Transcript Слайд 1 - wnp.pl

European Economic Congress
Katowice, 14-16 May
Water supply system and water management
Implementation of advanced technical
solutions of St.Petersburg Vodokanal
in the city
Vladimir Gvozdev
Deputy Head of Water Supply Department, Engineering and Innovation Center
SUE “Vodokanal of St.Petersburg”
Safe water supply as a factor
of favorable living environment
 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.
St.Petersburg Water Supply System
Water Supply Zones of Main Water Treatment Plants
Service area – 1,453.1 km2
Served population – 4.8 mio people.
Zelenogorsk WTP
Specific water consumption
2011– 168 l/day*person
Description of the water supply
system as of 01.01.2012
Main WTP
Kronshtadt WTP
Northern WTP
Volkovskaya WTP
Lomonosov WTP
Southern WTP
Northern water supply zone (589.0 km2)
Southern water supply zone (727.6 km2)
Kolpino WTP
Central water supply zone (136.5 km2)
Dudergofskaya WTP
WTP – water treatment plant
Ø water supply sources:
• the Neva River– 98%
• underground water and
mixed source – 2%
Ø number of water treatment plants – 9
Ø 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.
Water Consumption
by the population of St.Petersburg
260
Удельное
в Санкт-Петербурге,
Specificводопотребление
water consumption
in St.Petersburg,
л/чел*сут
l/person*day
257
235
230
223
l/person
л/чел
220
212
195
189
168
180
165
160
157
150
2012
2013
2014
2015
140
100
1997
2005
2006
2007
2008
2009
2010
2011
Provision of guaranteed safe portable water to the
population of St. Petersburg
- Replacement of
chlorine with
sodium
hypochlorite at
75% of the
facilities
2003
2005
- Implementation of the UV
disinfection at 72% of the
facilities
- Implementation of a system
to ensure water supply
security after detection of
toxic substances
- Optimization of the
water supply network
operation
2006
- 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.
2008
- Complete
elimination of
chlorine
- UV disinfection of
water is 100%
- Replacement of
ammonia with
ammonium sulfate
2009
- 350,000 m3/day
new water treatment
block
2011
- Reconstruction of
500, 800 and 250
thous.m3/day WTPs
2015
The environmental safety of portable water at the WTPs of
St. Petersburg before and after 2003
Zones of possible chemical territory contamination in St.
Petersburg after the chlorine container accident at WTPs as of
2003
1. Transition to water disinfection technologies
with using safe eco-friendly chemicals
Chlorine
Main WTP
(20 t.)
Northern WTP
(25 t.)
Volkovskaya WTP
(10 t.)
Southern WTP
(25 t.)
- Zones of possible
chemical contamination
Sodium
hypochlorite
Kolpino WTP
(20 t.)
2. Introduction of the integrated twostep water disinfection system:
Combination of the chemical (reagents)
and physical (UV) disinfection methods
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
flocculant
ПАУ
PAC
UV-disinfection units as part of two-stage water
supply system
NaClO
(NH4)2SO4
Sedimentation
tanks
The
Neva
river
UV
Clean
water
tank
Mixers
PS-1
filters
UV-disinfection parameters
of St.Petersburg 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
PS-2
UV
Clean
water
tank
ПНС
BPS
Disinfection of water with sodium hypochlorite. Production
of sodium hypochlorite.
Sodium hypochlorite production at
Southern WTP
Year of commissioning – 2006.
Designed capacity of the plant – 720 tons/day.
Overall layout.
Sodium hypochlorite production plant
at Southern WTP.
Sodium hypochlorite production at Northern
WTP
Year of commissioning– 2008.
Designed capacity of the plant– 480 tons/day.
Overall layout.
Sodium hypochlorite production plant
at Northern WTP.
New water treatment block at Southern WTP
(K-6 Block)
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
Reconstruction of Zelenogorsk WTP. Practical implementation of stateof-the-art iron and manganese removal technologies
Water treatment technology at
Zelenogorsk WTP
Kurortny District of
St. Petersburg,
Aerator
Rapid filters
NaOCl
Clean
water
tank
Pumping
station-2
Pressure filters
Intermorainal aquifer
2005 - Completion of the
Zelenogorsk WTP reconstruction
Designed capacity after the
reconstruction – 10,000 m3/day.
Krevox European Environmental Centre:
 Technical solutions
 Equipment supply
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.
Energy efficient production
Southern Water
Supply Zone
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
St. Petersburg
Southern WTP
Uritskaya
Pumping
Station
View of the 3-lift
pumping station after
reconstruction
Dudergofskaya
WTP
Results of the Uritskaya Water Supply Zone Modernization
Project
1. Hydraulic model is built to optimize the operation of water networks
PRESSURE IN THE ZONE BEFORE
RECONSTRUCTION
(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.
Uritskaya
Pumping
Station
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.
Types of training:
 Compulsory training;
 Proficiency maintaining and professional
development of staff;
 Distance programmes.
In January 2011, Vodokanal and Lahti Science
and Business Park established the International
Advanced 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.
.
Customer relations:
 Hot line,
 Portal “Citizens Feedback” on Vodokanal’s
website.
Currently, the Hot Line operators
receive up to 700-800 calls a day!
Awareness-raising activities
of SUE “Vodokanal of St. Petersburg”
Awareness-raising activities
 Youth Environmental Centre
 Museum complex The Universe of Water
THANK YOU FOR YOUR
ATTENTION !