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Shtang constructed a wastewater treatment plant using the SBR technology, with gravitational tertiary treatment and aerobic sludge digestion. The project was a DBOT, in which the company undertook the financing, design and construction, as well as operation and maintenance for a period of 25 years.
The works included a pre-treatment system, biological treatment systems, clarification, gravitational tertiary filtration and sludge treatment.
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