Effluent treatment plant for the chemical industry

November 18, 2022by newebay020

An effluent treatment plant, also known as ETP, is a unit where wastewater is processed using a variety of techniques for reuse or safe disposal, into the environment. While maintaining a clean environment, this procedure lowers the demand for fresh water. The goal of an effluent treatment plant is to discharge clean water into the environment, while protecting it from the negative effects of the effluent.


As we know that the industrial wastewater contains a variety of pollutants, necessitating the use of a specific treatment method called ETP. Depending on the industry, industrial effluents comprise a range of different substances. Some effluents contain hazardous substances as in chemical industries, while others contain oils and grease.


Effluent treatment plant for chemical industry


Effluent Treatment Plant: Components


An effluent treatment plant (ETP) is divided into four levels, each of which is intended to remove a certain kind of material from the effluent, depending on the level of treatment the wastewater needs. It is aimed to produce water that is as environmentally friendly as possible, after the procedure is through.


The following levels of effluent treatment in the chemical industries are discussed below:


  1. Preliminary level


It includes procedures to get rid of the physical trash that is in the effluent. Physical procedures like sedimentation, filtration, aeration, flow equalization, clarifying, and screening, are used at this level.


  1. Primary level


It aims to get rid of organic waste and big solids. Both chemical and physical mechanisms are involved. The same physical procedures that were used in level one is used here.


To increase the effluent’s quality, specific chemicals are added during the chemical process. Chemical coagulation, pH regulation using sodium carbonate or HCI, chemical precipitation, flocculation, are some of these chemical processes.


  1. Secondary level


It involves the removal of suspended particles and biodegradable organic compounds. Both biological and chemical processes are used at this level.


The degree of biological processes is comparable to the chemical processes, and comprises the attached-growth/fixed-film technique as well as the suspended-growth approach. It is possible to combine the two biological processes or pick one of them alone.



  1. Tertiary level


At this level, dissolved and suspended materials must be removed using a combination of physical, chemical, and biological processes. The procedures are same as that covered in earlier levels.


What chemicals are utilized in ETP?


Here are some common chemicals used in ETP:


  • Acid (HCl) and base (NaOH) for pH neutralization.
  • Coagulant/Settling Aids: Aluminium Sulfate, Ferric Sulfate, Ferric Chloride, which may be used alone or in conjunction with Poly Electrolytes (Polymers).
  • Supplemental ingredients: urea and diammonium phosphate.
  • Ozone, bleaching powder (sodium hypochlorite), chlorine, and other disinfectants.
  • Activated Carbon Adsorption.
  • Ion Exchange resins based on the particular ion that needs to be eliminated.


Why should you choose Netsol Water Solutions as your effluent treatment plant manufacturer (ETP)?


Netsol Water Solutions’ works with medium-sized industries by providing ETP or STP operation & maintenance services. Our company has a wealth of experience in the operation and upkeep of effluent treatment plants for chemical industries.


We provide:


  • An expert supervisor and well-trained, qualified, and experienced operator, to ensure the day-to-day troubleshooting at ETP and STP operations and maintenance.
  • Operators are taught how to keep track of everything, making it simpler to spot any irregularities at an early stage.
  • Optimal chemical use to increase effectiveness.
  • Preventative care to avert major failure.

For any other support, inquiries, or product purchases, call on +91-9650608473 or email at enquiry@netsolwater.com




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