• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Waste system for complex organic materials comprising an electrochemical reactor (1) configured to perform an electrooxidation and/or electrooxidation-hydrolysis of the complex organic material; an anaerobic digestion reactor (10) configured to perform an anaerobic degradation of the organic material; an exit port (7) configured for the exit of gases and a process that uses said system that can be carried out in two stages or in a single stage, use of said system in processes of co-digestion of waste and treatment process of waste that said system uses. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2577309A1
    申请号:ES201630456
    申请日:2016-04-12
    公开日:2016-07-14
    发明作者:Xiomar Arleth GÓMEZ BARRIOS；Elia Judith MARTÍNEZ TORRES；Camino FERNÁNDEZ RODRÍGUEZ
    申请人:Universidad de Leon；
    IPC主号:
    专利说明:

    image 1 WASTE TREATMENT SYSTEM CONTAINING COMPLEX ORGANIC MATERIALS, USE OF THE SAME AND WASTE TREATMENT PROCESS USED BY THIS SYSTEM
    DESCRIPTION Object and field of the invention The invention relates to a system for the treatment of wastes containing complex organic materials, a use of said system and a treatment process employing said system, in order to accelerate the hydrolysis of matter. organic present, reduce levels of volatile fatty acids and, therefore, reduce processing time, increase the capacity of organic load treatment and produce more biogas.
    The system and process developed here are included in the field of water treatment, treatment of various waste with organic material, for example, sludge from sewage treatment plants.
    Background of the invention Within the treatment of wastewater and the like, anaerobic digestion is a proven and consolidated technology for the recovery of energy from organic waste and complex organic matter. Likewise, the development of the biorefinery concept in recent years has placed anaerobic digestion as a key technology for the treatment of the generated by-products and obtaining electricity and heat for the plant. Some of its most striking advantages are that it allows operating at high organic loads, presenting low nutrient requirements and low investment, control and maintenance costs. Methanogenic archaea are responsible for the final and most critical stage of digestion: methane production. Due to the use of microorganisms in this technology, their sensitivity to environmental factors, such as abrupt changes in pH, organic load, or high concentrations of salts, can lead to process inhibition and the accumulation of volatile fatty acids, which represents one of the main disadvantages of this technology.
    In addition to the instability problems indicated, another of the important limitations of the digestion process is the slow degradation rate of certain substrates, which even if they have a high content of organic matter, are slowly degraded by microorganisms. In fact, one of the most common problems when dealing with complex residues is the limitation associated with the hydrolysis stage and the degree of resistance to degradation of certain complex molecules, which can cause instability in the process or the need to apply times prolonged hydraulic retention (HRT). Electrochemical techniques such as electrocoagulation and
    image2
    5 electrooxidation have demonstrated a high efficiency in the elimination of organic matter soluble in water and in the treatment of industrial effluents with a high content of recalcitrant compounds.
    At present, various systems have been developed that include the stabilization of
    10 sludges through the use of electrochemical techniques. The CN1332898 C (Sludge stabilizing electrochemical treating process) patent describes a process of complete stabilization of primary and secondary sludge by direct electrolysis thereof, considering a treatment between 5 and 50 min, and the use of electrolytes such as sodium chloride or hydrochloric acid to achieve mud stabilization and pathogen elimination.
    15 Similarly, the use of ClO2 gas for the electrochemical oxidation of the mud components has been proposed through the use of a dimensionally stable anode with stainless steel cathode (CN103553286 A, Sludge reduction method by coupling electrochemical / chlorine dioxide catalytic oxidation ). In this case, the sludge stabilization treatment is achieved completely by electrochemical route with low consumption
    20 energy but with a high cost of ClO2 gas. Another way to achieve sludge treatment is that proposed by patent application US20120073985 A1 (Method for treating sludge), in which electrodes are used for the generation of hydroxyl radicals and thus achieve the treatment of biological sludge.
