The simplest form of dewatering is sump pumping, where groundwater is allowed to enter the excavation where it is then collected in a sump and pumped away by robust solids handling pumps. Sump pumping can be effective in many circumstances, but seepage into the excavation can create the risk of instability and other construction problems.

Pumping tests can be an important part of the investigations for dewatering and other construction projects. Supported by other types of groundwater investigations and groundwater monitoring they can provide valuable information for the planning and design of construction projects. We can develop bespoke testing programmes to meet your needs and carry out a complete design.

We have been engaged to take over long-lasting projects by providing proven effective technologies and services to the affected site with great success where other approaches may have failed. Overall, groundwater remediation is an important aspect in protecting the environment and we are proud to do our part by providing a variety of treatment approaches addressing contaminated sites.

Leachate refers to the liquid, contaminated water, that results from the interaction between any water in a landfill, e.g., as the result of rainwater infiltration, and the waste emplaced in the landfill. Leachate constitutes one of the major environmental and health risks associated with landfills. Typically, virtually always, leachate is a very complex liquid.

Groundwater prospecting involves various methods to locate suitable quality and quantity groundwater for extraction. Groundwater prospecting and extraction can both be part of general water resource management strategies to increase supply, or respond to climate change induced water scarcity or variability. Prospecting and extraction methods depend on the desired water quality and its final utilization.

We cover the full spectrum of geothermal operations, including design and implementation of exploration programs geothermal drilling projects design, execution, and interpretation of well logging and testing conceptual modeling based on integration of geologic, geochemical, geophysical, drilling, and well test data reservoir engineering and numerical simulation of reservoirs wellbore simulation and well design optimization of resource use project feasibility studies.

Deep well dewatering systems are used to lower groundwater levels to provide stable working conditions in excavations. A deep well system comprises of an array of drilled or jetted wells, each fitted with an electric submersible pump.

In chemistry, a dehydration reaction is a conversion that involves the loss of water from the reacting molecule or ion. Dehydration reactions are common processes, the reverse of a hydration reaction.

Sludge dewatering is the practice of minimizing waste by volume to prepare for its effective disposal. Sludge originates during the process of treating wastewater before the water can be released back into the environment.

Groundwater Control Services

Arab dewatering is a leading provider of groundwater control services.
We specialize in the design, installation and maintenance of dewatering systems.

Our technical expertise is underpinned by in-house design capability, comprehensive drilling experience and ongoing research into predictive modeling and groundwater management.

Pressure Relief Wells

Pressure relief wells are a method of controlling excess pore water pressures in confined aquifers. The artesian or sub-artesian head within a confined aquifer can be dangerous if the overburden pressure is equal or less than that of the confined pore water pressure, and if not dealt with it will result in piping or heaving of the base of the excavation.

There are two basic means of relieving this pressure
1. The use of Passive Pressure Relief Wells ; and
2. The use of active pumping pressure relief wells, which can consist of either deep wells Orwell points.

The recommended solution is to adopt an active pumping pressure relief system.
The reason is that this system gives you greater control over the problem area.
While passive relief systems can be a more economical solution, they can lead to difficult working conditions with groundwater seepage onto the excavation floor, necessitating a progressive sumping arrangement to remedy. Passive relief systems can also prove difficult to seal effectively upon completion of the project.

A variation of a passive well is sand drains, which is provides a drainage path between two aquifers. Typically, they are used to drain a perched aquifer, which cannot dewater by gravity drainage into a dewatered lower aquifer.
They are particularly effective where the perched water would cause stability problems to an open-cut excavation, or to speed up the consolidation of silts and soft clays.

Project Dewatering is a leading provider of groundwater control services. We specialize in the design, installation and maintenance of dewatering systems. Our technical expertise is underpinned by in-house design capability; comprehensive drilling experience and ongoing research into predictive modeling and groundwater manage