Iasi WWTP, Iasi County, Romania

Project description

Within this contract, our team elaborated full technical proposal for Iasi municipality (Iasi county, Romania) wastewater treatment plant covering preliminary treatment, primary treatment, advanced biological treatment and sludge treatment up to 25% solids content.

The plant was designed for a dry weather maximum daily flowrate of 255.120,0 m3/day serving an equivalent population of 933.333 PE.

The plant’s treatment scheme comprised:

  • wastewater treatment: preliminary treatment (wet weather wastewater overflow, overflowed wastewater pumping and receiving water discharge, screening, influent wastewater pumping, grit and grease removal), primary treatment (primary clarification, overflow), advanced biological treatment (pre-denitrification for biological nitrogen removal, enhanced phosphorus biological removal), chemical phosphorous removal
  • sludge treatment: primary sludge gravity thickening, excess sludge mechanical thickening, thickened sludge anaerobic digestion, biogas cogeneration, digested sludge mechanical dewatering, and dewatered sludge storage

The following disciplines were covered within the proposal:

  • Process
  • Hydraulics
  • Mechanical
  • Structural
  • Architectural
  • Electrical
  • Instrumentation, control and automation (SCADA)
  • Roads, platforms and alleys
  • Landscaping
  • HVAC

Moieciu WWTP, Brasov County, Romania

Project description

Within this contract, our team elaborated the process project for Moieciu city (Brasov county, Romania) wastewater treatment plant covering preliminary treatment, advanced biological treatment and sludge treatment up to 22% solids content.

The plant was designed for a dry weather maximum daily flowrate of 1.126,0 m3/day serving an equivalent population of 5.800 PE.

The plant’s treatment scheme comprised:

  • wastewater treatment: preliminary treatment (influent pumping, screening, grit and grease removal, flow and load equalization), advanced biological treatment with sludge stabilization (pre-denitrification for biological nitrogen removal, enhanced phosphorus biological removal, membrane biological reactors), chemical phosphorous removal
  • sludge treatment: excess sludge aerobic stabilization, stabilized sludge mechanical dewatering, and dewatered sludge storage

The following disciplines were covered within the project:

  • Process, including process control philosophy
  • Hydraulics
  • Mechanical
  • Instrumentation, control and automation

Lunca Calnicului WWTP, Brasov County, Romania

Project description

Within this contract, our team elaborated the process project for Lunca Calnicului village (Brasov county, Romania) wastewater treatment plant covering preliminary treatment, advanced biological treatment and sludge treatment up to 22% solids content.

The plant was designed for a dry weather maximum daily flowrate of 7.762,0 m3/day serving an equivalent population of 28.600 PE.

The plant’s treatment scheme comprised:

  • wastewater treatment: preliminary treatment (screening, grit and grease removal), advanced biological treatment in a BioCoS (Biological Combined System) type system, including nitrification, denitrification and chemical phosphorous removal
  • sludge treatment: excess sludge aerobic stabilization, stabilized sludge mechanical dewatering and dewatered sludge storage

The following disciplines were covered within the project:

  • Process, including process control philosophy
  • Hydraulics
  • Mechanical
  • Instrumentation, control and automation

Alesd WWTP, Bihor County, Romania

Project description

Within this contract, our team provided process design for Alesd city (Bihor county, Romania) wastewater treatment plant covering preliminary treatment, advanced biological treatment and sludge treatment up to 20% solids content.

The plant was designed for a dry weather maximum daily flowrate of 1.987,0 m3/day serving an equivalent population of 14.500 PE.

The plant’s treatment scheme comprised:

  • wastewater treatment: preliminary treatment (screening, screened wastewater pumping, grit and grease removal), advanced biological treatment with sludge stabilization (pre-denitrification for biological nitrogen removal, enhanced phosphorus biological removal), chemical phosphorous removal
  • sludge treatment: excess sludge mechanical thickening, thickened sludge mechanical dewatering, and dewatered sludge storage

The following disciplines were covered within the project:

  • Process

Technical Assistance for Project Management and Supervision of Works: “Rehabilitation and Extension of Water and Wastewater Infrastructure in Dambovita County”

Project description

The project funded under the Environmental Sector Operational Program, Priority Axis 1 (2007-2013), included rehabilitation/extension of the water treatment plants and distribution networks, and wastewater collection and treatment plants.

Our engineers contributed to implementation of distribution networks water loss detection effective management system.

