54results about How to "High removal load" patented technology

The invention discloses a process for treating epoxy resin production wastewater. The process comprises: removing oils, suspended particle organic matters, a part of high polymers and toluene in high-salinity wastewater through a cavitation air flotation system, transforming macromolecular organic matters in the wastewater into micromolecular organic matters through an iron-carbon micro-electrolysis reactor, then, oxidizing non-biodegradable and non-chemical oxidable organic matters in the wastewater through a catalytic oxidation reactor under the action of an Fenton reagent, carrying out anaerobic biochemical treatment to reduce the chemical oxygen demand and the biochemical oxygen demand in the wastewater, carrying out aerobic biochemical treatment to anaerobically degrade a part of aerobic organic matters incapable of being degraded by aerobiont into biochemically degradable organic matters, finally, conveying the wastewater into a clean-water reservoir, filtering the wastewater through a multi-medium filter, and discharging the wastewater after meeting the standard. The process disclosed by the invention has the advantages of small energy consumption, high removal load and capability of recycling biogas as an energy source, and the purified water quality meets the emission standard so as to protect the ecological environment.

The invention discloses a method for synchronously removing ammonia nitrogen and nitrate nitrogen in a continuous flow USB reactor through a short-range denitrification reinforcement DEAMOX technology, and belongs to the field of sewage treatment. The method comprises the steps that a USB reactor is inoculated with DEAMOX granule sludge, nitrate nitrogen is converted into nitrite nitrogen through an organic carbon source in fed water in short-range denitrification, ammonia nitrogen in the fed water is removed through the in-situ anaerobic ammonia oxidation effect, and the purpose of efficiently removing nitrogen is achieved by optimizing the mass concentration ratio of nitrate nitrogen to ammonia nitrogen in wastewater and controlling and adjusting the flow of organic carbon source in fed water. The problems that treatment of wastewater containing ammonia nitrogen and nitrate nitrogen is low in treating efficiency and high in energy consumption are effectively solved, aeration consumption in the aerobic stage is not needed, the external carbon source consumption is reduced, the residual sludge yield is low, and the follow-up treating cost is greatly reduced; in addition, the DEAMOX technology achieved in the continuous flow USB reactor has the advantages that the reaction speed is high, nitrate nitrogen produced in anaerobic ammonia oxidation process is removed in situ, and the total nitrogen removal rate and the denitrifying load are high.

The invention relates to a technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms, and the technology is applicable to the purification of low-density, indissolvable and nondegradable organic waste gas. A high-density low-speed air suction way and a domestication way of low flow-rate circuiting liquid are adopted; and during the domestication process, a fungus-bacteria composite organism system with pseudomonas as a dominant bacterium is constructed by use of a pH changing way. A composite organism tower combines two microorganisms of fungus and bacteria, and the diversity of microorganisms can be effectively applicable to the requirements of various indissolvable and nondegradable organics on different bacteria; system resistance is reduced by the introduction of a fungus system; water film resistance is reduced effectively and the mass transfer process of the organic waste gas is accelerated by means of low circuiting flow-rate; an integrated type technological structure is adopted to the fungus and the bacteria, so the processing technology is simplified and the investment cost and operating cost are reduced. The system is high in efficiency of removing the indissolvable and nondegradable organic waste gas and load, and has an extensive applicability.

"A device and method for anaerobic ammonium oxidation coupling heterotrophic denitrification of coal chemical wastewater" relates to a device and method for removing ammonia nitrogen in high-ammonia nitrogen coal chemical wastewater through stable and efficient anaerobic ammonium oxidation coupled heterotrophic denitrification, which belongs to In the technical field of biochemical sewage biological treatment, it is suitable for the treatment of coal chemical wastewater and other high-ammonia nitrogen organic industrial wastewater such as anaerobic digestion biogas slurry, aquaculture wastewater, and monosodium glutamate wastewater.

