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markyuner: ½ð±Ò+60, ·­ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, ¾¡¹ÜÓÐЩÍí£¬µ«ÊÇ»¹ÊǷdz£¸Ðл£¡ 2015-12-08 17:25:23
markyuner: ½ð±Ò+40, ¡ï¡ï¡ïºÜÓаïÖú 2015-12-14 08:28:47
The experimental study on waste alkali treatment has been carried out by extraction-macroporous resin adsorption method to recover the organic contained in due to the difficulty of existing technology to fulfill this purpose. The results show that the ¦Ñ(COD) of the waste alkali decreased from 104651mg/L to 6453mg/L when using hexane as the extraction agent, in pH = 3,volume ratio of hexane to waste alkali liquor is 0.5 and the extraction stages is 2, extraction agent can be recycled by distillation. Then HYA-106 macroporous resin has been use to adsorption the secondary extraction effluent with the preferred condition of adsorption flow rate is 1BV/h, temperature range is 20 ~ 40 ¡æ, pH 3-4, the result can be derived that  the ¦Ñ (COD) on average decreased to 155 ~ 183mg / L, COD removal efficiency is between 97.1% ~ 97.4%, wastewater treatment capacity of per unit volume of  the resin is more than 34BV and the amount of resin adsorption is between 213 ~ 215mgCOD / ml resin, the adsorption-desorption is stability. Total COD removal efficiency of Extraction - Adsorption Process reached 99.8%, which realised the purpose to maximize recovery of the organic in waste alkali.
2Â¥2015-12-08 12:31:29
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