Effluent Treatment Plants And Their Impacts Across Different Industrial Sectors

Need of ETP

To clean industry effluent and recycle it for further use.
To reduce the usage of fresh/potable water in Industries.
To cut expenditure on water procurement.
To meet the Standards for emission or discharge of environmental pollutants from various Industries set by the Government and avoid heavy penalties.
To safeguard the environment against pollution and contribute to sustainable development.

Effluent Treatment Plant or ETP is one type of wastewater treatment method which is particularly designed to purify industrial wastewater for its reuse and the aim of our effluent treatment plant for foundry industry is to release safe water to the environment from the harmful effect caused by the effluent.

Increasing efficiencies in crop management and the continuing increases in crop yields have increased demands on water resources for irrigation purposes and the same can be said for effluent treatment plant for edible oil refinery. Effluents are reused for irrigation purposes in many countries around the world on all of the populated continents. A number of these countries have developed guidelines that give quality criteria and advice on how effluents should be reused for irrigation purposes.

There is a range of mechanisms wastewater treatment companies in Coimbatore that can be used to reduce the pressure on freshwater resources for irrigation use. One possible mechanism is the recycling of wastewaters and drainage water that can be used in the place of other freshwater sources for irrigation.

The use of recycled water for the irrigation of crops has benefits in using a resource that would otherwise be discarded and wasted. Using recycled water also reduces the pressure on the environment by reducing the use of environmental water. Our effluent treatment plant for textile dyeing industry also has a huge positive impact on the world. There are factors that need to be considered, including the presence of pathogens and chemical contaminants as well as salinity and impacts on soil structure. These can all be controlled through treatment and effective farm management practices.

Industrial Effluent Treatment Process:

The treatment of different effluents varies with the type of effluent treatment plant for automobile industry you have. Wastewater enters the effluent or sewage treatment plant and goes through several processes before effluent goes into the environment. The Industrial effluent treatment plant process includes the following stages:

a. Preliminary Treatment:

Its objective is the physical separation of large-sized contaminants. For example cloth, paper, plastics, wood logs, etc. This level/process

Screening:

This is the first unit operation that occurs in wastewater treatment plants. A screen is a device with uniform openings and its purpose is to remove large floating solids.

Sedimentation:

It is a physical water treatment process using gravity to remove suspended solids from water.

Grit Chamber:

The wastewater that moves into the grit chamber removes the dense inorganic solids such as gravel, metal fragments and sand which have made their way into the sewers. Removal of grit can prevent damage to pumps & operational difficulties.

Clarifiers

b. Primary Treatment:

Its aim is the removal of floating and settleable materials such as suspended solids and organic matter. In this treatment, both physical and chemical methods are used. It includes:

Flocculation:

Flocculation is a physical process and does not involve the neutralization of charge with the plants manufactured by wastewater treatment companies in Coimbatore. It involves the addition of destabilized particles together into large aggregates so that they can be easily separated from the water.

Coagulation:

It is a process in which coagulants are added for the purpose of rapid settlement of minute solid particles in a liquid into a larger mass. It permits particle removal by sedimentation and filtration.

Neutralization:

The main purpose of this process helps in maintaining the pH range of 6-9 to meet the requirements of different processing units in the ETP system.

Primary Clarifiers:

These are used to slow the velocity of the water to a point where organic solids will settle to the bottom of the tank and they contain equipment that is used to remove floating solids and greases from the surface.

c. Secondary or Biological Treatment:

The objective of effluent treatment plant for textile dyeing industry with this treatment is the further treatment of the effluent from primary treatment to remove the suspended solids and residual organics. In this step, biological and chemical processes are involved.

Activated Sludge Process:

This is used for treating industrial wastewater using air and a biological floc composed of bacteria.

Aerated Lagoons:

It is a treatment pond provided with artificial aeration to promote the biological oxidation of wastewater.

Trickling Filters:

Trickling filters, also known as sprinkling filters, are commonly used for the biological treatment of domestic sewage and industrial wastewater.

Rotating Biological Contactor:

It involves allowing the wastewater to come in contact with a biological medium in order to remove pollutants in the wastewater before the discharge of the treated wastewater into the environment.

d. Tertiary/advanced/disinfection treatment:

The purpose of tertiary treatment is to provide a final treatment stage to raise the effluent quality to the desired level before it is reused, recycled or discharged to the environment. This can also be seen with effluent treatment plant for automobile industry.

Chemical Coagulation and sedimentation:

It is used in effluent treatment plant for fertilizer industry to increase the removal of solids from effluent after primary and secondary treatment.

Filtration:

The clarified wastewater is first passed through the adjacent filtration plant which contains large filter blocks to ensure high-quality water.

Reverse Osmosis:

In this process, pressure is used to force effluent through a membrane that retains contaminants on one side and allows the clean water to pass to the other side.

UV Disinfection:

It is considered as an ideal disinfectant for industrial wastewater. It leaves no residual disinfectant in the water by ensuring the water quality. It does not produce any disinfection by-products.