Maribor Wastewater Treatment Works,
Slovenia Mott MacDonald has extensive worldwide
experience in undertaking the design or auditing designs by others
of municipal wastewater treatment facilities. Our inputs range from
undertaking feasibility studies, to preliminary design through to
detailed design work. They cover new builds on greenfield sites and
the replacement or upgrading of existing works. We have made
significant inputs into PFI and PPP schemes undertaken in the UK
and overseas. We also provide designs for industrial effluent
plant. Increasingly we are also being asked to consider options for
effluent re-use.
Our designs incorporate all the conventional treatment stages, such
as preliminary, primary, secondary and tertiary treatment as well
as addressing environmental issues such as odour minimisation,
containment and abatement. Treatment processes are selected
appropriate to the treatment required and to the site
circumstances. Where required compact processes or processes
producing high quality treated effluents are used, e.g. lamellar
separators and BAFF plant, Sequencing Batch Reactors (SBRs) or
Membrane Bioreactors (MBRs). The use of such processes has grown
rapidly over the past ten years.
Projects are considered on a case-by-case basis to provide
solutions that are consistent with available
Pilot plant testing of wastewater from He Xi,
Taiyuan, Chinaresources and effluent discharge requirements.
They may involve an optioneering exercise to determine the most
appropriate and cost-effective solution. The Mott MacDonald
approach to wastewater problems makes a feature of understanding
the mechanisms affecting the process before making recommendations.
This may involve carrying out treatability trials to assess the
characteristics of a specific waste, to determine whether a
conventional solution is appropriate.
As a result of the Mott MacDonald approach, we have increasingly
been asked to apply advanced treatment techniques and innovative
design approaches for specific reasons. Typical projects include:
- Maribor Wastewater Treatment Works, Slovenia. One of the
largest environmental projects, including nutrient removal,
undertaken in Slovenia in the past few decades. Mott MacDonald, the
lender’s engineer, provided review and advisory services throughout
the design, construction and commissioning. We were pro-active in
ensuring that the advanced technology of the wastewater treatment
plant matched the needs of the people and the environment of
Maribor with its sensitive river system.
- BMA4 wastewater treatment works, Bangkok, Thailand. We provided
design and procurement advice and reviewed the process, civil and
M&E designs for the client. The multi-storey wastewater
treatment plant serves the Chatuchak District and parts of Phraya
Thai, Huay Kwang and Din Dang Districts of Bangkok, and uses the
SBR activated sludge process to provide nutrient removal. The works
also incorporate anaerobic digestion of the sludge and odour
control facilities.
- Brighton & Hove WwTW, Southern Water. The detailed design
prepared to accompany the planning application provides compact
treatment for wastewater and sludge treatment at a restricted
coastal site.
- Carrigrenan WwTP, Cork. Specialist wastewater treatment
services were provided for the procurement of this wastewater
treatment plant via a “design, build and operate” contract. The
plant comprised preliminary and primary treatments with secondary
treatment by sequencing batch reactors (SBRs), and anaerobic
digestion of sludge followed by thermal drying. We prepared process
specifications for the tender documents, including performance
testing and guarantees. Further inputs continued through tender
evaluation with process advice provided during detail design,
construction, testing and commissioning phases.
- Nutrient Removal Pilot Plant for Yorkshire Water. The pilot
plant was designed and constructed to permit the client to
investigate various nutrient removal configurations of the
activated sludge process and their application at a number of
different sites within Yorkshire Water.
- Nutrient Removal Study, Southern Water. We undertook the
feasibility study and outline design of nitrogen removal plant for
the Peel Common, Budd’s Farm, Chichester and Thornham STWs. These
works discharge to sensitive waters and are to be upgraded as part
of AMP4.
Rippenden Wood, refurbishment of wastewater
treatment plant for Yorkshire Water, UK
Read about our work around the world