What is Biological sewage treatment?
Biological sewage treatment is commonly used at some stage in the process, regardless of how municipal facilities manage their local community's waste.
But what is biological sewage treatment system? How does it work?
Biological Sewage treatment systems
Sewage, or human-generated wastes, is usually processed by publicly owned treatment works (or POTWs), which are often located in cities, counties, or regions. The operation of these facilities is determined by how they are funded and developed, but in general, these systems process these wastes, filter out all the solids, and treat what's left to create manageable byproducts. Biological sewage treatment systems are a minor portion of a bigger process that treat human wastes by breaking them down into various byproducts like sludge utilizing bacteria and other microbial partners.
How does it work?
POTWs employ a technology called "activated sludge" to run their biological sewage treatment systems aerobically (that is, they use bacteria that require oxygen to break down the wastes).
Simply said, the activated sludge process is a secondary treatment procedure that takes place after untreated wastewater is collected from all around the city, travels through all of the sewers, and enters pump stations and transfer stations that transport waste to treatment facilities. It then goes through a succession of solids removal pretreatment (screening, clarifying, grit removal, and so on) before reaching the reactor basin, where the biological component of the sewage treatment, or activated sludge process, takes place.
The water passes through the reactor basin (where all the bacteria and microorganisms are housed, nourished, and aerated with provided oxygen) and is treated by the microorganisms. The treated water is subsequently sent through another clarifier, which separates the biosolids (all solids formed after the biological work is completed) from the microorganisms. They settle to the bottom of a cone-shaped base in this clarifier and are either returned to the basin as activated sludge or discarded as solids, which are dewatered and sent to an anaerobic digestor or farm.
In a nutshell, sewage activated sludge is a technique that combines untreated wastewater with bacteria, allowing bacteria to grow on and break down all of the elements in the wastewater while retaining the bacteria by balancing returned activated sludge with waste active sludge.
1: Keeping the organisms alive by suspending them in a liquid
2: Combining wastewater with biomass
3: Aerating the "mixed liquor" to allow the germs to do their job
4: Settling the suspended particles from the combined liquid (MLSS)
5: RAS (return activated sludge) to the reactor basin
6: WAS (waste activated sludge) dewatered and processed as needed.
The amount of activated sludge that forms RAS or is wasted as WAS controls the concentration of bacteria in the reactor basin. By effectively limiting how much food the microbes get, these levels keep the quantity of suspended particles (which function as a catalyst) at a predetermined point defined by the plant operators.
In a nutshell, they're controlling MLSS (the bacterial concentration in the reactor basin) by determining how many cleared solids are returned and how many are squandered.
Is Netsol Water able to assist?
Please feel free to contact Netsol with any queries you may have about custom-designing and manufacturing biological wastewater treatment systems.
You may schedule a conversation with an engineer or obtain an estimate by visiting our website. We can guide you through the process of determining the best solution and determining realistic pricing for your biological wastewater treatment system requirements.