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In 2016, the Company began the first stage of revamping the biological treatment plants - modernization of the mechanical domestic wastewater purification unit. The following sections have been installed: the new domestic wastewater receiving chamber; the bar screen building; the modern aerated sand traps; the mixer of domestic and chemical drains; the pump house for discharging the mixers, the electric cable racks; the vapor-gas mixture neutralization units have been installed from the bar screen buildings, sand traps and mixers (Yatagan). The capital costs amounted to 518.57 million rubles.
The work, that was started in 2017, has been resumed in 2018 on the second stage of revamping the biological treatment plants, that is associated with modernization of the mechanical chemically contaminated plumbing purification unit. All types of surveys have been carried out, and the design and detailed documentation has been developed. As of today, the construction of storm water lines from the pump station has been completed at the construction site, networks of underground utility systems have been laid, and the polymer crumb collection basin has been installed. Installation of gas cleaning units is in progress - bioreactors for cleaning the non-condensable substances. Implementation of the second stage of revamping will prevent the release of odors into the atmosphere and protect the biological treatment unit from the negative effects of volley and toxic effluents, and this will improve the quality of wastewater treatment. Completion of the revamping is scheduled for 2019. The result of the work in progress and already completed work was a significant decrease of the concentration of the following substances in the treated effluent: iron (by 19%), aluminum (by 16%), sulfates (by 17%), phenols (by 35%), formaldehyde (by 52%) and methanol (by 71%).
In 2018, the Company began the work related to construction of the new off-site sewer for industrial and storm water of 15 km long. Completion of Its construction is scheduled for September 2019. After commissioning of this sewer, the throughput capacity and reliability of the system for transporting wastewater to the treatment facilities will be increased. Within the scope of the second stage it is also planned to reconstruct the chemical laboratory of the biological treatment plants inclusive of its re-equipment. Besides, a video wall will be fixed here that will display analytical monitoring of stocks in real time. Also, a video pane will appear here, which will display analytical monitoring of wastes in real time. Another acquisition of Nizhnekamskneftekhim is the mobile ecological post. The special vehicle “Laboratory” will allow to obtain without delay the readings of the full ecological slice of the atmospheric air for the main pollutants in any geographic point of Nizhnekamsk Municipal District.