Graphene micro-flocculation algae water separation technology invested in Erhai Lake treatment can effectively control blue algae blooms

For the environmental protection industry, especially lake management, the treatment of cyanobacteria blooms has always been an issue of great concern to everyone. On September 22, a new technology for the treatment of blue algae blooms-"graphene micro-flocculation algae water separation technology" was officially put into use at the Taoyuan Wharf in Erhai, Dali, Yunnan.

It is understood that the graphene micro-flocculation algae water separation technology is an integrated algae water separation device developed by Changzhou Delofite Filtration System Co., Ltd. and the Institute of Hydrology of the Chinese Academy of Sciences. At present, this device has obtained 2 national invention patents and 8 practical applications. New patents. Its most notable feature is that it can be collected and managed continuously during the entire growth cycle of cyanobacteria, and is not affected by the density of the algae, and can operate around the clock, which can effectively control the bloom of cyanobacteria.

The traditional algae fishing process can only process dense algae, and it can only be salvaged after the dense algae bloom erupts. This can only carry out subsequent remedial treatment of the destroyed environment, and the algae water put into use this time The separation device is mainly through the installation of a ship-mounted platform, which can be more flexible and convenient to deal with algae water of different concentrations and different water areas. The algae water is sucked by a submersible pump and added with medicine, and enters the algae water separator after rapid coagulation to make the algae water The water is completely separated, and then the clean water is directly discharged into the lake. The separated high-concentration algae residue water is transported into the algae slurry concentration device, the water is further separated, and the separated clean water is simply processed and returned to the front end of the algae water separator For cyclic separation, the algae mud is pumped into the screw press through the algae slurry pump, and the squeezed waste water is water treated and then returned to the front end of the algae water separator for separation.

According to Gong Yinfeng, general manager of Changzhou Delofite Filtration System Co., Ltd., this new process technology can operate around the clock to separate algae cakes with 90% water content and clean water. This technology is used in Dabokou and Chengjiang, Caohai, Dianchi Lake, Kunming. The experiment of Dongdahe Reservoir has achieved a set of 10,000 tons/day, and the service area of ​​a single device exceeds 1 million square meters of water area. Compared with the traditional deep well air flotation process, it can save more than 60% of investment, increase efficiency by 200%, and treat Advantages such as cost reduction by 50%.

In addition to the Erhai Lake, the graphene microflocculation algae water separation technology will be widely used in lake management and river management across the country in the future to give full play to the dual advantages of new technology in environmental protection and economic efficiency.