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Method for processing human excrement by utilizing black solider flies to prepare organic fertilizer

A technology of black soldier flies and organic fertilizers, which is applied in the field of feces treatment, using black soldier flies to process human feces to prepare organic fertilizers, to achieve the effects of increasing profits, not changing the nature of land use, and low processing costs

Inactive Publication Date: 2012-01-25
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There is no report on the technology of using black soldier flies to treat human feces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] After extracting human feces from the septic tank, filter out the sundries through a mesh screen with a hole size of 2 cm, add appropriate amount of auxiliary materials (see Table 1), stir evenly, and prepare compost. Pour the culture material into the corresponding container, the height of the culture material is 4cm, and insert an appropriate amount of black soldier fly eggs on the surface of the culture material, and the egg density is: 0.2g black soldier fly eggs / kg culture material. The culture temperature was set at 30°C, and the black soldier fly eggs hatched into larvae on the 2nd day, and began to decompose and transform the compost. Properly replenish water during the cultivation process to prevent excessive temperature rise. On the 18th day, put a larger container outside the culture container, and sprinkle dry rice bran powder in it to facilitate the collection of mature black soldier fly maggots. After 20-25 days, the black soldier fly larvae have reached ...

Embodiment 2

[0026] After extracting the human feces from the septic tank, filter out the sundries through a mesh screen with a hole size of 6 cm, add appropriate amount of auxiliary materials (see Table 2), stir evenly, and prepare compost. Pour the culture material into the corresponding container, the height of the culture material is 6cm, and insert an appropriate amount of black soldier fly eggs on the surface of the culture material, and the egg density is: 0.6g black soldier fly eggs / kg culture material. The culture temperature was 25°C, and the black soldier fly eggs hatched into larvae on the 2nd day, and began to decompose and transform the compost. Properly replenish water during the cultivation process to prevent excessive temperature rise. On the 20th day, a larger container was placed outside the culture container, and dry rice bran powder was sprinkled into it to facilitate the collection of mature black soldier fly maggots. After 25-30 days, the black soldier fly larvae ha...

Embodiment 3

[0030] After extracting human feces from the septic tank, filter out the sundries through a mesh screen with a hole size of 8 cm, add appropriate amount of auxiliary materials (see Table 3), stir evenly, and prepare compost. Pour the culture material into the corresponding container, the height of the culture material is 8cm, and insert an appropriate amount of black soldier fly eggs on the surface of the culture material, and the egg density is: 0.8g black soldier fly eggs / kg culture material. The culture temperature was set at 27°C, and the black soldier fly eggs hatched into larvae on the 2nd day, and began to decompose and transform the compost. Properly replenish water during the cultivation process to prevent excessive temperature rise. On the 18th day, put a larger container outside the culture container, and sprinkle dry rice bran powder in it to facilitate the collection of mature black soldier fly maggots. After 20 to 30 days, when the black soldier fly larvae have ...

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Abstract

The invention discloses a method for processing human excrement by utilizing black solider flies to prepare an organic fertilizer, which belongs to the technical field of environmental protection. The method comprises the following steps: filtering excrement dregs through a mesh screen with an aperture of 2-10 cm, and then, adding auxiliary materials to the filtered excrement dregs to prepare the mixture into a culturing material, inoculating ova of the black solider flies on the surface of the culturing material, culturing the ova at 25-35 DEG C for 20-30 days, collecting the culturing material, drying the culturing material, and preparing the culturing material into the organic fertilizer, wherein the auxiliary materials are feather powder, meat and bone meal, saw powder and straw powder. The method provided by the invention has strong processing capability, less occupied field and low energy consumption in a processing process; in the processing process of the human excrement dregs, a biological organic fertilizer and the biologic proteins of maggots of the black solider flies are obtained synchronously; the resource utilization of the human excrement dregs is achieved; waste is changed into valuable articles; not only is the environmental sanitation improved, but also the organic fertilizer and the biologic proteins are produced simultaneously; and the method has quite good application foreground.

Description

technical field [0001] The invention relates to a feces treatment method, and belongs to the field of environmental protection, in particular to a method for preparing organic fertilizer by using black soldier flies to treat human feces. Background technique [0002] Every day, large and medium-sized cities pump out a large amount of human feces from the septic tanks of public toilets. Otherwise, these human feces will have the environmental risk of overflowing after the tank is full. A big problem. At present, the main treatment method for urban human excrement is to pull it to landfill after dehydration or air-drying. A small amount of human waste is used for microbial fermentation composting. [0003] Although the method of landfill is simple and convenient, the processing cost is high, the time is long, and it takes up a lot of land. [0004] Black soldier fly (Hermitia illucens), English name Black soldier fly, also known as bright flat-horned soldier fly, is a kind ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F3/04C02F11/02
CPCY02A40/20
Inventor 胡新军张古忍
Owner SUN YAT SEN UNIV
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