All physical, chemical and biological treatment systems applied for water and wastewater treatment processes it is sludge output depending on flow rate, pollution concentrations and chemicals used. Sludge must be removed through dewatering or drying as solid waste in accordance with environmental legislation.

Depending on the characteristic feature of the sludge, organic and inorganic pollutants, heavy metals, disease-causing bacteria and dangerous chemicals can be found, so treatment sludge is divided into two groups as hazardous waste and non-hazardous waste.

Depending on the characteristics of the sludge, it is also possible to use them for combustion purposes according to fertilizer, filler or energy requirement.

Depending on the content of the sludge, the processes to be applied to the sludge; sludge conditioning includes thickening, stabilization, dewatering and/or drying processes.

Sludge Conditioning; In order for the sludge to be easily separated from the water and to have a good dewatering, some chemicals are added to the sludge and the sludge is subjected to the conditioning process.

Sludge Thickening; By increasing the concentration of sludge to be separated from the water, the sludge dewatering is done in a shorter time, thus saving energy. All sludges in the treatment plant is taken to sludge thickening tank to become more homogeneous.

Sludge Stabilization; It is made to remove pathogenic microorganisms in organic sludge and to prevent odor. Sludge stabilization is done with lime, airly and airless digesters.

In stabilization with lime, the odor in the sludge is removed and the harmful situation is eliminated.

Stabilization with airly digester, also ensures the removal of odor. A sludge is formed for use as fertilizer.

In stabilization with airless digester, methane gas released during the digestion process is used as a source of heat and energy.

Sludge dewatering; Direct removal of the sludge from the treatment plant (physical, chemical, biological, etc.) will be much more costly, so it should be removed by dewatering. The equipment we use for sludge dewatering; Depending on the flow rate of the sludge to be dewatered, filter press or beltpress is used when it is made with pressure, decanter or dehydrator equipment is used when it is made with centrifuges.