如何既让千家万户“温暖过冬”又让“蓝天常在”？多地探索清洁供暖新方式

Core Viewpoint - The article discusses the innovative clean heating solutions being implemented in Gansu Province, China, to ensure residents stay warm during the heating season while also addressing air pollution concerns. Group 1: Clean Heating Projects - The Yan'erwan sewage source heat pump station in Lanzhou is the first project in Gansu to utilize sewage as a heat source, providing heating to surrounding areas [1][3] - The heat pump station features five 10-megawatt sewage source heat pump units that can be adjusted based on weather conditions to meet heating demands [3] - The Ma Tan geothermal heating demonstration project extracts 74°C geothermal water from 2,300 meters underground, which is then filtered and delivered to residents [5] Group 2: Environmental Benefits - The geothermal heating project covers an area of approximately 750,000 square meters, providing heating for over 7,000 households and saving more than 7,000 tons of standard coal annually [9] - The clean energy heating initiatives in rural areas include solar thermal systems that convert solar energy into heat, ensuring warmth without traditional coal stoves [10][12] - The use of biomass clean energy boilers in rural households utilizes agricultural waste, reducing coal pollution and promoting resource recycling [14][18]