CN105366875A - Urban sewage treatment system - Google Patents

Urban sewage treatment system Download PDF

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CN105366875A
CN105366875A CN201510616494.0A CN201510616494A CN105366875A CN 105366875 A CN105366875 A CN 105366875A CN 201510616494 A CN201510616494 A CN 201510616494A CN 105366875 A CN105366875 A CN 105366875A
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pond
sewage
settling tank
executive signal
inorganic
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CN105366875B (en
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张荣斌
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SICHUAN CHANGHE ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD.
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张荣斌
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Abstract

The invention discloses an urban sewage treatment system which comprises a domestic sewage pretreatment line and an industrial sewage pretreatment line. The domestic sewage pretreatment line and the industrial sewage pretreatment line intersect with a total treatment line. The domestic sewage pretreatment line comprises a first filtering basin, a first sedimentation basin, a second filtering basin and a second sedimentation basin which are connected in sequence. The industrial sewage pretreatment line comprises a food industrial sewage pretreatment line, an inorganic sewage pretreatment line and an organic pretreatment line which are connected in parallel. The food industrial sewage pretreatment line and the domestic sewage pretreatment line intersect with the first filtering basin. The 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 industrial organic sewage pretreatment line and the industrial inorganic pretreatment line intersect with the membrane filtering basin.

Description

Urban sewage treatment system
Technical field
The present invention relates to a kind of Sewage treatment systems, particularly a kind of urban sewage treatment system.
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 sewage disposal is comparatively single, main employing two sections of activated sludge processes, be considered as a Sewage treatment systems by sewer line, sewage work, comprise: Self-priming jet aeration machine, lateral flow domatic inclined-plate clarifying basin, unsupported sludge suspension type biologic packing material.Its concrete methods of realizing is: A section high loading, B section underload, and A, B two sections refluxes respectively, makes full use of the microorganism in it, makes it play one's part to the full, and creates the growth that good envrionment conditions is convenient to the superior microorganism population of different times growth.But this treatment process is to dye effect stability, but cost is higher, and clearance is lower, and BOD5 clearance is only 90%, COD clearance is only 80%.
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 sewage treatment system of all kinds of sewage extensively, efficiently.
The technical solution used in the present invention is as follows:
Urban sewage treatment system, comprises sanitary sewage pre-treatment route and industrial sewage pre-treatment route, and described sanitary sewage pre-treatment route and industrial sewage pre-treatment route are intersected in and always process route; Described sanitary sewage pre-treatment route comprises the filtering basin one be linked in sequence, settling tank one, filtering basin two and settling tank two; Described industrial sewage pre-treatment route comprises foodstuffs industry sewage disinfection treatment route in parallel, inorganic sewage disinfection treatment route and organic sewage pre-treatment route; Described foodstuffs industry sewage disinfection treatment route and sanitary sewage pre-treatment route are intersected in filtering basin one; Described 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 industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond.
Owing to have employed technique scheme, sanitary sewage is different with the contaminant component of industrial sewage, content is different, sanitary sewage is mainly containing N, P, and industrial sewage can be divided into foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage, the contaminant component content in foodstuffs industry sewage is identical with the cardinal principle of sanitary sewage, can carry out pre-treatment in an identical manner; In industrial inorganic sewage, heavy metal content is higher, and in organic sewage, poisonous and hazardous organic constituents content is higher; By sanitary 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 sewage treatment system, described total process route comprises the anaerobic pond be linked in sequence, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond; Described sanitary sewage disposal route and industrial inorganic process route are intersected in anaerobic pond; 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, and 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 the typha angustifolia of 26 ~ 31%, the cattail of 19 ~ 22%, the reed of 32 ~ 40% and the chlorella of 16 ~ 23%; Described ultraviolet sterilization pond, can send wavelength 200 ~ 275nm, the ultraviolet waves within the scope of dosage 13000 ~ 15000 μ W.s/cm2.
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, and the germ, parasite, virus etc. of 99% can be got rid of in ultraviolet sterilization pond.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.Adopt ultraviolet sterilization to substitute traditional chemosterilization, not only increased substantially sterilization rate, can not impact environment simultaneously, more can not cause secondary pollution.
Urban sewage treatment system, described settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate; Described settling tank two is provided with the one-way channel to filtering basin one; Be provided with aperture plate in filtering basin one, the grid gap length of described aperture plate is 5 ~ 8cm; Be provided with flocculation agent in described settling tank one, be provided with separation filter plate in described settling tank one, described separation filter plate can by solid-liquid separation; Be provided with thermostat in described 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 filtering basin two, the grid gap length of described aperture plate is 0.3 ~ 0.8cm; Be provided with separation filter plate in described settling tank two, described separation filter plate can by solid-liquid separation, and described 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 sewage treatment system, 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; 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 (Fe2+)/n (M2+)=15 in described ferrite process in described oxidation pond; 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, and Na2B4O710H2O, MgSO47H2O, AlCl36H2O form, 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 sewage treatment system, 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 sewage treatment system, described 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.
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.
