Waste Water Treatment Processes
Industrial and domestic processes lead to various forms of waste including water, solids 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 waste treatment process produces harmless products such as water, recycled products and harmless, biodegradable products. The processes involved in the treatment of these wastes differs depending on the source and the type of waste. Wastewater is common in most process including in homes and industries. The wastewater treatment process involves various stages.
Wastewater from homes is normally treated in septic systems. The septic system is simple and should always be functional. Septic systems serving a larger number of people are more complex since they have to absorb a higher volume of waste. Large water treatment plants for use in large factories and high residential areas are however available. There are manufacturers of wastewater treatment plants and can help with the design and construction of wastewater treatment plant. They will design the plan according to the project specific needs. Engineers at the manufacturers will oversee the project from its design stage to monitoring and maintenance works. These systems are complex and require large capital outlay. The water released from these systems are quality clean and therefore used at commercial levels.
The wastewater treatment plants involve three main stages. Water flows through pipes either by pumping or gravitational force to large reservoirs. In the reservoirs, there is separation of floating and suspending solids from the water. Centrifugal force is applied at this stage. The stage removes about 60% of the suspended solids. Removal of solids can be increased through addition of chemicals. water is then pumped to the secondary stage which is referred to as the organic stage. In the second stage, the remaining biodegradable and suspending articles are given as food to organism such as fish. The organisms consume the biodegradable components in the water and remove the phosphates and nitrates in the water. About 80% of water impurities is removed at this stage. Water released to the environment at this stage is not harmful.
water is however made pure by
taking it to the third stage. This phase is known as tertiary level, and the water released here can be used for different purposes. Various chemicals are applied to remove the impurities and ensure that it is safe. Chlorine is used by several firms though it have become a subject of debate in the recent.
When water is being pumped into the treatment plant; it should not contain industrial chemicals. The company that is producing water containing chemicals should remove these chemicals by having a treatment plant at their base.
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