380 results about "Water organism" patented technology

The invention provides a photoelectrical FenDun method for removing the non-degradable organic substance in water, which combines photochemistry reaction and electrical FenDun reaction to co-treat the organic substance effectively with multiple actions. The invention also provides a device applying the photoelectrical FenDUN reaction to remove organic substance in water, which comprises: the reactor employing shape stable electrode (DSA) as anode, employing activated charcoal as cathode, putting the low pressure mercury vapor lamp closed in the quartz glass tube vertically between the anode and cathode and venting a certain quantity of oxygen to the cathode surface, adding marginal ferrous salt into the organic wastewater with pH being about 3 as catalyst and importing current flow for electrolysis to remove pollutant. The invention oxides and degrades organic substance by using the hydroxyl free radical generated by photochemical reaction and electrical FenDun reaction, the hydroxyl free radical possesses strong oxidability which can oxide organic substance without selection, and is characterized by the complete, fast and effective oxidation and no secondary pollution.

The invention discloses a controlled-release carbon source material for repairing polluted underground water organisms and a preparation method thereof and belongs to the field of underground water repairing. The controlled-release carbon source material comprises a core and a shell wrapping the core, wherein the core comprises the following components in percentage by weight: 40 to 86 percent ofcarbon releasing raw material, 1 to 25 percent of nutritional raw material, 5 to 45 percent of plastic bonding raw material, 5 to 20 percent of high-permeability raw material and the balance of water; the shell comprises the following components in percentage by weight: 10 to 40 percent of carbon releasing raw material, 1 to 10 percent of nutritional raw material, 20 to 80 percent of plastic bonding raw material, 0 to 40 percent of high-permeability raw material and the balance of water; and the controlled-release carbon source material is prepared by a compound formula consisting of the carbon releasing raw materials, nutritional elements and multi-component inorganic combined raw materials. The controlled-release carbon source material meets a microbial nutrition demand and requirementsfor long-time stable material supply during underground water repairing, certain mechanism strength and uniform sphericity; furthermore, the defects of high carbon loss, uncontrollable releasing rateand the like in the conventional carbon source compensation method are overcome; and the continuity of the underground water organism repairing effect is realized.

The invention belongs to the field of sewage treatment and relates to a biological treatment method for high-concentration wastewater with high ammonia nitrogen content, in particular to a biological tannery wastewater treatment system and a treatment method thereof. The biological tannery wastewater treatment system comprises a first-stage gridding aeration tank, a horizontal flow sedimentation tank, a second-stage gridding aeration tank and a radial flow sedimentation tank which are communicated sequentially, wherein the bottom of the horizontal flow sedimentation tank is communicated with a material inlet of the first-stage gridding aeration tank through a backflow pump; and the bottom of the radial flow sedimentation tank is communicated with a material inlet of the second-stage gridding aeration tank through the backflow pump. According to the treatment method, the organic degrading proportion and the denitration function of the system are enhanced by two-stage aeration. The treatment system and the treatment method which are disclosed by the invention has the advantages that the treatment effect is obvious, running maintenance is facilitated, the energy consumption is low, and the treatment cost is low; and obvious economical and beneficial benefits are realized.

The invention discloses a high-efficiency treatment method of ballast water in a ship and a device adopting the high-efficiency treatment method. The high-efficiency treatment method of ballast water in a ship comprises the following steps of 1, removing planktonts and suspended particles in ballast water by a high-efficiency filter, wherein the removed planktonts and the suspended particles have sizes of above 30 to 40 micrometers; 2, based on a branch electrolysis-based inactivation treatment technology, electrolyzing a part of seawater passing through an electrolysis unit into chlorine and hydrogen by the electrolysis unit, wherein the chlorine is fast dissolved in seawater to form sodium hypochlorite, and 3, feeding back the high-concentration sodium hypochlorite solution obtained by the step 2 to a ballast water feeding header pipe so that residual harmful aquatic organisms in the ballast water are killed. The high-efficiency treatment method of ballast water in a ship has the advantages that a technology of high efficiency filtration and branch electrolysis-based inactivation treatment and the equipment suitable for the technology are adopted; a technical flow is simple; a system volume is small; compared with the existing system, the device adopting the high-efficiency treatment method has a floor space reduced by above 30%; because of the utilization of branch electrolysis, a hydrogen generation amount is low so that hydrogen can be removed completely; a potential safety hazard is eliminated; installation is convenient; and safety and reliability are high.

