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A kind of storage method of aerobic granular sludge

A technology of aerobic granular sludge and storage method, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as damage to cell structure, instability, etc. The effect of process simplification

Active Publication Date: 2022-02-22
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] For this reason, the embodiment of the present invention provides an aerobic granular sludge storage method to solve the problem of damaged cells and resurrection (recovery) caused by the dehydration of granular cells caused by the air circulation at different temperatures alone in the existing dry storage mode. The problem of structural instability after

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  • A kind of storage method of aerobic granular sludge
  • A kind of storage method of aerobic granular sludge
  • A kind of storage method of aerobic granular sludge

Examples

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Effect test

Embodiment 1

[0051] The storage method of the aerobic granular sludge of the present embodiment comprises the following steps:

[0052] 1) After the fresh aerobic granular sludge (AGS) is completely settled, remove the supernatant, wash it twice with still water, and then transfer it to an aqueous solution of acetone with a mass concentration of 15%. Shake well under conditions for 1.5 hours, let stand for 8 minutes, and select complete AGS;

[0053] 2) Transfer the AGS obtained in step 1) to an aqueous solution of acetone with a mass concentration of 55%, shake it for 2 hours at a speed of 40 rpm, and shake it at 29±1° C., and let it stand for 4 minutes to select the complete AGS;

[0054] 3) Transfer the AGS obtained in step 2) to an aqueous acetone solution with a mass concentration of 85%, shake it evenly for 2 hours under the condition of a shaking table with a rotation speed of 40 rpm and 29±1° C., and let it stand for 5 minutes to select the complete AGS;

[0055] 4) Transfer the A...

Embodiment 2

[0058] The storage method of the aerobic granular sludge of the present embodiment comprises the following steps:

[0059] 1) After the fresh aerobic granular sludge (AGS) is completely settled, remove the supernatant, wash it with static water for 3 times, and then transfer it to an aqueous solution of acetone with a mass concentration of 20%. Shake well for 2 hours under the same conditions, let it stand for 5 minutes, and select the complete AGS;

[0060] 2) Transfer the AGS obtained in step 1) to an aqueous acetone solution with a mass concentration of 60%, shake it evenly for 5 hours at a rotating speed of 50 rpm and a shaker at 29±1° C., let it stand for 5 minutes, and select the complete AGS;

[0061] 3) Transfer the AGS obtained in step 2) to an aqueous acetone solution with a mass concentration of 80%, shake it evenly for 2 hours under the condition of a shaking table at a rotation speed of 50 rpm and 29±1° C., and let it stand for 5 minutes to select the complete AGS...

Embodiment 3

[0065] The storage method of the aerobic granular sludge of the present embodiment comprises the following steps:

[0066] 1) After the fresh aerobic granular sludge (AGS) is completely settled, remove the supernatant, wash it with static water for 3 times, and then transfer it to an aqueous solution of acetone with a mass concentration of 20%. Shake well for 2.5 hours under the same conditions, let it stand for 8 minutes, and select the complete AGS;

[0067] 2) Transfer the AGS obtained in step 1) to an aqueous solution of acetone with a mass concentration of 70%, shake it evenly for 2.5 hours under the condition of a shaker at a rotation speed of 60 rpm and 29±1° C., let it stand for 8 minutes, and select the complete AGS;

[0068] 3) Transfer the AGS obtained in step 2) to an aqueous solution of acetone with a mass concentration of 80%, shake it evenly for 1.5 hours at a speed of 40 rpm and a shaker at 29±1°C, and let it stand for 5 minutes to select the complete AGS;

[...

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Abstract

The embodiment of the invention discloses a method for storing aerobic granular sludge, which relates to the technical field of biological materials. The present invention adopts acetone aqueous solution to infiltrate the shaker with multiple gradients from low to high for the aerobic granular sludge to achieve the purpose of dehydration and drying. The inventor innovatively uses acetone to infiltrate and shake the bed to mix, which effectively solves the shortcomings of uneven dehydration in the existing aerobic granular sludge dry storage method. This method can protect microbial cells at different levels in similar levels. With a similar dehydration rate, it can effectively reduce the large structural damage of cells during drying and storage, and maintain the original state of the particles to a greater extent. Compared with the existing particle drying method, the present invention has simpler process.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of biological materials, in particular to a method for storing aerobic granular sludge. Background technique [0002] Aerobic granules sludge (AGS) is a microbial self-coagulation process formed spontaneously under aerobic conditions. It is a special biofilm with regular and compact structure, fast settling speed, high toxicity resistance, The engineering practice shows that the emergence of AGS effectively solves the disadvantages of the traditional biological sewage treatment technology, such as large area and difficult disposal of residual sludge. It is considered to be a new generation of wastewater with great engineering potential. biological treatment technology. [0003] Aerobic granular sludge technology has been developed for nearly 30 years as a new technology to replace traditional sewage treatment. Storage of idle granular sludge to quickly start the reactor and maintai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14C02F3/12C02F11/121
CPCC02F3/1205C02F11/121C02F11/14Y02W10/10
Inventor 吕毅
Owner SHANDONG NORMAL UNIV
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