Tag:sludge treatment

№11|2015

INNOVATIVE TECHNOLOGIES

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UDC 628.16:62-278

Kuznetsov V. N.

Return of filter washings and sludge treatment  at the Western Filtration Plant of Ekaterinburg

Summary

In order to abandon discharging polluted filter washings into the water source a system of filter washings treatment in ultrafiltration membranes for reusing was developed alongside with a unit for the treatment of sludge generated at the filtration facilities. The method of ultrafiltration is at the heart of the filter washings treatment technology. Filter washings from the main process line are filtered through special membranes that provide for the separation into clean water (permeate) and concentrate (sludge). The sludge from horizontal clarifiers of the main process line and the sludge from the ultrafiltration unit are removed to the sludge treatment facilities. Precipitated sludge with a moisture content of 98.5% is removed by the scraper system into the sump whereof it is transported further to the belt thickener and then into the chamber filter press. Dewatered sludge with a moisture content of 75% is transported by trucks to the solid waste landfills. The implementation of these innovations provided for the significant reduction of water amount used for own needs; thus, the total water losses do not exceed 1.5%; water abstraction from the water source was also reduced as well as the water supply deficit. The results of the first several months of the ultrafiltration facilities operation showed that the quality of the treated drinking water met the requirements of the sanitary regulation and standards.

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№10|2018

ENVIRONMENTAL PROTECTION

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UDC 628.1/3

Danilov A. N., KINEBAS A. K., Rublevskaya O. N., Gvozdev V. A.

Development of water supply and wastewater disposal technologies to supply Saint-Petersburg with clean water and protect the environment of the Baltic Sea Region

Summary

The description of process solutions applied by SUE «Vodokanal of St. Petersburg» for the development of the water supply and wastewater disposal systems in the XXI century is presented. Advanced technologies are the tools for achieving the core targets of the enterprise – delivering high-quality water supply and wastewater disposal services that will provide for the good living standards for the citizens, sustainable development of the metropolis, development of the water use culture and conservation of the Baltic Sea Marine. The information of the measures that provided for reducing the water consumption, improving the safety and reliability of the water supply of Saint-Petersburg is stated. The measures are highlighted that provided for the purification of 98.6% wastewater amount, allowed to introduce the technology of nutrients removal from wastewater at all the treatment facilities, to solve the problem of sludge utilization. The innovative technologies used in the construction and upgrade of sewers and networks are described. The information on the advanced solutions of snow utilization in the city is presented. The advanced technical solutions, materials and equipment applied at the facilities operated by SUE «Vodokanal of St. Petersburg» are the output of the continuous cooperation of the enterprise with domestic manufacturers, scientific and educational institutions, exchange of experience with the Russian and foreign water utilities.

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Российская ассоциация водоснабжения и водоотведения

Конференция итог

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