The invention provides a method and system for producing aquatic specie for consumer consumption within a closed aquaculture system. It provides for growing algae in artificial saltwater under controlled conditions in an algae subsystem, feeding the algae to adult artemia for producing small artemia in an artemia subsystem, feeding the algae and small artemia to immature aquatic specie for producing adolescent aquatic specie in an aquatic specie nursery subsystem, and feeding the algae and small artemia to the adolescent aquatic specie to for producing adult aquatic specie in an aquatic specie growout subsystem, which are then harvested. The invention also includes a data acquisition and control subsystem for automated control of the aquaculture system. A unique filtration subsystem accepts waste from the aquatic specie subsystem, pumps the waste through a series of filters, and returns the filtered saltwater to the algae subsystem, the artemia subsystem and the aquatic specie subsystem.

The invention provides a faradic electrical FenDun method of removing the non-degradable organic matter in water, applying the faradic ferro-electricity to the electrical FenDun reaction, the ferrous iron ion dissolving out from the surface of iron electrode through oxidation-reduction reaction and electrochemical faradic reaction in electrolytic process and reacting with hydrogen dioxide generated on the cathode surface, that is FenDun reaction, generating hydroxyl free radical with high effect to degrade the organic matter in water. The invention also provides a device applying the faradic electrical FenDUN reaction to remove organic substance in water, which comprises: the reactor employing shape stable electrode as anode, employing activated charcoal fiber as cathode, putting the iron faradic electrode of certain area between the anode and cathode and venting a certain quantity of oxygen to the cathode surface. Adding organic wastewater with pH being about 3 into reactor and importing current flow for electrolysis to remove pollutant. The invention employs oxidation-reduction reaction and electrical chemical reaction to generate the ferrous iron ion gradually needed for FenDun reaction which reacts with the hydrogen dioxide generated by electrochemical reaction to generate the FenDUn reaction which generates the hydroxyl free radical with high effect to degrade the organic matter in water and realizes the purpose of removing pollutant.

The invention relates to a process control device and a process control method for CAST step-feed advanced nitrogen removal, belonging to the SBR and modified process sewage biological nitrogen removal technical field. The method adopts an integration of an operating mode of feeding for many times and a real-time control system, fully utilizes an organic carbon source in original sewage, saves externally-added carbon source amount to the utmost extent, scientifically and reasonably distributes nitrification and denitrification time of each stage at the same time, adds an anoxic mixing phase, adopts a long various time aerobic / anoxic mode to operate, and uses a real-time process control strategy to realize the time control of aerobic aeration and anoxic mixing. The method can improve treatment efficiency, reduce running cost, and ensure that the anti-shock loading capability of the whole system is greatly improved due to the fact that the on-line real-time process control is adopted and can still accurately control alternative aerobic / anoxic time when the concentration of influent pollutants is greatly changed.

The modular waste water treatment system receives waste water from a waste water source containing organic waste and produces a treated water effluent. The modular system includes bioreactors and a bioreactor support module. The bioreactors receive a waste water mixture from the bioreactor support module and produce treated water substantially free of organic waste. The bioreactor support module is a transportable unit fabricated upon a frame adapted for transport by a truck upon a public roadway. The bioreactor support module includes items of equipment needed for conditioning waste water for intake by the bioreactors, items of equipment for receiving, processing and discharging treated water from the bioreactors and may include other items of equipment for receiving and processing other byproducts from the bioreactors. The transportable bioreactor support module is sized to support the operation of between one and preferably as many as six bioractors. Accordingly, the modular waste water treatment system can be fabricated off site in a controlled shop environment, transported to a site, placed at a site and even later expanded to include additional bioreactors for increased capacity with a minimum of cost, time and effort.

