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Removal of boron from water by using reverse osmosis

机译：通过反渗透去除水中的硼

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The removal of boron from water was investigated by using reverse osmosis(RO)technique with SWHR,BW-30(FILMTEC)and AG(GE Osmonics)membranes,not considered previously.The effect of pH and concentration of the feed water and operating pressure on the boron rejection was investigated.The experimental results indicated that boron rejection mostly depends on membrane type,pH of the feed water and operating pressure.The results also showed that boron can be effectively removed only at feed water pH of 11.The lowest permeate boron concentration(the highest rejection,close to 99%)was obtained when SWHR membrane was used.The rejection efficiency of the membranes was found to be in the order of SWHR>BW-30>AG.For all membranes,boron rejection increased with increasing operating pressure.Finally,two different natural(ground)water samples containing 24.8 and 9.4mg/L of boron were treated by using RO with SWHR membrane and obtained results showed that RO could be efficiently used(with>95% rejection)for removal of boron from groundwaters.
机译：通过使用反渗透（RO）技术与SWHR，BW-30（FILMTEC）和AG（GE Osmonics）膜进行了研究（以前未考虑），研究了pH值，给水浓度和工作压力的影响。实验结果表明，硼的脱除主要取决于膜的类型，给水的pH值和工作压力。结果还表明，只有在给水的pH值为11时才能有效去除硼。使用SWHR膜时，硼的浓度最高（最高截留率接近99％）。膜的截留效率依次为SWHR> BW-30> AG。最后，用SWHR膜对RO进行了两种处理，分别处理了硼含量分别为24.8和9.4mg / L的两种天然（地下水）样品，得到的结果表明可以有效利用RO（排阻率> 95％）。用于去除地下水中的硼。

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