One of the most common on-site wastewater treatment methods is the use of a concrete septic tank. This product is designed for sanitary treatment in residential areas, restaurants, and hotels. The low flow speed in sewer pipes often leads to clogs, and the primary purpose of a septic tank is to enhance the treatment process.
How Does a Concrete Septic Tank Work?
Wastewater first enters the concrete septic tank through inlet pipes. Solids settle at the bottom of the tank due to their weight, while fats and oils float on the surface due to their lighter weight. The treatment process occurs in several stages. In the first stage, large particles settle as sludge. The settled materials are decomposed by bacteria produced within the tank. Microorganisms further break down the settled materials in the next stage, reducing pollution. These microorganisms and bacteria originate from the settled materials. The remaining sludge at the tank’s bottom needs to be periodically removed, typically every few years. Note that during sludge removal, not all sludge should be extracted to maintain sufficient microorganisms for continued decomposition.
Implementation of Concrete Septic Tanks
There are two ways to implement a concrete septic tank:
- Pre-fabricated septic tank.
- Septic tank constructed on-site.
Pre-fabricated Septic Tanks
These are available in two capacities, 2 cubic meters and 12 cubic meters. They are designed in vertical and cylindrical forms. The interior wall divides the septic tank into two separate sections. In one cylinder, solids settle, and fats and oils float. The wall acts as a barrier for the next treatment stage, preventing settled materials and floating fats from entering the second section. The effluent is then transferred to an absorption pit via an outlet pipe.
On-site Constructed Septic Tanks
The design for on-site constructed septic tanks is based on the wastewater volume. These tanks are rectangular and made with construction materials, rebar, and concrete. The internal surface of the septic tank is coated with concrete adhesive, and the exterior is sealed with waterproofing materials like bitumen. The area for installation is excavated to fit the tank dimensions before setup.
Advantages of Concrete Septic Tanks
- Rapid Design Execution: The execution plans are quickly drawn up.
- Low Cost of Installation and Implementation: They are cost-effective to install and maintain.
- Adaptable to High Groundwater Levels: Suitable for areas with high groundwater levels.
- Applicable in Low-Permeability Soils: Can be used in areas with poor water absorption.
- Minimal Maintenance: Made from building materials, these tanks do not require mechanical components, reducing the need for maintenance.
Pricing of Concrete Septic Tanks
The cost of concrete septic tanks varies based on their size and dimensions. You provide the intended installation space to ABtank Company, and costs are calculated based on the concrete and materials used. Experts will design and provide execution plans when procuring a concrete septic tank. The first step in the design is to measure the volume of wastewater produced at the site.
ABtank Company manufactures various types of septic tanks, including polyethylene septic tanks, composite septic tanks, and concrete septic tanks. For guidance, contact the experienced experts at ABtank.
