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研究论文

PURIFICATION AND UNITITZATION OF SALT AND MERCURY CONTAINIG WASTEWATER FROM CHEMICAL INDUSTRY USING ALGAE-ARTEMIA-PRAWN SYSTEM

摘要：利用藻类-卤虫-对虾系统深度处理含盐含汞化工废水的模拟试验研究表明,该系统对BOD₅和COD去除率分别达95.5%和80.0%,对PO和Hg²⁺去除率都在98%以上,在卤虫密度52.1个/L和36.0个/L,藻类密度25725.8万个/L和20924.9万个/L,水中汞能被不同营养等级的生物累积,在水中汞浓度1.0×10^-4-3.0×10^-4mg/L范围内,藻类和卤虫对水中汞的浓缩倍数分别为7.5×10²-7.8-10³和2.10×10²-1.04×10⁴;卤虫吞食藻类,它对藻体中汞的浓缩倍数较低,变化范围在0.1-1.7之间;食染汞卤虫的对虾对汞的累积不明显。

Abstract：The result of a simulation experiment on purification of salt and mercury containgwastewater using algae-artemia-prawn system showed that 95.5%and 80.8%of BOD₅ andCOD and over 98%of PO and Hg²⁺ were removed.When artemia densities were 52.1and 36.0 ind./L with algae densities of 2.57×10⁸ and 2.09×10⁸ ind./L,the algae remov-ing ratios by artemia were 98.6%and 94.3%,respectively.The Hg in the water could beaccumulated by organisms in different nutrient levels. When the concentraltion of Hg was1.0×10^-4 to 3.0×10²mg/L, the concentration factors in algae and artemia were 7. 5×10²to 7.8×10³ and 2.1×10² to 1.04× 10⁴.The Hg concentration factor in artemia was ratherlow,being 0.1-1.7.No evident of Hg accumulation in prawn was found.