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    Method for Regeneration of Ion Exchange Resin Causing Reduction of Desorption Solution
    4.
    发明申请
    Method for Regeneration of Ion Exchange Resin Causing Reduction of Desorption Solution 审中-公开
    离子交换树脂再生方法导致解吸溶液的还原

    公开(公告)号：US20160193600A1

    公开(公告)日：2016-07-07

    申请号：US14911994

    申请日：2014-08-08

    申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY YANCHENG ACADEMY OF ENVIROMEN- TAL PROTECTION TECHNOLOGY AND ENGINEERING. . .

    发明人： Aimin Li ,  Zixiao Xu ,  Bicun Jiang ,  Chendong Shuang ,  Qing Zhou ,  Wentao Li ,  Xinchun Ding ,  Yeli Jiang ,  Mengqiao Wang ,  Ke Shen ,  Weiwei Zhou

    IPC分类号： B01J49/00

    CPC分类号： B01J49/50 ,  C02F1/42 ,  C02F1/52 ,  C02F2303/16

    摘要： Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

    摘要翻译： 本文的实施方案涉及在树脂再生领域中减少用于离子交换树脂再生的解吸溶液的方法。 这些实施方案解决了在解吸过程中与再生剂的低利用率和大量解吸溶液相关的问题。 这些实施方案包括再生离子交换树脂，并且再生溶液变成解吸溶液。 在解吸溶液凝结沉淀和浆液分离后，从凝血液中除去大量的有机物，并留下大量的再生剂。 实施方案还包括将再生剂添加到凝血血清中以形成新的或更新的再生溶液以再生离子交换树脂。 因此，可以从解吸溶液产生凝血血清。 这些操作可以重复多次用于树脂再生。

    Method for Sludge-Reduced Electrocatalytic Reduction-Oxidation Pretreatment of Nitrotoluene Production Wastewater
    5.
    发明申请
    Method for Sludge-Reduced Electrocatalytic Reduction-Oxidation Pretreatment of Nitrotoluene Production Wastewater 有权
    污泥还原电硝化还原氧化法硝基甲苯生产废水预处理方法

    公开(公告)号：US20160257582A1

    公开(公告)日：2016-09-08

    申请号：US15023906

    申请日：2014-09-23

    申请人： NANJING UNIVERSITY

    发明人： Aimin Li ,  Yeli Jiang ,  Changming Wang ,  Qing Zhou ,  Zhaolian Zhu ,  Baijun Wang ,  Zixiao Xu ,  Mengqiao Wang

    IPC分类号： C02F1/467 ,  C02F1/66

    CPC分类号： C02F1/4676 ,  C02F1/4672 ,  C02F1/66 ,  C02F2001/46138 ,  C02F2001/46142 ,  C02F2101/34 ,  C02F2101/38 ,  C02F2103/36 ,  C02F2201/46115 ,  C02F2201/4618

    摘要： Embodiments herein relate to methods for sludge reduction for pretreatment of nitrotoluene wastewater using electro-catalytic redox. The embodiments may include (a) adjusting a pH of the nitrotoluene wastewater to 1.5 to 2.0, standing for precipitation, draining sludge of the nitrotoluene wastewater at the bottom, obtaining supernatant of nitrotoluene wastewater, placing the supernatant through a cathode inlet into a cathode chamber of an electrochemical reactor; (b) performing electrochemical treatment, wherein reduction reaction of the supernatant of the nitrotoluene wastewater takes place at the cathode chamber, the nitrotoluene wastewater is placed into the anode chamber for oxidation reaction through the cathode outlet, the catholyte tank, and the anode inlet in sequence; (c) adjusting the nitrotoluene wastewater treated in step (b) via the anolyte tank, and then discharging the nitrotoluene wastewater into a biochemical system. The embodiments reduce toxicity of mixed acid nitration wastewater and therefore improve its biodegradability.

    摘要翻译： 本文的实施方案涉及使用电催化氧化还原来预处理硝基甲苯废水的污泥减少方法。 实施方案可以包括（a）将硝基甲苯废水的pH调节至1.5-2.0，沉淀，排出底部的硝基甲苯废水的污泥，得到硝基甲苯废水的上清液，将上清液通过阴极入口放入阴极室 的电化学反应器; （b）进行电化学处理，其中硝基甲苯废水的上清液在阴极室进行还原反应，将硝基甲苯废水通过阴极出口，阴极电解液箱和阳极入口放入阳极室进行氧化反应 序列; （c）通过阳极电解池调节步骤（b）中处理的硝基甲苯废水，然后将硝基甲苯废水排入生化系统。 这些实施方案减少了混合酸硝化废水的毒性，从而提高了其生物降解性。