Urban sewage treatment system, comprises the following steps:
Step one: by sanitary sewage, foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2: sanitary sewage flows through the aperture plate in filter tank one, filter the particle being greater than 5 ~ 8cm, liquid stream is to settling tank one, settling tank one keeps the constant temperature of 25 ~ 28 DEG C, add the flocculation agent that concentration is 25ppm, leave standstill 2 ~ 3d, effluent stream is to the aperture plate of filtering basin two, filtration is greater than the particle of 0.3 ~ 0.8cm, liquid stream, to settling tank two, regulates in the scope of pH to 8 ~ 9, leaves standstill 2 ~ 3d in settling tank two, solid and liquid separation are opened, fertilizer producing system delivered to by solid; Detect the content being greater than the particulate matter of 0.3cm in the liquid of settling tank two separation, as granule content >0.2ppm, liquid flows back to filtering basin one; As granule content <0.2ppm, liquid stream is to anaerobic pond;
Step 3: foodstuffs industry effluent stream is through the aperture plate in filter tank one, and filter the particle being greater than 5 ~ 8cm, liquid stream is to settling tank one, settling tank one keeps the constant temperature of 25 ~ 28 DEG C, add the flocculation agent that concentration is 25ppm, leave standstill 2 ~ 3d, effluent stream is to the aperture plate of filtering basin two, filtration is greater than the particle of 0.3 ~ 0.8cm, liquid stream, to settling tank two, regulates in the scope of pH to 8 ~ 9, leaves standstill 2 ~ 3d in settling tank two, solid and liquid separation are opened, fertilizer producing system delivered to by solid; Detect the content being greater than the particulate matter of 0.3cm in the liquid of settling tank two separation, as granule content >0.2ppm, liquid flows back to filtering basin one; As granule content <0.2ppm, liquid stream is to anaerobic pond;
Step 4: industrial organic sewage flows through the aperture plate in organic filter tank, filtration is greater than the particle of 5 ~ 8cm, liquid stream, to abstraction pool, adopts extraction agent to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5 in abstraction pool, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and organic layer and water layer are separated by the separation system in abstraction pool, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond;
Step 5: industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream is to soda acid pond, in soda acid pond Ca (OH) 2, liquid is made as saturated solution, flow to oxidation pond, through ferrite process in oxidation pond, remove heavy metal ion under the condition of n (Fe2+)/n (M2+)=15 after, liquid stream is to inorganic precipitation pond, add the flocculation agent that concentration is 25ppm, leave standstill 2 ~ 3d, effluent stream, to the aperture plate in inorganic filter pond two, filters the particle being greater than 0.05 ~ 0.08; Detect containing heavy metal amount in the liquid after the filtration of inorganic filter pond two, 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; Pressure, through the pressure regulating pump of membrane filtration pond import, is adjusted to 0.32MPa by sewage, keeps the constant temperature of 51 ~ 55 DEG C in membrane filtration pond, make liquid through 50nm ceramic membrane, 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;
Step 5: sewage is in anaerobic pond, under the effect of nitrifier and polyP bacteria, leave standstill 3 ~ 5d, flow to Aerobic Pond, under the effect of denitrifying bacteria, leave standstill 3 ~ 4d, detect nitrogen content and phosphorus content in the sewage of Aerobic Pond process, as nitrogen content >8ppm, during phosphorus content >0.3ppm, liquid stream is back to anaerobic pond; As nitrogen content <8ppm, during phosphorus content <0.3ppm, liquid stream is to wetland, and sewage is under the effect of wetland, and process 10 ~ 15d, flow to detection cell;
Step 6: detection cell is the content of the solid particulate of size >0.3cm in water body after check processing respectively, 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;
Step 7: ultraviolet sterilization pond, at wavelength 200 ~ 275nm, in the scope of dosage 13000 ~ 15000 μ W.s/cm2, discharges after process 40 ~ 60s.
The automatic control system of municipal sewage treatment of the present invention, it is characterized in that, it comprises first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, voltage regulating module, filter material interpolation module, magnetic valve and PLC, each feeder connection place is located at by described magnetic valve, described first detection module comprises the temperature monitor being located at settling tank one, inorganic precipitation pond and membrane filtration pond, for detecting the temperature value of sewage, and be separately converted to numerary signal 101 and be passed to PLC; Described second detection module comprises the PH detector being located at settling tank two, for detecting the pH value of sewage, and is converted into numerary signal 201 and is passed to PLC; Described 3rd detection module comprises the particle detector being located at settling tank two and inorganic filter pond two, the nitrogen content detector of Aerobic Pond and phosphorus content detector, and the particle detector of detection cell, heavy metal detector, carbon content detector, nitrogen content detector and phosphorus content detector, for detecting granule content CK in sewage, heavy metal content CZ, carbon content CC, nitrogen content CN and phosphorus content CP, and be converted into numerary signal 301,302,303,304 and 305 and be passed to PLC; Described 4th detection module comprises the pressure detection module being located at membrane filtration pond, for the pressure in detection cell, and is converted into numerary signal 401 and is passed to PLC;
Described PLC adds module be connected with magnetic valve with first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, voltage regulating module, filter material respectively; For receiving numerary signal 101, the temperature value when settling tank one or inorganic precipitation pond is less than 25 DEG C, or when the temperature value in membrane filtration pond is less than 51 DEG C, transmits executive signal 111 to heating module; Temperature value when settling tank one or inorganic precipitation pond is greater than 28 DEG C, or when the temperature value in membrane filtration pond is less than 55 DEG C, transmits executive signal 112 to heating module; Receive numerary signal 201, when its pH value be less than 8 or be greater than 9 time, to filter material add module transmit executive signal 211 or 212; Receive numerary signal 301,302,303,304 and 305, after judging and calculating, transmit executive signal 311,312 to corresponding magnetic valve ... 322; Receive numerary signal 401, transmit executive signal 401 or 402 to voltage regulating module;
Described heating module, receives executive signal 111, the water in settling tank one or inorganic precipitation pond is heated to 25 DEG C, or the water in membrane filtration pond is heated to 51 DEG C; Receive executive signal 112, stop heating; Described filter material adds module, receives executive signal 211, then adds the alkaline filtering material of predetermined dose; Receive executive signal 212, then add the acid filter material of predetermined dose; Described corresponding magnetic valve receives corresponding executive signal, then open its valve; Described voltage regulating module comprises the pressure regulating pump being located at membrane filtration pond ingress and exit, for receiving executive signal 401, ingress's pressure being adjusted to 0.32MPa, making liquid through 50nm ceramic membrane, receive executive signal 402, exit pressure is adjusted to 0.10MPa.
