The process when it comes to treating waste materials in a sewage treatment plant is actually being separated in various stages where equipment like bomba or pump is used. The first stage would be the preliminary treatment. In this kind of stage, this will include the flow equalization, screening, grinding, and measurement of flow, extraction of grease and also removal of grit. Screenings and grit are then set to the landfills while the oil is going to be sent to the sludge handling facilities at the sewage treatment plant. The next stage in this case is then the main treatment. This will include the process of gravity settling to remove any suspended solids. This is actually where 60% of the wastewater that are suspended from households would be taken out. Any grease which is floating over the tank is going to be skimmed off with the debris that’s taken from the bottom of the tank.
The next stage would be the secondary stage. It is in this stage where they remove the dissolvable organics that are taken from the wastewater. The secondary stage treatment works with biological procedures and also with secondary settling. An activated sludge is in fact considered to be a popular biological process, but there are however different biological procedures which could be taken. At the activated sludge procedures, the microbes in this case or known otherwise as biomass will feed on the organic matter present in the wastewater.
An activated sludge system will however have some variations whether the air or an oxygen is going to be added, how the gas will be added and with where the wastewater is going to penetrate the biological reactor together with several tanks and on the process with how this is being mixed. Biological treatment systems to where the biomass is attached will also be used in the process. The examples of systems that contain the biomass that’s absorbed to rock plastic are the biological towers and also the trickling filters. In the biological treatment, the biomass that is generated will be placed at the secondary clarifiers. The secondary sludge or biomass will then be pipes to the sludge-management system.
A biological system is in fact being designed and is based on how long the sludge is. In its standard activated sludge system, there will be a requirement of 5 to 7 hours in order to retain sewage in its reactor. Due to the recycling process of sludge from its secondary filter, the biomass actually stays in the reactor for up to 10 days. Clarification process is then next with the secondary treatment and disinfection then follows. For a more efficient way of wastewater treatment, it is a must to use equipamentos industriais.
Chlorine is mostly being used for disinfection purposes and because of the environmental effects of chlorine, de-chlorination for wastewater will be needed before discharging it. Here is a related article at http://www.ehow.com/how-does_4896800_waste-water-treatment-plant-work.html on how wastewater treatment works.