CN114735862A - Municipal drainage pipe network sewage reposition of redundant personnel processing system - Google Patents
Municipal drainage pipe network sewage reposition of redundant personnel processing system Download PDFInfo
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- CN114735862A CN114735862A CN202210473304.4A CN202210473304A CN114735862A CN 114735862 A CN114735862 A CN 114735862A CN 202210473304 A CN202210473304 A CN 202210473304A CN 114735862 A CN114735862 A CN 114735862A
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- 239000010865 sewage Substances 0.000 title claims abstract description 30
- 238000012545 processing Methods 0.000 title claims description 8
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 36
- 239000002351 wastewater Substances 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 26
- 230000003647 oxidation Effects 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910001868 water Inorganic materials 0.000 claims abstract description 21
- 230000003197 catalytic effect Effects 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000010802 sludge Substances 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000005345 coagulation Methods 0.000 claims description 18
- 230000015271 coagulation Effects 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 13
- 238000005188 flotation Methods 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 230000005465 channeling Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000008139 complexing agent Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 6
- 239000012028 Fenton's reagent Substances 0.000 abstract description 3
- 239000013543 active substance Substances 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 239000006260 foam Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Images
Classifications
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- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/5281—Installations for water purification using chemical 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a sewage split-flow treatment system for a municipal drainage pipe network. In the invention, catalytic oxidation reaction is utilized to induce and generate various forms of strong oxidation active substances, in particular 0H free radicals with extremely strong oxidation capability. It reacts almost indiscriminately with organic pollutants in wastewater, completely oxidizes organic matters into carbon dioxide, water and minerals, and does not produce new pollution, thereby improving the environmental protection of the method in the treatment process. Scrap iron used in wastewater treatment is generally shaving or waste scrap iron, so that the use cost is reduced; the service life is long, the operation and maintenance are convenient, the micro-electrolysis reactor only needs to be periodically added with scrap iron, and the inert electrode does not need to be replaced; the micro-electrolysis method and the Fenton reagent method are combined to treat the industrial wastewater, the one-time investment and the operation cost are low, the occupied area is small, the system structure is simple, the whole device is easy to shape and industrialize in equipment manufacturing, and the operation is simple.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage flow-dividing treatment system for a municipal drainage pipe network.
Background
The urban drainage is a drainage mode for collecting, conveying, treating and discharging urban sewage and rainwater by an urban drainage system. The drainage system is an important infrastructure of a modern city, and how to economically and technically optimize and reconstruct the drainage system of the city is an important research subject. How to reasonably design the urban drainage system under various specified technical conditions is an important subject in planning and designing, and therefore, China has come up with an urban drainage permission management method and aims to solve the problems. In the use process of urban drainage, sewage needs to be treated.
However, the conventional treatment method may cause generation of new pollutants when in use, thereby causing inconvenience in use.
Disclosure of Invention
The invention aims to: in order to solve the problem, the sewage diversion treatment system for the municipal drainage pipe network is provided.
The technical scheme adopted by the invention is as follows: the utility model provides a municipal drainage pipe network sewage reposition of redundant personnel processing system, municipal drainage pipe network sewage reposition of redundant personnel processing system includes following step:
s1, firstly, carrying out shunting pretreatment on the generated wastewater, collecting the wastewater after the wastewater is separated into a regulating reservoir to regulate the water quality and water quantity, then conveying the wastewater to a DEA reaction clarifier through a first-stage lift pump, introducing the wastewater from the bottom, and leading the effluent out of a water outlet tank to enter an inclined plate sedimentation tank;
s2, overflowing the supernatant in the inclined plate sedimentation tank to a coagulation air flotation tank to further remove suspended and colloidal pollutants in the wastewater;
s3, feeding a coagulation reagent into a coagulation reaction tank through a dosing metering pump, fully mixing the coagulation reagent with the wastewater under the action of a mechanical stirrer, and feeding the mixture into a human air flotation separation tank;
s4, forming a scum layer with a certain density at the middle upper part of the separation zone under the action of micro bubbles due to the fact that the water flow speed is reduced and the flocs are further increased, removing scum by a scum scraper, and leading out effluent from an effluent weir;
s5, adjusting the pH value of the effluent, entering a micro-electrolysis reactor for micro-electrolysis reaction, and degrading macromolecular organic matters into micromolecular organic matters; the micro-electrolysis reactor is formed by connecting two reaction zones in series, and wastewater enters from the bottom of the first reactor zone;
s6, adjusting the pH value of the micro-electrolysis effluent to 3.0-4.0 through a static mixer, carrying out catalytic oxidation on the micro-electrolysis effluent in a reactor, and further oxidizing organic matters under the action of OH free radicals;
s7, adding a catalyst and an oxidant respectively through a metering pump to start reaction;
s8, after the reaction is finished, adding alkali liquor to adjust the acid effluent of catalytic oxidation to be neutral (namely the pH value is 6.0-7.0), and then discharging the treated effluent into a drainage pipe network sewage plant for sewage treatment; the two catalytic oxidation reactors are alternately switched for use;
and S9, treating the generated sludge, namely treating the sludge and scum discharged from the inclined plate sedimentation tank, the coagulation air flotation tank and the catalytic oxidation reactor and the waste residues discharged in the micro-electrolysis regeneration process, and finishing the whole treatment process after treating the waste residues.
