4 results about "Endogenous respiration" patented technology

The application discloses a short-range denitrification process nitrous oxide kinetics modeling and verification method, and specifically comprises the following steps: simplifying the ASM3 model, retaining the core biochemical processes and components related to the growth, storage and endogenous respiration of heterotrophic bacteria; expanding the reaction mechanism to construct the biochemical process involved in the short-range denitrification process to produce N2O; constructing a new way of directly using NO2- as an electron acceptor to produce N2O in the endogenous respiration stage of microorganisms; considering different electron donors and acceptors in each biochemical process, constructing a process rate equation; selecting high-quality short-range nitrification-denitrification experimental data published to test the constructed model; taking self-test data as a benchmark, iteratively fitting and calibrating key parameters, so that the model prediction value and the actual measured value are optimally fitted.

The application relates to the sewage treatment technical field and discloses a method for realizing sludge in-situ reduction by using modified biological filler to strengthen A2O process, which comprises the following steps: building an A2O process reactor, inoculating active sludge, and forming an initial liquid phase environment; adding composite modified biological filler and domesticating a biofilm to construct a solid-liquid composite system for strengthening denitrification and pollution reduction; executing preset process parameters to make the solid-liquid composite reaction system enter a benchmark steady state operation; starting closed-loop feedback regulation, monitoring and adjusting an ORP gradient to intervene in microbial metabolism; starting feedforward regulation, monitoring an influent carbon-nitrogen ratio, and supplementing a carbon source with raw water when the carbon-nitrogen ratio is lower than a threshold value; and maintaining low-yield operation of sludge under the synergistic regulation, controlling the total amount and discharging reduced sludge; the application maintains the oxidation-reduction potential gradient between an anoxic tank and an aerobic tank, combines the magnetite action in the composite modified biological filler, induces the metabolic path of microorganisms to deviate to endogenous respiration, and optimizes energy utilization efficiency.

The invention relates to the technical field of sewage treatment, and discloses a method for realizing sludge in-situ reduction by using a modified biological filler reinforced A2O process, which comprises the following steps: building an A2O process reactor, inoculating activated sludge, and forming an initial liquid phase environment; adding a composite modified biological filler and domesticating a biological membrane to construct a solid-liquid composite system for enhancing nitrogen removal and pollution reduction; executing preset process parameters to enable the solid-liquid composite reaction system to enter reference steady-state operation; starting closed-loop feedback regulation and control, and monitoring and adjusting ORP gradient to intervene in microbial metabolism; starting feed-forward regulation, monitoring the carbon-nitrogen ratio of inlet water, and supplementing a carbon source with raw water when the carbon-nitrogen ratio is lower than a threshold value; under cooperative regulation and control, low-yield operation of the sludge is maintained, the total amount is controlled, and the reduced sludge is discharged; according to the invention, the oxidation-reduction potential gradient between the anoxic tank and the aerobic tank is maintained, and the effect of magnetite in the composite modified biological filler is combined, so that the metabolic path of microorganisms is induced to deviate towards endogenous respiration, and the energy utilization efficiency is optimized.

The present application relates to sewage treatment technical field, disclose a kind of underdrain wetland system and the method for relieving wetland blockage.The underdrain wetland system provided by the present application, by additionally adding wetland unit blockage monitoring system, automatically control the water inlet and outlet operating condition of blockage unit, make the organic matter between filler degrade faster when blockage unit low-position operation and promote microbial endogenous respiration to consume extracellular polymer or intracellular component, when water level rises, the blockage is dispersed, facilitate oxygen exchange and nutrient circulation in wetland, provide better environment for the growth of microorganism, facilitate to improve the activity of microorganism, the purification capacity of wetland is enhanced accordingly, can better remove pollutants in water;By water flow to disperse blockage, can prevent wetland from degradation due to blockage, maintain the ecological health and sustainability of wetland;Since wetland blockage is relieved, extend the service life of wetland filler, to a certain extent, the need for artificial cleaning can be reduced, thereby reducing maintenance cost.