Treating and recycling device for wastewater from iron and steel enterprises and technique

Abstract

The invention provides a treating and recycling device for wastewater from iron and steel enterprises and a technique. The treating and recycling device comprises a grille, a regulating tank, a flocculation and water distribution structure, a high-density sedimentation tank, a sludge storage tank, a V-shaped filter, a Fenton oxidation reaction tank, a reactive precipitation tank, a multi-media filter device, a CMF (continuous membrane filtration) device, an activated carbon filter device, a reverse osmosis device and a reverse osmosis product water tank. The defects of refractory organic matter, high treatment cost, high difficulty, low efficiency and the like of the traditional treatment process are overcome with efforts, recycling of the wastewater from the iron and steel enterprises is realized, the wastewater treatment ratio reaches 100%, the recycling ratio of the treated wastewater reaches 100%, the reusing ratio of produced water reaches 98.1%, urban recycled water is taken as the unique water source for production water replenishing, scramble for groundwater resources against citizens is avoided, and unique circular economy advantages are realized. Based on long-term analysis, not only can wastewater treatment cost be reduced, but also high efficiency and economic performance of wastewater treatment are realized with adoption of the technique.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection for industrial wastewater treatment. More specifically, for iron ions, oils, solid impurities and other wastes and sludge associated with the iron and steel industry, it is a treatment device for recycling industrial wastewater. Background technique [0002] The main methods currently available for wastewater treatment in the iron and steel industry are classified as follows: [0003] Iron and steel industry wastewater treatment processes mainly include flocculation precipitation method, biodegradation method, active precipitation method, electrolysis treatment and ion exchange method. In recent years, "zero discharge" of wastewater has been mentioned more and more frequently in the industrial field, and it has also become an important indicator in the planning review of various industries. With the progress of research, the use of membrane separation methods has been widely implemented...

AI Technical Summary

Problems solved by technology

Efforts have been made to overcome the shortcomings of traditional treatment processes such as refractory organic matter degradation, high treatment costs, high difficulty, and low efficiency, and have realized the recycling and reuse of wastewater from the iron and steel industry. The wastewater treatment rate has reached 100%, and the recycling rate of treated wastewater has reached 100%. Production The water reuse rate is 98.1%, which realizes the use of urban reclaimed water as the only water source for production and replenishment, and no longer competes with citizens for groundwater resources. It has a unique circular economy advantage

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