MNV Zrt. intends to solve the remediation tasks of the mud cartridges of the Berhida Industrial Area as part of the KEHOP 3.3.0 construction. During the preparatory activities, the applicant obtained the necessary authorisations and consents. The aim of the project is to carry out remediation works, to eliminate the polluting sources and to clean up the contaminated soil in the area of the former Peremarton Chemical Company. As a result of the project, the risk to the environment and human health caused by pollution is reduced. Decisions No 24066/12 and No 84880/12 of the KDT KTVF ordered detailed fact-findings for areas 06/167, 06/173, 06/174, 06/181 and 06/199 of Berhida, belonging to the former Peremarton Chemical Company. The primary source of pollution detected in the test area is sludge in the earth basins. The storage facilities mainly include sludges from the sedimentation of the water generated by the technology, calcium fluoride sludge in T1, calcareous sludge in T2-T4 and T6-T7 and sewage sludge from sedimentators. The T6 container was emptied about 20 years ago and its material was placed on T7. The basic objective of the project proposal is to reduce the risks caused by sludge storage facilities without technical protection in the area to a verifiable acceptable level and to eliminate the state of danger to the environment by carrying out environmental remediation interventions. The intervention essentially requires the implementation of two waste management activities. By fixing the hazardous components of the reservoir T1 it is possible to eliminate the hazardous character of the waste contained in the reservoir T1. Once hazardous properties have been removed, the treatment of the T1 cassette waste can be achieved by establishing a high level of technical protection on the ground. Waste from reservoirs T2-3, 4 and 7 must be removed from its current location due to water-base protection requirements in the affected intervention area. The method of disposal of the contents of the reservoir T1 was determined on the basis of two principles of Act CLXXXV of 2012 on waste. By protecting 15 481 solid m³ sludge in storage facility T1 by means of on-site technical solutions, not only does the environmental risk associated with the hazardous character of the waste decrease, but also the occupied area is halved. With the intervention — the waste remains the same topographical number, — the solution ensuring the best overall environmental result, — the stabilisation of the waste for the purpose of remediation is carried out within and next to the construction of the technical installation, — the stabilisation prevents the release of hazardous fluorine into the environment, — the waste is placed under controlled conditions — it remains inspected and controlled in the area — other waste is not shipped from an external site, — therefore no waste disposal facility can be considered. The disposal of sludge waste can be achieved by stabilising fluoride (Na2SiF6, malladrit) at present. During stabilisation, sludge waste is mechanically and chemically stable when mixed with a frame forming agent. Stabilisation is reinforced by new technical protection to be developed. Reservoirs T2-3, 4 and 7: Due to the provisions of legislation on the protection of drinking water bases, there is no alternative to the technology of remediation of soils contaminated to the extent that they are to be exempted or the disposal of industrial waste (sludges) by extraction and removal. Accordingly, as part of the intervention, the dismantling of reservoirs T2-3, 4 and 7 and the disposal of sludge waste stored in them may be carried out by means of a workflow of the area of extraction — transport — reception. Reception means, in particular, the possibility of landfilling and recovery.
