| Currently, such bill is being prepared. The purpose of the bill will be regulation of the exploitation of the sewage sludge by applying it in the soil in order to exclude the negative effect thereof to the properties of soil, plants, water, human and animal health, and thus to direct the correct exploitation thereof.
Based on such process, the bill will create a framework for regulation of legal relations between the producer of the sludge and the owner of the soil. It shall also cover the requirements of transposition of the Directive of the Council No. 86/278/EEC on protection of the environment and especially soil, provided the sewage sludge are exploited in agriculture.
The basic philosophy of the law is based on the need to ensure environmental safety of application of the sludge in the soil on the basis of protection against chemical contamination, and to demonstrate it through the system of independent evaluation and control of quality of the sludge, quality of soil, the method and volume of the applied sludge, as well as additional limiting factors, with the aim to build and improve the trust in such processes not only in respect of the owners of soil, but also the public consumers.
The basis of the relevant databases is a table of monitored coefficients in producers of the sludge, especially the water and sewage enterprises, and also in industrial waste water treatment stations. The total number of coefficients with identification of the producers is 64.
Additional information are processed in the KALKO 01-08 tables and contain the following data: - 01 - in respect of the water and sewage enterprises, i.e. five enterprises, the following data are given: the number of waste water treatment stations, inlet to the waste water treatment station (m3.year-1), total production of sludge (t.year-1), disposal of sludge in temporary dumping (t.year-1), disposal of sludge in dumping (t.year-1).
- 02 - contains division of the number of the waste water treatment stations according to the EP (equivalent population) in the following variations: up to 50 EP, 500 EP, 5,000 EP, 25,000 EP, 100,000 EP, above 100,000 EP.
- 03 - contains division of the number of the waste water treatment stations according to stabilisation of the sludge: the sludge processed in the central waste water treatment stations, aerobic, anaerobic simultaneous aerobic, cold digestion, slotted tank, digestion tank shut down and unidentified method of sludge stabilisation.
- 04 - contains the number of the waste water treatment stations and the method of drainage of the sludge, i.e. the sludge fields, centrifuge, centrifuge – sludge fields, centrifuge – press, belt press, belt press – centrifuge, unidentified method of drainage of the sludge.
- 05 - contains the number of the waste water treatment stations, from which the sludge is exploited and the manner of exploitation, i.e. for agricultural use, for gardeners, fertilizers, direct application in soil, transfer to a dumping, any other unidentified method of sludge exploitation.
- 06 - in respect of water and sewage enterprises, it contains assessment of the contamination of the sludge according to the standard STN 46 5735, i.e. which of the waste water treatment stations in individual water and sewage enterprises satisfy the standard STN for metals (As, Cd, Cr, Cu, Hg, Mo, Ni, Pb, Zn).
- 07 - in respect of water and sewage enterprises, it contains assessment of the contamination of the sludge according to the Methodology of Direct Application of Stabilised Sewage sludge and Bed Sediments in Soil, and which of the waste water treatment stations in individual water and sewage enterprises satisfy the methodology for the given metal being monitored, namely: As, Cd, Cr, Cu, Hg, Mo, Ni, Pb, Se, Zn.
- 08 - in respect of water and sewage enterprises, it contains assessment of the contamination of the sludge according to the Methodology of Direct Application of of Stabilised Sewage sludge and Bed Sediments in Soil, and which of the waste water treatment stations in individual water and sewage enterprises satisfy the methodology for the given parameter: TEN, NEL, PAU, PCB, AOX, FKB, EK.
The current data from the databases are provided solely via the manager, being the Research Institute of Water Management, Bratislava
Information & Contact: Research Institute of Water Management
Vyskumny ustav vodneho hospodarstva,
Nabr. arm. gen. L. Svobodu 5,
811 02 Bratislava
tel.: 00421 (2)59343111,
fax: 00421 (2) 54415743
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