A Technology Portfolio of Nature Based Solutions by Sean O'Hogain & Liam McCarton

Author:Sean O'Hogain & Liam McCarton
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

During feeding periods, the sludge layer height increases at a rate of around 10 cm/year. When the layer approaches the top of the banks or walls surrounding the STW (usually after 8–12 years), feeding is stopped. The sludge remains in the beds for a final resting period (from 1–2 months to 1 year), aimed at improving sludge dryness, mineralisation and dewatering. This resting period improves the sludge dryness and mineralisation. The final product is subsequently withdrawn Fig. 3.16. Biosolids obtained from the treatment are suitable for agricultural uses. Figure 3.17 shows the influent loading system.

Fig. 3.17Influent pumped onto wetland system

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