TSS and BOD

Total suspended solids (TSS) and biological oxygen demand (BOD) are two measures that are frequently used to assess how well a sewage treatment system is working.

BOD is a measurement of how much oxygen is used by microorganisms in the wastewater to break down organic materials.

TSS calculates the volume of suspended particles in wastewater. Common units of measurement for BOD and TSS are milligrammes per litre (mg/L) or parts per million (ppm).

Lower levels of BOD and TSS show that the wastewater treatment system is successfully eliminating organic matter and solids, whereas greater levels could show that the system is not working as effectively.

Effluent grade

Another crucial metric for assessing the efficacy of the system is the quality of the wastewater that is discharged from the sewage treatment system after being treated. Testing for a number of factors, including pH, temperature, dissolved oxygen, and the presence of pollutants including bacteria, nutrients, and chemicals, can be used to determine the effluent’s quality.

In order to establish if the system is in accordance with regulations, the effluent quality is often assessed in terms of the concentration of these criteria.

System performance

By comparing the amount of wastewater that is treated to the amount of effluent produced, the effectiveness of the sewage treatment system may be evaluated.