Microbial agent for live pig breeding wastewater treatment as well as preparation method and application of microbial agent

Abstract

The invention discloses a microbial agent for live pig breeding wastewater treatment as well as a preparation method and application of the microbial agent. The microbial agent comprises rice husks, biogas residues, calcium oxide and enzyme microorganisms in a certain ratio. The microbial agent comprises the following steps: (1) putting the biogas residues into a pressure cooker, and cooking; (2) uniformly mixing the rice husks and the enzyme microorganisms, and naturally heaping up for fermenting; (3) adding products obtained in the former steps into the calcium oxide, uniformly mixing and performing secondary fermentation to prepare the special microbial agent for the live pig breeding wastewater treatment. The microbial agent is applied to the live pig breeding wastewater treatment. The preparation method is feasible, and easy and convenient to operate; the rice husks after the secondary fermentation contain polysaccharide, crude fat, crude protein and other nutritional substances, can provide necessary nutritional components for microbes, have relatively strong synchronous decarbonizing and denitrogenating effects, and have strong anti-interference capability; according to the preparation method, the problems that in the prior art, certain organic matters, phosphorus, nitrogen and other soluble pollutants cannot be effectively removed and the like are solved, and the first-level B standard of the national urban sewage discharge standard is reached.

Description

technical field [0001] The present invention relates to the field of pig breeding wastewater treatment, in particular to a pig breeding wastewater treatment microbial agent, and also relates to a method for preparing a pig breeding wastewater treatment microbial agent, and also relates to a use of a pig breeding wastewater treatment microbial agent . Background technique [0002] At present, there are three main treatment modes for liquid waste such as biogas slurry and excrement flushing water at home and abroad: returning to the field, natural treatment and industrial treatment. 1) Returning to the field is a traditional and economical disposal method, and the nutrients in biogas slurry and fecal wastewater can be recycled. However, sufficient capacity of farmland is required to absorb fecal wastewater, otherwise, crop production will be reduced and crop failure will be caused, and surface water and groundwater will be seriously polluted. 2) Natural treatment systems suc...

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Problems solved by technology

However, sufficient capacity of farmland is required to absorb fecal wastewater, otherwise, it will cause crop yield reduction and failure, and seriously pollute surface water and groundwater

2) Natural treatment systems such as artificial wetlands and ecological stabilization ponds are often used for retreatment of aquaculture wastewater after anaerobic treatment, but the system requires a large land occupation area; the wastewater treatment effect is greatly affected by temperature, especially in winter, the system effluent Unable to meet emission standards

In actual application, due to the influence of many factors such as the fluctuation of influent water quality and operating costs, the above process still cannot effectively remove nitrogen, phosphorus, pathogenic microorganisms and organic pollutants in sewage, especially for some refractory organic matter, phosphorus, etc. , nitrogen and other soluble pollutants

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