CN217103411U - Mobile photoelectric complementary sewage deep purification system - Google Patents

Mobile photoelectric complementary sewage deep purification system Download PDF

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CN217103411U
CN217103411U CN202121224870.9U CN202121224870U CN217103411U CN 217103411 U CN217103411 U CN 217103411U CN 202121224870 U CN202121224870 U CN 202121224870U CN 217103411 U CN217103411 U CN 217103411U
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tank
sewage
water
purification system
outlet
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聂晓燕
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Haoyu Xiamen Environmental Protection Co ltd
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Haoyu Xiamen Environmental Protection Co ltd
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Abstract

The utility model belongs to environmental protection technology and environmental protection equipment field relate to a sewage treatment system, in particular to portable photoelectric complementary sewage deep purification system, including the container that can hoist and mount, integrated sewage deep purification system in the container and set up in the photovoltaic power generation device on container surface, sewage deep purification system includes coagulating sedimentation device and ion catalysis electrolysis denitrification facility. Adopt the utility model provides a complementary sewage deep purification system of portable photoelectricity carries out purification treatment to little water yield sewage or small contaminated water, and not only it is high to go out water quality of water, is convenient for remove, and the construction installation time is short, can the energy saving moreover, and green is applicable to very much and pollutes water body treatment and the emergent engineering construction needs of sewage treatment.

Description

Mobile photoelectric complementary sewage deep purification system
Technical Field
The utility model belongs to environmental protection technology and environmental protection equipment field relate to a sewage treatment system, in particular to complementary sewage deep purification system of portable photoelectricity.
Background
The sewage is a polluted water body generated in the living and production processes of people. The main pollutants of municipal sewage in China have the characteristic of high north and south, and the general physical and chemical index is that COD is less than or equal to 700mg/L (most of the COD is 200-500 mg/L, wherein most of COD in southern areas Cr ≤400mg/L)、BOD 5 Less than or equal to 350mg/L (mostly 100-300 mg/L, BOD less than or equal to 200mg/L in southern areas), SS less than or equal to 400mg/L, ammonia nitrogen less than or equal to 35mg/L, total nitrogen less than or equal to 50mg/L and total phosphorus less than or equal to 8mg/L, pH 7-9. At present, the domestic and foreign sewage treatment method mainly adopts a biochemical method, and since the biochemical treatment process of the sewage in Clark in 1912, the sewage treatment process is hardly changed greatly for more than 100 years, and comprises primary treatment, secondary treatment and advanced treatment. The first-stage treatment mainly comprises sewage collection, coarse grid filtration and fine grid filtration to a sand settling tank and a primary settling tank; the main process of the secondary treatment comprises the following steps: three major types of processes, namely, an activated sludge process, a biofilm process and a Membrane Bioreactor (MBR). The activated sludge treatment process applied to the domestic sewage treatment plant mainly comprises three series: (1) oxidation ditch series; (2) A/A/O series; (3) sequencing Batch Reactor (SBR) series. The biofilm process applied to the sewage treatment plant is mainly a Biological Aerated Filter (BAF) process and a Moving Bed Biofilm (MBBR) process. Membrane Bioreactors (MBR) are a new type of wastewater treatment process developed at the end of the 20 th century. The advanced treatment process applied at home and abroad mainly comprises a chemical dephosphorization and denitrification process. However, the existing sewage biochemical treatment process has the following outstanding problems:
(1) unstable low-temperature operation: the biochemical treatment process is the mainstream treatment process of sewage at home and abroad at present. However, no matter the sewage treatment plant is constructed by adopting an activated sludge treatment process or a biomembrane process and Membrane Bioreactor (MBR) process, in some severe cold areas or due to low temperature in winter, when the temperature of water is lower than 15 ℃, the activity of nitrobacteria is strongly inhibited, the nitrification effect is poor, and most of the ammonia nitrogen in the effluent is more than 15mg/L, and some of the ammonia nitrogen in the effluent is even more than 20 mg/L. Because the nitrification effect is poor, the denitrification effect is not guaranteed, and the total nitrogen of effluent is mostly more than 20 mg/L. Therefore, the effluent of the northern sewage treatment plant in winter is not guaranteed to reach the quasi IV-class water quality of the environmental quality standard for surface water (GB3838-2002), namely the first-class B standard of the pollutant emission standard for urban sewage treatment plants (GB 18918-2002).
(2) The occupied area is large: when the activated sludge treatment process, the biofilm process and the Membrane Bioreactor (MBR) process are adopted to construct a sewage treatment plant to treat sewage, the retention time of the sewage mostly reaches over 17 hours, the number of structures is large, the land area of a million-ton sewage treatment plant is mostly 12-15 mu, and a large amount of land resources are occupied.
(3) The effluent quality is not high: when sewage is treated by a sewage treatment plant constructed by an activated sludge treatment process, a biofilm process treatment process, a Membrane Bioreactor (MBR) and other processes, the effluent quality is mostly the first-class A standard of pollutant emission standard of urban sewage treatment plant (GB 18918 plus 2002) or the quasi-IV class (mainly total nitrogen can only reach 5-10 mg/L) of surface water environment quality standard (GB3838-2002), the water quality is poor, most of the effluent cannot meet the water resource utilization requirement, and meanwhile, a large amount of nitrogen is discharged to cause the nitrogen exceeding of water bodies of rivers and lakes and water eutrophication, so that the blue algae event is exposed continuously.
(4) The debugging period is long: after a sewage treatment plant is built, microorganisms need to be cultured, aerobic microorganisms are cultured quickly, and anaerobic microorganisms need to be cultured for 2-3 months or even longer, so that the debugging period of the sewage treatment plant is longer.
(5) The difficulty of pipe transportation is high: because microorganisms are sensitive to the pH, salinity, nutrition and the like of sewage, if the water quality fluctuation is large, the management reaction is not timely, a large amount of microorganisms die, the whole biochemical system is rushed, and the time of 2-3 months is needed for re-culture. Therefore, the operation difficulty is large.
(6) Capacity expansion is achieved: due to the rapid economic development of the last forty years, most of the existing sewage treatment plants treat urban centers. When most of sewage is planned and constructed, the social and economic development is not predicted sufficiently, enough extension land is not reserved, and therefore when the current capacity expansion is needed, no construction land is reserved.
(7) The main root cause of water eutrophication is as follows: the eutrophication of the water body is mainly caused by the fact that the nitrogen and phosphorus content in the water body accumulates day by day and continuously and seriously exceeds the standard, and one of the main reasons for the result is the sewage discharge of a municipal sewage treatment plant. At present, according to the discharge standard of pollutants for urban sewage treatment plants, most of ammonia nitrogen in effluent of a sewage treatment plant constructed by an activated sludge process is larger than 1mg/L, most of total nitrogen is larger than 10mg/L, most of total phosphorus is larger than 0.4mg/L, a large amount of nitrogen and phosphorus in the effluent are discharged into a water body, the content of nitrogen and phosphorus accumulates day by month and continuously, eutrophication of the water body is caused, and a large amount of algae is proliferated and water bloom is erupted repeatedly.
(8) Difficulty of sludge dehydration and odor of taste: when the biochemical method is adopted for treatment, the sludge contains a large amount of microbial colonies, the microbial colonies contain a large amount of intercellular water, and the sewage can be dehydrated to the water content of below 60 percent by adopting high-pressure plate-and-frame filter pressing after high-temperature cooking or physicochemical conditioning. In addition, because the sewage contains a large amount of organic matters and anaerobic bacteria, in the process of collecting, dehydrating and transferring the sludge, the organic matters can release a large amount of stink difficult to smell under the action of the anaerobic bacteria, and the production environment of a sewage treatment plant and the living environment around the sewage treatment plant are influenced.
(9) The odor disturbs people: when the biochemical method is adopted for treatment, a large amount of malodorous gas is generated in the anaerobic process and the anoxic process, and in order to eliminate the malodorous gas, more capital needs to be invested to construct a malodorous collecting and treating device.
(10) The carbon source needs to be added: firstly, when the COD concentration of the inlet water is low and the carbon-nitrogen ratio is inconsistent, and secondly, when denitrification is needed to remove the total nitrogen, carbon sources are required to be added.
(11) The construction period is long: when a sewage treatment plant is constructed by adopting a biochemical treatment process, a large number of structures such as an anaerobic pool, an anoxic pool, an aerobic pool, a secondary sedimentation pool and the like need to adopt traditional concrete structures, the engineering progress of the structures is greatly influenced by geological conditions and weather, the structures are difficult to accurately control, and the construction time is long.
Therefore, the effluent quality of the sewage treatment plant is improved, the nitrogen and phosphorus emission of the urban sewage treatment plant is reduced, and the problem that the construction land of the sewage treatment plant is the primary target of municipal sewage treatment at present is solved, and the problem is also an important problem. However, although these classical sewage treatment processes are applied for more than a hundred years, the quality of the effluent cannot meet the index requirements of social and economic development and the quality standard of surface water environment (GB3838-2002) so that there is an urgent need to develop a novel sewage treatment process that has high effluent quality (can meet the requirement of water resource utilization), short sewage retention time, small land area, few structures, fast construction speed, low operation cost, and greatly shortened construction time. In addition, because the country has a very tight grasp on the construction of sewage treatment facilities and the elimination of black and odorous water, a large amount of small polluted water bodies and emergency sewage treatment projects all over the country urgently need to be moved and transported conveniently, the sewage treatment effect is good, the effluent quality is high, and the construction and debugging time is short.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art and adopt the biochemical treatment technique to handle the above defect that exists when sewage, and provide a new portable photoelectric complementary sewage deep purification system, this sewage treatment system combines together coagulating sedimentation and ion catalysis electrolysis denitrogenation to adopt photovoltaic power generation device to supply power with electrical apparatus, not only go out water quality of water height, be convenient for remove, the construction installation time is short, and can the energy saving, green is applicable to very much and pollutes water body treatment and sewage treatment emergency engineering construction needs.
