Magnetic field arrangement structure of high gradient magnetic separator for magnetic coagulation water treatment

Abstract

The invention discloses a magnetic field arrangement structure of a high-gradient magnetic separator for magnetic coagulation water treatment. The magnetic separator comprises: a plurality of permanent magnet main magnetic poles, permanent permanent magnetic auxiliary magnetic poles and arc iron plates; A plurality of the permanent magnet main poles are installed on the outer circumferential surface of the arc-shaped iron plate; they are evenly arranged along the circumferential direction; a permanent permanent magnet auxiliary pole is arranged between the adjacent two permanent permanent magnet main poles , both ends of the auxiliary magnetic pole are shorter than the main magnetic pole, and the polarity of the contact surface between the auxiliary magnetic pole and the main magnetic pole is the same as the polarity of the main magnetic pole outward; the magnetic field strength of the open magnetic separator is enhanced, and the traditional magnetic field is avoided. The magnetic field arrangement in the magnetic separator has the problems of magnetic leakage and magnetic loss. The high gradient magnetic separator made by the invention can be used for various industrial sewage and domestic sewage treatment, black and odorous river treatment, lake and river ground water purification, tap water precipitation process, seawater desalination pretreatment and the like.

Description

technical field [0001] The invention relates to the technical field of magnetic coagulation water treatment, in particular to a magnetic field arrangement structure of a high gradient magnetic separator used for magnetic coagulation water treatment. Background technique [0002] Magnetic coagulation is the addition of magnetic powder in the conventional coagulation process, and the magnetic powder is effectively combined with the coagulation floc. Due to the high density of the magnetic powder, the density of the coagulation floc is greatly increased, and the settling speed of the floc is accelerated. , the surface hydraulic load can reach 20-40m 3 / (m 2 h), much higher than 1-2m of conventional coagulation 3 / (m 2 h), at the same time, the quality of the effluent is good, which is comparable to that of ordinary quartz sand filtration. The effluent solid suspended solids SS < 5mg / L, turbidity < 1.0NTU, total phosphorus TP < 0.02mg / L, with excellent phosphorus rem...

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