CN114315012A - Excrement wastewater treatment system and method applied to scenic spot - Google Patents
Excrement wastewater treatment system and method applied to scenic spot Download PDFInfo
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Abstract
The invention discloses a fecal sewage wastewater treatment system and method applied to scenic spots, which comprises the following steps: the scenic spot septic tanks are respectively connected with the water outlets of the toilets in the scenic spots; the water outlet end of the septic tank in the scenic spot is connected with the excrement residue filtering device, the water inlet adjusting tank, the anaerobic tank, the anoxic tank, the aerobic tank, the MBR membrane tank, the heterogeneous ozone catalytic oxidation tank, the BAF tank and the ultraviolet ozone catalytic oxidation tank in sequence; the ultraviolet ozone catalytic oxidation tank is provided with a standard discharge water outlet; the anaerobic tank, the MBR membrane tank and the BAF tank are provided with residual sludge discharge ports connected with the sludge storage tank; a porous catalyst loaded with metal active components is filled in the heterogeneous ozone catalytic oxidation tank; the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank are respectively connected with an ozone outlet pipe of the ozone generator. The treatment system can effectively treat the fecal sewage wastewater in scenic spots, ensures the quality of the effluent to reach the standard stably for a long time, and the quality of the effluent is superior to the first-class A standard requirement in the discharge standard of pollutants for municipal wastewater treatment plants GB 18918-2002.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a fecal sewage treatment system and a method applied to scenic spots.
Background
The improper treatment of the feces in the scenic spots not only pollutes the ecological environment of the scenic spots and influences the experience of tourists in the touring process, but also can cause the spread and the diffusion of diseases.
The waste water is mainly from toilet flushing water in a toilet, including urine, excrement, toilet flushing water, flushing water and the like, and contains higher organic matters, nitrogen, phosphorus and other substances and pathogenic bacteria. The excrement waste water contains a large amount of organic matters, which provide breeding derived media for mosquitoes, flies, fleas and the like, and meanwhile, a large amount of toxic and harmful gases are generated after the organic matters in the excrement are decomposed and decomposed, and foul smell is emitted. Untreated fecal sewage is directly discharged into scenic spots, eutrophication of nearby water bodies can destroy ecological environments, extremely poor visiting experience is brought to tourists, disease propagation is easily caused, and physical health of the tourists is threatened. Therefore, the scenic spot fecal sewage which cannot be connected into a centralized municipal pipe network needs to be treated in a small-scale toilet connection mode, and the single toilet is large in scale (such as a tourist center) so as to be locally and centrally treated and achieve standard discharge or recycling conditions. At present, common wastewater treatment methods at home and abroad can be classified into chemical methods, physical methods, biological methods and the like. In the treatment engineering of the fecal sewage in scenic spots, due to the complex water quality and the large fluctuation of organic load, the single chemical method, physical method and biological method are usually difficult to maintain the high-efficiency and stable treatment effect. Therefore, several technologies are generally combined in the treatment process, so that the cyclic utilization of the fecal sewage wastewater or the stable standard discharge is realized.
At present, most of fecal treatment technologies are primary pulp pretreatment researches, the treatment process efficiency is low, and the treated wastewater is directly discharged into a municipal pipe network and enters a municipal sewage treatment plant for combination treatment. In addition, most of other wastewater treatment technologies and technologies aim at domestic wastewater, industrial wastewater and rural sewage, and the treatment technologies are not suitable for treating the toilet wastewater in scenic spots and cannot be applied to treating the toilet wastewater in scenic spots. Therefore, how to carry out high-efficiency treatment with high automation degree aiming at the fecal sewage waste water of the toilets in scenic spots so as to lead the effluent quality to be stable and the effluent to be recycled is a problem to be solved.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a fecal sewage treatment system and a method applied to scenic spots, which can solve the problems that most of the prior fecal sewage treatment technologies are primary pulp pretreatment, the treatment process efficiency is low, and the treated wastewater needs to be directly discharged into a municipal pipe network to be combined with a municipal sewage treatment plant for treatment, so that the prior fecal sewage treatment system and the method are inconvenient to be applied to the treatment of fecal sewage in toilets in scenic spots.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides a fecal sewage treatment system applied to scenic spots, which comprises:
a septic tank in a scenic spot, a fecal residue filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF tank, an ultraviolet ozone catalytic oxidation tank, a sludge storage tank and at least one ozone generator; wherein the content of the first and second substances,
the scenic spot septic tanks are respectively connected with the water outlets of the toilets in the scenic spots;
the water outlet end of the septic tank in the scenic spot is sequentially connected with the excrement residue filtering device, the water inlet regulating tank, the anaerobic tank, the anoxic tank, the aerobic tank, the MBR membrane tank, the heterogeneous ozone catalytic oxidation tank, the BAF tank and the ultraviolet ozone catalytic oxidation tank;
the ultraviolet ozone catalytic oxidation tank is provided with a standard discharge water outlet;
the anaerobic tank, the MBR membrane tank and the BAF tank are provided with residual sludge discharge ports connected with the sludge storage tank;
the heterogeneous ozone catalytic oxidation tank is internally filled with a porous catalyst loaded with metal active components;
the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank are respectively connected with an ozone outlet pipe of an ozone generator;
and a residual sludge discharge port of the MBR membrane tank is connected back to the anoxic tank through a sludge return pipe.
