CN111646608A - Skid-mounted system for electrochemically treating various kinds of sewage - Google Patents
Skid-mounted system for electrochemically treating various kinds of sewage Download PDFInfo
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- CN111646608A CN111646608A CN202010654966.2A CN202010654966A CN111646608A CN 111646608 A CN111646608 A CN 111646608A CN 202010654966 A CN202010654966 A CN 202010654966A CN 111646608 A CN111646608 A CN 111646608A
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- sedimentation tank
- sewage
- fenton
- tank
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
Abstract
The skid-mounted system is provided with an electric flocculation unit, an electric Fenton unit, an electrocatalytic oxidation unit, a multiphase catalytic oxidation unit, a sedimentation tank and a dosing system between a sewage inlet pipeline and a clear water outlet pipeline, and a PLC control system controls valves of all the pipelines to realize combination of different processes, performs small-scale test and middle-scale test amplification research on sewage with different water quality conditions, provides a design basis for ensuring continuous stability of subsequent sewage treatment amplification operation, is suitable for occasions such as experimental research, teaching practice, field middle-scale test, process optimization and the like, and provides a basis for engineering design.
Description
Technical Field
The invention belongs to the technical field of electrochemical sewage treatment, and particularly relates to a skid-mounted system for electrochemically treating various kinds of sewage.
Technical Field
The sewage has the characteristics of complex components, various pollutant types, high content, high emulsification degree, high salinity and the like, and the defects of low automation degree, few types of treatable sewage, large volume of equipment, difficult transportation, low integration degree, inconvenience in movement and the like exist in the occasions of experimental research, teaching practice, field pilot test, process optimization and the like at present. Moreover, the current sewage treatment experiments of colleges and universities are focused on monitoring and analysis, and the pilot test equipment of a sewage treatment plant is single, occupies a large area, and cannot well meet the pilot test amplification research of sewage treatment of different water qualities. Therefore, a system capable of carrying out small-scale test and pilot scale research on sewage with different water quality conditions is urgently needed, and a design basis is provided for ensuring the continuous stability of the subsequent sewage treatment scale-up operation.
CN105776442A discloses an electrochemical sewage treatment unit, which is formed by connecting several identical electrochemical treatment units in series, and selecting and using the number of electrochemical treatment units according to the amount of sewage to be treated, and when sewage is treated, the electrochemical treatment unit can be flexibly set according to the amount of sewage generated, so as to effectively cope with the fluctuation of sewage amount, and realize reasonable use of resources, but the type of sewage to be treated is limited.
CN103351074A discloses an electrochemical sewage treatment method, which is characterized in that electrochemical treatment is taken as a core, a physicochemical treatment mode is taken as an auxiliary, the whole electrochemical and physicochemical treatment processes are controlled by a control system, and a PLC (programmable logic controller) is adopted in the control system for multi-node control. According to the method, according to the fact that the sizes of pollutants and flocculates in the sewage before and after electrochemical treatment are large, PLC is used for multi-node control, whether physicochemical or physical treatment methods are suitable before and after the electrochemical treatment is selected, different forms of combined treatment methods are adopted, the treatment effect can be effectively improved, the water quality standard of effluent is improved, but the electrochemical treatment methods cannot be reasonably selected according to the types of the pollutants in the sewage, and the types of sewage treatment are limited.
The utility model patent CN208136007U discloses an experiment teaching device of multiple sewage of electrochemical treatment is a water treatment system simulation experiment teaching device that can dismantle, can independent assortment, adopts a plurality of experiments sharing part experiment sub-device, has practiced thrift occupation space and processing cost, is applicable to colleges and universities environmental engineering this branch of academic or vocational study raw water treatment experiment platform, takes up an area of for a short time, and compact structure is fit for many sets of arrangements of this branch of academic or vocational study teaching laboratory, and the operation management is convenient. But the whole system can not be automatically controlled by a PLC system, but a proper process is selected according to the test requirement, and then the equipment required in the process is sequentially connected by using hoses, so that the automation degree is low, the operation is complex, and the efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problems of low automation degree, few types of treatable sewage, large volume of equipment, difficult transportation, low integration degree and inconvenient movement in the occasions of experimental research, teaching practice, on-site pilot test, process optimization and the like. The skid-mounted system can adopt a PLC control system to perform multi-point control and select reasonable process combination aiming at sewage with different water quality conditions in the process of small-scale and pilot-scale research, takes electrochemical sewage treatment as a core, takes sewage treatment in a physicochemical mode as assistance, and provides a design basis for ensuring the continuous stability of subsequent sewage treatment and amplification operation.
The invention provides a skid-mounted system for electrochemically treating various kinds of sewage, which comprises a sewage inlet pipeline and a clear water outlet pipeline, wherein an electric flocculation unit, an electric Fenton unit, an electrocatalytic oxidation unit, a multiphase catalytic oxidation unit, a sedimentation tank and a dosing system are arranged between the sewage inlet pipeline and the clear water outlet pipeline; the electric flocculation unit, the electric Fenton unit, the electric catalytic oxidation unit and the multiphase catalytic oxidation unit are connected in parallel through pipelines, the electric flocculation unit and/or the electric Fenton unit are/is connected with the second sedimentation tank in series through pipelines, the electric catalytic oxidation unit is connected with the sedimentation tank in series through pipelines, and the multiphase catalytic oxidation unit is connected with the third sedimentation tank in series through pipelines; the electric flocculation unit comprises a blow-off tank and an electric flocculation device; the electro-Fenton unit comprises an air stripping tank and an electro-Fenton device; the electrocatalytic oxidation unit comprises a stripping tank and one or more electrocatalytic oxidation devices, and each electrocatalytic oxidation device is provided with one stripping tank; the heterogeneous catalytic oxidation unit is formed by sequentially connecting an acid regulating device, an iron-carbon tower and a Fenton tower in series through pipelines; the water outlet end of the sedimentation tank II is a three-way pipe, wherein one end of the three-way pipe is connected with the clean water outlet pipeline I, and the other end of the three-way pipe is connected with the acid regulating device; the water outlet end of the first sedimentation tank is a three-way pipe, one end of the three-way pipe is connected with a clean water outlet pipe II, and the other end of the three-way pipe is connected with a water inlet pipe of the electro-Fenton unit; the dosing system consists of one or more dosing devices, and a dosing metering pump is arranged on a water outlet pipeline of each dosing device; the electro-Fenton device and/or the electro-flocculation device, the acid regulating device, the first sedimentation tank, the second sedimentation tank and the third sedimentation tank are/is provided with a chemical adding device; the skid-mounted system realizes the combination of different processes by controlling the valve switch of each pipeline through a PLC control system.
