TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The step of removing the organic waste by earthworms is to digest the organic waste or settled sludge of the sewage by earthworms: (1) the organic waste is waste produced by food, kitchen waste and excrement produced by household, canteen and catering industry, where the sludge is the sludge produced by treating sewage of food production enterprise and urban domestic sewage; (2) the earthworm feed is a mixture of organic waste, kitchen waste, sewage filter residue, plate and sludge, where the moisture content of the mixture is 60-70%, the oil content is less than 8%, the salt content is less than 0.6%, and the pH value is 6.5-7.5, the feed is fermented for feeding the earthworms, ethyl maltol (EM) is added into the feed for fermenting or EM is added into the feed for directly feeding the earthworms; and (3) a technical flow of feeding the earthworms by the organic waste, such as kitchen waste is clarifying the fresh kitchen wastes and removing the oil, separating the wastes for removing the impurities, crushing and pulping the wastes, subjecting the wastes to solid-liquid separation, fermenting the waste or adding into EM, then feeding the earthworms, where the separated oil spill is simply dehydrated and processed and is introduced to the soap production plant or biofuel production plant, the technical flow of circularly feeding the earthworms by the fish, vegetables and earthworms in a sewage treatment plant is crushing and pulping the plants, mixing with sludge, performing solid-liquid separation, fermenting or adding into EM, and then feeding the earthworms. The step of separating, precipitating and filtering by a dynamic biomembrane is provided with a dynamic biomembrane bioreactor and a settling pond, automatically separating the pollutants in the sewage for forming sludge, filtering and purifying the sludge for forming sewage: (1) the dynamic biomembrane bioreactor is composed of a dynamic biomembrane, and a membrane bioreactor, during the process of filtering and purifying the sewage by the membrane bioreactor, the phytoplankton, the zooplankton, the sewage microorganism and the pollutant gradually form a dynamic biomembrane, when growing to a certain thickness, the biomembrane automatically falls down or falls down when being washed by proper water for forming sludge, where the membrane bioreactor is composed of a water filter non-woven fabric or a water filter felt filter base material of 60-200 meshes fixed on a porous support body, the length of the support body is the same to the width of the pool, the height is 0.3-1.0 m, the distance between the support body and the water level is 0-1 m, and the aeration is not needed, the bottom of the settling pond is hopper-shaped, a pump capable of automatically collecting the sludge and extracting the sludge or an overflow pipe bottom valve is used for cleaning the sludge, the sludge is discharged for 2-5 times each day, EM and various sewage microorganism are grown in the settling pond, the scums on the level of the pond are removed every day, the floating fertilizer-resistant plant is used for absorbing the waste gas from the sewage, the plant covers the water level for 10-40%, and the retention time of the wastewater is 4-15 hours. The step of biologically producing and purifying water is purifying the sewage by plants, aquatic animals and microorganisms, and purifying the water by pipeline cultivation, vertical column cultivation, wall-type cultivation, floating plant cultivation on water level of a water pool, and feeding aquatic animals in the water, where the plant cultivation hole uses a nonwoven fabric for covering the substrate which comprises sand and earthworm cast, the earthworm cast is added per 7-20 d, and the retention time of the wastewater is 30-100 hours, eliminating the organic waste in household, spacecraft and ocean steamship by fish, vegetables and earthworms by pipeline cultivation, vertical column cultivation, wall-type melon, fruit and vegetable or flower cultivation and feeding aquatic animals in a fishpond, a fish tank or a fish bowl, where the residual bait and the excrement are removed for 1-2 times each day, removing the kitchen waste of community or catering industry by fish, vegetables and earthworms by pipeline cultivation, vertical column cultivation, wall-type melon, fruit and vegetable or flower cultivation and feeding aquatic animals in a fishpond, where the residual bait and the excrement in the fishpond are removed for 1-3 times each day, removing the organic waste of kitchen waste treatment station and sewage treatment plant by fish, vegetables and earthworms by phytoplankton on the water level of the pond, feeding aquatic animals for purifying the water, removing the sludge in the pond for 2-5 times each month, where the pipeline cultivation, the vertical column cultivation, and the wall-type cultivation and the phytoplankton on the water level of the pond are managed to the soil less culture, water level cultivation technique and method.