Maintenance of <northern second water reproduction center third pump facility ＞
By the sewerage treatment of Yokohama-shi, high processing of facility pushes forward becoming to update of processing equipment for contamination load reduction of discharge water to public waters.
Because the processing time of sewage becomes long, in the high processing, ability is short at existing pond capacity. Therefore we supply the northern part second water reproduction center with altitude processing facility with water with sewage which it cannot process with it is the best water reproduction center, Kanagawa water reproduction center in northern part without enlargement site of facility, and it is planned to process. We call this plan "networking".
By using existing main line where we have already offered open to water supply, can build network by minimum facility maintenance. We are maintaining pump facility to draw sewage supplied with water now in the northern second water reproduction center.
We give high disposal of each water reproduction center to becoming, and networking makes possible update, rebuilding of timeworn facility and, at damages such as earthquakes, makes possible mutual supplement (risk dispersion) of processing function.
Summary of 2 water supply networks
Three effects by networking
(1) Becoming goes ahead through high disposal of northern first, Kanagawa water reproduction center.
In the best Kanagawa water reproduction center in northern part having no to spare of site, it becomes possible to remodel existing standard law facility into high processing facility. By network, we supply the northern second water reproduction center with water and, during remodeling, treat sewage of share of pond which stopped.
We supply the northern part second water reproduction center with water and plan to process the ability deficit that deducted inflow quantity of water and processing capacity of center where becoming completed high processing that increased in the future.
(2) Mutual supplement of the sewerage treatment function at the time of damage is enabled.
When the sewerage treatment function stops at the time of damages such as earthquakes, using network, we supply the northern second water reproduction center with water and by processing in altitude processing facility which can tolerate level 2 earthquake vibration, make possible mutual supplement of function.
(3) Update, rebuilding of timeworn facility is enabled.
Using network, we supply the northern part second water reproduction center with water and, led by the best water reproduction center in northern part where the maintenance generation is old, process sewage of thing that broke down for update, rebuilding of timeworn facility.
Maintenance contents of 3 northern second water reproduction center - third pump facility
(1) Construction name ： The northern second water reproduction center third pump facility construction construction
(2) Facility scale ： 37m in width X 47m in length X 33.5m in depth/12.1m in height 2 stories above the ground and 5 stories underground
(3) Quantity of pumping ： 235,800m3/day
(4) Pump facilities ： Pump format - ritsujikuuzukan comes; all mixed flow pump lift 31m
-2 Φ 600mm *41m3/m, Φ 800mm *82m3/m -1, Φ 1,200mm *164m3/m -1
(5) About other main facilities
Filthy water pump control system -VVVF control
We receive, and strange electric facilities is detailed
Home generation of electricity facilities - gas turbine engine (5000KVA)
Monitoring control system - third pump facility control room + center monitoring control system
(6) The maintenance year ： From 2008 to 2013