The embodiment of the invention also provides a method for treating the fecal sewage wastewater applied to scenic spots, and the fecal sewage wastewater treatment system applied to the scenic spots comprises the following steps:
after the excrement wastewater of toilets in tourist attractions respectively flows into septic tanks in the scenic spots, the excrement wastewater sequentially enters an excrement residue filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR (membrane bioreactor) membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF (bag aerated filter) tank and an ultraviolet ozone catalytic oxidation tank from the septic tanks in the scenic spots for treatment, and air is respectively introduced into the aerobic tank, the MBR membrane tank and the BAF tank for aeration to carry out biochemical reaction in the treatment process; respectively introducing ozone gas into the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank to perform catalytic oxidation reaction;
the treated effluent passes through a standard discharge water outlet of the ultraviolet ozone catalytic oxidation tank and is discharged or recycled after reaching the standard.
According to the technical scheme provided by the invention, the system and the method for treating the excrement wastewater applied to scenic spots, which are provided by the embodiment of the invention, have the beneficial effects that:
the system is characterized in that a fecal sewage filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF tank and an ultraviolet ozone catalytic oxidation tank are organically connected to form a system capable of effectively treating fecal sewage in a scenic area; this system sets up heterogeneous ozone catalytic oxidation pond and ultraviolet ozone catalytic oxidation pond, and the load that fills through filling in the heterogeneous ozone catalytic oxidation pond and set up has metal active component's porous catalyst to and ultraviolet ray in the ultraviolet ozone catalytic oxidation pond activates ozone, thereby make ozone can just effectively get rid of the organic matter in the waste water or break the broken chain with the macromolecule organic matter under lower input. Wherein, the ultraviolet ozone catalytic oxidation pond is used as a disinfection and sterilization unit at the same time. The treatment system and the method do not need to discharge the effluent to a municipal sewage treatment plant for combined treatment, can ensure that the effluent quality stably reaches the standard for a long time, and the effluent quality is superior to the first-class A standard requirement in GB18918-2002, which is the pollutant discharge standard of urban sewage treatment plants, can meet the requirement of direct discharge or toilet recycling, and is particularly suitable for being connected to tourist attractions of centralized municipal pipe networks for treating the excrement and sewage wastewater.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fecal sewage treatment system applied to scenic spots according to an embodiment of the present invention;
the parts corresponding to each mark in the figure are: 1-a scenic spot septic tank; 2-coarse grating; 3-fine grating; 4-a water inlet adjusting tank; 5-an anaerobic tank; 6-anoxic pond; 7-an aerobic tank; 8-MBR membrane tank; 9-heterogeneous ozone catalytic oxidation pond; 10-BAF pool; 11-ultraviolet ozone catalytic oxidation pond; 12-an ozone generator; 13-a sludge storage tank; a-a standard discharge water outlet of the ultraviolet ozone catalytic oxidation tank; b, a coarse manure residue outlet of the coarse grating; c-fine manure discharge port of fine grid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a fecal sewage treatment system applied in scenic spots, which organically combines biochemical treatment and physicochemical treatment, is suitable for the fecal sewage treatment automation treatment in tourist scenic spots which cannot be connected to a centralized municipal pipe network, and can ensure that the effluent is stably discharged or recycled up to standard, and includes:
a septic tank in a scenic spot, a fecal residue filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF tank, an ultraviolet ozone catalytic oxidation tank, a sludge storage tank and at least one ozone generator; wherein the content of the first and second substances,
the scenic spot septic tanks are respectively connected with the water outlets of the toilets in the scenic spots;
the water outlet end of the septic tank in the scenic spot is sequentially connected with the excrement residue filtering device, the water inlet regulating tank, the anaerobic tank, the anoxic tank, the aerobic tank, the MBR membrane tank, the heterogeneous ozone catalytic oxidation tank, the BAF tank and the ultraviolet ozone catalytic oxidation tank;
the ultraviolet ozone catalytic oxidation tank is provided with a standard discharge water outlet;
the anaerobic tank, the MBR membrane tank and the BAF tank are provided with residual sludge discharge ports connected with the sludge storage tank;
the heterogeneous ozone catalytic oxidation tank is internally filled with a porous catalyst loaded with metal active components;
the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank are respectively connected with an ozone outlet pipe of an ozone generator;
and a residual sludge discharge port of the MBR membrane tank is connected back to the anoxic tank through a sludge return pipe.
In the treatment system, the excrement slag filtering device is composed of a coarse grating and a fine grating which are sequentially arranged;
the rear end of the coarse grating is provided with a coarse manure residue outlet;
and the rear end of the fine grid is provided with a fine manure discharge port.
Preferably, the gaps between the bars of the coarse grating are 10-40 mm; the gaps between the bars of the fine grid are 3-10 mm.
