The present invention relates to a composition for a porous humidity control board comprising: water purification sludge powder obtained by heat-treating at the temperature of 500 to 700̊C water purification sludge generated in the treatment process which is performed in a water purification facility that produces tap water; 70 to 130 parts by weight of waste glass powder with respect to 100 parts by weight of the water purification sludge powder; 10 to 40 parts by weight of one or more substances selected from silica powder and zeolite powder with respect to 100 parts by weight of the water purification sludge powder; and 70 to 130 parts by weight of clay with respect to 100 parts
1. Humidity control board is great in absorbing and discharging generated harmful substances. - The composition is made of an inorganic material. - The porous humidity control board is able to absorb the harmful substances such as VOC (Volatile Organic Compounds) and formaldehyde. - Be able to develop eco-friendly building materials 2. The material is inexpensive and manufactured at a low cost. - Available for mass production and manufacturing functional materials. - Capable of Recycling a clean water sludge; ○ Clean water sludge disposal plant in YeoJu. (Building Size : 1207㎡) ○ Complete a prototyping project. (porous tile)