Research On The Installation And Application Of The Improved Water-lifting Aerator In Heihe Reservoir

With the development of industrialization, urbanization and the economic society,the pollution faced by the source water was worse. Water-lifting aerator is a newtechnology of water quality onsite process, it is an economic and flexible technology.For some reservoir that seasonal change is big and has serious endogenous pollution isa better way to improve the water quality.The paper systematically studies the arrangement and method in the installation ofthe water-lifting aerator and the effect of the water-lifting aerator in improving thewater quality of Heihe reservoir, based on the process of construction and laboratoryanalysis. It mainly includes two aspects of content:(1)The installation of thewater-lifting aerator;(2)The effect of the water-lifting aerator in improving the waterquality of Heihe reservoir. The major conclusions are:(1) The most three important aspects are quality, progress and security. When weencounter a problem, we should find the reason of the problem and then find ascience solution.(2) The water-lifting aerator is flexible, so it can adapt to different size of reservoir. Weshould make the construction plans rationally.(3) Heihe Reservoir is stratified. The end of March to the mid-May is the foundationperiod of thermal stratification, the end of May to September is the stablestratification period. While influenced by large amount of input water, thetemperature difference between surface and bottom water decrease gradually inSeptember and October, thus this period was called weak stratification period.November to March in the next year is mixing period.(4) The parameter such as Dissolved oxygen, conductivity, TN, TP is obvious in seasonal change in vertical distribution. And the content of TN, TP, CODMninHeihe Reservoir displayed seasonal changes too.(5) Water-lifting aerator used in Heihe Reservoir could effectively control theformation of water stratification and accelerate the water mixing, meanwhile,enhance the DO in the bottom water. The release of TP, ammonia nitrogen, Fe andMn (Manganese) was decreased. It could boost the oxidation speed of organism.