As a preferable technical measure, the front end of the water inlet pipeline is connected with a raw water pool, and the lower part of the inner side of the raw water pool is provided with a liquid level controller.
As a preferable technical measure, the electric flocculation unit and the electric Fenton unit share one set of device.
As a preferable technical measure, the electrocatalytic oxidation device is selected from one or more of antimony electrocatalytic oxidation device, iridium electrocatalytic oxidation device, tantalum electrocatalytic oxidation device, selenium dioxide electrocatalytic oxidation device, ruthenium iridium electrocatalytic oxidation device and lead dioxide electrocatalytic oxidation device.
As a preferable technical measure, the electrocatalytic oxidation unit comprises a plurality of electrocatalytic oxidation devices which are connected in parallel through pipelines.
As a preferable technical measure, the electro-Fenton unit and/or the electro-flocculation unit and the acid regulating device are provided with an acid liquid adding device and an oxidant adding device, and the acid liquid is selected from one of sulfuric acid, hydrochloric acid, ferric sulfate, nitric acid and phosphoric acid; the oxidant is selected from one of hydrogen peroxide and sodium hypochlorite; the first sedimentation tank and the third sedimentation tank are provided with a coagulant dosing device, a coagulant aid dosing device and an alkali liquor dosing device; the second sedimentation tank is provided with a coagulant dosing device, a coagulant aid dosing device, an alkali liquor dosing device and a salt dosing device; the coagulant is selected from one of polyaluminium chloride (PAC), aluminum sulfate, ferrous sulfate heptahydrate, ferric chloride, ferrous sulfate and alum; the coagulant aid is selected from one of polyacrylamide, Polyacrylamide (PAM) and polypropylene; the salt is selected from one of calcium chloride and calcium carbonate; the alkali liquor is selected from one of sodium hydroxide and calcium hydroxide.
As a preferred technical measure, the acid is selected from sulfuric acid, the oxidant is selected from hydrogen peroxide, the coagulant is selected from polyaluminium chloride (PAC), the coagulant aid is selected from Polyacrylamide (PAM), the salt is selected from calcium chloride, and the alkali is selected from sodium hydroxide.
As a preferred technical measure, the sedimentation tank comprises a coagulation area and a reaction area.
As a preferable technical measure, the raw water tank, the acid regulating device, the electric flocculation device, the electric Fenton device, the sedimentation tank, the electric catalytic oxidation device, the iron-carbon tower, the Fenton tower, the dosing device and the blow-off tank are all made of transparent materials, and the materials can be selected from organic glass (PMMA), polyvinyl chloride (PVC), Polycarbonate (PC) and polypropylene (PP).
As a preferable technical measure, the skid-mounted system is also provided with an automatic safety monitoring alarm system for monitoring and alarming liquid leakage, tank overflow, low liquid level and overflow.
As a preferred technical measure, each electrocatalytic oxidation device and the air stripping tank equipped with the electrocatalytic oxidation device are combined into one device.
As a preferable technical measure, the electric flocculation device and the air-blowing and dewatering tank which is provided with the electric flocculation device are combined into one device.
Preferably, the electro-Fenton device and the air stripping tank equipped with the electro-Fenton device are combined into one device.
As a preferable technical measure, the coagulation areas of the first sedimentation tank, the second sedimentation tank and the third sedimentation tank respectively comprise a first coagulation tank, a second coagulation tank and a third coagulation tank.
Compared with the prior art, the invention has the following advantages: 1. the system integrates the advanced oxidation technologies of electric flocculation, electro-Fenton, electro-catalytic oxidation, heterogeneous catalytic oxidation and the like at the forefront, and has high sewage treatment efficiency and high pollutant removal rate in sewage.
2. The equipment adopts the modularized integrated skid-mounted structural design, the integrity of the equipment is strong, and the equipment is convenient to carry.
3. All the cell bodies and the cell bodies of all the units of the system are made of transparent materials, and the numerical control engraving machine is formed by blanking, so that the whole system is attractive, transparent and convenient to observe.
4. The device is composed of a plurality of units, each unit can be independently operated, and can also be randomly combined to operate according to the requirement: the system adopts a 'PLC + touch screen' control mode, can conveniently realize the mutual combination of single or multiple independent functions by directly clicking on the touch screen, thereby finishing the pretreatment of organic sewage under different water quality conditions, realizing the aims of removing organic phosphorus, heavy metal, decoloring, degrading organic matters, removing ammonia nitrogen total nitrogen, degrading biotoxicity, improving biodegradability and the like, reaching the discharge standard specified by national standards, providing a design basis for the continuous and stable operation of a subsequent biochemical system, and being suitable for occasions such as experimental research, teaching practice, on-site pilot test, process optimization and the like.
5. The system operation adopts PLC automatic control, key parts or parameter layout sensors carry out intelligent control, a device for continuously detecting process parameters such as water inlet flow, dosing flow, PH value and the like is arranged, sound and light linkage is adopted for warning or alarming, the start and stop of a water pump are controlled through a liquid level meter, fault types and disposal methods are prompted through a screen, automatic control and manual control of a valve installed on a pipeline can be freely switched through a PLC control system, and the system is advanced in technology, simple to operate, convenient to manage, safe, reliable, economical and reasonable.
Drawings
FIG. 1 is a schematic process flow diagram of an embodiment of the present invention.
FIG. 2 is a perspective view of the settling tank of the present invention.
