Rapid sludge dewatering system and dewatering method

A rapid dehydration and sludge technology, applied in the direction of water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of low dehydration rate, high energy consumption, complicated operation, etc., and achieve good results, The effect of low energy consumption and simple operation

Pending Publication Date: 2021-01-01
安徽省融工博大环保技术材料研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problems of low dehydration rate, complex operation or high energy consumption in the existing sludge dewatering process, the present invention provides a rapid sludge dehydration system and dehydration method

Method used

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  • Rapid sludge dewatering system and dewatering method
  • Rapid sludge dewatering system and dewatering method
  • Rapid sludge dewatering system and dewatering method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0049] The dehydration aid of this embodiment includes inorganic mineral materials and composite flocculant materials. The inorganic mineral materials contain: 42.5PO cement, 25%; aluminate cement, 50%; fly ash, 5%; anhydrite, 20% %. The composite flocculant material is a composite of polyaluminum chloride and polyferric chloride with a mass ratio of 2:1, and the particle size of all raw materials is 200-mesh standard sieve.

[0050] The dehydration aid of the present embodiment, its process is:

[0051] (1) batching each component raw material in the inorganic mineral material according to the mixing ratio, and then vigorously stirring to form a uniform mixture for 15 minutes to obtain the inorganic mineral composite material;

[0052] (2) Batching the organic flocculant and inorganic flocculant required for batching, then vigorously stirring to form a uniform mixture, stirring for 15 minutes, to obtain a composite flocculant material;

[0053] (3) The above-mentioned inorg...

Embodiment 2

[0057] The dehydration aid in this embodiment includes inorganic mineral materials and composite flocculant materials, and the inorganic mineral materials contain: 42.5PO cement, 30%; sulphoaluminate cement, 40%; silica fume, 10%; anhydrite, 20% %. The composite flocculant material is a composite of polyaluminum chloride and potassium alum in a mass ratio of 4:1. The particle size of all raw materials in the dehydration aid passes through a 300-mesh standard sieve.

[0058] The processing process of the inorganic mineral composite dehydrating agent of this embodiment is basically the same as that of Embodiment 1, the main difference being that the mass percentages of the inorganic mineral material and the composite flocculant material are 95% and 5% respectively.

[0059] The dehydration aid of the present embodiment, the dehydration process of the coal washing slime that it handles 90% water content is:

[0060] According to the ratio of dehydration aid: dry cleaning coal s...

Embodiment 3

[0062] The dehydration aid of the present embodiment includes inorganic mineral materials (99%) and composite flocculant materials (1%), and contains in the inorganic mineral materials: 42.5PO cement, 30%; Iron aluminate cement, 10%; Biomass Incineration ash, 20%; fly ash, 30%; desulfurized gypsum, 10%; the composite flocculant material is a composite of polyaluminum sulfate and PAM with a mass ratio of 10:1, and the particle size of all raw materials is 300 mesh standard sieve .

[0063] The dewatering aid of the present embodiment, its process of handling the municipal sludge of 200% water content is:

[0064] According to the ratio of dehydration aid: dry sludge of 1:10, stir the dehydration aid into the municipal sludge, and carry out strong stirring, so that the mud has a significant apparent fluidity (slump 220mm), using a high-pressure mud pump. Municipal sludge is pumped into the plate and frame filter press, under the mud pressure of 1.2MPa, after holding the pressur...

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Abstract

The invention discloses a rapid sludge dewatering system and a dewatering method, and belongs to the technical field of sludge dewatering. The sludge rapid dehydration system comprises a dehydration auxiliary agent tank, a sludge activation stirring device, a filter pressing device, an extrusion granulation device and a drying device, the drying device comprises a machine shell, and the interior of the machine shell is divided into an upper space and a lower space through a breathable conveying belt horizontally distributed in the length direction of the machine shell; wherein the upper spaceis divided into a plurality of air entraining channels through an upper partition baffle, the lower space is divided into a plurality of air entraining channels through a lower partition baffle, and air enters through an air inlet in one end of the machine shell and then sequentially and alternately enters the lower air entraining channels and the upper air entraining channels. By the adoption ofthe scheme, sludge can be dewatered rapidly and efficiently, deep dewatering of the sludge is achieved, the application process is easy to operate, and energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of sludge dewatering, in particular to a rapid sludge dewatering system and a dewatering method. Background technique [0002] Sludge (printing and dyeing sludge, coal washing sludge, urban surplus sludge, waste paper papermaking sludge, etc.) is a sediment formed by the migration, transformation, and precipitation of substances in water during the purification process of domestic sewage and industrial wastewater. Or the bottom mud deposited by suspended matter in the water body. Therefore, sludge is a solid waste (actually a semi-solid waste) formed with the purification of various types of water. The characteristics of sludge are high water content (moisture content ≥ 80%), large volume, high organic matter content, various metal elements, fine particles, poor air permeability, and a large number of active microorganisms. It will cause serious secondary pollution to the environment. The cost of sludge t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/143C02F11/145C02F11/148C02F11/122C02F11/13B01J2/20
CPCB01J2/20C02F11/122C02F11/13C02F11/143C02F11/145C02F11/148
Inventor 樊传刚鲁廷桂李杰樊曦庞亚峰李风军
Owner 安徽省融工博大环保技术材料研究院有限公司
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