衣藻与黄丝藻在硫酸铜污水中的富集效应

Accumulative Effect of Chlamydomonas and Tribonema in Waste Water of Salphate of Copper

在春、夏两季选择３个采样点及１个对照点，样品经过ＩＣＰ等检测，结果发现，衣藻（Ｃｈｌａｍｙｄｏｍｏｎａｓ）在该污水中具高富集铜等效应，是污水处理的理想藻种。

When 0.5 mg/L CuSO_4 was added to the culture medium, the growth of Chlamydomonaswas broken. However,those that had adapted to the waste water with 525 mg/L CuSO_4 grew toa large number of pure population,and highly cumulated Cu(41.63%),Fe(34. 92%),Zn(10.09%)and other metals.But Chlamydomonas of pure cultures do not contain these heavy met-als.The algae grown in waste water of CuSO_4 with the single pure population growing.In somewater hole,the number of cells of Chlamydomonas was as high as 2440×10￣6 cells/ L in earlysummer.The number of cells(growing quantity) of Chlamydomonas not only positively correlatedwith the ionic content of Cu,but also to the ionic content of Ca,and Fe.In some water hole,filaments fo Tribonema are 2997.97μg/g and 38109.76μg/g respectively,500 times and 381times the normal needful quantity of plants.The Tribonema filaments copper cumulative factor of3,4 and 6 indicates that the cumulation of Cu positively correlated with the Cu content in the wa-ter.The copper content of Tribonema chlorophyll is as high as 1756.44μg/g showing that thecomplexing content of chlorophyll molecule and copper was corresponded to 59%of the total cop-per content of the algal filament.In control group(beside the waste water of CuSO_4),thechlorophyll molecule coppr of Salxinia natans (belonging to water fern) only contained 52.8μg/g;but the Mg content was as high as 4963.79μg/g, which was 10 times higher than Tribonemachlorophyll molecule Mg. The waste water of CuSO_4 containing Fe and Ca compound may elimi-nate the toxicity of CuSO_4 from the algae. Chlamydomonas and Tribonema had adapted themselves tothe waste water of CuSO_4,and highly cumulated Cu , Fe, Ca and other elements,and chloro-phyll molecule Mg were replaced by Cu and other elements in physiological reaction。