Study on the management of sudden algal pollution in open sea water cooling system of 1000MW coal-fired power plant
Regarding the phenomenon of seaweed outbreak in the seawater cooling tower of a coastal power plant in the south,recirculating water and make-up water were analyzed to explore the reasons for the explosive growth of seaweed.Meanwhile,in order to quickly and efficiently eliminate potential hazards in recirculating water operation caused by seaweed outbreak,under the condition of continuous operation of recirculating water,the chemical method of using a combination of oxidizing and non-oxidizing biocides was used to strip and kill the seaweed attachments in the tower pond.The results showed that after the make-up seawater mixed with Nutrient-rich water entered the recirculating water,the nutrient content(such as inorganic nitrogen,active phosphate,and dissolved solids)in the recirculating water beneficial for the growth of seaweed increased significantly and led to explosive growth of seaweed finally.And it is mainly attached to the life of Derbesia,Bryopsis and Enteromorpba.After the addition of sodium hypochlorite and SW303,the growth trend of turbidity and chlorophyll a concentration in the circulating water was completely consistent,and the change range was similar,and the algal attachment on the base wall of the tower pond was obviously peeling,indicating that the chemical method adopted had a significant peeling and killing effect on the algae attachment,and the circulating water was still in a safe operating state during the treatment period.
万方数据
维普
