Challenge

Ightham Mote is a moated medieval manor house dating from the early 14th century. Since undergoing renovations in 2005, the site incorporates a restaurant and cafe, which is used to hold functions as well as to receive daily visitors.

Ightham Mote has 20 staff, 26 residents, and attracts an average of 500 visitors per day. The client requested a decentralised system because of the distance between the site and the mains sewer and the absence of gravity flow. The effluent would need to be pumped, which would mean an ongoing cost above the utility bill.

The discharge consent was 10:10:1 into a local stream and 20:15:5 out of the ECO-SAF system.

Solution

The project scope was to supply a complete biological treatment system, manufactured in stainless steel. The system included a primary settlement module with balance capacity, a dual stream ECO-SAF module, and an upward flow clarifier, which fed into a constructed wetland before discharge.

The plant was designed for 400pe, based on 200litre/person/day and 60g BOD/person/day. It was fitted flush with ground level because the site was overlooked by cottages and needed to be visually discreet