Wastewater Treatment Processes And Benefits

In Australia, wastewater treatment is under the jurisdiction of the National Water Commission, managing solid waste, sewage treatment including human wastes, rainwater drainage, etc.

Sewage treatment plants in areas treat wastewater and byproducts or waste from wastewater treatment as sewage sludge, sand, and screenings. You can also get more information about the wastewater treatment process online.

Sewage treatment mainly consists of the process of removing waste products through a combination of physical, biological and chemical processes and ensures that the final product is environmentally safe treated water suitable for land use.

The term 'wastewater treatment' has in many countries today replaces the term 'sewage treatment'. Wastewater from industrial plants, refineries, etc. is treated onsite through the infrastructure and facilities to ensure that the waste is treated before released into the local environment.

The primary process of wastewater treatment:

The wastewater treatment process involves several steps, chief among them are the following:

1. Collection of wastewater at a central point or plants.

2. Odor control with the use of chemicals to neutralize the stench.

3. Screening Process, which involves the removal of large trash items such as broken bottles, plastic, etc. that can cause damage to the machinery and cause environmental damage.

Wastewater treatment provides many benefits such as stopping water pollution, ensure the environment is unpolluted and free from damage, maximizes the use of natural resources such as water, provide an alternative source of water for factories and industrial use, and ensure adequate water supplies for agriculture and irrigation purposes.

Wastewater Aerated Treatment – Techniques That Ensure Faster Recycling

Some modification of the conventional activated sludge treatment systems has been developed that serves to improve the efficiency of the activated sludge treatment process. You can also look for more information about aerated wastewater treatment plants via ecoseptic.

Modified aerated wastewater treatment systems are briefly discussed below:

1) Tapered Aeration

As the influent sewage after primary settling enters the top end of the aeration tank; it has relatively high oxygen demand.

At this distance from the inlet of the aeration tank, the oxygen demand increases. This realization has led to modify the processing of waste activated sludge through aeration tapered.

In this case, while the effect was taken at one position of the inlet end, the amount of air supplied to the final position in the larger of which is provided at the outer end.

2) Step Aeration

It is another modification, which is based on the same concept, namely, oxygen consumption of liquor mixture, decreases as the distance from the inlet wastewater aeration tank increases.

In this type of aerated wastewater treatment system, activated sludge was returned was brought in at the end of the aeration tank inlet but the primary waste is taken at a different position from the inlet end for some distance towards the end outlet.

3) Extended Aeration

This type of wastewater treatment system is characterized by a low BOD load and is commonly used to treat wastewater from small communities, schools, and residential colonies.

Aeration period is of 24 hours or more. Extended aeration can receive periodic load without getting angry.