NOVELTY - Construction of quick-separating-type sewage treatment system involves using precipitating and decomposing domestic wastewater in septic tank; lifting wastewater into grid well; regulating and balancing water quality, pre-treating, and denitrifying; flowing into quick-separating bio-chemical tank through flow-guide wall; arranging aeration pipe and filling quick-separating bio-chemical tank with quick-separating bio-chemical balls; uniformly guiding treated water flow into water collection tank and intermediate tank; removing suspended solids; and lifting water to water consumption point.    USE - Method for constructing quick-separating-type sewage treatment system (claimed).    ADVANTAGE - The method is simple. The system occupies small floor area and convenient to manage and has high automation degree, low operation cost, and excellent economical and social benefits.    DETAILED DESCRIPTION - Construction of quick-separating-type sewage treatment system comprises using precipitating and decomposing domestic wastewater in a septic tank; lifting wastewater into an artificial grid well for blocking suspended solids; regulating water quantity and balancing water quality in regulating tank and performing pre-treatment and denitrification treatment of wastewater; enabling wastewater to uniformly flow into a quick-separating bio-chemical tank through a flow-guide wall between water distribution tank and the quick-separating bio-chemical tank; arranging an aeration pipe and filling quick-separating bio-chemical tank with quick-separating bio-chemical balls so that pollutants in wastewater can be degraded through metabolism of the microorganism on surfaces of the quick-separating bio-chemical balls; uniformly guiding the treated water flow into water collection tank; guiding the water flow into intermediate tank; removing suspended solids through a quartz sand filter and feeding the water into a reclaimed water tank; and finally lifting water to water consumption point.