化学絮凝法处理海产品加工中高浓度含磷废水
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摘要
针对海产品加工中高浓度含磷废水(1 000 mg/L)会恶化生物除磷的问题,通过化学絮凝法对高磷废水进行处理,分析了几种单一与混合絮凝剂的除磷效果。结果表明:聚合氯化铝与海泡石以质量比m_(聚合氯化铝)∶m_(海泡石)=10∶3制作的混合絮凝剂,在投加量为26 g/L,快速搅拌(160 r/min) 60 min,慢速搅拌(80 r/min) 30 min后,磷去除率最高,达到99. 68%。混合絮凝剂絮凝沉淀物的XRD分析表明,沉淀的主要成分为CaAl_3(PO_3OH)SiO_3,说明海泡石中含有的CaO和SiO_2成分对磷的去除有促进作用。
To solve the problem that the biological phosphorus removal be aggravated by the high-concentration phosphorus-containing wastewater( 1000 mg/L) in seafood processing,the high-concentration phosphorus-containing wastewater was treated by chemical flocculation method,and the phosphorus removal efficiency of several single and mixed flocculants were analyzed. The results showed that the mixed flocculant,which prepared by polyaluminium chloride and sepiolite with mass ratio m_(polyaluminum chloride)∶m_(sepiolite)= 10∶ 3,had the highest phosphorus removal rate of 99. 68% at a dose of 26 g/L,rapid agitation( 160 r/min) for 60 min,and slow agitation( 80 r/min) for 30 min. The XRD analysis of the precipitated flocculation agent after flocculation showed that the main component of the precipitate was CaAl_3(PO_3OH)SiO_3,indicating that the CaO and SiO_2 components contained in the sepiolite have positive effects on the removal of phosphorus.
To solve the problem that the biological phosphorus removal be aggravated by the high-concentration phosphorus-containing wastewater( 1000 mg/L) in seafood processing,the high-concentration phosphorus-containing wastewater was treated by chemical flocculation method,and the phosphorus removal efficiency of several single and mixed flocculants were analyzed. The results showed that the mixed flocculant,which prepared by polyaluminium chloride and sepiolite with mass ratio m_(polyaluminum chloride)∶m_(sepiolite)= 10∶ 3,had the highest phosphorus removal rate of 99. 68% at a dose of 26 g/L,rapid agitation( 160 r/min) for 60 min,and slow agitation( 80 r/min) for 30 min. The XRD analysis of the precipitated flocculation agent after flocculation showed that the main component of the precipitate was CaAl_3(PO_3OH)SiO_3,indicating that the CaO and SiO_2 components contained in the sepiolite have positive effects on the removal of phosphorus.
引文
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[2]方志民,杨莲芬,金大勇.海产品加工废水蛋白质回收的研究[J].浙江工业大学学报,2008,36(2):133-135.
[3]裘巧俊,尹炜,吕谋,等.SBR法处理高盐度海产品加工废水[J].环境工程,2006,24(2):79-81+6.
[4]高瑞昌.鳙鱼中多聚磷酸盐水解机理及无磷保水剂的研究[D].青岛:中国海洋大学,2007.
[5]郑敏,张代均.废水化学法脱氮和化学法除磷的研究[J].科技情报开发与经济,2006,16(1):154-156.
[6]张鹏飞,岳烨,侯嫔,等.人工湖水体富营养化的活性炭处理技术及生态修复建议[J].水资源与水工程学报,2017,28(2):92-98.
[7]孙梦,张培玉,张晨.城市污水的除磷技术分析[J].水处理技术,2010,36(8):16-20.
[8]高伟胜.化学沉淀法处理高浓度含磷废水[J].工业用水与废水,2012,43(4):24-26.
[9]周斌,王桂玉,占国将.化学药剂除磷试验初探[J].净水技术,2015,34(1):25-28.
[10]苗庆显,高立芹,秦梦华.水处理有机絮凝剂的研究进展[J].工业水处理,2006,26(10):14-17.
[11]张永超,冯喆.有机絮凝剂的机理及进展[J].塑料制造,2010(9):79-80+85.
[12]师雯洁,程文,任立志,等.地铁施工废弃泥浆处理试验研究[J].水资源与水工程学报,2017,28(1):141-145.
[13]梁凯.海泡石的矿物学研究与其在环境治理中的应用[D].长沙:中南大学,2008.
[14]游俊仁,林木兰,汪惠阳.高浓度含磷废水处理方法综述[J].化学工程与装备,2010(8):143-146.
[15]王明丽.壳聚糖改性膜制备及其对海产品加工废水处理研究[D].青岛:中国海洋大学,2008.
[16]吴春笃,侯纯莉,杨峰,等.海泡石、膨润土改性壳聚糖对景观水絮凝效果的研究[J].生态环境,2008,17(1):50-54.
[17]徐玉林,徐明波,杨水金.XRD在无机合成中物相分析的应用[J].湖北师范学院学报(自然科学版),2013,33(4):40-46+62.
[18]HUANG Xuejiao,FENG Mi,NI Chengsheng,et al.Enhancement of nitrogen and phosphorus removal in landscape water using polymeric ferric sulfate as well as the synergistic effect of four kinds of natural rocks as promoter[J].Environmental Science and Pollution Research,2018,25(13):12859-12867.
[19]章文琴,李晔,李柏林,等.矿渣制备的无机复合絮凝剂在城市污水深度除磷中的应用[J].环境工程学报,2014,8(9):3567-3571.
[20]江晖,曾庆文,罗正维,等.沼液预处理最优混凝搅拌条件的研究[J].水资源与水工程学报,2014,25(3):147-151.
[21]VAHEDI A,RAHMANI M,RAHMANI Z,et al.Application of polymer-sepiolite composites for adsorption of Cu(II)and Ni(II)from aqueous solution:equilibrium and kinetic studies[J].E-POLYMERS,2018,18(3):217-228.
[22]SONG W,ZHANG L,XU X,et al.Straw fiber composite adsorbent material for treating heavy metal-contaminated wastewater or dye wastewater,comprises straw,acrylic emulsion,nano calcium carbonate,polyethylene glycol,sepiolite powder,sodium silicate solution[Z].CN107913681-A,2018-4-17.
[23]YIN Hongbin,YUN Ye,ZHANG Yinlong,et al.Phosphate removal from wastewaters by a naturally occurring,calcium-rich sepiolite[J].Journal of Hazardous Materials,2011,198:362-369.