47results about How to "No aeration required" patented technology

The invention discloses a bioreactor for efficiently and economically synchronously removing nitrate nitrogen and ammonia nitrogen. A water distribution area, from bottom to top, is sequentially provided with a sludge discharge pipe and a water return-inlet pipe, a transverse partition plate is respectively arranged between the upper end of a short-range denitrification area and the bottom of an anaerobic ammonia oxidation area and between the upper end of the anaerobic ammonia oxidation area and the bottom of a separation area, the upper end of the short-range denitrification area and the bottom of the anaerobic ammonia oxidation area, as well as the upper end of the anaerobic ammonia oxidation area and the bottom of the separation area, are respectively connected through a flange, the two transverse partition plates are respectively provided with a sludge guide pipe and a liquid guide pipe, the upper part of the short-range denitrification area and the upper part of the anaerobic ammonia oxidation part are respectively provided with a gas pulse tube, the short-range denitrification area and the anaerobic ammonia oxidation area are respectively filled with a ball packing layer, the side wall of the separation area, from bottom to top, is sequentially provided with a sludge discharge outlet, an overflow tank and a water outlet, the center of the separation area is provided with a double-effect three-phase separator, the side wall of the middle part of the double-effect three-phase separator is provided with a return pipe, and the upper part of the double-effect three-phase separator is provided with a gas collecting connecting pipe and a gas exhaust pipe. According to the invention, an effect of simultaneous denitrification and carbon removal is achieved without aeration; due to the adoption of pulse exhaust, the floating loss of sludge is controlled; because the double-effect three-phase separator is provided, gas, liquid and solid phases are effectively separated.

The invention discloses a process for treating high-concentration nitrate and ammonia-nitrogen wastewater by using sludge fermentation liquor as a carbon source through series connection of short-cut denitrification and anaerobic ammonia oxidation, and belongs to the field of sewage treatment. The device comprises a sludge fermentation tank, a PD-SBR reactor, an AMX-SBR reactor and the like. The method comprises the following steps: the residual sludge is fermented under a medium-temperature alkaline anaerobic condition, and converting refractory organic matters into easily degradable organic matters; denitrifying bacteria perform short-cut denitrification by utilizing volatile fatty acid in the fermentation liquor, and nitrate is converted into nitrite; and effluent and high-ammonia-nitrogen wastewater enter an anaerobic ammonium oxidation film reactor together for autotrophic nitrogen removal, and the polyurethane sponge filler is used for holding anaerobic ammonium oxidation bacteria. According to the method, the aeration energy consumption is reduced, the sludge fermentation liquid is used as the external carbon source, a high-quality carbon source is provided for denitrification, sludge reduction is realized, the sludge treatment cost and the external carbon source addition cost are reduced, stable nitrite accumulation is realized by short-cut denitrification, and synchronous treatment of high-nitrate wastewater and high-ammonia-nitrogen wastewater is realized by combining anaerobic ammonia oxidation.

The invention provides integrated equipment of a miniature biological rotating disc. The integrated equipment consists of an equipment tank body, a biochemical unit, a settlement unit, a sludge discharge unit and a protecting cover. The integrated equipment has the advantages that on the basis of guaranteeing the stable water drainage and standard reaching, and meeting the whole assembly and installation conditions, each process section is performed with optimized combining design, and the space structure is reasonably utilized to integrate into the integrated equipment; the equipment is automatically controlled, so the unmanned-watching running for a long time at site is guaranteed, and the integrated equipment is suitable for dispersive small-scale sewage treatment of villages and towns.

The invention relates to a zonal vertical current artificial wetland system with a reinforced denitrification function, which comprises an upper layer and a lower layer. The upper layer is a nitrification reinforcing zone; the lower layer is a denitrification reinforcing zone; the upper layer comprises a water distribution pipe, a wetland fine filler zone, reoxygenation reinforcing and solid source supplementing pipes, an ammonia nitrogen adsorption-regeneration zone and wetland plants; the lower layer comprises a gravel transition layer, a solid carbon source filling zone, a wetland filler zone, a water collecting zone, water collecting pipes and a siphon drainage pipe; the water collecting pipes are positioned in the water collecting zone and are positioned at the bottommost layer of the wetland system together; the wetland filler zone, the solid carbon source filling zone, the gravel transition layer, the ammonia nitrogen adsorption-regeneration zone and the wetland fine filler zone are sequentially arranged above the water collecting pipes; and the wetland plants are planted on the surface layer of a wetland. The system disclosed by the invention has the advantages of strong continuous denitrification capacity, low operation cost, simplicity in maintenance and the like.

