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Sludge drying treatment method and device

A sludge drying and treatment device technology, which is applied in the direction of dehydration/drying/concentrated sludge treatment, can solve the problems of low thermal efficiency, high operation cost, and large investment, and achieve the reduction of sludge volume and operation cost Effect

Inactive Publication Date: 2012-07-11
BEIJING BIOTECHINA ENVIRONMENT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low thermal efficiency of these devices, the result of the use of thermal energy is "large to small", which requires large investment and high operating costs in practical applications, making it difficult to fully promote

Method used

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  • Sludge drying treatment method and device
  • Sludge drying treatment method and device
  • Sludge drying treatment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the following, a specific description will be given by taking the application of the present invention in a sludge drying workshop as an example.

[0028] 1. The sludge treatment capacity of this project is 200kg / h, and the properties of the sludge entering the equipment system are shown in Table 1:

[0029] Feed sludge properties table

[0030] project Mass fraction % Remark moisture content 80.6 Take the average value based on the test data of one month Solid content 19.4 Take the average value based on the test data of one month

[0031] Table I

[0032] 2. Please refer to Table 2 for the main equipment list of the project:

[0033] Table II List of main equipment

[0034] serial number name Model / parameter quantity 1 Sludge drying chamber SW-200 1 set 2 fan Z10-20 1 set 3 Activated carbon adsorption device HXF-10 1 set 4 Evaporator Copper tube with aluminum fin tube ...

Embodiment 2

[0042] In the following, a specific description will be given by taking the application of the present invention in a sludge drying workshop as an example.

[0043] 1. The sludge treatment capacity of this embodiment is 12000kg / day, and the properties of the sludge entering the equipment system are shown in Table 4:

[0044] project Mass fraction % Remark moisture content 78.5 Take the average value based on the test data of one month Solid content 21.5 Take the average value based on the test data of one month

[0045] Table four

[0046] 2. Please refer to Table 5 for the main equipment list of the project:

[0047] List of main equipment

[0048] serial number name Model / parameter quantity 1 Sludge drying chamber SW-500 1 set 2 fan Z10-30 1 set 3 Activated carbon adsorption device HXF-30 1 set 4 Evaporator Copper tube with aluminum fin tube 1 set 5 condenser Copper tube with...

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Abstract

The invention discloses a sludge drying treatment method, which comprises the steps of drying sludge with a total water content of 75-85% with dry air having a temperature of 35-50 DEG C and a relative humidity of 15-25% to reduce the water content of the sludge to 10-60% and obtain humid air; performing the humid air on cold drying treatment to obtain air with the temperature of 1-10 DEG C and the relative humidity of 90-95%; heating the air to reach the temperature of 35-50 DEG C and the relative humidity of 15-25%; and recycling the heated air in sludge drying treatment. The invention also discloses a sludge drying treatment device, which comprises a sludge drying air circulation loop and a refrigerant circulation loop. The sludge drying air circulation loop comprises a sludge drying chamber, an evaporator, a condenser and a blower fan which are in circulation connection with one another. The refrigerant circulation loop comprises an evaporator, a compressor, a condenser and a radiator which are in circulation connection with one another.

Description

technical field [0001] The invention relates to a sludge drying method, in particular to a sludge drying treatment method for activated sludge, industrial sludge and the like after dehydration; the invention also relates to a device for realizing the sludge drying treatment method. Background technique [0002] With the rapid development of sewage treatment technology, the water pollution problem that once restricted my country's economic development has been greatly improved. However, the sludge produced in the sewage treatment process contains heavy metals and pathogens due to its large amount and viscous properties. Harmful substances such as microorganisms, if not handled properly, will bring serious secondary pollution to the environment. According to the statistics of the national environmental protection department, by 2010, my country's urban sewage treatment rate will reach 60%, then the annual national sludge production will reach 30 million tons, and the number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 李国文马书马高明王天德张二龙李敬峰
Owner BEIJING BIOTECHINA ENVIRONMENT CORP
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