Seed sludge preparing method and sludge processing method

A technology for sludge treatment and sludge, which is applied in the directions of sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of poor sludge dehydration treatment effect and achieve high activity Recovery rate, good acid resistance, effect of promoting enrichment

Pending Publication Date: 2019-04-16
光大水务(深圳)有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of seed sludge and a sludge

Method used

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  • Seed sludge preparing method and sludge processing method

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Effect test

Example Embodiment

[0021] The embodiment of the present invention provides a method for preparing seed mud, including the following steps:

[0022] S01. Obtain sludge and adjust the sludge to acidity;

[0023] S02. Enriching acidophilic bacteria in the sludge and performing aeration treatment to obtain seed sludge;

[0024] Wherein, in the seed mud, the relative abundance of the acidophilic flora is 25%-35%.

[0025] Specifically, in the above step S01, any sludge can be directly obtained, and the sludge can be adjusted to be acidic. In a preferred embodiment of the present invention, the acidic condition is weakly acidic, and the pH is 5.5 to 6.5 to ensure that The sludge reaction environment is weakly acidic, and its main functions are as follows: First, it can provide a good acidic environment for the sludge flora, enriching a large number of acidophilic bacteria; second, under acidic conditions, make filamentous Bacteria can grow in large numbers. At this time, filamentous bacteria become the domin...

Example Embodiment

[0046] Example 1

[0047] A method for preparing seed mud, the seed mud specifically includes the following steps:

[0048] Obtain sludge, adjust the sludge to acidity (pH=5.5); enrich acidophilic bacteria in the sludge to obtain sludge enriched with acidophilic flora; treat the sludge enriched with acidophilic bacteria The mud is directly subjected to aeration treatment, the aeration treatment time is 20 days, and the seed mud is obtained. The dissolved oxygen value of the seed mud is 5 mg / L; wherein, the content of the acidophilic bacteria in the seed mud is: The relative abundance of acidic flora is 25% to 35%.

[0049] A method for using the above sludge treatment, the method includes the following steps:

[0050] Obtain the sludge to be treated, adjust the sludge to be treated to be acidic, and obtain the acidic sludge to be treated with pH=5.5; inoculate 20% of the seed sludge prepared above into the acidic sludge to be treated with pH=5.5 and homogenize Mixing to obtain a fir...

Example Embodiment

[0051] Example 2

[0052] A method for preparing seed mud, the seed mud specifically includes the following steps:

[0053] Obtain sludge, adjust the sludge to acidity (pH=6.0); enrich acidophilic bacteria in the sludge to obtain sludge enriched with acidophilic bacteria; treat the sludge enriched with acidophilic bacteria The mud is directly subjected to aeration treatment, the aeration treatment time is 25 days, and the seed mud is obtained. The dissolved oxygen value of the seed mud is 5 mg / L; wherein, in the seed mud, the relative abundance of the acidophilic flora is 25% to 35%.

[0054] A method for using the above sludge treatment, the method includes the following steps:

[0055] Obtain the sludge to be treated, adjust the sludge to be treated to be acidic, and obtain an acidic sludge to be treated with pH=6.5; inoculate 20% of the seed sludge prepared above into the acidic sludge to be treated with pH=6.5 and homogenize Mixing to obtain a first mixture; performing aeration ...

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Abstract

The invention provides a seed sludge preparing method. Seed sludge is obtained by directly conducting aeration treatment on sludge with rich acidophilic florae on the surface, and the relative abundance of the acidophilic florae on the surface of the seed sludge is 25-35%. The invention further provides a method for processing and dewatering sludge through the seed sludge. The processed sludge hasthe water content lower than 65%. The seed sludge has the good acid resistance and high active recovery rate. When the seed sludge is inoculated to a new sludge environment, the reaction can rapidlyhappen, extra-cellular polymeric substances (EPS) in the sludge system and polysaccharides in cell walls are rapidly consumed, the content and viscosity of sludge organic matter are reduced, the better sludge dewatering effect is achieved, and the sludge settling performance is improved.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a method for preparing seed sludge and a sludge treatment method. Background technique [0002] With the continuous development of my country's economy and the continuous improvement of urbanization, the amount of sewage is also increasing. It is predicted that by 2020 it will reach 53.6 billion m 3 / d. Sludge is the product of sewage treatment. Its main characteristics are high water content (up to 99%), high content of organic matter, easy to rot and smell, and fine particles, small specific gravity, colloidal liquid, difficult to solidify. liquid separation. [0003] With the increase in the amount of sewage and the promotion and development of wastewater treatment technology, the amount of sludge produced is increasing, and the types and properties are more complex. Toxic and harmful substances in wastewater are often concentrated in sludge, so sludge is one of the most ser...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/12C02F11/00C02F11/143
CPCC02F3/12C02F3/34C02F3/348C02F11/14C02F2209/06Y02W10/10
Inventor 石伟于豹王冠平刘晓静赵晓峰赵立春荣颖慧
Owner 光大水务(深圳)有限公司
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