Stages of Waste Water Treatment Process.
Both domestic and industrial processes leads to variety of waste including solids, water and gases. These wastes are absorbed into the environment and can be dangerous. However, if the wastes are taken through treatment plants, the amount of harm done to the environment could be minimal. The end products from the waste treatments plants include recycled products, clean water and safe, biodegradable products. The choice of treatment plant is dependent on the source and type of waste. Wastewater is common in most process including in homes and industries. The wastewater treatment process is carried out in three phases.
Wastewater from homes is normally treated in septic systems. Though the septic system is simple, it should always remain functional. Septic systems serving a larger number of people are more complex since they have to absorb a higher volume of waste. There are however wastewater treatment plants for use in high factories and residential estates. There are manufacturers of wastewater treatment plants that can help you design and manufacture a treatment plant. They will design the plan according to the project specific needs. The manufacturers have engineers who handle the project since its inception to monitoring and maintenance works. These systems are complex and require large capital outlay. These systems remove quality clean water and thus used at commercial levels.
The water treatment process ahs three main phases. Water flows through pipes either by pumping or gravitational force to large reservoirs. There is removal of floating and suspending solids in the reservoirs. This process happens in the presence of centrifugal force. About 60% of solids will be removed at this stage. Chemicals can be used at times to increase the removal of solids. water is then pumped to the secondary stage which is referred to as the organic stage. At this level, the remaining biodegradable and suspending particles are provided as food to organisms such as fish. The organism in the water eat the food particles in the water remove the phosphate and nitrates nutrients in the water. This stage removes over 80% f the water impurities. Water released to the environment at this stage is not harmful.
water is however made pure by
taking it to the third stage. It is referred to as the tertiary stage and water can be used for a wide range of uses. Various chemicals are applied to remove the impurities and ensure that it is safe. Some firms use chlorine to remove all impurities though it has become a subject of discussion in the recent.
Water pumped into the wastewater treatment plant should not contain industrial chemicals. The individual factory releasing such waters should take individual responsibility by establishing a treatment plant at their base before releasing such water.
Another Source: more info here