The collector has a housing unit arranged in form of a non-depth container (1) and a replaceable waste bag (3) with an outer layer made of water-proof biodegradable polymer material. A hermitically packed additional bag is located inside the waste bag and made of a water soluble material and a water-insoluble hydrogel filler material (4), such that the waste bag is elongated. The housing unit includes a rounded edge (2).
