Work on the Taboada treatment plant progressing at a steady pace
The giant screen filters to be used in the Taboada waste water treatment plant (WWTP) have arrived at Lima. The 3000 mm-diameter screen filters, ordered by TEDAGUA from the German company HUBER, are the biggest in the world and will cover the waste water treatment demands of the city of Lima. The plant will include 22 of these giant filters. The first 12 are already in Lima and will be installed this month. The remaining 10 will arrive in March of this year.
The high-density polyethylene outfall pipeline is almost 4 kilometres long (500 m on land and 3,500 m underwater) and 3.0 metres in diameter. The sections are being manufactured in Vitoria (Spain) by PPA & KRAH S.A. and TEDAGUA has also contracted that company’s Peruvian subsidiary to carry out the installation. So far, 1,307 metres have arrived at the worksite and are ready for implementation of the first marine section scheduled for June this year.
TEDAGUA would like to thank its suppliers Huber, Ppa & Krah, Coutex for providing the gates, Xylem (formerly ITT) as supplier of the hydraulic pumps and pressure equipment and all involved in the works for their effort and high quality performance in bringing the project to a successful conclusion.
The Taboada WWTP will have a treatment capacity of 14 m3/s (1,210,000 m3/day) with peaks of 20 m3/s which will account for 72% of the waste water from Lima and Callao, servicing a population of 4,100,000 people. The plant’s treatment process consists of an integrated system that removes all sedimentable solids, discharging only colloidal and water-solluble substances easily assimilated by the marine environment.
Calculations for definition of the outfall discharge zone were based on the study of the marine currents in the final kilometre of the underwater section, which is equipped with 250 diffusers. This will allow the sea to assimilate the flow in approximately three hours, in compliance with the environmental quality standards established by the National Water Authority (ANA) at monitoring points close to the coast.