The invention discloses a high-speed water-supply biological aerated filter (BAF) and a method of applying the filter to pre-purify micro-contaminated raw water. The high-speed water-supply biological aerated filter comprises two UBAFs which are symmetrically arranged on two sides of a water distributing channel which is arranged on the upper part of a pipe rack where pipes are arranged. The water distributing channel comprises a general water-feeding channel, a first distributing channel, a second distributing channel, a strainer frame and a fixing grid provided with strainers. The micro-contaminated raw water pre-purifying method is as follows: the raw water enters a water distributing zone on the lower part of the filters after distributed and filtered by strainers, and then the water is distributed by filter heads and flows through a pebble bearing layer and a double-layer ceramsite filtering-material of the filters from bottom to top. The same-direction steam and water and the adoption of the double-layer light water-supply ceramsite filtering-material can delay the acceleration lost by the filter heads and provide the essential hydraulic conditions for the high-speed filtering and the collective adoption of a blast aeration system. The invention has high hydraulic load, low manufacturing cost and energy-conserving capability, and can guarantee the efficiency of purifying organisms and ammonia nitrogen. The invention is suitable for the biological pre-purifying to the micro-contaminated water supply.

The invention relates to an improved measuring device for oxygen content in water, which comprises a dissolved oxygen sensor and an ultrasonic transducer for cleaning the dissolved oxygen sensor, wherein the dissolved oxygen sensor and the ultrasonic transducer are arranged in a sealed shell at an interval; and the shell is provided with a water inlet and a water outlet on a peripheral wall of an area between opposite surfaces of the ultrasonic transducer and the dissolved oxygen sensor. The ultrasonic transducer and the dissolved oxygen sensor are arranged in the sealed shell at an interval, so that vibrational energy of ultrasonic waves can be fully utilized when the dissolved oxygen sensor is cleaned, and the cleaning effect is better; the vibrational energy of the ultrasonic waves can be fully utilized, so that only the ultrasonic transducer with lower power is needed, and the aim of energy conservation is achieved; and in addition, the ultrasonic transducer is arranged in the sealed shell, the influence of the ultrasonic waves on aquatic life is greatly reduced.

The invention provides a fish tank bottom filter filtering system. According to the scheme, overflow plates or overflow columns are not arranged, the water level of a fish tank can be freely adjusted, even if the fish tank is not managed by people for a long time, the phenomena that water circulation is suspended due to dropping of the water level of the fish tank, a water pump is burnt out, and water quality is deteriorated to cause dropping of aquatic life energy and death of aquatic lives can be avoided. In addition, according to the scheme, the water level of a bottom filter tank is stable, a protein separator and other cultivation equipment are convenient to manage, and a large number of workloads of feeders are reduced. Through a designed round gasket 19 and a designed annular gasket 20, the problem of the poor closing effect caused by aging and abrasion of gaskets can be well solved, in a power failure state, due to the fact that a water pump 10 can not convey water of the bottom filter tank 16 into a fish tank 1, the problems that the water level of the fish tank can drop and the water level of the bottom filter tank rises and then water overflows due to the poor closing effect are solved. A valve 17 can discharge water from a main water inlet pipe, water in the fish tank can be conveniently and quickly emptied in necessary, in addition, sand, residues, animal skeletons and other solid-state garbage deposited in the main water inlet pipe can be completely cleaned. A tapered piston 6, a perforated plate 7 and a floating ball 9 are combined to control a water switch of a pressure chamber water outlet pipe 26, and compared with a lever type float valve, the fish tank bottom filter filtering system is firmer and more durable. In addition, the perforated plate 7 can be conveniently demounted, then, solid-state matter accumulated inside the fish tank can be conveniently cleaned, and blockage can be avoided.

