Wasterwater Treatment


  • Municipal wastewater treatment
  • Industrial wastewater treatment
  • Sewage sludge treatment, disposal and reutilisation
  • Landfill leachate treatment
  • Innovative wastewater treatment technologies, e.g. membrane technologies
  • Near-to-nature wastewater treatment technologies, e.g. wastewater pond systems
  • Wastewater recycling, e. g. for irrigation or raw water augmentation
  • Wastewater disinfection, e. g. solar or UV-technologies

Project Examples


Area for the WWTP in HCMC Central Ho Chi Minh City WWTP (Vietnam)
  • Client: People's Commitee of HCMC
  • Duration: 01/2014 - 06/2015
  • Central Ho Chi Minh City to tender Construction and Operations for a new 820 tm³/d WWTP (Vietnam)
  • Service provided: Review of Feasibility Study and Site Conditions, Field Investigations (topographical and geotechnical), Reference Design and Cost Estimates, Provide Prequalification and Bidding Documents, Guide Prequalification and Bidding Process, Supporting Activities in Capacity Development
Project Example UJAMS UJAMS Industrial Effluent Water Reuse
  • Client: City of Windhoek
  • Duration: 8/2008 - ongoing
  • Prof. Dr. Dr. K.-U. Rudolph GmbH, as member of an international consortium, was responsible for advising the client with the final design of the PSP concept (including a financial feasibility analysis of different technological solutions), design of the BOX-contract and managing the tender process.
  • Service provided: Financial feasibility analysis & tariff modelling; Advice on various PSP options; Design of PSP concept; Tender documentation and procurement; Overall technical-financial project optimisation
Project Example Construction of STP in IZ in Yen Phong Construction of an industrial STP in the industrial zone in Yen Phong (Vietnam)
  • Client: Company in the industrial zone Yen Phong
  • Duration: 2009 - 2012
  • Construction of an industrial STP for highly loaded wastewaters (50,000 mg COD/l; 1,000 m³/d; wastewater temperature 30 - 70 °C)
  • Service provided: Pre-feasibility study and planning of the integration of the wastewater system into the process including biogas utilisation; EPC contract including base design, process and detail engineering for the WWTP with UASB reactor, air stripper, trickling filter, sludge utilisation, advanced post-treatment and pond system; procurement of equipment delivered by German manufacturers; support for operational start-up including training workshops
Project Example Industrial STP Bitterfeld-Wolfen Extension of industrial STP in Bitterfeld-Wolfen by anaerobic pre-treatment and biogas production
  • Client: GKW Bitterfeld-Wolfen GmbH
  • Duration: 2007 - 2010
  • Construction of an anaerobic pre-treatment unit and a biogas plant for highly loaded industrial wastewaters (load 40,000 kg CSB/d) consisting of 2 reactors for a treatment capacity of 24,000 kg CSB/d; invest costs incl. biogas processing 12.9 Mio. EUR
  • Service provided: Economic study and pre-tests for the assessment of the most suitable treatment method; complete engineering services incl. planning, compilation of approval documents, tendering, construction site supervision and consulting for operational start-up
Project Example Industrial STP Lam Thao Construction of Industrial STP in Lam Thao (Vietnam)
  • Client: Lam Thao Chemical Factory
  • Duration: 2006 - 2007
  • 2,500 m³/h
  • Technical advice regarding the construction of a new industrial sewage treatment plant, basing on some existing facilities, for wastewater purification and cooling water recycling; biological and chemical process technologies, combined wastewater pond
  • Services provided: Technical advice regarding design, construction and cost optimisation
Project Example STP Managua Construction of the STP in Managua (Nicaragua)
  • Client: KfW Development Bank
  • Duration: 2002 - 2006
  • New construction of a sewage treatment plant in Managua with a capacity of 780,000 p.e. resp. 157,000m³/d
  • Services provided: Base and detail design, tender and procurement following FIDIC, design of a DBO-model to include optimisation design and plant operations by the construction/operation company
  • Partner: RRI Beller Consult, plus local engineering consultants
Project Example Central STP Habichtswald Construction of Central STP in Habichtswald (Germany)
  • Client: Municipality of Habichtswald, Hessen
  • Duration: 1997 - 2005 plus after sales services
  • New construction of the STP Habichtswald (6,500 p.e.) including sludge drying and stabilisation fields, storm water overflow tanks (550 m³) as well as re-construction of old plants in abandoned locations; additional installation of a chemical dosing facility for sludge precipitation and enhanced phosphate removal
  • Services provided: Turn-key tender procurement organisation, construction supervision, project controlling, Client's support for exceeding a public permission from responsible authorities, including acquisition and documentation regarding public funds, operational assistance during the first years
Project Example STP Zell at the Lake Side Modernisation and extension of the STP in Zell at the Lake Side (Austria)
  • Client: Reinhalteverband Zellerbecken
  • Duration: 1998 - 2002, after sales services until 2007
  • Extension and modernisation of the municipal wastewater treatment plant (70,000 p.e.) using process technology of activated sludge with novel lamella separators in the activated sludge tanks
  • Services provided: Optimisation base design, structuring of a tender and procurement organisation for a BOT-model (the second in Austria; the first pilot BOT was also consulted through CEEM), consulting during operational set-up, base design and turn-key tender, procurement, construction supervision and operational assistance for operational start-up plus general management/finance consultancy