CN105366876A - Urban industrial sewage treatment system - Google Patents
Urban industrial sewage treatment system Download PDFInfo
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- CN105366876A CN105366876A CN201510616629.3A CN201510616629A CN105366876A CN 105366876 A CN105366876 A CN 105366876A CN 201510616629 A CN201510616629 A CN 201510616629A CN 105366876 A CN105366876 A CN 105366876A
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Abstract
The invention discloses an urban industrial sewage treatment system which comprises a food industrial sewage pretreatment line, an industrial inorganic sewage pretreatment line and an industrial organic sewage pretreatment line which are connected in parallel. The food industrial sewage pretreatment line, the industrial inorganic sewage pretreatment line and the industrial organic sewage pretreatment line intersect with a total treatment line. The food industrial sewage pretreatment line comprises a first food filtering basin, a first sedimentation basin, a second food filtering basin and a second food sedimentation basin which are connected in sequence. The industrial inorganic sewage pretreatment line comprises a first inorganic filtering basin, an acid-base basin, an oxidation basin, an inorganic sedimentation basin, a second inorganic filtering basin and a membrane filtering basin which are connected in sequence. The industrial organic sewage pretreatment line comprises an organic filtering basin and an extraction basin which are connected in sequence. The total treatment line comprises an anaerobic basin, an aerobic basin, a wet land, a detection basin and an ultraviolet sterilization basin which are connected in sequence.
Description
Technical field
The present invention relates to a kind of Sewage treatment systems, particularly a kind of urban industry Sewage treatment systems.
Background technology
In the last few years, the rate of economic development in China city is relatively very fast, produce in city and life and the sewage quantity that produces also increasing gradually, compared with developed countries, China's treatment rate of domestic sewage is also not high, and technique need perfect, manages also relatively backward, on average just have a sewage work about every 1,500,000 people, and there are construction of wastewater treatment plant effective investment utilization ratio and the process water rate problems such as low up to standard.Wastewater treatment in China facility is also very backward relative to developed country.
In prior art, the technique of Industrial Waste Water Treatments is comparatively single, main employing activated sludge process or chemical process, and the impact of activated sludge process on environment is less, but the effect removed is not so good, and heavy metal etc. are residual higher; The removal effect of chemical process is better, but comparatively large on the impact of environment, easily causes secondary pollution.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, provides one can have high clearance, meets city, various places needs, can process the urban industry Sewage treatment systems of all kinds of sewage extensively, efficiently.
The technical solution used in the present invention is as follows:
Urban industry Sewage treatment systems of the present invention, comprise foodstuffs industry sewage disinfection treatment route in parallel, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route, described foodstuffs industry sewage disinfection treatment route, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route are intersected in and always process route; Described foodstuffs industry sewage disinfection treatment route comprises the food filtering basin one be linked in sequence, food settling tank one, food filtering basin two and food settling tank two; Described industrial inorganic sewage disinfection treatment route comprises the inorganic filter pond one be linked in sequence, soda acid pond, oxidation pond, inorganic precipitation pond, inorganic filter pond two and membrane filtration pond; Described industrial organic sewage pre-treatment route comprises the organic filter pond and abstraction pool that are linked in sequence; Described total process route comprises the anaerobic pond be linked in sequence, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond; Described industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond, and described WASTEWATER TREATMENT OF FOOD PROCESSING INDUSTRY route and industrial inorganic process route are intersected in anaerobic pond.
Owing to have employed technique scheme, the contaminant component of dissimilar industrial sewage is different, content is different, industrial sewage can be divided into foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage, contaminant component content in foodstuffs industry sewage is identical with the cardinal principle of foodstuffs industry sewage, be mainly N, P pollutent; In industrial inorganic sewage, heavy metal content is higher, and in organic sewage, poisonous and hazardous organic constituents content is higher; By foodstuffs industry sewage and industrial sewage categorised collection, different pretreatment processs is carried out for pollutant components different separately, after different pollutant removal is fallen, focusing on total pollutent N, P, improve processing efficiency, there is adaptive faculty widely, all sewage that may occur in productive life process in city can be tackled.
Urban industry Sewage treatment systems of the present invention, be provided with nitrifier and polyP bacteria in described anaerobic pond, be provided with denitrifying bacteria in described Aerobic Pond, in described Aerobic Pond, water outlet is provided with proofing unit, can detect nitrogen content and phosphorus content in water, described Aerobic Pond is provided with the one-way channel to anaerobic pond; The plant of described wetland plantation comprises typha angustifolia, the cattail of 19 ~ 22%, the reed of 32 ~ 40% and the chlorella of 16 ~ 23% of 26 ~ 31%.
Owing to have employed technique scheme, can effectively get rid of containing P pollutent under the effect of polyP bacteria, can effectively get rid of containing N pollutent under the effect of nitrifier and denitrifying bacteria, in Aerobic Pond, water outlet is provided with proofing unit simultaneously, nitrogen content and the phosphorus content rear process just carrying out next step up to standard can be detected in guarantee, if not up to standard, return the process continuing this step, being circularly set like this, can repeatedly process efficiently, until the qualified process just carrying out next step of content, make pollutant load through the water outlet of anaerobic pond and Aerobic Pond process all in a stable scope, thus make next step process can not cause the reduction of final treatment effect because content exceedes bearing capacity, ensure the stability for the treatment of system.Plant in wetland can sponge the pollutent such as N, P in sewage effectively.Get rid of N, P pollutent in sewage by the biological process such as nitrifier, wetland, there is eco-friendly feature, can not damage surrounding environment, more can not cause secondary pollution.
