Business

Sewage / Wastewater treatment equipment operation business

MOLIT
Sewerage & Wastewater Treatment
Facilities Operation & Management

Major Project

Seongnam/Pangyo Water Restoration Center in Seongnam-si

Category Seoung Nam
Facility Capacity 460,000m³/d
Treatment Technique NPR, A₂O
Category Pangyo
Facility Capacity 47,000m³/d
Treatment Technique Bio-SAC

Modernization facility of Jungnang Sewage Treatment Center in Seoul (The 1st Treatment Plant)

Category Sewerage
Facility Capacity 250,000m³/d
Treatment Technique Biological filtration,
total phosphorus
Category First Flush
Facility Capacity 500,000m³/d
Treatment Technique High-speed
filtration,
disinfection
Category Water recycling
Facility Capacity 500m³/d
Treatment Technique R/O System

Guri/Galmae Water Restoration Center in Guri-si

Category 1st, 2nd sewerage
Facility Capacity 160,000m³/d
Treatment Technique MLE, I³
Category Galmae
Facility Capacity 11,000m³/d
Treatment Technique KSMBR
Category Incineration
Facility Capacity 55m³/d
Treatment Technique Fluidized Bed
Continuous Incinerator

Metropolitan landfill desulfurization pretreatment facility/ process wastewater treatment facility

Category Process wastewater
Facility Capacity 150m³/d
Treatment Technique Biological treatment, ozones +
chemical treatment

Strength

Strength of Molit’s Operation Management

Technology

  • Total phosphorus optimal control and process integrated control solution
  • Extensive know-how in facilities monitoring & control and operation of measurement equipment
  • Advanced technology for water treatment(Ozone, alloy catalyst, etc.)
    Retaining professional personnel for operating large-scale metropolitan city treatment facilities
  • Seongnam-si, selected as the best organization in the evaluation of public sewerage operation & management by the MOE (2019)

Stability

  • Strict water quality management exceeding effluent standards
  • Introduction of customized operation method by individual facility
  • Monitoring system and emergency system utilizing professional workforce and administrative computerization
  • Maximizes efficiency of management system for eco-friendly system maintenance

Economy

  • Reducing operation costs through optimal control of chemical input and air volume
  • Application of optimal integrated operation solution which can automatically analyze water quality and monitor it in real time
  • Reducing operation costs through proactive response to changes in water quality

Diagram

Diagram of process improvement suggestion system

MOLIT provides advanced operation & management model that significantly improves upon existing operation of sewerage/wastewater treatment facilities using self-developed techniques such as bioreactor optimal control technology and total phosphorus (T-P) optimal treatment technology.

Application Effect

Existing methods

Bioreactor process Management

  • Use of multiple measurement equipment, Reduced efficiency of operation & management
  • Unavailable individual process control, Reduction of energy efficiency

Total phosphorus (T-P) process management

  • Difficulty in calculating optimal chemical input according to water quality property
  • T-P meter lack of retreatment function deterioration of reliability of water quality data

Process improvement plan

Bioreactor integrated control Total-Solution

  • Measuring with one meter in one place,
    → Accurate and consistent measurement
  • Optimal process control per pond according to water quality and state
    → Efficient use of energy

Total phosphorus (T-P) optimal control technology

  • Real-time measurement of water quality properties using smart Jar-test technique
    → Decision of chemical input with 5-min unit
  • Using automatic pretreatment system and washing function, → Accurate measurement of phosphorus concentration

Customized operation & management by process state

Complying with legal discharge water quality

Water treatment facilities Increase of operational convenience

Reduction of operation and chemical costs