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Application of algae-bacterium symbiotic system in removing pollutants in swine wastewater

A technology for pollutants and wastewater, applied in the field of pig breeding, can solve the problems of reduction and difficulty in meeting the standards, and achieve the effect of reducing emissions and improving resource utilization.

Inactive Publication Date: 2018-11-23
普定县干河农业开发有限公司
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  • Abstract
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Problems solved by technology

However, because microorganisms usually lack sufficient autotrophic inorganic nitrogen metabolism mechanism, nutrients such as ammonia nitrogen cannot be significantly reduced in anaerobic fermentation, and more bioavailable nitrogen forms, such as ammonia nitrogen and total phosphorus, will be generated. It is still sewage with a high pollution load, and it is difficult to meet the standard with the usual treatment. It is necessary to find a suitable method for advanced treatment

Method used

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Embodiment Construction

[0014] The technical solution of the present invention is further described below, but the scope of protection is not limited.

[0015] Embodiment mode:

[0016] Isolate Zona spinosa from pig wastewater, store in 500mL medium, culture on a shaker at 120rpm, set 24H light, light intensity 7000lux, temperature 10-35°C; take microbes cultured to logarithmic growth phase The algae were centrifuged at 8000rpm for 10min, resuspended with ultrapure water, repeated three times, and concentrated for later use. Take 500mL of waste water and place them in 500mL conical flasks, and add microalgae, COD degrading bacteria, compound bacteria, nitrifying bacteria, microalgae-COD degrading bacteria, microalgae-composite bacteria, and microalgae-nitrifying bacteria respectively. , and a blank treatment without additional strains and algae, each group was set up two parallel.

[0017] Through testing, it was found that the symbiotic system composed of additional COD-degrading bacteria, composi...

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Abstract

The invention relates to application of an algae-bacterium symbiotic system in removing pollutants in swine wastewater. The algae-bacterium symbiotic system disclosed by the invention can reduce pollutant discharge, promote algae growth, purify wastewater and improve algae utilization rate simultaneously. The scenedesmus subspicatus-nitrobacteria symbiotic system is suitable for purifying pig farmwastewater.

Description

technical field [0001] The invention belongs to the technical field of pig breeding, and in particular relates to a method for purifying wastewater. Background technique [0002] After anaerobic digestion, pig wastewater still contains a large amount of nutrients such as nitrogen and phosphorus, which can be used as nutrients for microalgae for microalgae cultivation, and most microalgae have resources such as energy, feed, and medicine. Utilization value, the harvested microalgae can be used as raw materials in the pharmaceutical industry, animal feed and biodiesel, etc., especially energy microalgae, because of its low-risk utilization and high productivity, it has become a very important way to solve the current energy crisis and environmental problems. Potential approaches have received much attention in recent years. However, the effect of microalgae alone in treating wastewater is not ideal. When bacteria are added and the algae-bacteria interaction is used to constru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F103/20C02F101/16
CPCC02F3/325C02F3/34C02F2101/16C02F2103/20
Inventor 邓平
Owner 普定县干河农业开发有限公司
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