Biological enhancer for treating livestock and poultry breeding wastewater and preparation method thereof

Abstract

The invention provides a biological enhancer used for treating livestock and poultry breeding wastewater and having higher pertinence and purification efficiency.The biological enhancer is prepared from a microbial agent, soluble iron salt and soluble cobalt salt, wherein the number of effective living bacteria in the microbial agents is not less than 10 billions / g, the living bacteria include at least bacillus licheniformis, and the weight ratio of the bacillus licheniformis to an iron element to a cobalt element is 1:(0.010-0.085):(0.0010-0.0095).The composite biological enhancer is prepared by analyzing the components of the livestock and poultry breeding wastewater and selectively proportioning the microbial agent, a chemical agent and a biological agent, the components of the livestock and poultry breeding wastewater can be effectively supplemented and improved, the biological activities of biochemical treatment units in a sewage treatment system are improved, biochemical reaction is accelerated, the efficiency of a livestock and poultry breeding wastewater treatment system is improved, and the effluent water quality of the livestock and poultry breeding wastewater is effectively improved.

Description

technical field [0001] The invention relates to a biological agent for wastewater treatment, in particular to a biological enhancer for treating livestock and poultry breeding wastewater and a preparation method thereof, belonging to the field of biological environmental protection. Background technique [0002] There are various treatment processes for livestock and poultry wastewater, but the basic mode of biochemical treatment is mainly anaerobic combined with aerobic treatment. Among them, the aerobic treatment methods mainly focus on the activated sludge method and the contact oxidation method, and some enterprises also adopt the oxidation ditch process, but the COD of the effluent after treatment is still above 500mg / L, and most of the treatments need to add farm The residence time of raw wastewater is generally 15 to 30 days, which causes problems such as huge reactor volume, high energy consumption, and high sludge output, and the treatment effect is not ideal. [0...

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Problems solved by technology

[0004] In the above treatment methods, either only microbial agents are used to supplement the deficiency of microorganisms with degradative functions in livestock and poultry breeding wastewater, but other pollution problems, such as: C / N / P ratio imbalance in the breeding wastewater itself, partial The lack of trace elements and high cellulose content cannot be improved by adding functional microbial agents; or only universal chemical flocculation agents are used to remove particulate matter through flocculation and precipitation. Although this method can achieve the purpose of purification , but the treatment lacks pertinence, and will introduce chlorine ions, sulfate radicals and other substances into the wastewater, resulting in high concentration of metal ions such as iron and aluminum in the precipitate, and there is a potential risk of secondary pollution

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