In a preferred embodiment, in step S1, a trace amount of the special yl-activated biocomposite is added to the inlet of the pump, the wastewater stays in the inclined plate sedimentation tank for a long time, and sludge and suspended matters in the effluent of the reaction clarifier are separated.
In a preferred embodiment, in step S5, the pH of the effluent of the coagulation air flotation tank is adjusted to 3.0-4.0 by an acid-water mixer.
In a preferred embodiment, in step S5, a plurality of water and gas distribution pipes are provided in the reactor, so that the wastewater can uniformly contact and react with the packing and prevent hardened channeling of the packing.
In a preferred embodiment, in step S5, the top of the reactor is provided with a demister, which can effectively remove foam generated during the micro-electrolysis reaction.
In a preferred embodiment, in step S5, after the micro-electrolysis reactor is operated for a certain period of time, the filler is regenerated by the regeneration liquid, so as to ensure long-term operation of the reactor.
In a preferred embodiment, in step S9, the sludge is discharged through a sludge discharge pipe, pumped to a concentration and dehydration integrated device by a sludge pump, concentrated and dehydrated, and the dehydrated sludge cake is transported to an external processing unit; and discharging the separated wastewater into a regulating tank and then into a treatment system.
In a preferred embodiment, in step S9, the alkali neutralization process of the treated acidic effluent is combined into a catalytic oxidation reactor, so that one of the two reactors performs catalytic oxidation, the other one performs alkali neutralization, and the two reactors operate alternately.
In a preferred embodiment, in step S6, the micro-electrolysis reactor adopts periodic slag removal, cleaning, high-flow liquid feeding, air blasting loosening, alternating forward and reverse operation of wastewater flow, a single-layer filling layer with a lower height than a pilot plant, and the like, so as to solve the problem of blockage prevention of the equipment and enable the equipment to operate stably.
In a preferred embodiment, in step S5, the micro-electrolysis process forms a galvanic cell, and the iron filler in the galvanic cell is consumed in the production process, and the iron filler consumed needs to be replenished and replaced after running for a certain time.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, catalytic oxidation reaction is utilized to induce and generate various forms of strong oxidation active substances, in particular 0H free radicals with extremely strong oxidation capability. The method almost indiscriminately reacts with organic pollutants in the sewage of the municipal drainage pipe network, thoroughly oxidizes organic matters into carbon dioxide, water and mineral substances, and does not generate new pollution, thereby improving the environmental protection property of the method in the treatment process.
2. In the invention, the scrap iron used in the wastewater treatment is generally shaving or waste scrap iron, so that the use cost is reduced; the service life is long, the operation and maintenance are convenient, the micro-electrolysis reactor only needs to be added with scrap iron regularly, and the inert electrode does not need to be replaced; the micro-electrolysis method and the Fenton reagent method are combined to treat industrial wastewater, so that the one-time investment and the running cost are low, the occupied area is small, the system structure is simple, the whole device is easy to shape and industrialize in equipment manufacturing, and the operation is simple.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the utility model provides a municipal drainage pipe network sewage reposition of redundant personnel processing system, municipal drainage pipe network sewage reposition of redundant personnel processing system includes following step:
s1, performing flow-splitting pretreatment on the generated wastewater, collecting the de-powdering wastewater to a regulating reservoir to regulate the water quality and water quantity, conveying the de-powdering wastewater to a DEA reaction clarifier through a first-stage lift pump, introducing the wastewater from the bottom, and discharging the effluent from a water outlet tank to an inclined plate sedimentation tank;
s2, overflowing the supernatant in the inclined plate sedimentation tank to a coagulation air flotation tank to further remove suspended and colloidal pollutants in the wastewater;
