14 results about "Biological reactor" patented technology

The utility model relates to an integrated coal-fired power plant heavy metal-containing sewage treatment system and belongs to the technical field of water pollution control. The system is connected with a grit chamber, a microfiltration membrane filter, an ozone catalytic oxidation unit, a photocatalytic oxidation unit, an electrochemical oxidation unit, an ion exchange unit, a magnetic nano adsorption unit and an anaerobic biological filter in sequence through a water inlet through a grid. The anaerobic biological filter is connected with a membrane biological reactor and a reverse osmosis system through an aerobic biological reactor. The utility model system adopts compact design, has small land occupation, low operation cost, stable and efficient treatment effect, and the effluent quality reaches the national discharge standard or reuse requirement. The utility model not only significantly improves the removal efficiency of heavy metal ions, but also realizes energy recovery through sludge anaerobic digestion and biogas power generation, having remarkable environmental benefits and economic value.

This invention belongs to the field of wastewater biological treatment technology and discloses a method for enhancing the treatment effect of a bioreactor using sludge gasification residue. The method includes the following steps: a) drying, grinding, and sieving the sludge gasification residue to obtain sludge gasification residue with a particle size <80 μm; b) modifying the sludge gasification residue with a particle size <80 μm using polyethyleneimine; c) adding the modified sludge gasification residue to the bioreactor. Under anoxic and aerobic conditions, a biofilm forms on the sludge gasification residue, inhibiting filamentous bacterial expansion, promoting sludge floc granulation, and degrading and removing pollutants from the wastewater. This invention utilizes the modified sludge gasification residue, which forms a biofilm on the residue, inhibiting filamentous bacterial expansion, and promoting sludge floc granulation within 20-30 days, shortening the sludge granulation cycle and improving nitrogen and phosphorus removal efficiency.

The present application belongs to the technical field of sewage treatment, and particularly relates to a method for simultaneously improving the denitrification efficiency of sewage and degrading new pollutants. Alcaligenes The present application adopts a new strain of Alcaligenes sp. FDN-09 which is resistant to perfluorinated compounds to carry out large-scale culture, and prepares a high-efficiency functional bacterial agent; under the condition that ammonia nitrogen and new pollutants coexist in sewage, the high-efficiency functional bacterial agent is added in a biological reactor, and the reactor is operated under anoxic and low-oxygen conditions, thereby simultaneously strengthening the removal of ammonia nitrogen and new pollutants in the sewage, and achieving the effect of improving the denitrification of the sewage treatment system while degrading new pollutants. The method of the present application has no secondary pollution to the environment, has high simultaneous degradation rates of total nitrogen and new pollutants, low treatment cost, and low carbon emission. Under the condition that ammonia nitrogen and new pollutants coexist in the sewage, the water quality of the effluent is far lower than the first-level A effluent standard in the modification single of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002).

The present invention relates to a method for treating wastewater in urban wastewater treatment plants that comprises a first step in which urban wastewater is subjected to controlled aeration in a first reactor and passes to a solids settler under the effect of gravity, the water coming out of the settler due to overflowing; a second step of partial nitritation with aerobic granular sludge in a biological reactor, in which the COD (Chemical Oxygen Demand) at values below 125 ppm and the suspended solids at values below 35 ppm are removed from the wastewater, and partial nitritation of the ammonium coming out of the biological reactor with a NO27NH4+ ratio suitable for subsequent autotrophic nitrogen removal; and a third step of anaerobic oxidation of ammonium in a granular ANAMMOX biomass biological reactor.

The present application provides a method for preparing humic acid by activating coal gasification slag, a soil improvement material and its application, and relates to the technical field of resource utilization of coal gasification slag, comprising the following steps: mixing coal gasification slag with organic activation matrix to form a biological reactor; the organic activation matrix comprises at least one of livestock and poultry manure and its compost; the biological reactor is reacted under aerobic conditions, so that the stable carbon structure in the coal gasification slag is biologically activated, and the generation of humic acid and the conversion of fulvic acid to humic acid are promoted, and a soil improvement material is obtained. The present application not only has simple process and low energy consumption, is conducive to the high-value resource utilization of coal gasification slag, but also can significantly improve the content of humic acid and the stability of total humic acid, the product has no obvious ecological toxicity, and is conducive to the improvement of barren soil and the improvement of farmland soil nutrients.

This invention discloses a method for controlling the mixed liquor suspended solids (MLSS) concentration in a bioreactor based on an activated sludge mathematical model, comprising the following steps: S1, establishing and calibrating an activated sludge mathematical model; S2, setting a target MLSS concentration value for the bioreactor and collecting the MLSS concentration within the bioreactor; S3, calculating the current total mass of activated sludge based on the MLSS concentration and the effective volume of the bioreactor; S4, simulating and predicting the net increase in activated sludge volume within the most recent control period using the activated sludge mathematical model; S5, calculating the target sludge discharge mass for the next control period based on the simulation prediction results of the current total activated sludge mass and the net increase in activated sludge volume; S6, determining the sludge discharge flow rate based on the target sludge discharge mass and the real-time measured sludge concentration. This invention solves the problems of response lag, low adjustment accuracy, and poor adaptability to changes in influent load in existing activated sludge wastewater treatment processes.

This invention relates to the field of environmental protection and wastewater treatment technology, specifically disclosing a method for accelerating short-cut nitrification start-up through sludge pretreatment. The method includes: (1) pretreating activated sludge in a biological reactor for 1-20 days in the presence of low-ammonia-nitrogen water to obtain starved sludge; wherein the ammonia-nitrogen concentration of the low-ammonia-nitrogen water is 0-10 mg / L; and controlling the dissolved oxygen concentration of the pretreatment to 0-4 mg / L; (2) contacting the ammonia-nitrogen wastewater with the starved sludge for short-cut nitrification to obtain effluent. This invention provides a method for accelerating short-cut nitrification start-up through sludge pretreatment. By using starvation coupled with oxygen-limiting regulation, it can achieve rapid start-up and steady-state maintenance of short-cut nitrification, and has advantages such as high ammonia oxidation rate and high nitrite accumulation rate, maintaining the activity of ammonia-oxidizing bacteria (AOB) during short-cut nitrification.

