Additive for sludge dewatering and sludge dewatering method

A sludge dewatering and additive technology, applied in the direction of dewatering/drying/concentrating sludge treatment, can solve problems such as waste of resources, reduce resistance, increase nutrients, and improve dewatering effect.

Active Publication Date: 2017-03-08
台明青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the hazardous waste treatment center, it is only used for landfill treatment, resulting in a great waste of resources

Method used

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  • Additive for sludge dewatering and sludge dewatering method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides an additive for sludge dewatering, and the additive is antibiotic slag ash. In addition, in the antibiotic slag ash used, the percentage of N is 2.5%, the percentage of P is 9%, the percentage of K is 1%, and the percentage of organic matter is 15%.

Embodiment 2

[0037] This embodiment provides an additive for sludge dewatering, and the additive is antibiotic slag ash. In addition, in the antibiotic slag ash used, the percentage of N is 5%, the percentage of P is 15%, the percentage of K is 5%, and the percentage of organic matter is 25%.

Embodiment 3

[0039] This embodiment provides an additive for sludge dewatering. On the basis of Embodiment 1, the particle size of antibiotic residue ash used in this embodiment is 6 mm.

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Abstract

The invention provides an additive used for sludge dehydration. According to the invention, antibiotic dreg ash is taken as the additive used for sludge dehydration, so that the problems of pollution and high treatment cost of dangerous waste antibiotic dreg are solved, application of the antibiotic dreg ash is broadened, and the antibiotic dreg ash serves as an safe non-pollution environment-friendly resource to be added in the sludge so harm on environment is not caused, thereby achieving the effects of treatment of waste with another waste and waste utilization. Meanwhile, because of unique characteristics of the antibiotic dreg ash, the sludge dehydration is facilitated when the sludge is dehydrated. The invention also provides a sludge dehydration method applying the additive provided by the invention. By use of the method, the additive and the sludge are mixed to facilitate the sludge dehydration.

Description

Technical field [0001] The invention relates to the field of sludge treatment, in particular to an additive for sludge dewatering and a sludge dewatering method. Background technique [0002] Urban sludge is difficult to handle due to the large amount of sludge produced, complex sludge composition, and high water content. In the sludge treatment step, sludge dewatering becomes a key step in sludge treatment. A good sludge dewatering method can reduce treatment costs and will not affect the subsequent sludge treatment. [0003] The moisture in the sludge is divided into four types according to its existing state: 1) Interstitial water, which is free moisture surrounded by sludge particles, generally accounting for about 70% of the total water content of the sludge; 2) Capillary water, capillary water It is the water combined with the sludge particles due to capillary action between the sludge particles or in the crevices of the particles, accounting for about 20% of the total wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14
Inventor 台明青赵显正赵光骞张毅华李祎袁可佳
Owner 台明青
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