Dewatering of a construction site refers to the process of water removal from pits or excavations to create a dry base where work can take place. If there are trenches filled with water or floods, the site will be unsafe and unsound to operate on. This is why dewatering pumps are used to drain these water-logged areas with a high water table or insufficient slope to make the site a more conducive workplace.
Another major factor when dewatering a site is to ensure that the water is discharged safely at an appropriate location, preferably into a wetland, lake, or storm sewer. Otherwise, there may be risk of problems like soil erosion and instability.
A Checklist of Precautions to Take When Dewatering
- Do not pump water directly into slopes
- Discontinue dewatering if you notice any signs of erosion or instability
- Ensure that dewatering channels are stable and covered with protective vegetaion or grass if possible
- Do not dewater when there are heavy rains in progress
- Do not directly discharge water that has been contaminated with chemicals or grease without separating them
Dewatering Pumps for your construction site
So how can you select the correct dewatering pump for your needs? Let’s take a look at different types of dewatering pumps and their benefits to get a better idea.
Self Priming pumps
As the name suggests, a self-priming pump has a special built-in mechanism that enables it to prime itself without manual intervention. They also come with a flood-control feature for quick dewatering and wastewater management. They can be used for frequent pumping operations and use less power and time to run than other centrifugal pumps. They are safe to operate and are the perfect choice for the monsoon.
Eterna CW/BW series
The Eterna CW/BW series of sewage dewatering submersible pumps are another great option. They can remove stagnant water from the basement, underground parking, and garages. These pumps drain accumulated stormwater during the monsoons, empty water tanks and pits, and remove wastewater from kitchens, hotels, clubs, and surplus water from sumps.
Auto prime pumps
An auto prime pump can provide a safe, efficient, and cost-effective solution for pumping larger liquid volumes. It is portable, simple to use, sturdy, and ideal for pumping water when suction is difficult. It can also be used to pump a variety of liquids (of different viscosities) apart from water, such as slurry. Auto prime pumps are useful in a vast variety of ways such as in groundwater control, sewage over-pumping, wellpoint dewatering, flood relief, mine dewatering, pipe relining, industrial sludge pumping, marine ballasting, tank sediment clearing, and emergency dewatering services.
Cutter pumps are designed to process heavy industrial waste and raw sewage material and to classify general wastewater types. The way they have been built eliminates any chances of clogging that is usually caused by oversized particles and objects like plastic bottles, aluminum cans, ropes, cables, fabrics, and all flushable products.
Cutter pumps can be used to drain sewage and wastewater from buildings and kitchens, and to move sewage and wastewater between water treatment facilities of factories and commercial sites.
At VEMC, we provide all the above types of dewatering pumps, so you can take your pick from any series that suits your requirements best for the monsoon season.
Preventing Water from Affecting Your Site
If you know that the soil in the area is less permeable than usual, you can try to cut down on the dewatering process by separating the layer of soil that is low in permeability from other sources of water. Slurry walls, sheet piles and grout curtians may prove useful alternatives to keep out water from coming into the construction base. Although doing this will probably not eliminate the problem completely, it comes in handy when the water table is high. You may still have to dewater the area to remove residual rainfall, but it is advisable to conduct a comprehensive engineering analysis to determine how this process will affect the other areas. For more information on industrial pumps, motors, and other equipment, feel free to contact us at +91 98199 07445. We would be glad to assist you in finding the best match for you based on your requirements. VEMC is an authorized dealer of Kirloskar dewatering pumps and provides end-to-end project management services to its clients. We are ISO 9001:2015 certified and a pioneer in the field of electromechanical engineering products, allied equipment, and services. For inquiries, contact us at firstname.lastname@example.org.