Wastewater and sludge analysis

Waste cleaning

- NN 66/19; Water Act
- NN 26/2020; Ordinance on limit values ​​for wastewater emissions
- NN 3/2020; Ordinance on special conditions for performing the activities of sampling and testing of water
- Resolution on fulfillment of special conditions for performing the activity of sampling and testing of wastewater CLASS: UP / I-325-07 / 20-02 / 01.

Wastewater is water that has been used in a process where its quality has been degraded, which is why it can no longer be reused or released into the environment before proper treatment.

Sampling wastewater

Our laboratory is authorized by the Ministry of Environmental Protection and Energy to perform wastewater sampling activities.

We analyze following parameters in wastewater:

  1. pH value
  2. Temperature
  3. Color
  4. Smell
  5. Sedimentary substances
  6. Suspended substance
  7. BPK5
  8. KPKCr
  9. Total organic carbon (TOC)
  10. Adsorbable organic halogens (AOX)
  11. Phenols
  12. Detergents, anionic
  13. Detergents, nonionic
  14. Detergents, cationic
  15. Arsenic - Graphite technique
  16. Copper - Graphite technique
  17. Barium
  18. Bor
  19. Zinc - Graphite technique
  20. Cadmium - Graphite technique
  21. Cobalt - Graphite technique
  22. Total chrome - Graphite technique
  23. Chrome (VI)
  24. Manganese - Graphite technique
  25. Nickel - Graphite technique
  26. Lead - Graphite technique
  27. Silver
  28. Iron - Graphite technique
  29. Mercury - DMA
  30. Fluorides dissolved
  31. Sulfites
  32. Sulphides dissolved
  33. Sulfates
  34. Chlorides
  35. Total phosphorus
  36. Orthophosphorus
  37. Chlorine free
  38. Chlorine total
  39. Total nitrogen
  40. Ammonium nitrogen
  41. Nitrites
  42. Nitrates
  43. Cyanides free
  44. Silicon - total silicate
  45. Electrical conductivity
  46. ​TDS - total solute
  47. Salinity
  48. Dissolved oxygen
  49. Ozone
  50. Dry residue at 105˚C
  51. Visible waste material
  52. Dry residue annealed at 550 ˚C
  53. Suspended annealed substance 550 ˚C


  • NN 178/204; Waste Act
  • NN 94/2013, 73/17t, 14/19, 98/19; Law on Sustainable Waste Management
  • NN 38/2008; Ordinance on sludge management from wastewater treatment plants
  • NN71 / 2019; Ordinance on the protection of agricultural land from pollution
  • NN 94/13 Ordinance on by-products and revocation of waste status

Industrial wastewater, such as food waste from the food industry, is biodegradable and can be mixed with domestic wastewater. Sludge from municipal wastewater is not worthless waste.

According to the Law on Sustainable Waste Management, waste sludge belongs to special categories of waste, and management of wastewater from wastewater treatment plants is prescribed by the Minister with an ordinance in cooperation with the Minister responsible for water management.

The Ordinance on sludge management from wastewater treatment plants (NN 38/2008) was created on the basis of the Waste Act, and was drafted for the use of sludge for agricultural purposes. In order to prevent harmful effects on soil, plants, animals and humans, sludge must be used in an adequate way so that the nutrient needs of plants are taken into account, the quality of the soil is preserved, and the quality of surface and groundwater is preserved.

We analyze sludge for following parameters:

  • dry matter content
  • pH value (pH CaCl2 and pH H2O),
  • total nitrogen,
  • total phosphorus,
  • organic matter or organic carbon,
  • carbonate content,
  • proportion of active lime,
  • element content: K, Ca, Mg, Fe, Zn, Cu, Mn, Mo, Na,
  • content of heavy metals in dry matter: As, Cd, Ni, Pb, Cr, Mo, Co, Hg
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