Implementation of advanced technical solutions of St.Petersburg Vodokanal in the city
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Transcript of Implementation of advanced technical solutions of St.Petersburg Vodokanal in the city
Implementation of advanced technical Implementation of advanced technical solutions of St.Petersburg Vodokanal solutions of St.Petersburg Vodokanal
in the cityin the city
Vladimir GvozdevDeputy Head of Water Supply Department, Engineering and Innovation Center
SUE “Vodokanal of St.Petersburg”
European Economic CongressKatowice, 14-16 May
Water supply system and water management
safe portable water in terms of epidemiology and radiology;
minimal environmental impact thanks to the use of environmentally safe chemicals and technologies;
responsibility before customers at present and in future through solicitous attitude to the natural resources;
energy-efficient processes;
well-qualified personnel guarantying accident-free, effective operation;
interaction with customers and awareness-raising work.
Safe water supply as a factor of favorable living environment
St.Petersburg Water Supply System Water Supply Zones of Main Water Treatment Plants
Kolpino WTP
Kronshtadt WTP
Zelenogorsk WTP
Lomonosov WTP
Northern water supply zone (589.0 km2)
Southern water supply zone (727.6 km2)
Central water supply zone (136.5 km2)
Main WTP
Northern WTP
Volkovskaya WTP
Southern WTP
WTP – water treatment plant
Dudergofskaya WTP
Description of the water supply system as of 01.01.2012
Ø water supply sources:• the Neva River– 98%• underground water and mixed source – 2%
Ø number of water treatment plants – 9Ø number of boosting pumping stations – 200
Ø length of water networks– 6 665 km
Ø daily average water supply from WTPs – 1,922.900 m3/day.
Service area – 1,453.1 km2 Served population – 4.8 mio people.
Specific water consumption 2011– 168 l/day*person
Water Consumption by the population of St.Petersburg
257
235 230 223212
195 189168 165 160 157 150
100
140
180
220
260
1997 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
л/че
л
Удельное водопотребление в Санкт-Петербурге, л/чел*сут
Specific water consumption in St.Petersburg, l/person*day
Provision of guaranteed safe portable water to the population of St. Petersburg
- An effective water disinfection system is absent, - 78% of water is treated in a single stage process,- Environmentally hazardous chemicals (chlorine, ammonia) are applied,- Water treatment technology from specific contaminants is absent.
- Replacement of chlorine with
sodium hypochlorite at
75% of the facilities
2015
- Implementation of the UV disinfection at 72% of the
facilities- Implementation of a system
to ensure water supply security after detection of
toxic substances
20092008200620052003 2011
Increase in the percentage of water samples
meeting the standards at WTP outlets
- Reconstruction of 500, 800 and 250
thous.m3/day WTPs- Complete
elimination of chlorine
- UV disinfection of water is 100%
- Replacement of ammonia with
ammonium sulfate
- 350,000 m3/day new water treatment
block- Optimization of the water supply network
operation
- Zones of possible chemical contamination
Main WTP(20 t.)
Volkovskaya WTP(10 t.)
Southern WTP(25 t.)
Northern WTP(25 t.)
Kolpino WTP(20 t.)
2. Introduction of the integrated two-step water disinfection system:
Combination of the chemical (reagents) and physical (UV)
disinfection methods
1. Transition to water disinfection technologies with using safe eco-friendly chemicals
Chlorine
Sodium hypochlorite
Zones of possible chemical territory contamination in St. Petersburg after the chlorine container accident at WTPs as of
2003
The environmental safety of portable water at the WTPs of St. Petersburg before and after 2003
UV system Guarantee of the epidemiological water safety; “Closer to consumer” principle; Full automation of disinfection processes; The largest in Russia; Home-grown technology.
UV-disinfection of portable water
UV-disinfection units as part of two-stage water supply system
UV units
characteristics
Description
Maximum capacity 5.5 mio. m3/day
Location Before water enters the distribution system – closer to customers
UV equipment type High performance amalgam lamps
Sphere of application Water disinfection together with chemical water treatment
Commissioning 2004-2008
UV-disinfection parameters of St.Petersburg water supply system
ПНС
ПАУNaClO
(NH4)2SO4
flocculant
The Neva river
Mixers
Sedimentation tanks
filters
Clean water tank
Clean water tank
UVUV
PS-2PS-1 BPS
PAC
Disinfection of water with sodium hypochlorite. Production of sodium hypochlorite.
