Mixed-type sludge solar dryer

A technology of solar energy and dryer, applied in water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, energy wastewater treatment, etc., can solve the problems of lagging sludge treatment and disposal

Inactive Publication Date: 2016-07-20
YUNNAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

According to statistics, my country's investment in sludge treatment and disposal accounts for about 20% to 50% of the total investment in sewage treatment plants. It can be seen that sludge treatment and disposal is in a serious lagging state.

Method used

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  • Mixed-type sludge solar dryer

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Experimental program
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Embodiment Construction

[0011] The present invention is realized through the following technical solutions: when the dryer starts to operate, a large amount of flowing air is needed, the air valves (4) and (6) are opened, the fan (5) is started, and the air circulation is accelerated. The high-temperature hot air is turned on, the air valve (9) is opened, and the high-temperature hot air enters the drying chamber (15) for drying operation. The wet sludge enters from the feed port (7), and after being dried in the drying chamber (15), it is discharged from the conveyor belt. The material port (10) is discharged. At the same time, open the air valves (3) and (8) to discharge the moisture from the exhaust port (2). Through the setting of the air valve, a part of the air flow can be circulated in the drying room and the pipeline, thereby reducing energy consumption.

[0012] Under the conveyor belt, there are up and down staggered guide rails. The sludge moves on the conveyor belt in a wave shape, which...

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Abstract

The invention discloses a mixed-type sludge solar dryer which mainly consists of seven parts such as solar air collector, an air valve, a fan, a conveying belt, an air pipe, a drying chamber, a gas stove and the like. The mixed-type sludge solar dryer utilizes solar energy as a main heat source and methane generated in a sewage treatment process as an auxiliary heat source, so that continuous drying in different time and different seasons can be realized, not only can energy conservation and environmental friendliness be realized, but also the operating cost is relatively lower than those of other drying devices.

Description

technical field [0001] The invention relates to a hybrid solar dryer, in particular to a hybrid sludge solar dryer, which belongs to the technical field of environmental protection. Background technique [0002] According to estimates, the amount of sludge (dry weight) discharged by urban sewage treatment plants in my country is about 1.3 million tons per year, and the annual growth rate is greater than 10%, especially in several cities and regions with a high level of urbanization in my country. The problem of the way out of the mud has become very prominent. If all urban sewage is treated, the amount of sludge (dry weight) will be 8.4 million tons, accounting for 3.2% of my country's total solid waste. [0003] At present, among the main methods of sludge treatment and disposal in my country, agricultural use of sludge accounts for about 44.8%, landfilling accounts for about 31%, other disposal about 10.5%, and non-disposal about 13.7%. These so-called treatment and dispos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
CPCY02W10/37C02F11/12C02F2303/06
Inventor 季旭许强强刘佳星李海丽
Owner YUNNAN NORMAL UNIV
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