Fig. 3 is a perspective view of an electro-fenton apparatus or an electro-flocculation apparatus according to the present invention.
Fig. 4 is a front view of an electro-fenton apparatus or an electro-flocculation apparatus according to the invention.
Fig. 5 is a top view of the electro-fenton apparatus or electro-flocculation apparatus shown in fig. 4.
Fig. 6 is a sectional view taken along line B-B in fig. 5.
Fig. 7 is a sectional view taken along line C-C in fig. 5.
Fig. 8 is a left side view of the electro-fenton device or electro-flocculation device shown in fig. 4.
Fig. 9 is a right side view of the electro-fenton device or electro-flocculation device shown in fig. 4.
Description of reference numerals: 1-a raw water tank, 2-a clear water outlet pipeline I, 3-a clear water outlet pipeline II, 4-a clear water outlet pipeline III, 5-an acid liquid dosing device, 6-an oxidant dosing device, 7-a coagulant dosing device, 8-a coagulant dosing device, 9-an alkali liquid dosing device, 10-a salt dosing device, 11-a sedimentation tank II, 12-a sedimentation tank I, 13-a sedimentation tank III, 14-a blow-off tank I, 15-a blow-off tank II, 16-a blow-off tank III, 17-an electro-fenton device/an electro-flocculation device, 18-a lead dioxide electro-catalytic oxidation device, 19-a ruthenium iridium electro-catalytic oxidation device, 20-a fenton tower, 21-an iron carbon tower, 22-an acid regulating device, 23-a dosing pump, 241-a lift pump I, 242-a lift pump II, 243-lift pump III, 244-lift pump IV, 251-flow switch I, 252-flow switch II, 253-flow switch III, 254-flow switch IV, 26-pH meter, 27-stirrer I, 28-dosing pump, 29-pipeline valve switch, 30-coagulation tank I, 31-coagulation tank II, 32-coagulation tank III, 32-reaction zone, 33-stirrer II, A1-stirring motor, A2-binding post, A4-water outlet, A5-mud discharge pipe, A7-communicating pipe, A8-emptying pipe II, A9-water inlet, A10-electrode plate II, A11-electrode plate I, A13-overflow weir, A14-overflow groove, A15-electrolysis zone, A16-water distribution zone, A17-water distribution pipe, A18-aeration pipe, a19-baffle plate, A20-first-stage coagulation reaction tank, A21-second-stage coagulation reaction tank, A22-stirring paddle, A23-first aeration opening, A24-sum and A25-first emptying pipe.
Detailed Description
The following examples are intended to further illustrate the present invention, but they are not intended to limit or restrict the scope of the invention.
The sewage treatment principle of the main functional units of the embodiment of the invention is summarized as follows:
1. an electric flocculation unit: basic electrochemical processes based on the sacrificial anode method. The process is suitable for efficiently removing high-turbidity industrial sewage, electroplating sewage, phosphating sewage, fluorine-containing sewage and other industrial sewage. Compared with the traditional chemical method, the process has the advantages of high removal rate, small mud amount, simple and convenient operation and convenient realization of automatic control.
2. electro-Fenton unit: the electrochemical Fenton treatment process based on the sacrificial anode method is provided because compared with the common chemical Fenton, the electrochemical Fenton treatment process has the characteristics of high treatment efficiency, high automation degree and short reaction time under the condition of the same hydrogen peroxide addition amount, and particularly has incomparable technical advantages in the field of pretreatment of high-concentration organic sewage.
3. A sedimentation tank: as the pool body of the high test bed is made of transparent materials, the coagulation process and the sedimentation process are clear at a glance, and the high test bed is the most intuitive practice place and practical training equipment for teaching practice.
4. Electrocatalytic oxidation of ruthenium and iridium: the electro-catalytic oxidation process of the noble metal catalytic coating based on the titanium-based insoluble anode is suitable for sewage treatment occasions such as electro-catalytic decolorization, electro-catalytic oxidation, electro-catalytic complex breaking and the like.
5. Electrocatalytic oxidation of lead dioxide: the electrode has extremely high anode-separating potential due to the adoption of a lead dioxide or tin dioxide composite coating, and under the action of an electric field, the electrode generates a large amount of hydroxyl free radicals in an anode region and acts on a system, so that organic matters in sewage are efficiently degraded and mineralized, and then the organic matters are removed, and the method is an effective means for pretreatment of high-concentration organic sewage.
6. Iron-carbon microelectrolysis-Fenton technology: the process is generally accepted in engineering practice, but the selection and optimization of process parameters are difficult to obtain a data-oriented evidence all the time, and the skid-mounted system integrates the process and aims to obtain an optimized process parameter combination through experimental research so as to provide a basis for engineering design.
The above is the independent functional module of the skid-mounted system of the present invention. This sled dress formula system adopts "PLC + touch-sensitive screen" control mode, through the mode of direct click on the touch-sensitive screen, the intercombination of 2 or a plurality of independent functions more than can be convenient realization to accomplish the preliminary treatment to the high concentration organic sewage under the different quality of water conditions, realize the decoloration, degrade the organic matter, get rid of ammonia nitrogen total nitrogen, degradation biotoxicity, improve target such as biodegradability, provide the design basis for the continuous steady operation of follow-up biochemical system.
The electrocatalytic oxidation apparatus used in the electrocatalytic oxidation unit of the present invention is manufactured by referring to an internal circulation type electrolytic cell disclosed in patent CN 108502990A.
The first embodiment is as follows: the electro-fenton apparatus or the electro-flocculation apparatus shown in fig. 3 to 9, wherein the electro-fenton apparatus and the electro-flocculation apparatus share one set of apparatus, which includes a water inlet a9 and a water outlet a4, and a reaction zone and an electrolysis zone are sequentially arranged between the water inlet a9 and the water outlet a 4; the reaction zone comprises a primary coagulation reaction tank A20, a secondary coagulation reaction tank A21 and a baffle plate A19, the primary coagulation reaction tank A20 and the secondary coagulation reaction tank A21 are separated by the baffle plate A19, the upper edge of the baffle plate A19 is lower than the upper edge of the tank body of the reaction zone, and sewage flows into the secondary coagulation reaction tank A21 from the primary coagulation reaction tank A20 through the baffle plate A19.
