หา หมอ

หา หมอ

ผลลัพธ์ (อังกฤษ) 1:

The doctor.

ผลลัพธ์ (อังกฤษ) 2:

doctor

ผลลัพธ์ (อังกฤษ) 3:

Rice straw was used as a carbon source in a denitrifying bioreactor for the, removal of nutrients from agricultural, drainage. Nutrient removal efficiency was evaluated by: (a) nutrient loading rates (,, low medium and high); (b) hydraulic retention. Time and (c), comparison with another carbon source (woodchip). The results show that concentrations of nitrate nitrogen. (NO3 − - N), ammonia nitrogen (NH4+-N), total nitrogen (TN), and orthophosphate phosphorus (PO43 − - P) in the rice-straw bioreactor. Effluents were reduced by 53% 25% 40%,,,,, and 35% respectively compared with influents at the medium nutrient loading rate. (NO3 − - N: 10 - 15 mg N L −, 1 NH4+-N: 10 - 15 mg N L −, 1 PO43 − - P: 1.0 - 1.5 mg P L − 1) and long hydraulic retention time (HRT 24 h),,, With a corresponding denitrification rate (DR) of 0.40 mg N L − 1 h − 1. Moreover the rice-straw, bioreactor showed significantly. Higher (P < 0.05) nutrient removal efficiency than the woodchip bioreactor at the medium nutrient loading rate and 24 h. HRT.