The invention discloses a bioreactor for efficiently and economically synchronously removing nitrate nitrogen and ammonia nitrogen. A water distribution area, from bottom to top, is sequentially provided with a sludge discharge pipe and a water return-inlet pipe, a transverse partition plate is respectively arranged between the upper end of a short-range denitrification area and the bottom of an anaerobic ammonia oxidation area and between the upper end of the anaerobic ammonia oxidation area and the bottom of a separation area, the upper end of the short-range denitrification area and the bottom of the anaerobic ammonia oxidation area, as well as the upper end of the anaerobic ammonia oxidation area and the bottom of the separation area, are respectively connected through a flange, the two transverse partition plates are respectively provided with a sludge guide pipe and a liquid guide pipe, the upper part of the short-range denitrification area and the upper part of the anaerobic ammonia oxidation part are respectively provided with a gas pulse tube, the short-range denitrification area and the anaerobic ammonia oxidation area are respectively filled with a ball packing layer, the side wall of the separation area, from bottom to top, is sequentially provided with a sludge discharge outlet, an overflow tank and a water outlet, the center of the separation area is provided with a double-effect three-phase separator, the side wall of the middle part of the double-effect three-phase separator is provided with a return pipe, and the upper part of the double-effect three-phase separator is provided with a gas collecting connecting pipe and a gas exhaust pipe. According to the invention, an effect of simultaneous denitrification and carbon removal is achieved without aeration; due to the adoption of pulse exhaust, the floating loss of sludge is controlled; because the double-effect three-phase separator is provided, gas, liquid and solid phases are effectively separated.

The invention discloses a double-cycle multi-stage anaerobic reaction device, which includes two anaerobic reactors, the anaerobic reactors include a container body (15), and the container body (15) is arranged sequentially from bottom to top. There are water distributor (2), water inlet pipe (1) leading to water distributor (2), primary three-phase separator (3), secondary three-phase separator (6), outlet pipe (11) and rotary Flow gas-liquid separator (10), the top of the cyclone gas-liquid separator (10) is provided with a biogas outlet pipe (8) leading to the outside, and a water distributor (2) and a three-phase separator (3) are provided A fluidized bed reaction chamber (14), a deep purification reaction chamber (4) is provided between the primary three-phase separator (3) and the secondary three-phase separator (6). The invention has both internal circulation and external circulation, and has the advantages of power saving, less sludge, high treatment volume load rate, space saving, strong impact load resistance, etc., and is suitable for high-concentration and low-concentration organic industrial wastewater.

The invention discloses a composite microbial agent for strengthening anaerobic degradation of propionic acid and a construction method for the composite microbial agent. The composite microbial agentcomprises Syntrophobacterfumaroxidans and Geobactorsulfurreducens. According to the composite microbial agent, a syntrophism symbiosis system for strengthening the degradation of the propionic acid is constructed through activating the Syntrophobacterfumaroxidans and the Geobactorsulfureducens, taking an anaerobic bottle inserted electrode as an experimentation mode, and adding an activating bacterial solution into an anode chamber; the composite microbial agent can be applied to a sewage treatment process; and the method has the advantages of simple structure, flexibility in operation, rapidness in start-up, stability in operation, no need of aeration, low operating cost and the like, and optimal conditions for degradation of the propionic acid can be regulated and controlled through a pH value, ammonia nitrogen and an initial propionic acid concentration value.

The invention discloses an aeration-free external circulation completely autotrophic nitrogen removal over nitrite device. Wastewater in a water inlet and outlet tank is fed from the bottom of a contact oxidation tank through a peristaltic pump and a connecting pipeline, sufficiently contacts with microorganisms attached to environment-friendly polyethylene combined packing in the contact oxidation tank and then is discharged from the top of the contact oxidation tank, and effluent is pre-aerated by a drop aeration device arranged on the upper portion of the water inlet and outlet tank througha connecting pipeline and reenters the water inlet and outlet tank. The invention further discloses a rapid starting method of the aeration-free external circulation completely autotrophic nitrogen removal over nitrite device. completely autotrophic nitrogen removal is realized, an additional carbon source and aeration are omitted, and running cost is saved.

