CN2272439Y - Aerobic phase separation type fluidizing reactor - Google Patents

Abstract

The utility model discloses an aerobic phase separation type fluidizing reactor which is composed of a water distributing pipe, a gas distributing perforated pipe, a filtering layer, a rising deflector, a solid-liquid separator, a gas phase separator and carrier granules. The reactor has the obvious advantage of a high biologic content, easy separation of the carrier granules and impact load resistance, and therefore, the utility model is especially suitable for treating high concentrated organic wastewater.

Description

Aerobic phase seperated fluidized reactor

The utility model relates to the biological fluidized bed of field of waste water treatment, and biological fluidized bed is a kind of wastewater treatment equipment that grows up nineteen seventies, and it is made up of the reactor that tiny carrier granule is housed.Because the carrier granule apposition growth has a large amount of microorganisms, microorganism concn can reach 5～10 times of conventional activated sludge process, thereby has occupation of land less, efficient height, the advantage of reduced investment.But biological fluidized bed in actual use, because device contains a large amount of microorganisms and the carrier fluidised form is restive, thereby it is inhomogeneous oxygen supply to have occurred, and the shortcoming that carrier is easy to run off has influenced the stability of disposing waste water by biological fluidized bed.

The purpose of this utility model is at the existing shortcoming of above-mentioned organism fluidization bed apparatus, provides a kind of water distribution, gas distribution even, and oxygen-transfer efficiency height and carrier fluid stable are difficult for the aerobic phase seperated fluidized reactor that runs off.

The purpose of this utility model is to realize like this, the utility model is shown in figure (1), and it is by water distributor (1), gas distribution perforated pipe (2), filtering layer (3), rising director (4), admittedly annotate separator (5), gas phase separator (6) is formed, this device is divided into upwelling district (9), katabatic drainage district (10), gas phase separation district (11), settling section (12).The distribute water and air system arranges that by shown in the figure (2) gas distribution perforated pipe (2) is on water distributor (1) top.Waste water is introduced from bottom of device by water distributor (1).Air is introduced by gas distribution perforated pipe (2), perforated pipe (2) through evenly arranging discharges, and waste water passes filtering layer (3) and upwards flows under the drive of air, waste water contacts with carrier granule (7) thorough mixing in rising director (4), and organic pollutant obtains degraded.Top at reactor, because open area progressively amplifies, upflow velocity slows down, mixed solution refluxes (in a direction indicated by the arrow) with the slit that rising director (4) forms through slit and the solid-liquid separator (5) that gas phase separator (6) and solid-liquid separator (5) form, and air is overflowed from mixed solution in gas phase separation district (11).In settling section (12), because carrier granule is heavy fast greater than upflow velocity event carrier granule and liquid separation, supernatant liquor upwards flows into water leg (8) and discharges.Carrier granule is back to bottom of device through rising director (4) and the slit that the device outer wall forms, and comes back to upwelling district (9) under the drive of mixed solution, thereby forms reciprocation cycle.For making gas distribution, water distribution even, carrier granule forms stable circulation, and solid, liquid, gas three can in time separate mutually, and the utility model should guarantee adding man-hour: 1. filtering layer (3) is made up of grating stone, and the grating particle diameter is 58mm to 5mm.2. the long-pending ratio of the overflow section in upwelling district (9) and katabatic drainage district (10) is 2: 1 to 2.5: 1.3. the long-pending ratio scope of the overflow section of rising director (4), solid-liquid separator (5) and gas phase separator (6) is between 1: 1.5: 2.3 to 1: 1.8: 2.5.4. carrier granule (7) diameter is 0.1 millimeter to 0.5 millimeter a haydite.

The settling section hydraulic load is by " water supply and drainage design manual " second pond standard design.

The utility model in use its biomass can reach 20～40g/L, the settling velocity of carrier granule can reach 10m/h, thereby this device has biological content height, and carrier granule is easily separated, the obvious advantage of withstand shock load is specially adapted to handle high concentration organic sewage.

Claims (4)

1, a kind of aerobic phase seperated fluidized reactor, it is characterized in that water distributor (1) being set in aerobic phase seperated fluidized reactor bottom, gas distribution perforated pipe (2) and filtering layer (3), the middle part is provided with rising thrust-augmenting nozzle (4), and top is provided with solid-liquid separator (5) and gas phase separator (6).

2, by the aerobic phase seperated fluidized reactor of claim (1) regulation, it is characterized in that filtering layer is made up of equally distributed grating stone, the grating particle diameter is 58mm to 5mm.

By the aerobic phase seperated fluidized reactor of claim (1) regulation, it is characterized in that 3, the long-pending ratio scope of the overflow section in upwelling district (9) and katabatic drainage district (10) is 2: 1 to 2.5: 1.

4, by the aerobic phase seperated fluidized reactor of claim (1) regulation, the long-pending ratio scope of overflow section of it is characterized in that rising director (4) and solid-liquid separator (5) and gas phase separator (6) is between 1: 1.5: 2.3 to 1: 1.8: 2.5.

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