Magnetic internally-circulating fluidized bed adsorber

Abstract

The invention discloses a magnetic internally-circulating fluidized bed adsorber; a water inlet pipe is arranged in the center of the bottom of a cone; an adsorbent discharge pipe is arranged at one side of the water inlet pipe at the bottom of the cone; the upper edge of an inner guide cylinder and the upper edge of the cone are arranged on the same plane; the upper edge of a middle cylinder body and the bottom of a water collection tank are arranged on the same plane; the inner guide cylinder is fixedly connected with the cone; the middle cylinder body, an outer guide cylinder and an inclined plate are fixedly connected with a cylinder body; a piece of magnet is arranged in a ring groove embedded in the cylinder body; an overflow weir is arranged at the upper edge of the inner side of the water collection groove; a water outlet pipe is arranged at the periphery of the water collection groove and is parallel to the water level; a motor is arranged just above the magnetic internally-circulating fluidized bed adsorber by a bracket; a stirring paddle is connected with the motor by a coupler; and the stirring paddle is arranged on the center line of the magnetic internally-circulating fluidized bed adsorber. The magnetic internally-circulating fluidized bed adsorber is convenient to operate, little in adsorbent consumption, low in energy consumption and high in adsorption efficiency.

Description

technical field [0001] The invention belongs to the field of sewage adsorption treatment, in particular to a magnetic internal circulating fluidized bed adsorber. Background technique [0002] The heavy metals and refractory organic substances contained in many industrial wastewaters are difficult or impossible to remove by conventional biological methods, and these substances can be removed by adsorption methods. [0003] The commonly used adsorption equipment for wastewater treatment by adsorption method includes fixed bed and fluidized bed. At present, most of the adsorbents used for water treatment are granular, such as activated carbon, sulfonated coal, etc., and the adsorbers used are traditional fixed-bed adsorbers. The fixed bed adsorber is to fix the adsorbent on a certain part and carry out the adsorption operation when it is still. Most of them are cylindrical equipment. Pollutants in the adsorbent are adsorbed on the adsorbent. The fixed bed adsorber has the f...

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Problems solved by technology

The fixed bed adsorber has the following disadvantages: (1) Intermittent operation requires backup equipment, that is, when a part of the adsorber is adsorbed, another part of the adsorbent is regenerated; (2) In order to ensure water outlet, the height of the adsorption area must have a certain margin , need to place more adsorbent than the actual; (3) For a thicker bed, the pressure loss is large, and the energy consumption is high; (4) The adsorbent needs to be shaped into particles, so that the specific surface area decreases and the adsorption efficiency decreases

However, for fine particle adsorbents, it is difficult to achieve solid-liquid separation in a fluidized bed, which limits the application of some adsorbents (such as powdered activated carbon) with small particles, large specific surface area, fast adsorption rate, and high capacity. In adsorption, precipitation and other processes, there are often contradictions between the pursuit of high efficiency and solid-liquid separation

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