BALASHA-JALON Infrastructure Systems LTD. (BJIS)

                           בלשה-ילון מערכות תשתית בע"מ                                                                                                                                    

BALASHA-JALON Infrastructure Systems LTD. (BJIS)

  בלשה-ילון מערכות תשתית בע"מ

General Background


This W.W.T.P serves 8 municipalities having population of 175,000.


The plant is presently constructed under a B.O.T contract.


BJIS prepared the general and detailed design including process civil, mechanical, electrical and control engineering.


BJIS provides general supervision of construction.


Basic Design Facts:


  • Average Design Flow (m3/day): 28,200
  • Average B.O.D. Load (Kg/day): 13,000
  • Effluent Quality (BOD/TSS/N): 15/15/10





 Liquid Process and Facilities


Main Process:


B. N. R. Activated Sludge.




  • Bar screens
  • Grit removal
  • Primary clarifiers
  • B.N.R. Activated sludge reactors  with diffused aeration system
  • Final clarifiers
  • Effluent filtration and disinfection. Effluent will be used for unrestricted agriculture use.








 Sludge Process and Facilities


Main Process:


Aerobic Stabilization





  • 2 Drums for W.A.S thickening
  • 2 anaerobic digesters, 1,700 m3 each for the stabilization of the thickened W.A.S. and the primary sludge. Digesters are mixed by the unique "Rotamix" system
  • 2 Decanter centrifuges for the dewatering of the digested sludge
  • Co-generation system for the utilization of the bio-gas including co-generation unit having 500kW electric capacity




Akko WWTP - Israel