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用铸钢废水处理含氟废水的研究

RESEARCH ON TREATMENT OF FLUORIDE-CONTAINING WASTEWATER WITH THE WASTEWATER AFTER CASTING STEEL
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摘要 用大连机车厂的铸钢废水辅以氯化钙、膏状硼泥复合混凝剂作为除氟剂,通过化学络合、沉淀、吸附、絮凝等效应处理含氟废水。若处理100mg/L左右含氟废水,所用药剂之最佳用量分别为:铸钢废水7.5%,氯化钙1.5‰,膏状硼泥复合混凝剂2.5‰,最佳除氟pH值为6.3-8.0。沉降2h,除氟率可达94.5%,沉渣体积占原水体积10%,符合排放标准。处理费用低。 The fluoride-containing wastewater was treated by casting steel wastewater drained from Dalian Locomotive Plant with calicium chloride and boron sludge compound coagulant(pastc) as fluoride removal agent through the effects of removing fluoride such as: complexation、deposition、adsorption、coagulation. If treating the wastewater with about 100mg/L of fluoride, the most proper dosage for removing fluoride is as follows: the casting steel wastewater, 7.5%; calcium chloride, 0.15%; Complex coagulation of paste-status boron sluge, 2.5%; optimum pH value for removing fluoride, 6.3-8.0. When sedimenting for 2h, the fluoride removal rate can reach to 94.5%; the volume of sedimenting dregs accounts for 10% of raw water volume, meeting the discharge standards. The treating method possesses the advantages of low cost and simple operation.
出处 《水处理技术》 CAS CSCD 1998年第4期239-243,共5页 Technology of Water Treatment
关键词 铸钢 氟离子 含氟废水 废水处理 the casting steel wastewater, wastewater treatment, fluoride ion
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  • 1李绍箕,董学德,朱希珍,罗运柏,尹肇森,王聪玲.火电厂灰场排水除氟与降pH的试验研究[J].环境工程,1995,13(6):7-11. 被引量:4
  • 2国家环保局《水和废水监测分析方法》编委会编,魏复盛.水和废水监测分析方法[M]中国环境科学出版社,1997.
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