The coarse grating and the fine grating are mainly used for removing floating suspended matters which can be intercepted by the coarse grating and the fine grating in the fecal sewage of the toilets in the scenic spots, slag removal needs to be carried out regularly, and the fecal slag is transported out for centralized treatment through a slag transport vehicle after being collected.
In the treatment system, the water inlet adjusting tank and the sludge storage tank are both provided with stirrers; the water inlet adjusting tank is used for adjusting water quality and water quantity, and the outlet of the water inlet adjusting tank is connected with the water inlet of the anaerobic tank. The sludge storage tank is mainly used for collecting residual sludge of the biochemical treatment unit and then conveying the residual sludge to a sludge dewatering room for sludge dewatering.
The anaerobic tank adopts any one of an upflow anaerobic tank, a contact anaerobic tank and an anaerobic fluidized bed; the anaerobic tank is mainly used for decomposing macromolecular organic matters in the scenic spot fecal sewage into micromolecular organic matters through reactions such as hydrolysis, acidification, methanation and the like under the action of various anaerobic bacteria, the biodegradability of the waste water is improved, the biochemical units in the later period are convenient to further degrade, and the outlet of the anaerobic tank is connected with the water inlet of the anoxic tank.
The anoxic tank adopts a completely mixed anoxic tank, and a stirrer or a flow impeller is arranged in the anoxic tank; the anoxic tank mainly performs denitrification, nitrogen and phosphorus removal and can also remove a part of organic matters, and an outlet of the anoxic tank is connected with a water inlet of the aerobic tank.
The aerobic tank adopts a biomembrane process aerobic tank or an activated sludge process aerobic tank, and aeration devices are arranged at the bottom in the aerobic tank; the aeration device is connected with an external aeration system, the main function of the aerobic tank is to remove most organic matters in wastewater, and the outlet of the aerobic tank is connected with the water inlet of the MBR tank.
The MBR tank is arranged independently or is combined with the aerobic tank and is positioned at the rear end of the aerobic tank; the membrane cleaning device is characterized in that a membrane frame is arranged in the MBR tank, the membrane module is arranged on the membrane frame, an aeration device is arranged below the membrane module, a production tank and a clean water tank are respectively arranged at the rear end of the membrane module, and a membrane cleaning mechanism is arranged in the MBR tank. Preferably, the MBR membrane material of the membrane module of the MBR tank is PVDF. The air inlet of the aeration device is connected with the aeration system. The water inlet of the device is connected with the aerobic tank, and the water outlet of the device enters the heterogeneous ozone catalytic oxidation tank.
In the above treatment system, the heterogeneous ozone catalytic oxidation tank comprises: the device comprises a reaction tank, a catalyst support frame, a first water distribution mechanism and a first gas distribution mechanism;
wherein the catalyst support frame is arranged in the middle part in the reaction tank, and the porous catalyst loaded with the metal active component is filled in the catalyst support frame;
a first water distribution mechanism is arranged in the reaction tank above the catalyst support frame and is connected with a water inlet pipe of the reaction tank;
the first gas distribution mechanism is arranged at the bottom in the reaction tank below the catalyst support frame and is connected with an ozone outlet pipe of the ozone generator;
the BAF pool includes: the tank body is internally provided with a filler, a second water distribution mechanism and a second gas distribution mechanism;
the second water distribution mechanism is connected with a water inlet pipe of the BAF pool;
the back washing mechanism and the filler are correspondingly arranged in the tank body, and the back washing mechanism is respectively connected with the fan and the water pump;
and the second gas distribution mechanism is connected with the aeration system and used for providing oxygen required by the reaction for the BAF pool and keeping a certain dissolved oxygen concentration.
Preferably, the porous catalyst loaded with the metal active component is an active carbon-based catalyst or an alumina-based catalyst loaded with the active metal component;
the filler in the BAF tank body adopts ceramsite or activated carbon.
In the above treatment system, the ultraviolet ozone catalytic oxidation tank includes: the device comprises a reaction tank, a plurality of ultraviolet lamp tubes, an ultraviolet control module, a third water distribution mechanism and a third gas distribution mechanism; wherein the content of the first and second substances,
a plurality of ultraviolet lamp tubes are uniformly arranged in the reaction tank, and each ultraviolet lamp tube is electrically connected with the ultraviolet control module;
the third water distribution mechanism is connected with a water inlet pipe of the reaction tank;
and the third gas distribution mechanism is connected with an ozone outlet pipe of the ozone generator.
The ozone generator is provided with two ozone outlet pipes, the two ozone outlet pipes are respectively connected with the heterogeneous ozone catalytic oxidation pool and the ultraviolet ozone catalytic oxidation pool, namely the heterogeneous ozone catalytic oxidation pool and the ultraviolet ozone catalytic oxidation pool share one ozone generator and can respectively provide ozone for the heterogeneous ozone catalytic oxidation pool and the ultraviolet ozone catalytic oxidation pool; the purposes of saving ozone generators and facilitating control are achieved. Or two ozone generators which are respectively connected with the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank. Preferably, the ozone generator is an oxygen source ozone generator, and an air source ozone generator can also be used.
