Miljøprojekt, 999 – Udarbejdelse af praktiske retningslinier for forebyggelse af forurening af små vandforsyninger i forbindelse med håndtering af pesticider i landbruget

Udarbejdelse af praktiske retningslinier for forebyggelse af forurening af små vandforsyninger i forbindelse med håndtering af pesticider i landbruget

Figure 1. Drawing of the frame of a closed concrete biobed. A. Cross section, B. Measures from top. The frame is made from casted walls. A casted beam carries the driving ramp for the tractor and sprayer. Inner dimensions of the biobed is 4 x 3.76 meters. The total depth is 80 cm. The bottom of the bed is closed by concrete. To collect surplus of water from the biobed, a drain is installed in the bottom of the biobed laying in a layer of 15 cm sand. See figure 4. This drain is connected to a reservoir with i.d. of 150 cm and a depth of 180 cm. Inside this reservoir is a 100 L container for sampling of minor amounts of percolate. To sample and to empty the two reservoirs, pumps are installed in the bottom of each.

Bjælke: Beam, Kørerist: driving ramp