The invention relates to a method for removing VOCs (Volatile Organic Chemicals) through a microwave radiation synergistic double-liquid phase biological filtering tower. According to the method, a microsyringe and an electromagnetic air compressor are respectively connected with a microwave radiation device inlet through pipelines; a thermocouple is accessed to an Fe3O4 wave absorption material of a microwave radiation device; a biological tower bottom gas inlet is connected with a microwave radiation device outlet; one end of a double-liquid phase spraying system is connected with a sprayingliquid inlet at the top of a biological filtering tower; nutrient substances are provided to microorganisms in the biological filtering tower from a double-liquid phase spraying liquid flowing in; acontainer in which the double-liquid phase spraying liquid is stored and a metering pump for providing power to a double-liquid phase spraying pipeline are arranged at the other end of the double-liquid phase spraying system; the microsyringe and the air compressor are powered on, then VOCs are mixed with the air, and at the same time a vacuum air sucking pump is powered on. By adopting the method, the biological filtering removal capacity is increased, and waste gases with relatively large VOC concentrations can be relatively rapidly removed.

The invention relates to a treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater. The treatment method comprises the following steps that: S100, wastewater enters an anode chamber of a microbial electrolysis cell for anaerobic ammonia oxidation autotrophic nitrogen removal; S200, the wastewater enters an electrochemical advanced oxidation unit after being subjected to denitrification treatment, and refractory organic matters are degraded; and S300, the effluent of the electrochemical advanced oxidation unit enters a cathode chamber of the microbial electrolysis cell for reduction of perchlorate and chlorate so as to reduce the concentration of chlorine by-products in the wastewater. According to the treatment method, ammonia nitrogen removal, (per) chlorate reduction and advanced oxidation of organic matters are organically coupled, a novel microbial electrolysis cell is established by utilizing the electrochemical activity of anaerobic ammonium oxidation bacteria and chlorate reducing bacteria, autotrophic nitrogen removal by a biological anode and (per) chlorate reduction by a biological cathode are synchronously realized, a new technology for treating the high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater through microbial electrolysis cell-electrochemical advanced oxidation is formed, and economic, efficient and green treatment of the wastewater is realized.

The invention relates to a sewage pretreatment device with a slag-removal, coupling and air-driving biological rotating disc integrated structure. The sewage pretreatment device comprises a sewage draining pipeline and a sewage treatment pool. The sewage pretreatment device is characterized in that a partition wall I is arranged in the sewage treatment pool to divide the sewage treatment pool into a slag removal treatment pool and a biological treatment pool from front to back; a water passage I is arranged in the partition wall I, a grid is arranged at the water passage I, and the slag removal treatment pool is communicated with the biological treatment pool through the water passage I; an air-supplanting and oxygen-supplying pipeline and a biological rotating disc are arranged in the biological treatment pool, an air outlet of the air-supplanting and oxygen-supplying pipeline faces to the biological rotating disc, an air inlet of the air-supplanting and oxygen-supplying pipeline is communicated with atmosphere to generate atmospheric pressure difference to drive the biological rotating disc to rotate, and therefore, the biological rotating disc integrated structure with the slag removal, coupling and air driving functions is configured. The sewage pretreatment device is small in occupied area and can be used for effectively separating impurities in sewage and carrying out bio-enzyme catalysis.

The invention relates to the technical field of wastewater treatment, and discloses an ecological treatment device for aquaculture wastewater. The device comprises an adjusting tank and a composite vertical subsurface flow constructed wetland, and the composite vertical subsurface flow constructed wetland is composed of an upstream vertical subsurface flow constructed wetland and a downstream vertical subsurface flow constructed wetland; the composite vertical subsurface flow constructed wetland sequentially comprises an aquatic plant layer, a humic acid modified iron-ore slag filler layer, a fine gravel layer, a volcanic rock layer and a coarse gravel layer from top to bottom; the upstream vertical subsurface flow constructed wetland further comprises an upstream wetland water distribution pipe; and the downstream vertical subsurface flow constructed wetland further comprises a downstream wetland water distribution pipe and a water collection pipe. The invention further provides an ecological treatment process for the aquaculture wastewater. According to the invention, a combined process of the adjusting tank, the composite constructed wetland and a humic acid modified iron-ore slag filler is adopted, and two technologies of a microbiological method and a chemical adsorption method are combined, so that nutrient substances and residual antibiotics in the aquaculture wastewater can be effectively reduced, and the purpose of improving the quality of the aquaculture wastewater is achieved.

