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Treatment method for sludge in down feather sewage

A treatment method and sewage technology, applied in the field of down production, can solve the problem of sludge easily smelling

Inactive Publication Date: 2018-12-07
芜湖市三山区绿色食品产业协会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, a large amount of water is used in the cleaning process of feathers, which in turn leads to a large amount of sewage in the down production process, and the sewage contains a large amount of organic matter, and the sewage will form sludge rich in organic matter at the bottom after standing and settling , these sludges are very stinky

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Let the sewage after washing down feathers stand still (the standing temperature is 15°C, and the standing time is 15 hours), then remove 93% of the supernatant by volume, and then add yeast to the system (the amount of yeast added is 1.5kg / t sewage) for fermentation (fermentation temperature is 30°C, fermentation time is 48h);

[0025] 2) Filter the processed product after fermentation to take the filter cake, then soak the filter cake in acid solution (sulfuric acid) with a pH of 4.5 (soaking temperature is 38°C, soaking time is 10h), and then add alkaline compound (hydroxide Sodium) neutralized to neutral, and finally filtered again to take the filter cake for cooking (cooking temperature 105°C, cooking time 50min), drying (drying temperature 105°C, drying time 4h) to obtain the processed product A1.

Embodiment 2

[0027] 1) Let the sewage after washing down feathers stand still (the standing temperature is 10°C, and the standing time is 20 hours), then remove 90% of the supernatant by volume, and then add yeast to the system (the amount of yeast added is 1kg / t sewage) for fermentation (fermentation temperature is 25°C, fermentation time is 72h);

[0028] 2) Filter the processed product after fermentation to take the filter cake, then soak the filter cake in acid solution (hydrochloric acid) with a pH of 4 (soaking temperature is 35°C, soaking time is 12h), and then add alkaline compound (bicarbonate Potassium) neutralized to neutral, and finally filtered again to take the filter cake for cooking (cooking temperature 100°C, cooking time 60min), drying (drying temperature 100°C, drying time 5h) to obtain the processed product A2.

Embodiment 3

[0030] 1) Let the sewage after washing the feathers stand still (the standing temperature is 20°C, and the standing time is 10 hours), then remove 95% of the supernatant by volume, and then add yeast to the system (the amount of yeast added is 2kg / t sewage) for fermentation (fermentation temperature is 35°C, fermentation time is 36h);

[0031] 2) Filter the processed product after fermentation to take the filter cake, then soak the filter cake in an acid solution (sulfuric acid, hydrochloric acid and phosphoric acid) with a pH of 4 (soaking temperature is 35°C, soaking time is 12h), and then add alkali The compounds (sodium hydroxide, potassium hydroxide, potassium bicarbonate and sodium bicarbonate) were neutralized to neutral, and finally filtered again to take the filter cake for cooking (the cooking temperature was 100°C, and the cooking time was 60min), dried (the drying temperature was 100°C, drying time is 5h) to obtain the processed product A3.

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PUM

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Abstract

The invention discloses a treatment method for sludge in down feather sewage. The treatment method comprises the following steps: 1) leaving the sewage after down feather is cleaned to stand, then removing 90% to 95% by volume of supernate, and adding saccharomycetes into a system to ferment; and 2) filtering the fermented treatment product and taking filter cakes, then soaking the filter cakes inacid liquor, then adding an alkaline compound to be neutralized to be neutral and finally filtering the product and taking the filter cakes and decocting and drying the filter cakes. The treatment method can recycle sludge in the down feather cleaning sewage efficiently.

Description

technical field [0001] The invention relates to the field of down production, in particular to a method for treating sludge in down sewage. Background technique [0002] Down is the fluff that grows on the abdomen of geese and ducks, and is called feathers in flakes. Since down is a kind of animal protein fiber, there are tens of thousands of small triangular pores densely covered on the down ball-shaped fiber, which can shrink and expand with the change of temperature, and has the function of temperature adjustment, which can absorb the flowing hot air from the human body and isolate the invasion of cold air from the outside. . From the analysis of the bulkiness test, down is one level higher than silk, cotton and other thermal insulation materials. For example, the minimum standard of 450 degrees fluffy 90 duck down is also more fluffy than silk and cotton, so down is purely used as a thermal insulation material. The economic value is much higher than other thermal ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/12C02F11/00C02F1/52C05F5/00C05F7/00
CPCC02F1/52C02F11/00C02F11/02C02F11/12C02F11/121C05F5/002C05F7/00C02F2001/007C02F2303/06C05F11/08C05F17/00C05F9/04Y02A40/20
Inventor 卢国孝刘建国
Owner 芜湖市三山区绿色食品产业协会