1) chemical precipitation agent
化学沉淀剂
2) chemical precipitation-solvent precipitation process
化学沉淀-溶剂沉淀法
3) chemical sedimentation
化学沉淀
1.
On the basis of the basic principle of chemical sedimentation process, the chemicalsedimentation process that treats sulphide in acetylene sludge wastewater using FeSO.
根据化学沉淀法的基本原理，提出了利用ＦｅＳＯ４及盐泥（工业废料）为药剂的化学沉淀法处理电石渣浆废水中硫化物的处理方法。
4) chemical precipitation
化学沉淀
1.
Recovery of magnesium ammonium phosphate from ammonia nitrogen wastewater by chemical precipitation;
化学沉淀法从氨氮废水中回收磷酸铵镁
2.
Production of ZnS from flue gas SO_2 through the combined processes of microbial transformation and chemical precipitation;
用微生物转化-化学沉淀法从烟气SO_2中制取ZnS
3.
Mathematical model for treating electroless nickel plating wastewater by chemical precipitation and its application;
化学沉淀法处理化学镀镍废水的数学模型及应用
5) chemical deposition
化学沉淀
1.
SO42-was removed by the chemical deposition techniques,and COD was then removed by the batch Anaerobic Hydrolysis-acidogenesis-Aerobic biotechnology which was performed under different influent organic loads adjusted by changing HRT and MLSS.
方法利用化学沉淀法去除部分SO42-,然后利用序批式厌氧水解酸化-好氧生物实验对其中的COD进行去除,通过改变水力停留时间(HRT)和菌浓度(MLSS)调整进水生物负荷,根据生物去除负荷及出水情况分析进水生物负荷对处理效果的影响。
2.
Pilot scale and lab scale experiments were conducted to pretreat the ion exchange wastewater (the main part of the monosodium L glutamate (MSG) wastewater) by means of Fe C deoxidization to increase the pH and biodegradation, lime counteraction and aeration by air or chemical deposition to remove ammonia.
采用铁碳法、吹脱法和化学沉淀法对味精废水中离交废水的预处理进行了中试和小试。
3.
The paper introduced the method and the theory of Lead Sulfide film preparation——Chemical Deposition and analyzed the reason of outshoot cling to the surface of Lead Sulfide film during the process of chemical deposition.
本文介绍了PbS薄膜常用化学沉淀的制备方法及原理,深入分析了基片沉淀过程中表面出现突出物现象的原因,薄膜基片电镜分析以及改善PbS基片表面均匀性的工艺方法。
6) precipitation chemistry
沉淀化学
补充资料：化学沉淀剂
化学沉淀剂
chemical precipitation agent
huoxue ehend旧nJ-化学沉淀剂(ch。二ical prec三pitat沁n agent) 能使废水中的溶解态污染物(分子或离子)转化为不溶态而沉淀析出的化学物质。常用的化学沉淀剂有氢氧化物(如NaOH、Ca(OH)2)、碳酸盐(如Na:CO3、Ca-CO3、MgCO3)、硫化物(NaZS、HZS、CaS)、卤化物(NaCI)，有机的淀粉黄原酸醋亦有使用的。用化学沉淀法处理的污染物主要为重金属离子(Ag+、HgZ+、CdZ十、PbZ+、Zn之+、Cr3一、Cu“+、Fe“十、NiZ+等)、碱土金属离子(C aZ十、BaZ十等)及某些非金属(砷、氟、硫、硼)。作为反应产物的氢氧化物(如Cu(OH)2、C:(OH)3、Fe(()H):等)、碳酸盐(如BaCO3、CdC()3等)、硫化物(如HgZS、HgS、AgZS等)及卤化物(仅有AgCI及CaFZ)等，因其溶度积很小而沉淀析出。应用化学沉淀法时，要准确控制溶液的pH值。 (周开君)
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参考词条