Leachate purification on a nature-friendly way

It is specified in the executive decree No. 246/2014 (IX.29.) how the leachate of wasteyards should be handled on a proper way. The problem with the leachate of communal-waste yards is that either the limits as determined in the decree No.28/2004 (XII.25. KvVm) can not be kept or no appropriate living waters are around or it is quite difficult to build a drainage system. 
 
CsurgalekTo our estimation, this problem can be best solved in two steps by a combined nature-friendly technology. After an optional pre-handling in a pond, in the first step the leachate is cleaned in a basin lined with foil and planted with marsh-plants. In this phase the plants and the micro-organisms on their surface clean the water. In order to control the charging of material the swampy basins can be connected with each other on a parallel way or in-line. Through the slow-flow in the basins the water is held in for a time. Then, in the second step the cleaned leachate is dried up in a plantation of poplar and willow that is specially created for this purpose and consumes much water and nutriment. The plantation is continually watered on an energy-saving way, through gravity. The amount of water for irrigation is determined according to the physical, chemical and water-balance properties of the soil taking also into consideration the yearly amount of rainfall and the water demand of the plants. The excess water is collected in belt trenches around the plantation. There are observation wells in the area to monitor the changes in ground water.
 
This technology provides for the purification and disposal of leachate on a nature-friendly way while creating secondary raw material at the same time; and all these at the communal-waste yard. The method of realization does not need any costly investment and it can be easily adapted to the local facilities. It is a closed, stable ecological system that can be operated at low costs and does not need any special knowledge. It is not energy-intensive and it neither causes any environmental pollution. The biomass of the energy-plant can be utilized through refuse fuel production.