Method for treating high-concentration ammonia nitrogen pig breeding biogas slurry
A high-concentration biogas slurry technology, which is applied in the field of pig-raising biogas slurry treatment, can solve the problems of high raw material costs, reduce production costs, reduce environmental treatment costs, and realize the effects of resource utilization of waste
Active Publication Date: 2015-03-25
JIANGXI ZHONGZAO BIOTECH
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Abstract
A method for treating a high-concentration ammonia nitrogen pig breeding biogas slurry comprises the following steps: (1) performing heat treatment on pig breeding biogas slurry at a temperature of 70-100 DEG C for 10-25 min, cooling and carrying out centrifugation to obtain the high-concentration ammonia nitrogen pig breeding biogas slurry; (2) adding activated permutite into the high-concentration ammonia nitrogen pig breeding biogas slurry obtained in the step (1), adsorbing for 20-30h at the room temperature, and filtrating permutite out to obtain a biogas slurry subjected to permutite adsorption treatment, wherein the adding amount of the permutite is 15-25 g/L; (3) inoculating scendesmus obliquus at the logarithmic growth phase to the biogas slurry subjected to permutite adsorption treatment and obtained in the step (2), enabling the initial OD<680> to be 0.15-0.3, placing the biogas slurry inoculated with the scendesmus obliquus till the temperature is 24-26 DEG C, cultivating for 10-15 days with air and lighting according to the ventilation of 1-2 L/min at a 1000-10000 lx environment, and carrying out solid-liquid separation on the culture, wherein the liquid is the purified biogas liquid, and the solid is an energy microalgae biomass. According to the method, deep purification and resource utilization of the high-concentration ammonia nitrogen pig breeding biogas slurry are realized, so that not only are environmental management benefits obtained, but also the production cost of the energy microalgae is reduced.
Application Domain
Water/sewage treatment by centrifugal separationWaste water treatment from animal husbandry +3
Technology Topic
BiogasChemistry +10
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