RESOURCES RECYCLING ROTATION TYPE METHOD AND SYSTEM FOR TREATING DOMESTIC ANIMAL EXCRETION

摘要

The present invention relates to a resource recycling type livestock excretion treatment method and system wherein livestock excretion treated through the processes of dehydration, aeration and solid-liquid separation is supplied to an algae cultivation bath, is inoculated with microalgae and then cultivated so that nutrient salts such as nitrogen and phosphorus remained in the livestock excretion can be treated promptly and effectively; a gas generated by microorganisms in an aeration bath is supplied as nutrients for cultivating microalgae so that microalgae can be cultivated smoothly, thereby a treatment efficiency can be improved; and a surplus of microalgae can be utilized as resources or can be supplied to the aeration bath, thereby facilitating cultivation of microorganisms. To this end, the resource recycling type livestock excretion treatment method of the present invention comprises: a dehydration step of separating and discharging solid from livestock excrement; an aeration step of supplying air to the livestock excrement from which solid is separated and discharged and thereby cultivating microorganisms; a solid-liquid separation step of separating and discharging pollutants included in the livestock excrement; and an algae cultivation step of cultivating microalgae from the livestock excrement wherein an exhaust gas generated by microorganisms in the aeration step is supplied as nutrients for cultivating microalgae in the microalgae cultivation bath.