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Method for treating sludge of aquatic product processing factories

A processing plant and sludge technology, which is applied in the field of sludge treatment in aquatic product processing plants, can solve the problems of no economic benefit, low efficiency, and low organic matter content, and achieve the effect of less investment, excellent environment, and large processing capacity

Pending Publication Date: 2017-10-24
上海纳德生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with livestock and poultry manure, the organic matter content of aquaculture processing wastewater sludge is low, so the efficiency of using black soldier flies for treatment is low and there is no economic benefit

Method used

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  • Method for treating sludge of aquatic product processing factories

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Collect 1 ton of sludge from the aquatic product processing plant in the sludge tank, add 1 / 1000th of the sludge mass urea and 15% of the sludge mass straw powder, and mix it into a mixture with a water content of about 70wt%. Then, pour into the prepared sludge (mixture) the mixed bacterial solution of yeast, lactic acid bacteria, and Bacillus subtilis, cover the sludge pool with a plastic film and seal it, and ferment for 10 days. After the fishy smell is eliminated, the sludge is taken out , paved into a plane with a thickness of about 10 cm, and then according to the added mass of 100 g / ton of sludge, black soldier fly eggs were inserted at 30°C, and after 10 days of treatment at 30°C, they hatched into black soldier fly larvae and obtained Insect manure, after sieving the black soldier fly larvae and insect manure with a vibrating sieve, the black soldier fly larvae are sent to a vacuum low-temperature dryer for drying, and the drying temperature is controlled at 75...

Embodiment 2

[0048] Collect 1 ton of sludge from the aquatic product processing plant in the sludge tank, add ammonium carbonate of 2 / 1000 of the sludge mass and 20% of the sludge mass of rice husk powder, and mix it into a water content of about 60wt%. Then, pour the EM bacterial liquid into the prepared sludge (mixture), cover the sludge pool with a plastic film and seal it, and ferment for 7 days. After the fishy smell is eliminated, take out the sludge and spread it into a thickness of about 5 cm Then, according to the added mass of 150 g / ton of sludge, the eggs of black soldier flies were inserted at 30°C. After 7 days of treatment at 30°C, black soldier fly larvae were hatched and feces were obtained. After the larvae and insect droppings are sieved with a vibrating sieve, the black soldier fly larvae are crushed into a slurry, and then EM bacteria are added to the resulting slurry, and fermented and stored in a sealed container; the insect droppings are matured and dried to make bioo...

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Abstract

The invention provides a method for treating sludge of aquatic product processing factories. The method comprises the following steps: preparing the sludge; adding deodorization microorganisms into the prepared sludge and carrying out fermentation and deodorization; adding black soldier fly eggs into the deodorized sludge, and obtaining larvae and worm dung of the black soldier fly after 7-15 days. According to the technical scheme provided by the invention, the method for treating sludge of aquatic product processing factories has the technical advantages of simple method, low cost, high income, high unit treatment capacity and high treatment efficiency; the black soldier fly is capable of converting organic matters in the sludge into larvae and worm dung of the black soldier fly; the obtained black soldier fly larvae can be used as high-quality insect proteins; the worm dung can be processed into organic fertilizers, so that the additional value is obviously improved; the black soldier fly is capable of generating antimicrobial peptide in the process of converting the sludge; the antimicrobial peptide is capable of killing a plurality of types of harmful bacteria and also achieves the deodorization effect; the method is an ideal environment-friendly treatment process and also has excellent environmental, social and economic benefits.

Description

technical field [0001] The invention relates to a method for resource utilization of sludge, in particular to a method for treating sludge in aquatic product processing plants. Background technique [0002] The sludge produced by the aquatic food processing industry is obviously different from ordinary sludge, with high organic matter content, strong fishy smell, and serious environmental pollution. In the prior art, it is usually buried or prepared as organic fertilizer, but it has the problems of long aging time, large investment, low income, and serious air pollution during the fermentation process. [0003] The black soldier fly (black soldier fly, Hermetia illucens L.), which looks like a wasp, is a large diptera Soldier fly insect. The adult black soldier fly is about 13-22mm in length. It was first described and named by Linnaeus in 1738. Its larvae feed on decaying organic matter and animal manure in nature. Black soldier fly larvae concentrate on animal manure, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/02A23K10/20A23K20/147C05F3/00C02F101/30C02F103/22
CPCA23K10/20A23K20/147C02F11/00C02F11/02C02F2101/30C02F2103/22C02F2303/02C02F2303/04C02F2303/06C02F2305/06C05F3/00Y02A40/20
Inventor 江昊金连军
Owner 上海纳德生物科技有限公司
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