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Method for preparing composite heterotrophic nitrobacteria water quality modifying solid powder or granule

A technology for water quality improvement and heterotrophic nitrification, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Removal of nitrite, inability to give full play to different bacteria and other problems, to achieve the effect of preventing breeding biological diseases and sudden death, reducing algae density, and reducing eutrophication

Inactive Publication Date: 2009-10-28
无锡绿水之源生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, my country is a country with a shortage of water resources, and the temporal and spatial distribution of water resources is very uneven. With the development of society, the amount of available water resources is decreasing year by year; at the same time, the use efficiency of water resources is not high and waste is particularly common. What is more serious is that the pollution of water resources has not been effectively solved
However, the current nitrifying bacteria products in the field of water quality improvement have more or less problems
First of all, the nitrifying bacteria products of a single strain cannot reduce the concentration of ammonia nitrogen and nitrite nitrogen at the same time: for example, some strains have a removal rate of more than 80% for ammonia nitrogen, but at the same time they will produce a large amount of nitrite, while nitrite The harm of salt to farmed animals in aquaculture ponds is far greater than that of ammonia; in addition, some strains can effectively remove nitrite nitrogen, but the removal effect on ammonia nitrogen is not obvious, so the harm of nitrite cannot be fundamentally removed, because ammonia nitrogen The oxidation product is nitrite nitrogen; secondly, even if it is a compound product of several nitrifying bacteria, due to the unsatisfactory compound ratio or the limitation of culture conditions, these products often cannot give full play to the role of different bacteria in reducing ammonia nitrogen and nitrite nitrogen. effect

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1: laboratory test

[0045] In the simulated experimental sewage pond of 20 cubic meters, when the ammonia nitrogen concentration was 40-50mg / L, after using the solid powder of the present invention of the above-mentioned formula or the granule formulation product for 5 days, the consumption was 0.5Kg / mu.meter water depth, organic matter, The removal rates of ammonia nitrogen and nitrite nitrogen are 88%-91%, 95%-100% and 40%-45%, respectively.

[0046] When the ammonia nitrogen concentration was raised to 80 mg / L, after 5 days using the compound heterotrophic nitrifying bacteria water quality improvement solid powder or granule product of the present invention, the removal rates of organic matter, ammonia nitrogen and nitrite nitrogen in sewage were 71%-75% respectively. %, 80%-85% and 38%-42%.

Embodiment 2

[0047] Embodiment 2: use in a certain vannamei breeding pond in Suzhou, Jiangsu, with an area of ​​5 mu, when the summer high temperature (June to August), the pond water quality is too thick, the water color is not good, and ammonia nitrogen and nitrite nitrogen reach 1.29mg / h respectively in the water quality. L, 0.49mg / L, seriously exceeding the standard, affecting the growth of Penaeus vannamei. At about 10 o'clock in the morning on a sunny day, the compound heterotrophic nitrifying bacteria water quality improvement solid powder or granule product of the above formula is used in the breeding pond, and the consumption is 0.6Kg / mu·meter water depth. Three days after use, the water color improved, from dark green to light yellow-green, and the transparency increased; after five days, the contents of ammonia nitrogen and nitrite nitrogen in the water dropped to 0.53mg / L and 0.10mg / L.

Embodiment 3

[0048] Embodiment 3: It is used in a culture pond of red bream in Yuyao, Zhejiang Province, with an area of ​​5 mu. When the summer temperature is high (June to July), the water quality of the pond is too thick, the water color is not good, and the ammonia nitrogen and nitrite nitrogen in the water quality reach 1.15mg respectively / L, 0.52mg / L, the transparency is only 20cm. At 10 o'clock in the morning on a sunny day, the compound heterotrophic nitrifying bacteria water quality improvement solid powder or granule product of the above formula was used in the culture pond, and the consumption was 0.7Kg / mu·meter water depth. After 3 days of use, the water color improved greatly, from blue-green to light green, and the transparency increased to 32cm. After 5 days, the contents of ammonia nitrogen and nitrite nitrogen in the water body dropped to 0.41mg / L and 0.13mg / L.

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Abstract

The invention relates to a method for preparing a composite heterotrophic nitrobacteria water quality modifying solid powder or granule, and belongs to the technical field of aquiculture technology and ecological environmental protection. The water quality modifying solid powder and granule is prepared by the following steps: mixing Bacillus foecalis alkaligenes CGMCC NO.1.1786 and arthrobacterium CGMCC NO.1282 into mixed bacteria; performing fermentation on the mixed bacteria for 24 to 36 hours in a culture medium in a fermenter at the fermentation temperature of between 28 and 32 DEG C; processing the obtained product into a solid powder or granule after fermentation culture; and preparing the composite heterotrophic nitrobacteria water quality modifying solid powder or granule with the functions of reducing ammonia nitrogen and nitrite nitrogen in a water body. The preparation is convenient to use, is slightly influenced by environmental conditions, has small dosage, can obviously reduce the content of the ammonia nitrogen and the nitrite nitrogen in the pool water body after use, maintains the effect for 10 to 15 days, and can effectively prevent diseases and paroxysmal death of aquaculture organisms and improve the yield and the quality of the aquaculture organisms when simultaneously improving the environmental quality of the pool water quality and the survival conditions of the aquaculture organisms.

Description

technical field [0001] The invention discloses a preparation method of compound heterotrophic nitrifying bacteria water quality improvement solid powder or granule formulation, relates to a water quality improvement product for reducing ammonia nitrogen and nitrite nitrogen in water, and belongs to the technical fields of aquaculture technology and ecological environment protection. Background technique [0002] With the adjustment of rural industrial structure, my country's aquaculture industry has developed by leaps and bounds. In order to increase the aquaculture output per unit of water body, one-sided pursuit of high yield, often excessively increase the stocking density, excessive baiting, and fertilization, resulting in a sharp increase in organic matter, nitrogen, and phosphorus in the water, a large number of algal blooms, a decrease in water transparency, and deterioration of water quality. Excessive decomposition of organic matter in the water not only consumes di...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 王小娟钱志林许骄阳
Owner 无锡绿水之源生物科技有限公司
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