Overall layout.Sodium hypochlorite production plant
at Southern WTP. Overall layout.
Sodium hypochlorite production plant at Northern WTP.
Sodium hypochlorite production at Southern WTP
Sodium hypochlorite production at Northern WTP
Year of commissioning– 2008.Designed capacity of the plant– 480 tons/day.
Year of commissioning – 2006.Designed capacity of the plant – 720 tons/day.
The capacity of New K-6 Block is 350,000 m3/day
Technologies: Pre-ozonation Coagulation Sedimentation Filtration Two-stage disinfection (sodium hypochlorite with ammonium sulfate and ultraviolet)
Facilities: Ozonation chamber Mixing chamber Lamellas Dual media filters Clean water reservoirs
New water treatment block at Southern WTP (K-6 Block)
Reconstruction of Zelenogorsk WTP. Practical implementation of state-of-the-art iron and manganese removal technologies
At Zelenogorsk WTP :
• filters are reloaded and the new drainage system TRITON is installed,• the water aeration system is upgraded,• the new iron and manganese removal technology is implemented at the 2nd process stage with using catalytic oxidation of iron and manganese compounds in pressure filters,• modern chemical dosing systems and the process monitoring equipment are installed, technical processes at the plant are automated,• water is disinfected by sodium hypochlorite.
Water treatment technology at Zelenogorsk WTP
NaOClAerator Rapid filters Pumping
station-2Pressure filters
Kurortny District of St. Petersburg,
Intermorainal aquifer
Krevox European Environmental Centre: Technical solutions Equipment supply
2005 - Completion of the Zelenogorsk WTP reconstructionDesigned capacity after the reconstruction – 10,000 m3/day.
Clean water tank
Uritskaya Pumping Station
Southern WTP
Dudergofskaya WTP
St. PetersburgSouthern Water Supply Zone
Energy efficient production
1. Hydraulic model is built to optimize the operation of water networks (prevention of excess pressure, improved velocities);
2. The pumping stations, equipment and valves are modernized;
3. Automated control of PS operation and the pilot;
4. Water quality monitoring system is implemented at water networks.
Results of the Uritskaya Water Supply Zone Modernization Project
Characteristics of Uritskaya PS water supply zone Pumping station capacity – 60,000 m3/day Length of network – 170 km Number of customers – 1078 No. of stories in the serviced buildings – 1-16 No. of high-pressure boosting stations – 11 No. of house connections – 1033 No. of valves – 824 No. of fire hydrants – 498
View of the 3-lift pumping station after reconstruction
PRESSURE IN THE ZONE BEFORE PRESSURE IN THE ZONE BEFORE RECONSTRUCTIONRECONSTRUCTION
Uritskaya Pumping Station
Types of training: Compulsory training; Proficiency maintaining and professional development of staff; Distance programmes.
Training and professional development of Vodokanal personnel
Vodokanal’s Training Centre: Training and professional development of the company personnel; Training of specialists (Professional College No. 89); Contests of workmanship.
In January 2011, Vodokanal and Lahti Science In January 2011, Vodokanal and Lahti Science and Business Park established the International and Business Park established the International
Advanced Water Technologies CentreAdvanced Water Technologies Centre! !
Vodokanal’s information policy and customer relations
Vodokanal’s information policy is based on: Transparency of the company activities, Access to reliable information about the company history and operations, Interaction with the mass media, educational institutions, and public and environmental organizations. .
Currently, the Hot Line operators Currently, the Hot Line operators receive up to 700-800 calls a day!receive up to 700-800 calls a day!
Customer relations: Hot line, Portal “Citizens Feedback” on Vodokanal’s website.
Awareness-raising activities Youth Environmental Centre
Museum complex The Universe of Water
Awareness-raising activitiesof SUE “Vodokanal of St. Petersburg”
THANK YOU FOR YOUR ATTENTION !