Urban industry Sewage treatment systems of the present invention, described food settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate; Described food settling tank two is provided with the one-way channel to crossing food filter tank one.
Owing to adopting technique scheme, settling tank two pond water outlet is provided with proofing unit, the solid content rear process just carrying out next step up to standard can be detected in guarantee, if not up to standard, return the process continuing this step, being circularly set like this, can repeatedly process efficiently, until the qualified process just carrying out next step of content, make pollutant load through the water outlet of filtering basin and settling tank process all in a stable scope, thus make next step process can not cause the reduction of final treatment effect because content exceedes bearing capacity, ensure the stability for the treatment of system
Urban industry Sewage treatment systems of the present invention, is provided with aperture plate in described food filtering basin one, and the grid gap length of described aperture plate is 5 ~ 8cm; Be provided with flocculation agent in described food settling tank one, be provided with separation filter plate in described food settling tank one, described separation filter plate can by solid-liquid separation; Be provided with thermostat in described food settling tank one, can holding temperature constant in the scope of 25 ~ 28 DEG C, described flocculation agent is that the ZnCl2 of 1:1 and Xylo-Mucine form by mol ratio, and the concentration of described flocculation agent is 25ppm; Be provided with aperture plate in described food filtering basin two, the grid gap length of described aperture plate is 0.3 ~ 0.8cm; Be provided with separation filter plate in described food settling tank two, described separation filter plate can by solid-liquid separation, and described food settling tank two is connected with fertilizer producing system.
Owing to have employed technique scheme, oarse-grained pollutent is disposed as plastics bag, paper etc. through filtering basin one, in settling tank one, add flocculation agent can get rid of solid pollutant in sewage in a large number, comprise swill, mineral compound etc., play a role in the temperature range of thermostat guarantee flocculation agent the best, thus obtain best clearance, the aperture plate of filtering basin two can get rid of less solid particulate, and the material such as the flock produced under flocculation agent effect, be separated filter plate in settling tank two and can get rid of more short grained solid matter, sewage is after the filtration of first twice, larger solid is all removed, now solid particulate is less, obstruction can not be caused to the aperture being separated filter plate, thus cause the reduction of separation efficiency, the solid matter be separated through settling tank two contains abundant N, P, the chemical elements such as S, the good starting material manufacturing fertilizer, solid matter being delivered to fertilizer producing system can farthest utilization of waste material.
Urban industry Sewage treatment systems of the present invention, the outlet in described inorganic filter pond two is provided with proofing unit, can detect in filtrate containing heavy metal amount; Described inorganic filter pond two is provided with the one-way channel to oxidation pond.
Owing to have employed technique scheme, inorganic filter pond two water outlet is provided with proofing unit, can detect containing the rear process just carrying out next step up to standard of heavy metal amount in guarantee, if not up to standard, return the process continuing this step, being circularly set like this, can repeatedly process efficiently, until the qualified process just carrying out next step of content, make the pollutant load of treated water outlet all in a stable scope, thus make next step process can not cause the reduction of final treatment effect because content exceedes bearing capacity, ensure the stability for the treatment of system
Urban industry Sewage treatment systems of the present invention, described inorganic filter pond one is provided with aperture plate, and the grid gap length of described aperture plate is 5 ~ 8cm; Ferrite process is adopted, n (Fe in described ferrite process in described oxidation pond
2+)/n (M
2+)=15; Be provided with inorganic flocculation agent in described inorganic precipitation pond, described inorganic flocculation agent is the chitosan of 1:1:0.4:1.2 by mol ratio, Na
2b
4o
710H
2o, MgSO
47H
2o, AlCl
36H
2o forms, and the concentration of described inorganic flocculation agent is 25ppm; Be provided with filter screen in described inorganic filter pond two, the grid gap length of described filter screen is 0.05 ~ 0.08cm; Import and the outlet in described membrane filtration pond are equipped with pressure regulating pump, and described membrane filtration pond is provided with thermostat, and energy holding temperature is constant in the scope of 51 ~ 55 DEG C, is provided with 50nm multi-channel industrial inorganic ceramic film in described membrane filtration pond.
Owing to have employed technique scheme, inorganic flocculation agent can get rid of most heavy-metal pollution thing effectively, can be got rid of the ion of 99% by membrane filtration film, has efficient, stable feature to the process of industrial inorganic polluted water.
Urban industry Sewage treatment systems of the present invention, is provided with aperture plate in described organic filter pond, and the grid gap length of described aperture plate is 5 ~ 8cm; Adopt sequential extractions in described abstraction pool, extraction agent is respectively: sherwood oil, ethyl acetate: sherwood oil=1:5, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate; Described abstraction pool is provided with separation system, organic layer can be separated with water layer; Described abstraction pool is connected with fertilizer producing system.
Owing to have employed technique scheme, organism in industry organically-polluted water can be removed substantially through sequential extractions, extraction agent reclaims can recycle, add the utilization ratio of resource, reduce cost, meanwhile, the organism extracted can become the raw material of composting after treatment, and the organism therefore extracted delivers to fertilizer producing system can utilization of waste material to greatest extent.
Urban industry Sewage treatment systems of the present invention, described detection cell is provided with the individual event passage leading to food settling tank two, soda acid pond, membrane filtration pond, abstraction pool, anaerobic pond and wetland respectively; Be provided with proofing unit in described detection cell, the content of the solid particulate of size >0.3cm in water can be detected, containing heavy metal amount, carbon content, nitrogen content and phosphorus content.