The invention discloses a device and a method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation, and belongs to the technical field of sewage treatment. The device mainly comprises a membrane bio-film reactor, an inlet water tank, an automatic control system and an outlet water tank, wherein the membrane bio-film reactor is charged with methane and argon gas to keep the reactor in a strict anaerobic state. An independent cultivation method and a co-cultivation method are adopted in sequence for cultivating and taming symbiotic flora of Anammox and N-DAMO (Denitrificationdependent Anaerobic Methane Oxidation) bacteria, so that the synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation process is realized; or the N-DMAO is firstly cultivated independently, and then, the symbiotic flora of Anammox and N-DAMO bacteria are cultured and tamed, so that the synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation process is realized. The device and the method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation disclosed by the invention can be used for realizing sewage biological denitrification by utilizing the synergistic effect of the Anammox and N-DAMO bacteria, and can be used for lowering the mission of greenhouse gases CH4 and N2O in a denitrification process.

The invention relates to a field of environmental biology, and discloses a laccase gene, an engineering bacteria of the laccase gene, and an application thereof in treatment of papermaking waste water by microbial hydrolysis. The laccase gene has a nucleotide sequence as shown in a SEQIDNO:2, and codes a protein having an amino acid sequence as shown in a SEQIDNO:1. According to the invention, the laccase gene optimized according to preferred codons of pichia yeast can be constitutively expressed in high efficiency in yeast, and an expression vitality of the laccase can be improved, thereby being of great significance for promoting the application of the laccase in biological treatment of the papermaking waste water.

The invention discloses a biological environmental-protection detergent, which comprises the following raw materials in weight percentage: 1.5-0 percent of a biological surface active agent, 1.5-50 percent of a non-ionic surface active agent which comes from agricultural and sideline products and can be used as a food emulsifying agent, 10-80 percent of awater-soluble oxygen-contained solvent and the balance of water. All the components interact, thereby, overflowing oil can be rapidly emulsified; the biological degradation rate is high; secondary pollution cannot be caused to water areas; and the phenomenon that the health of other organisms and human is influenced because aquatic organisms are poisoned by the detergent is avoided.

The invention belongs to the technical field of environment-friendly water treatment, and relates to a quick start method of a drinking-water source water biological denitrification system. The quick start method comprises the steps of: selecting a biomembrane reactor, filling sand and the like in the biomembrane reactor, inoculating activated sludge as a denitrifying strain, and then supplementing the source water to be treated; adding glucose and glucose oxidase to the biomembrane reactor, adding glucose and glucose oxidase generating bacteria to the reactor, and adjusting and controlling the operating temperature of the biomembrane reactor to 15-35 DEG C; controlling pH at 7.0-8.5; starting an internal circulation pump to circulate for 3-5 cycles, and carrying out culture and domestication by adopting continuous water inflow; and when the dissolved oxygen in the biomembrane reactor decreases to less than 0.5mg / L, completing the start of the biological denitrification system, connecting to the source water to be treated for normal operation, and supplementing an organic carbon source according to the content of the organic carbon source in the source water. The method has the advantages that the reactor is simple in structure, the principle is reliable, the operating cost is low, the denitrification efficiency is high, the effect is good, environmental friendliness is achieved, resources are saved and the start speed is high.

The invention discloses biological sewage treatment equipment and a process of internal recycle suspension padding, which utilize an aeration generator to enable the suspension padding and the sewage to circularly flow in a reactor, and simultaneously an aerobic reaction area and an anoxia reaction area are formed in the reactor, thereby improving the growth and degradation capability of a biological film on the suspension padding, and having large volume loading and high process efficiency; and by the circularly flow of the sewage and the padding in the aerobic reaction area and the anoxia reaction area, the device and the method degrade or convert the organic matters, nitrogen and the like in the sewage fully, thereby achieving the aim of quickly purifying water quality. The integral structure of the device develops towards space longitudinally, has small occupied area, and simple and convenient mounting, and can be widely applied to the retexture of the sewage.

The invention belongs to a waste water treatment technology field and relates to a method for treating refractory waste water by adopting acoustic and magnetic coupling strengthening microorganism.Due to the auto-adding of magnetic power in a reactor, the adding of ultrasonic generator and the optimization of the condition parameter which controls physical energetic field, microorganism metabolism activity in the treating system is increased, mass transfer efficiency of the system is strengthened, mud is quickly granulated and superior microorganism is effectively withheld. The waste water organism treatment efficiency is improved.