    25 In the case of patent application CN102515399 A (Electrochemical treatment method of sewage) an electrochemical sludge treatment system is proposed, but in this case using iron electrodes for the generation of Fe + 3 and Fe + 2 and thus facilitate the sludge sedimentation process, with the help of an aeration system (15-25 minutes) and the use of a mud recirculation stream.
    30 US8460520 B2 (Electrochemical system and method for the treatment of water and wastewater) describes the elimination of contaminants present in raw water or discharge water from treatment plants, such as domestic and industrial wastewater plants , by applying direct current through a series
    35 separate and alternatively charged electrodes to eliminate or minimize electrode clogging by contaminants. In this case, the system aims to eliminate pollutants exclusively by electrochemical means focusing on a design that allows the total treatment of the effluent and avoids the problems of deposition on the electrodes generating the plugging of the plates on which the water circulates to
    image3
    5 be treated.
    Other proposed systems for the treatment of drinking water, domestic and / or industrial wastewater are described in the following patent documents: EP2834197 A1 (Process and device for electrochemical treatment of industrial wastewater
    10 and drinking toilet), US6916427 B2 (Electrochemical method for treating wastewater) and EP2718235 A1 (Efficient treatment of wastewater using electrochemical cell).
    The combination of electrochemical and biological processes has been proposed for the treatment of waters of the textile industry characterized by the presence of dyes. The
    Patent CN102249486 B (Electrochemical-biological method combination device for treating printing and dyeing wastewater and wastewater treating method) involves the initial electrochemical treatment of textile wastewater followed by an anaerobic biological treatment in which the final elimination of organic compounds is adsorbed by the use of active carbon.
    20 Considering the state of the art, the treatment system proposed here comprises combining, in a single treatment system and process, an electrochemical reactor, aimed at hydrolysis and / or destruction of complex organic matter and / or accelerating the elimination of acid intermediates, and a digester, aimed at the digestion of
    25 organic material. The simplicity of the system allows its rapid application in conventional treatment systems and processes, allowing the reduction of installation costs compared to other processes intended for the same purpose, to improve anaerobic digestion and increase gas production.
    30 The electrochemical treatment would be responsible for reducing the levels of these acids and therefore preventing states of inhibition of the digestion process. Also, it can act as a post-digestion treatment system for the elimination of recalcitrant organic matter characterized by containing aromatic compounds in its structure.
    Description of the invention According to a first aspect, the present invention relates to a waste treatment system containing complex organic materials that allows to increase the yields of biogas production, accelerate the hydrolysis of the organic material, favor the elimination
    image4
    5 of intermediaries and complex organic matter of aromatic structure. To achieve these purposes, the system for the treatment of residues with complex organic materials comprises: an electrochemical reactor configured for electro-oxidation and / or electrolysis of the complex organic material, an anaerobic digestion reactor configured to carry out anaerobic degradation of the organic material, an outlet port for the exit of
    10 gases and a set of pumping and transport elements configured to transport the feed streams and products to and from said reactors, and between them.
    From now on, the anaerobic digestion reactor will be called a digester.
    According to an optional embodiment, the system is configured to place, as the first element acting on the organic material, that is, on the waste feed stream, the electrochemical reactor, in order to subject it to electrochemical treatment and hydrolysis. Then, the current thus treated is transported to the digester through a pumping system.
    20 According to another option, the first element of the system that acts on the feeding current is the digester. Next, the digestion product is transported by a pumping system to the electrochemical reactor, in order to remove the resistant or remaining organic material.
    25 According to an additional embodiment option, both the electrochemical reactor and the digester are placed in the same equipment to treat the feed stream.
    The electrochemical reactor is of flat geometry and consists of at least two electrodes
    30 dimensionally stable as anodes and cathodes, which are parallel flat faces and equidistant from the surface. The electrodes shall be placed on a frame based on a material that does not deteriorate in the operating conditions to provide an anode-cathode separation of at least 4 mm. The electrodes will be submerged in the liquid waste to be treated.