The lower part of the side wall of the primary coagulation reaction tank A20 is provided with a water inlet A9 and an aeration port II A24, and the aeration port II A24 is vertically below the water inlet A9, so that the equipment floor area is saved by adopting an aeration mixing mode, and the water quality is ensured to be uniform when sewage flows into the secondary coagulation reaction tank A21 from the baffle plate A19. And a first emptying pipe A25 is arranged at the bottom of the first-stage coagulation reaction tank A20, and when the equipment stops running, solid-liquid waste in the tank body is emptied through the first emptying pipe A25.
A stirring device is arranged in the second-stage coagulation reaction tank A21 and comprises a stirring motor A1 and a stirring paddle A22, a communicating pipe A7 is arranged on the lower portion of the side wall of the second-stage coagulation reaction tank A21, sewage flows into a water distribution area A16 through a communicating pipe A7, and a second emptying pipe A8 is arranged at the bottom of the second-stage coagulation reaction tank A21. The secondary coagulation reaction tank A21 adopts a stirring paddle A22 stirring and mixing mode, which is beneficial to the uniform water outlet when sewage flows out from the secondary coagulation tank.
The water distribution area A16 is provided with a perforated pipe A17, the perforated pipe A17 is communicated with a communicating pipe A7, water outlet holes are uniformly distributed on the perforated pipe A17, an aeration pipe A18 is arranged below the perforated pipe A17, air outlet holes are uniformly distributed on the aeration pipe A18, the aeration pipe A18 is connected with an aeration port A23, the perforated pipe A17 is vertically above the aeration pipe A18, and a sludge collecting tank is arranged below the water distribution area A16; the bottom of the mud collecting groove is provided with a mud discharging pipe A5. In the water distribution area A16, the mode of uniformly mixing aeration through an aeration pipe A18 is adopted, the ion concentration of the solution near the polar plate and the concentration gradient of the bulk solution are reduced, the ferrous ions are quickly oxidized into the ferric ions by the oxygen in the air, and the flocculation phosphorus removal capability is enhanced.
Electrode plates are arranged on the upper portion of the water distribution area A16 in parallel at intervals and comprise a first electrode plate A11 and a second electrode plate A10, wherein the first electrode plate A11 is an electric connection electrode plate, the second electrode plate A10 is an induction electrode plate, the electric connection electrode plate is an iron plate or an aluminum plate, and a binding post A2 is arranged on the electric connection electrode plate. The inner wall of the accommodating groove A15 is provided with a clamping groove, and the electrode plate is inserted into the clamping groove, so that the electrode plate is convenient to disassemble and replace. The invention adopts the parallel arrangement of the induction electrode plates, increases the plate spacing between the cathode plate and the anode plate, avoids the short flow of electrolysis, increases the contact chance of pollutants in the sewage and high-concentration flocculating agent at the electrode plates, and has the polar-water ratio of 28m2：1m3The flocculation precipitation is facilitated, the electrolytic phosphorus removal efficiency is improved, and the treatment capacity per hour is over 2.5 tons; in addition, the induction electrode plate is bipolar, so that the pH value of an electrolytic area can be kept relatively stable, and the induction electrode plate has a removal effect on various metal ions.
The upper part of the accommodating groove A15 is provided with an overflow groove A14, the overflow groove A14 is provided with an overflow weir A13, the overflow weir A13 is in a tooth shape, sewage flows into an overflow groove A14 through an overflow weir A13, and the overflow groove A14 is communicated with a water outlet A4. The overflow weir A13 is designed into a tooth shape, which is beneficial to the uniform distribution of a liquid layer above the electrode plate, stable overflow, avoiding bias flow, being beneficial to the full electrolysis of sewage and preventing the generation of dead angles.
The secondary coagulation reaction tank A21 is equipped with a dosing system, and the medicament is selected from acid liquor and oxidant, wherein the acid liquor is selected from one of sulfuric acid, hydrochloric acid, sulfuric acid oxidant iron, nitric acid or phosphoric acid, and the oxidant is selected from one of hydrogen peroxide or sodium hypochlorite.
In this embodiment, the center-to-center distance of the electrode plates was set to 2 cm, and the inter-plate distance of the electrode plates was set to 1.5 cm.
When the electro-Fenton principle is applied to dephosphorization, a dosing system is started, and the pH value is adjusted to be 4; when the electric flocculation principle is applied to remove phosphorus, the pH value of the sewage is adjusted to be 8 in the raw water pool.
The electric flocculation device and the electric Fenton device adopt a high-frequency pulse power supply technology, and due to the fact that the polarity of two poles is changed frequently, electrode polarization and cathode passivation are reduced, the electrolysis efficiency is improved, the dissolution of a soluble electrode and the stability of effluent water quality are facilitated, the energy consumption and the treatment cost are reduced, and the treatment cost per ton of water is 1.5 yuan per ton of water and is less than 50% of that of the traditional process.
Example two: as shown in fig. 1 and 2, the specific process of treating sewage by the electric flocculation unit or the electric fenton unit takes the case that the electric flocculation unit and the electric fenton unit share one set of equipment: the sewage passes through the first lifting pump 241 by the water inlet pipeline, sequentially flows through the electrocoagulation unit or the electro-Fenton unit by the first flow switch 251, sequentially flows through the second lifting pump 242, the second flow switch 252, the coagulation area of the second sedimentation tank 11 and the reaction area 32, reacts for a certain time, a treated water sample flows out through the first clear water outlet pipeline 2, and the characteristics of the treated water sample are sampled and detected after the sewage treatment process is stable in operation.