The utility model provides a mobile photoelectric complementary deep sewage purification system, which comprises a container capable of being hoisted, a deep sewage purification system integrated in the container and a photovoltaic power generation device arranged on the surface of the container, wherein the deep sewage purification system comprises a coagulating sedimentation device and an ion catalytic electrolysis denitrification device; the coagulating sedimentation device comprises a pH adjusting tank, a coagulating tank, a coagulation aiding tank, a sedimentation tank and an intermediate water tank, wherein a water outlet of the pH adjusting tank is connected with a water inlet of the coagulating tank, a water outlet of the coagulating tank is connected with a water inlet of the coagulation aiding tank, a water outlet of the coagulation aiding tank is connected with a water inlet of the sedimentation tank, and a water outlet of the sedimentation tank is connected with a water inlet of the intermediate water tank; the ion catalysis electrolysis denitrification device comprises an electrolysis machine, a degassing tank and an ion catalyst feeding device, wherein a water inlet of the electrolysis machine is connected with a water outlet of a middle water tank of the coagulation sedimentation device, a pipeline mixer is arranged on a connecting pipeline of the electrolysis machine and the middle water tank, an outlet of the ion catalyst feeding device is connected with an inlet of the pipeline mixer, a water outlet of the electrolysis machine is connected with a water inlet of the degassing tank, one path of the water outlet of the degassing tank is connected with a clear water drain pipe, and the other path of the water outlet of the degassing tank is connected with an inlet of the pipeline mixer through a circulating pump; photovoltaic power generation device includes a plurality of solar panel, collection flow box, dc-to-ac converter and the two-way ammeter of photovoltaic power generation, the collection flow box is used for converging to the produced electric energy of solar panel, the output of collection flow box is connected with electrical apparatus with sewage deep purification system at least via the dc-to-ac converter all the way and provides the power to electrical apparatus, and another way is connected with the electric wire netting via inverter and the two-way ammeter of photovoltaic power generation.
Further, when the electric quantity generated by the photovoltaic power generation device is more than the electric quantity used by the sewage deep purification system, the redundant electric quantity of the photovoltaic power generation device supplies power to the power grid through the inverter and the photovoltaic power generation bidirectional electric meter; when the electric quantity generated by the photovoltaic power generation device is less than the electric quantity used by the sewage deep purification system, the electric grid supplies power to the electric appliances of the sewage deep purification system through the photovoltaic power generation bidirectional ammeter and the inverter.
Furthermore, a water inlet of the degassing tank is connected with a water distributor positioned at the bottom of the degassing tank, a slag scraper and a bubble scum collecting tank are further arranged at the top of the degassing tank, and the slag scraper is used for scraping bubbles on the surface of the liquid in the degassing tank into the bubble collecting tank.
Further, the water outlet of the degassing tank is arranged at a position 300-1000 mm away from the top of the degassing tank, and an aeration tank is arranged on a pipeline connecting the water outlet of the degassing tank and a clear water drain pipe.
Further, ion catalysis electrolysis denitrification facility still includes electrode belt cleaning device, electrode belt cleaning device includes pickling solution basin and pickling solution delivery pump, the export of pickling solution basin is connected and the pickling solution delivery pump setting is on connecting the pipeline between them with the delivery port of electrolysis machine, the import of pickling solution basin is connected with the water inlet of electrolysis machine.
Further, the integrated sewage deep purification system in the container still includes sludge treatment equipment, sludge treatment equipment includes sludge concentration tank, physics and chemistry pond and hydroextractor, sludge concentration tank's import respectively with in the coagulating sedimentation device sludge outlet and the ion catalysis electrolysis denitrification facility of sedimentation tank bottom sludge outlet and degasser bottom sludge outlet connect, sludge concentration tank's sludge outlet and physics and chemistry pond access connection are taked care of, sludge concentration tank's sewage outlet and coagulating sedimentation device in the water inlet of pH equalizing basin be connected, physics and chemistry pond's export and hydroextractor access connection, the sewage outlet of hydroextractor and coagulating sedimentation device in the water inlet of pH equalizing basin be connected, the clod export and the external world of hydroextractor are connected.
Further, the pH adjusting tank, the coagulating tank and the coagulation aiding tank are respectively provided with a pH adjusting agent adding device, a coagulant adding device and a coagulant aiding adding device; the pH regulator adding device comprises a pH regulator storage tank and a dosing pump, the coagulant adding device comprises a coagulant storage tank and a dosing pump, and the coagulant aid adding device comprises a coagulant aid storage tank and a dosing pump.
Furthermore, one or more of on-line monitoring instruments for COD, ammonia nitrogen, total nitrogen and total phosphorus are installed at a water inlet of the mobile photoelectric complementary sewage deep purification system, and one or more of on-line monitoring instruments for residual chlorine, COD, ammonia nitrogen, total nitrogen and total phosphorus are installed at a water outlet.
Compared with the prior art, the utility model, following obvious advantage has:
(1) the utility model provides a complementary sewage deep purification system of portable photoelectricity can be according to sewage treatment's needs nimble removal, is fit for the sewage treatment of 5 ~ 1000 tons/day scale, goes out water quality of water and satisfies ifThe following indexes are as follows: COD Cr ≤40mg/L、BOD 5 The water quality control method has the advantages that the water quality control method is less than or equal to 10mg/L, ammonia nitrogen is less than or equal to 2mg/L, total nitrogen is less than or equal to 3mg/L, total phosphorus is less than or equal to 0.4mg/L, SS and less than or equal to 10mg/L, chromaticity is less than or equal to 5, the number of faecal coliform groups is less than or equal to 3/L, and the pH is 6-9, so that the index requirements corresponding to water V in the environmental quality Standard of surface Water (GB3838-2002) can be met, and the problems of treatment equipment and technology of the existing small micro water bodies and small sewage treatment stations are solved;
(2) adopt the utility model provides a during complementary sewage deep purification system of portable photoelectricity handles sewage, it is less influenced by the concentration change of ammonia nitrogen, total nitrogen, COD, total phosphorus, and the main pollutant of play water can reach the index requirement that earth's surface V water corresponds.
(3) The utility model provides a complementary sewage deep purification system of portable photoelectricity adopts the complementary electricity generation power supply of photoelectricity, and the ether solar energy is leading, and when equipment operation, the energy consumption is low, and unit running cost is half at least than prior art is low.
(4) The utility model provides a complementary sewage deep purification system of portable photoelectricity designs, suitably reserves the power consumption load, and load such as COD in the water, BOD, total nitrogen or sewage flow changes when big, through adjusting the power consumption, just can satisfy the load and strike, guarantees quality of water, and anti load impact force is strong.
(5) At present, the biological method is a mainstream process for sewage treatment. However, the biological method is slow in debugging speed, and a debugging period is as short as several weeks and as long as several months. In addition, the biological method has many disadvantages such as controlling the dosage, air quantity and temperature. And the utility model provides a complementary sewage deep purification system of portable photoelectricity handles sewage, as long as control pH value, coagulant and coagulant aid dosage, electrolysis electric quantity just can control out water quality of water, and the debugging time just can be qualified as long as several hours, and the debugging on the same day, and is up to standard on the same day. In addition, the switch is flexible, and is opened when sewage needs to be treated, and is closed when sewage does not need to be treated. Meanwhile, the electrolytic voltage and current can be adjusted at any time according to the amount of pollutants to be removed, the opening is large and the opening is small flexibly, the pollutants to be removed are large, the pollutants to be removed are small, the pollutants are not required to be closed, the cost is saved, the reaction speed is high, the operation is simple, and the automatic control is easy.
(6) The utility model provides a complementary sewage deep purification system of portable photoelectricity takes up an area of about 15 ~ 30 square meters, and area is only one fifth of MBR technology or one fifth of biochemical method.
(7) The utility model provides a processing method that complementary sewage deep purification system of portable photoelectricity corresponds only needs "thoughtlessly congeal + catalytic electrolysis" twice process on adopting photovoltaic power generation device self electricity generation with the basis of using electrical apparatus power supply to sewage deep purification system, and production technology flow is short, only needs control pH value, coagulant and coagulant aid to add medicine volume, electrolysis electric quantity during operation control, and control factor is few, easy and simple to handle.
(8) Different from the biochemical method, the biochemical method handles sewage, owing to have anaerobism and oxygen deficiency process, the debugging period reaches several months, and the utility model provides a portable complementary sewage deep purification system of photoelectricity only needs to coagulate and catalytic electrolysis denitrogenation twice process on adopting photovoltaic power generation device self electricity generation with the basis of the power supply with electrical apparatus to sewage deep purification system, and the debugging time qualified from the start to the play water only needs several hours, and the start is qualified on the same day, and is qualified on the same day. Therefore, the debug period is short.
(9) The utility model provides a complementary sewage deep purification system of portable photoelectricity is modular system, has produced the debugging in the workshop and has finished, when needing, only needs to harden on-the-spot place, transfers and transports and just can accomplish the installation and debugging in the on-the-spot a week. Therefore, the construction speed is high.
(10) Adopt the utility model provides a portable complementary sewage deep purification system of photoelectricity when carrying out the upgrading transformation to current sewage treatment station, utilize current land can, need not newly-increased land.
(11) Adopt the utility model provides a complementary sewage deep purification system of portable photoelectricity handles the sewage in-process, produces oxygen, makes the regeneration water dissolved oxygen after handling increase substantially, and dissolved oxygen content can reach more than 5mg L.
Drawings
Fig. 1 is a specific schematic diagram of a mobile photoelectric complementary sewage deep purification system provided by the present invention;
FIG. 2 is a specific schematic view of the mobile photoelectric complementary sewage deep purification system provided by the present invention;
fig. 3 is a specific schematic view of a coagulating sedimentation device provided by the present invention;
FIG. 4 is a schematic view of an ion-catalyzed electrolytic denitrification apparatus according to the present invention;
FIG. 5 is a schematic view of a sludge treatment apparatus according to the present invention;
fig. 6 is a specific schematic diagram of the photovoltaic power generation apparatus provided by the present invention.
Description of reference numerals: 1-container, 2-deep sewage purification system integrated in the container, 100-coagulating sedimentation device, 200-ion catalytic electrolytic denitrification device, 300-sludge treatment device, 400-photovoltaic power generation device, 110-pH adjusting tank, 120-coagulating tank, 130-coagulation aiding tank, 140-precipitating tank, 141-sludge outlet, 144-pump, 150-intermediate water tank, 210-electrolysis machine, 220-DC power supply, 230-degassing tank, 231-water inlet, 232-water distributor, 235-circulating pump, 240-electrode cleaning device, 241-pickling solution storage tank, 242-pickling solution delivery pump, 250-ion catalyst feeding device, 251-chloride ion catalyst solution storage tank, 252-delivery pump, 253-pipeline mixer, 310-a sludge concentration tank, 311-a sewage outlet, 312-a sludge outlet, 320-a physicochemical conditioning tank, 330-a dehydrator, 410-a solar panel, 420-a combiner box, 430-an inverter and 440-a photovoltaic power generation bidirectional electric meter.