s3, feeding a coagulation reagent into a coagulation reaction tank through a dosing metering pump, fully mixing the coagulation reagent with the wastewater under the action of a mechanical stirrer, and feeding the mixture into a human air flotation separation tank;
s4, forming a scum layer with a certain density at the middle upper part of the separation area under the action of micro bubbles because the water flow speed is reduced and the flocs are further increased, removing scum by a scum scraper, and leading out effluent by an effluent weir;
s5, adjusting the pH value of the effluent, entering a micro-electrolysis reactor for micro-electrolysis reaction, and degrading macromolecular organic matters into micromolecular organic matters; the micro-electrolysis reactor is formed by connecting two reaction zones in series, and wastewater enters from the bottom of the first reactor zone;
s6, adjusting the pH value of the micro-electrolysis effluent to 3.0-4.0 through a static mixer, carrying out catalytic oxidation on the micro-electrolysis effluent in a reactor, and further oxidizing organic matters under the action of OH free radicals;
s7, adding a catalyst and an oxidant respectively through a metering pump to start reaction;
s8, after the reaction is finished, adding alkali liquor to adjust the acid effluent of catalytic oxidation to be neutral (namely the pH value is 6.0-7.0), and then discharging the treated effluent into a drainage pipe network sewage plant for sewage treatment; the two catalytic oxidation reactors are alternately switched for use;
and S9, treating the generated sludge, namely treating the sludge and scum discharged from the inclined plate sedimentation tank, the coagulation air flotation tank and the catalytic oxidation reactor and the waste residues discharged in the micro-electrolysis regeneration process, and finishing the whole treatment process after treating the waste residues.
In step S1, adding a trace amount of special yl active biological complexing agent into the inlet of the pump, allowing the wastewater to stay in the inclined plate sedimentation tank for a long time, and separating sludge and suspended matters in the effluent of the reaction clarifier.
In step S5, the pH value of the effluent of the coagulation air flotation tank is adjusted to 3.0-4.0 by an acid-water mixer.
In step S5, a plurality of water and gas distribution pipes are disposed in the reactor, so that the wastewater can uniformly contact and react with the filler, and hardened channeling of the filler is prevented.
In step S5, a demister is disposed at the top of the reactor to effectively remove foam generated during the micro-electrolysis reaction.
In step S5, after the micro-electrolysis reactor operates for a certain time, the filler is regenerated by the regenerated liquid, so that the long-period operation of the reactor is ensured.
In step S5, the micro-electrolysis reaction process forms a galvanic cell, and the iron filler in the galvanic cell is consumed in the production process, and the iron filler consumed needs to be replenished and replaced when the galvanic cell runs for a certain time.
In step S9, the sludge is discharged through a sludge discharge pipe, is pumped to concentration and dehydration integrated equipment by a sludge pump for concentration and dehydration, and the dehydrated mud cake is transported outside; and discharging the separated wastewater into a regulating tank and then into a treatment system.
In step S9, the alkali-adding neutralization process of the treated acidic effluent is combined into the catalytic oxidation reactor, so that one of the two reactors performs catalytic oxidation, the other one completes alkali-adding neutralization, and the two reactors operate alternately.
In step S6, the micro-electrolysis reactor adopts the modes of periodic slag discharge, cleaning, large-flow liquid feeding, blast loosening, forward and reverse alternate operation of wastewater flow, single-layer filling layer with lower height than a pilot plant and the like, so that the anti-blocking problem of the equipment is solved, and the equipment can stably run.
In the invention, catalytic oxidation reaction is utilized to induce and generate various forms of strong oxidation active substances, in particular 0H free radicals with extremely strong oxidation capability. It reacts almost indiscriminately with organic pollutants in wastewater, completely oxidizes organic matters into carbon dioxide, water and minerals, and does not produce new pollution, thereby improving the environmental protection of the method in the treatment process.
