Regarding we would like to standardization analytical method of WWTP operator about TSS and VSS.
Please be guided the WWTP operator to following method as below;
TSS
- WWTP operator can do current practice / method (at 103-105 oc). Only to make sure that taken all sample (no have residual solid in the cylinder)
VSS
- Current practice WWTP operator separate two sample, one for analyze TSS and one for analyze VSS.
- Please correct this practice. VSS should same sample of TSS, after analyze TSS (at 103-105 oc) then use same disk continue to analyze VSS (550 oC)
* Our chemist use 5-10mL sample, but we think it might over weight and easy to error. You may try to weight sample around 2-3mL.
And please check the Balance at WWTP because it can't set zero, seems like the switchboard isn't good function. You may need to repair or order new one.
For your information and if any queries please let us know.