71results about How to "Reduce dissolved oxygen concentration" patented technology

The invention provides a higher rust preventive effect than alkaline water prepared by conventional electrolysis, and washing water compatible with safety and washing quality. In the method of preparing washing water, a process by which sulfate ions in raw water are made to be <=0.2 mmol/dm3 and /or chloride ions <=0.5 mmol/dm3, calcium ions <=1.0 mmol/dm3, and Mg ions <=1.0 mmol/dm3, is performed and subsequently a process by which sodium carbonate concentration in raw water is made to be 0.1-10.0 mmol/dm3, is performed, and then this water is electrolyzed to obtain washing water having >=8.0 and <=13.0 pH and /or 100 mV to 1,000 mV oxidation reduction potential.

The invention discloses a sludge dephosphorizing and denitrifying biological disposing method, which comprises the following parts: adsorbing pool, sedimenting pool, regenerating pool, selecting pool, dephosphorizing pool, nitrated pool, denitrifying pool and hydrolytic acidifying pool, wherein the effluent enters in the adsorbing pool firstly to blend with reflux sludge in the selecting pool; the blending liquid is drained from adsorbing pool to sedimenting pool to separate mud from water; the supernatant enters into nitrated pool to denitrify in the denitrifying pool to drain; the sediment part of sludge is proceeded anaerobic hydrolysis in the hydrolytic acidifying pool; the supernatant is inputted into dephosphorizing pool to proceed chemical dephosphorizing; the other part of sediment pool refluxes sludge into selecting pool under anaerobic environment; the composite liquid from selecting pool is input in the regenerating pool; the other part supernatant from dephosphorizing pool is input in the denitrifying pool to accelerate denitrifying action.

3 The present invention relates to an improved UCT process and its equipment, belonging to the field of sewage treatment technology. It is characterized by that the aerobic reactor is divided into two stages, between two aerobic reactors a deoxygenation reactor is set, every aerobic reactor is equipped with an independent gas flow controller. In first aerobic tank it can control low dissolved oxygen to implement short-range nitrification and make the ammoniac nitrogen be oxidated into nitrite, in second aerobic tank it applies high dissolved oxygen to ensure that the residual nitrite can be oxidated into nitrate. Said equipment also includes a second anaerobic reactor. Said invention also provides the concrete function and action of said deoxygenation reactor and said second anaerobic reactor.

Provided is a bubble generating mechanism that does not use a complicated air mixing mechanism and generates micro-bubbles in a sufficient quantity. A flow path (2) that connects an inflow opening (2n) that opens on an inflow end and an outflow opening (2x) that opens on an outflow end is formed in a state passing completely through a member main body (6), and a constricted part (2c) of which the flow-through cross-sectional area is smaller than the inflow opening (2n) is formed in a position within that flow path (2). Colliding parts (3) that further reduce the cross-sectional area of the flow path in the constricted part (2c) are disposed in the constricted part (2c) in a state that divides the axial plane of the flow path (2) into three or more segment areas (2e).

The invention provides a method used for detecting the oxygen demand for quick biochemistry by cultivating microorganism in situ. The in-situ microorganism culture is defined as that the pipeline carrying current in a flowing system is taken as a carrier, the flowing of water sample containing organic matters and microorganism is taken as precondition, the microorganism in the water sample is adsorbed onto the surface of the internal wall of the pipeline. The pipeline carrying current in the flowing analysis system is taken as the carrier to adsorb on the microorganism on the spot in the environment water; on the one hand, the adsorbed microorganism has idiosyncratic degradation capability on the organic matter in the water and the obtained result has higher pertinence; on the other hand, the adsorption state of the microorganism on the internal wall of the pipeline is most approaching to the natural surviving state and the activity of the microorganism is kept to the most extent. The service life of the existing biological film of a BOD sensor is not more than 3 months and the maintenance is troublesome. in the method, the culture of microorganism in laboratory is saved, and a plurality of problems such as preparation, storage, activation and the like of the microorganism film; furthermore, the adsorbed microorganism can always keep the physiological activity state during the continuous analysis and testing process, therefore, the method has extremely wide application prospect.

