Curing sintering-free granulation method for sludge

A treatment method and sludge technology, which is applied in the field of environmental engineering waste treatment and water conservancy engineering materials, can solve the problem that sludge is difficult to be directly used as engineering materials, and achieve the effect of high solidification efficiency and simple process

Active Publication Date: 2014-07-09
祝建中
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is difficult to dire...

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  • Curing sintering-free granulation method for sludge
  • Curing sintering-free granulation method for sludge

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Experimental program
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Effect test

Embodiment 1

[0025] The first step: use pumps and pipelines to obtain the bottom sludge;

[0026] Step 2: Use a vibrating filter screen to pretreat the sludge, separate the solid waste such as plants and stones, and the remaining sludge enters the next section of the processing unit;

[0027] The third step: use the pipeline to input the water-containing sludge to the curing equipment, and spray the curing material; in the curing material, the addition amount of each component is: Portland cement 350kg / m 3 Silt, fly ash 175kg / m 3 , Phosphogypsum 35kg / m 3 ; Then add 105kg / m of steel slag with a particle size of 1-5mm 3 mix;

[0028] Step 4: Use a granulator to make the solidified silt into aggregates in the shape of stones or pebbles.

Embodiment 2

[0030] The first step: use pumps and pipelines to obtain the bottom sludge;

[0031] Step 2: Use a vibrating filter screen to pretreat the sludge, separate the solid waste such as plants and stones, and the remaining sludge enters the next section of the processing unit;

[0032] The third step: use the pipeline to input the water-containing sludge to the curing equipment, and spray the curing material; in the curing material, the addition amount of each component is: Portland cement 350kg / m 3 , fly ash 175kg / m 3 , desulfurized gypsum 35kg / m 3 ; Then add 175kg / m of slag with a particle size of 1-5mm 3 mix;

[0033] Step 4: Use a granulator to make the solidified silt into aggregates in the shape of stones or pebbles.

Embodiment 3

[0035] The first step: use pumps and pipelines to obtain the bottom sludge;

[0036] Step 2: Use a vibrating filter screen to pretreat the sludge, separate the solid waste such as plants and stones, and the remaining sludge enters the next section of the processing unit;

[0037] The third step: use the pipeline to input the water-containing sludge to the curing equipment, and spray the curing material; in the curing material, the addition amount of each component is: Portland cement 500kg / m 3 , fly ash 250kg / m 3 , Phosphogypsum 60kg / m 3 ; Then add 150kg / m of slag with a particle size of 1-5mm 3 mix;

[0038] Step 4: Use a granulator to make the solidified silt into aggregates in the shape of stones or pebbles.

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Abstract

The invention provides a curing sintering-free granulation method for sludge. The method comprises the following steps: filtering sludge with a vibrating filter sieve so as to separate solid waste like plants and pebble in the sludge; placing the sludge having undergone filtration into a curing apparatus, sprinkling a curing agent, adding fine aggregate and carrying out mixing; and subjecting the cured sludge to granulation with a granulator so as to obtain pebble or cobblestone-shaped aggregate. The invention further provides application of the pebble or cobblestone-shaped aggregate prepared by using the method in preparation of plant type porous concrete or other water constructions. The method uses industrial waste as a curing agent for immobilization of the sludge and has the advantages of simple process, high curing efficiency and achievement of the good effect of treatment of waste with waste.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering waste treatment and water conservancy engineering materials, and in particular relates to a sludge solidification and non-fired granulation treatment method, and also relates to the use of the stone or pebble-shaped aggregate prepared by the method in plant-based porous concrete or other Application in the preparation of hydraulic structures. Background technique [0002] With the continuous improvement of environmental protection and ecological diversity requirements, plant-growing porous concrete has emerged as a kind of environmentally friendly ecological concrete. It is a concrete with a special continuous void structure, which has good water and air permeability and plants can grow directly on its surface. The current plant-based porous concrete is mainly made of coarse aggregate, admixture, cement, chemical additives and water, and the coarse aggregate is generally made of...

Claims

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Application Information

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IPC IPC(8): C04B18/30
CPCY02W30/91
Inventor 祝建中陈冠寰史海波胡志强
Owner 祝建中
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