Availability of fresh water is getting limited and environmental concerns drives wastewater management for buildings; more and more buildings are setting up water and sewage treatment plants for their needs.
The green building movement also places an allowance on water conservation and recycling, along with energy savings. At Basscomm Nigeria Limited, we understand these trends and work closely with our customers to meet their current and future needs.
Basscomm Nigeria Limited is a leading solutions provider and with our track record of delivering water and wastewater treatment systems solutions having three key strengths: Advanced Technical Strength, Modern Design Capability and Strong Project Management Skills at comfortable costs.
The basic steps adopted in our wastewater treatment are highlighted below
Step 1: Screening and Pumping
The incoming wastewater passes through screening equipment where objects such as rags, wood fragments, plastics, and grease are removed. The material removed is washed and pressed and disposed of in a dedicated space. The screened wastewater is then pumped to the next step: grit removal.
Step 2: Grit Removal
In this step, heavy but fine material such as sand and gravel is removed from the wastewater. This material is also disposed of in a dedicated space.
Step 3: Primary Settling
The material, which will settle, but at a slower rate than step two, is taken out using large circular tanks called clarifiers. The settled material, called primary sludge, is pumped off the bottom and the wastewater exit the tank from the top. Floating debris such as grease is skimmed off the top and sent with the settled material to digesters. In this step, chemicals are also added to remove phosphorus.
Step 4: Aeration / Activated Sludge
In this step, the wastewater receives most of its treatment. Through biological degradation, the pollutants are consumed by microorganisms and transformed into cell tissue, water, and nitrogen. The biological activity occurring in this step is very similar to what occurs at the bottom of lakes and rivers, but in these areas the degradation takes years to accomplish.
Step 5: Secondary Settling
Large circular tanks called secondary clarifiers allow the treated wastewater to separate from the biology from the aeration tanks at this step, yielding an effluent, which is now over 90% treated. The biology (activated sludge) is continuously pumped from the bottom of the clarifiers and returned to the aeration tanks in step four.
Step 6: Filtration
The clarified effluent is polished in this step by filtering through 10 micron polyester media. The material captured on the surface of the disc filters is periodically backwashed and returned to the head of the plant for treatment.
Step 7: Disinfection
To assure the treated wastewater is virtually free of bacteria, ultraviolet disinfection is used after the filtration step. The ultraviolet treatment process kills remaining bacteria to levels within our discharge permit.
Step 8: Oxygen Uptake
The treated water, now in a very stabilized high-quality state, is aerated if necessary, to bring the dissolved oxygen up to permit level. Pollutant removal is maintained at 98% or greater.
With Basscomm’s expertise, profound design and construction capabilities we deliver the capability to Design, Construct, Install & commission plants of almost all capacities & technologies. It provides total water & wastewater treatment solutions to commercial institutions like Hotels, Hospitals, Shopping malls, IT Parks, Residential and other commercial complexes.
Consult with us today, let us provide you with excellent solutions that work.
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