Active sludge adsorption bed design method

A technology for activated sludge adsorption and design methods, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve problems such as failure, reduce organic matter content, better absorb organic matter, The effect of improving the B/C ratio

Active Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the invention patent uses the method of active pool and charcoal-filled adsorption bed to treat cooking fume, because charcoal itself has certain adsorption properties, it will become invalid after long-term use and needs to be replaced.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] See Table 1 for the treatment effect of a certain petrochemical wastewater using the activated sludge adsorption bed of the present invention.

[0060] Table 1

[0061]

[0062] *: B / C increase rate.

[0063] 1. The sludge adsorption bed is 12 meters high and 10 meters in diameter. The adsorption layer (sludge adsorption layer) in the sludge adsorption bed is equipped with a 2-meter-high soft filler, and the bottom of the filler is 6 meters away from the bottom of the sludge adsorption bed. The upper separation layer (mud-water separation layer) is equipped with inclined pipe packing with a height of 1.0 meters.

[0064] The mass (grams) of the soft filler is 1.5g per bundle, the diameter is 120mm, the vertical spacing (assembly distance) is 60mm, and the left and right spacing of each filler is 150mm.

[0065] 2. After aerobic biological treatment, the remaining sludge in the secondary sedimentation tank enters intermittently from about 5 meters in the middle of ...

Embodiment 2

[0078] See Table 2 for the treatment effect of a certain chemical industry wastewater using the activated sludge adsorption bed of the present invention.

[0079] Table 2

[0080]

[0081] *: B / C increase rate.

[0082] 1. The size of the sludge adsorption bed is 30 x 20 x 5 meters in length x width x height, divided into 2 grids. The adsorption layer is equipped with a 2-meter-high soft filler, and the bottom of the filler is 3.0 meters away from the bottom of the sludge adsorption bed. Water overflows.

[0083] The mass (grams) of the soft filler is not less than 1.5g per bundle, the diameter is 150mm, the vertical distance is 60mm, and the left and right distance between each filler is 180mm.

[0084] 2. After aerobic biological treatment, the remaining sludge in the secondary sedimentation tank enters intermittently from about 3 meters in the middle of the sludge adsorption bed, 1-2 times a day, with a flow rate of 80 meters 3 / Time.

[0085] The diameter of the mu...

Embodiment 3

[0096] See Table 3 for the treatment effect of a certain chemical industry wastewater using the activated sludge adsorption bed of the present invention.

[0097] table 3

[0098]

[0099] *: B / C increase rate.

[0100] 1. The sludge adsorption bed is 8 meters high and 12 meters in diameter. The sludge adsorption bed is equipped with a 2-meter-high soft filler, and the bottom of the filler is 4 meters from the bottom of the sludge adsorption bed. The upper part of the sludge adsorption bed is equipped with sloping plate packing with a height of 1 meter.

[0101] The mass (grams) of the soft filler is 1.5g per bundle, with a diameter of 120mm, an upper and lower spacing of 60mm, and a left and right spacing of each filler of 150mm.

[0102] 2. After aerobic biological treatment, the remaining sludge in the secondary sedimentation tank enters intermittently from about 5 meters in the middle of the sludge adsorption bed, 3 times a day, with a flow rate of 20 meters 3 / Time...

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Abstract

The present invention relates to the technical field of organic wastewater treatment, particularly to an active sludge adsorption bed design method. According to the design method, a water distribution pipe is arranged on the bottom portion of an active sludge adsorption bed; the bottom portion of the active sludge adsorption bed is a mud-water mixing layer; the water distribution pipe is positioned on the lower portion of the mud-water mixing layer; a biological active sludge discharge and self-reflux system is arranged inside the mud-water mixing layer, wherein the biological sludge discharge and self-reflux system comprises a mud suction pipe and a reflux pipe; the upper portion of the mud-water mixing layer is a sludge adsorption layer, and a filler is loaded in the sludge adsorption layer; a biological sludge inlet pipe is positioned on the upper portion of the sludge adsorption layer; and a mud-water separation layer is arranged above the biological sludge inlet pipe, and a filler is loaded in the mud-water separation layer. According to the present invention, the aerobic sludge sedimentation tank remaining sludge enters the active sludge adsorption bed, and the adsorption effect of the remaining active sludge is used to make the remaining sludge be adsorbed and bring out the partial organic matter in the sewage.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to a design method of an activated sludge adsorption bed. Background technique [0002] In response to the increasingly serious water pollution in our country, the sewage discharge standards have been continuously tightened. The COD and ammonia nitrogen in the sewage discharge standards of some places have been strictly reduced to below 50mg / L and 8mg / L respectively, and the total nitrogen standards have been strictly reduced to below 15mg / L. Continuously stringent sewage discharge standards have put forward higher requirements for the depth of sewage treatment. [0003] Due to the advantages of strong adaptability and good effect, the microbial method is still the main method in sewage treatment. In the process of microbial treatment of organic wastewater, microorganisms will eventually convert organic matter into carbon dioxide and water through steps such as...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 刘正龚小芝赵辉
Owner CHINA PETROLEUM & CHEM CORP
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