Wastewater treatment plant for heavy metals using ferrites

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  • Objective: NBU Mint
  • Electroplating production
  • Wastewater treatment plant for heavy metals using ferrites
  • Capacity: 30 m3/day
The initial data of the object
  • Daily flow rate of industrial wastewater up to 30 m³/day
  • Heavy metal ions in wastewater Cr3+, Cr6+, Zn 2+, Ni2+, Cu2+, Sn2+, Co2+, Cd2+, Fe3+
  • Concentrations of heavy metal ions in wash water 20 - 130 mg/l
  • Waste pickling solutions - Fe2+ concentration - up to 50 mg/l
  • Requirements for the quality of wastewater treatment - MPC for discharge to the municipal sewerage system
  • Limited space for the treatment plant
  • The technology is based on the ferromagnetic method for the removal of heavy metal ions
  • Preparation of ferromagnetic suspension from electroplating waste
  • Removal of all heavy metal ions from wastewater in a single reactor. The residence time is 5 minutes.
  • Using a compact module for sludge dewatering and conditioning

Modules:

  • Preparation of ferrite slurry (FS) (optionally from waste solutions of electroplating production)
  • Dosing of FR and control of heavy metal ion removal efficiency
  • Separation of ferromagnetic particles
  • Dehydration of ferrite sludge formed after wastewater treatment from heavy metal ions
  • ASC TP
  • Reliable technological process for the removal of heavy metal ions to meet the requirements for discharge MPC
  • No concentration exceedances were noted during the long period of operation
  • Pollution in treated wastewater exceeds the standard
  • The plant control is fully automated
  • Dosing of ferromagnetic suspension is proportional to the concentration of contaminants
  • Treatment of concentrated wastewater and processing of concentrated pickling solutions
  • Low operating costs
  • Low amount of waste
  • High technological reliability;
  • Removal of all metals including chromium (VI) in a single reactor;
  • Reduced production space and plant size
  • Minimal operating costs;
  • Use of secondary raw materials - waste galvanic solutions;
  • Water reuse, 40 - 60 %;
  • The complex is operated in automatic mode;
  • Guaranteed quality of wastewater treatment below the MPC standards for discharge
  • Automatic quality control of treated wastewater
  • Sludge moisture below 50%
  • The volume of sludge is 50 to 60 times less compared to traditional methods
  • Due to its crystalline structure, the dehydrated precipitate belongs to the 4th category.

Tisa complex
Waste water treatment plant for heavy metal ions using ferrites

Realized projects

 

  • Paper and cotton mill. Alytus, Lithuania
  • NBU Banknote Mint, Kyiv, Ukraine
  • Workshops of the Kyiv Metro, Kyiv
  • SE NTP EkPO, Brovary
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