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Waste Treatment Technologies : Design of a wastewater treatment plant for Anaerobic Digestion systems

Boggelen, C van (2019) Waste Treatment Technologies : Design of a wastewater treatment plant for Anaerobic Digestion systems.

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Abstract:The goal of this research is to investigate the feasibility of installing a wastewater treatment plant (WWTP) at the anaerobic digestion tunnel-installations of Waste Treatment Technologies (WTT), so the water can be discharged to the sewers or surface water. The current situation at all existing installations is that redundant and too polluted wastewater is discharged to existing large WWTP's using 20 m3 trucks for a fixed price per cubic meter. Depending in the size of the installation and the annual water discharge, these costs of transportation/discharging can be as high as €400,000.- per year, directly showing the great opportunity for a WWTP. Usually the water that has to be cleaned exists of two main streams, being leachate from the tunnels and condensate from the piping. The exact volume distribution of the ows is dependent on the installation, but the condensate is way less contaminated compared to the leachate. To fulfill requirements, the leachate could be "diluted" with condensate water, which is especially important to provide sufficient C-source for nitrogen removal. It turns out that for plants with sufficient annual water discharge, e.g. > 5000 m3/a, the installation of a WWTP could definitely be beneficial. In case the volume is lower, one could consider retaining the current discharge method. A basic design for an industrial WWTP has been made in this report, together with an explanation of all components. A rough costs analysis has been made for two specific examples. Ideally a modular design must be made for total discharge volumes between 5000 and 20,000 m3/a, where standard SKID containers are used for the control and machinery, while scalable tanks are used for the actual treatment of the water. A more detailed design must be made with a company which has more experience in the wastewater treatment business, such as Nijhuis Industries or Colubris CleanTech, so WTT could offer WWTP's for future anaerobic digestion installations.
Item Type:Internship Report (Master)
Faculty:ET: Engineering Technology
Programme:Mechanical Engineering MSc (60439)
Keywords:Waste Treatment Technologies, wastewater quality, financial benefit
Link to this item:http://purl.utwente.nl/essays/88694
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