AERATION PROCESS (Proses Aerasi) WTP & STP | Apa itu Aerasi?

Summary

This video explains the process of wastewater aeration, focusing on how it helps treat domestic waste in residential areas. It covers the types of wastewater—black water and grey water—and the role of microbes in breaking down organic material. The aeration process, which involves adding oxygen to water using tools like aerators, blowers, and rotors, is crucial for maintaining microbial activity. The video also introduces various aeration methods, such as diffusers, floating fountains, oxidation ditches, and superficial floats. It emphasizes the importance of controlled aeration for effective wastewater treatment and encourages further learning on the topic.

Takeaways

• 😀 Wastewater treatment is crucial for both housing developers and residents to understand, even if you're not an expert.
• 😀 Domestic wastewater is typically divided into black water (human waste) and grey water (wash water and bath water with detergent).
• 😀 The industrial process for wastewater treatment is called Sewage Treatment Plant (STP), and water from natural sources like rivers is treated at a Water Treatment Plant (WTP).
• 😀 Microbes play a key role in processing organic materials in wastewater treatment, and aeration is required to keep these microbes healthy.
• 😀 Aeration involves adding dissolved oxygen to water, typically through devices like aerators to increase the contact surface between air and water.
• 😀 Aerators are powered by blowers or rotating rotors, which consume significant energy, so aeration is controlled based on oxygen levels.
• 😀 Oxygen levels in water are monitored using devices like the Oxone Gen M knife, which helps automate aeration based on dissolved oxygen content.
• 😀 The aeration process can be done using nozzles or shafts that inject oxygen directly into wastewater or by forcing water upwards for oxygen contact.
• 😀 Common industrial aeration methods include diffusers (for injecting air), floating fountains (for water spraying upwards), and oxidation ditches (where rotating rotors aerate water).
• 😀 Superficial floaters are aerators that float slightly submerged on the water surface and rotate, aiding the aeration process.
• 😀 The importance of understanding wastewater aeration and treatment is emphasized for both personal and community benefit, with a call for further learning and sharing knowledge.

Q & A

What is the primary purpose of wastewater treatment in residential areas?

The primary purpose of wastewater treatment in residential areas is to process domestic wastewater, making it harmless before releasing it back into the environment.

What are the two main types of domestic wastewater mentioned in the video?

The two main types of domestic wastewater are black water, which comes from human waste, and grey water, which comes from washing and bath water containing detergents.

What are the terms used to describe wastewater treatment plants for domestic and industrial purposes?

For domestic wastewater, the treatment process is called a Sewage Treatment Plant (STP). For water treatment involving river, lake, or sea water, it's called a Water Treatment Plant (WTP).

Why are microbes involved in the wastewater treatment process?

Microbes are involved in wastewater treatment to break down organic materials, helping to remove harmful substances from the water.

What is the role of aeration in wastewater treatment?

Aeration adds dissolved oxygen to the water, which supports the growth and survival of the microbes responsible for breaking down organic materials in wastewater.

How does an aerator function in wastewater treatment?

An aerator works by enlarging the contact surface between water and air, facilitating the dissolution of oxygen into the water, which is essential for microbial activity.

What is the purpose of using a DO meter in the aeration process?

A DO (Dissolved Oxygen) meter measures the oxygen content in the water. This helps control the aeration process automatically, turning the aerator on or off based on the oxygen level.

What are the two main methods of aeration described in the video?

The two main methods of aeration are: (1) inserting air directly into the wastewater using nozzles or shafts to introduce pure oxygen, and (2) using a blower or rotating propeller to force water upwards, maximizing contact with oxygen.

What are some common aeration tools mentioned in the video?

Common aeration tools include diffusers, floating fountains, oxidation ditches, and superficial float aerators, each serving different functions to introduce oxygen into wastewater.

Why is aeration not done continuously in wastewater treatment?

Aeration is not done continuously to conserve energy. The aerator is only activated when oxygen levels in the water are low, based on the readings from the DO meter.