Owing to have employed technique scheme, the treatment effect of each step process can be judged by the detection of detection cell, when the process of a certain step is not up to standard, different return terminals is selected according to the content of pollutent, again process, thus each pollutant load is up to standard in the sewage that ensures finally to enter in ultraviolet sterilization pond, make treatment system can tackle all sewage that may occur in productive life process in city, the reduction for the treatment of effect can not be caused because a certain pollutant emission is excessive, ensure the stability for the treatment of system.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, rationally effectively arrange, pre-treatment is carried out to dissimilar sewage, thus ensure still can ensure good, stable treatment effect in different pollutant emission situations.
2, sectional type is provided with return-flow system, ensure that the pollutant load of the water outlet of staging treating is all in a stable scope, thus make next step process can not cause the reduction of final treatment effect because content exceedes bearing capacity, ensure the stability for the treatment of system.
3, the mode adopting physical treatment, chemical treatment and biological treatment to combine, process targetedly, environmental friendliness, can not impact the ecosystem of surrounding, method simultaneously in conjunction with process can not only get rid of Conventional pollution, improve the clearance of various pollutent simultaneously, stop secondary pollution.
Accompanying drawing explanation
Fig. 1 is urban industry Sewage treatment systems schematic diagram;
Fig. 2 is the graphic representation that temperature affects clearance;
Fig. 3 is the graphic representation that pH value affects clearance;
Fig. 4 is the graphic representation that concentration affects clearance;
Fig. 5 is the graphic representation that membrane pore size size affects clearance;
Fig. 6 is the graphic representation of time of ultraviolet irradiation on clearance impacts such as germ, parasite, viruses
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make the object of invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, urban industry Sewage treatment systems, is divided into foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection by industrial sewage; The industrial sewage of separate collection is respectively through foodstuffs industry sewage disinfection treatment route, and industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route carry out pre-treatment; Described foodstuffs industry sewage disinfection treatment route, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route are intersected in and always process route, total process route comprise be linked in sequence anaerobic pond, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond.
Foodstuffs industry sewage disinfection treatment route comprises the filtering basin one be linked in sequence, settling tank one, filtering basin two and settling tank two, aperture plate is provided with in filtering basin one, in filtering basin one, the grid gap length of aperture plate is 5cm, separation filter plate is provided with in settling tank one, being separated filter plate can by solid-liquid separation, aperture plate is provided with in filtering basin two, in filtering basin two, the grid gap length of aperture plate is 0.3cm, and settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate, settling tank two is provided with the one-way channel to filtering basin one, and settling tank two is connected with fertilizer producing system; Foodstuffs industry effluent stream is through the aperture plate in filter tank one, filter out the particle being greater than 5cm, liquid stream is to settling tank one, thermostatted is provided with in settling tank one, thermostatted keeps temperature in settling tank one to maintain in the scope of 25 DEG C, in the sewage in settling tank one, add the flocculation agent that concentration is 25ppm, leave standstill 2d, flocculation agent is the ZnCl of 1:1 by mol ratio
2form with Xylo-Mucine, COD (chemical oxygen demand (COD)) material in water can be got rid of in a large number, comprising reducing substances as, nitrite, sulfide, ferrous salt, washing composition etc., the graphic representation of the temperature of flocculation agent, concentration, mol ratio and removal effect as shown in Figures 2 to 4, separation filter plate in settling tank one is by solid, floss etc. and liquid separation, liquid stream after separation is to the aperture plate of filtering basin two, filter out the particle being greater than 0.3cm, liquid stream is to settling tank two, after leaving standstill 2d, solid and liquid separation are opened; Detection system in settling tank two detects the content being greater than the particulate matter of 0.3cm in the liquid after settling tank two is separated, and as granule content >0.2ppm, liquid flows back into filtering basin one through one-way channel; As granule content <0.2ppm, liquid stream is to anaerobic pond; The solid matter be separated through settling tank two is transported to fertilizer producing system, carries out the processing and fabricating of fertilizer.
Industrial inorganic sewage disinfection treatment route comprises the inorganic filter pond one be linked in sequence, soda acid pond, oxidation pond, inorganic precipitation pond, inorganic filter pond two and membrane filtration pond.In inorganic filter pond one, the grid gap length of aperture plate is 5 ~ 8cm, and industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, and after filtering out the particle being greater than 5 ~ 8cm, liquid stream is to soda acid pond.With Ca (OH) in soda acid pond
2liquid is made as saturated solution, and saturated solution flow to oxidation pond, through ferrite process in oxidation pond, at n (Fe
2+)/n (M
2+after removing heavy metal ion under the condition of)=15, liquid stream is to inorganic precipitation pond.Sewage is when inorganic precipitation pond, and in pond, add the inorganic flocculation agent that concentration is 25ppm, inorganic flocculation agent is the chitosan of 1:1:0.4:1.2 by mol ratio, Na
2b
4o
710H
2o, MgSO
47H
2o, AlCl
36H
2o forms, leave standstill 2 ~ 3d, this inorganic flocculation agent can get rid of a large amount of heavy metal ion, sewage is in inorganic precipitation pond, after inorganic flocculation agent process, after getting rid of a large amount of heavy metal ion, liquid stream is to inorganic filter pond two, filter screen is provided with in inorganic filter pond two, the grid gap length of filter screen is 0.05cm, liquid is through the filtration of grid, filter out the particle being greater than 0.05cm, the outlet in inorganic filter pond two is provided with proofing unit, can detect in filtrate containing heavy metal amount, inorganic filter pond two is provided with the one-way channel to oxidation pond, proofing unit detects in the liquid after inorganic filter pond two is filtered containing heavy metal amount, when containing heavy metal amount >3ppm, liquid flows back to oxidation pond, when containing heavy metal amount <3ppm, liquid stream is to membrane filtration pond.
