Abstract
This chapter introduces the concept of infiltration wetlands such as combined wetlands and infiltration ponds, which are cost-effective “end-of-pipe” drainage solutions that can be applied for local source control as part of urban development and regeneration plans. This chapter discusses constraints associated with the planning, design, and operation of these ponds; the influence of aquatic plants on infiltration rates; and the water treatment potential. Storm runoff was first stored and treated in a constructed wetland before it overflowed into parallel infiltration ponds, of which one was planted and the other one was unplanted. Three international sustainable drainage system (SuDS) design guidelines failed in practice. Filamentous green algae within the unplanted pond were blooming in spring and summer, creating an aesthetically unpleasing pond surface area. After 1year of operation, barley straw and Carassius auratus (Common Goldfish) were introduced successfully to control the growth of algae. At the end of this chapter, readers should be familiar with SuDS such as infiltration wetlands and ponds that can be used for groundwater enrichment.
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