The automatic control system of municipal sewage treatment of the present invention, PLC transmits executive signal 311,312 to corresponding magnetic valve ... 322 detailed processes are as follows:
In settling tank two: PLC receives numerary signal 301, if CK >=0.2ppm, then transmit executive signal 311 to the magnetic valve on settling tank two to filtering basin one passage, if CK<0.2ppm, then transmit executive signal 312 to the magnetic valve on two to the anaerobic pond passage of deep pond;
In inorganic filter pond two: if during CK >=3ppm, to filtering basin to the magnetic valve of oxidation pond passage transmission executive signal 313; If during CK<3ppm, to filtering basin to the magnetic valve of membrane filtration pond passage transmission executive signal 314;
In Aerobic Pond: if CN >=8ppm, CP >=0.3ppm, then to Aerobic Pond to the magnetic valve of anaerobic pond passage
Transmit executive signal 314; If when CN<8ppm, CP<0.3ppm, then to Aerobic Pond to the magnetic valve of wetland passage transmission executive signal 315;
In detection cell: if CK>0.2ppm, transmit executive signal 316 to detection cell to settling tank two passage; If CZ>3ppm, to detection cell to the magnetic valve of soda acid pond passage transmission executive signal 317; If 3ppm>CZ>0.05ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 318; If during CC>0.02ppm, to detection cell to the magnetic valve of abstraction pool passage transmission executive signal 319; If during 0.02ppm>CC>0.003ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 320;
If CN>8ppm or CP>0.3ppm, to detection cell to the magnetic valve of anaerobic pond passage transmission executive signal 320; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, to detection cell to the magnetic valve of wetland passage transmission executive signal 321; If CK<0.2ppm, when CZ<0.05ppm, CC>0.02ppm, CN<0.1ppm, during CP<0.1ppm, to detection cell to the magnetic valve in wetland ultraviolet sterilization pond transmission executive signal 322.
The automatic control system of municipal sewage treatment of the present invention, comprise: time measurement module, it comprises is located at settling tank one in sanitary sewage route and settling tank two, be located at the inorganic precipitation pond of foodstuffs industry sewage route, settling tank two, oxidation pond, anaerobic pond, Aerobic Pond and wetland time measurement instrument, for setting sewage time of repose; When the predetermined time of repose of arrival, send prompting sound, remind staff's next step operation progressive.
The automatic control system of municipal sewage treatment of the present invention, comprise: ultraviolet sterilization module, it comprises the ultraviolet sterilization lamp being located at ultraviolet sterilization pond, and its ultraviolet wavelength of launching is 200 ~ 275nm, launching dosage is 13000 ~ 15000 μ W.s/cm2, irradiates 40 ~ 60s at every turn.
The autocontrol method of municipal sewage treatment of the present invention, it comprises the following steps:
Step 1: by sanitary sewage, foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2: sanitary sewage flows through the aperture plate with foodstuffs industry sewage water filtration pond one, filters and is greater than the particle of 5 ~ 8cm, and liquid stream is to settling tank one, and described first detection module detects the temperature value of sewage, and is separately converted to numerary signal 101 and is passed to PLC; Described PLC receives numerary signal 101, when the temperature value of settling tank one is less than 25 DEG C, transmits executive signal 111 to heating module; When the temperature value of settling tank one is greater than 28 DEG C, transmit executive signal 112 to heating module; Described heating module, receives executive signal 111, the water in settling tank one is heated to 25 DEG C; Receive executive signal 112, stop heating; Then add the flocculation agent that concentration is 25ppm, arranging time of repose at the time measurement module place at this place is 2 ~ 3d, and effluent stream is to the aperture plate of filtering basin two, and filter the particle being greater than 0.3 ~ 0.8cm, liquid stream is to settling tank two;
Step 3: described second detection module detects the pH value of sewage in settling tank two, and be converted into numerary signal 201 and be passed to PLC; Described PLC receives numerary signal 201, when its pH value be less than 8 or be greater than 9 time, add module to filter material and transmit executive signal 211 or 212; Described filter material adds module, if receive executive signal 211, then adds the alkaline filtering material of predetermined dose; If receive executive signal 212, then add the acid filter material of predetermined dose; Arranging time of repose at the time measurement module place at this place is 2 ~ 3d, and solid and liquid separation are opened, fertilizer producing system delivered to by solid;
Step 4: described 3rd detection module detects granule content CK in the liquid of settling tank two separation, and be converted into numerary signal 301 and be passed to PLC, described PLC receives numerary signal 301, if CK >=0.2ppm, then transmit executive signal 311 to the magnetic valve on settling tank two to filtering basin one passage, if CK<0.2ppm, then transmit executive signal 312 to the magnetic valve on two to the anaerobic pond passage of deep pond; Corresponding magnetic valve receives executive signal and opens its valve;
Step 5: industrial organic sewage flows through the aperture plate in organic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream, to abstraction pool, adopts extraction agent to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5 in abstraction pool, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and organic layer and water layer are separated by the separation system in abstraction pool, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond;
Step 6: industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream is to soda acid pond, in soda acid pond Ca (OH) 2, liquid is made as saturated solution, flow to oxidation pond, through ferrite process in oxidation pond, remove heavy metal ion under the condition of n (Fe2+)/n (M2+)=15 after, liquid stream is to inorganic precipitation pond, add the flocculation agent that concentration is 25ppm, arranging time of repose at the time measurement module place at this place is 2 ~ 3d, after standing 2 ~ 3d, effluent stream is to the aperture plate in inorganic filter pond two, the particle that filtration is greater than 0.05 ~ 0.08,
Step 7: described 3rd detection module detects granule content CK in the liquid after the filtration of inorganic filter pond two, if during CK >=3ppm, to filtering basin to the magnetic valve of oxidation pond passage transmission executive signal 313; If during CK<3ppm, to filtering basin to the magnetic valve of membrane filtration pond passage transmission executive signal 314; Corresponding magnetic valve receives executive signal and opens its valve;
Step 8: described 4th detection module comprises the pressure detection module being located at membrane filtration pond, for the pressure P in detection cell, and is converted into numerary signal 401 and is passed to PLC; Described PLC receives numerary signal 401, transmits executive signal 401 or 402 to voltage regulating module; Described voltage regulating module receives executive signal 401, and ingress's pressure is adjusted to 0.32MPa, and meanwhile, described first detection module detects the temperature value of sewage, and is separately converted to numerary signal 101 and is passed to PLC; Described PLC receives numerary signal 101, when the temperature value in membrane filtration pond is less than 51 DEG C, transmits executive signal 111 to heating module; When the temperature value in membrane filtration pond is greater than 55 DEG C, transmit executive signal 112 to heating module; Described heating module, receives executive signal 111, the water in settling tank one is heated to 25 DEG C; Receive executive signal 112, stop heating, make liquid through 50nm ceramic membrane, receive executive signal 402, exit pressure is adjusted to 0.10MPa, makes liquid stream to anaerobic pond;