Import and the outlet in membrane filtration pond are equipped with pressure regulating pump, sewage is through the pressure regulating pump of membrane filtration pond import, pressure is adjusted to 0.32MPa, membrane filtration pond is provided with thermostat, energy holding temperature is constant in the scope of 51 DEG C, 50nm multi-channel industrial inorganic ceramic film is provided with in membrane filtration pond, sewage can remove heavy metal ion compound and polymkeric substance further after inorganic ceramic film, in the pore size of inorganic ceramic film and pond the impact of temperature on clearance filter as shown in Figure 5 after the pressure regulating pump that exports through membrane filtration pond of liquid, pressure is adjusted to 0.10MPa, liquid stream is to anaerobic pond.
Industrial organic sewage pre-treatment route comprises the organic filter pond and abstraction pool that are linked in sequence, and industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond.Organic filter is provided with aperture plate in pond, and in organic filter pond, the grid gap length of aperture plate is 5cm, the aperture plate of sewage in organic filter pond, filters the particle being greater than 5cm.Effluent stream after filtration is to abstraction pool, through sequential extractions in abstraction pool, extraction agent is adopted to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and abstraction pool is provided with separation system, organic layer can be separated with water layer, after separating, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond.
Be provided with nitrifier and polyP bacteria in anaerobic pond, sewage is in anaerobic pond, and under the effect of nitrifier and polyP bacteria, leave standstill 3d, ammonia oxidation can be nitrous acid by nitrifier, and retelling nitrite-oxidizing is nitric acid, and reaction formula is as follows:
2NH
4 ++3O
2→2NO
2 -+4H
++2H
2O
2NO
2 -+O
2→2NO
3 -
PolyP bacteria be gone out after phosphorus can being assembled from water, through the effluent stream of nitrifier and polyP bacteria process to Aerobic Pond.Be provided with denitrifying bacteria in Aerobic Pond, ammonolysis craft can be become nitrogen by denitrifying bacteria, then discharges back in air, and reaction formula is as follows:
2NO
3 ?+10e
?+12H
+→N
2+6H
2O
In Aerobic Pond, water outlet is provided with proofing unit, nitrogen content and phosphorus content in water can be detected, Aerobic Pond is provided with the one-way channel to anaerobic pond, proofing unit detects nitrogen content and phosphorus content in the sewage of Aerobic Pond process, as nitrogen content >8ppm, during phosphorus content >0.3ppm, liquid flows back into anaerobic pond by one-way channel; As nitrogen content <8ppm, during phosphorus content <0.3ppm, liquid stream is to wetland.
The plant of wetland plantation comprises the typha angustifolia of 26%, the cattail of 22%, the reed of 32% and the chlorella of 20%, these plants all can effectively remove carbonaceous material in water, nitrogenous substances and phosphorus containg substances, sewage is under the effect of wetland, and process 10d, flow to detection cell.
Detection cell is provided with the individual event passage leading to settling tank two, soda acid pond, membrane filtration pond, abstraction pool, anaerobic pond and wetland respectively; Be provided with proofing unit in described detection cell, the content of the solid particulate of size >0.3cm in water can be detected, containing heavy metal amount, carbon content, nitrogen content and phosphorus content.Through the sewage of multi step strategy at the respectively content of the solid particulate of size >0.3cm in water body after check processing in detection cell, containing heavy metal amount, carbon content, nitrogen content and phosphorus content; As the content >0.2ppm of solid particulate, liquid flows back to filtering basin one; When containing heavy metal amount >3ppm, liquid stream is back to soda acid pond, and when 3ppm> is containing heavy metal amount >0.05ppm, liquid stream is back to membrane filtration Chi Chi; As carbon content >0.02ppm, liquid stream is back to abstraction pool, and as 0.02ppm> carbon content >0.003ppm, liquid stream is back to membrane filtration pond; As nitrogen content >8ppm or phosphorus content >0.3ppm, liquid stream is back to anaerobic pond; As 8ppm> nitrogen content >0.1ppm, or during 0.3ppm> phosphorus content >0.1ppm, liquid stream is back to wetland; As solid content <0.2ppm, containing heavy metal amount <0.05ppm, during carbon content <0.02ppm, nitrogen content <0.1ppm, during phosphorus content <0.1ppm, liquid stream is to ultraviolet sterilization pond.
Ultraviolet sterilization pond, can send wavelength 200nm, dosage 13000 μ W.s/cm
2ultraviolet waves in scope.Water after multi step strategy at wavelength 200nm, dosage 13000 μ W.s/cm
2scope in, process 40s after can eliminate 99% germ, parasite, virus etc., the time, the water after multi step strategy can discharge to the influence curve of clearance as shown in Figure 6.
Embodiment 2
As shown in Figure 1, urban industry Sewage treatment systems, is divided into foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection by industrial sewage; The industrial sewage of separate collection is respectively through foodstuffs industry sewage disinfection treatment route, and industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route carry out pre-treatment; Described foodstuffs industry sewage disinfection treatment route, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route are intersected in and always process route, total process route comprise be linked in sequence anaerobic pond, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond.
