A method for utilizing grease in sludge and special equipment thereof
A sludge and grease technology, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of nitrogen element loss and fertilizer efficiency, high cost of sludge incineration, pollution, etc., and achieve the design structure Simple, excellent processing effect, waste reduction effect
Active Publication Date: 2017-09-26
山东一元绿碳环保科技有限责任公司
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Problems solved by technology
In fact, most of the sludge landfilled, open-air stacked and exported are disposed of randomly, and the proportion of truly safe disposal does not exceed 20%. Due to the high moisture content, the sludge needs to be mixed with other high-calorific value substances for combustion, so the sewage Sludge incineration costs are high; sludge will cause nitrogen loss during composting, low fertilizer efficiency, and there is a risk of heavy metal pollution
The unoptimistic effect of commonly used sludge disposal methods makes the overall sludge treatment situation very severe
Method used
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[0014] A method for utilizing grease in sludge, which is characterized in that sludge with a water content of 25%-30% is dried by heating, the temperature is controlled at 100-150°C, and glucose powder is added to the sludge. Continue heating to increase the temperature to not less than 350°C, the fibers in the sludge are converted into fixed carbon, the grease is converted into gas, and the grease converted into gas is used as fuel to heat the sludge. In this method, adding glucose powder to the sludge can effectively treat the heavy metals in the sludge. When the temperature is controlled at 100-150℃, the water and ammonia in the sludge volatilize to form a mixed gas of water and ammonia, and combine with the heavy metal ions in the sludge to generate ammonia complexes, and the ammonia complexes and sludge After the oxidation-reduction reaction of the glucose powder, the valence of heavy metal ions is reduced or directly reduced to elemental substances, which realizes the tre...
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The invention relates to a method for utilizing oil in sludge, which belongs to the technical field of mechanical equipment, and in particular relates to a method and special equipment for utilizing oil in sludge. The specific technical solution is: a method for utilizing the oil in the sludge, which is characterized in that the sludge with a moisture content of 25%-30% is heated and dried, and the temperature is controlled at 100-150°C. Add glucose powder to the sludge, continue heating to raise the temperature to not less than 350°C, the fibers in the sludge are converted into fixed carbon, the oil is converted into gas, and the oil converted into gas is used as fuel to heat the sludge. Compared with the prior art, the present invention is a new sludge treatment device with reliable technical scheme, no secondary pollution, high investment efficiency and quick effect, and has outstanding substantive features and remarkable progress.
Description
Technical field [0001] The invention relates to a method for utilizing grease in sludge, belonging to the technical field of mechanical equipment, and in particular relates to a method and special equipment for utilizing grease in sludge. Background technique [0002] With the rapid improvement of my country's urbanization level and sewage treatment capacity, the amount of residual sludge, a by-product of sewage treatment, is also increasing. At present, the total sludge output of urban sewage treatment plants has reached 24.33 million t / a, and it is increasing at an average annual rate of 12%; according to forecasts, the national urban sewage treatment plant sludge production will reach 35.6 million tons in 2015. If these huge amounts of sludge are not effectively treated and disposed of, pollutants will re-enter the water body through a variety of ways, causing sewage treatment to cause huge economic and environmental costs due to the sludge treatment process. The sludge treat...
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IPC IPC(8): C02F11/00
Inventor 徐明好
Owner 山东一元绿碳环保科技有限责任公司