Sludge Treatment

Sludge Treatment

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Sludge Treatment

The most widely used process for conditioning of sewage sludge prior to anaerobic digestion (Pre-digestion Process) is the thermal hydrolysis process (THP) technology. The thermal hydrolysis process consists of a step-wise heating and cooling of sludge and a batch “reaction” (or “holding”) time at the hydrolysis temperature (150 – 170 °C).

The thermal hydrolysis process will achieve the following goals:

Achieve full sterilization of the treated sludge
Increase the conversion of organic matter into biogas
Produce a stable, low-odor, high dry solids end product
Improve the dewater ability of the sludge after digestion
Reduce the viscosity of the sludge and allow for high dry solids digestion

Sludge dewatering separates sludge into liquid and solid components for waste minimization. There are various technologies for sludge dewatering, including plate & frame and belt filter presses, centrifuging, and geomembranes. In addition to these, there are other options available.

It is noteworthy that Zirsakht Tadbir Arian (ZETA) Company undertakes the process of sludge treatment and wastewater dewatering with the help of the best and most up-to-date equipment and with the help of the most suitable proposed technology. In addition to the mentioned technologies, ZETA company can determine the most suitable technology required for your wastewater by studying its properties and apply the most appropriate dewatering process based on it.

It is important to note that dewatering is not intended to treat the sludge or liquid; it only separates the solid and liquid components so that it is easier and more cost-effective to handle the separate phases for final disposal. Once the sludge has been dewatered, both the solid and liquid components may contain contaminants that will need to be treated separately.

The purpose of sludge dewatering is for waste minimization and to achieve overall cost efficiency for disposal. Additionally, it can also help with a company’s sustainability objectives. Generally, both the public and private sectors are required to dispose of sludge in a manner that is approved by regulatory agencies and in line with their own organizational requirements and environmentally safe.

Sludge dewatering is typically focused on reducing the weight and volume of the sludge so that disposal costs – including transportation – are kept to a minimum. Water removal is the primary means of volume reduction before sludge waste can be treated or disposed of in the most economical manner.

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