Foodstuffs industry sewage disinfection treatment route comprises the filtering basin one be linked in sequence, settling tank one, filtering basin two and settling tank two, aperture plate is provided with in filtering basin one, in filtering basin one, the grid gap length of aperture plate is 8cm, separation filter plate is provided with in settling tank one, being separated filter plate can by solid-liquid separation, aperture plate is provided with in filtering basin two, in filtering basin two, the grid gap length of aperture plate is 0.8cm, and settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate, settling tank two is provided with the one-way channel to filtering basin one, and settling tank two is connected with fertilizer producing system; Foodstuffs industry effluent stream is through the aperture plate in filter tank one, filter out the particle being greater than 8cm, liquid stream is to settling tank one, thermostatted is provided with in settling tank one, thermostatted keeps temperature in settling tank one to maintain in the scope of 28 DEG C, in the sewage in settling tank one, add the flocculation agent that concentration is 25ppm, leave standstill 3d, flocculation agent is the ZnCl of 1:1 by mol ratio
2form with Xylo-Mucine, COD (chemical oxygen demand (COD)) material in water can be got rid of in a large number, comprising reducing substances as, nitrite, sulfide, ferrous salt, washing composition etc., the separation filter plate in settling tank one is by solid, floss etc. and liquid separation, and the liquid stream after separation is to the aperture plate of filtering basin two, filter out the particle being greater than 0.8cm, solid and liquid separation, to settling tank two, after leaving standstill 3d, are opened by liquid stream; Detection system in settling tank two detects the content being greater than the particulate matter of 0.3cm in the liquid after settling tank two is separated, and as granule content >0.2ppm, liquid flows back into filtering basin one through one-way channel; As granule content <0.2ppm, liquid stream is to anaerobic pond; The solid matter be separated through settling tank two is transported to fertilizer producing system, carries out the processing and fabricating of fertilizer.
Industrial inorganic sewage disinfection treatment route comprises the inorganic filter pond one be linked in sequence, soda acid pond, oxidation pond, inorganic precipitation pond, inorganic filter pond two and membrane filtration pond.In inorganic filter pond one, the grid gap length of aperture plate is 8cm, and industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, and after filtering out the particle being greater than 8cm, liquid stream is to soda acid pond.With Ca (OH) in soda acid pond
2liquid is made as saturated solution, and saturated solution flow to oxidation pond, through ferrite process in oxidation pond, at n (Fe
2+)/n (M
2+after removing heavy metal ion under the condition of)=15, liquid stream is to inorganic precipitation pond.Sewage is when inorganic precipitation pond, and in pond, add the inorganic flocculation agent that concentration is 25ppm, inorganic flocculation agent is the chitosan of 1:1:0.4:1.2 by mol ratio, Na
2b
4o
710H
2o, MgSO
47H
2o, AlCl
36H
2o forms, leave standstill 3d, this inorganic flocculation agent can get rid of a large amount of heavy metal ion, sewage is in inorganic precipitation pond, after inorganic flocculation agent process, after getting rid of a large amount of heavy metal ion, liquid stream is to inorganic filter pond two, filter screen is provided with in inorganic filter pond two, the grid gap length of filter screen is 0.08cm, liquid is through the filtration of grid, filter out the particle being greater than 0.08cm, the outlet in inorganic filter pond two is provided with proofing unit, can detect in filtrate containing heavy metal amount, inorganic filter pond two is provided with the one-way channel to oxidation pond, proofing unit detects in the liquid after inorganic filter pond two is filtered containing heavy metal amount, when containing heavy metal amount >3ppm, liquid flows back to oxidation pond, when containing heavy metal amount <3ppm, liquid stream is to membrane filtration pond.
Import and the outlet in membrane filtration pond are equipped with pressure regulating pump, sewage is through the pressure regulating pump of membrane filtration pond import, pressure is adjusted to 0.32MPa, membrane filtration pond is provided with thermostat, and energy holding temperature is constant in the scope of 55 DEG C, is provided with 50nm multi-channel industrial inorganic ceramic film in membrane filtration pond, sewage can remove heavy metal ion compound and polymkeric substance further after inorganic ceramic film, the pressure regulating pump that liquid after filtration exports through membrane filtration pond, pressure is adjusted to 0.10MPa, and liquid stream is to anaerobic pond.
Industrial organic sewage pre-treatment route comprises the organic filter pond and abstraction pool that are linked in sequence, and industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond.Organic filter is provided with aperture plate in pond, and in organic filter pond, the grid gap length of aperture plate is 8cm, the aperture plate of sewage in organic filter pond, filters the particle being greater than 8cm.Effluent stream after filtration is to abstraction pool, through sequential extractions in abstraction pool, extraction agent is adopted to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and abstraction pool is provided with separation system, organic layer can be separated with water layer, after separating, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond.
Be provided with nitrifier and polyP bacteria in anaerobic pond, sewage is in anaerobic pond, and under the effect of nitrifier and polyP bacteria, leave standstill 5d, ammonia oxidation can be nitrous acid by nitrifier, and retelling nitrite-oxidizing is nitric acid, and reaction formula is as follows:
2NH
4 ++3O
2→2NO
2 -+4H
++2H
2O
2NO
2 -+O
2→2NO
3 -
PolyP bacteria be gone out after phosphorus can being assembled from water, through the effluent stream of nitrifier and polyP bacteria process to Aerobic Pond.Be provided with denitrifying bacteria in Aerobic Pond, ammonolysis craft can be become nitrogen by denitrifying bacteria, then discharges back in air, and reaction formula is as follows:
2NO
3 ?+10e
?+12H
+→N
2+6H
2O
In Aerobic Pond, water outlet is provided with proofing unit, nitrogen content and phosphorus content in water can be detected, Aerobic Pond is provided with the one-way channel to anaerobic pond, proofing unit detects nitrogen content and phosphorus content in the sewage of Aerobic Pond process, as nitrogen content >8ppm, during phosphorus content >0.3ppm, liquid flows back into anaerobic pond by one-way channel; As nitrogen content <8ppm, during phosphorus content <0.3ppm, liquid stream is to wetland.
