Друга черга онлайн моніторингу технологічного процесу очищення промстоків мхп

Phase 2 of the online monitoring system for the industrial wastewater treatment process has been successfully implemented. The treatment capacity of the second phase is up to 4,500 m³/day.

The existing wastewater treatment facilities have been in operation for more than 10 years. Hydraulic loading and COD loading have increased by 30% compared to the original design parameters, which were based on a hydraulic capacity of 5,200 m³/day. The DAF system continued to perform satisfactorily; however, the SBR system was operating at the limits of its design capacity. To ensure compliance with the design parameters under increasing process loads, the following concept was implemented:

• A new stainless steel (SS) air distribution system equipped with fine-bubble diffusers.
• To support the nitrification/denitrification process, the range of online monitoring parameters was expanded to include five key indicators: dissolved oxygen (DO), pH, oxidation-reduction potential (ORP), NH₄⁺, and NO₃⁻.

BEFORE RECONSTRUCTION

• Hydraulic load: 6,500–7,000 m³/day
• COD load: 11,500–12,800 kg/day
• Influent COD: 1,600–2,500 mg/L
• Energy consumption: 0.9–1.2 kWh/kg COD
• Online monitoring parameters: dissolved oxygen (DO)

RECONSTRUCTION

• Modernization of the aeration system: stainless steel air distribution system equipped with fine-bubble diffusers.
• Upgrade of the online monitoring system.
• New mounting and maintenance equipment for sensors, including the design and installation of 4-meter sensor support structures.

AFTER RECONSTRUCTION

• Hydraulic load: 7,800–8,400 m³/day
• COD load: 13,800–15,360 kg/day
• Influent COD: 1,600–2,500 mg/L
• Energy consumption: 0.6–0.75 kWh/kg COD
• Online monitoring parameters: dissolved oxygen (DO), pH, oxidation-reduction potential (ORP), NH₄⁺, NO₃⁻.

ONLINE PROCESS MONITORING SYSTEM ТЕХНОЛОГІЧНОГО ПРОЦЕСУ

Data acquisition, processing, and transmission system:

Information acquisition and processing cabinet based on the Siemens SIMATIC S7-1200 controller; workstation with a database archive and Siemens SIMATIC WinCC software.

CHEMITEC analyzer and ISE probes.

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