The electric flocculation unit or the electric Fenton unit is provided with a high-frequency power supply I, and the first air stripping groove 14 is provided with a liquid level sensor I and used for detecting the high-low liquid level so as to achieve the purposes of early warning control of overflow of the warning water level of the first air stripping groove 14 and automatic shutdown control of the water level of the first air stripping groove 14 when the water level reaches the bottom line. And the three coagulation tanks of the second sedimentation tank 11 are respectively provided with a first stirrer 27 and a pH meter 26. A sludge discharge pipeline is designed below the second sedimentation tank 11, and a clear water outlet pipeline I2 is arranged above the sedimentation tank. The electro-fenton device 17 is equipped with an acid dosing device 5 and an oxidant dosing device 6 to which acid and/or oxidant is fed when the electro-fenton device 17 is operating. The second sedimentation tank 11 is provided with a coagulant dosing device 7, a coagulant aid dosing device 8, an alkali liquor dosing device 9 and a salt dosing device 10.
Example three: as shown in fig. 1 and 2, the specific process of treating the sewage by the electro-catalytic unit comprises the following steps: the ruthenium iridium electrocatalytic oxidation device 19 and the lead dioxide electrocatalytic oxidation device 18 are connected in parallel through a pipeline as an example. The sewage flows through the ruthenium iridium electrocatalytic oxidation device 19 or the lead dioxide electrocatalytic oxidation device 18 in sequence through the water inlet pipeline, the lift pump 241 and the flow switch II 252. In the electrocatalysis unit, ruthenium iridium electrocatalysis oxidation or/and lead dioxide electrocatalysis treatment modes can be selected and applied according to the water quality condition of the sewage. And then flows through a third lift pump 243, a third flow switch 253, a coagulation area and a reaction area of the first sedimentation tank 12 in sequence, after reacting for a certain time, a treated water sample flows out through a second clear water outlet pipeline 3, and after the sewage treatment process is stable in operation, the characteristics of the treated water sample are sampled and detected.
The lead dioxide electrocatalytic oxidation device is provided with a high-frequency power supply II, and the blow-off groove II 15 is provided with a liquid level sensor II for detecting the liquid level so as to achieve the purposes of early warning control of overflow of the warning water level of the blow-off groove II 15 water tank and automatic shutdown control of the bottom line when the water level of the blow-off groove II 15 water tank reaches the bottom line. The ruthenium iridium electrocatalytic oxidation device 19 is provided with a high-frequency power supply III, and the blow-off tank III 16 is provided with a liquid level sensor III for detecting the high and low liquid levels so as to achieve the purposes of early warning control of overflow of the warning water level of the blow-off tank III 16 water pool and automatic shutdown control of the water level of the blow-off tank III 16 water pool reaching the bottom line. The three coagulation tanks of the first sedimentation tank 12 are respectively provided with a first stirrer 27 and a pH meter 26. A sludge discharge pipeline is designed below the sedimentation tank I12, and a clear water outlet pipeline II 3 is arranged above the sedimentation tank I. The first sedimentation tank 12 is provided with a coagulant adding device 7, a coagulant aid adding device 8 and an alkali liquor adding device 9.
When the electrochemical processing unit includes a plurality of types of electrochemical processing devices, the PLC control system controls the valve switches 29 of the respective pipes to realize a combination of different electrochemical processing methods.
Example four: as shown in figures 1 and 2, the specific process of treating the sewage by the heterogeneous catalytic oxidation unit comprises the following steps: sewage passes through a lifting pump 241 by a water inlet pipeline, sequentially enters an acid regulating device 22, an iron-carbon tower 21, a Fenton tower 20 and a sedimentation tank III 13 through a flow switch I251, and after reacting for a certain time, a treated water sample flows out through a clear water outlet pipeline III 4, and the characteristics of the treated water sample are sampled and detected after the sewage treatment process is stable in operation.
The acid regulating device 22 is provided with a liquid level sensor IV for detecting the liquid level so as to achieve the purposes of early warning control of overflow of the water tank warning water level of the acid regulating device 22 and automatic shutdown control of the water tank when the water level of the water tank reaches the bottom line. And a fourth lift pump 244 and a fourth flow switch 254 are arranged on the pipeline for communicating the acid regulating device 22 with the iron-carbon tower 21. The lower part of the iron-carbon tower 21 is provided with a first aeration electromagnetic valve. And the lower part of the Fenton tower 20 is provided with a second aeration electromagnetic valve. The three coagulation tanks of the third sedimentation tank 13 are respectively provided with a stirrer I27 and a pH meter 26. A sludge discharge pipeline is designed below the third sedimentation tank 13, and a clear water outlet pipeline third 4 is arranged above the third sedimentation tank. The acid regulator 22 is provided with an acid solution adding device 5, and acid solution is delivered to the acid regulator 22 when the acid regulator is operated. The third sedimentation tank 13 is provided with a coagulant adding device 7, a coagulant aid adding device 8 and an alkali liquor adding device 9.
Example five: as shown in the figures 1 and 2, the coagulant adding device 7 is respectively connected with a first coagulation tank 30 of a first sedimentation tank 12, a second sedimentation tank 11 and a third sedimentation tank 13 through pipelines, the coagulant adding device 8 is respectively connected with a second coagulation tank 31 of the first sedimentation tank 12, the second sedimentation tank 11 and the third sedimentation tank 13 through pipelines, the alkali liquor adding device 9 is respectively connected with a third coagulation tank 32 of the first sedimentation tank 12, the second sedimentation tank 11 and the third sedimentation tank 13 through pipelines, and the salt adding device 10 is connected with a third coagulation tank 32 of the second sedimentation tank 11 through pipelines. The sewage flows to the coagulation tank II 31 and then flows to the coagulation tank III 32 through the coagulation tank I30.
And a second stirrer 33 is arranged in each dosing device, a dosing metering pump 23 is arranged on a water outlet pipeline of each dosing device, and a water outlet of the dosing metering pump 23 is connected to a reaction zone of the electro-Fenton unit, the acid regulating device 22 or a coagulation tank of each sedimentation tank through pipelines. The medicine adding device is internally provided with an upper liquid level controller and a lower liquid level controller, and the storage condition of the medicine in the medicine adding device can be known in time through the change of the indicating lamp of the medicine adding device of the PLC controller.
