Study On Effect Of Ecological Restoration Experiment Of Northeast Street River In Suzhou

Since 2011,the urban area of Suzhou through the decapitated River getting through,dry river dredging,pollution source control,water self-flowing,stone lake water quality improvement project and a series of actions,after three years of efforts,urban water quality has improved significantly.The question of water smoothing,water moving and water activing have been solved.But there is a big gap between the facts of the water transparency and water sensory and public expectations of the people.To further enhance the urban river water quality,restoration of "bridges" of the ancient city water lane view,to achieve the goal of "clear water,beautify water ".Through visit to Hangzhou,Kunshan and other places,select the Shanghai Taihe Water Environment Technology Development Co.,Ltd."algae guided water ecosystem construction technology" in the ancient city of Suzhou Dongbei Street River ecological test,the test start from December 2014 to July 2015.In this paper,the whole process of ecological restoration experiment of Dongbei Street is studied.The data of water quality monitoring from December 2014 to July 2016 are selected,and the water transparency is taken as the main factor to evaluate the water quality.Geography and water body status of the algae,the analysis of the problems existing in the river channel,combined with related issues raised algal control algae restoration program,discussed algal control algae repair program design ideas,concepts,principles and basis,and in the early works,Gas,submerged plants,algae,aquatic animal colonies,ecological balance of several levels,refine the target,the implementation of specific implementation plan.Through the data analysis of the control group,the transparency and water quality of algae control algae restoration were analyzed.Through a large number of experiments,it is proved that the application of algae-controlling algae in the restoration of the Dongbei Street River in Suzhou can effectively improve the transparency,but it has no good improvement in ammonia nitrogen,total phosphorus and total nitrogen.Through the analysis of the experimental factors,it is necessary to meet the requirements of riverbed suitability,light suitability,little water flow and few pollutants to meet the requirements of the experiment.Only by satisfying the above four conditions,can the algal bloom control algae Repair program replication and promotion,or in accordance with the actual situation of the local,objective analysis,re-design.This paper studied the effectiveness of algal control algae restoration program in the ecological restoration of Dongbei Street river,and accumulated experience for the ecological restoration of river water,with a view to promoting the implementation of the algal control algae restoration program.