7 results about "Endogenous respiration" patented technology

The invention relates to the technical field of sewage treatment, and discloses a subsurface wetland system and a method for relieving wetland blockage. According to the subsurface wetland system provided by the invention, the wetland unit blockage monitoring system is additionally arranged, and the water inlet and outlet operation conditions of the blockage unit are automatically controlled, so that when the blockage unit operates at a low position, the degradation of organic matters among fillers is accelerated, the endogenous respiration of microorganisms is promoted to consume extracellular polymers or intracellular components, and blockages are dispersed when the water level rises; oxygen exchange and circulation of nutrient substances in the wetland are facilitated, a better environment is provided for growth of microorganisms, the activity of the microorganisms is conveniently improved, the purification capacity of the wetland is correspondingly enhanced, and pollutants in water can be better removed; blockages are dispersed by water flow, so that the wetland can be prevented from being degraded due to blockage, and the ecological health and sustainability of the wetland are kept; and as the wetland blockage is relieved, the service life of the wetland filler is prolonged, and the requirement of manual cleaning can be reduced to a certain extent, so that the maintenance cost is reduced.

The invention relates to the technical field of sewage treatment, in particular to a high-nitrogen wastewater treatment device which comprises a desulfurization wastewater collecting tank, a wastewater adjusting tank and a domestic wastewater collecting tank, the desulfurization wastewater collecting tank and the domestic wastewater collecting tank are communicated with the wastewater adjusting tank, and the high-nitrogen wastewater treatment device further comprises a sludge dewatering system. The sludge dewatering system is also communicated with the wastewater adjusting tank; the high-nitrogen wastewater treatment device further comprises an A / O tank, and the A / O tank further comprises a first-stage A / O tank and a second-stage A / O tank; an A / O tank is arranged, the A / O tank is divided into a first-stage A / O tank and a second-stage A / O tank, two-stage AO is adopted for denitrification treatment, the treatment efficiency is greatly improved, the A / O tank adopts an aerobic and anoxic combined process, endogenous denitrification is completely utilized in a rear anoxic section, MLVSS endogenous respiration is utilized, and NO3-N is used as an electron acceptor to complete the denitrification process, so that the denitrification efficiency is greatly improved, and the treatment cost is reduced. The usage amount of a carbon source can be reduced, so that the production cost is saved.

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 invention provides a method for calculating the carbon emission intensity of a sewage pipe network based on the anaerobic reaction theory, comprising the following steps: S1, determining the biochemical reaction process of organic matter in the sewage pipe; S2, calculating the carbon emission intensity of the water body by the chemical reaction equation; S3: experimentally determining the water quality and key parameters required for the calculation; S4, calculating the carbon emission intensity of the sediment by the anaerobic endogenous respiration reaction equation; S5, determining the key parameters of the sediment endogenous model by laboratory simulation experiments; S6, calculating the overall carbon emission intensity of the pipe network based on the anaerobic reaction process. The present invention can be used for carbon emission accounting of sewage pipe networks under different boundary conditions, and compared with the emission factor method and the actual measurement method, it has stronger applicability and higher accuracy.

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.