Optimization of planting concrete materials with nitrogen and phosphorus removal characteristic

Abstract

The adsorption performance of zeolite, steel slag and gravel on the nitrogen and phosphorus was studied in this paper, and the best aggregate of concrete with high efficiency and nitrogen removal was optimized; Through dynamic experiments to investigate the formation of white clover, Bermuda grass, Bahia grass and best aggregate combination planting concrete on the removal of ammonia nitrogen, total phosphorus, and optimized high efficiency removal of nitrogen and phosphorus removal of concrete. The result shows that in the ammonia nitrogen and total phosphorus concentration of 20mg/L and 5mg/L, the adsorption capacity of zeolite to ammonia nitrogen was significantly better than that of steel slag and gravel, while the difference between the three is not obvious, the zeolite is the best aggregate for the production of high efficiency nitrogen and phosphorus removal; In the influence of ammonia nitrogen and total phosphorus concentration keeping 5mg/L and 1mg/L, Bahia grass effect on zeolite plant growing concrete removal of nitrogen and phosphorus removal system promoting effect was significantly higher than that of Bermuda grass and white clover. Zeolite and Bahia combinations can be used as the best combination of plants to produce efficient nitrogen and phosphorus removal planting concrete aggregate.