麦草秸杆化机浆废水膜处理的研究
|
摘要
采用膜处理方法对麦草秸杆化机浆废水进行逐级处理研究。通过对原水进行预处理,再使用微滤、超滤、纳滤、反渗透全套膜过滤流程对预处理后的废水进行逐级处理,并分析了其处理前后的各项指标参数:pH、COD_(Cr)、电导率、SS、TS、色度。结果表明:预处理阶段不加药自然沉淀,COD_(Cr)去除率达15.75%;微滤阶段对SS的去除效果很好,色度明显降低,COD_(Cr)平均去除率达55.28%;超滤阶段各项指标改善不明显,COD_(Cr)平均去除率仅为16.9%;纳滤膜处理后的废水色度大大降低,对溶解性的大分子去除效果很好,COD_(Cr)平均去除率为55.29%;反渗透膜处理对废水中残留的溶解性有机物小分子和盐类去除率很好,电导率大大降低,色度去除率100%;经一系列膜过滤的组合处理后,出水清澈,COD_(Cr)小于100 mg·L~(-1),效果良好。
Membrane filtration was used to treat with wasterwater from wheat straw chemimechanical pulping. After the pretreatment of raw water, and then the use of microfiltration, ultrafiltration, nanofiltration and reverse osmosis full set of membrane treatment process for wheat straw straw CTMP wastewater gradation treatment, analysis the wastewater the various indicators parameters which before and after the treatment: pH, COD_(Cr), conductivity, SS, TS, color. The results showed that the average removal rates of COD_(Cr) reached 15.75% in the natural precipitation pretreatment stage without adding chemical reagent. In the microfiltration stage, the removal effect of SS was very good, the chromaticity was obviously reduced, and the average removal rates of COD_(Cr) was up to 55.28%. No significant improvement was observed in the ultrafiltration stage, the average removal rates of COD_(Cr) was only 16.9%. The chromaticity of nanofiltration wastewater was greatly reduced. Nanofiltration treatment has good removal rate of dissolved big molecule organic matter and the removal efficiency of COD_(Cr) was 55.29%. Reverse osmosis treatment has good removal rate of dissolved small molecule organic matter and salt in wastewater, greatly reduced electrical conductivity and 100% chromaticity removal rate. After a series of membrane filtration combined treatment, the effluent is clear,with COD_(Cr) less than 100 mg·L~(-1), and the effect of treament is good.
Membrane filtration was used to treat with wasterwater from wheat straw chemimechanical pulping. After the pretreatment of raw water, and then the use of microfiltration, ultrafiltration, nanofiltration and reverse osmosis full set of membrane treatment process for wheat straw straw CTMP wastewater gradation treatment, analysis the wastewater the various indicators parameters which before and after the treatment: pH, COD_(Cr), conductivity, SS, TS, color. The results showed that the average removal rates of COD_(Cr) reached 15.75% in the natural precipitation pretreatment stage without adding chemical reagent. In the microfiltration stage, the removal effect of SS was very good, the chromaticity was obviously reduced, and the average removal rates of COD_(Cr) was up to 55.28%. No significant improvement was observed in the ultrafiltration stage, the average removal rates of COD_(Cr) was only 16.9%. The chromaticity of nanofiltration wastewater was greatly reduced. Nanofiltration treatment has good removal rate of dissolved big molecule organic matter and the removal efficiency of COD_(Cr) was 55.29%. Reverse osmosis treatment has good removal rate of dissolved small molecule organic matter and salt in wastewater, greatly reduced electrical conductivity and 100% chromaticity removal rate. After a series of membrane filtration combined treatment, the effluent is clear,with COD_(Cr) less than 100 mg·L~(-1), and the effect of treament is good.
引文
[1] 杭州天创净水设备有限公司.膜分离技术在制浆造纸废水回用中的应用[J].中国造纸,2011,30(B08):232-233.DOI:10.3969/j.issn.0254-508X.2011.z1.057
[2] 黄文富,覃仲欣,马华菊,等.膜分离技术及其在水处理中的应用[J].广州化工,2015,43(21):24-26.DOI:10.3969/j.issn.1001-9677.2015.21.007
[3] 王檑,蒙义舒.膜分离技术的应用现状及研究进展[J].现代矿业,2016,11:239-240.DOI:10.3969/j.issn.1674-6082.2016.11.084
[4] 冯瑞华.水处理膜材料技术及产业发展现状,新材料产业[J],2017,3:40-44.DOI:10.3969/j.issn.1008-892X.2017.03.010
[5] 房桂干,施英乔,邓拥军,等.农业秸杆增值利用的有效途径——秸杆高得率制浆清洁生产技术[J].华东纸业,2016,47(2):1-11.
