Special Purpose Pollution Control/ Recycle Systems

» Plate Wash Water Recycle Systems

After charging is complete in the Plate Formation area, the battery plates are washed with De-mineralised water, to make them free of sulphuric acid.

The waste water produced in the above process contains impurities like sulphuric acid and soluble and insoluble lead materials.

Generally, this wash water is led to the underground drain, for taking the same to the effluent treatment plant, where it is neutralised using alkali or lime slurry.

HYDROCHEM have developed  “Plate Wash Water Recycle Systems” for battery industries. In this system, the acidic wash water is collected from the plate wash area, without getting contaminated and taken to the recycle system. In the recycle system, the wash water is treated to remove impurities like sulphuric acid and lead, to produce De-mineralised water, which can be used back in the plate washing process. 

 

The advantages of HYDROCHEM Plate Wash Water Recycle System are…

  1. Reduced load on ETP. Minimisation of pollution hazard.
  2. User friendly. Easy to operate.
  3. Great savings. Pay back periods of less than one year.
  4. Reduces consumption of treatment chemicals at ETP.
  5. Turn Key installations undertaken.    

      6.   Produces De-mineralised water, which is used in the process.
 

» Acid Recycle Systems

Sulphuric acid is generated during the charging of battery plates in the plate formation jars. Dilute solution of sulphuric acid is used as an electrolyte in the formation jars, in which the plates are arranged as cathodes and anodes. External electrical potential is applied to the series of cathodes and anodes to carry out the charging operation.

Electrolytic reactions taking place during the charging operation result in formation of sulphuric acid. Thus, the concentration of sulphuric acid in the formation jars, which is initially approx.4%, ( Sp. Gravity = 1.030 ), increases up to 6-8% ( Sp. Gravity of 1.060 ).

In order to maintain the acid concentration at 4% level, some quantity of acid is removed from each jar and the reduced volume is made up by addition of DM water into every jar. This acid removal is done after every charging cycle of approx. 35 hours.

Generally, this acid removal operation is done manually and the acid removed from the jars is led to the underground drain, for taking the same to the effluent treatment plant, where it is neutralised using alkali or lime slurry.

HYDROCHEM have developed  “Acid Recovery & Recycle Systems” for battery industries. In this system, the acid is collected from the charging jars, without getting contaminated, re-conditioned and used back completely either in plate formation process or in acid dilution plant.

The advantages of HYDROCHEM Acid Recycle System are…

  1. Complete recovery & recycle of acid.
  2. Reduced load on ETP. Minimisation of pollution hazard.
  3. User friendly. Easy to operate.
  4. Great savings. Pay back periods of less than one year.
  5. Reduces consumption of treatment chemicals at ETP.
  6. Turn Key installations undertaken.    


» Paste Recycle Systems

» On-Line Acid Dilution Plants