Application Research on Combined Technology of River Ecological Restoration
River pollution not only damages the water environment,but also affects urban development and people's quality of life.At present,traditional processes are mainly used to improve river water quality,such as aeration,ecological floating islands,and ex-situ treatment,however,traditional processes affect river flooding and have certain requirements for water quantity.Taking a river in Zhangzhou city,Fujian province as an example,a combination process of"ecological factor regulation+functional ecological reef purification+in-situ microbial regulation"is adopted to improve water quality through engineering measures.The results show that after the application of the combined process,the dissolved oxygen content in the river increases by 47.4%,while the ammonia nitrogen and total phosphorus content decreases by 63.5%and 56.5%,respectively,and the water quality indicators stably meet the ClassⅢwater quality requirements of the Environmental Quality Standards for Surface Water(GB 3838-2002).This combination process is environmentally friendly and can be used to improve river water quality.
riverecological restorationimprovement of water qualityin-situ treatment
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