Environment-friendly steel mill wastewater treatment method

Abstract

The invention relates to the technical field of wastewater treatment, and in particular, relates to an environment-friendly steel mill wastewater treatment method. Wastewater treatment equipment is used in the method. The wastewater treatment equipment is used for carrying out environment-friendly treatment on steel mill wastewater, and environment-friendly treatment comprises a plurality of processes of precipitation treatment, sewage discharge, precipitate discharge and the like; the wastewater treatment equipment is connected with a butterfly valve and a spiral conveyor by utilizing a metalripple compensator; the two ends of the spiral conveyor penetrate through a first limiting groove and a second limiting groove correspondingly; a handle is used for rotating an adjusting screw rod; the adjusting screw rod drives the end, provided with a motor, of the spiral conveyor to move upwards through a traction rope. The inclination angle of the spiral conveyor can be adjusted conveniently,the end, provided with the motor, of the spiral conveyor can be warped upwards conveniently, the requirement for waterproofness of the end, provided with the motor, of the spiral conveyor is lowered,reduction of the production cost is facilitated, the replacement frequency of waterproof parts is reduced, and management is facilitated.

Description

technical field [0001] The invention relates to an environment-friendly treatment method for waste water in steelworks, and belongs to the technical field of waste water treatment. Background technique [0002] Cooling water accounts for the largest proportion in metallurgical wastewater. Cooling water indirect cooling water and direct cooling water. Indirect cooling water, without other pollution, can be recycled after cooling; direct cooling water, such as rolling mill roll and roller table cooling water, metal ingot cooling water, etc., due to contact with products, not only the water temperature rises after use, The water also contains oil, iron oxide scale and other substances. If it is discharged outside, it will cause siltation and heat pollution to the water body, and the oil slick will harm aquatic organisms. The environmental protection treatment of steel plant wastewater has great significance on the impact on the ecological environment. In the process of enviro...

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Problems solved by technology

[0003]Sedimentation in the sedimentation tank is one of the main processes of metallurgical wastewater treatment. At present, the screw conveyor is often used to discharge the sediment in the sedimentation tank, but the installation position of the screw conveyor is fixed , most of them are in a horizontal state, and the waterproof requirement for the end of the screw conveyor where the motor is installed is relatively high, which not only increases the cost, but also needs to replace the waterproof structure at the end of the screw conveyor where the motor is installed, which is inconvenient to manage

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