The plant of wetland plantation comprises the typha angustifolia of 26%, the cattail of 19%, the reed of 32% and the chlorella of 23%, these plants all can effectively remove carbonaceous material in water, nitrogenous substances and phosphorus containg substances, sewage is under the effect of wetland, and process 15d, flow to detection cell.
Detection cell is provided with the individual event passage leading to settling tank two, soda acid pond, membrane filtration pond, abstraction pool, anaerobic pond and wetland respectively; Be provided with proofing unit in described detection cell, the content of the solid particulate of size >0.3cm in water can be detected, containing heavy metal amount, carbon content, nitrogen content and phosphorus content.Through the sewage of multi step strategy at the respectively content of the solid particulate of size >0.3cm in water body after check processing in detection cell, containing heavy metal amount, carbon content, nitrogen content and phosphorus content; As the content >0.2ppm of solid particulate, liquid flows back to filtering basin one; When containing heavy metal amount >3ppm, liquid stream is back to soda acid pond, and when 3ppm> is containing heavy metal amount >0.05ppm, liquid stream is back to membrane filtration Chi Chi; As carbon content >0.02ppm, liquid stream is back to abstraction pool, and as 0.02ppm> carbon content >0.003ppm, liquid stream is back to membrane filtration pond; As nitrogen content >8ppm or phosphorus content >0.3ppm, liquid stream is back to anaerobic pond; As 8ppm> nitrogen content >0.1ppm, or during 0.3ppm> phosphorus content >0.1ppm, liquid stream is back to wetland; As solid content <0.2ppm, containing heavy metal amount <0.05ppm, during carbon content <0.02ppm, nitrogen content <0.1ppm, during phosphorus content <0.1ppm, liquid stream is to ultraviolet sterilization pond.
Ultraviolet sterilization pond, can send wavelength 275nm, dosage 15000 μ W.s/cm
2ultraviolet waves in scope.Water after multi step strategy at wavelength 275nm, dosage 15000 μ W.s/cm
2scope in, process 60s after can eliminate 99% germ, parasite, virus etc., the water after multi step strategy can discharge.
Embodiment 3
As shown in Figure 1, urban industry Sewage treatment systems, is divided into foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection by industrial sewage; The industrial sewage of separate collection is respectively through foodstuffs industry sewage disinfection treatment route, and industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route carry out pre-treatment; Described foodstuffs industry sewage disinfection treatment route, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route are intersected in and always process route, total process route comprise be linked in sequence anaerobic pond, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond.
Foodstuffs industry sewage disinfection treatment route comprises the filtering basin one be linked in sequence, settling tank one, filtering basin two and settling tank two, aperture plate is provided with in filtering basin one, in filtering basin one, the grid gap length of aperture plate is 7cm, separation filter plate is provided with in settling tank one, being separated filter plate can by solid-liquid separation, aperture plate is provided with in filtering basin two, in filtering basin two, the grid gap length of aperture plate is 0.5cm, and settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate, settling tank two is provided with the one-way channel to filtering basin one, and settling tank two is connected with fertilizer producing system; Foodstuffs industry effluent stream is through the aperture plate in filter tank one, filter out the particle being greater than 7cm, liquid stream is to settling tank one, thermostatted is provided with in settling tank one, thermostatted keeps temperature in settling tank one to maintain in the scope of 26 DEG C, in the sewage in settling tank one, add the flocculation agent that concentration is 25ppm, leave standstill 2.5d, flocculation agent is the ZnCl of 1:1 by mol ratio
2form with Xylo-Mucine, COD (chemical oxygen demand (COD)) material in water can be got rid of in a large number, comprising reducing substances as, nitrite, sulfide, ferrous salt, washing composition etc., the separation filter plate in settling tank one is by solid, floss etc. and liquid separation, and the liquid stream after separation is to the aperture plate of filtering basin two, filter out the particle being greater than 0.5cm, solid and liquid separation, to settling tank two, after leaving standstill 2.5d, are opened by liquid stream; Detection system in settling tank two detects the content being greater than the particulate matter of 0.3cm in the liquid after settling tank two is separated, and as granule content >0.2ppm, liquid flows back into filtering basin one through one-way channel; As granule content <0.2ppm, liquid stream is to anaerobic pond; The solid matter be separated through settling tank two is transported to fertilizer producing system, carries out the processing and fabricating of fertilizer.
