• 专利标题:   Treating high-concentration organic wastewater containing organic/inorganic double salt comprises pumping high-concentration organic wastewater containing organic/inorganic salts to separator, separating solid phase or gas phase from aqueous phase, and recycling obtained desorbent.
  • 专利号:   CN115072925-A
  • 发明人:   LIU X, WU H, CUI W, WANG J, YANG L
  • 专利权人:   UNIV CHANGZHOU
  • 国际专利分类:   C02F009/10
  • 专利详细信息:   CN115072925-A 20 Sep 2022 C02F-009/10 202299 Chinese
  • 申请详细信息:   CN115072925-A CN10776464 04 Jul 2022
  • 优先权号:   CN10776464

▎ 摘  要

NOVELTY - Treating high-concentration organic wastewater containing organic/inorganic double salt comprises (i) pumping the high-concentration organic waste water containing organic/inorganic double salts to the neutralization reaction separator; (ii) sending the aqueous phase into the multistage adsorption/desorption column, flowing the aqueous phase from the primary adsorption/desorption column, and discharging the adsorption liquid from the last stage adsorption/desorption column; (iii) sending the residual mother liquor back to the waste water tank for recycling, desorbing the adsorbent near saturation in the multi-stage adsorption/desorption column with a desorbent to obtain a desorbed liquid, and regenerating the adsorbent; and (iv) sending desorption liquid into desorbent recovery tower, and recycling the desorbent at the top of the tower, and sending the organic waste liquid flowing out from the bottom of the tower into the organic waste liquid tank USE - The method is useful for treating high-concentration organic wastewater containing organic/inorganic double salt. ADVANTAGE - The method produces high quality recovered inorganic salt thorough treatment of organic matter and realizes recycling of adsorbent and desorbent. DETAILED DESCRIPTION - Treating high-concentration organic wastewater containing organic/inorganic double salt comprises (i) pumping the high-concentration organic wastewater containing organic/inorganic double salts to the neutralization reaction separator and adjusting the pH value of the wastewater with acid or alkali, during the neutralization reaction separator, adjusting the pH to form the oil phase, decomposing the organic salt, and separating the solid phase or the gas phase from the aqueous phase; (ii) sending the aqueous phase into the multistage adsorption/desorption column, contacting adsorption with different adsorbents, flowing the aqueous phase from the primary adsorption/desorption column, and discharging the adsorption liquid from the last stage adsorption/desorption column; (iii) recycling the adsorption liquid technical grade inorganic salt, and sending the residual mother liquor back to the waste water tank for recycling, desorbing the adsorbent near saturation in the multi-stage adsorption/desorption column with a desorbent to obtain a desorbed liquid, and regenerating the adsorbent, and recycling for step (ii); and (iv) sending desorption liquid into desorbent recovery tower, where desorbent recovery tower is a rectification tower, and recycling the desorbent at the top of the tower, and recycling recycled desorbent for step (iii), and sending the organic waste liquid flowing out from the bottom of the tower into the organic waste liquid tank for further treatment. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chat of the treating high-concentration organic wastewater containing organic/inorganic double salt (Drawing includes non-English language text).