Black water is the component of sewage or domestic wastewater which is the wastewater used to flush toilets and contains human wastes. Black water holds many viruses and bacteria that are not only harmful to people but can also be harmful to the environment. When left untreated it can leech into the ground and contaminate ground water supplies as well as having a negative effect on flora and fauna. This can even lead to the death of aquatic life and terrestrial life. This makes it even more important to properly treat black water.
Typical sewage treatment processes are also used to treat black water. Similar to typical sewage treatment, the treatment process is separated into primary treatment, secondary treatment and tertiary treatment. The majority of nutrient, organic and inorganic contaminant removal takes place in the secondary treatment wherein popular attached growth and suspended growth biological systems are used to treat black water.
Examples of attach growth bioreactors are Trickling Biological Filters and Moving Bed Biofilm Reactors (MBBR). Popular suspended growth bioreactors include Activated Sludge Systems, Membrane Bioreactor (MBR) and Sequencing Batch Reactor (SBR).
Membrane Bio Reactor (MBR)
The Membrane Bio Reactor combines biodegradation and membrane separation into a single process. The MBR can come in a variety of sizes and can even be containerised for ease of deployment.
Sequencing Batch Reactor (SBR)
The SBR has a five step process and is a treatment system that works best with low, fluctuating or intermittent water flow. It is a low cost and simple option for black water treatment.
Trickling Biological Filters
The removal of pollutants from the wastewater stream involves both absorption and adsorption of organic compounds by the layer of microbial biofilm growing on a filter media with very high surface area to volume ratio.
There are several options for treating black water. Enviro Concepts offer other options that may better suit your needs. To discuss these options further contact one of our consultants today on 1300 66 11 30 or drop us an email at [email protected]