The embodiment of the invention also provides a method for treating the fecal sewage wastewater applied to scenic spots, which adopts the fecal sewage wastewater treatment system applied to scenic spots (see figure 1) and comprises the following steps:
after the excrement wastewater of toilets in tourist attractions respectively flows into septic tanks in the scenic spots, the excrement wastewater sequentially enters an excrement residue filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR (membrane bioreactor) membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF (bag aerated filter) tank and an ultraviolet ozone catalytic oxidation tank from the septic tanks in the scenic spots for treatment, and air is respectively introduced into the aerobic tank, the MBR membrane tank and the BAF tank for aeration to carry out biochemical reaction in the treatment process; respectively introducing ozone gas into the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank to perform catalytic oxidation reaction;
the treated effluent passes through a standard discharge water outlet of the ultraviolet ozone catalytic oxidation tank and is discharged or recycled after reaching the standard.
In the treatment method, the volume ratio of the air and the inlet water fed into the aerobic tank is as follows: 0.5 to 10;
the volume ratio of air and inlet water fed into the MBR membrane tank is as follows: 0.5 to 8;
the volume ratio of air and inlet water put into the BAF pool is as follows: 0.5 to 5.
Adding 10-100 mg of ozone per liter of wastewater into the heterogeneous ozone catalytic oxidation tank;
the adding amount of ozone introduced into the ultraviolet ozone catalytic oxidation tank is 10-50 mg of ozone per L of wastewater;
the hydraulic retention time of the anaerobic tank is 2-10 h;
the hydraulic retention time of the anoxic pond is 2-10 h, and the sludge concentration is 5000-10000 mg/L;
the hydraulic retention time of the aerobic tank is 5-15 h, the sludge concentration is 5000-15000 mg/L, and the dissolved oxygen concentration is 1-5 mg/L;
the membrane flux of the membrane component of the MBR membrane tank is 10-18L/m2H, transmembrane pressure difference ranges from 5 kPa to 50kPa, and the maintenance cleaning period of sodium hypochlorite ranges from 5 days to 20 days;
the hydraulic retention time of the heterogeneous ozone catalytic oxidation tank is 20-120 min;
the hydraulic retention time of the BAF pool is 1-3 h;
the hydraulic retention time of the ultraviolet ozone catalytic oxidation tank is 10-60 min, and the power of an ultraviolet lamp is 0.3-4 kW/m3And (4) waste water.
In the treatment method, the adding amount of the catalyst added into the heterogeneous ozone catalytic oxidation tank is 20-50% of the effective volume of the reaction tank of the heterogeneous ozone catalytic oxidation tank.
The invention has the beneficial effects that: the system capable of effectively treating the fecal sewage in the scenic area is formed by organically connecting the fecal residue filtering device (consisting of a coarse grid and a fine grid), the water inlet adjusting tank, the anaerobic tank, the anoxic tank, the aerobic tank, the MBR membrane tank, the heterogeneous ozone catalytic oxidation tank, the BAF tank and the ultraviolet ozone catalytic oxidation tank. This system sets up inhomogeneous phase ozone catalytic oxidation pond and ultraviolet ozone catalytic oxidation pond, activates ozone through the porous catalyst and the ultraviolet light that load has metal active component to make ozone can effectively get rid of the organic matter in the waste water or break the broken chain with the macromolecule organic matter under lower input volume. Wherein, the ultraviolet ozone catalytic oxidation tank can also be used as a disinfection and sterilization unit. The treatment system and the method can ensure that the effluent quality reaches the standard stably for a long time, and the effluent quality is superior to the first-class A standard requirement in GB18918-2002 pollutant discharge Standard of urban Sewage treatment plant, and can meet the requirement of direct discharge or reuse in toilets.
The embodiments of the present invention are described in further detail below.
As shown in fig. 1, an embodiment of the present invention provides a fecal sewage treatment system applied in scenic spots, which can solve environmental pollution or disease transmission caused by untreated or substandard discharge of fecal sewage in toilets in scenic spots, the system comprising:
a scenic spot septic tank, a coarse grid, a fine grid, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF tank, an ultraviolet ozone catalytic oxidation tank, a sludge storage tank and an ozone generator; wherein the content of the first and second substances is controlled,
the septic tank in scenic spot, thick grid, thin grid, adjusting tank, anaerobism pond, oxygen deficiency pond, good oxygen pond, MBR membrane cisterna, heterogeneous ozone catalytic oxidation pond, BAF pond and ultraviolet ozone catalytic oxidation pond be connected in order.
The coarse grating and the fine grating are mainly used for removing floating suspended matters which can be intercepted by the coarse grating and the fine grating in the fecal sewage of the toilets in scenic spots, slag removal needs to be carried out regularly, and the fecal slag is transported out for centralized treatment by a slag transport vehicle after being collected.
The water inlet adjusting tank is internally provided with a stirrer which is mainly used for adjusting water quality and water quantity, and the outlet of the stirrer is connected with a water inlet of the anaerobic tank.