The invention relates to the technical field of sewage treatment agents, and relates to an oil field water biological treatment agent as well as a preparation method and a use method thereof. The oil field water biological treatment agent is obtained according to the preparation method which comprises the following step: sufficiently mixing a required quantity of denitrification and nitrification bacteria solutions, nitrate, nitrite, biquaternary ammonium salt sludge strippers, oil field sewage, potassium permanganate, potassium dichromate and water to obtain the oil field water biological treatment agent. The oil field water biological treatment agent disclosed by the invention can sufficiently exert the richness and effectiveness of indigenous beneficial microorganisms by being prepared by adopting oil field sewage, comprehensively inhibit the activity and growth of sulphate reducing bacteria and control the generation of hydrogen sulfide by enabling the indigenous beneficial microorganisms to compete with the residual sulphate reducing bacteria by virtue of a higher advantage, fundamentally reduce the problem of secondary hydrogen sulfide caused by the sulphate reducing bacteria by inhibiting the growing environment of the sulphate reducing bacteria and changing the generation way of corrosion, prevent the factor of increasing oil field corrosion and inhibit the cost.

The invention belongs to the field of environmental microorganisms and in particular relates to separation and culture of an Acinetobacter johnsonii AJ-3 strain and application thereof in phosphorus removal in sewage and biological phosphorus removal in urban sewage treatment plants. The Acinetobacter johnsonii AJ-3 strain has a collection number of CCTCCM2014023, the collection place is China Center for Type Culture Collection, and the collection date is January, 16th 2014. The strain is an Acinetobacter johnsonii AJ-3 strain, is rapid in growth, high in adaptive capacity to environment and low in dissolved oxygen demands and can rapidly grow in a phosphorus-containing synthetic sewage liquid culture medium, the phosphorus is removed, the phosphorus removal efficiency is high and stable and reaches 55-60.1%, and secondary pollution is avoided. Therefore, the AJ-3 strain can be applied to phosphorus-containing sewage treatment, is an important microbial resource in a water organism phosphorus removal process and has wide application prospect.

The invention provides a plant root layered membrane-forming enhanced water body repairing method for biological denitrification, and relates to the technical field of the biological denitrification of surface water. The invention provides the plant root layered membrane-forming enhanced water body repairing method for the biological denitrification, which comprises the following steps of: based on the conventional ecological floating island and floating bed, adequately using the developed plant root system to be taken as a carrier for growing and breeding denitrified microorganism, respectively carrying out the layered fixation of anaerobic denitrifying bacteria and aerobic denitrifying bacteria, and adequately using the plant root exudates to be taken as a denitrification carbon source, so that the aim of the biological denitrification of the enhanced water body can be achieved. According to the method, after the plant is acclimatized and formed with the membrane in a layered way, the part which is nearer to the root region forms into an anoxic region which is applicable to the growing and the breeding of the facultative or anaerobic microorganism, to promote the anaerobic denitrification of the microorganism; and the part which is further away from the root region forms into an aerobic region which is applicable to the growing and the breeding of the aerobic microorganism, to promote the nitratlon reaction of the microorganism.

The present invention relates to a composition for the treatment of ballast water containing bacteriophage capable of killing specific target bacteria as an active ingredient in order to eliminate or reduce bacteria including pathogenic bacteria present in ballast water, and a biological treatment method of ballast water.

The invention relates to an autotrophic nitrogen removal device adopting a low-carbon-source urban sewage step-feed multi-stage A / O (Anoxic-Oxic) process based on short-cut denitrification and an application method. A device main body consists of an urban raw sewage tank and a step-feed multi-stage A / O device, wherein the step-feed multi-stage A / O device is partitioned into seven areas through perforated partition boards, namely, three segments of anoxic reaction areas, three segments of contact oxidization reaction areas and a precipitation area; sponge fillers with high denitrifying ammonium oxidation activity are inoculated into the three segments of anoxic reaction areas, and undergo a short-cut denitrification reaction and an anaerobic ammonium oxidation reaction to remove nitrogen; polypropylene hollow ring fillers which have high nitrification performance and have mature biofilm formation are inoculated into the three segments of contact oxidization reaction areas, and undergo a nitrification reaction to provide a substrate for short-cut denitrification. The device is suitable for treatment of low-carbon-source urban sewage, has the advantages of high efficiency, energy saving, small floor area and convenience in water plant upgrading and rebuilding, and belongs to the technical field of sewage biological treatment.