Step 9: sewage is in anaerobic pond, arranging time of repose at the time measurement module place at this place is 3 ~ 5d, under the effect of nitrifier and polyP bacteria, leave standstill 3 ~ 5d, flow to Aerobic Pond, arranging time of repose at the time measurement module place at this place is 3 ~ 4d, under the effect of denitrifying bacteria, leave standstill 3 ~ 4d, described 3rd detection module detects nitrogen content CN and phosphorus content CP in the sewage of Aerobic Pond process, and is converted into numerary signal 304 and 305 and is passed to PLC; Described PLC receives numerary signal 304 and 305, if CN >=8ppm, CP >=0.3ppm, then to Aerobic Pond to the magnetic valve of anaerobic pond passage; Transmit executive signal 314; If when CN<8ppm, CP<0.3ppm, then to Aerobic Pond to the magnetic valve of wetland passage transmission executive signal 315; Corresponding magnetic valve receives executive signal and opens its valve; Sewage is under the effect of wetland, and process 10 ~ 15d, flow to detection cell;
Step 10: described 3rd detection module detects the granule content CK of sewage in detection cell, heavy metal content CZ, carbon content CC, nitrogen content CN and phosphorus content CP, and be converted into numerary signal 301,302,303,304 and 305 and be passed to PLC; Described PLC receives numerary signal 301,302 ... 305, if CK>0.2ppm, transmit executive signal 316 to detection cell to settling tank two passage; If CZ>3ppm, to detection cell to the magnetic valve of soda acid pond passage transmission executive signal 317; If 3ppm>CZ>0.05ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 318; If during CC>0.02ppm, to detection cell to the magnetic valve of abstraction pool passage transmission executive signal 319; If during 0.02ppm>CC>0.003ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 320; If CN>8ppm or CP>0.3ppm, to detection cell to the magnetic valve of anaerobic pond passage transmission executive signal 320; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, to detection cell to the magnetic valve of wetland passage transmission executive signal 321; If CK<0.2ppm, when CZ<0.05ppm, CC>0.02ppm, CN<0.1ppm, during CP<0.1ppm, to detection cell to the magnetic valve in wetland ultraviolet sterilization pond transmission executive signal 322; Corresponding magnetic valve receives executive signal and opens its valve;
Step 11: ultraviolet sterilization pond, discharges at every turn after ultraviolet sterilization light irradiation 40 ~ 60s.
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 sewage treatment system 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 mol ratio affects clearance;
Fig. 6 is the graphic representation that membrane pore size size affects clearance;
Fig. 7 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 sewage treatment system, by sanitary sewage, industrial sewage separate collection, industrial sewage is again by foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection; The sanitary sewage of separate collection and industrial sewage carry out pre-treatment respectively through sanitary sewage pre-treatment route and industrial sewage pre-treatment route; Foodstuffs industry sewage carries out pre-treatment through sanitary sewage pre-treatment route, and industrial inorganic sewage and industrial organic sewage carry out pre-treatment respectively through industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route; Described sanitary sewage pre-treatment route and industrial 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.
Sanitary sewage pre-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; Sanitary sewage flows 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 5, 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.
Foodstuffs industry effluent stream, through sanitary sewage pre-treatment route, carries out the pre-treatment same with sanitary sewage.Comprise 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; Sanitary sewage flows 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 5, 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, temperature on the impact of clearance as shown in Figure 6, the pressure regulating pump that liquid after filtration exports through membrane filtration pond, 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 7.
The automatic control system of municipal sewage treatment, comprise first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, voltage regulating module, filter material interpolation module, magnetic valve and PLC, each feeder connection place is located at by magnetic valve, first detection module comprises the temperature monitor being located at settling tank one, inorganic precipitation pond and membrane filtration pond, for detecting the temperature value of sewage, and be separately converted to numerary signal 101 and be passed to PLC; Second detection module comprises the PH detector being located at settling tank two, for detecting the pH value of sewage, and is converted into numerary signal 201 and is passed to PLC; 3rd detection module comprises the particle detector being located at settling tank two and inorganic filter pond two, the nitrogen content detector of Aerobic Pond and phosphorus content detector, and the particle detector of detection cell, heavy metal detector, carbon content detector, nitrogen content detector and phosphorus content detector, for detecting granule content CK in sewage, heavy metal content CZ, carbon content CC, nitrogen content CN and phosphorus content CP, and be converted into numerary signal 301,302,303,304 and 305 and be passed to PLC; 4th detection module comprises the pressure detection module being located at membrane filtration pond, for the pressure in detection cell, and is converted into numerary signal 401 and is passed to PLC;
PLC adds module be connected with magnetic valve with first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, voltage regulating module, filter material respectively; For receiving numerary signal 101, the temperature value when settling tank one or inorganic precipitation pond is less than 25 DEG C, or when the temperature value in membrane filtration pond is less than 51 DEG C, transmits executive signal 111 to heating module; Temperature value when settling tank one or inorganic precipitation pond is greater than 28 DEG C, or when the temperature value in membrane filtration pond is less than 55 DEG C, transmits executive signal 112 to heating module; Receive numerary signal 201, when its pH value be less than 8 or be greater than 9 time, to filter material add module transmit executive signal 211 or 212; Receive numerary signal 301,302,303,304 and 305, after judging and calculating, transmit executive signal 311,312 to corresponding magnetic valve ... 322; Receive numerary signal 401, transmit executive signal 401 or 402 to voltage regulating module;
Heating module, receives executive signal 111, the water in settling tank one or inorganic precipitation pond is heated to 25 DEG C, or the water in membrane filtration pond is heated to 51 DEG C; Receive executive signal 112, stop heating; Described filter material adds module, receives executive signal 211, then adds the alkaline filtering material of predetermined dose; Receive executive signal 212, then add the acid filter material of predetermined dose; Described corresponding magnetic valve receives corresponding executive signal, then open its valve; Described voltage regulating module comprises the pressure regulating pump being located at membrane filtration pond ingress and exit, for receiving executive signal 401, ingress's pressure being adjusted to 0.32MPa, making liquid through 50nm ceramic membrane, receive executive signal 402, exit pressure is adjusted to 0.10MPa.