    35 The set of elements for the recirculation of the current to the digester or from it is based on ports for the entry and exit of the liquid stream, ports for the connection to a pumping recirculation system and at least one port for the gas outlet. The residence time inside the electrochemical reactor will depend on the
    image5
    5 characteristics of the supply current, that is, of the waste to be treated.
    The reactor electrodes, anodes and cathodes, consist of materials based on a combination of metal-metal or diamond-metal, arranged in meshes of rectangular shape and of similar dimensions between them. The anode may be coated with metal oxides and
    10 doped with metalloids to improve performance. Oxide coatings can be tin (Sn), plutonium (Pt), rubidium (Ru), titanium (Ti), molybdenum (Mo) or vanadium (V). The metalloids used to improve the process will be mainly antimony (Sb) and boron (B).
    The potential or the current density can be freely varied with the aim of exclusively producing electrooxidation or hydrolysis, as the case may be, of the organic material, or the joint electrooxidation-hydrolysis reaction of the organic materials. The electrical connection with the outside is made by means of conductive wires, using direct current.
    20 According to one option, the system is used in processes of co-digestion of residues that tend to acidification to accelerate the degradation of volatile fatty acids and stabilize the anaerobic digestion process.
    According to another optional embodiment, the system is used in waste treatment processes that contain organic material of complex structure.
    According to a second aspect of the invention, a waste treatment process with complex organic materials is provided that employs a reactor-based system.
    30 electrochemical and a digester, as described above, to treat an aqueous suspension of organic waste, that is, to treat a stream of waste with high organic content. The treatment process comprises an electrochemical treatment, which is performed in the electrochemical reactor, and an anaerobic digestion or digestion process, which is carried out in the digester.
    According to an optional embodiment of the process, the aqueous suspension is first subjected to an electrochemical treatment step and subsequently pumped to the digester for anaerobic degradation. In the electrochemical treatment hydrogen (H2) is produced, whose generation will depend on the current density applied to
    image6
    5 the electrodes, which is evacuated through a gas outlet port and pumped to the digester. The objective of this is that the H2 generated in the reactor can be consumed by the hydrogenotrophic organisms and, thus, achieve the conversion of H2 and CO2 into methane. Therefore, an increase in the richness of the biogas generated in the digester used by the process is achieved.
    10 According to this option, in which the first stage is electrochemical treatment, the aqueous suspension of the waste to be treated must have a total solids content between 2 and 6%. In this case, the aqueous suspension must be transported in ascending order to avoid the deposition of solids in the anode. Using a recirculation pump
    15 transports the aqueous suspension to the point of entry of the anode to adjust the residence time thereof within the electrochemical reactor, according to the characteristics of the aqueous suspension to be treated.
    The H2 produced in the electrochemical treatment of the aqueous suspension is transported
    20 towards the anaerobic digestion stage, which is carried out under mesophilic or thermophilic conditions.
    In anaerobic digestion strict and / or optional anaerobic microorganisms are used. Strict anaerobes possess enzymatic systems that only work in
    Absence of oxygen (O2), and facultative anaerobes can develop both respiratory metabolism, using oxygen; as fermentative, in the absence of it. The microorganisms used in the process can be obtained from mesophilic digestion systems.
    "Mesophilic conditions" means in the present invention those temperature conditions between 15 and 45 ° C. Preferably, the process temperature is between 30 and 40 ° C. By "thermophilic conditions" is understood in the present invention those temperature conditions between 45 and 65 ° C. Preferably, the process temperature is between 50 and 55 ° C.