The application provides a kind of FSI ‑ The application discloses a method for treating anionic wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: providing an integrated biological reactor, which comprises an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank in sequence along the direction of wastewater flow; the anaerobic tank is provided with a wastewater inlet, and the upper part of the sedimentation tank is provided with a supernatant outlet. After the wastewater passes through the anaerobic tank and the anoxic tank, effective FSI ‑ removal of anions, and the treated wastewater supernatant is discharged from the supernatant outlet arranged at the upper part of the sedimentation tank. The application utilizes microorganisms to degrade FSI ‑ anions in wastewater, and does not need to use or generate a large amount of chemical agents, thereby reducing the pollution to the environment and the use of chemical substances, and achieving efficient and relatively low-cost wastewater treatment.

This application relates to the technical field of ecological treatment devices for domestic sewage, and discloses such devices, including a pretreatment tank, a biological reactor, and a collection tank. This ecological treatment device for domestic sewage, by using a dual-shaft motor, operates when sludge needs to be cleaned from the bottom of the pretreatment tank. This motor causes the transmission rod and the first bevel gear to rotate. Through the meshing of the first and second bevel gears, the rotating shaft and the threaded rod rotate. The movable block limits the movement of the fixed cylinder within the sliding box, thereby moving the scraper. The scraper removes sludge from the surface of the first inclined block. The fixed rod and connecting groove limit the rotational freedom of the scraper, ensuring vertical vertical movement. A drain valve discharges the scraped sludge.

The application discloses an iron-carbon-microorganism coupled integrated internal-circulation sewage treatment reaction device and method, which comprises a reactor body, an iron-carbon micro-electrolysis reaction zone, an anaerobic granular sludge reaction zone and a gas-liquid-solid separation zone are arranged in the reactor body, and a water inlet pipe, a water outlet pipe and a gas outlet pipe are arranged on the reactor body. Iron-carbon fillers are arranged in the iron-carbon micro-electrolysis reaction zone and are used for carrying out iron-carbon micro-electrolysis reinforced treatment on wastewater; anaerobic granular sludge is arranged in the anaerobic granular sludge reaction zone and is used for carrying out anaerobic biodegradation on the wastewater treated by micro-electrolysis; and the gas-liquid-solid separation zone is used for realizing separation of gas, liquid and sludge. The iron-carbon micro-electrolysis reactor and the anaerobic biological reactor are integrated in the same reactor body, so that the iron-carbon micro-electrolysis effect and the anaerobic biological effect are continuously coupled in the same equipment, the filling material is delayed to be hardened, the process flow is shortened, the intermediate transmission loss is reduced, the mass transfer efficiency and the reaction cooperativity are enhanced, and the wastewater treatment efficiency and the device integration degree are improved.

The utility model relates to the technical field of sewage treatment discloses a hot galvanizing assembled aerobic biological reactor, including by inside and outside setting no. The utility model discloses, through hot galvanizing assembled plate combination forms multiple big concentric circle hot galvanizing assembled jar structure, and constitutes the complete set of hot galvanizing assembled aerobic biological reactor, and most auxiliary parts are all processed in the factory and complete, and the quality can guarantee, and the on -the -spot installation period is fast, and the anticorrosion ability is strong, and the construction period is short, and the cost is low, and still can expand its volume at random, and the dismantling, removal is convenient, saves the occupation, makes the main device of sewage treatment engineering equipment reach the effect that advanced in technology, preparation is reasonable, excellent performance, good corrosion resistance, convenient maintenance, and the appearance is beautiful.

This application discloses a wastewater recycling treatment device based on intelligent sensing and dynamic adjustment, comprising: a sedimentation tank, a flocculation feeding structure, a biological reactor, a filter tank, an aeration structure, and a linkage structure. The flocculation feeding structure, which can be elastically squeezed for feeding, is connected to the top of the sedimentation tank. The sedimentation tank, biological reactor, and filter tank are sequentially connected. The air outlet of the aeration structure, which can be pushed to release air, is connected to the bottom of the biological reactor. A stirring structure is installed inside the biological reactor, and the drive end of the linkage structure is connected to the output end of the stirring structure. The linkage structure includes a reciprocating rod that can move linearly back and forth; one end of the reciprocating rod intermittently squeezes the flocculation feeding structure; the other end of the reciprocating rod is slidably sealed within the aeration chamber of the aeration structure. A flow sensor is installed at the inlet of the sedimentation tank, and the flow sensor is connected to the stirring structure via a controller. This application enables intelligent linkage adjustment of wastewater based on real-time operating conditions.

This utility model relates to the field of biological reactor technology, specifically a biological reactor for the degradation treatment of rural domestic sewage, comprising: a reactor body; an aeration device body disposed within the reactor body; a four-way disc fixedly connected to the lower end of the aeration device body; multiple aeration pipe bodies, each fixedly connected to the surface interface of the four-way disc; and multiple cleaning components, each connected to a specific aeration pipe body. Each cleaning component includes a rotating block, a rotating shaft, a cleaning plate, a rotating frame, a spiral blade, and a rotating ring. By using this device, the aeration device body drives the cleaning components during operation, removing accumulated organic or inorganic matter from the circumferential surface of the aeration pipe bodies, thus preventing the accumulation of organic or inorganic matter and avoiding any impact on the aeration effect of the aeration pipes.