The invention relates to an aeration-free biological desulfurization system and a treatment method. The aeration-free biological desulfurization system comprises an absorption tower, a biological oxidation reactor and a sulfur separator, the biological oxidation reactor comprises an ORP value detector, a pH value detector and a temperature detector, the ORP value detector, the pH value detector and the temperature detector are all connected with a biological oxidation reactor body, and an aeration device is not arranged; hydrogen sulfide is absorbed by alkali liquor in an absorption unit to form hydrosulfide, a high-sulfur solution containing the hydrosulfide enters a biological oxidation reactor, the hydrosulfide is firstly oxidized into elemental sulfur by sulfur-oxidizing microorganismson the surface layer of the solution, elemental sulfur particles are subjected to sedimentation and gravity separation in a sulfur separator, and a regenerated solution returns to an absorption tower, and the absorption cycle is started. Dissolved oxygen in a surface solution of the biological oxidation reactor is just provided for appropriate oxidation-reduction potential of microorganisms, hydrosulfide is oxidized into elemental sulfur, aeration is not needed, and the operation cost of biological desulfurization is greatly reduced.

The invention relates to a method for synchronously removing carbon, nitrogen and sulfur in wastewater, and aims at solving the problems that the prior art is complicated in process, requires tremendous project investment and can not be widely used in the field of sulfur-containing and nitrogen-containing organic wastewater treatment. The method comprises the following steps: (I) acclimating the sludge rich in facultative denitrification desulfurization microorganisms; (II) introducing the waste liquid to be treated and finishing synchronous removal of carbon, nitrogen and sulfur. The method provided by the invention is widely applicable and simple in process, avoids secondary pollution, saves the floor area and requires low operation cost, and is used for synchronously removing carbon, nitrogen and sulfur in wastewater.

The invention relates to a sewage treatment device for synchronically removing sulfur, nitrogen and carbon and for recycling elemental sulfur, which relates to the sewage treatment device, and solves the problems of the prior process for treating the sewage containing the nitrogen and the sulfur that the elemental sulfur is difficult to recycle and the recycling rate is low. A reactor is arrangedinside an elemental sulfur collection container, a tee joint is installed on the bottom part of the elemental sulfur collection container, the lower end surface of the reactor is communicated with anupper end port of the tee joint, a left end port and a right end port of the tee joint pass through two side walls of the elemental sulfur collection container to be exposed outside, a discharging port of a water inlet pump is communicated with the left end port of the tee joint, and the right end port of the tee joint is communicated with the side wall on the upper end of the reactor through a backflow pump; and an elemental sulfur discharging pipe is communicated with the lower end wall of the elemental sulfur collection container. The device has the effect that the generated elemental sulfur can be recycled in high efficiency, so a great amount of elemental sulfur during the reaction process of the reactor is precipitated inside the bottom part of the elemental sulfur collection container without influencing the running effect of the reactor, and the recycling efficiency of the elemental sulfur is high and can reach 80 percent.

This invention relates to method and reactor for removing organic matters, sulfides and nitrates from wastewater simultaneously. The method solves the problems of high cost and easy secondary pollution faced by the present technique in treating sulfur and nitrogen-containing wastewater. The method utilizes sulfur-autotrophic denitrifying bacteria and sulfur-heterotrophic denitrifying bacteria biological membrane to treat wastewater. The reactor is a fixed bed biological membrane reactor. The filler is lava or activated carbon. A reaction zone is formed at the middle and lower part of the inner cavity of the cylinder, while a precipitation zone is formed at the upper part. A gas collection zone is formed at the middle and lower part of the inner cavity of the gas collection chamber, while a water storage zone is formed between the bottom of the gas collection chamber and the flush weir. The method has such advantages as high treatment efficiency, no secondary pollution, low running cost, and low sludge productivity. The reactor has such advantages as small floor area and easy operation. The reactor can be continuously operated, and can be solely used or used as one treatment unit for wastewater treatment.