Industrial inorganic sewage disinfection treatment route comprises the inorganic filter pond one be linked in sequence, soda acid pond, oxidation pond, inorganic precipitation pond, inorganic filter pond two and membrane filtration pond.In inorganic filter pond one, the grid gap length of aperture plate is 7cm, and industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, and after filtering out the particle being greater than 7cm, liquid stream is to soda acid pond.With Ca (OH) in soda acid pond
2liquid is made as saturated solution, and saturated solution flow to oxidation pond, through ferrite process in oxidation pond, at n (Fe
2+)/n (M
2+after removing heavy metal ion under the condition of)=15, liquid stream is to inorganic precipitation pond.Sewage is when inorganic precipitation pond, and in pond, add the inorganic flocculation agent that concentration is 25ppm, inorganic flocculation agent is the chitosan of 1:1:0.4:1.2 by mol ratio, Na
2b
4o
710H
2o, MgSO
47H
2o, AlCl
36H
2o forms, leave standstill 2.5d, this inorganic flocculation agent can get rid of a large amount of heavy metal ion, sewage is in inorganic precipitation pond, after inorganic flocculation agent process, after getting rid of a large amount of heavy metal ion, liquid stream is to inorganic filter pond two, filter screen is provided with in inorganic filter pond two, the grid gap length of filter screen is 0.07cm, liquid is through the filtration of grid, filter out the particle being greater than 0.07cm, the outlet in inorganic filter pond two is provided with proofing unit, can detect in filtrate containing heavy metal amount, inorganic filter pond two is provided with the one-way channel to oxidation pond, proofing unit detects in the liquid after inorganic filter pond two is filtered containing heavy metal amount, when containing heavy metal amount >3ppm, liquid flows back to oxidation pond, when containing heavy metal amount <3ppm, liquid stream is to membrane filtration pond.
Import and the outlet in membrane filtration pond are equipped with pressure regulating pump, sewage is through the pressure regulating pump of membrane filtration pond import, pressure is adjusted to 0.32MPa, membrane filtration pond is provided with thermostat, and energy holding temperature is constant in the scope of 53 DEG C, is provided with 50nm multi-channel industrial inorganic ceramic film in membrane filtration pond, sewage can remove heavy metal ion compound and polymkeric substance further after inorganic ceramic film, the pressure regulating pump that liquid after filtration exports through membrane filtration pond, pressure is adjusted to 0.10MPa, and liquid stream is to anaerobic pond.
Industrial organic sewage pre-treatment route comprises the organic filter pond and abstraction pool that are linked in sequence, and industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond.Organic filter is provided with aperture plate in pond, and in organic filter pond, the grid gap length of aperture plate is 7cm, the aperture plate of sewage in organic filter pond, filters the particle being greater than 7cm.Effluent stream after filtration is to abstraction pool, through sequential extractions in abstraction pool, extraction agent is adopted to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and abstraction pool is provided with separation system, organic layer can be separated with water layer, after separating, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond.
Be provided with nitrifier and polyP bacteria in anaerobic pond, sewage is in anaerobic pond, and under the effect of nitrifier and polyP bacteria, leave standstill 4d, ammonia oxidation can be nitrous acid by nitrifier, and retelling nitrite-oxidizing is nitric acid, and reaction formula is as follows:
2NH
4 ++3O
2→2NO
2 -+4H
++2H
2O
2NO
2 -+O
2→2NO
3 -
PolyP bacteria be gone out after phosphorus can being assembled from water, through the effluent stream of nitrifier and polyP bacteria process to Aerobic Pond.Be provided with denitrifying bacteria in Aerobic Pond, ammonolysis craft can be become nitrogen by denitrifying bacteria, then discharges back in air, and reaction formula is as follows:
2NO
3 ?+10e
?+12H
+→N
2+6H
2O
In Aerobic Pond, water outlet is provided with proofing unit, nitrogen content and phosphorus content in water can be detected, Aerobic Pond is provided with the one-way channel to anaerobic pond, proofing unit detects nitrogen content and phosphorus content in the sewage of Aerobic Pond process, as nitrogen content >8ppm, during phosphorus content >0.3ppm, liquid flows back into anaerobic pond by one-way channel; As nitrogen content <8ppm, during phosphorus content <0.3ppm, liquid stream is to wetland.
The plant of wetland plantation comprises the typha angustifolia of 31%, the cattail of 20%, the reed of 33% and the chlorella of 16%, these plants all can effectively remove carbonaceous material in water, nitrogenous substances and phosphorus containg substances, sewage is under the effect of wetland, and process 13d, flow to detection cell.
Detection cell is provided with the individual event passage leading to settling tank two, soda acid pond, membrane filtration pond, abstraction pool, anaerobic pond and wetland respectively; Be provided with proofing unit in described detection cell, the content of the solid particulate of size >0.3cm in water can be detected, containing heavy metal amount, carbon content, nitrogen content and phosphorus content.Through the sewage of multi step strategy at the respectively content of the solid particulate of size >0.3cm in water body after check processing in detection cell, containing heavy metal amount, carbon content, nitrogen content and phosphorus content; As the content >0.2ppm of solid particulate, liquid flows back to filtering basin one; When containing heavy metal amount >3ppm, liquid stream is back to soda acid pond, and when 3ppm> is containing heavy metal amount >0.05ppm, liquid stream is back to membrane filtration Chi Chi; As carbon content >0.02ppm, liquid stream is back to abstraction pool, and as 0.02ppm> carbon content >0.003ppm, liquid stream is back to membrane filtration pond; As nitrogen content >8ppm or phosphorus content >0.3ppm, liquid stream is back to anaerobic pond; As 8ppm> nitrogen content >0.1ppm, or during 0.3ppm> phosphorus content >0.1ppm, liquid stream is back to wetland; As solid content <0.2ppm, containing heavy metal amount <0.05ppm, during carbon content <0.02ppm, nitrogen content <0.1ppm, during phosphorus content <0.1ppm, liquid stream is to ultraviolet sterilization pond.
Ultraviolet sterilization pond, can send wavelength 255nm, dosage 14000 μ W.s/cm
2ultraviolet waves in scope.Water after multi step strategy at wavelength 255nm, dosage 14000 μ W.s/cm
2scope in, process 50s after can eliminate 99% germ, parasite, virus etc., the water after multi step strategy can discharge.
