Acceptance of the water treatment reform project for the electrochemical cycle at Shenhua Bayan Methanol Plant, Naoer Energy

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Acceptance of the Electrochemical Circulating Water Treatment Improvement Project at Shenhua Bayannur Energy Methanol Plant / Author/Source: Sinochem News Network / Date: 2019-08-01 / Clicks: 13. On July 29, the electrochemical circulating water treatment improvement project at the methanol plant of Shenhua Bayannur Energy Co., Ltd. successfully passed its annual acceptance inspection. The project utilizes the fully automatic electrochemical circulating water treatment system provided by Jiangsu Runju Environmental Protection Technology Co., Ltd.; it has been in operation for over 1 year now, and all water quality parameters of the circulating cooling water system meet the requirements specified in the agreement. On-site monitoring data and CMA water quality test reports show that this system is effective in removing scaling ions from the circulating water system; the calcium hardness (expressed as calcium carbonate) remains below 350 mg/L, and the concentration multiplier is increased to 4 times. Economic benefit analysis shows that the dosage of corrosion and scale inhibitors was reduced by 50%, the amount of water required to replenish the circulating water was cut by 30%, and the volume of wastewater discharged was reduced by 60%. This results in an annual savings of 233,800 cubic meters of water, 19.9 tons of chemicals, and nearly one million yuan in direct costs, bringing significant economic and environmental benefits to the methanol plant. It is reported that due to factors such as the external environment and process conditions, the circulating cooling water system of Shenhua Baimeng Methanol Plant has a concentration ratio (based on potassium ions) of around 2. The concentrations of scaling ions in the circulating water and make-up water are 586 mg/L and 122 mg/L respectively; a significant amount of scale accumulates on the surface of the heat exchangers, which affects their heat exchange efficiency. Shenhua Baimeng Methanol Plant attempted to address the aforementioned issues by adding corrosion and scale inhibition agents, increasing water supply volumes, and discharging wastewater, but these measures did not yield satisfactory results. In response to **environmental protection policies and in line with its own needs, Shenhua Baimeng Methanol Plant introduced a fully automatic electrochemical circulating water treatment system from Jiangsu Runju Environmental Protection Technology Co., Ltd. last June, to upgrade its circulating cooling water system.