What are the different stages of water treatment?

These include: (1) Collection ; (2) Screening and Straining ; (3) Chemical Addition ; (4) Coagulation and Flocculation ; (5) Sedimentation and Clarification ; (6) Filtration ; (7) Disinfection ; (8) Storage ; (9) and finally Distribution.

What are stages of water?

The water cycle consists of three major processes: evaporation, condensation, and precipitation. Evaporation is the process of a liquid’s surface changing to a gas. In the water cycle, liquid water (in the ocean, lakes, or rivers) evaporates and becomes water vapor.

What is the last stage of water treatment?

Tertiary treatment
Tertiary treatment, also known as polishing, disinfects water to the highest standards. This stage is necessary to produce water to specification, such as technical waters, and to treat wastewater for public water systems. UV disinfection requires no chemicals, and it can be used in place of chemicals.

What is the first stage of water treatment?

Primary treatment (stage 1) This is when wastewater is temporarily held in large sedimentation tanks to remove settleable solids. With gravity, heavier solids sink to the bottom while lighter solids rise to the top. Chemicals can also be added as coagulants to remove more solids.

What is the second stage of water treatment?

Secondary Treatment The secondary stage of treatment removes about 85 percent of the organic matter in sewage by making use of the bacteria in it. The principal secondary treatment techniques used in secondary treatment are the trickling filter and the activated sludge process.

What is the first step of water treatment?

Step 1: Screening and Pumping The incoming wastewater passes through screening equipment where objects such as rags, wood fragments, plastics, and grease are removed. The material removed is washed and pressed and disposed of in a landfill.

What is primary secondary and tertiary water treatment?

Wastewater is treated in 3 phases: primary (solid removal), secondary (bacterial decomposition), and tertiary (extra filtration).

What is tertiary treatment of water?

Tertiary water treatment is the final stage of the multi-stage wastewater cleaning process. This third stage of treatment removes inorganic compounds, bacteria, viruses, and parasites. Removing these harmful substances makes the treated water safe to reuse, recycle, or release into the environment.

What are the 3 stages of wastewater treatment?

Aerobic. Aerobic wastewater treatment takes place in the presence of oxygen.

What are the steps of the water treatment process?

– Remove specific contaminants – Take extra precautions because a household member has a compromised immune system – Improve the taste of drinking water

What are the steps to the drinking water treatment?

ION Exchange and Coagulation. This is the first step of the purification process.…

What are the 3 stages of sewage treatment?

Primary treatment (stage 1) Primary wastewater treatment involves sedimentation.