The invention provides a device and a method for starting micro expansion of sludge in the anoxic/aerobic biological denitrification process, and belongs to the technical field of sewage treatment. The method is characterized in that in an anoxic/aerobic biological denitrification system, the micro expansion of the sludge is started, the micro expansion of the sludge is controlled within a certain limit, treatment effects are optimized and energy consumption is saved. The proposal of starting the micro expansion of the sludge in the anoxic/aerobic biological denitrification system comprises: 1, triggering the micro expansion of the sludge only by low dissolved oxygen, and including two starting modes for gradually lowering the dissolved oxygen concentration and suddenly lowering the dissolved oxygen concentration; and 2, starting the micro expansion of the sludge in the mode of the low dissolved oxygen combined with the low load. The device and the method are mainly used to optimize operational effects of the anoxic/aerobic biological denitrification sewage treatment system, namely under the conditions of lowering the dissolved oxygen concentration, saving aeration rate and saving energy, the pollutant-removing rate is ensured to meet the standards, and simultaneously the concentration of effluent suspended matters is greatly reduced.

There are provided a method and apparatus for manufacturing hydrogen-containing drinking water that can fill a packaging container with hydrogen-containing water while suppressing the change of the dissolved hydrogen concentration of the hydrogen-containing water to a low level.

A method of continuously manufacturing hydrogen-containing drinking water includes (A) a deaeration step, (B) a hydrogen dissolving step, (C) a filling step, and (D) a sealing step. Pressure is applied to water flow channels corresponding to hydrogen-containing water, which is to be injected to a packaging container in the filling step, from purified water that is to be supplied to the deaeration step. The filling step includes: a preparation stage of supplying hydrogen-containing water, to which pressure is applied, into a filling device; a deaeration stage of removing gas, which is present in the packaging container, after connecting the packaging container to the filling device; an injection stage of directly injecting the hydrogen-containing water, to which pressure is applied, into the packaging container; and a discharge stage of discharging hydrogen-containing water, which remains in the filling device, into the packaging container by introducing pressurized air into the filling device. The method further includes a step of immediately proceeding to the sealing step (D) when the injection port and the filling port are disconnected from each other.

The present invention discloses a cream manufacturing process, and relates to the field of food production. The cream is composed of the following components in parts by weight: light cream 70-80 parts, vegetable oil 10-20 parts, emulsifiers 1-2 parts, preservative 0.2-0.4 part, thickening agent 0.5-1 part, stabilizing agent 0.2-0.3 part, essence 0.05-0.1 part, table salt 0.5-1 part, honey 0.5-1.2 part, amygdalus persica powder 5-10 parts, vitamin 0.6-1 part and nutrition enhancers 0.8-1.2. The manufacturing process includes raw material preparing, raw material mixing, vacuum degassing and homogenizing, ultra-high temperature sterilizing, cooling, filling and other steps, the preparation process is simple, increases cream value by adding nutrient substances into the raw materials, improves cream taste by adding the amygdalus persica powder, and selects hydrogenated palm-kernel oil as the vegetable oil, potassium sorbate as the preservative, microcrystalline cellulose as the thickening agent and modified starch as the stabilizing agent. The cream is reasonable in proportion, obvious in effect, simple in preparation process and easy to master.

The invention relates to an ecological purification system for strengthening the nitrate nitrogen removal in a low C/N river and lake water body. The system comprises a water volume regulating pond, asewage intercepting apparatus, a carbon releasing pond, a subsurface flow artificial wetland and a submerged plant pond which sequentially communicate along the water flow direction, and a carbon releasing apparatus that can be removed is arranged inside the carbon releasing pond. The carbon releasing pond is arranged in front of the subsurface flow artificial wetland, the agricultural and forestry waste is fully utilized to release a carbon source, the carbon source required for the heterotrophic denitrification of the subsequent artificial wetland system can be supplemented, and the removalefficiency of the nitrate nitrogen by the wetland system is improved. When the carbon source release rate is low or the release is stopped, a carbon releasing bed can be replaced at any time, the optimal design can be carried out according to the feeding water quality, and the operation is more flexible. The submerged plant pond is arranged behind the subsurface flow artificial wetland, the residual carbon source and nutrient concentration can be further reduced, the secondary pollution problem caused by the excessive release of the carbon source is avoided, and the outlet water quality is ensured to reach the standard.