The automatic control system of municipal sewage treatment, PLC transmits executive signal 311,312 to corresponding magnetic valve ... 322 detailed processes are as follows:
In settling tank two: PLC receives numerary signal 301, if CK >=0.2ppm, then transmit executive signal 311 to the magnetic valve on settling tank two to filtering basin one passage, if CK<0.2ppm, then transmit executive signal 312 to the magnetic valve on two to the anaerobic pond passage of deep pond;
In inorganic filter pond two: if during CK >=3ppm, to filtering basin to the magnetic valve of oxidation pond passage transmission executive signal 313; If during CK<3ppm, to filtering basin to the magnetic valve of membrane filtration pond passage transmission executive signal 314;
In Aerobic Pond: if CN >=8ppm, CP >=0.3ppm, then to Aerobic Pond to the magnetic valve of anaerobic pond passage
Transmit executive signal 314; If when CN<8ppm, CP<0.3ppm, then to Aerobic Pond to the magnetic valve of wetland passage transmission executive signal 315;
In detection cell: if CK>0.2ppm, transmit executive signal 316 to detection cell to settling tank two passage; If CZ>3ppm, to detection cell to the magnetic valve of soda acid pond passage transmission executive signal 317; If 3ppm>CZ>0.05ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 318; If during CC>0.02ppm, to detection cell to the magnetic valve of abstraction pool passage transmission executive signal 319; If during 0.02ppm>CC>0.003ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 320;
If CN>8ppm or CP>0.3ppm, to detection cell to the magnetic valve of anaerobic pond passage transmission executive signal 320; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, to detection cell to the magnetic valve of wetland passage transmission executive signal 321; If CK<0.2ppm, when CZ<0.05ppm, CC>0.02ppm, CN<0.1ppm, during CP<0.1ppm, to detection cell to the magnetic valve in wetland ultraviolet sterilization pond transmission executive signal 322.
The automatic control system of municipal sewage treatment, also comprise: time measurement module, it comprises is located at settling tank one in sanitary sewage route and settling tank two, be located at the inorganic precipitation pond of foodstuffs industry sewage route, settling tank two, oxidation pond, anaerobic pond, Aerobic Pond and wetland time measurement instrument, for setting sewage time of repose; When the predetermined time of repose of arrival, send prompting sound, remind staff's next step operation progressive.
The automatic control system of municipal sewage treatment, also comprise: ultraviolet sterilization module, it comprises the ultraviolet sterilization lamp being located at ultraviolet sterilization pond, and its ultraviolet wavelength of launching is 200 ~ 275nm, launching dosage is 13000 ~ 15000 μ W.s/cm2, irradiates 40 ~ 60s at every turn.
The autocontrol method of municipal sewage treatment, comprises the following steps:
Step 1: by sanitary sewage, foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2: sanitary sewage flows through the aperture plate with foodstuffs industry sewage water filtration pond one, filters and is greater than the particle of 5 ~ 8cm, and liquid stream is to settling tank one, and described first detection module detects the temperature value of sewage, and is separately converted to numerary signal 101 and is passed to PLC; Described PLC receives numerary signal 101, when the temperature value of settling tank one is less than 25 DEG C, transmits executive signal 111 to heating module; When the temperature value of settling tank one is greater than 28 DEG C, transmit executive signal 112 to heating module; Described heating module, receives executive signal 111, the water in settling tank one is heated to 25 DEG C; Receive executive signal 112, stop heating; Then add the flocculation agent that concentration is 25ppm, arranging time of repose at the time measurement module place at this place is 2 ~ 3d, and effluent stream is to the aperture plate of filtering basin two, and filter the particle being greater than 0.3 ~ 0.8cm, liquid stream is to settling tank two;
Step 3: described second detection module detects the pH value of sewage in settling tank two, and be converted into numerary signal 201 and be passed to PLC; Described PLC receives numerary signal 201, when its pH value be less than 8 or be greater than 9 time, add module to filter material and transmit executive signal 211 or 212; Described filter material adds module, if receive executive signal 211, then adds the alkaline filtering material of predetermined dose; If receive executive signal 212, then add the acid filter material of predetermined dose; Arranging time of repose at the time measurement module place at this place is 2 ~ 3d, and solid and liquid separation are opened, fertilizer producing system delivered to by solid;
Step 4: described 3rd detection module detects granule content CK in the liquid of settling tank two separation, and be converted into numerary signal 301 and be passed to PLC, described PLC receives numerary signal 301, if CK >=0.2ppm, then transmit executive signal 311 to the magnetic valve on settling tank two to filtering basin one passage, if CK<0.2ppm, then transmit executive signal 312 to the magnetic valve on two to the anaerobic pond passage of deep pond; Corresponding magnetic valve receives executive signal and opens its valve;
Step 5: industrial organic sewage flows through the aperture plate in organic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream, to abstraction pool, adopts extraction agent to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5 in abstraction pool, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and organic layer and water layer are separated by the separation system in abstraction pool, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond;
Step 6: industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream is to soda acid pond, in soda acid pond Ca (OH) 2, liquid is made as saturated solution, flow to oxidation pond, through ferrite process in oxidation pond, remove heavy metal ion under the condition of n (Fe2+)/n (M2+)=15 after, liquid stream is to inorganic precipitation pond, add the flocculation agent that concentration is 25ppm, arranging time of repose at the time measurement module place at this place is 2 ~ 3d, after standing 2 ~ 3d, effluent stream is to the aperture plate in inorganic filter pond two, the particle that filtration is greater than 0.05 ~ 0.08,
Step 7: described 3rd detection module detects granule content CK in the liquid after the filtration of inorganic filter pond two, if during CK >=3ppm, to filtering basin to the magnetic valve of oxidation pond passage transmission executive signal 313; If during CK<3ppm, to filtering basin to the magnetic valve of membrane filtration pond passage transmission executive signal 314; Corresponding magnetic valve receives executive signal and opens its valve;
