摘要:
利用自制的炭基污水净化剂-K净化养猪场污水,用泥鳅成活率、泥鳅微核率和核异常率衡量污水净化效果。结果表明:经净化处理后污水的COD、NH3-N指标显著下降,pH和DO值显著上升,在50%原浓度污水中添加6%净化剂-K处理5 h时净化效果最佳,净化剂的处理量和处理时间与污水的各项化学指标间具有显著或极显著的相关性,泥鳅成活率随着净化剂处理量和处理时间的延长而上升,当50%原浓度污水中添加8%净化剂-K处理4 h时,与未处理的污水相比,泥鳅成活率从0上升至100%,泥鳅微核率和核异常率随着污水中净化剂处理量的增加而显著下降,与未净化的污水处理相比达到极显著差异水平。不同净化处理与成活率、微核率和核异常率间进行回归分析的结果均呈现出极显著的相关性。可见成活率、微核率和核异常率这三项指标均可以作为污水生物毒性的衡量指标。
Abstract:
A custom-made,carbon-based complex Agent-K was used to purify pig farm wastewater.The purification efficiency was indicated by Misgurnus Anguillicaudatus survival rate,micronuclei rate and nuclear anomalies rate.The results showed that,after treatment,the sewage COD and NH3-N decreased significantly,and the pH and DO values increased significantly.The addition of 6% of Agent-K in a solution containing 50% of the sewage for 5 h yielded the optimal purification result.The chemical indicators of the water had a significant or highly significant correlation with the treatment capacity and time.The M.Anguillicaudatus survival rate increased from 0 to 100% when the Agent-K addition increased from 0 to 8% and treated for 4h.The micronuclei rate and nuclear anomalies rate of M.Anguillicaudatus significantly decreased with increased dosage,as compared to the untreated case.The regression analysis indicated a significant correlation among the purification,survival rate,micronucleus rate and nuclear abnormality rate.They could be used as indicators for effluent toxicity determination.
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