The invention relates to a self-breathing microbial fuel cell device based on anode array distribution. The device comprises a casing, a device sealing cover, a drive mechanism, an anode chamber and an outer circuit, wherein the device casing comprises a self-breathing cathode and a support mechanism, the support mechanism is divided into a conductive part and an insulating part, a water inlet, awater outlet and drive shaft holes are formed in the side wall of the casing respectively, the cathode wraps the anode chamber, a plurality of anode arrays are distributed in the anode chamber, a thread structure is processed at the bottom of each anode, the thread structures form worm drive with drive shafts, each electrode is connected with a wire, and the wires penetrate through the device casing or the sealing cover to be connected with the drive mechanism. The self-breathing microbial fuel cell device has the advantages as follows: through cooperation of array distributed anodes and self-breathing cathodes, attachment of electricity-producing bacteria is promoted, internal resistance of a cell is greatly reduced, and the sewage is purified and can produce electricity.

The invention provides a domestic sewage treatment system utilizing the solar energy and a treatment method of the same. The system comprises a solar system, an adjustment pool, a tower-type biofilter and a land treatment system. The method comprises the steps of utilizing the solar energy as a power for sewage circulation, sequentially treating the domestic sewage by the three phases of the adjustment pool, the tower-type biofilter and the land treatment system, and then draining water which reaches the standards. According to the system and the method provided by the invention, compared with the traditional biotreatment technology, microorganisms are fixed on carriers, thus preventing the loss of the microorganisms and reducing the dosage of the microorganisms; the microorganisms are high in activity, fast in reproduction, wide in adaptability and high in degradation capacity, thus increasing the biotreatment efficiency; meanwhile, the circulation of the sewage in the tower-type biofilter is carried out by utilizing the solar energy, thus reducing the running cost.

The invention relates to a method of generating power and removing pollution by using a self-breathing microbial fuel cell. Pretreatment sewage flows into an anode chamber through a water inlet; organic matter in the water generates electrons and protons due to a synergistic effect of suspended microorganisms and anode surface attached microorganisms in the anode chamber; the proton are migrated to a cathode via a proton exchange membrane; the electrons reach a cathode via an external circuit; the self-breathing cathode gives a triphase reduction reaction by taking oxygen as an electron acceptor to form a complete current loop; a fuel cell device generates electric energy to drive an external load and an engine to operate during sewage treatment; the engine drives a worm transmission mechanism to allow the anode to rotate axially to promote electron transfer and uniform microorganism distribution in the anode chamber; the treated sewage or waste is discharged through a water outlet; and the sewage in the anode chamber is replaced periodically. The method has the advantages that the array distribution anode is matched with the self-breathing cathode; bacterium attachment is promoted; internal resistance of the battery is greatly reduced; the sewage is purified; and the power is generated at the same time.

The invention discloses a composite bacterial agent for strengthening the anaerobic degradation of butyric acid and a construction method thereof. The composite bacterial agent includes fatty acid oxidizing bacteria Syntrophomonas wolfei and electrogenic bacteria Geobactorsulfurreducens. The present invention activates the fatty acid oxidizing bacteria Syntrophomonas wolfei and the electrogenic bacteria Geobactorsulfureducens, uses the anaerobic bottle to insert the electrode as the experimental mode, and adds the activated bacterial liquid into the anode chamber to construct a mutual symbiosis system that strengthens the degradation of butyric acid, The composite bacterial agent can be used in the process of sewage treatment; this method has the advantages of simple structure, flexible operation, quick start, stable operation, no need for aeration and low operating cost, and can be controlled by pH value, ammonia nitrogen and initial butyric acid concentration. Optimal conditions for regulation of butyric acid degradation.

The invention discloses a composite bacterial agent for strengthening anaerobic degradation of propionic acid and a construction method thereof. The composite bacterial agent includes fatty acid oxidizing bacteria Syntrophobacterfumaroxidans and electrogenic bacteria Geobactorsulfurreducens. The present invention activates the fatty acid oxidizing bacteria Syntrophobacterfumaroxidans and the electrogenic bacteria Geobactorsulfureducens, uses the anaerobic bottle to insert the electrode as the experimental mode, and adds the activated bacterial liquid in the anode chamber to construct a mutual symbiosis system that strengthens the degradation of propionic acid. The composite bacterial agent can be used in the process of sewage treatment; this method has the advantages of simple structure, flexible operation, quick start, stable operation, no need for aeration and low operating cost, and can be adjusted by pH value, ammonia nitrogen and initial propionic acid concentration. Optimum conditions for acid degradation.