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Preparation method and application of sludge deodorant

A deodorant and sludge technology, which is applied in the field of sludge deodorant preparation, can solve the problems of lack of in-depth research on odor in-situ deodorization technology and the late start of odor generation research, so as to reduce food chain circulation and improve The effect of incineration utilization rate and increasing calorific value

Active Publication Date: 2015-04-08
BEIJING BUILDING MATERIALS ACADEMY OF SCI RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on odor generation during sludge collection and treatment started relatively late, and mainly focused on the removal of odor after generation, and lacked in-depth research on in-situ deodorization technology for odor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of sludge deodorant, comprising the following steps:

[0030] A. Sorting: remove inorganic impurities from food waste, and sort out oily water + solids;

[0031] B. Oil refining: put the sorted oily water + solids into a vertical grading container, cook at 115~130°C under normal pressure, there is an overflow hole above the vertical grading container, and the oil overflows from above After the hole overflows, it is collected in the container;

[0032] C. Extraction: crush the raw material containing cellulose and lignin to a particle size of 5-10 cm, put it into the oil obtained in step B for extraction, and the mass ratio of the raw material containing cellulose and lignin to the oil is 1:3 ~1:1, oil temperature ≥ 150°C, stir and mix well, extract for 20-40min, and obtain oil-immersed raw materials containing cellulose and lignin, that is, the basic substance after extraction;

[0033] D. Grinding: Send the extracted base material into a ba...

Embodiment 2

[0039] Further optimization on the basis of Example 1.

[0040]The food waste is passed through a drum screen (Tianjin Baili, 10t / h), a vibrating screening machine (Xiwan Xingye Mining Machinery Factory, Pinggui Management District, model: 1200*2400;) and a magnetic separator (Dongyang Tianli Magnetic Electric Co., Ltd. Company, model: CTB-712) After removing inorganic impurities, they are divided into two types: inorganic components, oily water + solids, the underscreen of the drum sieve is oily water, and the overscreen is solids, which are removed after vibrating screen and magnetic separation Inorganic substances: put oily water and solids into a vertical classification container, cook at 120°C under normal pressure, and collect the oil in the container after overflowing from the overflow hole above the vertical classification container; 50kg of bagasse and 50kg of pine branches are crushed to 5-10cm, put into 150kg of oil heated to above 150°C (preferably 180°C), ke...

Embodiment 3

[0042] Further optimization on the basis of Example 1, the instrument used is the same model as that of Example 2.

[0043] After the kitchen waste drum sieve, vibrating screener and magnetic separator remove inorganic debris, it is divided into inorganic components, oily water + solids; put the oily water and solids into a vertical classification container, at 120 ℃ Cooking under normal pressure, the resulting oil overflows from the overflow hole above the vertical grading container, and is collected in the container; 200kg of wild Artemisia chinensis is crushed to 5-10cm and mixed with 200kg of rice husk, put into 600kg and heated to Mix and extract in oil above 150°C for 30 minutes to obtain the extracted base material and send it to a ball mill to grind it to a size below 1mm, then add 1% calcium dodecylbenzenesulfonate and 1% pulp waste liquid to prepare a deodorant agent. Renovate the sludge receiving bin of the cement plant, add an ultrasonic spray device on the ...

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Abstract

The invention discloses a preparation method of a sludge deodorant. The preparation method comprises the following steps: removing inorganic impurities from kitchen waste, and separating out oily water and solid matters; placing the separated oily water and solid matters in a vertical grading container, digesting under a normal-pressure condition at a temperature of 115-130 DEG C, forming an overflow hole at the upper part of the vertical grading container, and collecting oil into the container after the oil overflows out from the overflow hole at the upper part; crushing a raw material containing cellulose and lignin until the particle size is 5-10cm, placing the raw material into oil and extracting, thereby obtaining an extracted basic substance at an oil temperature of not less than 150 DEG C; placing the extracted basic substance in a ball mill, and grinding until the particle size is not greater than 1mm to obtain a uniform basic substance; and adding a surfactant and a former into the uniform basic substance to prepare the sludge deodorant. According to the preparation method disclosed by the invention, the in-situ deodorant of sludge is prepared by virtue of swill-cooked dirty oil and solid waste, so that the problem of stink disposal perplexing sludge drying and incineration processes is solved; moreover, waste can be treated by using waste, so that the total discharge amount of PM2.5 substances in the atmosphere is reduced.

Description

technical field [0001] The invention relates to the field of solid waste reuse, in particular to odor control and resource recycling technologies for combustible solid waste such as sludge, domestic garbage, kitchen waste, and garden waste, and specifically to the preparation of a sludge deodorant methods and applications. Background technique [0002] With the rapid economic development and the deepening of the urbanization process, the amount of urban sewage treatment in my country is also increasing year by year. Sludge from urban sewage plants is produced in the stage of biochemical treatment of urban domestic sewage, mainly from the primary and secondary sedimentation tanks of domestic sewage treatment plants, and is the largest by-product of urban domestic sewage treatment that is most likely to cause secondary pollution . The amount of sludge generated is large, and about 1 ton of sludge with a water content of 80% will be produced by treating 1,000 tons of urban do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L9/01A61L9/013A61L101/56
Inventor 李春萍郝利炜张觊唐文宇熊运贵
Owner BEIJING BUILDING MATERIALS ACADEMY OF SCI RES