The skid-mounted system for electrochemically treating various kinds of sewage is controlled by a PLC control system, and different process combinations are realized aiming at different sewage quality conditions, such as the following steps:
the method 1 is applied to a sewage treatment scheme with high suspended matter content, complex organic matter content, low salt content and no chlorine, adopts a combined mode of electric flocculation and lead dioxide electrocatalysis, and comprises the steps of treating sewage by an electric flocculation unit, a sedimentation tank II 11, a lead dioxide electrocatalysis oxidation device 18 and a sedimentation tank I12 in sequence, finally flowing out by a clear water pipeline, finishing the treatment, and carrying out sample detection.
The method 2 is applied to a sewage treatment scheme with high suspended matter, complex organic matter content, high salt content and high chloride ion content, and adopts a combination mode of electric flocculation and ruthenium-iridium electrocatalysis. The sewage is treated by an electric flocculation unit, a sedimentation tank II 11, a ruthenium iridium electrocatalytic oxidation device 19 and a sedimentation tank I12 in sequence, and finally flows out through a clear water pipeline, the treatment is finished, and the sample sending detection is carried out.
The method 3 is applied to a sewage treatment scheme with low suspended matters, complex organic matter content, low salt and no chlorine, and adopts a lead dioxide electrocatalysis treatment mode. And the sewage is treated by the second sedimentation tank 11, the lead dioxide electrocatalytic oxidation device 18 and the first sedimentation tank 12 in sequence, and finally flows out through a clean water pipeline, so that the treatment is finished, and the sample sending detection is carried out.
The method 4 is applied to a sewage treatment scheme with low suspended matters, complex organic matter content, high salt content and high chloride ion content, and adopts a ruthenium-iridium electrocatalytic treatment mode. And the sewage is treated by a second sedimentation tank 11, a ruthenium-iridium electrocatalytic oxidation device 19 and a first sedimentation tank 12 in sequence, and finally flows out through a clear water pipeline, and the treatment is finished and the sample sending detection is carried out.
The method 5 is applied to a sewage treatment scheme with low conductivity, complex organic matter content, difficult one-time removal, low salt and no chlorine, and adopts a mode of combining lead dioxide electrocatalysis and a heterogeneous catalytic oxidation unit. And the sewage is treated by a second sedimentation tank 11, a lead dioxide electrocatalytic oxidation device 18, a first sedimentation tank 12, a multiphase catalytic oxidation unit and a third sedimentation tank 13 in sequence, and finally flows out through a clean water pipeline, so that the treatment is finished, and the sample conveying detection is carried out.
The method 6 is applied to a sewage treatment scheme with low conductivity, complex organic matter content, difficult one-step removal, high salt content and high chloride ion content, and adopts a mode of combining ruthenium-iridium electrocatalysis and a heterogeneous catalytic oxidation unit. And the sewage is treated by a second sedimentation tank 11, a lead dioxide electrocatalytic oxidation device 18, a first sedimentation tank 12, a multiphase catalytic oxidation unit and a third sedimentation tank 13 in sequence, and finally flows out through a clean water pipeline, so that the treatment is finished, and the sample conveying detection is carried out.
The method 7 is applied to a sewage treatment scheme without suspended matters, complex organic matter content, difficult one-time removal, low salt and chlorine, and adopts a mode of combining a lead dioxide electro-catalysis unit, an electro-Fenton unit and a multi-phase catalytic oxidation unit. The sewage is sequentially treated by a lead dioxide electrocatalytic oxidation device 18, a first sedimentation tank 12, an electro-Fenton unit, a second sedimentation tank 11, a multiphase catalytic oxidation unit and a third sedimentation tank 13, and finally flows out through a clean water pipeline, so that the treatment is finished, and the sample conveying detection is carried out.
The method 8 is applied to a sewage treatment scheme which has no suspended matters, complex organic matter content, difficult one-step removal, high salt content and high chloride ion content, and adopts a mode of combining ruthenium-iridium electrocatalysis, an electro-Fenton unit and a multiphase catalytic oxidation unit. The sewage is treated by a ruthenium iridium electrocatalytic oxidation device 19, a first sedimentation tank 12, an electro-Fenton unit, a second sedimentation tank 11, a multiphase catalytic oxidation unit and a third sedimentation tank 13 in sequence, and finally flows out through a clean water pipeline, so that the treatment is finished, and the sample conveying detection is carried out.
The method 9 is applied to a sewage treatment scheme without suspended matters, complex organic matter content, low salt and chlorine, and adopts a mode of combining lead dioxide electro-catalysis and electro-Fenton units. The sewage sequentially passes through a lead dioxide electrocatalytic oxidation device 18, a first sedimentation tank 12, an electro-Fenton unit and a second sedimentation tank 11, finally flows out through a clear water pipeline, is treated and is subjected to sample sending detection.
The method 10 is applied to a sewage treatment scheme which has no suspended matters, complex organic matter content, high salt content, high chloride ion content and reduced salt content, and adopts a mode of combining ruthenium-iridium electrocatalysis and electro-Fenton units. The sewage sequentially passes through a ruthenium iridium electrocatalytic oxidation device 19, a first sedimentation tank 12, an electro-Fenton unit and a second sedimentation tank 11, finally flows out through a clear water pipeline, is treated and is sent for detection.
The method 11 is applied to a sewage treatment scheme without suspended matters, complex organic matter content, low salt and chlorine, and adopts an electro-Fenton unit treatment mode. And the sewage sequentially passes through the first sedimentation tank 12, the electro-Fenton unit and the second sedimentation tank 11 and finally flows out through a clean water pipeline, the treatment is finished, and the sample conveying detection is carried out.
The method 12 is applied to a sewage treatment scheme with high suspended matter, high COD and difficult primary removal, and adopts a mode of combining an electro-Fenton unit and a heterogeneous catalytic oxidation unit. And the sewage is treated by a first sedimentation tank 12, an electro-Fenton unit, a second sedimentation tank 11, a multiphase catalytic oxidation unit and a third sedimentation tank 13 in sequence, and finally flows out through a clear water pipeline, so that the treatment is finished, and the sample sending detection is carried out.