Embodiment 4
The plant of wetland plantation comprises typha angustifolia, the cattail of 21%, the reed of 33% and the chlorella of 16% of 30%.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. urban industry Sewage treatment systems, it is characterized in that comprising foodstuffs industry sewage disinfection treatment route in parallel, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route, described foodstuffs industry sewage disinfection treatment route, industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route are intersected in and always process route; Described foodstuffs industry sewage disinfection treatment route comprises the food filtering basin one be linked in sequence, food settling tank one, food filtering basin two and food settling tank two; Described industrial inorganic sewage disinfection treatment route comprises the inorganic filter pond one be linked in sequence, soda acid pond, oxidation pond, inorganic precipitation pond, inorganic filter pond two and membrane filtration pond; Described industrial organic sewage pre-treatment route comprises the organic filter pond and abstraction pool that are linked in sequence; Described total process route comprises the anaerobic pond be linked in sequence, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond; Described industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond, and described WASTEWATER TREATMENT OF FOOD PROCESSING INDUSTRY route and industrial inorganic process route are intersected in anaerobic pond.
2. urban industry Sewage treatment systems as claimed in claim 1, it is characterized in that: in described anaerobic pond, be provided with nitrifier and polyP bacteria, denitrifying bacteria is provided with in described Aerobic Pond, in described Aerobic Pond, water outlet is provided with proofing unit, can detect nitrogen content and phosphorus content in water, described Aerobic Pond is provided with the one-way channel to anaerobic pond; The plant of described wetland plantation comprises typha angustifolia, the cattail of 19 ~ 22%, the reed of 32 ~ 40% and the chlorella of 16 ~ 23% of 26 ~ 31%.
3. urban industry Sewage treatment systems as claimed in claim 1 or 2, is characterized in that: described food settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate; Described food settling tank two is provided with the one-way channel to crossing food filter tank one.
4. urban industry Sewage treatment systems as claimed in claim 3, it is characterized in that: be provided with aperture plate in described food filtering basin one, the grid gap length of described aperture plate is 5 ~ 8cm; Be provided with flocculation agent in described food settling tank one, be provided with separation filter plate in described food settling tank one, described separation filter plate can by solid-liquid separation; Be provided with thermostat in described food settling tank one, can holding temperature constant in the scope of 25 ~ 28 DEG C, described flocculation agent is that the ZnCl2 of 1:1 and Xylo-Mucine form by mol ratio, and the concentration of described flocculation agent is 25ppm; Be provided with aperture plate in described food filtering basin two, the grid gap length of described aperture plate is 0.3 ~ 0.8cm; Be provided with separation filter plate in described food settling tank two, described separation filter plate can by solid-liquid separation, and described food settling tank two is connected with fertilizer producing system.
5. the urban industry Sewage treatment systems as described in claim 1 or 2 or 4, is characterized in that: the outlet in described inorganic filter pond two is provided with proofing unit, can detect in filtrate containing heavy metal amount; Described inorganic filter pond two is provided with the one-way channel to oxidation pond.
6. urban industry Sewage treatment systems as claimed in claim 5, it is characterized in that: described inorganic filter pond one is provided with aperture plate, the grid gap length of described aperture plate is 5 ~ 8cm; Ferrite process is adopted, n (Fe in described ferrite process in described oxidation pond
2+)/n (M
2+)=15; Be provided with inorganic flocculation agent in described inorganic precipitation pond, described inorganic flocculation agent is the chitosan of 1:1:0.4:1.2 by mol ratio, Na
2b
4o
710H
2o, MgSO
47H
2o, AlCl
36H
2o forms, and the concentration of described inorganic flocculation agent is 25ppm; Be provided with filter screen in described inorganic filter pond two, the grid gap length of described filter screen is 0.05 ~ 0.08cm; Import and the outlet in described membrane filtration pond are equipped with pressure regulating pump, and described membrane filtration pond is provided with thermostat, and energy holding temperature is constant in the scope of 51 ~ 55 DEG C, is provided with 50nm multi-channel industrial inorganic ceramic film in described membrane filtration pond.
7. the urban industry Sewage treatment systems as described in claim 1 or 2 or 6, is characterized in that: be provided with aperture plate in described organic filter pond, and the grid gap length of described aperture plate is 5 ~ 8cm; Adopt sequential extractions in described abstraction pool, extraction agent is respectively: sherwood oil, ethyl acetate: sherwood oil=1:5, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate; Described abstraction pool is provided with separation system, organic layer can be separated with water layer; Described abstraction pool is connected with fertilizer producing system.
8. urban industry Sewage treatment systems as claimed in claim 7, is characterized in that: described detection cell is provided with the individual event passage leading to food settling tank two, soda acid pond, membrane filtration pond, abstraction pool, anaerobic pond and wetland respectively; Be provided with proofing unit in described detection cell, the content of the solid particulate of size >0.3cm in water can be detected, containing heavy metal amount, carbon content, nitrogen content and phosphorus content.
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| CN205115218U (en) * | 2015-09-25 | 2016-03-30 | 张荣斌 | City industrial wastewater treatment system |
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|---|---|---|---|---|
| JPH10286592A (en) * | 1997-04-16 | 1998-10-27 | Ataka Kogyo Kk | Waste treatment method |
| KR20000005646A (en) * | 1998-06-22 | 2000-01-25 | 코쿠보 사토루 | A system for disposal of waste matter chemically or biologically |
| CN103011529A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Industrial wastewater treatment technology |
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