12 results about "Aerobic reaction" patented technology

The utility model relates to a wastewater denitrification and desulfurization treatment device which is characterized in that a water distributor is arranged at the lower part of an anaerobic reaction tank of an anaerobic reactor, a three-phase separator is arranged at the upper part of the anaerobic reaction tank of the anaerobic reactor, and a stirrer is arranged on an anoxic reaction tank of an anoxic reactor; an overflow port of the anaerobic reaction tank is connected and communicated with the anoxic reaction tank, a reflux port of the anaerobic reaction tank is connected and communicated with the anaerobic reaction tank through a wastewater reflux pipe, an aerator is arranged at the bottom of an aerobic reaction tank of the aerobic reactor, the anoxic reaction tank is connected and communicated with the aerobic reaction tank, a partition plate is arranged in the settling pond, a water inlet area is arranged on one side of the partition plate, and a settling area is arranged on the other side of the partition plate. A clear liquid outlet pipe is arranged at the upper part of the inclined plate of the sedimentation tank, a communicated clear liquid return pipe is arranged at the front part of the clear liquid valve of the clear liquid outlet pipe, and the clear liquid return pipe is communicated with the anoxic reaction tank. According to the device, the sulfate radical removal rate is high, nitrate in the wastewater can be simultaneously removed while sulfate radicals in the wastewater are removed, and the equipment investment and the treatment cost are reduced.

This invention provides an apparatus and method for recovering nitrous oxide from high-ammonia-nitrogen wastewater using algae-bacteria symbiotic technology. The apparatus includes an aerobic reaction unit and an anoxic reaction unit; the first outlet of the aerobic reaction unit and the inlet of the anoxic reaction unit are connected, and a monovalent anion exchange membrane is installed at the connection point; the aerobic reaction unit is connected to a first gas collection unit via a first gas outlet, and the anoxic reaction unit is connected to a second gas collection unit via a second gas outlet, for recovering nitrous oxide generated in both the aerobic and anoxic reaction units. This invention, by inoculating the aerobic reaction unit with algae-bacteria symbiotic sludge that achieves short-cut nitrification, effectively reduces the aeration energy consumption of short-cut nitrification through microalgae photosynthesis, realizes the recovery of nitrous oxide in the aerobic reaction unit, reduces the denitrification load in the anoxic reaction unit, increases the denitrification conversion rate, and reduces operating costs, embodying a high-efficiency, low-carbon, and environmentally friendly design concept.

This application relates to a landfill leachate treatment device, belonging to the field of landfill treatment. It includes a filter box containing filter plates. One side of the filter box is connected to an anaerobic reactor via a first outlet pipe. One side of the anaerobic reactor is connected to an aerobic reactor via a second outlet pipe. One side of the aerobic reactor is connected to an activated carbon box via a third outlet pipe. The activated carbon box contains multiple activated carbon plates. This application effectively reduces the impact of impurities in the leachate on the overall treatment process.

The application relates to the technical field of rural sewage treatment and resource utilization, and discloses a rural sewage treatment and resource utilization system, which comprises a pretreatment module, a biological treatment module and a deep treatment module; the pretreatment module comprises an adjusting tank and a grating; the biological treatment module comprises an aerobic reactor and an anaerobic reactor; a filter layer and an aeration assembly are arranged in the aerobic reactor; the anaerobic reactor is arranged above the aerobic reactor; a filler layer is arranged at the bottom of the anaerobic reactor; the deep treatment module comprises a sedimentation tank and a filter; water pipes and water pumps are arranged in communication between the adjusting tank and the anaerobic reactor and between the aerobic reactor and the sedimentation tank; the water pipe connected with the aerobic reactor and the sedimentation tank penetrates through the filter and extends to the lower side of the filter; a recycled water storage tank is arranged on the side, away from the biological treatment module, of the sedimentation tank; and the recycled water storage tank and the sedimentation tank are connected with an overflow pipe. The application has the effect of improving the sewage treatment efficiency.

