Biosolids generated at the Southwest Treatment Plant meet the most stringent federal and state regulations for pollutants.
*Data for 2012 dewatered biosolids applied to agricultural land; Limits are for Exceptional Quality Biosolids.
Reference: MUextension document WQ-425
|Nutrient||** Average %|
|Total Kjeldahl Nitrogen||8.96|
**Data for 2012 dewatered biosolids applied to agricultural land
Nitrogen is essential for plant growth. However, excess nitrogen not utilized by plants can leach into groundwater. Nitrogen exists in different forms in the soil. Ammonia is the form most readily available for uptake by plants. In Table 2, the percentages for nitrate and nitrite, TKN (Total Kjeldahl Nitrogen), and Ammonia are used for compliance with the MO DNR regulations which require calculation of crop nitrogen needs and availability of nitrogen in biosolids applied to land. Phosphorus is also essential for plant growth, but in excess can be detrimental to the health of lakes and rivers. See the Phosphorus page for more details.