The invention discloses a method for removing nitrate in underground water by utilizing hydrogen autotrophic denitrification granular sludge, which comprises the following steps: inoculating the hydrogen autotrophic denitrification granular sludge into a reactor, taking NO3<-> polluted underground water as reactor inlet water, and treating the NO3<-> polluted underground water by using an SBR operation reactor; the operation conditions of the reactor are as follows: the operation temperature is 15.0+/-0.3 DEG C to 30.0 +/-0.5 DEG C; wherein the operation period of each SBR is 35-87min, the water feeding time is 3min, the reaction time is 22-72min, the precipitation time is 8min, and the water discharging time is 2min; wherein the drainage ratio is 0.56; wherein the HRT is 1.0 to 2.5 hours;wherein the inlet water NO3<->-N load is 0.15 to 0.40 kgN/(m<3>. D); wherein the flow of H2 is 61.6 L/d; wherein a pH value is 7.0 to 8.5. The results show that the hydrogen autotrophic denitrification granular sludge reactor provided by the invention can realize efficient and stable removal of low-concentration NO3<-> in simulated underground water.

The invention belongs to the technical field of biological sewage treatment, and particularly relates to a micro filler for water treatment and a preparation method thereof. The micro filler for water treatment comprises a porous micro filler, a metal-based nano-type chemical material and a nitrogen chemical agent. According to the invention, a porous micro filler with proper specific gravity is selected, and a metal-based nano-type chemical material and a nitrogen chemical agent are attached to the surface of the porous micro filler in a dry powder (or solution) mixing and stirring manner by utilizing the characteristic of large specific surface area of the porous filler. The treatment agent has the main functions that the biomass and settleability of the biological tank can be effectively improved; meanwhile, the retention of denitrifying functional bacteria with a relatively long generation period in a water treatment system is facilitated; the flora structure can be adjusted, and the autotrophic nitrogen removal rate of a water treatment biological system is improved; and finally, energy conservation and consumption reduction of a water reclamation plant are promoted.

The invention discloses a multi-chamber fixed-bed biomembrane reactor and a method for treating perchlorate in sewage using the same. The multi-chamber fixed-bed biomembrane reactor comprises a filler column with a water inlet at the bottom and a water outlet at the upper part, wherein the inner space of the filler column is divided into more than or equal to two reaction chambers communicated up and down by a water distribution plate with a through hole; and a water-in pipe is arranged below each water distribution plate. Traditional one-chamber reactor is divided into more than two reaction chambers by the water distribution plate, and matching water inlets are formed in the two reaction chambers respectively; and moreover, the pollutants fully contact with sulfur particles, single dominant bacterial community is realized in the reactor, thus the utilization rate of sulfur is increased, and the generation of hydrogen sulfide gas and sulfate is reduced.

The invention provides a method for treating high-concentration ammonia nitrogen wastewater, wherein the method comprises: S1, filtering; S2, salinization; S3, impurity removing; S4, biological nitrogen removal; and S5, precipitation. According to the present invention, the method of the present invention sequentially comprises salinization with HCl and impurity removing with NaOH, is different from the conventional method firstly performing metal impurity removing with NaOH, can effectively avoid the pollution caused by the NH3 escaping into the air after the NaOH adding, can respectively obtain high-purity NH4Cl and metal hydroxide solids respectively for agrochemical fertilizers and metal refining and purifying, such that the waste caused by the difficulty in the separation after mixingcan be avoided.