This invention provides a process and strain for removing recalcitrant organic matter and performing deep denitrification treatment on wastewater from Maotai liquor production. The specific process includes introducing wastewater into a regulating tank for water quality analysis; introducing the wastewater from the regulating tank into an anaerobic reactor; and introducing the effluent from the anaerobic reactor into an aerobic reactor, adding *Moraxella rosenbergii* (seawater). Rossellomorea aquimaris The process involves ZC2402-MT oxidation; the aerobic reaction effluent is then fed into an ozone reactor to convert the remaining recalcitrant organic nitrogen into ammonia nitrogen; the ozone effluent is then fed into a BAF (Biological Acid Fluidization) unit to remove remaining COD and perform nitrification; the BAF effluent is then fed into an autotrophic denitrification unit. This invention cultivates highly efficient degrading bacteria for the recalcitrant organic matter portion of liquor wastewater, while simultaneously adjusting the process to ensure that the effluent COD and total nitrogen meet standards, and to reduce costs, providing a more scientific, rational, and effective process for the treatment of liquor wastewater.

The present invention relates to the technical field of water treatment. Disclosed is a single-stage aerobic SBR, comprising a reaction vessel, a water inlet assembly located on one side of the reaction vessel, a sludge discharge assembly located on the other side of the reaction vessel, a suspension plate located at the center inside the reaction vessel, and a suspension tank assembly located at the upper part inside the reaction vessel. The reaction vessel is a hollow structure consisting of a bottom cone and a top cylinder. The single-stage aerobic SBR reacts acclimated and cultured sludge with water, uses a stirring shaft to speed up the reaction between the sludge and the water, and then uses the suspension tank assembly to implement stratified recovery of treated water, so that phosphorus can be efficiently removed when there is a shortage of the concentration of nutrient substances in influent. Moreover, the phosphorus removal process of the single-stage aerobic SBR is a phosphorus removal process that does not require an anaerobic section, exhibits a good phosphorus removal effect, is easy to operate, and is less affected by nitrates. The existing water quality and facility conditions of power plants can meet the requirements of the phosphorus removal process.

The present application relates to a kind of anaerobic micro-aerobic reaction systems without three-phase separator, including reactor and external circulation oxygenation unit, the reactor is from bottom to top including water distributor, secondary sludge-water separator, primary sludge-water separator and exhaust port, the bottom of primary sludge-water separator is connected secondary sludge-water separator by flow guide pipe, for the sludge separated by primary sludge-water separator is input secondary sludge-water separator, the bottom of secondary sludge-water separator is equipped with external circulation pipe, external circulation pipe connects external circulation oxygenation unit, for the sludge separated by secondary sludge-water separator is input external circulation oxygenation unit;The upper portion of secondary sludge-water separator is equipped with drain pipe, for output water production;The external circulation oxygenation unit includes jet, the inlet of jet is connected with external circulation pipe and air pipe respectively, and the outlet is connected with water inlet pipe.

The application discloses a method and device for domesticating salt-tolerant activated sludge, and belongs to the technical field of microbial culture and sewage treatment device. In the prior art, the domestication of salt-tolerant activated sludge is achieved by gradually increasing the salinity, and the obtained sludge has poor genetic adaptability and a long domestication period. The application provides a method for domesticating salt-tolerant activated sludge, which comprises the following steps: inputting fresh sludge with a sludge concentration MLSS of 5000-6000 mg / L and MLSS / MLVSS greater than or equal to 0.8 into a domestication device; the domestication device comprises an anoxic reaction zone and an aerobic reaction zone which are in communication with each other; the concentration of salt in the control system is 3-5%; when the CODcr removal rate is less than or equal to 30%, the CODcr concentration gradient is gradually increased by 500-1000 mg / L in a step-by-step manner through the following methods: increasing the nutrition dosage, increasing the aeration amount of the aerobic reaction zone, returning the sludge in the aerobic reaction zone to the anoxic reaction zone, supplementing fresh sludge, discharging inactivated sludge and the like. The obtained salt-tolerant activated sludge has good genetic property and a short domestication period.

