Solution

A petrochemical enterprise encountered abnormal operation of its reverse osmosis (RO) system triggered by fluctuating quality of incoming raw water. Unstable raw water quality frequently caused sharp rises in system operating pressure and excessive inter-stage differential pressure, which in turn led to a steady decline in salt rejection rate and a drastic surge in produced water conductivity, posing severe risks to the continuity of production operations.

Operation & Maintenance Support by Prio

Our engineering team carried out real-time monitoring of key operational parameters and dynamically adjusted operating strategies. Targeted cleaning regimens were adopted in accordance with specific fouling types; meanwhile, the pH value of cleaning solutions was precisely regulated, cleaning duration was extended, and immersion cleaning was implemented to guarantee thorough cleaning efficacy and restore membrane flux.

Following systematic operation and maintenance optimization, the water production capacity of the reverse osmosis system recovered to 98% of its initial commissioning level. The operating differential pressure was stabilized below 0.2 MPa, and the cleaning cycle was prolonged. These measures effectively secured stable and uninterrupted production for the enterprise.

A leading iron and steel enterprise was confronted with dual problems of severe scaling and subsequent equipment corrosion in its circulating cooling water system. These issues brought about deteriorated heat transfer efficiency of heat exchangers, elevated risks of local pipeline corrosion perforation, increased system pressure loss and rising energy consumption, calling for professional technical support to guarantee stable system operation.

Operation and Maintenance Service Provided by Prio

We deliver integrated operation and maintenance services integrating technology, management and on-site execution, which specifically include:

1. Refined water quality management: Combine on-site water quality monitoring with precise laboratory analysis to strictly control concentration cycles, Langelier Saturation Index (LSI), Ryznar Stability Index (RSI) and concentrations of key ions.

2. Precise dosing regulation supported by data models: Calculate and automatically adjust the dosing concentration and dosing cycle of corrosion inhibitors, scale inhibitors, dispersants, oxidizing and non-oxidizing biocides, so as to realize high efficiency, low consumption and accurate dosing of chemicals.

3. Operational optimization as well as water conservation and emission reduction: Optimize blowdown strategies and automatic control systems, and raise the concentration cycle on the premise of stable water quality with qualified anti-corrosion and anti-scaling performance.

An alumina manufacturer suffered accelerated scaling in the evaporation section and excessive foaming in precipitation tanks due to high impurity contents in raw materials, which adversely affected overall production efficiency.

Operation and Maintenance Support by Prio

Aiming at the strong alkaline and high-temperature working conditions of the production process, we leveraged our independent R&D strengths by assigning a dedicated R&D team to develop customized special scale inhibitors, dispersants and defoamers tailored for the customer’s working scenario. This solution cut extra costs incurred by low production efficiency and equipment malfunctions, delivering reliable support for stable project operation.