Meanwhile, scrap iron used in the wastewater treatment is generally wood shavings or waste scrap iron, so that the use cost is reduced; the service life is long, the operation and maintenance are convenient, the micro-electrolysis reactor only needs to be added with scrap iron regularly, and the inert electrode does not need to be replaced; the micro-electrolysis method and the Fenton reagent method are combined to treat the industrial wastewater, the one-time investment and the operation cost are low, the occupied area is small, the system structure is simple, the whole device is easy to shape and industrialize in equipment manufacturing, and the operation is simple.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a municipal drainage pipe network sewage reposition of redundant personnel processing system which characterized in that: the urban drainage pipe network sewage flow-dividing treatment system comprises the following steps in operation:
s1, performing flow-splitting pretreatment on the generated wastewater, collecting the de-powdering wastewater to a regulating reservoir to regulate the water quality and water quantity, conveying the de-powdering wastewater to a DEA reaction clarifier through a first-stage lift pump, introducing the wastewater from the bottom, and discharging the effluent from a water outlet tank to an inclined plate sedimentation tank;
s2, overflowing the supernatant in the inclined plate sedimentation tank to a coagulation air flotation tank to further remove suspended and colloidal pollutants in the wastewater;
s3, feeding a coagulation reagent into a coagulation reaction tank through a dosing metering pump, fully mixing the coagulation reagent with the wastewater under the action of a mechanical stirrer, and feeding the mixture into a human air flotation separation tank;
s4, forming a scum layer with a certain density at the middle upper part of the separation area under the action of micro bubbles because the water flow speed is reduced and the flocs are further increased, removing scum by a scum scraper, and leading out effluent by an effluent weir;
s5, adjusting the pH value of the effluent, entering a micro-electrolysis reactor for micro-electrolysis reaction, and degrading macromolecular organic matters into micromolecular organic matters; the micro-electrolysis reactor is formed by connecting two reaction zones in series, and wastewater enters from the bottom of the first reactor zone;
s6, adjusting the pH value of the micro-electrolysis effluent to 3.0-4.0 through a static mixer, carrying out catalytic oxidation on the micro-electrolysis effluent in a reactor, and further oxidizing organic matters under the action of OH free radicals;
s7, adding a catalyst and an oxidant respectively through a metering pump to start reaction;
s8, after the reaction is finished, adding alkali liquor to adjust the acid effluent of catalytic oxidation to be neutral, namely the pH value is 6.0-7.0, and then discharging the treated effluent into a drainage pipe network sewage plant for sewage treatment;
and S9, treating the generated sludge, namely treating the sludge and scum discharged from the inclined plate sedimentation tank, the coagulation air flotation tank and the catalytic oxidation reactor and the waste residues discharged in the micro-electrolysis regeneration process, and finishing the whole treatment process after treating the waste residues.
2. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in the step S1, a trace amount of special yl active biological complexing agent is added at the inlet of the pump, the wastewater stays in the inclined plate sedimentation tank for a long time, and sludge and suspended matters in the effluent of the reaction clarifier are separated.
3. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in the step S5, the pH value of the effluent of the coagulation air flotation tank is adjusted to 3.0-4.0 through an acid-water mixer.
4. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in step S5, the reactor is provided with a plurality of water and air distribution pipes, so that the wastewater can uniformly contact and react with the filler, and the filler is prevented from hardening and channeling.
5. The municipal drainage pipe network sewage split-flow treatment system according to claim 1, wherein: in step S5, a demister is disposed at the top of the reactor, so that bubbles generated during the micro-electrolysis reaction can be effectively eliminated.
6. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in the step S5, after the micro-electrolysis reactor is operated for a certain time, the filler is regenerated by the regeneration liquid, so as to ensure long-period operation of the reactor.
7. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in the step S9, the sludge is discharged through a sludge discharge pipe, is pumped to concentration and dehydration integrated equipment by a sludge pump, is concentrated and dehydrated, and is transported outside a dehydrated mud cake; and discharging the separated wastewater into a regulating tank and then into a treatment system.
8. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in step S9, the alkali-adding neutralization process of the treated acidic effluent is combined into the catalytic oxidation reactor, so that one of the two reactors performs catalytic oxidation, the other one completes alkali-adding neutralization, and the two reactors operate alternately.
9. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in the step S6, the micro-electrolysis reactor adopts the modes of periodic slag discharge, cleaning, large-flow liquid feeding, blast loosening, forward and reverse alternative operation of wastewater flow, a single-layer filling layer with a lower height than a pilot plant and the like, so that the problem of blockage prevention of equipment is solved, and the equipment can stably run.
10. The sewage split-flow treatment system of the municipal drainage pipe network according to claim 1, wherein: in the step S5, the primary battery is formed in the micro-electrolysis process, and the iron filler in the primary battery is consumed in the production process, and the iron filler is required to be replenished and replaced when the primary battery is operated for a certain time.
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| CN106430790A (en) * | 2016-11-22 | 2017-02-22 | 南京大学盐城环保技术与工程研究院 | Method for reducing COD (chemical oxygen demand) of permanent violet process wastewater and application of method |
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2022
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| CN106430790A (en) * | 2016-11-22 | 2017-02-22 | 南京大学盐城环保技术与工程研究院 | Method for reducing COD (chemical oxygen demand) of permanent violet process wastewater and application of method |
| CN106977060A (en) * | 2017-05-23 | 2017-07-25 | 舟山风扬环保科技有限公司 | A kind of chlopyrifos production wastewater treatment system and method for wastewater treatment |
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Application publication date: 20220712 |