NOVELTY - A container has two halves (1,2) with two inclined planes (3,10) sloping along opposite directions. The plane (3) is arranged in the lower half (1) with its highest end directly below a main waste material inlet (5), at the top of the container. The plane (10) is secured at transition between the halves with its highest end directly below an additional waste material inlet (11).    USE - For composting night-soil, domestic waste and other degradable material.    ADVANTAGE - The composting unit uses a container of simple construction and high capacity utilization for a given size. By providing two oppositely inclined planes for holding composting material, material broken down in the upper plane drops down to the lower plane and participates in continued break down, resulting in complete composting of waste material. By providing the upper plane extending over two-third of the container length, more composting material can be held in the container and sufficient time period is given for the material to completely degrade. The composting unit allows for easy installation of starting bed and replacement of destroyed compost bed with a new one. The composting unit is capable of handling peak loads.    DETAILED DESCRIPTION - The composting unit consists of a container with two halves (1,2) with two inclined planes sloping in opposite directions. The lower inclined plane (3) is arranged in the lower half (1) with its highest end directly below the main inlet (5) for waste material at the top of the container. The upper inclined plane (10) is secured at the transition between the halves with its highest end directly below an additional inlet (11) for waste material. The upper inclined plane (10) is designed with side edges or is connected to the side walls of the container to prevent material from falling from the sides and ends with a transverse edge (14) with openings for liquid, arranged along its length. The upper inclined plane (10) extends over at least half the length of container preferably over two-third length. A ventilation gap is arranged between the container wall and the highest end edge of the upper inclined plane (11). The container is provided with a screen arrangement (7) and a liquid outlet line at the lower most end of the lower inclined plane. The inclined planes are provided with a starting bed of compost earth containing maggots and bacteria and the waste material is broken down in both planes. After a period of use, composting material drop down from upper plane to the lower one.    DESCRIPTION OF DRAWING(S) - The figure shows the explanatory drawing of composting unit.    Lower and upper halves; (1,2)    Lower inclined plane; (3)    Inlets; (5,11)    Screen arrangement; (7)    Upper inclined plane; (10)    Transverse edge; (14)