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Hayden Associates functioned as project
managers for the ‘fast track’ construction of the wastewater treatment plant
(WWTP) for the new bottling plant in Znin, Poland. Hayden Associates prepared the initial
design and retained DOR-EKO, a local engineering firm to prepare the civil design and the
environmental permit application. Bids from local contractors were secured for the civil
works, electrical, piping, mechanical and gas-handling. Vendors were selected for
equipment. Design flow was 1,200 m3/day and BOD5 was 1,500 mg/liter influent. The WWTP
consisted of a caustic holding tank, equalization, pH neutralization with CO2, nutrient
addition, anaerobic reaction, biofilter and clarifier with sludge recycled back to the
anaerobic reactor. Hayden Associates served as the
construction manager coordinating the work of six contractors, scheduling equipment
delivery and interfacing with Bovis, the site managers. The construction was completed in
very difficult weather conditions requiring many adjustments to the schedule. A temporary
pumping station with pH control was installed so that preliminary testing of the water
systems and bottlewasher could be conducted. The WWTP was operational five months after
project approval.
The WWTP is automated by PLC with a PC HMI (Human-Machine
Interface) and remote monitoring/control in the QC laboratory. Hayden Associates
supervised the start-up of the plant, trained the operators and prepared the O&M
manual. |