Detailed Description
The following describes the embodiments of the present invention in detail. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Referring to fig. 1 and 2, the utility model provides a complementary sewage deep purification system of portable photoelectricity includes container 1 that can hoist and mount, the integrated sewage deep purification system 2 in the container and set up in photovoltaic power generation device 400 on container surface, the integrated sewage deep purification system 2 in the container includes coagulating sedimentation device 100, ion catalysis electrolysis denitrification device 200 and optional sludge treatment device 300.
Referring to fig. 3, the coagulating sedimentation device comprises a pH adjusting tank 110, a coagulating tank 120, a coagulation assisting tank 130, a sedimentation tank 140 and an intermediate water tank 150, wherein a water inlet of the pH adjusting tank 110 is connected with a sewage source, a water outlet of the pH adjusting tank 110 is connected with a water inlet of the coagulating tank 120, a water outlet of the coagulating tank 120 is connected with a water inlet of the coagulation assisting tank 130, a water outlet of the coagulation assisting tank 130 is connected with a water inlet of the sedimentation tank 140, a water outlet of the sedimentation tank 140 is connected with a water inlet of the intermediate water tank 150, a sludge outlet of the sedimentation tank 140 is connected with an inlet of a sludge concentration tank 310 in a sludge treatment device 300, and a water outlet of the intermediate water tank 150 is connected with a water inlet of an electrolytic machine in an ion-catalyzed electrolytic decontamination device 200. Further, it is preferable that a mixer is provided in each of the pH adjusting tank 110, the coagulation tank 120, and the coagulation assisting tank 130. The sludge outlet 141 of the sedimentation tank 140 is connected with the inlet of the sludge concentration tank 310 of the sludge treatment device 300, and a pump 144 is arranged on the connecting pipeline of the sludge outlet 141 and the sludge concentration tank.
Referring to fig. 4, the ion-catalyzed electrolytic denitrification apparatus 200 comprises an electrolyzer 210, a dc power supply 220, a degassing tank 230 and an ion catalyst adding apparatus 250, wherein a water inlet of the electrolyzer 210 is connected with a water outlet of the intermediate water tank 150 of the coagulation sedimentation apparatus 100, and a water outlet of the electrolyzer 210 is connected with a water inlet of the degassing tank 230; the water outlet of the intermediate water tank 150 is connected with the water inlet of the electrolysis machine 210, and a pipeline mixer 253 for mixing sewage and a chloride ion catalyst is also arranged on a pipeline connected with the water outlet of the intermediate water tank 150 and the water inlet of the electrolysis machine 210; the ion catalyst feeding device 250 is used for feeding a chloride ion catalyst (sodium hypochlorite or sodium chloride) to supplement chloride ions used as the catalyst, and an outlet of the ion catalyst feeding device 250 is connected with a water inlet pipe of the electrolysis machine 210 and is arranged in front of a pipeline mixer 253 of the water inlet pipe of the electrolysis machine 210; one path of the water outlet of the degassing tank 230 is connected with a clean water drain pipe and the other path is connected with the inlet of a pipeline mixer 253 through a circulating pump 235, and further connected with the water inlet pipe of the electrolysis machine 210.
In a preferred embodiment, referring to fig. 4, the water outlet of the degassing tank 230 is arranged 300-1000 mm away from the top of the degassing tank 230, and an aeration tank (not shown) is arranged on a pipeline connecting the water outlet of the degassing tank 230 and a clear water drain pipe and is used for aeration removal of sodium hypochlorite in a water body.
In a preferred embodiment, referring to fig. 4, the water inlet 231 of the degassing tank 230 of the ion catalytic electrolytic denitrification apparatus 200 is connected with a water distributor 232 at the bottom of the degassing tank 230, one path of the water outlet at the upper part of the degassing tank 230 is connected with the water inlet of the aeration tank, the other path is connected with a pipeline mixer 253 via a circulating pump 235, and the top of the degassing tank 230 is further provided with a scum scraper and a bubble scum collecting tank, wherein the scum scraper is used for scraping bubbles on the liquid surface in the degassing tank into the bubble collecting tank.
In a preferred embodiment, referring to fig. 4, the ion catalyst adding apparatus 250 comprises a storage tank 251 for chloride ion catalyst solution and a delivery pump 252, wherein a source of chloride ions (sodium hypochlorite or sodium chloride) in the storage tank 251 for chloride ion catalyst solution is connected to an inlet of a pipeline mixer 253 by the delivery pump 252 to supplement the chloride ions for the catalyst.
In a preferred embodiment, referring to FIG. 4, the ion-catalyzed electrolytic denitrification apparatus 200 further comprises an electrode cleaning apparatus 240, wherein the electrode cleaning apparatus 240 comprises a pickling solution storage tank 241 and a pickling solution delivery pump 242, and the pickling solution storage tank 241 is connected to the electrolysis machine 210 through the pickling solution delivery pump 242 to deliver the pickling solution in the pickling solution storage tank 241 to the electrolysis machine 210 for cleaning the electrodes during shutdown.
In a preferred embodiment, referring to fig. 4, the ion catalytic electrolytic denitrification apparatus 200 further comprises an electrode cleaning apparatus 240, wherein the electrode cleaning apparatus 240 comprises a pickling solution storage tank 241 and a pickling solution delivery pump 242, the outlet of the pickling solution storage tank 241 is connected with the water outlet of the electrolysis machine 210 through the pickling solution delivery pump 242, the inlet of the pickling solution storage tank 241 is connected with the water inlet of the electrolysis machine 210, when the electrodes of the ion catalytic electrolytic denitrification apparatus 200 are polluted and scaled, and the electrolysis efficiency is reduced, the operation of the ion catalytic electrolytic denitrification apparatus 200 is stopped, and the pickling solution delivery pump 242 is started to introduce the pickling solution in the pickling solution storage tank 241 into the electrolysis machine 210 to remove the scale deposited on the electrode surfaces. Wherein, the acid washing solution can adopt 2 to 3 percent hydrochloric acid solution or 4 to 5 percent citric acid solution.
In a preferred embodiment, referring to fig. 5, the sludge treatment device 300 comprises a sludge concentration tank 310, a physicochemical conditioning tank 320 and a dehydrator 330, wherein the inlet of the sludge concentration tank 310 is respectively connected with the sludge outlet 141 at the bottom of the sedimentation tank 140 in the coagulation sedimentation device 100 and the sludge outlet at the bottom of the degassing tank 230 in the ion catalytic electrolytic denitrification device 200, the sludge outlet 312 of the sludge concentration tank 310 is connected with the inlet of the physicochemical conditioning tank 320, and the sewage outlet 311 of the sludge concentration tank 310 is connected with the water inlet of the pH adjusting tank 110 in the coagulation sedimentation device 100; the export of physics and chemistry conditioning pond 320 and the access connection of hydroextractor 330, the sewage export of hydroextractor 330 is connected with the water inlet of pH equalizing basin 110 in coagulating sedimentation device 100, the mud piece that hydroextractor 330 produced is collected in the mud collects the terrace, and the mud piece burns the processing.
Referring to fig. 6, the photovoltaic power generation apparatus 400 includes a plurality of solar panels 410, a combiner box 420, an inverter 430, and a photovoltaic power generation bidirectional electric meter 440, the combiner box 420 is used for combining the electric energy generated by the solar panels 410, one path of the output end of the combiner box 420 is connected to at least an electrical appliance of the deep sewage purification system via the inverter 430 to provide power to the electrical appliance, and the other path is connected to the power grid via the inverter and the photovoltaic power generation bidirectional electric meter 440. The solar panel 410 may be a single-crystal silicon panel or a polycrystalline silicon panel. The electric appliances of the sewage deep purification system comprise an electrolytic machine and other electric appliances (for example, the stirring paddles of the pH adjusting tank 110, the coagulation tank 120 and the coagulation-assistant tank 130 in the mixing and settling device 100, and various pumps arranged on pipelines, etc.). When the electric quantity generated by the photovoltaic power generation device 400 is more than the electric quantity used by the sewage deep purification system 200, the surplus electric quantity of the photovoltaic power generation device 400 supplies power to the power grid through the inverter and the photovoltaic power generation bidirectional electric meter 440; when the electric quantity generated by the photovoltaic power generation device 400 is less than the electric quantity used by the deep sewage purification system 200, the electric grid supplies power to the electric appliances of the deep sewage purification system 200 through the photovoltaic power generation bidirectional electric meter 440 and the inverter 430.
In a preferred embodiment, one or more of online monitors for COD, ammonia nitrogen, total nitrogen and total phosphorus are installed at the water inlet of the mobile photoelectric complementary sewage deep purification system, and one or more of online monitors for residual chlorine, COD, ammonia nitrogen, total nitrogen and total phosphorus are installed at the water outlet.
Adopt the utility model provides a when complementary sewage deep purification system of portable photoelectricity handles sewage, specifically include following step:
s1, coagulating sedimentation: introducing sewage to be treated into a pH adjusting tank to adjust the pH value of the sewage to 8-9, introducing the sewage into a coagulation tank, adding a coagulant into the coagulation tank, uniformly mixing the coagulant with the coagulant, introducing the coagulant into a coagulation assisting tank, adding polyacrylamide into the coagulation assisting tank, uniformly mixing the coagulant with the polyacrylamide, introducing the coagulant into a settling tank, standing and settling, and introducing a supernatant obtained by standing and settling into an intermediate water tank;
s2, ion catalysis, electrolysis and denitrification: uniformly mixing effluent of an intermediate water tank and a chloride ion catalyst from an ion catalyst feeding device in a pipeline mixer, introducing the mixture into an electrolysis machine for ion catalytic electrolytic denitrification, wherein the dosage of the chloride ion catalyst is based on the control of the concentration of chloride ions in sewage introduced into the electrolysis machine to be 100-200 mg/L, introducing the sewage obtained after the ion catalytic electrolytic denitrification into a degassing tank for gas-liquid separation, pumping supernatant obtained by the gas-liquid separation into the electrolysis machine again through a circulating pump for further ion catalytic electrolytic denitrification to ammonia nitrogen, total nitrogen and COD Cr 、BOD 5 Discharging into a degassing tank after being qualified, degassing and discharging.
Further, in step S1, the coagulant is used in an amount of 80-150 g/m 3 。
Further, in step S1, the coagulant aid is used in an amount of 0.1 to 1.5g/m 3 。
Further, in step S1, the chloride ion catalyst is sodium hypochlorite and/or sodium chloride.
