Dalton Wastewater Treatment Plant

Dalton Wastewater Treatment Plant
Location: 
Dalton, Israel
Description: 
Background
In order to comply with new strict regulations, the regional council of Marom Galil required a new tertiary level wastewater treatment plant to treat WW streams from Gush Halav and the industrial zones of Dalton and Marom Galil
 
The challenge 
The temperature in the area is fairly low in winter. This has an effect on the biological process and needed to be considered when calculating flows. The new secondary and tertiary modules were to be combined with existing primary level treatment ponds, but at the same time, prepare for their bypassing if necessary.
BOD concentrations are twice the norm for sanitary WW due to streams from a large egg derivative factory.
Snows in winter rendered the work challenging, but the original  timetables were strictly followed. Furthermore, the plant being situated near the Lebanese border, special protective structures were necessary, as per Home Front Command regulations
 
The Solution
Shtang constructed a complex CSBR wastewater treatment plant that ensured on demand batch treatment with uninterrupted inflow.
Heavy machinery for snow removal and heating was used in order to continue the work throughout winter. Both pre-treatment and primary treatment modules were designed and constructed to permit bypassing of the existing ponds, but also to permit the use thereof to reduce BOD and TSS loads by 50% and to eventually use one anaerobic pond as an equalization tank. An “institutional protected space” was erected, with extra-thick walls and flooring, chemical WC, air filtration systems, biological sealing and more.
 
Capacity
3,600 m3/d (1 MGD) (1st stage)
7,200 m3/d (2 MGD) (2nd stage)
Shtang