Step 8: described 4th detection module comprises the pressure detection module being located at membrane filtration pond, for the pressure P in detection cell, and is converted into numerary signal 401 and is passed to PLC; Described PLC receives numerary signal 401, transmits executive signal 401 or 402 to voltage regulating module; Described voltage regulating module receives executive signal 401, and ingress's pressure is adjusted to 0.32MPa, and meanwhile, described first detection module detects the temperature value of sewage, and is separately converted to numerary signal 101 and is passed to PLC; Described PLC receives numerary signal 101, when the temperature value in membrane filtration pond is less than 51 DEG C, transmits executive signal 111 to heating module; When the temperature value in membrane filtration pond is greater than 55 DEG C, transmit executive signal 112 to heating module; Described heating module, receives executive signal 111, the water in settling tank one is heated to 25 DEG C; Receive executive signal 112, stop heating, make liquid through 50nm ceramic membrane, receive executive signal 402, exit pressure is adjusted to 0.10MPa, makes liquid stream to anaerobic pond;
Step 9: sewage is in anaerobic pond, arranging time of repose at the time measurement module place at this place is 3 ~ 5d, under the effect of nitrifier and polyP bacteria, leave standstill 3 ~ 5d, flow to Aerobic Pond, arranging time of repose at the time measurement module place at this place is 3 ~ 4d, under the effect of denitrifying bacteria, leave standstill 3 ~ 4d, described 3rd detection module detects nitrogen content CN and phosphorus content CP in the sewage of Aerobic Pond process, and is converted into numerary signal 304 and 305 and is passed to PLC; Described PLC receives numerary signal 304 and 305, if CN >=8ppm, CP >=0.3ppm, then to Aerobic Pond to the magnetic valve of anaerobic pond passage; Transmit executive signal 314; If when CN<8ppm, CP<0.3ppm, then to Aerobic Pond to the magnetic valve of wetland passage transmission executive signal 315; Corresponding magnetic valve receives executive signal and opens its valve; Sewage is under the effect of wetland, and process 10 ~ 15d, flow to detection cell;
Step 10: described 3rd detection module detects the granule content CK of sewage in detection cell, heavy metal content CZ, carbon content CC, nitrogen content CN and phosphorus content CP, and be converted into numerary signal 301,302,303,304 and 305 and be passed to PLC; Described PLC receives numerary signal 301,302 ... 305, if CK>0.2ppm, transmit executive signal 316 to detection cell to settling tank two passage; If CZ>3ppm, to detection cell to the magnetic valve of soda acid pond passage transmission executive signal 317; If 3ppm>CZ>0.05ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 318; If during CC>0.02ppm, to detection cell to the magnetic valve of abstraction pool passage transmission executive signal 319; If during 0.02ppm>CC>0.003ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 320; If CN>8ppm or CP>0.3ppm, to detection cell to the magnetic valve of anaerobic pond passage transmission executive signal 320; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, to detection cell to the magnetic valve of wetland passage transmission executive signal 321; If CK<0.2ppm, when CZ<0.05ppm, CC>0.02ppm, CN<0.1ppm, during CP<0.1ppm, to detection cell to the magnetic valve in wetland ultraviolet sterilization pond transmission executive signal 322; Corresponding magnetic valve receives executive signal and opens its valve;
Step 11: ultraviolet sterilization pond, discharges at every turn after ultraviolet sterilization light irradiation 40 ~ 60s.
Embodiment 2
As shown in Figure 1, urban sewage treatment system, by sanitary sewage, industrial sewage separate collection, industrial sewage is again by foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection; The sanitary sewage of separate collection and industrial sewage carry out pre-treatment respectively through sanitary sewage pre-treatment route and industrial sewage pre-treatment route; Foodstuffs industry sewage carries out pre-treatment through sanitary sewage pre-treatment route, and industrial inorganic sewage and industrial organic sewage carry out pre-treatment respectively through industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route; Described sanitary sewage pre-treatment route and industrial 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.
Sanitary sewage pre-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; Sanitary sewage flows 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.
Foodstuffs industry effluent stream, through sanitary sewage pre-treatment route, carries out the pre-treatment same with sanitary sewage.Comprise 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; Sanitary sewage flows 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 sewage treatment system, by sanitary sewage, industrial sewage separate collection, industrial sewage is again by foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection; The sanitary sewage of separate collection and industrial sewage carry out pre-treatment respectively through sanitary sewage pre-treatment route and industrial sewage pre-treatment route; Foodstuffs industry sewage carries out pre-treatment through sanitary sewage pre-treatment route, and industrial inorganic sewage and industrial organic sewage carry out pre-treatment respectively through industrial inorganic sewage disinfection treatment route and industrial organic sewage pre-treatment route; Described sanitary sewage pre-treatment route and industrial 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.
Sanitary sewage pre-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; Sanitary sewage flows 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.
Foodstuffs industry effluent stream, through sanitary sewage pre-treatment route, carries out the pre-treatment same with sanitary sewage.Comprise 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; Sanitary sewage flows 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 (10)

1. urban sewage treatment system, is characterized in that: comprise sanitary sewage pre-treatment route and industrial sewage pre-treatment route, and described sanitary sewage pre-treatment route and industrial sewage pre-treatment route are intersected in and always process route; Described sanitary sewage pre-treatment route comprises the filtering basin one be linked in sequence, settling tank one, filtering basin two and settling tank two; Described industrial sewage pre-treatment route comprises foodstuffs industry sewage disinfection treatment route in parallel, inorganic sewage disinfection treatment route and organic sewage pre-treatment route; Described foodstuffs industry sewage disinfection treatment route and sanitary sewage pre-treatment route are intersected in filtering basin one; Described 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 industrial organic sewage pre-treatment route and industrial inorganic sewage disinfection treatment route are intersected in membrane filtration pond.