The anaerobic tank adopts various forms such as up-flow type, anaerobic contact type, anaerobic fluidized bed and the like, and mainly decomposes macromolecular organic matters in the scenic spot fecal sewage into micromolecular organic matters through reactions such as hydrolysis, acidification, methanation and the like under the action of various anaerobic bacteria, so that the biodegradability of the waste water is improved, the later-stage biochemical unit is convenient to further degrade, and the outlet of the anaerobic tank is connected with the water inlet of the anoxic tank.
The anoxic tank is a completely mixed type tank, and a stirrer or a flow impeller can be arranged in the anoxic tank. Mainly carries out denitrification, removes nitrogen and phosphorus, and simultaneously can remove a part of organic matters, and the outlet of the organic matters is connected with the water inlet of the aerobic tank.
The aerobic tank can be a biomembrane method or an activated sludge method, and aeration devices are arranged at the bottom of the aerobic tank and connected with an aeration system. The main function is to remove most organic matters in the wastewater, and the outlet of the wastewater is connected with the water inlet of the MBR tank.
The MBR tank can be independently arranged, can also be combined with the aerobic tank and is arranged at the water outlet section at the rear end of the aerobic tank. An aeration device, a membrane frame, a membrane assembly, a water production tank, a clean water tank and a membrane cleaning system are arranged in the MBR tank, wherein the MBR membrane is made of PVDF. The air inlet of the aeration device is connected with the aeration system. The water inlet of the device is connected with the aerobic tank, and the water outlet of the device enters the heterogeneous ozone catalytic oxidation tank.
The heterogeneous ozone catalytic oxidation tank comprises a reaction tank, a catalyst and a water and gas distribution system. The catalyst can be active carbon-based or alumina-based catalyst loaded with active metal components. The bottom of the heterogeneous ozone-oxygen catalytic oxidation is provided with a water and gas distribution system, the middle part of the heterogeneous ozone-oxygen catalytic oxidation is filled with a catalyst on a support frame, and the top of the heterogeneous ozone-oxygen catalytic oxidation is provided with a water supply system. Wherein the air inlet of the ozone aeration disc is connected with the ozone outlet of the ozone generator.
The BAF pool comprises a pool body, a filler, a back flushing system, a fan, a water pump and a corresponding water pipeline. A water and gas distribution system is arranged in the BAF tank, and the filler can be a material carrier such as ceramsite, activated carbon and the like.
The ultraviolet ozone catalytic oxidation pond comprises: the device comprises a reaction tank, a plurality of ultraviolet lamp tubes, an ultraviolet control module and a water and gas distribution system. The air inlet of the air distribution system is connected with an ozone outlet pipe of an ozone generator, and the ozone generator can be shared by a heterogeneous ozone catalytic oxidation tank. Wherein the ultraviolet lamp tubes are uniformly arranged in the reaction zone.
And a stirrer is arranged in the sludge storage tank, and is mainly used for collecting residual sludge of the biochemical treatment unit and then conveying the residual sludge to a sludge dewatering room for sludge dewatering.
The ozone generator can adopt an air source or an oxygen source, and preferably adopts an oxygen source ozone generator. The ozone generator can simultaneously and respectively provide ozone for the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank.
The following description will be made in detail with reference to fig. 1 for the treatment process of the fecal sewage wastewater in the scenic area by using the above system, which comprises the following steps:
the specific processing flow of the processing method is as follows: after passing through a scenic spot septic tank, the scenic spot fecal sewage is lifted by a lifting pump, passes through a coarse grating and a fine grating to remove most suspended matters and impurities in the sewage, and then enters a water inlet adjusting tank, so that a subsequent water pump unit and a pipeline valve are prevented from being blocked, and the normal operation of subsequent equipment is ensured; the gaps between the bars of the coarse grating are 10-40 mm, and coarse suspended matters and impurities are removed; gaps between grid bars of the fine grids are 3-10 mm, and suspended matters and impurities which are not intercepted by the coarse grids are mainly intercepted;
after the water quality and the water quantity are homogenized by the water inlet adjusting tank, the water outlet of the water inlet adjusting tank sequentially enters an anaerobic tank, an anoxic tank, an aerobic tank and an MBR membrane tank for biochemical treatment; the anaerobic tank carries out biochemical reaction for 2-10 h of hydraulic retention time, and is used for decomposing macromolecular organic matters in the wastewater into micromolecular organic matters, so that the biodegradability of the wastewater is improved, and the further degradation of later biochemical units is facilitated;