Further, in step S2, the operating voltage of the ion-catalyzed electrolytic denitrification is 5-100V and the current is 10-2000A.
Further, in step S1, the coagulating sedimentation is mainly used for removing a large amount of SS and COD in the sewage Cr 、BOD 5 Total phosphorus, petroleum, animal and vegetable oil and various heavy metal ions are coagulated and precipitated, so that SS is removed by more than 95 percent and COD is obtained Cr 、BOD 5 70-90% of the total phosphorus is removed, more than 95% of the total phosphorus is removed, and more than 95% of various heavy metal ions are removed.
Further, in step S2, the ion-catalyzed electrolytic denitrification is mainly used for removing ammonia nitrogen and total nitrogen, and removing residual SS and COD in the sewage after the coagulating sedimentation Cr 、BOD 5 And total phosphorus, and the effluent after ion catalytic electrolytic denitrification meets the following indexes: COD Cr ≤40mg/L、BOD 5 Less than or equal to 10mg/L, ammonia nitrogen less than or equal to 2mg/L, total nitrogen less than or equal to 3mg/L, total phosphorus less than or equal to 0.4mg/L, SS less than or equal to 10mg/L, chromaticity less than or equal to 5, and faecal coliform colony number less than or equal to 3/L.
Further, the sewage treatment method further comprises a step S3 of conveying sludge obtained by coagulating sedimentation and ion catalytic electrolysis denitrification into a sludge concentration tank of the sludge treatment device respectively for gravity concentration to obtain supernatant at the upper part and concentrated sludge at the bottom part; returning the supernatant to a pH adjusting tank of the coagulating sedimentation device for further treatment, and conveying the concentrated sludge to a conditioning tank; and adding a physical and chemical conditioner into the physical and chemical conditioning pool for physical and chemical conditioning, wherein the physical and chemical conditioner is at least one selected from lime, ferric trichloride and polyaluminium chloride, conveying the sludge subjected to physical and chemical conditioning to a dewatering machine for dewatering, returning the sewage obtained by dewatering to a pH adjusting pool of a coagulating sedimentation device for further treatment, and discharging sludge blocks obtained by dewatering.
In one embodiment, the wastewater treatment method comprises the following steps:
s1, coagulating sedimentation: introducing the sewage to be treated into a pH adjusting tank, starting a stirrer, and stirring according to the proportion of 20-100 g/m 3 Adding alkaline substance (selected from alkaline substance)At least one of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate), stirring and mixing for 1-2 minutes, adjusting the pH of the sewage to be treated to 8-9, and enabling the sewage to flow into a coagulation tank from a pH adjusting tank by utilizing a liquid level difference according to the ratio of 80-150 g/m 3 Adding a coagulant (the coagulant is at least one selected from ferric trichloride, polyferric sulfate, ferric sulfate, aluminum sulfate and polyaluminium chloride (PAC)) in a using amount, stirring and mixing for 2-5 minutes, and then making the sewage flow into a coagulation aid tank from a coagulation tank by utilizing a liquid level difference according to the proportion of 1-1.5 g/m 3 Adding Polyacrylamide (PAM) serving as a coagulant aid, stirring and mixing for 1-2 minutes, then allowing sewage to flow into a sedimentation tank from the coagulation aid tank by utilizing a liquid level difference for sedimentation for 15-60 minutes, allowing supernatant of the sedimentation tank to flow into an intermediate water tank, and pumping sludge at the bottom of the sedimentation tank into a sludge concentration tank; the coagulating sedimentation is mainly used for removing a large amount of SS and COD in sewage Cr 、BOD 5 Total phosphorus, petroleum, animal and vegetable oil and various heavy metal ions are treated by coagulating sedimentation, SS is removed by more than 95 percent, COD Cr 、BOD 5 More than 70-90% of the total phosphorus is removed, more than 95% of the total phosphorus is removed, and more than 95% of various heavy metal ions are removed;
s2, ion catalysis, electrolysis and denitrification: the effluent of the middle water tank is treated according to the volume ratio of 300-800 mL/m 3 Adding 10-12% sodium hypochlorite or 80-200 g/m 3 Sodium chloride is added to the using amount to serve as a chloride ion catalyst, the sodium chloride is pumped into an electrolysis machine after uniform mixing to perform ion catalytic electrolysis denitrification, the working voltage of the ion catalytic electrolysis denitrification is 5-100V, the current of the ion catalytic electrolysis denitrification is 10-2000A, the electrolyzed effluent enters a degassing tank to perform gas-liquid separation, bubbles on the upper portion are scraped into a bubble collecting tank through a residue scraping machine, and clear liquid is pumped into the electrolysis machine again through a circulating pump to be further electrolyzed until ammonia nitrogen, total nitrogen and COD (chemical oxygen demand) are further electrolyzed Cr 、BOD 5 Discharging the qualified mixture into an aeration tank, and discharging the mixture into a water outlet after removing residual sodium hypochlorite through aeration of the aeration tank; the ion catalytic electrolytic denitrification is mainly used for removing residual ammonia nitrogen and total nitrogen in the sewage after the coagulating sedimentation treatment and simultaneously assisting in removing SS and COD in the sewage Cr 、BOD 5 And total phosphorus; the effluent after the ion catalysis electrolytic denitrification meets the following indexes: COD Cr ≤40mg/L、BOD 5 The content of ammonia nitrogen is less than or equal to 10mg/L, the content of ammonia nitrogen is less than or equal to 2mg/L, the content of total nitrogen is less than or equal to 3mg/L, the content of total phosphorus is less than or equal to 0.4mg/L, SS and less than or equal to 10mg/L, the chroma is less than or equal to 5, and the number of faecal coliform groups is less than or equal to 3/L, wherein the quality of the effluent aerated in an aeration tank meets the index requirements corresponding to surface water environmental quality standard (GB3838-2002) V water;
s3, sludge treatment: respectively conveying sludge obtained by coagulating sedimentation and ion catalytic electrolysis denitrification into a sludge concentration tank for gravity concentration to obtain supernatant on the upper part and concentrated sludge on the bottom; conveying the supernatant to a pH adjusting tank of a coagulating sedimentation device, and conveying the concentrated sludge to a conditioning tank; adding a physical and chemical conditioner into the physical and chemical conditioning pool, conveying the mixture into a dewatering machine for dewatering, returning sewage obtained by dewatering into a pH adjusting pool of a coagulating sedimentation device for further treatment, collecting sludge blocks obtained by dewatering into a sludge collecting terrace, burning the sludge blocks, and selecting at least one of lime, ferric trichloride and polyaluminium chloride as the physical and chemical conditioner.
The coagulant is selected from at least one of ferric trichloride, polyferric sulfate, ferric sulfate, aluminum sulfate and polyaluminium chloride, and when the coagulant is used, a 10-15% solution is preferably prepared and used in a solution form.
The present invention will be described in detail below by way of examples.
Example 1 Mobile photoelectric complementary deep purification System for wastewater with daily throughput of 50 ton/day
Referring to fig. 1 and 2, the mobile photoelectric complementary deep sewage purification system for 50 tons/day provided by the present embodiment includes a container 1 capable of being hoisted, a deep sewage purification system 2 integrated in the container, and a photovoltaic power generation device 400 disposed on the surface of the container, wherein the container 1 has a geometric size of 2300 × 5900 × 2780(mm), and the deep sewage purification system 2 integrated in the container includes a coagulation sedimentation device 100 and an ion-catalyzed electrolytic denitrification device 200.
Referring to fig. 3, the coagulating sedimentation device 100 comprises a pH adjusting tank 110, a coagulating tank 120, a coagulation assisting tank 130, a sedimentation tank 140 and an intermediate water tank 150, wherein the geometric size of the pH adjusting tank 110 is a square barrel or a round barrel with the volume of 50 liters, the water inlet of the pH adjusting tank 110 is connected with a sewage source, and the water outlet of the pH adjusting tank 110 is connected with the water inlet of the coagulating tank 120; the geometric dimension of the coagulation basin 120 is 200 liters of square barrel or round barrel, and the water outlet of the coagulation basin 120 is connected with the water inlet of the coagulation aiding basin 130; the geometric dimension of the coagulation aiding tank 130 is a square barrel or a round barrel with the volume of 50 liters, and the water outlet of the coagulation aiding tank 130 is connected with the water inlet of the sedimentation tank 140; the physical dimension of the sedimentation tank 140 is a 2800 liter square barrel or round barrel, the water outlet of the sedimentation tank 140 is connected with the water inlet of the middle water tank 150, and the bottom of the sedimentation tank 140 is also provided with a sludge discharge port; the geometric dimension of the middle water tank 150 is a square barrel or a round barrel with 1000 liters, and the water outlet of the middle water tank 150 is connected with an ion catalytic electrolytic denitrification device 200. Stirrers are arranged in the pH adjusting tank 110, the coagulation tank 120 and the coagulation aiding tank 130.
Referring to fig. 4, the ion-catalyzed electrolytic denitrification apparatus 200 includes an electrolyzer 210, a dc power supply 220, a degassing tank 230, an electrode cleaning apparatus 240, and an ion catalyst feeding apparatus 250; the electrolyzer 210 is a round tube with a geometric dimension of 315 × 2500(mm), and an electrode group is arranged in the tube; the water inlet of the electrolysis machine 210 is connected with the water outlet of the middle water pool 150 of the coagulating sedimentation device 100, and the water outlet of the electrolysis machine 210 is connected with the water inlet of the degassing tank 230; the geometrical size of the degassing tank 230 is 1200 x 2300(mm) round barrel, a water outlet 400(mm) away from the top of the round barrel is connected with an aeration tank through a phi 100 pipeline, and a water outlet pipe of the degassing tank 230 is also provided with a circulating pump 235 connected with a water inlet pipe of the electrolysis machine 210. The electrode cleaning device 240 comprises a pickling solution storage tank 241 and a pickling solution delivery pump 242, wherein the outlet of the pickling solution storage tank 241 is connected with the water outlet of the electrolysis machine 210, the pickling solution delivery pump 242 is arranged on the connecting pipeline of the pickling solution storage tank 241 and the electrolysis machine 210, and the inlet of the pickling solution storage tank 241 is connected with the water inlet of the electrolysis machine 210. Wherein, the acid washing solution adopts 2 to 3 percent hydrochloric acid solution or 4 to 5 percent citric acid solution. The ion catalyst adding device 250 comprises a chloride ion catalyst solution storage tank 251 and a delivery pump 252, wherein the outlet of the chloride ion catalyst solution storage tank 251 is connected with the inlet of a pipeline mixer 253 under the action of the delivery pump 252.
