树脂吸附法处理五氯酚钠生产废水

本文用大孔吸附树脂ＣＨＡ—１１１处理五氯酚钠（ＰＣＰ—Ｎａ）生产废水，其中ＰＣＰ—Ｎａ含量为１００００～１５０００ｍｇ／Ｌ，ＣＯＤｃｒ高达１１０００ｍｇ／Ｌ。经中和沉淀－树脂吸附法处理，处理量为１２ＢＶ，吸附流出液中五氯酚（ＰＣＰ）含量≤１．１ｍｇ／Ｌ，ＰＣＰ去除率＞９９％，ＣＯＤｃｒ总去除率≥８０％，树脂脱附液经酸化处理，可回收ＰＣＰ。     

树脂吸附法处理高浓度DSD酸氧化工序生产废水的研究

本文采用大孔吸附树脂固定床工艺处理DSD酸氧化工序生产废水。实验结果表明，ND804大孔吸附树脂对该废水具有良好的吸附－脱附效果，废水经ND804树脂吸附处理后，CODCr由14790mg/L降至1300mg/L左右，COD去除率约为91％，并可回收纯度达80％的DNS酸，废水在得到有效治理的同时实现了废物的资源化。     

超高交联吸附树脂对氯苯酚生产废水的吸附去除研究

用吸附树脂ZH-01对氯酚生产废水的吸附进行了系统研究.实验结果表明,采用ZH-01树脂进行吸附,废水中氯酚类化合物平均去除率达92.3%,CODcr平均去除率达91.0%,树脂经碱液脱附可重复利用,并回收了高浓度的氯酚类化合物且运行稳定,该处理工艺投资少,操作简便,废水在得到有效治理的同时实现了废物的资源化.     

树脂吸附法处理对氨基苯酚生产废水的研究

本文选用ＣＨＡ－１１１吸附树脂对对氨基苯酚生产过程中的含酚废水进行了处理和回收，研究了树脂种类、吸附流速和脱附剂的类型、浓度、流速、温度等对ＣＨＡ－１１１树脂的吸附、脱附性能的影响，并回收对氨基苯酚取得了满意的效果。     

树脂吸附法处理硝基氯苯生产废水研究

本文研究了树脂吸附法处理硝基氯苯废水的工艺条件。实验结果表明，采用Ｈ－１０３吸附树脂处理该生产废水，硝基氯苯的去除率和ＣＯＤｃｒ去除率达９５％以上，用醇－碱混合液进行脱附，树脂脱附再生性能良好。     

红霉素生产废水的树脂吸附法处理研究

采用XDA-1大孔吸附树脂对琥乙红霉素和红霉素碱两种生产废水分别进行动态吸附处理,研究影响吸附的一些因素.结果显示,在室温、原废水pH和较低流速条件下,经处理后废水的COD降低72%～88%;经丙酮解吸后再从解吸液蒸馏回收99%的醋酸丁酯,从琥乙红霉素废水中还可回收大约0.4kg/m3的红霉素粗品.     

大孔树脂吸附法处理模拟邻苯二酚生产废水的研究

本文采用ＮＫＡ－２大孔径树脂吸附法处理模拟邻苯二酚废水,室温下以６ＢＶ／ｈ流速吸附便能达到国家的排放标准。废水中酚的含量≤５．０ｍｇ／Ｌ;系统地研究了温度、流速、废水ｐＨ值等因素对树脂吸附性能的影响;提出分析废水中邻苯二酚含量的高效液相色谱（ＨＰＬＣ）法。     

树脂吸附法处理对硝基苯乙酮生产废水的研究

本文采用树脂吸附法对对硝基苯乙酮生产废水的处理进行了系统研究，实验结果表明，采用Ｈ－１０３树脂处理，废水中硝基物平均去除率达９８％；酚类去除率达１００％；ＣＯＤｃｒ平均却除率达８９％。采用乙醇作脱附剂，脱附效果良好。     

树脂吸附法处理3,6-二氯水杨酸生产废水

研究了树脂吸附法处理3,6-二氯水杨酸生产废水的工艺过程。结果表明,NDA-77吸附树脂对该废水具有良好的吸附-脱附效果。经树脂吸附处理,废水中主要有机污染物2,5-二氯苯酚和3,6-二氯水杨酸均得到去除,总有机碳(TOC)由210mg/L降为20mg/L以下,吸附饱和的树脂可采用稀碱液实现完全再生。经吸附处理去除有机物后,废水中含有20%的KCl,可进入工厂现有的KCl隔膜电解装置,用于KOH的生产。     

树脂吸附法深度处理焦化废水

将树脂吸附剂应用于焦化废水的深度处理,考察了温度、投加量、初始pH、时间和流速对CODcr和色度去除效果的影响.静态吸附实验确定了最佳吸附树脂为NDA-99型树脂,最佳投加量为3.00g/L,无需调节pH,最佳温度为303K,吸附等温线满足Freundlich方程.通过动态实验确定了最适宜工艺条件为:流速20BV/h,单柱废水处理量为200BV/批;处理后废水中CODcr浓度从199mg/L降到100mg/L以下,色度从98倍降到50倍以下.使用8％的NaOH溶液脱附再生,最佳脱附流速为5BV/h.     

