“康河”河道的状况分析与治理

针对"康河"水质化学需氧量为90～120 mg/L,污染程度较轻,提出了合理化的治理方案,即采用生物——生态修复和曝气增氧结合的技术对河道水进行处理。经过半年的河道治理,使化学需氧量降到40 mg/L左右,溶解氧从2.7mg/L恢复到4.5mg/L左右,治理效果较好。

Analysis on Kang-river Water and Its Treatment

The typical monitoring indexes for river-water test are mainly introduced with analysis of each index including dissolved oxygen（DO）, ammonium, nitrogen , chemical oxygen demand （COD） and total phosphorus. Based on relatively low pollution in Kang-river with COD 90-120rag/L, a reasonable water-treatment plan was proposed which was by means of biology-that was combination of ecological restoration with increasing oxygen aeration. By building biological floating island, strengthening control of alga-food chain, the water quality was improved greatly with obvious water visibility improvement, smell containment, significant alga reduction and no sludge or peculiar smell. After half a year treatment, a good result was obtained with COD reducing to about 40mg/L, DO recovering from 2.7mg/L to about 4.5mg/L.