Referring to fig. 6, the photovoltaic power generation apparatus 400 includes a plurality of solar panels 410, a combiner box 420, an inverter 430, and a photovoltaic power generation bidirectional electric meter 440, the combiner box 420 is used for combining the electric energy generated by the solar panels 410, one path of the output end of the combiner box 420 is connected to at least an electrical appliance of the deep sewage purification system via the inverter 430 to provide power to the electrical appliance, and the other path is connected to the power grid via the inverter and the photovoltaic power generation bidirectional electric meter 440. The solar panel 410 is a single crystal silicon panel. The electric appliances of the sewage deep purification system comprise an electrolysis machine and other electric appliances (various stirrers, pumps and the like) needing electricity. When the electric quantity generated by the photovoltaic power generation device 400 is more than the electric quantity used by the sewage deep purification system 200, the surplus electric quantity of the photovoltaic power generation device 400 supplies power to the power grid through the inverter and the photovoltaic power generation bidirectional electric meter 440; when the electric quantity generated by the photovoltaic power generation device 400 is less than the electric quantity used by the deep sewage purification system 200, the electric grid supplies power to the electric appliances of the deep sewage purification system 200 through the photovoltaic power generation bidirectional electric meter 440 and the inverter 430.
The measured water quality of the sewage to be treated is shown in the table 1.
TABLE 1
Serial number Item Unit of Measured value Serial number Item Unit Measured value
1 COD Cr mg/L 200 5 Ammonia nitrogen mg/L 55
2 SS mg/L 170 6 Total nitrogen mg/L 63
3 Total phosphorus mg/L 7.5 7 pH value - 7.3
4 BOD 5 mg/L 85 8 Chloride ion mg/L 65
This embodiment adopts the complementary sewage deep purification system of portable photoelectricity of above certain 50 tons/day to handle the sewage that awaits treatment in the pair of 1 and adopts the photovoltaic power generation device who sets up in the container surface to the power supply with electrical apparatus of sewage deep purification system at sewage treatment's in-process, and concrete step includes:
s1, coagulating sedimentation: quantitatively pumping the sewage to be treated into a pH adjusting tank 110, starting a stirrer, pumping 10% sodium hydroxide solution, stirring and mixing for 2 minutes, adjusting the pH of the sewage to be treated to 8.5, and making the sewage flow into a coagulation tank 120 from the pH adjusting tank 110 by using a liquid level difference according to the volume ratio of 1000mL/m 3 Pumping 10% PAC solution, stirring and mixing for 5 min, and making sewage flow into coagulation aiding tank 130 from coagulation tank 120 by using liquid level difference according to 300mL/m 3 Pumping 1.0 per mill of PAM solution, stirring and mixing for 2 minutes, making the sewage flow from the coagulation aiding tank 130 into the sedimentation tank 140 by using the liquid level difference for sedimentation for 60 minutes, and making the supernatant of the sedimentation tank 140 flow into the intermediate water tank 150 by using the liquid level difference.
The coagulating sedimentation is mainly used for removing a large amount of SS, COD and BOD in sewage 5 Total phosphorus and various heavy metal ions are removed by over 95 percent of SS, COD and BOD after coagulating sedimentation treatment 5 More than 80-90% of the total phosphorus is removed, more than 95% of the total phosphorus is removed, and more than 95% of various heavy metal ions are removed.
S2, ion catalysis, electrolysis and denitrification: starting a lift pump, pumping the effluent of the intermediate water tank 150 into a pipeline mixer 253, wherein the concentration of chloride ions in the effluent of the intermediate water tank 150 is 65mg/L, and because the concentration of the chloride ions in the water body is lower than 100mg/L, starting a delivery pump 252 in an ion catalyst feeding device 250, adding 12% of sodium hypochlorite into the pipeline mixer 253 to improve the concentration of the chloride ions in the sewage to 120mg/L, uniformly mixing the sewage and the chloride ion catalyst in the pipeline mixer 253, pumping the mixture into an electrolytic machine 210 for ion catalysis electrolysis denitrification, wherein the working voltage of the electrolytic machine is 55V, the current of the electrolytic machine is 260A, and the electrolyzed clean water enters into a stripping machine to be strippedGas-liquid separation is carried out in the gas tank 230, bubbles at the upper part are scraped into a bubble collecting tank through a slag scraper, clear liquid at the lower part is pumped into the electrolytic machine 210 again through the circulating pump 235 for further electrolytic purification until ammonia nitrogen, total nitrogen, COD and BOD are qualified, then the clear liquid is discharged into the aeration tank for aeration, and the clear liquid is discharged into a natural water body after the residual sodium hypochlorite is removed. The ion catalytic electrolytic denitrification is mainly used for removing ammonia nitrogen and total nitrogen, and simultaneously removing residual SS and COD in sewage after coagulating sedimentation Cr 、BOD 5 And total phosphorus, the water quality of the effluent after the ion catalysis, electrolysis and denitrification is shown in the table 2, and the following indexes are specifically met: COD Cr ≤40mg/L、BOD 5 Less than or equal to 10mg/L, ammonia nitrogen less than or equal to 1.5mg/L, total nitrogen less than or equal to 3mg/L, total phosphorus less than or equal to 0.2mg/L, SS less than or equal to 8mg/L, chromaticity less than 5, and faecal coliform colony number less than 3/L.
TABLE 2
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 40 4 Total nitrogen mg/L 3
2 BOD 5 mg/L 10 5 Total phosphorus mg/L 0.2
3 SS mg/L 8 6 Color intensity Multiple times 2
4 Ammonia nitrogen mg/L 1.5 7 pH value - 7.2
Example 2 Mobile photoelectric complementary deep purification System for wastewater with daily throughput of 100 ton/day
Referring to fig. 1 and fig. 2, the mobile photoelectric complementary deep sewage purification system of a certain 100 tons/day provided by the present embodiment includes a container 1 capable of being hoisted, a deep sewage purification system 2 integrated in the container, and a photovoltaic power generation device 400 disposed on the surface of the container, wherein the geometric size of the container 1 is 2300 × 5900 × 2780(mm), and the deep sewage purification system 2 integrated in the container includes a coagulation sedimentation device 100 and an ion-catalyzed electrolytic denitrification device 200.
Referring to fig. 3, the coagulating sedimentation device 100 comprises a pH adjusting tank 110, a coagulating basin 120, a coagulation assisting tank 130, a sedimentation tank 140 and an intermediate water tank 150, wherein the geometric size of the pH adjusting tank 110 is a 100-liter square barrel or round barrel, the water inlet of the pH adjusting tank 110 is connected with a sewage source, and the water outlet of the pH adjusting tank 110 is connected with the water inlet of the coagulating basin 120; the geometric dimension of the coagulation basin 120 is a square barrel or a round barrel with 500 liters, and the water outlet of the coagulation basin 120 is connected with the water inlet of the coagulation aiding basin 130; the geometric dimension of the coagulation aiding tank 130 is a square barrel or a round barrel with the volume of 100 liters, and the water outlet of the coagulation aiding tank 130 is connected with the water inlet of the sedimentation tank 140; the physical dimension of the sedimentation tank 140 is a 4000L square barrel or round barrel, the water outlet of the sedimentation tank 140 is connected with the water inlet of the middle water tank 150, and the bottom of the sedimentation tank 140 is also provided with a sludge discharge port; the geometric dimension of the middle water tank 150 is a square barrel or a round barrel with 1000 liters, and the water outlet of the middle water tank 150 is connected with an ion catalytic electrolytic denitrification device 200. Stirrers are arranged in the pH adjusting tank 110, the coagulation tank 120 and the coagulation aiding tank 130.
Referring to fig. 4, the ion-catalyzed electrolytic denitrification apparatus 200 includes an electrolyzer 210, a dc power supply 220, a degassing tank 230, an electrode cleaning apparatus 240, and an ion catalyst feeding apparatus 250; the electrolyzer 210 is a circular tube with a geometric dimension phi of 315 multiplied by 2500(mm), and an electrode group is arranged in the tube; the water inlet of the electrolysis machine 210 is connected with the water outlet of the middle water pool 150 of the coagulating sedimentation device 100, and the water outlet of the electrolysis machine 210 is connected with the water inlet of the degassing tank 230; the geometrical size of the degassing tank 230 is phi 1200 multiplied by 2800(mm) round barrel, a water outlet 400(mm) away from the top of the round barrel is connected with an aeration tank through a phi 100 pipeline, and a water outlet pipe of the degassing tank 230 is also provided with a circulating pump 235 connected with a water inlet pipe of the electrolysis machine 210. The electrode cleaning device 240 comprises a pickling solution storage tank 241 and a pickling solution delivery pump 242, wherein the outlet of the pickling solution storage tank 241 is connected with the water outlet of the electrolysis machine 210, the pickling solution delivery pump 242 is arranged on the connecting pipeline of the pickling solution storage tank 241 and the electrolysis machine 210, and the inlet of the pickling solution storage tank 241 is connected with the water inlet of the electrolysis machine 210. Wherein, the acid washing solution adopts 2 to 3 percent hydrochloric acid solution or 4 to 5 percent citric acid solution. The ion catalyst adding device 250 comprises a chloride ion catalyst solution storage tank 251 and a delivery pump 252, wherein the outlet of the chloride ion catalyst solution storage tank 251 is connected with the inlet of a pipeline mixer 253 under the action of the delivery pump 252.
Referring to fig. 6, the photovoltaic power generation apparatus 400 includes a plurality of solar panels 410, a combiner box 420, an inverter 430, and a photovoltaic power generation bidirectional electric meter 440, the combiner box 420 is used for combining the electric energy generated by the solar panels 410, one path of the output end of the combiner box 420 is connected to at least an electrical appliance of the deep sewage purification system via the inverter 430 to provide power to the electrical appliance, and the other path is connected to the power grid via the inverter and the photovoltaic power generation bidirectional electric meter 440. The solar panel 410 is a polysilicon panel. The electric appliances of the sewage deep purification system comprise an electrolysis machine and other electric appliances (various stirrers, pumps and the like) needing electricity. When the electric quantity generated by the photovoltaic power generation device 400 is more than the electric quantity used by the sewage deep purification system 200, the surplus electric quantity of the photovoltaic power generation device 400 supplies power to the power grid through the inverter and the photovoltaic power generation bidirectional electric meter 440; when the electric quantity generated by the photovoltaic power generation device 400 is less than the electric quantity used by the deep sewage purification system 200, the electric grid supplies power to the electric appliances of the deep sewage purification system 200 through the photovoltaic power generation bidirectional electric meter 440 and the inverter 430.