ADSORPTION AND DESORPTION OF DSD ACID MANUFACTURING WASTEWATER ON MACROPOROUS RESIN

1. INTRODUCTION 4,4'-diaminostilbene-2, 2'-disulfonic acid (DSD acid) is an important intermediate in the manufacture of dyes, optical brightening and fluorescent whitening agents (Husain et al., 1992). Generally, p-nitrotoluene, as a raw material, is used to manufacture DSD acid through a series of chemical processes, such as sulfonation, nitration, oxidation and reduction and so on. The reaction is as follows.(DNS) (DSD) Due to the complicated production process of DSD acid and th…     

ADSORPTION AND DESORPTION OF DSD ACID MANUFACTURING WASTEWATER ON MACROPOROUS RESIN

4,4‘-diaminostilbene-2,2‘-disulfonic acid (DSD acid) manufacturing wastewater was treated by a macroporous resin in a fixed-bed column.The results showed that this method was suitable for removal of chemical oxygen demands(COD) and color,About 91% COD and 99.5% color removal were obtained under the optimum adsorption conditions.i.e.temperature 20℃,flow rate lbed volume/hour(BV/hr)and pH1-2.The resin was efficiently regenerated with aqueous sodium hydroxide and water.Furthermore,65.5% of 4,4‘-dinitrostilbene-2,2‘-disulfonic acid(DNS) could be recovered from wastewater for possible recycling to the manufactureing process.The adsorption capacity of resin remained constant during the repetition process of adsorption and desorption.     

以弱碱性树脂处理CLT酸废水的研究

筛选得大孔弱碱性阴离子交换树脂D301R进行CLT酸吸附分离研究．考察了pH值、温度，时间等因素对吸附分离性能的影响。在适宜的工艺条件下CLT酸母液的CODcr的去除率达96％以上，且处理后出水CODcr低于100mg／L,同时也进行了柱动态吸附和洗脱再生实验。结果表明，以D301R树脂可有效的去除CLT酸废水中的CODcr，且以NaOH为洗脱剂可实现树脂的再生。     

大孔吸附树脂处理含磺胺废水的研究

利用大孔吸附树脂处理含磺胺废水。实验表明，DRHⅢ树脂对磺胺具有良好的吸附－解吸效果。原废水中磺胺浓度约为17.2g/L,COD约为13750mg/L，经树脂吸附处理后，废水中COD去除率约86％，磺胺的吸附率88．2％，树脂的解吸率为97．5％，磺胺的回收率约86．0％，其纯度达99．8％。在废水有效处理的同时实现了废物资源化，具有良好的环境效益和较高的经济效益。     

ADSORPTION OF SAMARIUM(Ⅲ) ON DIGLYCOLAMIDIC ACID RESIN

The sorption behavior and mechanism of a novel chelate resin, diglycolamidic acid resin(DAAR), for Sm(Ⅲ) were investigated. The optimal sorption condition of DAAR for Sm(Ⅲ) is pH=6.0 in HAc-NaAc medium. The statically saturated sorption capacity is 190mg/g resin at 298K.The Sm(Ⅲ) adsorbed on DAAR can be ehuted reaching 100% by 0.5～2.0mol/L HCl used as eluant.The resin can be regenerated and reused without apparent decrease of sorption capacity. The apparent sorption rate constant is k29s= 1.96 × 10-5 s-1. The apparent activation energy is 26k J/mol.The sorption behavior of DAAR for Sm(Ⅲ) obeys the Freundlich isotherm. The thermodynamic sorption parameters, enthalpy change △H of DAAR for Sm(Ⅲ) is 16. 9kJ/mol. The molar coordination ratio of the functional group of DAAR to Sm (Ⅲ) is 3. The sorption mechanism of DAAR for Sm(Ⅲ)was examined by using chemical method and IR spectrometry. The coordination bond was formed between oxygen atoms in the functional group of DAAR and Sm(Ⅲ).     

ADSORPTION OF SAMARIUM(III) ON DIGLYCOLAMIDIC ACID RESIN

1.INTRODUCTIONThesynthesis,characterizationandsorptionpropertyofpolymericmaterialshavebeenstudiedbytheauthorsandotherresearchersinrecentyears[1~9].Diglycolamidicacidresin(DAAR)isanovelpolymericmaterialwhichcontainsafunctionalgroup[-N(CH2COOH)2].Itnotonlypossessesprotonthatcanexchangewithcation,butalsooxygenatomsthatcancoordinatedirectlywithmetalions.SoDAARcanbewidelyusedinthesorptionofmetalions.Inthisarticle,thesorptionpropertiesofDAARforSm(III)wereinvestigated.Somebasicsorption…