Method for preparing microporous adsorbent from sludge, product and special equipment

A microporous adsorbent and sludge technology, applied in the field of skeleton, can solve the problems of decolorization rate and heavy metal removal rate, far poor specific surface area adsorption effect, limited commercial application range, low product added value, etc., and achieve good mechanical strength. , the effect of long service life and low manufacturing cost

Inactive Publication Date: 2012-05-02
SOUTH CHINA REBORN RESOURCES ZHONGSHAN
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  • Claims
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AI Technical Summary

Problems solved by technology

Sewage treatment is an important project in environmental governance. Sewage treatment includes the treatment of sewage itself and the treatment of sludge in sewage. In the current technology, sludge treatment is to concentrate, stabilize, dry or In the process of incineration, at present, sludge is also used to make ceramsite or adsorption sand, but these products have a small range of applicability, and their decolorization rate, heavy metal removal rate, specific surface area, and adsorption effect are far worse than ordinary commercial activated carbon. The manufacturing method is basically completed by high-temperature carbonization of sludge, chemical activation and physical activation, and the added value of the product is low, and the scope of commercial application is limited
At the same time, the current treatment of microorganisms in sludge in the world is only selective utilization, and the process is cumbersome and technically demanding.

Method used

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  • Method for preparing microporous adsorbent from sludge, product and special equipment
  • Method for preparing microporous adsorbent from sludge, product and special equipment
  • Method for preparing microporous adsorbent from sludge, product and special equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Embodiment one: the method comprises the following steps:

[0072] A. The sludge with a water content of 10% (the specific water content of the sludge can be determined according to its specific conditions) is used as a raw material, put into an ozone processor to artificially inactivate microorganisms, and perform oxidation treatment. The treatment process is at room temperature Under normal pressure, the ozone concentration generated by the ozone generator is 5g / L, the ozone flow rate is 8L / min, and the reaction time is 15min. collection and processing;

[0073] B. Send the sludge that has been artificially inactivated into the primary solidification equipment, add calcium oxide accounting for 5% of the sludge weight, and mix it evenly with the sludge. The mixing time is 20 minutes;

[0074] C. The mixed sludge is released from the discharge port and directly sent to the pyrolysis reactor at a feed rate of 20kg per minute. When the sludge enters the pyrolysis reactor...

Embodiment 2

[0081] Embodiment two: the method comprises the following steps:

[0082] A. The sludge with a water content of 20% (the water content of the sludge can be determined according to its specific conditions) is used as a raw material, and it is put into an ozone processor for artificial forced inactivation of microorganisms and oxidation treatment. The treatment process is at room temperature Under normal pressure, the ozone concentration generated by the ozone generator is 7 g / L, the ozone flow rate is 5L / min, and the reaction time is 16 minutes. The oxidation method adopts top-down contact with ozone in reverse circulation, and the generated ozone tail gas is collected by ozone Equipment collection and processing;

[0083] B. Send the sludge that has been artificially inactivated into the primary solidification equipment, add calcium oxide accounting for 10% of the sludge weight, and mix it evenly with the sludge. The mixing time is 21 minutes;

[0084] C. The mixed sludge is ...

Embodiment 3

[0091] Embodiment three: the method comprises the following steps:

[0092] A. Sludge with a water content of 35% (the water content of the sludge can be determined according to its specific conditions) is used as a raw material, put into an ozone processor to artificially inactivate microorganisms, and perform oxidation treatment. The treatment process is at room temperature Under normal pressure, the ozone concentration generated by the ozone generator is 9 g / L, the ozone flow rate is 6.5L / min, and the reaction time is 18 minutes. Collection and processing of collection equipment;

[0093] B. Send the sludge that has been artificially inactivated into the primary solidification equipment, add calcium oxide accounting for 15% of the sludge weight, and mix it evenly with the sludge. The mixing time is 23 minutes;

[0094] C. The mixed sludge is released from the discharge port and directly sent to the pyrolysis reactor at a feed rate of 50kg per minute. When the sludge enters...

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Abstract

The invention discloses a method for preparing a microporous adsorbent from sludge, a product and special equipment. The microporous adsorbent is prepared from microorganism individuals which naturally survive in urban sludge and serve as a pore-forming agent (or named a pore-forming module), and a multi-purpose hybrid charged adsorbent is prepared by using the adsorbent as a nucleus and adding an outer layer of which the framework is a polar nanoscale porous material. The nucleus of a composite material is a nonpolar adsorbent, and a polar adsorbent is adhered to the outer layer of the composite material; the material has high mechanical strength, long service life and wide pore size distribution, has high adsorption capacity and adsorption rate for various inorganic and organic gases, and organic substances, heavy metal ions and the like in an aqueous solution, and is widely applied, low in manufacturing cost and favorable for the low-cost operation of industry and environmental industry; the mass range and application range of the material are wider than those of activated carbon; and the material has the adsorption capability more superior to that of a powdered activated carbon reagent particularly for substances with polarity in multi-aspect practical application.

Description

[0001] technical field [0002] The invention discloses a method for utilizing urban sludge, in particular to a microporous adsorbent made by using naturally living microorganisms in urban sludge as pore-forming agents or pore-forming modules, and using the adsorbent The utility model is a multi-purpose hybrid charge-charged adsorbent made by adding a polar nano-scale porous material as a skeleton outer layer as a base core, and belongs to the technical field of resource regeneration and environment. Background technique [0003] With the gradual development of the world's urbanization process and industrialization process, people's pollution and damage to the environment are becoming more and more serious, and environmental governance has become a serious problem that people face. Sewage treatment is an important project in environmental governance. Sewage treatment includes the treatment of sewage itself and the treatment of sludge in sewage. In the current technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/10C02F11/06B01J20/20B01J20/30B01J20/28
CPCY02W10/40
Inventor 许文姬李国声李汉声
Owner SOUTH CHINA REBORN RESOURCES ZHONGSHAN
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