Air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting and fresh keeping method and device

A high-efficiency, energy-saving, treatment device technology, applied in dewatering/drying/concentrated sludge treatment, heating, etc., can solve the problem of difficult to estimate effect, and achieve the effects of low heat loss, less land occupation, and simple equipment

Inactive Publication Date: 2011-06-01
郭少仪
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if fresh sludge can be quickly preserved and dried, its calorific value and organic matter content can be kept to the maximum extent, which can not only provide some renewable energy for industry, but also provide a large amount of harmless waste for agriculture and ecological agriculture and forestry. Organic fertilizer, its role will be difficult to estimate

Method used

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  • Air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting and fresh keeping method and device
  • Air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting and fresh keeping method and device
  • Air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting and fresh keeping method and device

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Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1: A kind of air-pumping type high-efficiency energy-saving sludge instant rapid low-temperature drying disinfection preservation treatment method, its process steps are:

[0056] (1) Get the fresh activated sludge that sewage treatment plant produces, carry out conventional mechanical dehydration, obtain the preliminary dewatered sludge that weight percentage water content is 78%-82%;

[0057] (2) Put the preliminary dewatered sludge into the closed inner cylinder of the drying furnace, then start the pulverizing agitator in the inner cylinder and heat the preliminary dewatered sludge in the inner cylinder to not lower than 40°C; the closed inner cylinder of the drying furnace Located in the outer cylinder, and there is a heat exchange chamber between the inner wall of the outer cylinder and the outer wall of the closed inner cylinder;

[0058] (3) Start the pumping air machine, pump out the water vapor in the closed inner cylinder and press the extracted wa...

Embodiment 2

[0065] Embodiment 2: a kind of pumping air type high-efficiency energy-saving sludge instant rapid low-temperature drying disinfection fresh-keeping treatment device, its structure is (such as figure 2 shown), it has an outer cylinder 19 with an insulating layer 13 on its periphery, a closed inner cylinder 1 is located in the outer cylinder 19, and there is a heat exchange chamber 2 between the outer wall of the closed inner cylinder 1 and the inner wall of the outer cylinder 19; the closed inner cylinder 1 The bottom is equipped with an electric heating element 12 connected with a temperature measuring heating controller 6 and a dry mud discharge pipe 5 with a valve, and the closed inner cylinder 1 with a vent valve 15 on the top is provided with a crushing type agitator 3. The upper part of the inner cylinder 1 is also provided with a feed pipe 4 with a feed valve; the air inlet of the air pump 9 driven by the frequency conversion motor 10 communicates with the air suction p...

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Abstract

The invention relates to air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting and fresh keeping method and device. The invention directly carries out treatment in a sewage treatment plant; after sludge which is primarily concentrated is directly and mechanically dewatered, the sludge enters a drying stage to ensure that the calorific value and the organic matter content of the dried sludge are maximized; the air sucking and pressing type drying device adopts a double-cylinder structure; and the change of the evaporation velocityof steam in a frequency conversion, regulation and drying adaptation process is used so as to guarantee pressure and temperature working conditions required by a heat transfer process between an inner cylinder and an outer cylinder. A product adopts a vacuum packaging method to be beneficial to the condition that during a storage period, organic matters cannot be influenced by exterior environmental conditions and time and cannot deteriorate to gradually lose the use values so as to achieve the effect of fresh keeping. The invention also realizes the purposes of high efficiency, energy saving, high speed, low-temperature drying, sterilization and disinfection.

Description

Background technique [0001] With the continuous development of industrial city construction and the improvement of people's living standards, the pollution and damage to the environment are becoming more and more serious, and the governance of environmental protection is becoming more and more important. According to my country's "Eleventh Five-Year Plan" for environmental protection and the "Eleventh Five-Year Plan" for the construction of urban sewage treatment and recycling facilities, by 2010, all cities and towns in my country will need to build sewage treatment facilities, and the urban sewage treatment rate will not be lower than 70%. . Therefore, it is estimated that the national urban sewage capacity will exceed 1×10 8 t / d, the accompanying sludge (with a water content of about 80%) will be as high as 3×10 7 t / d, together with polluted river and lake dredging sludge and urban sewer pollution, as well as the sewage pretreatment of the enterprise itself, the amount of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/12A61L2/04
Inventor 郭少仪
Owner 郭少仪
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