the anoxic tank performs biochemical reaction for 2-10 h of hydraulic retention time, the sludge concentration is basically kept at 5000-10000 mg/L, denitrification is mainly performed, nitrogen and phosphorus removal is performed, and meanwhile, a part of organic matters can also be removed;
performing biochemical reaction in the aerobic tank for 5-15 h of hydraulic retention time, basically keeping the sludge concentration at 5000-15000 mg/L and the dissolved oxygen concentration at 1-5 mg/L, mainly removing most organic matters and nitrifying organic nitrogen;
the membrane flux of the MBR membrane tank is 10-18L/m2H, transmembrane pressure difference ranges from 5 kPa to 50kPa, and the maintenance cleaning period of sodium hypochlorite ranges from 5 days to 20 days; the MBR membrane can effectively intercept suspended matters in the wastewater, reduce the consumption of the suspended matters on ozone of a subsequent heterogeneous ozone catalytic oxidation tank and the blockage of an ozone catalyst thereof, and improve the efficiency of heterogeneous ozone catalytic oxidation;
enabling the effluent of the MBR membrane tank to enter a heterogeneous ozone catalytic oxidation tank, introducing ozone gas into the heterogeneous ozone catalytic oxidation tank, performing oxidation reaction for 20-120 min of hydraulic retention time, and generating free radicals by the ozone under the catalysis of a porous catalyst loaded with metal active components to further degrade and remove pollutants in the wastewater and improve the biochemical property of the wastewater;
the effluent of the heterogeneous ozone catalytic oxidation tank enters a BAF tank, air is introduced into the BAF tank for aeration, and biochemical reaction is carried out for 1-3 h by hydraulic retention time so as to remove organic matters which can be biochemically degraded after ozone catalytic oxidation in water; because BAF inlet water is outlet water of the heterogeneous ozone catalytic oxidation tank, the microorganisms loaded on the BAF filler remove organic matters which can be biochemically generated after heterogeneous ozone catalytic oxidation;
the effluent of the BAF tank enters an ultraviolet ozone catalytic oxidation tank, ozone is introduced into the ultraviolet ozone catalytic oxidation tank, an ultraviolet lamp tube is opened, the ultraviolet lamp tube is subjected to oxidation reaction for 10-60 min, ozone generates free radicals under the catalytic action of an ultraviolet lamp to oxidize the residual pollutants in the wastewater, the residual organic matters which are difficult to degrade in the wastewater are removed, and the wastewater is disinfected; because the wastewater is rich in oxygen, the aeration quantity of the ultraviolet ozone catalytic oxidation tank is reduced compared with the conventional BAF;
and the effluent of the ultraviolet ozone catalytic oxidation tank is discharged through a standard discharge water outlet to be discharged or further recycled.
The effect of the advanced treatment of the present invention will be described below with reference to examples, but the scope of the claims of the present invention is not limited thereto.
Examples
The fecal sewage treatment system applied to scenic spots of the invention is used for treating the fecal sewage of toilets in a centralized service area of a certain scenic spot, and the treatment capacity is 2m3H; the gap between the grid bars of the coarse grid is 25 mm; the gap between the grid bars of the fine grids is 5 mm; the water conservancy retention time of the anaerobic tank is 2 hours; the water conservancy residence time of the anoxic pond is 4.5h, and the sludge concentration is basically kept at about 7000 mg/L; the water retention time of the aerobic pool is 8h, the sludge concentration is basically kept at 10000mg/L, and the dissolved oxygen concentration is about 2.5 mg/L; the MBR membrane component is arranged at the tail end of the aerobic tank, and the membrane flux is 14L/m2H, transmembrane pressure difference ranges from 5 kPa to 50kPa, and the maintenance cleaning cycle of sodium hypochlorite is 10 days; carrying out oxidation reaction in a heterogeneous ozone catalytic oxidation tank with the hydraulic retention time of 20min, and adopting an active carbon-based catalyst loaded with metal active components, wherein the adding amount of the catalyst is 20% of the volume of an empty bed; the hydraulic retention time of the BAF pool is 1 h; the water power retention time of the ultraviolet ozone catalytic oxidation pond is 10min, and the ultraviolet power is 1.68 kW. The ozone generator adopts oxygenThe source ozone generator supplies heterogeneous ozone catalytic oxidation pool and ultraviolet ozone catalytic oxidation pool. COD of inlet waterCrThe average water inlet concentration is 850mg/L from 1000 to 650mg/L, and the COD of the outlet waterCrThe average value is 39mg/L and the average removal rate is 94 percent under 50 mg/L. Feed water NH3The inlet water concentration and fluctuation of N from 125-58 mg/L are relatively large, the average inlet water concentration is 89.5mg/L, the average removal rate is 95%, the outlet water is below 5mg/L, the average value is 3.8mg/L, and NH is generated during stable operation3the-N phenomenon of exceeding the standard in two days is mainly caused by high water inlet ratio in the previous day. The fluctuation of the inlet water TP is relatively large from 12-8 mg/L, the average inlet water concentration is 9.5mg/L, the outlet water is below 0.5 mg/L, and the average value is 0.37mg/LCr、NH3N and TP can ensure 100 percent of emission reaching the standard.