The measured indexes of the sewage to be treated are shown in Table 3.
TABLE 3
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 400 5 Ammonia nitrogen mg/L 25
2 SS mg/L 400 6 Color intensity Multiple times 100
3 Total phosphorus NTU 3.5 7 pH value - 6.5
4 BOD 5 mg/L 180 8 Total nitrogen mg/L 30
This embodiment adopts the complementary sewage deep purification system of portable photoelectricity of above certain 50 tons/day to handle the sewage that awaits treatment in the pair of 3 and adopts the photovoltaic power generation device who sets up in the container surface to the power supply with electrical apparatus of sewage deep purification system at sewage treatment's in-process, and concrete step includes:
s1, coagulating sedimentation: quantitatively pumping the sewage to be treated into a pH adjusting tank 110, starting a stirrer, pumping 10% sodium hydroxide solution, stirring and mixing for 2 minutes, adjusting the pH of the sewage to be treated to 8.5, and making the sewage flow into a coagulation tank 120 from the pH adjusting tank 110 by using a liquid level difference according to the volume ratio of 1000mL/m 3 Pumping 10% ferric chloride solution, stirring and mixing for 5 min, and making sewage flow from coagulation tank 120 into coagulation-assistant tank 130 by using liquid level difference according to 500mL/m 3 Pumping 1.0 per mill of PAM solution, stirring and mixing for 2 minutes, making the sewage flow from the coagulation aiding tank 130 into the sedimentation tank 140 by using the liquid level difference for sedimentation for 60 minutes, and making the supernatant of the sedimentation tank 140 flow into the intermediate water tank 150 by using the liquid level difference.
The coagulating sedimentation is mainly used for removing a large amount of SS, COD and BOD in sewage 5 Total phosphorus and various heavy metal ions are removed by over 95 percent of SS, COD and BOD after coagulating sedimentation treatment 5 More than 80-90% of the total phosphorus is removed, more than 95% of the total phosphorus is removed, and more than 95% of various heavy metal ionsIs removed.
S2, ion catalysis, electrolysis and denitrification: starting a lift pump, pumping the effluent of the intermediate water tank 150 into a pipeline mixer 253, wherein the concentration of chloride ions in the effluent of the intermediate water tank 150 is 80mg/L, and because the concentration of the chloride ions in the water body is lower than 100mg/L, starting a delivery pump 252 in an ion catalyst feeding device 250, adding a sodium chloride solution into the pipeline mixer 253 to increase the concentration of the chloride ions in the sewage to 150mg/L, uniformly mixing the sewage and the chloride ion catalyst in the pipeline mixer 253, pumping the mixture into an electrolysis machine 210 for ion catalytic electrolysis denitrification, wherein the working voltage of the electrolysis machine is 50V and the current is 180A, feeding the electrolyzed clean water into a gas-liquid separation tank 230 for gas-liquid separation, scraping bubbles at the upper part into a bubble collecting tank through a residue scraper, pumping the lower clear liquid into the electrolysis machine 210 again through a circulating pump 235 for further electrolysis purification until ammonia nitrogen, total nitrogen, COD and BOD are qualified, and then discharging into an aeration tank for aeration, removing residual sodium hypochlorite and then discharging into natural water. The ion catalytic electrolytic denitrification is mainly used for removing ammonia nitrogen and total nitrogen, and simultaneously removing residual SS and COD in sewage after coagulating sedimentation Cr 、BOD 5 And total phosphorus, the water quality of the effluent after the ion catalysis, electrolysis and denitrification is shown in the table 4, and the following indexes are specifically met: COD Cr ≤40mg/L、BOD 5 Less than or equal to 10mg/L, ammonia nitrogen less than or equal to 1.5mg/L, total nitrogen less than or equal to 3mg/L, total phosphorus less than or equal to 0.2mg/L, SS less than or equal to 8mg/L, chromaticity less than or equal to 2, and fecal coliform number less than 3/L.
TABLE 4
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 24 5 Ammonia nitrogen mg/L 0.5
2 SS mg/L 8 6 Total nitrogen mg/L 2.5
3 Total phosphorus mg/L 0.25 7 Color intensity 2
4 BOD 5 mg/L 7 8 pH value - 7.2
Example 3 Mobile photoelectric complementary deep purification System for wastewater with daily throughput of 200 ton/day
Referring to fig. 1 and fig. 2, the 200 ton/day mobile photoelectric complementary deep sewage purification system provided by this embodiment includes a container 1 capable of being hoisted, a deep sewage purification system 2 integrated in the container, and a photovoltaic power generation device 400 disposed on the surface of the container, wherein the container 1 has a geometric size of 2300 × 8700 × 2780(mm), and the deep sewage purification system 2 integrated in the container includes a coagulation sedimentation device 100 and an ion-catalyzed electrolytic denitrification device 200.
Referring to fig. 3, the coagulating sedimentation device 100 comprises a pH adjusting tank 110, a coagulating basin 120, a coagulation assisting tank 130, a sedimentation tank 140 and an intermediate water tank 150, wherein the geometric size of the pH adjusting tank 110 is a 200-liter square barrel or round barrel, the water inlet of the pH adjusting tank 110 is connected with a sewage source, and the water outlet of the pH adjusting tank 110 is connected with the water inlet of the coagulating basin 120; the geometric dimension of the coagulation basin 120 is a square barrel or a round barrel with 1000 liters, and the water outlet of the coagulation basin 120 is connected with the water inlet of the coagulation aiding basin 130; the geometric dimension of the coagulation aiding tank 130 is a square barrel or a round barrel of 200 liters, and the water outlet of the coagulation aiding tank 130 is connected with the water inlet of the sedimentation tank 140; the physical dimension of the sedimentation tank 140 is 9000 liters of square barrels or round barrels, the water outlet of the sedimentation tank 140 is connected with the water inlet of the middle water tank 150, and the bottom of the sedimentation tank 140 is also provided with a sludge discharge port; the geometric dimension of the middle water tank 150 is a square barrel or a round barrel of 2000 liters, and the water outlet of the middle water tank 150 is connected with an ion catalytic electrolytic denitrification device 200. Stirrers are arranged in the pH adjusting tank 110, the coagulation tank 120 and the coagulation aiding tank 130.
Referring to fig. 4, the ion-catalyzed electrolytic denitrification apparatus 200 includes an electrolyzer 210, a dc power supply 220, a degassing tank 230, an electrode cleaning apparatus 240, and an ion catalyst feeding apparatus 250; the electrolyzer 210 is a circular tube with a geometric dimension phi of 315 multiplied by 2500(mm), and an electrode group is arranged in the tube; the water inlet of the electrolysis machine 210 is connected with the water outlet of the middle water pool 150 of the coagulating sedimentation device 100, and the water outlet of the electrolysis machine 210 is connected with the water inlet of the degassing tank 230; the geometrical size of the degassing tank 230 is phi 1600 multiplied by 2800(mm) round barrel, a water outlet 400(mm) away from the top of the round barrel is connected with an aeration tank through a phi 100 pipeline, and a water outlet pipe of the degassing tank 230 is also provided with a circulating pump 235 connected with a water inlet pipe of the electrolysis machine 210. The electrode cleaning device 240 comprises a pickling solution storage tank 241 and a pickling solution delivery pump 242, wherein the outlet of the pickling solution storage tank 241 is connected with the water outlet of the electrolysis machine 210, the pickling solution delivery pump 242 is arranged on the connecting pipeline of the outlet of the pickling solution storage tank and the electrolysis machine, and the inlet of the pickling solution storage tank is connected with the water inlet of the electrolysis machine. Wherein, the acid washing solution adopts 2 to 3 percent hydrochloric acid solution or 4 to 5 percent citric acid solution. The ion catalyst adding device 250 comprises a chloride ion catalyst solution storage tank 251 and a delivery pump 252, wherein the outlet of the chloride ion catalyst solution storage tank 251 is connected with the inlet of a pipeline mixer 253 under the action of the delivery pump 252.
The water inlet 231 of the degassing tank 230 of the ion catalytic electrolytic denitrification device 200 is connected with the water distributor 232 positioned at the bottom of the degassing tank 230, the water outlet at the upper part of the degassing tank 230 is connected with the water inlet of the aeration tank, and the top of the degassing tank 230 is further provided with a slag scraper and a bubble collecting tank, wherein the slag scraper is used for scraping bubbles on the liquid surface in the degassing tank 230 into the bubble collecting tank.
Referring to fig. 5, the sludge treatment device 300 comprises a sludge pump, a sludge concentration tank 310, a physicochemical conditioning tank 320 and a dehydrator 330, wherein the inlet of the sludge pump is respectively connected with the sludge outlets of the coagulation sedimentation device 100 and the ion catalysis electrolysis denitrification device 200, the outlet of the sludge pump is connected with the inlet of the sludge concentration tank 310, the sludge outlet 312 of the sludge concentration tank 310 is connected with the inlet of the physicochemical conditioning tank 320, and the sewage outlet of the sludge concentration tank 310 is connected with the water inlet of the coagulation sedimentation device 100; the outlet of the physicochemical conditioning pool 320 is connected with the inlet of the dehydrator 330, the mud cake produced by the dehydrator 330 is collected in the sludge collecting terrace, and the sewage of the dehydrator 330 is connected with the water inlet of the coagulating sedimentation device 100.
Referring to fig. 6, the photovoltaic power generation apparatus 400 includes a plurality of solar panels 410, a combiner box 420, an inverter 430, and a photovoltaic power generation bidirectional electric meter 440, the combiner box 420 is used for combining the electric energy generated by the solar panels 410, one path of the output end of the combiner box 420 is connected to at least an electrical appliance of the deep sewage purification system via the inverter 430 to provide power to the electrical appliance, and the other path is connected to the power grid via the inverter and the photovoltaic power generation bidirectional electric meter 440. The solar panel 410 is a polysilicon panel. The electric appliances of the sewage deep purification system comprise an electrolysis machine and other electric appliances (various stirrers, pumps and the like) needing electricity. When the electric quantity generated by the photovoltaic power generation device 400 is more than the electric quantity used by the sewage deep purification system 200, the surplus electric quantity of the photovoltaic power generation device 400 supplies power to the power grid through the inverter and the photovoltaic power generation bidirectional electric meter 440; when the electric quantity generated by the photovoltaic power generation device 400 is less than the electric quantity used by the deep sewage purification system 200, the electric grid supplies power to the electric appliances of the deep sewage purification system 200 through the photovoltaic power generation bidirectional electric meter 440 and the inverter 430.
