Water environment protection


GIPROKOKS - applying of advanced water supply and water discharge circuits with closed recirculating cycles


The following technical concepts are provided for  water basins protection against contamination: 

  • Closing of water cycle for final coke oven gas cooling
  • Zero-discharge water supply systems (purification and recycling of sludge waters of coal preparation plants and aspiration systems, utilization of clarified phenolic waters within the enterprise)
  • Plants for neutralization and decontamination of acid and other toxic wastes
  • Units for regeneration of salt-containing drains following the chemical water treatment
  • Ozonization plants
  • Utilization of excess sludge, tar and oils (dewatering or thermal decontamination
  • Biochemical treatment plant of phenol–containing waste waters
  • Utilization of sludge, acid pitch and exhausted solutions of sulphur purification  by means of adding into coal blend
  • Final cooling of coke oven gas in closed systems

At the up-to-date biochemical treatment plants the efficiency of phenol removal makes up to 99.9%; for other substances - up to 80%-99.5%.
When utilizing the clarified phenol-containing waters for coke quenching the emissions of hazardous substances from quenching towers into atmosphere do not exceed the emissions being formed during coke quenching with service water.


Giprokoks elaborates documentation for:

  • Outdoor pipe networks and facilities of water supply and sewerage
  • Facilities of production recirculating cycles for service water supply
  • Facilities of collection and purification of industrial waste water, rain water and sludge water
  • Phenol effluent treatment facilities (BOD plant)
  • Projects of sludge, domestic and drain sewerage
  • Basic flow charts and balances of water supply and water discharge
  • Interplant service pipelines on columns, in tunnels, in channels and underground

 

Giprokoks performs supervision of subcontractors design engineering for the off-site water intake facilities, accumulating units and settlers as well as domestic water treatment plants.


Diagram of phenolic waste waters biochemical treatment plant

Biochemical treatment plant