The method 13 is applied to a sewage treatment scheme with no suspended matters, no hydrogen peroxide and complex water quality, and adopts a lead dioxide electrocatalysis treatment mode. The sewage sequentially passes through the lead dioxide electrocatalytic oxidation device 18 and the sedimentation tank I12, finally flows out through a clean water pipeline, is treated and is sent for detection.
The method 14 is applied to a sewage treatment scheme which does not have suspended matters and needs decoloring treatment, and adopts a ruthenium-iridium electrocatalysis treatment mode. The sewage sequentially passes through a ruthenium iridium electrocatalytic oxidation device 19 and a sedimentation tank I12, finally flows out through a clear water pipeline, is treated and is sent to a sample for detection.
The method 15 is applied to a sewage treatment scheme which does not contain suspended matters and needs decoloring treatment, and adopts an electro-Fenton unit treatment mode. And the sewage sequentially passes through the electro-Fenton unit and the sedimentation tank II 11 and finally flows out through a clear water pipeline, the treatment is finished, and the sample sending detection is carried out.
The method 16 is applied to a sewage treatment scheme without suspended matters and high COD, and adopts a treatment mode combining lead dioxide electrocatalysis and a multiphase catalytic oxidation unit. The sewage is sequentially treated by a lead dioxide electrocatalytic oxidation device 18, a first sedimentation tank 12, a multiphase catalytic oxidation unit and a third sedimentation tank 13, and finally flows out through a clear water pipeline, the treatment is finished, and the sample sending detection is carried out.
The method 17 is applied to a sewage treatment scheme without suspended matters, needing decoloration and high COD, and adopts a treatment mode combining ruthenium-iridium electrocatalysis and multiphase catalytic oxidation units. The sewage is treated by a ruthenium iridium electrocatalytic oxidation device 19, a first sedimentation tank 12, a multiphase catalytic oxidation unit and a third sedimentation tank 13 in sequence, and finally flows out through a clear water pipeline, the treatment is finished, and the sample sending detection is carried out.
The method 18 is applied to a sewage treatment scheme with high suspended matters and high COD, and adopts a treatment mode of combining an electro-Fenton unit and a multiphase catalytic oxidation unit. And the sewage is treated by the electro-Fenton unit, the second sedimentation tank 11, the multiphase catalytic oxidation unit and the third sedimentation tank 13 in sequence, and finally flows out through a clean water pipeline, so that the treatment is finished, and the sample sending detection is carried out.
The effect experiment data of each basic unit for treating various kinds of sewage are as follows:
total metal parameter removal by electroflocculation
COD parameter removal by electrocoagulation
Total phosphorus removal parameter by electroflocculation
electro-Fenton removal of COD parameters
electro-Fenton removal of Total phosphorus parameter
COD parameter removal by ruthenium and iridium electrocatalysis
Total phosphorus removal parameter by ruthenium iridium electrocatalytic removal
Parameters for ruthenium iridium electrocatalytic removal of total nitrogen
Parameters for removing ammonia nitrogen by ruthenium-iridium electrocatalysis
Electrocatalytic ruthenium-iridium removal of chromaticity parameters
Lead dioxide electrocatalysis removal COD parameter
Parameters for electrocatalytic removal of phenol by lead dioxide
Before the skid-mounted system for electrochemically treating various kinds of sewage is operated, a beaker experiment is firstly carried out, the types and the contents of pollutants in the sewage and the pH value of the sewage are preliminarily confirmed, and a combined mode suitable for sewage treatment is selected according to the effect experiment data of treating various kinds of sewage by each basic unit. After the sewage is treated by the combination of the processes, if the sewage does not reach the national sewage discharge standard, the sewage can be operated in a multi-stage treatment mode until the sewage reaches the national sewage discharge standard.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that several modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.
Claims (10)
1. The utility model provides a skid-mounted system of multiple sewage of electrochemical treatment, includes sewage inlet channel and clear water outlet conduit, its characterized in that: an electric flocculation unit, an electric Fenton unit, an electrocatalytic oxidation unit, a multiphase catalytic oxidation unit, a sedimentation tank and a dosing system are arranged between the sewage inlet pipeline and the clear water outlet pipeline;
the electric flocculation unit, the electric Fenton unit, the electric catalytic oxidation unit and the multiphase catalytic oxidation unit are connected in parallel through pipelines, the electric flocculation unit and/or the electric Fenton unit are/is connected with the second sedimentation tank (11) in series through pipelines, the electric catalytic oxidation unit is connected with the first sedimentation tank (12) in series through pipelines, and the multiphase catalytic oxidation unit is connected with the third sedimentation tank (13) in series through pipelines;
the electric flocculation unit comprises a blow-off tank and an electric flocculation device;
the electro-Fenton unit comprises an air stripping tank and an electro-Fenton device;
the electrocatalytic oxidation unit comprises a stripping tank and one or more electrocatalytic oxidation devices, and each electrocatalytic oxidation device is provided with one stripping tank;
the heterogeneous catalytic oxidation unit is formed by sequentially connecting an acid regulating device (22), an iron-carbon tower (21) and a Fenton tower (20) in series through pipelines;
the water outlet end of the sedimentation tank II (11) is a three-way pipe, wherein one end of the three-way pipe is connected with the clean water outlet pipeline I (2), and the other end of the three-way pipe is connected with the acid regulating device (22);
the water outlet end of the first sedimentation tank (12) is a three-way pipe, one end of the three-way pipe is connected with the clean water outlet pipe II (3), and the other end of the three-way pipe is connected with the water inlet pipe of the electro-Fenton unit;
the dosing system consists of one or more dosing devices, and a dosing metering pump (23) is arranged on a water outlet pipeline of each dosing device;
the electro-Fenton device and/or the electro-flocculation device (17), the acid regulating device (22), the first sedimentation tank (12), the second sedimentation tank (11) and the third sedimentation tank (13) are provided with chemical dosing devices;
the skid-mounted system realizes combination of different processes by controlling the valve switches (29) of the pipelines through a PLC control system.