The measured water quality of the wastewater to be treated is shown in Table 5.
TABLE 5
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 190 5 Ammonia nitrogen mg/L 30
2 BOD 5 mg/L 71 6 Total nitrogen mg/L 35
3 Total phosphorus mg/L 3 7 Color intensity Multiple times 150
4 SS mg/L 200 8 pH value - 7.5
The complementary sewage deep purification system of portable photoelectricity of certain 50 tons/day above this embodiment adopts and handles the pending sewage in the pair 5 and adopts the photovoltaic power generation device who sets up in the container surface to the power supply with electrical apparatus of sewage deep purification system at sewage treatment's in-process, and concrete step includes:
s1, coagulating sedimentation: quantitatively pumping the sewage to be treated into a pH adjusting tank 110, starting a stirrer, pumping 10% sodium hydroxide solution, stirring and mixing for 2 minutes, adjusting the pH of the sewage to be treated to 9.0, and making the sewage flow into a coagulation tank 120 from the pH adjusting tank 110 by using a liquid level difference according to the ratio of 1200mL/m 3 Pumping 10% ferric sulfate solution, stirring and mixing for 5 min, and making sewage flow from coagulation tank 120 into coagulation-assistant tank 130 by using liquid level difference according to 300mL/m 3 Pumping 1.0 per mill of PAM solution, stirring and mixing for 2 minutes, making the sewage flow from the coagulation aiding tank 130 into the sedimentation tank 140 by using the liquid level difference for sedimentation for 60 minutes, and making the supernatant of the sedimentation tank 140 flow into the intermediate water tank 150 by using the liquid level difference.
The coagulating sedimentation is mainly used for removing a large amount of SS, COD and BOD in sewage 5 Total phosphorus and various heavy metal ions are removed by over 95 percent of SS, COD and BOD after coagulating sedimentation treatment 5 More than 80-90% of the total phosphorus is removed, more than 95% of the total phosphorus is removed, and more than 95% of various heavy metal ions are removed.
S2, ion catalysis, electrolysis and denitrification: starting a lift pump, pumping the effluent of the intermediate water tank 150 into a pipeline mixer 253, wherein the concentration of chloride ions in the effluent of the intermediate water tank 150 is 43mg/L, and starting a delivery pump 252 in an ion catalyst feeding device 250 because the concentration of the chloride ions in the water body is lower than 100mg/L, and adding 10% of hypochlorous acid into the pipeline mixer 253The sodium acid is used for increasing the concentration of chloride ions in the sewage to 100mg/L, the sewage and a chloride ion catalyst are uniformly mixed in a pipeline mixer 253 and then are pumped into an electrolytic machine 210 for ion catalytic electrolysis denitrification, the working voltage of the electrolytic machine is 48V, the current of the electrolytic machine is 410A, the electrolyzed clean water enters a degassing tank 230 for gas-liquid separation, bubbles at the upper part are scraped into a bubble collecting tank through a residue scraping machine, the lower part clear liquid is pumped into the electrolytic machine 210 again through a circulating pump 235 for further electrolytic purification until ammonia nitrogen, total nitrogen, COD and BOD are qualified and then discharged into an aeration tank for aeration, and the residual sodium hypochlorite is removed and then discharged into a natural water body. The ion catalytic electrolytic denitrification is mainly used for removing ammonia nitrogen and total nitrogen, and simultaneously removing residual SS and COD in sewage after coagulating sedimentation Cr 、BOD 5 And total phosphorus, the water quality of the effluent after the ion catalysis, electrolysis and denitrification is shown in the table 6, and the following indexes are specifically met: COD Cr ≤40mg/L、BOD 5 Less than or equal to 10mg/L, ammonia nitrogen less than or equal to 1.5mg/L, total nitrogen less than or equal to 3mg/L, total phosphorus less than or equal to 0.2mg/L, SS less than or equal to 8mg/L, chromaticity less than or equal to 2, and fecal coliform number less than 3/L.
TABLE 6
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 32 5 Ammonia nitrogen mg/L 0.5
2 BOD 5 mg/L 8 6 Total nitrogen mg/L 2.9
3 Total phosphorus mg/L 0.12 7 Color intensity Multiple times 2
4 SS mg/L 6 8 pH value - 7.5
Example 4 Mobile photoelectric complementary deep purification System for wastewater with daily throughput of 500 ton/day
Referring to fig. 1 and fig. 2, the 500 ton/day mobile photoelectric complementary deep sewage purification system provided by the present embodiment comprises a container 1 capable of being hoisted, a deep sewage purification system 2 integrated in the container, and a photovoltaic power generation device 400 disposed on the surface of the container, wherein the geometric dimension of the container 1 is 2300 × 1350 × 2780(mm), and the deep sewage purification system 2 integrated in the container comprises a coagulation sedimentation device 100 and an ion-catalyzed electrolytic denitrification device 200.
Referring to fig. 3, the coagulating sedimentation device 100 comprises a pH adjusting tank 110, a coagulating basin 120, a coagulation assisting tank 130, a sedimentation tank 140 and an intermediate water tank 150, wherein the geometric size of the pH adjusting tank 110 is a square barrel or a round barrel with 1000 liters, a water inlet of the pH adjusting tank 110 is connected with a sewage source, and a water outlet of the pH adjusting tank 110 is connected with a water inlet of the coagulating basin 120; the geometric dimension of the coagulation basin 120 is a square barrel or a round barrel with 3000 liters, and the water outlet of the coagulation basin 120 is connected with the water inlet of the coagulation aiding basin 130; the geometric dimension of the coagulation aiding tank 130 is a square barrel or a round barrel with 1000 liters, and the water outlet of the coagulation aiding tank 130 is connected with the water inlet of the sedimentation tank 140; the physical dimension of the sedimentation tank 140 is a 18000L square barrel or round barrel, the water outlet of the sedimentation tank 140 is connected with the water inlet of the middle water tank 150, and the bottom of the sedimentation tank 140 is also provided with a sludge discharge port; the geometric dimension of the middle water tank 150 is a square barrel or a round barrel of 2000 liters, and the water outlet of the middle water tank 150 is connected with an ion catalytic electrolytic denitrification device 200. Stirrers are arranged in the pH adjusting tank 110, the coagulation tank 120 and the coagulation aiding tank 130.
Referring to fig. 4, the ion-catalyzed electrolytic denitrification apparatus 200 includes an electrolyzer 210, a dc power supply 220, a degassing tank 230, an electrode cleaning apparatus 240, and an ion catalyst feeding apparatus 250; the electrolyzer 210 is a round tube with a geometric dimension phi of 315 multiplied by 2500(mm), and an electrode group is arranged in the tube; the water inlet of the electrolysis machine 210 is connected with the water outlet of the middle water pool 150 of the coagulating sedimentation device 100, and the water outlet of the electrolysis machine 210 is connected with the water inlet of the degassing tank 230; the geometrical size of the degassing tank 230 is phi 1600 multiplied by 2800(mm) round barrel, a water outlet 400(mm) away from the top of the round barrel is connected with an aeration tank through a phi 100 pipeline, and a water outlet pipe of the degassing tank 230 is also provided with a circulating pump 235 connected with a water inlet pipe of the electrolysis machine 210. The electrode cleaning device 240 comprises a pickling solution storage tank 241 and a pickling solution delivery pump 242, wherein the outlet of the pickling solution storage tank 241 is connected with the water outlet of the electrolysis machine 210, the pickling solution delivery pump 242 is arranged on the connecting pipeline of the outlet of the pickling solution storage tank and the electrolysis machine, and the inlet of the pickling solution storage tank is connected with the water inlet of the electrolysis machine. Wherein, the acid washing solution adopts 2 to 3 percent hydrochloric acid solution or 4 to 5 percent citric acid solution. The ion catalyst adding device 250 comprises a chloride ion catalyst solution storage tank 251 and a delivery pump 252, wherein the outlet of the chloride ion catalyst solution storage tank 251 is connected with the inlet of a pipeline mixer 253 under the action of the delivery pump 252.
A water inlet 231 of a degassing tank 230 of the ion catalytic electrolytic denitrification apparatus 200 is connected with a water distributor 232 positioned at the bottom of the degassing tank 230, a water outlet at the upper part of the degassing tank 230 is connected with a water inlet of an aeration tank, and the top of the degassing tank 230 is further provided with a slag scraper and a bubble collecting tank.
Referring to fig. 5, the sludge treatment device 300 comprises a sludge pump, a sludge concentration tank 310, a physicochemical conditioning tank 320 and a dehydrator 330, wherein the inlet of the sludge pump is respectively connected with the sludge outlets of the coagulation sedimentation device 100 and the ion catalysis electrolysis denitrification device 200, the outlet of the sludge pump is connected with the inlet of the sludge concentration tank 310, the sludge outlet 312 of the sludge concentration tank 310 is connected with the inlet of the physicochemical conditioning tank 320, and the sewage outlet of the sludge concentration tank 310 is connected with the water inlet of the coagulation sedimentation device 100; the outlet of the physicochemical conditioning pool 320 is connected with the inlet of the dehydrator 330, the mud cake produced by the dehydrator 330 is collected in the sludge collecting terrace, and the sewage of the dehydrator 330 is connected with the water inlet of the coagulating sedimentation device 100.
Referring to fig. 6, the photovoltaic power generation apparatus 400 includes a plurality of solar panels 410, a combiner box 420, an inverter 430, and a photovoltaic power generation bidirectional electric meter 440, the combiner box 420 is used for combining the electric energy generated by the solar panels 410, one path of the output end of the combiner box 420 is connected to at least an electrical appliance of the deep sewage purification system via the inverter 430 to provide power to the electrical appliance, and the other path is connected to the power grid via the inverter and the photovoltaic power generation bidirectional electric meter 440. The solar panel 410 is a single crystal silicon panel. The electric appliances of the sewage deep purification system comprise an electrolysis machine and other electric appliances (various stirrers, pumps and the like) needing electricity. When the electric quantity generated by the photovoltaic power generation device 400 is more than the electric quantity used by the sewage deep purification system 200, the surplus electric quantity of the photovoltaic power generation device 400 supplies power to the power grid through the inverter and the photovoltaic power generation bidirectional electric meter 440; when the power generated by the photovoltaic power generation device 400 is less than the power consumption of the deep wastewater purification system 200, the power grid supplies power to the electrical appliances of the deep wastewater purification system 200 via the photovoltaic power generation bidirectional electric meter 440 and the inverter 430.