The activities provided within the project included:

  • Short-, medium- and long-term strategy for distribution networks water detection effective management system
  • Theoretical and practical operator personnel training for distribution network water loss zone identification
  • Conception reporting system for the network zones showing the distribution network zones which register the most breakdowns/intervention in time and length

Moroieni-Fieni water main, Dambovita County, Romania

Project description

Within this contract, our team elaborated hydraulic calculations of the water main (GRP, Dn500 mm) between the cities of Moroieni and Fieni (Dambovita County, Romania), including water hammer conditions analysis

The analyzed main pipe (GRP, Dn500 mm) had a total length of about 14,50 km and was analyzed for maximum flowrate of 431,0 L/s.

The following disciplines were covered within the project:

  • Hydraulic calculation notes
  • Water hammer (overpressure) conditions analysis
  • Equipment for water hammer conditions prevention
  • Hydraulic profile
  • Verification per local code requirements

Bucharest WWTP-Stormwater network rehabilitation, Romania

Project description

The investment carried out by the Bucharest Municipality within the investment program Glina wastewater treatment plant-Phase I had the goal to rehabilitate the existing stormwater network within Glina wastewater treatment plant. The applied methods of rehabilitation included two no-dig technologies such as TekFlex (application of a cement-based liner) and Easy Liner a CIPP (Cure-In-Place Pipe) technology.

For each rehabilitated pipe, the activities provided by our teams within the contract included:

  • Working site preparation
  • Pipe isolation from the network and pipe dewatering
  • Pipe cleaning
  • Pipe pre-works video inspection
  • Rehabilitation method application
  • Pipe water tightness test/pressure air test
  • Pipe post-works video inspection
  • Landscape arrangement to the initial condition.

The work quantities per technology type and pipe diameter were:

  • TekFlex: Dn600 mm – 422,0 m; Dn800 mm -226,0m; Dn1000 mm – 445,0m; Dn1200 mm – 305,0 m.
  • Easy Liner: Dn200 mm – 207,0m; Dn300 mm – 681,0m; Dn400 mm – 795,0m; Dn500 mm – 797,0m.

Constanta Nord WWTP, Romania

Project description

Within this contract, our team provided structural, hydraulic, mechanical design for Constanta Nord (Constanta county, Romania) wastewater treatment plant covering preliminary treatment, primary treatment, advanced biological treatment and sludge treatment up to 25% solids content.

The plant serves an equivalent population of  255.000 PE.

The plant’s treatment scheme comprised:

  • wastewater treatment: preliminary treatment (screening, grit and grease removal), primary treatment (primary clarification), advanced biological treatment with sludge stabilization (pre-denitrification for biological nitrogen removal, enhanced phosphorus biological removal), chemical phosphorous removal
  • sludge treatment: primary sludge gravity thickening, excess sludge mechanical thickening, thickened sludge mechanical dewatering, and dewatered sludge storage.

The following disciplines were covered within the project:

  • Structural
  • Hydraulic
  • Mechanical

Targoviste WWTP, Dambovita County, Romania

Project description

Within this contract, our team elaborated full technical proposal for Targoviste Sud (Dambovita county, Romania) wastewater treatment plant covering preliminary treatment, primary treatment, advanced biological treatment and sludge treatment up to 25% solids content.

The plant was designed for a dry weather maximum daily flowrate of 38.386 m3/day serving an equivalent population of 125.800 PE.

The plant’s treatment scheme comprised:

  • wastewater treatment: preliminary treatment (wet weather wastewater overflow, screening, grit and grease removal, septic sludge acceptance station), primary treatment (primary clarifications), advanced biological treatment (simultaneous denitrification for biological nitrogen removal, enhanced phosphorus biological removal), chemical phosphorous removal
  • sludge treatment: primary sludge gravity thickening, excess sludge mechanical thickening, thickened sludge screening, thickened sludge anaerobic digestion, biogas cogeneration, digested sludge mechanical dewatering, and dewatered sludge storage

The following disciplines were covered within the proposal:

  • Process
  • Hydraulics
  • Mechanical
  • Structural
  • Architectural
  • Electrical
  • Instrumentation, control and automation (SCADA)
  • Roads, platforms and alleys
  • Landscaping
  • HVAC

Petrila water distribution network, Hunedoara County, Romania

Project description

Within this contract, our engineers provided hydraulic modelling and dimensioning of the water distribution network for Petrila (Hunedoara county, Romania).

The modelling included the following deliverables:

  • Hydraulic modeling
  • Model description and results
  • Bill of quantities