Nitrogen is dissolved in pure water and hydrochloric acid is mixed in this nitrogen-dissolved pure water, thereby creating as a rinsing liquid a mixture liquid whose pH is lower than that of pure water, and thus created rinsing liquid is supplied at nozzles 6 and 25 toward a substrate W. In the case of such a rinsing liquid, the dissolved oxygen concentration in the rinsing liquid is lowered, and it is possible to suppress a rapid increase of the dissolved oxygen concentration in the rinsing liquid as it is immediately after injected at the nozzles 6 and 25. Also suppressed is elution of Si from the surfaces of the substrate.

The invention discloses a device for delaying MBR (membrane bioreactor) membrane contamination and blocking. The device comprises an MBR membrane assembly, an MBR membrane frame body, a moving frame,a driving device and two parallel support rails, wherein the moving frame and the two parallel support rails are glidingly matched; the MBR membrane assembly is placed in the MBR membrane frame body;the MBR membrane frame body is fixedly connected with the lower side of the moving frame; the driving device is fixedly arranged on a connecting beam arranged between the two support rails and can drive the moving frame to do reciprocating movement along the support rails. The invention also provides a method for delaying the MBR membrane contamination and blocking. The MBR membrane assembly vibrates in an MBR by the driving device; vibration water flow is generated; the MBR membrane assembly is continuously flushed; meanwhile, membrane wires mutually collide and rub, so that the contaminationand blocking of the MBR membrane is delayed. The device and method for delaying the MBR membrane ontamination and blocking have the advantages that the cost is low; the energy consumption is low; theeffect of delaying the membrane contamination and blocking is good; the MBR membrane contamination and blocking can be delayed on the premise of ensuring the low-dissolved oxygen concentration environment in the MBR.

The invention provides a sewage aeration monitoring system based on a wireless sensor network. The sewage aeration monitoring system comprises a water quality sensing monitoring device, a base station, a central monitoring terminal and an automatic governor valve, wherein the water quality sensing monitoring device and the base station are arranged on a monitoring site; the base station is connected with a central monitoring terminal; the automatic governor valve is used for adjusting the aeration amount; the water quality sensing monitoring device comprises a plurality of sensor nodes; the sensor nodes are used for monitoring the water quality of the monitoring site, and transmitting corresponding water quality parameter data to the base station; and the base station is used for transmitting the water quality parameter data to the central monitoring terminal. Through adoption of the sewage aeration monitoring system, monitoring of sewage aeration is realized by a wireless sensor network technology.

The invention discloses a sequence fed-batch reactor and biological aerated filter (SFBR-BAF) biological nitrogen and phosphorus removal technology. The SFBR-BAF biological nitrogen and phosphorus removal technology comprises carbon removal, nitrogen removal, and nitrogen and phosphorus removal, and concretely comprises that in a reaction period, sewage is continuously added into an activated sludge reaction tank, the environment of a front SFBR reaction tank is orderly set into an aerobic state and an anaerobic state, the supernatant is discharged by one step after solid-liquid separation in a static settlement stage, and the discharged supernatant is fed into a back improved BAF device, then is treated orderly by an anaerobic section and an aerobic section of the BAF device and then is discharged. The SFBR-BAF biological nitrogen and phosphorus removal technology realizes a good microbe growth environment, solves the problem that high-concentration salts in waste water damage microbes or inhibit microbe growth, solves the problem of mutual inhibition and carbon source contending of microbe mixed culture, solves the problem of BAF biological filter material blocking caused by high-concentration SS, improves a wastewater biotransformation rate, improves total nitrogen and phosphorus removal effects, improves an oxygen utilization rate, and reduces energy consumption and a production cost.