This disclosure relates to a novel bioreactor. The bioreactor includes: a main body, configured as a tank-shaped structure with a reaction chamber, the reaction chamber being provided with upper and lower partition layers and left and right partition layers. The upper and lower partition layers are configured to divide the reaction chamber into an anaerobic reaction chamber and a facultative and aerobic reaction chamber located above the anaerobic reaction chamber. The left and right partition layers are configured to divide the facultative and aerobic reaction chambers into a facultative and aerobic reaction chambers. The upper and lower partition layers are provided with an anaerobic outlet connecting the anaerobic reaction chamber and the facultative reaction chamber. The bottom of the left and right partition layers is provided with a water channel connecting the facultative and aerobic reaction chambers; an anaerobic three-phase separator; an aerobic three-phase separator; and a first aeration device. The bioreactor provided by this disclosure can be based on existing equipment, resulting in a smaller footprint, a more compact structure, and eliminating the need for additional denitrification equipment in the nitrogen removal process.

The present application relates to water treatment and aquaculture environmental protection technical field, and disclose a bypass sulfur cycle coupled seawater aquaculture tail water deep denitrification and phosphorus removal method and system, including main road and bypass double process: S1 solid-liquid separation obtains concentrated solid phase and main road clear liquid;S2 in bypass anaerobic reactor, concentrated solid phase organic matter is hydrolyzed and acidified, and then sulfate reducing bacteria is utilized, and reduced sulfate is generated into sulfide and releases phosphorus, and bypass fermentation liquor is obtained;S3 in side flow chemical phosphorus removal unit, reagent is added, and phosphorus precipitate is generated and recovered in a direction, and sulfur-rich supernatant is obtained;S4 in main road anoxic reactor, main road clear liquid, sulfur-rich supernatant and nitrification reflux liquid complete autotrophic denitrification;S5 in main road aerobic reactor, ammonia nitrogen is oxidized into nitrate, and part of effluent is refluxed.The present application realizes spatial decoupling of electron donor and acceptor, and double sludge age operation guarantees efficiency, and external carbon source is not needed, and denitrification and phosphorus removal and phosphorus resource recovery are realized, and the seawater aquaculture tail water quality is adapted.

This invention relates to the field of wastewater treatment technology, specifically disclosing a method for simultaneously enhancing nitrogen and phosphorus removal using an aerobic granular sludge reactor. The method involves cultivating aerobic granular sludge in a sequencing batch reactor (SBR), then introducing the wastewater to be treated into the reactor and operating it in a SBR manner. Each operating cycle includes an influent stage, an aerobic reaction stage, a sedimentation stage, and an effluent stage. During the aerobic reaction stage, the following strategy is used for segmented control: when the COD concentration in the reactor is higher than a first preset threshold, the dissolved oxygen (DO) concentration is controlled to be 3 mg / L < DO ≤ 5 mg / L; when the COD concentration in the reactor is lower than or equal to the first preset threshold, the dissolved oxygen (DO) concentration is controlled to be 2 mg / L ≤ DO ≤ 3 mg / L. This invention, without setting anaerobic or anoxic operating stages, creates a microenvironment conducive to denitrification and phosphorus precipitation within the aerobic granular sludge through operational regulation, simultaneously improving nitrogen and phosphorus removal efficiency and reducing operating costs.

This application provides a method and system for treating domestic sewage, belonging to the field of sewage treatment technology. The method includes the following steps: S1: The domestic sewage to be treated flows sequentially through an anoxic reaction tank and an aerobic reaction tank, both tanks being filled with multi-metal catalytic functional packing material; S2: The effluent is introduced into a membrane separation tank for sludge-water separation to obtain treated water and sludge; S3: A portion of the sludge generated in the membrane separation tank is returned to the anoxic reaction tank; S4: A portion of the treated water is extracted and introduced into a functional water preparation unit to generate functional water; S5: The functional water is divided into a first path and a second path in a certain proportion, with the first path flowing into the bottom of the membrane separation tank and the second path flowing into the aerobic reaction tank. This invention enhances the nitrogen and phosphorus removal effect through multi-metal catalytic functional packing material, and utilizes the aeration and flushing effect of functional water to alleviate membrane fouling in the membrane separation tank, extending the membrane's service life. The resulting effluent quality is stable and meets current domestic sewage discharge requirements.