Sludge Testing

Sludge is the solid sedimentary material produced by water and wastewater treatment processes. Since sludge usually contains a large amount of harmful substances (organic matter, heavy metals, pathogens, etc.), discharge of untreated sludge into the environment can easily cause soil pollution. Therefore, relevant international environmental protection departments have strengthened sludge testing and hazardous sludge waste identification.

Sludge testing is an important means of scientific evaluation of sludge, aiming to ensure reasonable treatment and effective utilization of sludge. Sludge testing can help us understand the composition, nature and hazard level of sludge, and provide a basis for formulating corresponding treatment plans. At the same time, sludge testing can also guide the operation and management of sewage treatment plants and improve the efficiency and quality of sewage treatment.

STEMart provides comprehensive sludge testing services to determine the degree of pollution and hazards of sludge in order to provide a basis for the formulation of treatment plans and improve the efficiency and quality of sewage treatment.

Test Samples

Domestic sewage sludge, industrial wastewater sludge, feedwater sludge, river and lake sludge, etc.

Standard Tests

• Component analysis
  • Heavy metal analysis
  • Organic matter analysis (total petroleum hydrocarbons, benzene series, volatile organic compounds, semi-volatile organic compounds, phenols, polycyclic aromatic hydrocarbons, phthalates, organochlorine pesticides, organophosphorus pesticides, polychlorinated biphenyls, dioxins, hexachlorocyclohexanes, DDT pesticides, etc.)
• Content testing
  • Sand content
  • Heavy metal content
  • Moisture content
  • Total alkalinity
  • Fluoride content
  • Cyanide content
  • Total pollutant
  • Total particulate matter
  • Total nitrogen oxide
  • Total ammonia nitrogen
  • Total volatile organic compounds
  • Total amount of other pollutants
• Microbiological index testing
  • Fecal coliform
  • Total bacterial count
  • Mortality rate of roundworm eggs
  • Pathogen detection
• Physical and chemical analysis
  • pH value
  • Firing loss
  • Radionuclide
  • Low calorific value
  • High calorific value
  • Particle size
  • Unit weight

For more information about our sludge testing services, please contact us.