The detection result of the quality of the treated effluent shows that the fecal sewage treatment system can effectively treat the fecal sewage in scenic spots, ensure the quality of the effluent to reach the standard stably for a long time, and the quality of the effluent is superior to the first-class A standard requirement in the discharge standard of pollutants for municipal wastewater treatment plants GB 18918-2002. Can solve the problem of pollution to the environment caused by substandard fecal sewage treatment of the toilet in the prior scenic spot.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a be applied to dirty effluent disposal system of excrement in scenic spot which characterized in that includes:
the system comprises a scenic spot septic tank, a fecal residue filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF tank, an ultraviolet ozone catalytic oxidation tank, a sludge storage tank and at least one ozone generator; wherein the content of the first and second substances,
the scenic spot septic tanks are respectively connected with the water outlets of the toilets in the scenic spots;
the water outlet end of the septic tank in the scenic spot is sequentially connected with the excrement residue filtering device, the water inlet regulating tank, the anaerobic tank, the anoxic tank, the aerobic tank, the MBR membrane tank, the heterogeneous ozone catalytic oxidation tank, the BAF tank and the ultraviolet ozone catalytic oxidation tank;
the ultraviolet ozone catalytic oxidation tank is provided with a standard discharge water outlet;
the anaerobic tank, the MBR membrane tank and the BAF tank are provided with residual sludge discharge ports connected with the sludge storage tank;
a porous catalyst loaded with metal active components is filled in the heterogeneous ozone catalytic oxidation tank;
the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank are respectively connected with an ozone outlet pipe of an ozone generator;
and a residual sludge discharge port of the MBR membrane tank is connected back to the anoxic tank through a sludge return pipe.
2. A fecal sewage treatment system applied to scenic spots according to claim 1 wherein the fecal slag filtering device is composed of a coarse grid and a fine grid arranged in sequence;
the rear end of the coarse grating is provided with a coarse manure residue outlet;
and the rear end of the fine grid is provided with a fine manure discharge port.
3. A fecal sewage treatment system applied in scenic spots according to claim 2 wherein the gaps of the bars of the coarse grating are 10-40 mm;
the gaps between the bars of the fine grid are 3-10 mm.
4. A fecal sewage treatment system applied to scenic spots according to claim 1 wherein stirrers are arranged in the inlet adjusting tank and the sludge storage tank;
the anaerobic tank adopts any one of an upflow anaerobic tank, a contact anaerobic tank and an anaerobic fluidized bed;
the anoxic tank adopts a completely mixed anoxic tank, and a stirrer or a flow impeller is arranged in the anoxic tank;
the aerobic tank adopts a biomembrane process aerobic tank or an activated sludge process aerobic tank, and aeration devices are arranged at the bottom in the aerobic tank;
the MBR tank is arranged independently or is combined with the aerobic tank and is positioned at the rear end of the aerobic tank; the membrane cleaning device is characterized in that a membrane frame is arranged in the MBR tank, the membrane module is arranged on the membrane frame, an aeration device is arranged below the membrane module, a production tank and a clean water tank are respectively arranged at the rear end of the membrane module, and a membrane cleaning mechanism is arranged in the MBR tank.
5. A fecal sewage treatment system for scenic spots according to any of the claims 1 to 4 wherein the heterogeneous ozone catalytic oxidation tank comprises: the device comprises a reaction tank, a catalyst support frame, a first water distribution mechanism and a first gas distribution mechanism;
the catalyst support frame is arranged in the middle of the reaction tank, and the porous catalyst loaded with the metal active component is filled in the catalyst support frame;
a first water distribution mechanism is arranged in the reaction tank above the catalyst support frame and is connected with a water inlet pipe of the reaction tank;
the first gas distribution mechanism is arranged at the bottom in the reaction tank below the catalyst support frame and is connected with an ozone outlet pipe of the ozone generator;
the BAF pool includes: the tank body is internally provided with a filler, a second water distribution mechanism and a second gas distribution mechanism;
the second water distribution mechanism is connected with a water inlet pipe of the BAF pool;
the back washing mechanism and the filler are correspondingly arranged in the tank body, and the back washing mechanism is respectively connected with the fan and the water pump;
and the second gas distribution mechanism is connected with the aeration system and used for providing oxygen required by the reaction for the BAF pool and keeping a certain dissolved oxygen concentration.
6. A fecal sewage treatment system for scenic spots according to claim 5,
the porous catalyst loaded with the metal active component adopts an active carbon-based catalyst or an alumina-based catalyst loaded with the active metal component;
the filler in the BAF tank body adopts ceramsite or activated carbon.
7. A fecal sewage treatment system for scenic spots according to any of the claims 1 to 4 wherein the UV ozone catalytic oxidation tank comprises: the device comprises a reaction tank, a plurality of ultraviolet lamp tubes, an ultraviolet control module, a third water distribution mechanism and a third gas distribution mechanism; wherein the content of the first and second substances,
a plurality of ultraviolet lamp tubes are uniformly arranged in the reaction tank, and each ultraviolet lamp tube is electrically connected with the ultraviolet control module;
the third water distribution mechanism is connected with a water inlet pipe of the reaction tank;
and the third gas distribution mechanism is connected with an ozone outlet pipe of the ozone generator.