The invention belongs to the field of sewage treatment of an artificial rapid infiltration system, and particularly relates to an intermittent aeration aerobic/anoxic (O/A) type artificial rapid infiltration device which comprises an aerobic zone and an anoxic zone which are adjacently arranged left and right and are isolated from each other, and the aerobic zone comprises a water inlet mixing zone and an aerobic reaction zone from bottom to top; according to the aerobic reaction zone, under intermittent aeration operation, organic matter is converted and degraded under the action of aerobic heterotrophic microorganisms, and under the action of ammoniation and nitrification, a large number of nitrogen elements are converted into nitrate radicals. The anoxic reaction zone is used for denitrification reaction denitrification. By improving the type and grading of the traditional artificial rapid infiltration filler, the structure of the device and the like, the aerobic section and the anoxic section are separated, and intermittent micro-aeration is carried out in the aerobic section so that integrated treatment of organic matter removal, denitrification and dephosphorization is realized, and an energy-saving and efficient treatment device is provided for distributed sewage treatment.

The invention provides an aqueous electrolyte with low dissolved oxygen, a preparation method thereof and an aqueous ion battery containing the electrolyte. The aqueous electrolyte contains a deoxidizing synergist with chemical reducibility, and the deoxidizing synergist comprises one or more of an electrolyte salt, a hydroxylamine compound and a phenol compound. The deoxidizing synergist can be subjected to an oxidation-reduction reaction with free oxygen in the electrolyte, so that the effect of reducing the content of the free oxygen in the electrolyte is achieved, the pH value of the electrolyte can be adjusted, the hydrogen evolution side reaction is inhibited, and an electrode is protected. The aqueous electrolyte can be applied to aqueous lithium ion batteries, aqueous sodium ion batteries, aqueous zinc ion batteries and the like.

The invention relates to a plug flow reaction device for stable operation of a nitrosation-anaerobic ammoxidation technology, and a method thereof. The purpose of the invention is to solve the technical problem of easiness in accumulating nitrates, caused by difficult stable operation of the current mainstream nitrosation-anaerobic ammoxidation technology in the prior art. The device comprises a water inlet tube, a water inlet tank, a water inlet hole, a fixed packing tank, a dissolved oxygen temperature online monitoring probe, a water bath heater, a gallery separator plate, a water outlet weir, a water outlet tank, a water outlet tube and an aeration head. The method comprises the following steps: inoculating with sludge; and 2, starting the device. Intermittent aeration, total aerationamount control, low dissolved oxygen concentration, residual ammonia inhibition and nitrite-oxidizing bacterium generation inhibiting ways are combined to realize the stable operation of the nitrosation-anaerobic ammoxidation technology, inhibit the activity of the nitrite-oxidizing bacteria and avoid the unstable running of a reactor, caused by the accumulation of nitrates.

The invention discloses a fixed carrier-supported biofilm and activated sludge coupled sequencing sewage treatment device and process. The fixed carrier-supported biofilm and activated sludge coupledsequencing sewage treatment device comprises a reaction unit, a water feeding unit and a chemical feeding unit, wherein the water feeding unit and the chemical feeding unit are connected with the reaction unit through pipes; the side surface of the reaction unit is provided with, sequentially from top to bottom, an overflow port, a water drainage port and a sludge drainage port, and the side surface of the reaction unit is also provided with a backflow device for returning sludge-water mixtures at the bottom of the reaction unit to the top of the reaction unit; the inside of the reaction device is provided with, sequentially from top to bottom, carrier filler, a stirring unit and an aeration unit, wherein the carrier filler is fixed in an area above the water drainage port and under the overflow port; the aeration unit is fixed onto the bottom surface of the reaction unit. The fixed carrier-supported biofilm and activated sludge coupled sequencing sewage treatment device and process can meet the special emission limit of effluent water quality, which is specified in Discharge Standard of Pollutants for Municipal Sewage Treatment Plant (Exposure Draft), and can achieve an effluent ammonia nitrogen concentration less than 0.5 mg/L and a total nitrogen concentration less than 10 mg/L.