2. urban sewage treatment system as claimed in claim 1, is characterized in that: described total process route comprises the anaerobic pond be linked in sequence, Aerobic Pond, wetland, detection cell and ultraviolet sterilization pond; Described sanitary sewage disposal route and industrial inorganic process route are intersected in anaerobic pond; 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, and 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 the typha angustifolia of 26 ~ 31%, the cattail of 19 ~ 22%, the reed of 32 ~ 40% and the chlorella of 16 ~ 23%; Described ultraviolet sterilization pond, can send wavelength 200 ~ 275nm, dosage 13000 ~ 15000 μ W.s/cm 2ultraviolet waves in scope.
3. urban sewage treatment system as claimed in claim 1 or 2, is characterized in that: described settling tank two outlet is provided with proofing unit, can detect solid particulate size in filtrate; Described settling tank two is provided with the one-way channel to filtering basin one; Be provided with aperture plate in filtering basin one, the grid gap length of described aperture plate is 5 ~ 8cm; Be provided with flocculation agent in described settling tank one, be provided with separation filter plate in described settling tank one, described separation filter plate can by solid-liquid separation; Be provided with thermostat in described 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 filtering basin two, the grid gap length of described aperture plate is 0.3 ~ 0.8cm; Be provided with separation filter plate in described settling tank two, described separation filter plate can by solid-liquid separation, and described settling tank two is connected with fertilizer producing system.
4. urban sewage treatment system as claimed in claim 3, 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; 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; Be provided with aperture plate in described organic filter pond, 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.
5. urban sewage treatment system as claimed in claim 4, is characterized in that: described 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.
6. urban sewage treatment system as claimed in claim 5, is characterized in that comprising the following steps:
Step one: by sanitary sewage, foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2: sanitary sewage flows through the aperture plate in filter tank one, filter the particle being greater than 5 ~ 8cm, liquid stream is to settling tank one, settling tank one keeps the constant temperature of 25 ~ 28 DEG C, add the flocculation agent that concentration is 25ppm, leave standstill 2 ~ 3d, effluent stream is to the aperture plate of filtering basin two, filtration is greater than the particle of 0.3 ~ 0.8cm, liquid stream, to settling tank two, regulates in the scope of pH to 8 ~ 9, leaves standstill 2 ~ 3d in settling tank two, solid and liquid separation are opened, fertilizer producing system delivered to by solid; Detect the content being greater than the particulate matter of 0.3cm in the liquid of settling tank two separation, as granule content >0.2ppm, liquid flows back to filtering basin one; As granule content <0.2ppm, liquid stream is to anaerobic pond;
Step 3: foodstuffs industry effluent stream is through the aperture plate in filter tank one, filtration is greater than the particle of 5 ~ 8cm, and liquid stream is to settling tank one, and settling tank one keeps the constant temperature of 25 ~ 28 DEG C, add the flocculation agent that concentration is 25ppm, leave standstill 2 ~ 3d, effluent stream, to the aperture plate of filtering basin two, filters the particle being greater than 0.3 ~ 0.8cm, liquid stream is to settling tank two, leave standstill 2 ~ 3d, solid and liquid separation are opened, fertilizer producing system delivered to by solid; Detect the content being greater than the particulate matter of 0.3cm in the liquid of settling tank two separation, as granule content >0.2ppm, liquid flows back to filtering basin one; As granule content <0.2ppm, liquid stream is to anaerobic pond;
Step 4: industrial organic sewage flows through the aperture plate in organic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream, to abstraction pool, adopts extraction agent to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5 in abstraction pool, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and organic layer and water layer are separated by the separation system in abstraction pool, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond;
Step 5: industrial inorganic effluent stream, through the aperture plate in inorganic filter tank one, is filtered and is greater than the particle of 5 ~ 8cm, liquid stream to soda acid pond, in soda acid pond with Ca (OH) 2liquid is made as 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, to inorganic precipitation pond, adds the flocculation agent that concentration is 25ppm, leaves standstill 2 ~ 3d, and effluent stream, to the aperture plate in inorganic filter pond two, filters the particle being greater than 0.05 ~ 0.08; Detect containing heavy metal amount in the liquid after the filtration of inorganic filter pond two, as granule content >3ppm, liquid flows back to oxidation pond; As granule content <3ppm, liquid stream is to membrane filtration pond; Pressure, through the pressure regulating pump of membrane filtration pond import, is adjusted to 0.32MPa by sewage, keeps the constant temperature of 51 ~ 55 DEG C in membrane filtration pond, make liquid through 50nm ceramic membrane, 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;
Step 5: sewage is in anaerobic pond, under the effect of nitrifier and polyP bacteria, leave standstill 3 ~ 5d, flow to Aerobic Pond, under the effect of denitrifying bacteria, leave standstill 3 ~ 4d, detect nitrogen content and phosphorus content in the sewage of Aerobic Pond process, as nitrogen content >8ppm, during phosphorus content >0.3ppm, liquid stream is back to anaerobic pond; As nitrogen content <8ppm, during phosphorus content <0.3ppm, liquid stream is to wetland, and sewage is under the effect of wetland, and process 10 ~ 15d, flow to detection cell;
Step 6: detection cell is the content of the solid particulate of size >0.3cm in water body after check processing respectively, 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;
Step 7: ultraviolet sterilization pond, at wavelength 200 ~ 275nm, dosage 13000 ~ 15000 μ W.s/cm 2scope in, process 40 ~ 60s after discharge.