    35 During anaerobic digestion there is, on the one hand, a gas stream that essentially contains methane and carbon dioxide, and, on the other, a liquid product or effluent that contains anaerobically degraded water and organic matter.
    image7
    5 According to another optional embodiment, under the same two-stage configuration, the process operates so that the first stage is anaerobic digestion or degradation in order to remove the biodegradable organic material. In this option, the aqueous suspension to be anaerobically degraded may contain between 2 and 25% of total solids content. In this first stage of biological degradation a liquor is produced and then transferred
    10 to a suspended solids separation unit. After the digestion stage, the supernatant liquid is transported to the electrochemical reactor to carry out the electrochemical treatment, in order to remove the recalcitrant or remaining organic matter. To do this, the supernatant liquid is introduced into the anode of the electrochemical reactor and is maintained inside it by continuous recirculation of the fluid, until reaching the
    15 required residence time, depending on the desired removal rate for the recalcitrant compound.
    According to an additional option, the process is carried out through a single stage. In this case, the process is carried out in a system comprising an electrochemical reactor and a digester that are coupled and comprised within the same equipment. Here, the objective of the electrochemical reactor, which is coupled to the digester, is the elimination of acid intermediates. Thus, first the biological degradation of the feed stream is carried out, that is, the hydrolysis and acidification of the organic material contained in the aqueous suspension of the residue to be treated, which is highly biodegradable. For this
    Optionally, the aqueous suspension may have a total solid content of up to 25%. As a result of biological hydrolysis, volatile organic acids will be generated.
    The acids that accumulate in the liquor are degraded by the characteristic biological activity of the digester and the electrochemical reactor, which relieves or reduces inhibition
    30 exerted by this type of acids, so that the methanogenesis phase of digestion can be carried out. The power supply to the reactor will be provided exclusively when the reactor is acidified.
    In this single stage option, the current density applied to the electrodes 35 can also be variable, in order to generate hydroxyl radicals responsible for oxidizing
    image8
    electrochemically the acid intermediates of the digestion process. The current density can be increased to generate the release of H2 inside the reactor and favor the enrichment of biogas in methane, or to generate the release of oxygen and, thus, apply a micro-aeration process in the reactor , in order to accelerate biological degradation and increase the stability of anaerobic digested by aerobic degradation of organic complex compounds. The micro-aeration also pursues the dual objective of reducing hydrogen sulfide levels in biogas, thus achieving a biogas with low levels of hydrogen sulphide, and greater conversion of organic matter, thanks to the realization of a mixed process
    10 anaerobic-aerobic.
    Because the biological hydrolysis is carried out at a faster rate than methanogenesis, as a consequence of the high biodegradability of the raw material, an accumulation of organic acids occurs inside the system or equipment. The conversion of
    15 complex organic compounds with acids of even number of carbons (C2, C4 and C6) and odd number of carbons (C3 and C5) will cause in the process a reduction in the relationship between volatile fatty acids and total alkalinity. When this ratio reaches a value of less than 0.4-0.3, the electrodes will be activated to initiate oxidation by hydroxyl radicals of the acid intermediates.
    20 The electrodes will be responsible for reducing the levels of organic acids in the reactor. They also have the ability to generate H2, which can be used by hydrogenotrophic microorganisms or can generate oxygen to provide a microair to the system and thus accelerate the consumption of acid intermediates by the
    25 facultative and / or aerobic microorganisms present with the native microflora of the sludge. The elevation of the current applied to the electrodes favors the stabilization of the sludge and the reduction of the levels of H2S (hydrogen sulfide) in the generated biogas.
    Brief description of the drawings
    Next, drawings that help to better understand the invention and that expressly relate to optional embodiments, which are presented as non-limiting examples of the invention, are described very briefly.
    Figure 1: Represents a process configuration operating in two stages that employs a system consisting of an electrochemical reactor and a digester.
    image9
    Figure 2: Represents a process configuration, which uses the system of the invention, operating as a single stage.
    For clarity, the following list of references used in the drawings is presented
    5 1. Electrochemical reactor
    2. Electrode
    3. Anode
    Four. Cathode
    5. input port
    10 6. Port for effluent
    7. Gas exhauster
    8. Electric connections
    9. Gas inlet
    10. Anaerobic digester or reactor
    DETAILED DESCRIPTION OF THE INVENTION The system comprises, on the one hand, an electrochemical reactor (1) configured to effect the electro-oxidation or electrolysis of an aqueous suspension of residues with a high content of organic material and, on the other, a digester (10 ) for anaerobic digestion or degradation
    20 of the aqueous suspension.