The measured water quality of the wastewater to be treated is shown in Table 7.
TABLE 7
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 300 5 Ammonia nitrogen mg/L 31
2 BOD 5 mg/L 140 6 Total nitrogen mg/L 33.5
3 Total phosphorus mg/L 3.5 7 Color intensity Multiple times 120
4 SS mg/L 200 8 pH value - 7
This embodiment adopts the complementary sewage deep purification system of portable photoelectricity of above certain 50 tons/day to handle the sewage that awaits treatment in the pair 7 and adopts the photovoltaic power generation device who sets up in the container surface to the power supply with electrical apparatus of sewage deep purification system at sewage treatment's in-process, and concrete step includes:
s1, coagulating sedimentation: quantitatively pumping the sewage to be treated into a pH adjusting tank 110, starting a stirrer, pumping 10% sodium hydroxide solution, stirring and mixing for 2 minutes, adjusting the pH of the sewage to be treated to 9.0, and making the sewage flow into a coagulation tank 120 from the pH adjusting tank 110 by using a liquid level difference according to a ratio of 900mL/m 3 Pumping 10% aluminum sulfate solution, stirring and mixing for 5 min, and making the sewage flow from the coagulation tank 120 into the coagulation aiding tank 130 by using the liquid level difference according to the ratio of 300mL/m 3 Pumping 1.0 per mill of PAM solution, stirring and mixing for 2 minutes, making the sewage flow from the coagulation aiding tank 130 into the sedimentation tank 140 by using the liquid level difference for sedimentation for 60 minutes, and making the supernatant of the sedimentation tank 140 flow into the intermediate water tank 150 by using the liquid level difference.
The coagulating sedimentation is mainly used for removing a large amount of SS, COD and BOD in sewage 5 Total phosphorus and various heavy metal ions are removed by over 95 percent of SS, COD and BOD after coagulating sedimentation treatment 5 More than 80-90% of the total phosphorus is removed, more than 95% of the total phosphorus is removed, and more than 95% of various heavy metal ions are removed.
S2, ion catalysis, electrolysis and denitrification: starting a lift pump, pumping the effluent of the intermediate water tank 150 into a pipeline mixer 253, wherein the concentration of chloride ions in the effluent of the intermediate water tank 150 is 55mg/L, and because the concentration of the chloride ions in the water body is lower than 100mg/L, starting a delivery pump 252 in an ion catalyst feeding device 250, adding 11% of sodium hypochlorite into the pipeline mixer 253 to increase the concentration of the chloride ions in the sewage to 130mg/L, uniformly mixing the sewage and the chloride ion catalyst in the pipeline mixer 253, pumping the mixture into an electrolysis machine 210 for ion catalytic electrolysis denitrification, the working voltage of the electrolysis machine is 45V, the current is 1000A, the electrolyzed clean water enters the degassing tank 230 for gas-liquid separation, the bubbles at the upper part are scraped into a bubble collecting tank through the slag scraper, the lower clear liquid is pumped into the electrolysis machine 210 again through the circulating pump 235 for further electrolysis and purification until the ammonia nitrogen, the total nitrogen, the COD and the BOD are qualified and then discharged.Aerating in an aeration tank, removing residual sodium hypochlorite and then discharging into natural water. The ion catalytic electrolytic denitrification is mainly used for removing ammonia nitrogen and total nitrogen, and simultaneously removing residual SS and COD in sewage after coagulating sedimentation Cr 、BOD 5 And total phosphorus, the water quality of the effluent after the ion catalysis, electrolysis and denitrification is shown in the table 8, and the following indexes are specifically met: COD Cr ≤40mg/L、BOD 5 Less than or equal to 10mg/L, ammonia nitrogen less than or equal to 1.5mg/L, total nitrogen less than or equal to 2.6mg/L, total phosphorus less than or equal to 0.2mg/L, SS less than or equal to 8mg/L, chromaticity less than or equal to 2, and faecal coliform number less than 3/L.
TABLE 8
Serial number Item Unit of Measured value Serial number Item Unit of Measured value
1 COD Cr mg/L 25 5 Ammonia nitrogen mg/L 1.5
2 BOD 5 mg/L 6 6 Total nitrogen mg/L 2.6
3 Total phosphorus mg/L 0.22 7 Color intensity Multiple times 2
4 SS mg/L 7 8 pH value - 7.1
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (8)

1. The mobile photoelectric complementary deep sewage purification system is characterized by comprising a container capable of being hoisted, a deep sewage purification system integrated in the container and a photovoltaic power generation device arranged on the surface of the container, wherein the deep sewage purification system comprises a coagulating sedimentation device and an ion catalysis electrolysis denitrification device; the coagulating sedimentation device comprises a pH adjusting tank, a coagulating tank, a coagulation aiding tank, a sedimentation tank and an intermediate water tank, wherein a water outlet of the pH adjusting tank is connected with a water inlet of the coagulating tank, a water outlet of the coagulating tank is connected with a water inlet of the coagulation aiding tank, a water outlet of the coagulation aiding tank is connected with a water inlet of the sedimentation tank, and a water outlet of the sedimentation tank is connected with a water inlet of the intermediate water tank; the ion catalysis electrolysis denitrification device comprises an electrolysis machine, a degassing tank and an ion catalyst feeding device, wherein a water inlet of the electrolysis machine is connected with a water outlet of a middle water tank of the coagulation sedimentation device, a pipeline mixer is arranged on a connecting pipeline of the electrolysis machine and the middle water tank, an outlet of the ion catalyst feeding device is connected with an inlet of the pipeline mixer, a water outlet of the electrolysis machine is connected with a water inlet of the degassing tank, one path of the water outlet of the degassing tank is connected with a clear water drain pipe, and the other path of the water outlet of the degassing tank is connected with an inlet of the pipeline mixer through a circulating pump; photovoltaic power generation device includes a plurality of solar panel, collection flow box, dc-to-ac converter and the two-way ammeter of photovoltaic power generation, the collection flow box is used for converging to the produced electric energy of solar panel, the output of collection flow box is connected with electrical apparatus with sewage deep purification system at least via the dc-to-ac converter all the way and provides the power to electrical apparatus, and another way is connected with the electric wire netting via inverter and the two-way ammeter of photovoltaic power generation.
2. The mobile photoelectric complementary deep sewage purification system of claim 1, wherein when the amount of electricity generated by the photovoltaic power generation device is greater than the amount of electricity used by the deep sewage purification system, the excess amount of electricity of the photovoltaic power generation device supplies electricity to the power grid via the inverter and the photovoltaic power generation bidirectional electricity meter; when the electric quantity generated by the photovoltaic power generation device is less than the electric quantity used by the sewage deep purification system, the electric grid supplies power to electric appliances of the sewage deep purification system through the photovoltaic power generation bidirectional ammeter and the inverter.
3. The mobile photoelectric complementary sewage deep purification system of claim 1, wherein the water inlet of the degassing tank is connected with a water distributor at the bottom of the degassing tank, the top of the degassing tank is further provided with a slag scraper and a bubble scum collecting tank, and the slag scraper is used for scraping bubbles on the liquid surface in the degassing tank into the bubble collecting tank.
4. The mobile photoelectric complementary sewage deep purification system of claim 1, wherein a water outlet of the degassing tank is arranged 300-1000 mm away from the top of the degassing tank, and an aeration tank is arranged on a pipeline connecting the water outlet of the degassing tank with a clear water drain pipe.
5. The system of claim 1, wherein the ion-catalyzed electrolytic denitrification device further comprises an electrode cleaning device, the electrode cleaning device comprises a pickling solution storage tank and a pickling solution delivery pump, an outlet of the pickling solution storage tank is connected with a water outlet of the electrolyzer, the pickling solution delivery pump is arranged on a connecting pipeline of the pickling solution storage tank and the electrolyzer, and an inlet of the pickling solution storage tank is connected with a water inlet of the electrolyzer.
6. The mobile photoelectric complementary sewage deep purification system of claim 1, the deep sewage purification system integrated in the container also comprises a sludge treatment device, the sludge treatment device comprises a sludge concentration tank, a physicochemical conditioning tank and a dehydrator, the inlet of the sludge concentration tank is respectively connected with the sludge outlet at the bottom of the sedimentation tank in the coagulating sedimentation device and the sludge outlet at the bottom of the degassing tank in the ion catalytic electrolytic denitrification device, the sludge outlet of the sludge concentration tank is connected with the inlet of the physicochemical conditioning tank, the sewage outlet of the sludge concentration tank is connected with the water inlet of the pH adjusting tank in the coagulating sedimentation device, the outlet of the physicochemical conditioning pool is connected with the inlet of the dehydrator, the sewage outlet of the dehydrator is connected with the water inlet of the pH adjusting pool in the coagulating sedimentation device, and the clod outlet of the dehydrator is connected with the outside.
7. The mobile photoelectric complementary sewage deep purification system according to claim 1, wherein the pH adjusting tank, the coagulation tank and the coagulation aiding tank are respectively provided with a pH adjusting agent adding device, a coagulant adding device and a coagulant aid adding device, the pH adjusting agent adding device comprises a pH adjusting agent storage tank and a dosing pump, the coagulant adding device comprises a coagulant storage tank and a dosing pump, and the coagulant aid adding device comprises a coagulant storage tank and a dosing pump.
8. The mobile photoelectric complementary sewage deep purification system of claim 1, wherein one or more of on-line monitoring instruments for COD, ammonia nitrogen, total nitrogen and total phosphorus are installed at a water inlet of the mobile photoelectric complementary sewage deep purification system, and one or more of on-line monitoring instruments for residual chlorine, COD, ammonia nitrogen, total nitrogen and total phosphorus are installed at a water outlet of the mobile photoelectric complementary sewage deep purification system.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113292184A (en) * 2021-06-02 2021-08-24 皓禹(厦门)环保有限公司 Mobile photoelectric complementary sewage deep purification system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113292184A (en) * 2021-06-02 2021-08-24 皓禹(厦门)环保有限公司 Mobile photoelectric complementary sewage deep purification system and method

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