电镀与涂饰
電鍍與塗飾
전도여도식
ELECTROPLATING & FINISHING
2013年
8期
42-45
,共4页
羧甲基壳聚糖%硅酸钠%氯化铁%复合胶体%电镀废水%六价铬%絮凝
羧甲基殼聚糖%硅痠鈉%氯化鐵%複閤膠體%電鍍廢水%六價鉻%絮凝
최갑기각취당%규산납%록화철%복합효체%전도폐수%륙개락%서응
carboxymethyl chitosan%sodium silicate%ferric chloride%composite colloid%electroplating wastewater%hexavalent chromium%flocculation
以 FeCl3和 Na2SiO3为原料制得聚硅酸氯化铁(PFSC)，再与羧甲基壳聚糖(CMC)复合，获得低成本、高絮凝能力的新型无机-有机复合胶体，并将其用作絮凝剂，探讨了其投加量以及温度、pH、絮凝时间等工艺条件对电镀废水中六价铬去除率的影响。结果表明：室温下加入600 mL/L复合胶体絮凝1 h时， Cr(VI)去除率达到99.75%以上。与单一絮凝剂相比，该复合絮凝剂投加量少，絮凝时间短，pH范围广。
以 FeCl3和 Na2SiO3為原料製得聚硅痠氯化鐵(PFSC)，再與羧甲基殼聚糖(CMC)複閤，穫得低成本、高絮凝能力的新型無機-有機複閤膠體，併將其用作絮凝劑，探討瞭其投加量以及溫度、pH、絮凝時間等工藝條件對電鍍廢水中六價鉻去除率的影響。結果錶明：室溫下加入600 mL/L複閤膠體絮凝1 h時， Cr(VI)去除率達到99.75%以上。與單一絮凝劑相比，該複閤絮凝劑投加量少，絮凝時間短，pH範圍廣。
이 FeCl3화 Na2SiO3위원료제득취규산록화철(PFSC)，재여최갑기각취당(CMC)복합，획득저성본、고서응능력적신형무궤-유궤복합효체，병장기용작서응제，탐토료기투가량이급온도、pH、서응시간등공예조건대전도폐수중륙개락거제솔적영향。결과표명：실온하가입600 mL/L복합효체서응1 h시， Cr(VI)거제솔체도99.75%이상。여단일서응제상비，해복합서응제투가량소，서응시간단，pH범위엄。
Poly-silicic-ferric chloride (PFSC) was prepared from FeCl3 and Na2SiO3, and then blended with carboxy-methyl chitosan (CMC) to synthesize a novel low-cost and high-performance inorganic-organic composite colloid as flocculant. The effects of the dosage of the composite colloid, temperature, pH, and treatment time on removal of Cr(VI) in electroplating wastewater were studied. The results showed that the removal rate of Cr(VI) reached >99.75% after flocculation with 600 mL/L composite colloid at room temperature for 1 h. The application of the composite flocculant has the advantages of less dosage, shorter flocculation time, and wider pH range as compared to using a single flocculant.