    In this case, the system is configured so that the electrochemical reactor (1), which receives the aqueous suspension and treats it, acts first, and so that, after this, the digester (10) acts. See Figure 1.
    The electrochemical reactor (1) is of flat geometry and consists of at least one pair of electrodes (2) composed of anode (3) and cathode (4), with parallel flat faces and equidistant from the surface. The electrodes are placed on a frame based on a material that does not deteriorate in the operating conditions and maintaining a
    30 anode-cathode spacing of at least 4 mm. The electrodes will be submerged in the liquid waste to be treated. The electrodes of the reactor, anode (3) and cathode (4), consist of materials based on a combination of metal-metal or diamond-metal. The anode in the electrodes may be coated with metal oxides and doped with metalloids to improve performance. For example, coatings of tin oxides (Sn), plutonium (Pt),
    35 rubidium (Ru), titanium (Ti), molybdenum (Mo) or vanadium (V), and antimony (Sb) and boron (B).
    image10
    The system of the invention also comprises a set of fluid pumping and transport elements based on inlet (5) and outlet (6) ports, located respectively in the lower and upper base of the digester (10), for the recirculation of the
    5 aqueous suspension to be treated in the digester, and at least one port (7) for the exit of gases, for example hydrogen (H2).
    The reactor (1) has an electrical connection with the outside (8), by means of conductive wires, to use direct current. This allows the potential or density of
    The current can be freely varied in order to exclusively produce electrooxidation or hydrolysis, as the case may be, of the organic material, or the joint electro-oxidation-hydrolysis reaction of the organic compounds.
    The system, according to another option (Figure 2), can first arrange the digester to receive the aqueous suspension and then the electrochemical reactor acts.
    The treatment process that uses the system detailed above can be done in two stages: first, the electrochemical treatment and then the anaerobic digestion stage (Figure 1). The effluent or liquid product that comes from the first stage 20 carried out in the electrochemical reactor is pumped to the digester (10) and introduced into it through an inlet port (5) to continue anaerobic degradation. By means of an outlet port (7) at the top of the reactor (1), a stream containing hydrogen (H2) is introduced in the second stage through the inlet port (9) in the digester (10), for its degradation. H2 is consumed by hydrogenotrophic organisms
    25 and, in this way, the conversion of H2 and CO2 into methane is achieved and an increase in the richness of the biogas generated in the digester is achieved.
    The raw material, that is, the aqueous suspension of the waste to be treated must have a total solids content between 2 and 6%. Through the pumping and transport elements of
    30 fluids, the suspension is transported in ascending order to avoid the deposition of solids on the anode (3). The recirculation pump pumps the fluid back to the point of entry of the anode (3) to adjust the residence time of the fluid inside the electrochemical reactor (1) according to the characteristics of the aqueous suspension to be treated.
    The invention will now be illustrated by two tests that show the effectiveness of the system and method of the invention for the hydrolysis of the sewage plant sludge and its effectiveness in the use of the electrodes under the configuration of a single stage as a system. of relief of inhibitions by organic overload.
    image11
    5 Test 1 The hydrolysis of the secondary sludge obtained from a wastewater treatment plant has been evaluated. Different types of dimensionally stable electrodes with an area of 50 mm2 have been used for the electrochemical hydrolysis process. The hydrolysis of the sludge was evaluated for a time of 1 h. An evolution of hydrogen (H2) of 160 ml was obtained
    10 during the waste treatment period. Subsequently, the hydrolyzed residue was subjected to anaerobic digestion, obtaining an increase in the production of sludge gas of 35% under mesophilic conditions using discontinuous systems as a comparison.
