Industrial Wastewater Treatment Technology in Steel Enterprises

The industrial sewage treatment system mainly includes several major treatment units: primary sedimentation tank, adjustment tank, chemical reaction tank, microfiltration tank, and membrane treatment system.

Industrial Wastewater Treatment Technology in Steel Enterprises

The main function of the primary sedimentation adjustment tank is to adjust the quantity and quality of the incoming water. Most of the suspended solids in the sewage can be removed through the primary sedimentation tank, and a small part of the high-valent ion precipitation can also be removed.

In addition, in the case of intermittent production of wastewater, the primary sedimentation tank and the adjustment tank can also play a role in regulating the amount of sewage water, creating favorable conditions for the continuity and stability of equipment operation in the sewage treatment system.

The wastewater after the primary sedimentation adjustment tank enters the subsequent oxidation reaction tank for treatment. The oxidation reaction tank also contains a plurality of treatment units, such as neutralization reaction device, oxidation reaction device, flocculation reaction device and so on.

After the wastewater undergoes oxidation reaction, most of the organic matter and reducing substances are taken out, and then enters the subsequent secondary sedimentation tank for precipitation and separation, and the precipitate produced in the previous reaction process is taken out.

The supernatant liquid from the secondary sedimentation tank enters the filter membrane system for advanced treatment. Most of the suspended solids and colloidal impurities in the influent can be removed through the microporous filter membrane, and the wastewater is further purified. After the microporous filter membrane treatment The effluent can meet the influent requirements of the subsequent reverse osmosis treatment device, the SDI value is lower than 5, the SS value is lower than 5mg/L, and the turbidity is lower than 1NTU. Before entering the reverse osmosis system for treatment, adjust the pH of the influent water to stabilize it between 6.5 and 7. At the same time, add a scale inhibitor to prevent scale production, and add sodium bisulfite to prevent the membrane material of the reverse osmosis system from being damaged. The water is oxidized to prolong the service life, and then the water is sent to the reverse osmosis system through the water pump. After the reverse osmosis system treatment, the organic matter, microorganisms and fine suspended particles in the water will be removed to realize the purification of sewage.


In terms of sewage treatment system, the enterprise has formulated perfect management regulations and contents according to the actual situation of daily production sewage management. Decompose the sewage treatment tasks and goals at each stage, and urge the sewage treatment tasks to meet the standards within the specified time by specifying the specific responsible person and strictly controlling the time and process nodes. The environmental protection technical department has compiled a sewage monitoring plan and an environmental monitoring plan, and formulated a daily supervision post work process and business instruction manual for the sewage treatment work, which can be used for reference by all relevant departments and staff, to improve the human error rate and improve the quality of sewage management work.

By improving the organizational structure, improving the sewage management system, and clarifying job responsibilities, a complete sewage treatment management system has been formed to ensure the successful realization of the enterprise sewage treatment tasks and goals.

Industrial Wastewater Treatment Technology in Steel Enterprises-3

Post time: Aug-25-2022