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Production of hydrogen for combining mineralize refuse, swill waste and sludge

A technology for mineralizing garbage and sludge, which is applied in waste fuel, climate change adaptation, bio-organic part treatment, etc. It can solve the problems of large initial investment, long fermentation cycle, unstable operation, etc., and achieves low infrastructure cost and hydrogen production. The effect of high volume and low operating cost

Inactive Publication Date: 2009-08-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, from the perspective of technical analysis, the anaerobic fermentation treatment of swill waste has the advantages of energy saving, high efficiency, and resource recovery, but there are also problems such as long fermentation cycle, large initial investment, unstable operation, and easy acidosis leading to reaction termination. Therefore, it has not been widely used

Method used

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  • Production of hydrogen for combining mineralize refuse, swill waste and sludge
  • Production of hydrogen for combining mineralize refuse, swill waste and sludge
  • Production of hydrogen for combining mineralize refuse, swill waste and sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The 1-ton pilot run test was carried out in a machinery and equipment factory in Taixing, Jiangsu (equipment production cooperation unit). The slops used for the test were taken from 3 restaurants and hotels in the suburbs of Taixing, Jiangsu. They were randomly collected on site at 2 pm every day and mixed for backup. Its composition analysis is shown in Table 2.

[0024] Table 2 Analysis of characteristics of pilot scale swill waste

[0025]

[0026] Mineralized waste from a landfill site in Jiangsu, which has been closed for 3 years and whose landfill age is 15 years old, was mined and air-dried, and then sieved to a particle size of 10mm. The swill waste was crushed by a food crusher to a particle size of 10mm. The sludge was taken from anaerobic granular sludge from a UASB process sewage treatment plant in Wuxi. The proportion is mixed with the swill waste, and the above mixture is sterilized by dry heat sterilization at 150°C for 30 minutes, and then put into ...

Embodiment 2

[0028] The composition of swill waste collected by a 100t / d solid waste treatment plant in Shanghai is shown in Table 3:

[0029] Table 3 Analysis of characteristics of swill waste in a domestic waste treatment plant

[0030]

[0031] Mineralized waste from a landfill site in Shanghai that had been closed for 3 years and was landfilled for 10 years was mined and air-dried, and sieved to a particle size of 5mm. The swill waste is crushed by a food crusher to a particle size of 10mm. The anaerobic sludge is taken from the concentration pool of the adjacent chemical first-level process sewage plant. The ratio of the swill waste is mixed with the swill waste, and the above mixture is sterilized by 100°C, 30min moist heat sterilization, and then the swill waste dry weight is put into the screened mineralized garbage at a ratio of 5:1. After adjusting the moisture content to 75% to 90%, put it into a constant temperature (55°C) anaerobic fermentation reaction tank. The headspace v...

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Abstract

Production of hydrogen from mineral refuse with swill waste and sludge is carried out by sieving mineral refuse underground for 1-20years to grain size 1-10mm, washing by water, mixing by proportion of 1:1-10:1 and with 1-10mm sieve sludge, dry-heat sterilizing or wet-heat sterilizing at 100-200degree for 0.5-2hrs, pre-treating for 0.5-2hrs to obtain combined fermented substrate, laying aside in closed thermostatic fermenting container, fermenting to produce hydrogen at 25-55degree, pre-treating and utilizing. It is cheap, simple, has more hydrogen output and no secondary pollution. It can be used as fuel or generation raw materials.

Description

technical field [0001] The invention discloses a method for combining mineralized garbage with swill waste and sludge to jointly produce hydrogen, relates to a swill waste treatment process, and belongs to the technical field of solid waste recycling. Background technique [0002] Swill generally refers to cooked food waste, which is mostly concentrated in restaurants, canteens and other places where many people eat. [0003] The appearance of swill is bad, its high water content and its perishable characteristics have a great environmental impact on the urban environment; in addition, due to the complexity of the source of swill, there is serious virus pollution, which threatens the public health safety of the city; long-term use It is also improper to directly use it as animal feed, which is easy to cause various animal plagues, and there is a danger of forming a pollution chain at the same time, threatening human health and safety. Moreover, in recent years, the output o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P3/00C05F9/00
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 赵由才郭强牛冬杰柴晓利钱小青刘常青袁玉玉曹先艳
Owner TONGJI UNIV
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