8. A method for treating fecal sewage waste water applied to scenic spots, which comprises the steps of:
after the excrement wastewater of toilets in tourist attractions respectively flows into septic tanks in the scenic spots, the excrement wastewater sequentially enters an excrement residue filtering device, a water inlet adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR (membrane bioreactor) membrane tank, a heterogeneous ozone catalytic oxidation tank, a BAF (bag aerated filter) tank and an ultraviolet ozone catalytic oxidation tank from the septic tanks in the scenic spots for treatment, and air is respectively introduced into the aerobic tank, the MBR membrane tank and the BAF tank for aeration to carry out biochemical reaction in the treatment process; respectively introducing ozone gas into the heterogeneous ozone catalytic oxidation tank and the ultraviolet ozone catalytic oxidation tank to perform catalytic oxidation reaction;
the treated effluent passes through a standard discharge water outlet of the ultraviolet ozone catalytic oxidation tank and is discharged or recycled after reaching the standard.
9. A method as claimed in claim 8, wherein the volume ratio of air to feed water fed into the aerobic tank is: 0.5 to 10;
the volume ratio of air and inlet water fed into the MBR membrane tank is as follows: 0.5 to 8;
the volume ratio of air and inlet water put into the BAF pool is as follows: 0.5 to 5;
adding 10-100 mg of ozone per liter of wastewater into the heterogeneous ozone catalytic oxidation tank;
the adding amount of ozone introduced into the ultraviolet ozone catalytic oxidation tank is 10-50 mg of ozone per L of wastewater;
the hydraulic retention time of the anaerobic tank is 2-10 h;
the hydraulic retention time of the anoxic pond is 2-10 h, and the sludge concentration is 5000-10000 mg/L;
the hydraulic retention time of the aerobic tank is 5-15 h, the sludge concentration is 5000-15000 mg/L, and the dissolved oxygen concentration is 1-5 mg/L;
the membrane flux of the membrane component of the MBR membrane tank is 10-18L/m2H, transmembrane pressure difference ranges from 5 kPa to 50kPa, and the maintenance cleaning period of sodium hypochlorite ranges from 5 days to 20 days;
the hydraulic retention time of the heterogeneous ozone catalytic oxidation tank is 20-120 min;
the hydraulic retention time of the BAF pool is 1-3 h;
the hydraulic retention time of the ultraviolet ozone catalytic oxidation tank is 10-60 min, and the power of an ultraviolet lamp is 0.3-4 kW/m3And (4) waste water.
10. The method for treating fecal sewage waste water applied to scenic spots according to claim 8 or 9,
the adding amount of the catalyst added into the heterogeneous ozone catalytic oxidation tank is 20-50% of the effective volume of the reaction tank of the heterogeneous ozone catalytic oxidation tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108686A (en) * | 2022-07-29 | 2022-09-27 | 苏州富淼膜科技有限公司 | Treatment method of refractory organic wastewater |
| CN116462373A (en) * | 2023-05-25 | 2023-07-21 | 长江生态环保集团有限公司 | Emergency treatment method for pollution load of composite sewage treatment plant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776760A (en) * | 2016-04-20 | 2016-07-20 | 北京桑德环境工程有限公司 | Advanced treatment system and method for crushed coal pressurized gasification waste water |
| CN110183052A (en) * | 2019-06-17 | 2019-08-30 | 北京中科国润环保科技有限公司 | A kind of waste waste water treatment system and method |
| CN111268872A (en) * | 2020-04-02 | 2020-06-12 | 安徽华骐环保科技股份有限公司 | Pesticide wastewater treatment process and treatment device thereof |
| CN113003899A (en) * | 2021-04-28 | 2021-06-22 | 沈阳大学 | Method for treating rhodiola rosea pharmaceutical wastewater |
| WO2021144776A1 (en) * | 2020-01-17 | 2021-07-22 | Alpha Bioenergy Ltd | Method and system for biologically treating highly concentrated wastewater |
-
2021
- 2021-12-07 CN CN202111485854.XA patent/CN114315012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776760A (en) * | 2016-04-20 | 2016-07-20 | 北京桑德环境工程有限公司 | Advanced treatment system and method for crushed coal pressurized gasification waste water |
| CN110183052A (en) * | 2019-06-17 | 2019-08-30 | 北京中科国润环保科技有限公司 | A kind of waste waste water treatment system and method |
| WO2021144776A1 (en) * | 2020-01-17 | 2021-07-22 | Alpha Bioenergy Ltd | Method and system for biologically treating highly concentrated wastewater |
| CN111268872A (en) * | 2020-04-02 | 2020-06-12 | 安徽华骐环保科技股份有限公司 | Pesticide wastewater treatment process and treatment device thereof |
| CN113003899A (en) * | 2021-04-28 | 2021-06-22 | 沈阳大学 | Method for treating rhodiola rosea pharmaceutical wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 曾郴林: "《微电解法处理难降解有机废水的理论与实例分析》", 31 October 2017, 中国环境出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108686A (en) * | 2022-07-29 | 2022-09-27 | 苏州富淼膜科技有限公司 | Treatment method of refractory organic wastewater |
| CN116462373A (en) * | 2023-05-25 | 2023-07-21 | 长江生态环保集团有限公司 | Emergency treatment method for pollution load of composite sewage treatment plant |
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