵和反渗透膜组件(TW30-4040型)构成的太阳能反渗透水处理实验装置。实验研究了利用清洁、经济的太阳能提高进水温度后反渗透膜的产水量和水质变化。结果表明,在压力为0.9MPa,将水温从18℃提高到38℃,产水量从6.5L/min增加到8.8L/min,提高了35.5%,出水电导率从2.8μs/cm仅上升到3.1μs/cm,出水硬度仍能保持在0mmol/L,可满足中低压锅炉补给水的水质要求;在保持产水量为8L/min的条件下,将进水水温从18℃提高到38℃,可将反渗透运行压力从1.18MPa降至0.8MPa,操作压力下降了32.2%,动力消耗可相应降低32.2%。这表明利用太阳能降低反渗透运行压力,具有节能减排效益和提高设备运行的安全性和可靠性的优点,可广泛应用于水的软化除盐、海水淡化以及污水的深度处理。
Reverse osmosis employing solar energy was designed, which composed of pre-treatment process, solar energy heater, water tank, temperature control device, high pressure pump and reverse osmosis membranes（TW30-4040）. Permeation flux and permeation water quality as functions of temperature caused by solar energy heater were studied by experiment. The results showed that the permeation flux increases 35.5%, from 6.5L/min to 8.8L/min if raw wafer is heated from 18℃ to 38℃ by solar energy as the operation pressrue at 0.9MPa; the conductivity only increased from 2.8μs/cm to 3.1/μs/cm and hardness was 0mmol/L, meeting the water quality standard of middle or low pressure steamboiler. The operation pressure could drop by 32.2%, from 1.18MPa to 0.8MPa if the raw water was heated from 18℃ to 38℃ as the permeation flux at 8L/min. Dropping operation pressure by solar energy, which could save power, cut environmental pollutants, and improve operational safety and reliability, could be widely applied in water softening, desalination of seawater, and deeply treatment of wastewater.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2010年第11期1419-1422,共4页
Acta Energiae Solaris Sinica
基金
江苏省环保厅基金(200802)
关键词
太阳能
反渗透
水处理
solar energy
reverse osmosis
water treatment
