In the middle of this year, the Mapocho Sewage Treatment Plant will be put into production. By that time, San Diego will complete the treatment of sewage and reach a suitable level for irrigation. The project, with an investment of about US$1 billion, will use advanced technology to use the biogas produced in the sewage treatment for thermal energy and electricity supply. Free Standing Electric Patio Heater Free Standing Electric Patio Heater,Free Standing Patio Heater,Electric Patio Heater,Outdoor Electric Patio Heater MasonShek Foshan Electrical Appliances Co., Ltd. , https://www.warmwatcher.com