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Blue alga compost and its making method

A production method and cyanobacteria technology, which are applied in the preparation of organic fertilizers, organic fertilizers, fertilization devices, etc., can solve the problems of limited research data on cyanobacteria composting, crop growth and human health and safety risks, algal toxin residues, etc., and improve seed germination. index, reducing the content of cyanobacterial toxins, and improving the effect of water and fertilizer retention

Inactive Publication Date: 2013-07-31
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on composting mainly focuses on the composting and utilization of raw materials such as domestic garbage, urban surplus sludge and poultry manure, and the research data on cyanobacteria composting are very limited.
According to relevant domestic reports, although the aerobic composting process has a certain effect on the degradation of cyanobacteria toxins, there is still a certain amount of algae toxins remaining in the processed product—fertilizer, which will affect crop growth and human health after being applied to farmland. security risk

Method used

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  • Blue alga compost and its making method
  • Blue alga compost and its making method

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Embodiment 1

[0023] Mix the salvaged cyanobacteria with biomass charcoal (wheat straw charcoal, rice husk charcoal) in different proportions. The ratios were 73.4%, 57.5%, and 50.8%, the pHs were 8.31, 8.59, and 9.38, and the C / Ns were 27.9, 19.8, and 23.4. Put the mixture into a 20cm×20cm×34cm foam box, and then put it into an intelligent constant temperature and humidity incubator. According to the change law of aerobic composting temperature, the temperature of the three kinds of composting mixtures were respectively 1 to 16 days, 1 ~11 days, rising from 30°C to 60°C within 1 to 5 days, and then continuously culturing at a high temperature of 60°C for 7 days, then reducing the temperature from 60°C to 20°C within 4 days, and finally cooling at a constant temperature at 20°C Stable for 20 days, artificially set the temperature of the constant temperature and humidity incubator, and carry out aerobic composting. The composting time of three different treatments were 47, 42, 36 days respe...

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Abstract

The invention discloses a blue alga compost and its making method. The making method of the blue alga compost comprises the following steps: mixing blue algae with biomass charcoal to obtain a blue alga-biomass charcoal mixture, and carrying out aerobic composting of the blue alga-biomass charcoal mixture in a constant-temperature and constant-humidity incubator to obtain the blue alga compost. The making method of the blue alga compost reduces the loss of ammonium nitrogen and total nitrogen in the blue alga compost composting process, allows the nutrient contents after composting ending to reach an organic fertilizer standard, reduces the contents of toxins in the blue algae, and improves the seed germination index of a mixed compost. The method has the advantages of simplicity, practicality, safety, environmental protection and substantial effects.

Description

technical field [0001] The invention belongs to the field of biological fertilizers, and relates to a cyanobacteria compost and a preparation method thereof. Background technique [0002] At present, there are many researches on cyanobacteria treatment at home and abroad, and salvage is the fastest way to solve the crisis of cyanobacteria, but the research on the treatment and disposal of salvaged cyanobacteria is relatively lagging behind. Because cyanobacteria cells rupture and release a variety of algal toxins, which pose a serious threat to the safety of drinking water for animals, plants and humans, various cyanobacteria recycling and harmless technologies have emerged as the times require. At present, research on the utilization of cyanobacteria at home and abroad mainly includes preparation of amino acids for feed, extraction of phycocyanin, algal polysaccharide, γ-linoleic acid, biodiesel production, biogas production by anaerobic fermentation, and organic fertilizer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 陶金沙李正东潘根兴李恋卿郑聚锋张旭辉郑金伟
Owner NANJING AGRICULTURAL UNIVERSITY
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