The invention provides a reinforced biofilm formation method of a raw water biological pretreatment technique. By inoculating surface water source area or polluted surface water (river water, and lake and reservoir water) sediment, raw water or raw water biological pretreatment technique effluent water is used as an acclimatization matrix, a mechanical aeration or hydraulic disturbance mode is adopted for oxygen supply, and a biofilm is provided to form required proper shearing conditions. The sediment and acclimatization matrix are taken from the oligotrophic environment of target treatment water quality, thereby being beneficial to enrichment culture and colonization of functional microbes. The nutrient orientated reinforcement means is adopted to overcome the defects of insufficient nutrients of the oligotrophic environment and slow microbial growth, and accelerates the enrichment of the functional microbes and the formation of the biofilm. The proper aeration or hydraulic disturbance is utilized for reoxygenation and providing shearing force for biofilm formation, thereby further accelerating the formation of the biofilm, greatly shortening the start time of the raw water biofilm pretreatment technique, and enhancing the operating performance of the technique.

The invention discloses a method for removing phosphorus in concentred and dewatered sludge water by virtue of deeply-dewatered sludge water. The method comprises the following steps of: pre-precipitating the deeply-dewatered sludge water and the concentred and dewatered sludge water respectively, and removing suspended matters in the two types of sludge water; then measuring the pH values of the two types of sludge water and the concentrations of phosphorus respectively; adding the deeply-dewatered sludge water in the concentred and dewatered sludge water in a certain ratio; stirring and standing; then taking the supernatant and measuring the pH value of the effluent and the concentration of phosphorus. According to the method disclosed by the invention, the mutual reactions of sludge water generated in different sludge treatment phases of a sewage treatment plant can be utilized, precipitates are formed by the metal ions of the deeply-dewatered sludge water and the phosphorus of the concentred and dewatered sludge water, solid-liquid separation is performed on the precipitate particulate matters and the supernatant by standing, the effluent is discharged, and the formed phosphorus-containing precipitates are recycled; meanwhile, the pollutant loads of metal ions and phosphorus in the sludge water can be reduced, and the pollutant burden of the backflow of the sludge water to a front-end sewage treatment system or the entrance of the sludge water in a sludge water bio-treatment process is reduced; therefore, the method has the practical significance of treating waste with waste.

The invention discloses an intelligent aquatic life breeding system based on Internet of things. Mainly a controller of a breeding box is connected with a network database through a wireless gateway, so that a user can see monitoring data of the breeding box after logging on the network database, then gives out a command to the controller of the breeding box from the network database, and the breeding box is controlled to change water or the breeding box is cleaned. According to the intelligent aquatic life breeding system disclosed by the invention, the breeding box can be in long-range control and monitoring through the network, as long as the network exists, the user can log on the network database, the interconnection and communication functions between the network user and the controller of the breeding box through the Internet of things and the wireless sensor network can be realized, and the long-range control of the breeding box can be realized at any time and at any place; and in addition, according to requirements, the aquatic lives in the breeding box can be fed, water temperature can be adjusted, water in the breeding box can be changed, and the breeding box can be cleaned.

The invention provides a method for strengthening raw water biological pretreatment biological membrane enrichment and operating performance stability. The method comprises the following steps: by inoculating contaminated raw water, starting a raw water biological pretreatment technology under the conditions of an internal cycle feeding operation mode and an additionally adding appropriate amount of nutrient elements, meanwhile adding diatomite as an auxiliary carrier to form biological diatomite, and retaining functional microbes to endow the biological pretreatment technology with high-efficiency and stable operation performance. The method has the advantages that an internal recycle continuous feeding mode is adopted, a relatively stable biological pretreatment technology starting environment is provided, the mixing of low-concentration nutrition media is quickened, and appropriate waterpower shearing force is provided for the formation and stability of a biological membrane; through additionally added nitrogen and organic matters, the multiplication of the functional microbes and the formation of the biological membrane under an oligotrophic condition are quickened; the diatomite can strengthen the formation of a porous structure inside a polyurethane filler, which is beneficial to further enrichment and structuring retaining of biomass, so that the pollutant removal performance and operational stability of the raw water pretreatment technology are strengthened.

