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A method for preparing microwave absorbing agent from municipal dewatered sludge

A microwave absorbent, dewatering sludge technology, applied in water/sludge/sewage treatment, sludge treatment, recycling technology, etc., can solve problems such as poor microwave oven equipment, achieve large sludge volume reduction and low cost , the effect of improving the efficiency of microwave heating

Inactive Publication Date: 2018-09-14
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the amount of sludge used in these testing experiments is generally about 30ml. The microwave ovens used are simple and simple, and some even use household microwave ovens. Industrial sludge microwave extraction has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] The principles and features of the present invention will be described below, and the examples given are only used to explain the present invention, not to limit the scope of the present invention.

[0029] Microwave energy is a new type of green energy. Under the action of the alternating microwave electric field, the material molecules with polarity change with the change of the electromagnetic field. The microwave radiation high-frequency electromagnetic wave penetrates the extraction medium and reaches the internal vascular bundle and the material. Glandular system. The characteristics of microwave heating are as follows:

[0030] a. Penetrating heating, fast heating speed. The penetration distance is theoretically the same order of magnitude as the wavelength of electromagnetic waves. Microwave heating is to make the heated object itself become a heating object, which is called the overall heating method. It does not require a process of heat conduction, so it can be ...

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Abstract

The invention relates to a method for preparing a microwave absorber from municipal dewatered sludge, which belongs to the field of environmental geotechnical engineering, and comprises the following steps: step S1, adding 0.01-0.5 parts by weight of photocatalyst to 100 parts by weight of municipal dewatered sludge , the extraction agent of 0.1-2 weight parts, the wave absorbing agent of 1-15 weight parts and the activator of 0.1-5 weight parts; The agent and the activator are evenly mixed; step S3, put the above sludge mixture into a microwave oven for microwave treatment to obtain a microwave absorbing agent for microwave ovens that can be used to improve heating efficiency. The invention turns waste into treasure, can convert solid waste material sludge into microwave absorber, and use it as an additive can greatly improve microwave heating efficiency, and at the same time, the method can efficiently reduce active organic matter in sludge and passivate inert organic matter , sludge volume reduction and other advantages.

Description

Technical field [0001] The invention relates to the field of environmental geotechnical engineering, in particular to a method for preparing a microwave absorbent by using municipal dewatered sludge. Background technique [0002] Due to the construction of sewage plants in my country, my country's urban sewage treatment plants have basically achieved the initial reduction of sludge, but have not achieved the stabilized treatment of municipal dewatered sludge. According to statistics, about 80% of sewage plants have sludge thickening and dewatering facilities, which have achieved a certain degree of reduction; about 80% of sludge has not been stabilized, and the sludge contains malodorous substances, pathogens, and persistence. Organic matter and other pollutants are transferred from sewage to land, leading to further diffusion of pollutants, which greatly reduces the environmental emission reduction benefits of large sewage treatment facilities that have been built and put into o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00C02F11/00
CPCC02F11/00B09B3/40Y02W30/82
Inventor 汪华方龚小龙韩俭冯浩文尹先雄蔡凯陈卓杨黎业
Owner WUHAN TEXTILE UNIV
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