UK first for innovative Nottingham sewage treatment plant

摘要

The Severn Trent Water (STW) plant treats sewage from a 650,000 population as well as tricky trade waste from a local livestock rendering plant. STW and design- build subcontractor NMCNomenca worked with Dutch company Paques BV to introduce three suitable and complementary technologies to the site in a first for the UK. The combined use of Paques' PHOSPAQTM, BIOPAQ® UASBplus and ANAMMOX® processes has made it possible (1) to effectively remove phosphorus, (2) to recover a phosphate fertiliser, (3) generate biogas and (4) deliver efficient ammonia removal at the site. It has also halved operational costs, made possible a 40% saving on capital expenditure and reduced the plant's physical footprint by three-quarters. The liquor dewatered from the sludge from the municipal sewage treatment is treated using two PHOSPAQTM reactors-the first in the UK - to remove the phosphorus, while the trade wastewateris run through a BIOPAQ® Upflow Anaerobic Sludge Blanket (UASB) reactor to produce biogas.