kakanj city waste water project

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  1. 1. Rehabilitation of the UrbanWater Supply & Sanitation in Sava River Basin (BMZ ID 2002 65 876) The existing sewer system has the following defects: Low connection rate. In the city centre of Kakanj, the existing sewer system serves only 35 % of the inhabitants, who are connected to the public water supply system of. The other inhabitants discharge the wastewater without authorization on to the land, which has caused severe environmental and public health problems. In the settlement, where a separate sewer system is existent, some house connections have been connected to the storm water pipes instead of to the wastewater pipes. This will cause the pollution of the water body if the wastewater shall be treated in aWWTP in the future. An important drinking water source Pitka Voda, which is situated near the city centre and is recharged with water from the Zgosca river by bank filtration. The nearby discharge of the untreated wastewater into the Zgosca river will cause severe damage to the drinking water supply. Some sewers don not discharge the collected waster water into a receiving water body, e.g. the Zgoa river or Bosna river, but without authorization on to the land, which has caused severe environmental and public health problems. The sewerage collectors in the settlements of Mile and New Bare discharge the wastewater into the nearby creeks, which flows through a valley before it reaches the Bosna river. This caused, the valley is very often flooded by wastewater.
  2. 2. Lot 1: Construction of a separate sewer system in Zone 1 - DN250-400, L=4,623m Lot 2: Construction of a separate sewer system in Zone 2 - DN250, L=1,546m Lot 3: Construction of a separate sewer system in Zone 3 DN250, L=1,098m Lot 4: Rehabilitation of the existing sewer system in Zone 4 - DN1000, L=30m Lot 5: Rehabilitation of the existing sewer system in Zone 5 DN400, L=437m Lot 6: Rehabilitation of the existing sewer system in Zone 6 DN350-400, L=1,150m Designed length in total 8,854m Storm Water Overflows - the construction of three storm water overflow structures shall be also included in the scope of works. Two storm water overflow structures shall be integrated into the existing sewer mains. One storm water overflow structure shall be constructed at the connection of the existing and the new sewer mains. Inspection / Maintenance Shafts - the construction and integration of approximately 298 maintenance shafts (incl. 18 backdrop shafts) into the existing sewer mains shall be included in the scope of works. Bridge Foundation Crossing: the bridge crossing is located at the end of Zone 1. The main collector will run through the foundation of the city bridge. House Connections The Contractor is to provide material and construct approx.294pcs, while as a part of Water Utilitys contribution, Water Utility is to construct approx.293pcs of House Connections from material provided by the Contract Water Utility Kakanj is to be provided with the following mechanization: Hydraulic Excavator, Backhoe Loader & Pick-up vehicle Project Budget 2,000,000.00EUR
  3. 3. PROJECT SIGN BOARD PIPE MATERIAL: CORRUGATED HDPE SN8 PIPES (DN250-1200) PVC SN4 (DN160-200)
  4. 4. SHAFT COVERS, VARIOUS MATERIAL PREFABRICATED MAINTENANCE SHAFTS
  5. 5. PREFABRICATED MAINTENANCE SHAFTS PREFABRICATED COLLECTION SHAFTS
  6. 6. WU PROVIDED UNDER CONTRACT WITH: HYDRAULIC EXCAVATOR NEW HOLLAND BACKHOE LOADER NEW HOLLAND & PICK-UP VEHICLE TOYOTA HILUX 4X4
  7. 7. GEO-TEXTILE PIPE WRAPPING
  8. 8. Bridge Foundation / Pipe Jacking
  9. 9. PIPE-SADDLE CONNECTION OF HOUSE CONNECTION
  10. 10. PREFABRICATED COLLECTION SHAFT IN-SITY DRILLING FOR HOUSE CONNECTION
  11. 11. COLLECTION SHAFT
  12. 12. CASCADE SHAFT
  13. 13. CONCRETE CULVERT INSPECTION SHAFT
  14. 14. STROM WATER OVERFLOW (SWO1) WITH OUTLET STRUCTURE
  15. 15. STORM WATER OVERFLOW WITH OUTLET STRUCTURE
  16. 16. STORM WATER OVERFLOW (SWO3)
  17. 17. STORM WATER OVERFLOW (SWO3)
  18. 18. OUTLET STRUCTURE WITH FLAP VALVE
  19. 19. LAID ALONG THE MAGISTERIAL ROAD RIVER BOSNA OUTLET STRUCTURE
  20. 20. RIVER BOSNA OUTLET STRUCTURE RIVER BOSNA OUTLET STRUCTURE
  21. 21. DOWNSTREAM PIPE CLOGGED BY BALLON UPSTREAM SHAFT FILLED WITH WATER
  22. 22. COLLECTOR FLUSHING CCTV INSPECTION
  23. 23. Zone 1 Take Over Inspection In total installed: HDPE (SN8) DN250 3,801m; HDPE (SN8) DN300 580m; HDPE (SN8) DN350 21m; HDPE (SN8) DN400 16m; Total Collector length 4,418m; Total House Connections 277nr
  24. 24. Zone 2 TakeOver Inspection In total installed: HDPE (SN8) DN250 1,781m; Total House Connections 87nr
  25. 25. CASCADE SHAFT
  26. 26. Zone 3 -Take Over Inspection In total installed: HDPE (SN8) DN250 95.35m Total House Connections 2nr
  27. 27. Zone 4 -TakeOver Inspection In total installed: HDPE (SN8) DN500 80m HDPE (SN8) DN1000 20m Total Collector length 100m;
  28. 28. Zone 5 Take Over Inspection In total installed: HDPE (SN8) DN250 590m HDPE (SN8) DN400 424m Total Collector length 1014m; Total House Connections 51nr
  29. 29. Zone 6 Take Over Inspection In total installed: HDPE (SN8) DN250 340m HDPE (SN8) DN350 200m HDPE (SN8) DN400 935m Total Collector length 1,475m; Total House Connections 73nr
  30. 30. CONNECTION TO EXISTING SYSTEM
  31. 31. MainCity Collector DN1200Take Over Inspection In total installed: HDPE (SN8), DN1200 382m
  32. 32. Remaining Budget Considering the remaining Budget, the following material has been provided for WU Vodokom Kakanj : HDPE (SN8) Pipes: DN250 Pipes 1,000m; DN400 Pipes 250m; PVC (SN4) Pipes DN160 1,500m; DN200 1,500m; Pipe saddles DN250/160 100pcs; Flat Bed Vehicle IVECO In total 265nr maintenance shafts have been installed under the Project, 139nr of House Connection Collection Shafts. Total number of installed House Connections (households connected) to new WW System 496nr.