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 an efficient sewage treatment process and device based on electron current directional adjustment and control and belongs to the technical field of sewage (wastewater) treatment. In the process, an anaerobic fermentation electron generation chamber, a heterotrophic-autotrophic denitrification chamber and an aerobic membrane separation chamber are included. After low-concentration organic sewage enters the anaerobic fermentation electron generation chamber, particulate organic matter and part of dissolved organic matter are intercepted and adsorbed by filler and form an extracellular current under the action of microorganisms used in a follow-up autotrophic denitrification process. Meanwhile, by the utilization of a microfiltration / ultrafiltration membrane separation process, the load in the sewage treatment process is increased, solid-liquid separation efficiency is guaranteed, and outflow water quality meets high-standard sewage (wastewater) treatment reuse requirements. According to the process, the removal effect of nutrient elements including nitrogen is intensified by adjusting the flowing direction of the electron current in the organic sewage treatment process, the system sludge yield is lowered, and membrane filtration pollution is relieved. Through the process, the low-concentration organic sewage can be treated efficiently at normal temperature (higher than 15 DEG C), and running energy consumption for sewage treatment is lowered remarkably.

The invention discloses a multi-excitation-wavelength spectrometer type fluorescence laser radar system which comprises a multi-wavelength laser emission system, a signal frequency division system anda data storage and display system. According to the invention, a plurality of wavelength lasers are simultaneously emitted into the atmosphere to alternately excite organic matters in atmospheric particulates and obtain fluorescence spectra, the spectra obtained by exciting the same organic matter by the lasers with different wavelengths are different, and the characteristics of components, concentrations and the like of the organic matters in the atmospheric particulates are effectively explored by analyzing each excitation and emission fluorescence spectrum matrix diagram. The continuous observation can be achieved, manual sampling is not needed, data reliability, accuracy and real-time performance are improved, a basis is provided for meteorological environmental protection departmentsand the like to master atmospheric particulate organic matter changes in time, it is convenient for the meteorological environmental protection departments and the like to find abnormal changes in time and take effective measures for response, and the simultaneous detection of multiple instruments is achieved; the circulation condition of atmospheric particulate organic matters can be mastered, and possibility is provided for early warning.

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.

The invention provides a method for simultaneously detecting particulate organics and dissolved organics in water body, comprising the following steps: firstly, collecting water body samples and setting an excitation wavelength, an emission wavelength and a scanning speed of a fluorescence spectrophotometer; secondly, determining excitation-emission three-dimensional fluorescence spectrums of all samples and ultrapure water; thirdly, subjecting the three-dimensional fluorescence spectrums of the samples to raman scattering correction by using the three-dimensional fluorescence spectrum of the ultrapure water; fourthly, exporting a data matrix of the three-dimensional fluorescence spectrums obtained by the raman scattering correction for data conversion; fifthly, subjecting data obtained after the data conversion of all samples to principal component analysis; sixthly, identifying components of organics in water by utilizing a factor score matrix graph which is drawn from a factor score coefficient matrix through conversion; seventhly, calculating relative content of the particulate organics and the dissolved organics in the water body based on principal component analyzing results. The method provided by the invention has the advantages of little demand for samples, high detection sensitivity, no damage to sample structure and environmental protection.

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.