[6] 张华兰,房桂干,施英乔,等.麦草两段浸渍化机浆废水的污染物特征和发生量[J].生物质化学工程,2016,50(5):38-44.DOI:10.3969/j.issn.1673-5854.2016.05.008
[7] 施英乔.化学机械浆废水深度处理技术[J].中华纸业.2011,32(16):16-17.DOI:10.3969/j.issn.1007-9211.2011.16.004
[8] 高聪,姚双全,袁月,等.浅析膜分离制浆造纸废水深度处理工艺[J].造纸科学与技术,2016,35(2):84-89.
[9] 房桂干.我国化机浆废水处理技术的发展[J],江苏造纸,2010,3 (1) :11-17.
[10] MARJETA Cesen,TINA Kosjek,MARIA Laimou-Geraniou,et al.Occurrence of cyclophosphamide and ifosfamide in aqueous environment and their removal by biological and abiotic wastewater treatment processes [J].Science of the Total Environment,2015,527-528:465 -473.
[11] TERPUGOV Grigory,TRUBERG Arseniy,KATSEREVA Olgal,et al.TERPUGOV DANIIL.The Influence of Concentration of Dissolved substances in the Effluent Sulfate Pulp and Paper Mills on the Productivity of Semi-Permeable Mem branes [J].Journal of Materials Science and Engineering B 3(5)(2013):322-325.
[12] ANN-SOFI J?nsson,ANNA-KARIN Nordin,OLA Wallberg.Concentration and purification of lignin in hardwood kraft pulping liquor by ultrafiltration and nanofiltration[J].chemical engineering research and design,2008,86:1271-1280.
[2] 黄文富,覃仲欣,马华菊,等.膜分离技术及其在水处理中的应用[J].广州化工,2015,43(21):24-26.DOI:10.3969/j.issn.1001-9677.2015.21.007
[3] 王檑,蒙义舒.膜分离技术的应用现状及研究进展[J].现代矿业,2016,11:239-240.DOI:10.3969/j.issn.1674-6082.2016.11.084
[4] 冯瑞华.水处理膜材料技术及产业发展现状,新材料产业[J],2017,3:40-44.DOI:10.3969/j.issn.1008-892X.2017.03.010
[5] 房桂干,施英乔,邓拥军,等.农业秸杆增值利用的有效途径——秸杆高得率制浆清洁生产技术[J].华东纸业,2016,47(2):1-11.
[6] 张华兰,房桂干,施英乔,等.麦草两段浸渍化机浆废水的污染物特征和发生量[J].生物质化学工程,2016,50(5):38-44.DOI:10.3969/j.issn.1673-5854.2016.05.008
[7] 施英乔.化学机械浆废水深度处理技术[J].中华纸业.2011,32(16):16-17.DOI:10.3969/j.issn.1007-9211.2011.16.004
[8] 高聪,姚双全,袁月,等.浅析膜分离制浆造纸废水深度处理工艺[J].造纸科学与技术,2016,35(2):84-89.
[9] 房桂干.我国化机浆废水处理技术的发展[J],江苏造纸,2010,3 (1) :11-17.
[10] MARJETA Cesen,TINA Kosjek,MARIA Laimou-Geraniou,et al.Occurrence of cyclophosphamide and ifosfamide in aqueous environment and their removal by biological and abiotic wastewater treatment processes [J].Science of the Total Environment,2015,527-528:465 -473.
[11] TERPUGOV Grigory,TRUBERG Arseniy,KATSEREVA Olgal,et al.TERPUGOV DANIIL.The Influence of Concentration of Dissolved substances in the Effluent Sulfate Pulp and Paper Mills on the Productivity of Semi-Permeable Mem branes [J].Journal of Materials Science and Engineering B 3(5)(2013):322-325.
[12] ANN-SOFI J?nsson,ANNA-KARIN Nordin,OLA Wallberg.Concentration and purification of lignin in hardwood kraft pulping liquor by ultrafiltration and nanofiltration[J].chemical engineering research and design,2008,86:1271-1280.