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- hydrogen sulfide precipitation method 硫化氢沉淀法
- sulfide precipitation method 硫化沉淀法
- The invention relates to a sulfide precipitation treatment method of overproof metal contaminant in water, which belongs to the water treatment field. 本发明涉及应对水中超标金属污染物的硫化物沉淀处理方法，属于水处理领域。
- This paper analyzed the mechanism of precipitation floatation, discussed the technology of selective precipitation floatation, the method of sulfide precipitation floatation can treat wastewater containing heavy metal ion and reclaim valuable metals. 摘要对沉淀浮选机理进行了分析，讨论了选择性沉淀－浮选技术，论述了硫化沉淀浮选法不仅能处理矿山含重金属离子废水，同时还能回收其中的有用金属。
- A new method of sulfide precipitation,separation and NaClO_3-H_2SO_4 leaching to recover the copper from electroplating sludges,has been investigated.The recovery rate of copper was 94.5%. 以深圳市某电镀厂所产生的含铜、镍等金属的电镀污泥为对象;研究了硫化物沉淀分离提纯、氯酸钠-硫酸体系浸出回收铜的工艺路线;铜的总回收率为94.;5%25。
- Methods:Sulfate ion precipitation method was used. 方法:采用硫酸根离子沉淀法。
- Major treatment methods for arsenic include sulfide precipitation, or complexation with polyvalent heavy metals. 砷的主要处理方法有硫化物沉淀法，或与多价重金属络合。
- Copper was reduced from 20 mg/l to below detectable limits by sulfide precipitation from a gold-ore extraction wastewater. 用硫化物沉淀法可将金矿抽提废水中的铜含量从20毫克/升降到可检测标准以下。
- Magnesium titanate was obtained with special liquid phase precipitation method. 采用特殊液相沉淀法制备了镁的钛酸盐。
- Copper was reduced from 20 mg/ l to below detectable limits by sulfide precipitation from a gold-ore extraction wastewater. 用硫化物沉淀法可将金矿抽提废水中的铜含量从20毫克／升降到可检测标准以下。
- The precipitation method is an efficient, economical and practical method for removing the colloidal impurities. 是去除胶体杂质有效、经济、实用的方法。
- The square ratio method and basin precipitation method are commended for annual runoff calculation. 在年径流计算中，建议采用面积比法和流域雨量法。
- The pure,Y_2O_3-doped and Sm_2O_3-doped nanozirconia powders were prepared by the precipitation method. 利用液相沉淀方法制备了未掺杂、氧化钇掺杂和氧化钐掺杂的纳米级氧化锆粉体。
- Using ZnSO4.7H2O and urea as raw materials, nanometer ZnO was prepared by homogeneous precipitation method. 摘要以硫酸锌、尿素为原料，采用均相沉淀法合成了纳米氧化锌。
- The discoloring effectiveness of raw L-lactide with active carbon method is better than that of precipitation method. 用活性炭对L-丙交酯粗品进行脱色比用沉淀法脱色效果好,收率较高。
- The spherical zirconia and Ni-coated zirconia composite powders were synthesized by the chemical precipitation method. 摘要采用化学沉淀法分别制备球形氧化锆及镍／氧化锆复合微球粉体。
- Using barium hydroxide octahydrate and urea as raw material,barium carbonate is prepared by homogeneous precipitation method. 以八水氢氧化钡和尿素为原料,采用均相沉淀法制备了碳酸钡粉体。
- MoO42-, PO43- and imidazoline compound would alter the ion selectivity of the iron sulfide precipitate film from biporlar structure to cation-selective. 当硫化亚铁膜上吸附了MoO42-、PO43-等含氧阴离子和咪唑啉缓蚀剂后，双极膜的结构转变为阳离子选择性。
- Nanocrystalline titania powders in the rutile phase were prepared by the homogeneous precipitation method using TiCl4 and TiCl3 as starting materials. 通过TiCl3、TiCl4共同水解可以制备出金红石相的氧化钛粉体.
- The seperation and purification of lipase produced by Candida antarctica(CALB) by ammonium sulphate-actone concerted precipitation method were studied. 采用硫酸铵-丙酮协同沉淀法,对南极假丝酵母产脂肪酶(CALB)进行了分离纯化研究。