    15 Test 2 The joint process of anaerobic digestion and electrochemical oxidation of acid intermediates has been evaluated using glucose as a substrate in the co-digestion process in order to accelerate the generation of acid intermediates. The sludge co-digestion process of wastewater treatment plants was carried out in batch. The addition of glucose to the process
    20 mimics the addition of a highly biodegradable co-substrate to a conventional co-digestion system. A punctual overload was applied to the digestion process of 15 g / l of glucose, which resulted in the accelerated production of organic fatty acids C2-C6 with even and odd numbers of carbons. The total fatty acid content rose to 9 g / l, with acetic and butyric being the main acids. The operation of the electrodes
    25 dimensionally stable allowed to maintain levels of organic acids below 4.0 g / l avoiding the absolute inhibition of the digestion process.
    30
    权利要求:
    Claims (10)
    [1]
    image 1
    1. Waste treatment system containing complex organic materials, characterized in that it comprises: an electrochemical reactor (1) configured to perform electrooxidation and / or electrooxidation-hydrolysis of the complex organic material; a
    5 anaerobic digestion reactor (10) configured to perform anaerobic degradation of the organic material; an outlet port (7) configured for the output of gases and a set of elements (5, 6) configured for the transport and pumping of currents to and from said reactors, and between them.
    System according to claim 1, characterized in that it places, as the first element acting on the organic material, the electrochemical reactor (1).
    [3]
    3. System according to claim 1, characterized in that it is positioned as the first element
    which acts on the organic material, the anaerobic digestion reactor (10). fifteen
    [4]
    Four. System according to claim 1, characterized in that the electrochemical reactor (1) and the anaerobic digestion reactor (10) are located in the same equipment.
    [5]
    5. System according to claims 1 to 4, characterized in that the electrochemical reactor
    20 is formed by at least two dimensionally stable electrodes, one as an anode (3) and the other as a cathode (4), with parallel and equidistant flat faces, which are constituted by materials based on metal-metal combinations and diamond-metal.
    System according to claim 5, characterized in that the electrodes as anodes
    (3) They are coated with metal oxides selected from the following: SnO2, PtO2, Ru2O, TiO2, MoO3, V2O5, Sb2O3 and B2O3.
    [7]
    7. Use of the system as defined in claim 1 in co-digestion processes of
    30 residues that tend to acidification to accelerate the degradation of volatile fatty acids and stabilize digestion.
    [8]
    8. Use of the system as defined in claim 1 in treatment processes of
    waste containing organic material of complex structure. 35
    13
    image2
    [9]
    9. Waste treatment process with complex organic material, by means of a system comprising an electrochemical reactor (1), an anaerobic digestion reactor (10), an outlet port (7) for the exit of gases, characterized in that, from the introduction of the residue, it comprises performing an electrochemical treatment of the material
    5 in the electrochemical reactor (1) and anaerobic digestion in the anaerobic digestion reactor (10).
    [10]
    10. Process according to claim 9, characterized in that the first
    electrochemical treatment of organic material. 10
    [11]
    11. Process according to claim 9, characterized in that anaerobic digestion is performed first.
    [12]
    12. Process according to claim 9, characterized in that the electrochemical treatment and anaerobic digestion are carried out in a single stage.
