Biological aerated filter filler preparation method capable of simultaneously removing phosphorus and nitrogen, and application thereof

• Main Authors: CHEN DONG, XIE JINGJING, CHEN TIANHU, BAO TENG, ZHU CHENGZHU
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2013
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a biological aerated filter filler preparation method capable of simultaneously removing phosphorus and nitrogen, and application thereof. The preparation method comprises the following steps of: crushing powder ash air-entrained concrete or defective products of a building block manufacturing factory into particles by using a crusher; sieving to obtain particle materials within different grain size ranges to be used as the biological aerated filter filler. The powder ash air-entrained concrete has the characteristics of small density, high void ratio, large specific surface area and the like, has the characteristics of large phosphate adsorption capacity in water and high loaded microorganism quantity when being used for the biological aerated filter filler, and has the function of simultaneously removing phosphorus and nitrogen.