41 results about "Particulate organic matter" patented technology

A method and device that comminutes particulate organic substances in suspensions of microorganisms in mediums such as wastewaters or sludges of biological sewage treatment plants, whereby the organic substances are subjected to inertial forces in an active chamber as a result of short-term acceleration, immediately followed by deceleration of a carrier medium flowing in a closed flow channel. To generate these inertial forces, the carrier medium is evaporated and subsequently condensed in the active chamber, whereby this change in the carrier medium's aggregate state is achieved by changing the flow speed. Because of the enormous increase of the liquid phase volume upon its transition into the vapor state, the flow speed of the medium concomitantly increases. As a result, extreme acceleration forces are exerted on the loading of the liquid phase, which immediately after condensation of the vapor into the liquid phase revert back into deceleration forces.

The invention discloses a mainstream short-range nitrification and denitrification / anammox system and method, belonging to the technical field of water treatment. Sewage undergoes chemical flocculation and precipitation to capture particulate organic matter, colloidal organic matter and phosphorus; followed by anaerobic hydrolysis and acidification, the organic matter in the wastewater is decomposed into volatile fatty acids and ammonia nitrogen. The next stage is the multi-cycle SBR pool. Through multi-step water inflow and multi-step A / O reaction, denitrification / anaerobic ammonium oxidation is strengthened, nitrite nitrogen is removed in time, and nitrifying bacteria (NOB) substrate deficiency is formed, supplemented by dissolution Oxygen online control and short sludge age eliminate NOB bacteria to achieve stable mainstream short-cut nitrification and denitrification / anammox denitrification. The short-cut nitrification rate of the multi-circulation SBR tank is above 80%, and the removal rates of COD, ammonia nitrogen and TN are 87%, 98% and 88% respectively. The method has the advantages of simple control strategy, strong automation, low energy consumption, less greenhouse gas emissions, good effluent quality, and low sludge output.

The invention relates to a dual-channel water processing method of a factory-like circulating sea water system and belongs to the technical field of fishery facilities and equipment. According to the invention, on the basis of a currently commonly-adopted bio-film process water treating method adopted by a factory-like circulating water aquaculture system, a cowry and algae ecological filtering channel is added in parallel. Nutrition substance in the aquaculture water body can be removed continuously and fouling can be converted to valuable sea products in the form of cowry and algae biomass and the valuable sea products can be moved outside the circulating water aquaculture system by utilizing a harmonious coexistence principle of multi-nutrition-level marine organisms such as sea fishes, shrimps, cowries, algae, sea slugs and the like, utilizing features of rapid growth and reproducible capability of large-scale seaweed and utilizing the capability of shellfishes eating residual feeds, excrement and other organic particles in the aquaculture water. The invention achieves an aim of processing aquaculture waste water at low cost and in high efficiency. Therefore, the method provided by the invention may have a good application prospect in factory-like circulating sea water aquaculture in our nation.

A water feeding and jetting mixed device for a fish pond for aquaculture comprises a pressure water inlet pipe, a diffusion pipe, a mixing pipe and a water outlet pipe which are arranged in succession from upper to bottom; the pressure water inlet pipe, the diffusion pipe and the mixing pipe are horizontally arranged; the water outlet pipe is horizontally arranged; the diffusion pipe is a gradual enlargement pipe with two gradual enlargement sections; an air inlet hole is formed in the cone-shaped circumferential surface of the first gradual enlargement section; the internal diameter of the mixing pipe is D4; the lower end of the pressure water inlet pipe is inserted into the upper end of the diffusion pipe along the axial direction; the upper end of the mixing pipe is inserted into a mixing area of the diffusion pipe along the axial direction; the water outlet pipe comprises three water outlet branch pipes which are arranged in upper layer water, middle layer water and lower layer water of the fish pound; the three water outlet branch pipes are communicated with the middle portion, the lower portion and the bottom of the mixing pipe. The water feeding and jetting mixed device has the advantages of being sufficient in oxygen dissolution, improving water flowing states of high density cultivation, promoting efficient discharging of particulate organic matters, effectively removing carbon dioxide accumulated through respiratory action of fishes in the high density cultivation, improving water quality in a cultivation pond, achieving an energy saving goal and being wide in applicability.