Construction Water
Treatment of construction water from surface works is relatively straight forward and generally only requires a high degree of solids management, however for tunnelling projects, it is inevitable that infiltrated ground water will bring with it a vide variety of contaminants requiring a much higher level of treatment.
Engaging Hydroflux to construct your water treatment plant means that you will have access to a skilled team experienced in water treatment for infrastructure projects. Our team includes process, mechanical, chemical, and electrical engineers plus a team of qualified and experienced project managers, site supervisors, commissioning engineers and service technicians.
We are based in most capital cities providing you with a local presence throughout the duration of the project.
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Treatment of water from construction site will usually comprise one or more of the following processes:
- Screening
- Gross and enhanced clarification,
- Multimedia or green sand filtration
- Carbon filtration
- Ion exchange
- Ultrafiltration
- Reverse Osmosis
- Disinfection
Clarification
Hydroflux has a range of designs to efficiently handle the high volumes of solids produced during excavation and TBM operation. These systems can be located within the tunnel for gross solids removal or incorporated into the main water treatment plant at the surface. Removal of solids from tunneling operations is typically a staged process using “fish tanks”, large conical based vessels and compact lamella separators.
Once gross solids are removed from the water stream, the pH will require adjustment and flocculants are dosed to enhance the separation of the finer material. Once the solids have been flocculated, a robust, compact and modular Hydroflux lamella separator is typically used to separate the solids from the water phase.
Solids Handling
Hydroflux has a range of designs to efficiently handle the high volumes of solids produced during excavation and TBM operation. These systems can be located within the tunnel for gross solids removal or incorporated into the main water treatment plant at the surface.
Removal of solids from tunneling operations is typically a staged process using “fish tanks”, large conical based vessels and compact lamella separators. The TunnelMAX system is a unique Hydroflux product that dewaters solids inside the tunnel as a pre-treatment stage to reduce the load on the surface water treatment plant.
Chemicals
Various chemicals are required for water treatment plants on construction sites including acid, coagulants, flocculants and various chemicals for the downstream polishing stages when required. Hydroflux not only designs suitable chemical storage and dosing facilities but can also offer its own range of proprietary chemicals specially formulated to treat water from construction sites. For information on chemicals click here
Water polishing for reuse and high-quality discharge
The legislation for discharge water form construction site is becoming far more stringent with the EPA requiring extremely low levels of metals, hydrocarbons and emerging contaminants. As the typical discharge requirements generally exceed the water quality required for recycling, reuse of water within the tunneling operation or its use for irrigating or supply surrounding areas is a beneficial and sustainable option.
- Multimedia filtration
- Greensand filtration
- carbon filtration
- Ion exchange
- Ultrafiltration
- Reverse Osmosis
- Disinfection
- UV
Hydroflux employs skilled civil, mechanical, chemical and electrical engineers plus a team of qualified and experienced project managers, site supervisors, commissioning engineers and service technicians based in offices in most capital cities providing you with a local presence throughout the duration of the project.
- Process design, development of PID’s and HAZOPS reviews
- Establishment of the most suitable and compact wastewater treatment plant layout
- Equipment and component selection
- Preparation of documentation for council or other regulators
- Electrical design and programming
- Project management and site supervision
- Environmental / Occupational health and safety plans and report
- Quality assurance plans
- Building works, mechanical and electrical installation
- Commissioning, training and documentation as required.
Operation and support
The provision of various levels of support is critical to the ongoing successful operation of construction water treatment plants.
Hydroflux has a team of service technicians and engineers in most capital cities who can provide on site and remote technical support, regular service and maintenance and offer 24/7 emergency call outs.
Various chemicals are required for water treatment plants on construction sites including acid, coagulants, flocculant and various chemicals for the downstream polishing stages when required. Hydroflux not only designs suitable chemical storage and dosing facilities but can also offer its own range of proprietary chemicals specially formulated to treat water from construction sites. For information on chemicals click here
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