The construction of sewerage network in the municipality of Komenda
In the Municipality of Komenda we tend to follow the guidelines for orderly communal area of the entire county. Therefore, we joined the project Extraction and purification of waste water in the area Domžale - Kamnik, which includes investments in sewerage network and an upgrade of the treatment plant Domžale - Kamnik, and is funded by the European Cohesion Fund and Member. Overall objectives that are set to achieve are:
- a construction of suitable infrastructure for the extraction and purification of urban waste water,
- the reduction of emissions to water from municipal sources of pollution,
- the remediation of pollution sources from settlements,
- connecting new 6,586 PE to the sewerage system after the completion of the investment, (2017), of which 6,064 households and 522 PE from the activities,
- to connect the new PE from the area of the Municipality of Cerklje na Gorenjskem to joint central treatment plant Domžale - Kamnik,
- the construction of canals with a total length of 47,167 meters.
In the agglomerations of the municipality of Komenda: Komenda, Nasovče, Klanec, Breg and Poslovna cona Komenda the connection of 2,995 PE (2,473 PE of the population and 522 PE of the activities) additional drainage systems is estimated to be installed onto the Domžale - Kamnik CTP. Until 2017, the agglomeration ID 4079 Komenda there will be a 95.13 % connection rate to the system of extraction and purification.
Within the project a construction of a separate discharge of rainwater and wastewater is being carried out. The project is implemented in settlements Komenda, Moste, Suhadole, Gora, Gmajnica, Podboršt, Mlaka in Žeje. All waste water which is in the area, are being evacuated into the newly designed channels to an existing sewage collector in the municipality Menges. The waste water from areas of settlements Gora, Gmajnica, Podboršt, Mlaka and Komenda are being discharged from the newly designed channel "S" to the existing part of the collector S and continue to the existing main collector PC, which is an integral part of the sewerage system of the municipality of Komenda. In the central part of Moste and all the way to the existing treatment plant (due to its wear and tear it is being phased out) a collector with the estimated secondary channels has already been built. A connection of the main collector ML1 onto the collector S is estimated via an existing channel G. The main and secondary channels of settlements Gora, Mlaka and Podboršt, and secondary channels of the labor settlement Gmajnice will converge into the collector ML1. In the area of the village Gmajnica there is a partially build primary and secondary sewerage for a possibly built connection to the collector 1. The channel S consists also of the collector 1. Designed secondary channels and the main channel K5 collector and two secondary channels will converge into the channel 1. The villages Potok, Klanec, Breg and Nasovče will be mounted on the panels 1, 2 and K5. The same goes for the sewerage network of the Municipality of Cerklje na Gorenjskem, which discharges its waste water at the CTP Domžale - Kamnik.
Municipality of Komenda has made an agreement to consider connecting wastewater through the collectors PC, S, 1, K5 and 2 from the municipality of Cerklje na Gorenjskem of 10,000 PE and, thus, enables the municipality of Cerklje na Gorenjskem to use the treatment plant Domžale - Kamnik. The existing parts of collector PC, S and 1 allow greater dimension for the tube profiles for a separated sewer system, due to the connection line from the municipality of Cerklje na Gorenjskem.
For the connection of the settlements Nasovče, Breg, Potok and Klanec to the scheduled channel Komenda - Moste (collector S) two pool channels are predicted to be built: Collector 1, which runs from the municipal boundary with the municipality of Cerklje to Nasovče, then continues to Breg, Potok and Komenda all the way to the existing TP Komenda, where it connects with the scheduled channel Komenda - Moste (S channel). The second collection channel - Collector 2 - runs from the municipal boundary with the municipality of Cerklje until Klanec and connects to the collector 1 in the village Potok. The Municipality of Komenda alredy took into account the increase of channel profiles in the already existing parts of the collector channel 1, S channel and PC channel.
The primary purpose of the investment is to build a comprehensive system of primary public sewerage network to enable connection to the sewerage facilities in already populated, but not yet channeled areas, and the discharge of wastewater to protect and prevent the pollution of groundwater and surface waters, thus ensuring better conditions of life of the local population.
Upgrade of the Treatment Plant Domžale - Kamnik
The upgrade project of the CTP Domžale - Kamnik includes an upgrade of the CTP Domžale - Kamnik to the tertiary biological treatment with a sequential batch reactor technology - SBR and a construction of the input object with the adoption of the cesspool sludge.
In accordance with the Decree on the emission of substances in waste water discharges from municipal wastewater treatment plants (Official Gazette of RS, Nos. 45/2007, 63/2009, 105/2010), the area of settlement Domžale - Kamnik and the CTP Domžale - Kamnik must provide tertiary treatment until August 22, 2016, which means an additional removal of nitrogen and phosphorus. The cleaning effect of nitrogen and phosphorus compounds from waste water will be unsatisfactory under the new legislation and would - due to surplus of the concentrations - be an excessive burden to the environment.
By upgrading the biological levels of water lines the cleaning effect will be improved and, thus, the quality of the effluent, which will significantly contribute to the reduction of pollution of the river in Kamniška Bistrica will be improved, and be marked with a better ecological status. The CTP will also adopt and clean larger volumes of wastewater when rainfall from the mixed sewerage network. A safe operation within statutory limits and standards will be ensured and the excessive pollution of the environment reduced.
Subject of the project is also to build an entrance building and sludge reception. This will increase operational safety, allow a more efficient elimination of sand and larger particles, arrange adequate hydraulic flow to the CTP, increase the quantities of coarse purification of rainwater and reduce air emissions.