The invention relates to the field of ecological breeding, and provides a bicarbonate saline-alkali soil pond circulation water ecological breeding system. The bicarbonate saline-alkali soil pond circulation water ecological breeding system comprises a breeding pond, an ecological slope protection and an ecological purifying pond, wherein the breeding pond comprises a fish breeding region and a shrimp breeding region; a precipitation canal is arranged on the side edge of the breeding pond; breeding tail water generated in the breeding pond is drained to the precipitation canal for precipitation, then the precipitated breeding tail water overflows in the ecological slope protection; the breeding tail water subjected to filtration and adsorption treatment of the ecological slope protection flows in the ecological purifying pond located on the slope bottom side of the ecological slope protection; and the breeding tail water after treatment by the ecological purifying pond is completed isintroduced into the breeding pond by a reflux pipeline for recycling. Besides, the invention provides the breeding method for performing ecological breeding by the ecological breeding system. The breeding system and the breeding method disclosed by the invention adopt a multi-nutrition level integrated breeding pattern and biologic and ecological purifying measures on saline-alkali soil pond breeding tail water, so that the quality safety of aquatic products can be guaranteed, and the comprehensive economic benefits of breeding can also be increased; and the breeding system and the breeding method have wide popularization prospects.

The invention discloses a device and method for rapid film culturing of wastewater biofilms, and belongs to the technical field of wastewater treatment. For the problems of long film culturing time, weak firmness and easy falling of the wastewater biofilms in the prior art, the invention provides the device and method for the rapid film culturing of the wastewater biofilms. The device for the rapid film culturing of the wastewater biofilms comprises an MBBR, a water inlet tank is connected at the front end of the MBBR through a dosing pump, a sedimentation tank is connected at the rear end of the MBBR, an air pump supplies air for the MBBR through a pipeline, and an aerator is arranged at the bottom of the MBBR. The method for the rapid film culturing of the wastewater biofilms comprises the following steps: (1) preparing a filler with immobilized red sphingomonas; (2) carrying out aeration treatment; (3) adding the filler in the MBBR which is aerated, and adding a certain amount of the filler to an original reactor; (4) maintaining the aeration rate and a corresponding pH value until the required biofilms are obtained. By adopting the device and method for the rapid film culturing of the wastewater biofilms, the effects of the rapid film culturing speed, firm biofilms and low falling possibility can be realized.

The invention discloses a course bamboo fiber sewage treatment filler and a preparation method thereof. The sewage treatment filler uses course bamboo fibers as base materials, and is a biological elastic or combined filler which is prepared by uniformly inserting and fixing the course bamboo fibers used as the base materials on a center rope or embedding the course bamboo fibers in a fixed tray surface, and the course bamboo fibers are vertically and uniformly arranged to form a radial structure. By adopting the sewage treatment filler to treat sewage, the starting time of a bioreactor is shortened by seven days compared with that of the bioreactor using a conventional organic elastic filler; and compared with the conventional organic elastic filler, the chemical oxygen demand and the average ammonia-nitrogen removal effect are obviously improved. Because of the difference of the flexibility of the course bamboo fibers, the course bamboo fibers are uniformly distributed and fully unfolded in the bioreactor after film hanging, agglomeration is avoided, the space is fully used, the probability for microbes to contact with sewage is enhanced, and the mass transfer function is enhanced.

The disclosure relates to a method and system for treating ballast water and ballast water treatment systems in order for treatment effects to be carried out, such as controlling the transportation of undesirable and invasive marine organisms. In particular, the disclosure relates to methods and systems for applying a superimposed time-varying frequency electromagnetic wave comprising both AC and DC components in a pulsating manner to ballast water within a ballast water treatment system.