    14
    类似技术:
    公开号 | 公开日 | 专利标题
    Cui et al.2014|Enhanced decolorization of azo dye in a small pilot-scale anaerobic baffled reactor coupled with biocatalyzed electrolysis system |: A design suitable for scaling-up
    Jadhav et al.2019|Suppressing methanogens and enriching electrogens in bioelectrochemical systems
    Zhang et al.2014|Microbial electrolysis cells turning to be versatile technology: recent advances and future challenges
    Wagner et al.2009|Hydrogen and methane production from swine wastewater using microbial electrolysis cells
    Xu et al.2014|Evaluation of thermal, thermal-alkaline, alkaline and electrochemical pretreatments on sludge to enhance anaerobic biogas production
    Kaewkannetra et al.2011|Treatment of cassava mill wastewater and production of electricity through microbial fuel cell technology
    Hua et al.2019|Microbial electrolysis cell as an emerging versatile technology: a review on its potential application, advance and challenge
    Tejedor-Sanz et al.2017|Merging microbial electrochemical systems with electrocoagulation pretreatment for achieving a complete treatment of brewery wastewater
    US20120100590A1|2012-04-26|Microbially-assisted water electrolysis for improving biomethane production
    Feng et al.2017|Bioelectrochemical enhancement of direct interspecies electron transfer in upflow anaerobic reactor with effluent recirculation for acidic distillery wastewater
    Zhou et al.2018|Microbial electrolytic disinfection process for highly efficient Escherichia coli inactivation
    CN101607776B|2012-05-09|Brewery wastewater treatment device and treatment method
    Xu et al.2019|Impact of zero valent iron on blackwater anaerobic digestion
    CN103359876A|2013-10-23|Harmless dimethylacetamide wastewater treatment method
    Khan et al.2015|Studies on the biodegradation of two different azo dyes in bioelectrochemical systems
    Long et al.2019|Characterization of electricity generation and microbial community structure over long-term operation of a microbial fuel cell
    Feng et al.2017|Influence of neutralization in acidic distillery wastewater on direct interspecies electron transfer for methane production in an upflow anaerobic bioelectrochemical reactor
    Zou et al.2020|Degradation of pharmaceuticals from wastewater in a 20-L continuous flow bio-electro-Fenton | system
    Jadhav et al.2021|Recent advancement in scaling-up applications of microbial fuel cells: from reality to practicability
    Arvin et al.2019|A comparative study of the anaerobic baffled reactor and an integrated anaerobic baffled reactor and microbial electrolysis cell for treatment of petrochemical wastewater
    Zhao et al.2021|In-situ hydrogen peroxide synthesis with environmental applications in bioelectrochemical systems: a state-of-the-art review
    CN104496008B|2016-03-16|The Apparatus and method for of a kind of electrochemistry-biological coupling process organic waste water
    Niu et al.2020|Does the combined free nitrous acid and electrochemical pretreatment increase methane productivity by provoking sludge solubilization and hydrolysis?
    Wang et al.2017|A novel microbial electrolysis cell | reactor for biological sulfate-rich wastewater treatment using intermittent supply of electric field
    Ki et al.2019|High-rate stabilization of primary sludge in a single-chamber microbial hydrogen peroxide producing cell
    同族专利:
    公开号 | 公开日
    ES2577309B1|2017-04-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3764500A|1970-10-28|1973-10-09|Pacific Eng & Prod Co Of Nevad|Method and apparatus for electrolytic treatment of sewage|
    JPS4882658A|1972-01-20|1973-11-05|
    US20120132521A1|2009-06-16|2012-05-31|Matthew Silver|Systems and devices for treating water, wastewater and other biodegradable matter|
    CN104261644B|2014-10-27|2016-03-30|天津乾闰环境工程咨询有限公司|A kind of method improving wastewater sludge anaerobic digestion efficiency|
    CN104762330A|2015-04-16|2015-07-08|浙江工商大学|Device and method for increasing electrochemical hydrogen production efficiency of surplus sludge|
    法律状态:
    2017-04-25| FG2A| Definitive protection|Ref document number: 2577309 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170425 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630456A|ES2577309B1|2016-04-12|2016-04-12|WASTE TREATMENT SYSTEM CONTAINING COMPLEX ORGANIC MATERIALS, USE OF THE SAME AND WASTE TREATMENT PROCESS USED BY THIS SYSTEM|ES201630456A| ES2577309B1|2016-04-12|2016-04-12|WASTE TREATMENT SYSTEM CONTAINING COMPLEX ORGANIC MATERIALS, USE OF THE SAME AND WASTE TREATMENT PROCESS USED BY THIS SYSTEM|
    [返回顶部]