2. The skid-mounted system for electrochemically treating multiple kinds of sewage according to claim 1, wherein the front end of the water inlet pipeline is connected with a raw water pool (1), and a liquid level controller is installed at the lower part of the inner side of the raw water pool (1).
3. The skid-mounted system for electrochemically treating a plurality of effluents according to claim 1, wherein the electrocoagulation unit and the electro-Fenton unit share a single device.
4. The skid-mounted system for electrochemically treating a plurality of effluents according to claim 1, wherein the electrocatalytic oxidation device is selected from one or more of the group consisting of an antimony electrocatalytic oxidation device, an iridium electrocatalytic oxidation device, a tantalum electrocatalytic oxidation device, a selenium dioxide electrocatalytic oxidation device, a ruthenium iridium electrocatalytic oxidation device (19), and a lead dioxide electrocatalytic oxidation device (18).
5. The skid-mounted system for electrochemically treating a plurality of kinds of sewage according to claim 4, wherein the electrocatalytic oxidation unit comprises a plurality of electrocatalytic oxidation devices, and the plurality of electrocatalytic oxidation devices are connected in parallel through a pipeline.
6. The skid-mounted system for electrochemically treating a plurality of types of wastewater according to claim 1, wherein:
the electro-Fenton unit and/or the electro-flocculation unit and the acid regulating device (22) are provided with an acid liquor feeding device (5) and an oxidant feeding device (6), and the acid liquor is selected from one of sulfuric acid, hydrochloric acid, ferric sulfate, nitric acid and phosphoric acid; the oxidant is selected from one of hydrogen peroxide and sodium hypochlorite;
the first sedimentation tank (12) and the third sedimentation tank (13) are provided with a coagulant dosing device (7), a coagulant aid dosing device (8) and an alkali liquor dosing device (9);
the second sedimentation tank 11 is provided with a coagulant dosing device (7), a coagulant aid dosing device (8), an alkali liquor dosing device (9) and a salt dosing device 10;
the coagulant is selected from one of polyaluminium chloride (PAC), aluminum sulfate, ferrous sulfate heptahydrate, ferric chloride, ferrous sulfate and alum; the coagulant aid is selected from one of polyacrylamide, Polyacrylamide (PAM) and polypropylene; the salt is selected from one of calcium chloride and calcium carbonate; the alkali liquor is selected from one of sodium hydroxide and calcium hydroxide.
7. The skid-mounted system for electrochemically treating a plurality of effluents according to claim 6, wherein said acid is selected from the group consisting of sulfuric acid, said oxidizing agent is selected from the group consisting of hydrogen peroxide, said coagulating agent is selected from the group consisting of polyaluminum chloride (PAC), said coagulant aid is selected from the group consisting of Polyacrylamide (PAM), said salt is selected from the group consisting of calcium chloride, and said base is selected from the group consisting of sodium hydroxide.
8. The skid-mounted system for electrochemically treating a plurality of effluents according to claim 1 wherein the settling tank comprises a coagulation zone and a reaction zone (32).
9. The skid-mounted system for electrochemically treating a plurality of kinds of sewage according to any one of the preceding claims 1 to 8, wherein the raw water tank (1), the acid regulating device (22), the electrocoagulation device (17), the electro-Fenton device (17), the sedimentation tank (11, 12, 13), the electro-catalytic oxidation device, the iron-carbon tower (21), the Fenton tower (20), the dosing device and the blow-off tank are all made of transparent materials selected from organic glass (PMMA), polyvinyl chloride (PVC), Polycarbonate (PC) and polypropylene (PP).
10. A skid-mounted system for electrochemical treatment of multiple effluents according to any one of claims 1 to 8 wherein said skid-mounted system is equipped with an automatic safety monitoring alarm system for monitoring and alarming leakage, tank overflow, low liquid level and overflow.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911269231.1A CN111018200A (en) | 2019-12-11 | 2019-12-11 | Skid-mounted system for electrochemically treating various kinds of sewage |
| CN2019112692311 | 2019-12-11 |
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| CN111646608A true CN111646608A (en) | 2020-09-11 |
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| CN201911269231.1A Pending CN111018200A (en) | 2019-12-11 | 2019-12-11 | Skid-mounted system for electrochemically treating various kinds of sewage |
| CN202010475265.2A Pending CN111470679A (en) | 2019-12-11 | 2020-05-29 | Pretreatment method of waste emulsion |
| CN202010654966.2A Pending CN111646608A (en) | 2019-12-11 | 2020-07-09 | Skid-mounted system for electrochemically treating various kinds of sewage |
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| CN201911269231.1A Pending CN111018200A (en) | 2019-12-11 | 2019-12-11 | Skid-mounted system for electrochemically treating various kinds of sewage |
| CN202010475265.2A Pending CN111470679A (en) | 2019-12-11 | 2020-05-29 | Pretreatment method of waste emulsion |
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| CN111018200A (en) * | 2019-12-11 | 2020-04-17 | 浙江美纳环保科技有限公司 | Skid-mounted system for electrochemically treating various kinds of sewage |
| CN111423067A (en) * | 2020-04-20 | 2020-07-17 | 中国市政工程华北设计研究总院有限公司 | Multifunctional advanced treatment combined system for town sewage and operation method thereof |
| CN112960820A (en) * | 2021-03-08 | 2021-06-15 | 沈阳大学 | Method for treating C5 resin wastewater containing metaaluminate |
| CN113929262A (en) * | 2021-10-18 | 2022-01-14 | 包头钢铁（集团）有限责任公司 | Waste emulsion and phosphating wastewater co-treatment system and co-treatment process thereof |
| CN114804513A (en) * | 2022-04-11 | 2022-07-29 | 中国环境科学研究院 | Mobile water pollution emergency disposal process integration platform |
| CN114956273B (en) * | 2022-04-12 | 2023-09-29 | 科盛环保科技股份有限公司 | Electrochemical treatment device and process for improving biodegradability of traditional Chinese medicine wastewater |
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| CN111470679A (en) | 2020-07-31 |
| CN111018200A (en) | 2020-04-17 |
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Application publication date: 20200911 |