7. the automatic control system of the municipal sewage treatment as described in claim 1-6, it is characterized in that, it comprises first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, voltage regulating module, filter material interpolation module, magnetic valve and PLC, each feeder connection place is located at by described magnetic valve, described first detection module comprises the temperature monitor being located at settling tank one, inorganic precipitation pond and membrane filtration pond, for detecting the temperature value of sewage, and be separately converted to numerary signal 101 and be passed to PLC;
Described second detection module comprises the PH detector being located at settling tank two, for detecting the pH value of sewage, and is converted into numerary signal 201 and is passed to PLC; Described 3rd detection module comprises the particle detector being located at settling tank two and inorganic filter pond two, the nitrogen content detector of Aerobic Pond and phosphorus content detector, and the particle detector of detection cell, heavy metal detector, carbon content detector, nitrogen content detector and phosphorus content detector, for detecting granule content CK in sewage, heavy metal content CZ, carbon content CC, nitrogen content CN and phosphorus content CP, and be converted into numerary signal 301,302,303,304 and 305 and be passed to PLC; Described 4th detection module comprises the pressure detection module being located at membrane filtration pond, for the pressure in detection cell, and is converted into numerary signal 401 and is passed to PLC; Described PLC adds module be connected with magnetic valve with first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, voltage regulating module, filter material respectively; For receiving numerary signal 101, the temperature value when settling tank one or inorganic precipitation pond is less than 25 DEG C, or when the temperature value in membrane filtration pond is less than 51 DEG C, transmits executive signal 111 to heating module; Temperature value when settling tank one or inorganic precipitation pond is greater than 28 DEG C, or when the temperature value in membrane filtration pond is less than 55 DEG C, transmits executive signal 112 to heating module; Receive numerary signal 201, when its pH value be less than 8 or be greater than 9 time, to filter material add module transmit executive signal 211 or 212; Receive numerary signal 301,302,303,304 and 305, after judging and calculating, transmit executive signal 311,312 to corresponding magnetic valve ... 322; Receive numerary signal 401, transmit executive signal 401 or 402 to voltage regulating module;
Described heating module, receives executive signal 111, the water in settling tank one or inorganic precipitation pond is heated to 25 DEG C, or the water in membrane filtration pond is heated to 51 DEG C; Receive executive signal 112, stop heating; Described filter material adds module, receives executive signal 211, then adds the alkaline filtering material of predetermined dose; Receive executive signal 212, then add the acid filter material of predetermined dose; Described corresponding magnetic valve receives corresponding executive signal, then open its valve; Described voltage regulating module comprises the pressure regulating pump being located at membrane filtration pond ingress and exit, for receiving executive signal 401, ingress's pressure being adjusted to 0.32MPa, making liquid through 50nm ceramic membrane, receive executive signal 402, exit pressure is adjusted to 0.10MPa.
8. the automatic control system of municipal sewage treatment as claimed in claim 7, is characterized in that, PLC transmits executive signal 311,312 to corresponding magnetic valve ... 322 detailed processes are as follows:
In settling tank two: PLC receives numerary signal 301, if CK >=0.2ppm, then transmit executive signal 311 to the magnetic valve on settling tank two to filtering basin one passage, if CK<0.2ppm, then transmit executive signal 312 to the magnetic valve on two to the anaerobic pond passage of deep pond;
In inorganic filter pond two: if during CK >=3ppm, to filtering basin to the magnetic valve of oxidation pond passage transmission executive signal 313; If during CK<3ppm, to filtering basin to the magnetic valve of membrane filtration pond passage transmission executive signal 314;
In Aerobic Pond: if CN >=8ppm, CP >=0.3ppm, then to Aerobic Pond to the magnetic valve of anaerobic pond passage
Transmit executive signal 314; If when CN<8ppm, CP<0.3ppm, then to Aerobic Pond to the magnetic valve of wetland passage transmission executive signal 315;
In detection cell: if CK>0.2ppm, transmit executive signal 316 to detection cell to settling tank two passage; If CZ>3ppm, to detection cell to the magnetic valve of soda acid pond passage transmission executive signal 317; If 3ppm>CZ>0.05ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 318; If during CC>0.02ppm, to detection cell to the magnetic valve of abstraction pool passage transmission executive signal 319; If during 0.02ppm>CC>0.003ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 320;
If CN>8ppm or CP>0.3ppm, to detection cell to the magnetic valve of anaerobic pond passage transmission executive signal 320; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, to detection cell to the magnetic valve of wetland passage transmission executive signal 321; If CK<0.2ppm, when CZ<0.05ppm, CC>0.02ppm, CN<0.1ppm, during CP<0.1ppm, to detection cell to the magnetic valve in wetland ultraviolet sterilization pond transmission executive signal 322.
9. the automatic control system of municipal sewage treatment as claimed in claim 7 or 8, it is characterized in that, also comprise: time measurement module, it comprises is located at settling tank one in sanitary sewage route and settling tank two, be located at the inorganic precipitation pond of foodstuffs industry sewage route, settling tank two, oxidation pond, anaerobic pond, Aerobic Pond and wetland time measurement instrument, for setting sewage time of repose; When the predetermined time of repose of arrival, send prompting sound, remind staff's next step operation progressive;
Ultraviolet sterilization module, it comprises the ultraviolet sterilization lamp being located at ultraviolet sterilization pond, and its ultraviolet wavelength of launching is 200 ~ 275nm, and launching dosage is 13000 ~ 15000 μ W.s/cm2, irradiates 40 ~ 60s at every turn.
10. as the autocontrol method of claim 9 municipal sewage treatment, it is characterized in that, it comprises the following steps:
Step 1: by sanitary sewage, foodstuffs industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2: sanitary sewage flows through the aperture plate with foodstuffs industry sewage water filtration pond one, filters and is greater than the particle of 5 ~ 8cm, and liquid stream is to settling tank one, and described first detection module detects the temperature value of sewage, and is separately converted to numerary signal 101 and is passed to PLC; Described PLC receives numerary signal 101, when the temperature value of settling tank one is less than 25 DEG C, transmits executive signal 111 to heating module; When the temperature value of settling tank one is greater than 28 DEG C, transmit executive signal 112 to heating module; Described heating module, receives executive signal 111, the water in settling tank one is heated to 25 DEG C; Receive executive signal 112, stop heating; Then add the flocculation agent that concentration is 25ppm, arranging time of repose at the time measurement module place at this place is 2 ~ 3d, and effluent stream is to the aperture plate of filtering basin two, and filter the particle being greater than 0.3 ~ 0.8cm, liquid stream is to settling tank two;
Step 3: described second detection module detects the pH value of sewage in settling tank two, and be converted into numerary signal 201 and be passed to PLC; Described PLC receives numerary signal 201, when its pH value be less than 8 or be greater than 9 time, add module to filter material and transmit executive signal 211 or 212; Described filter material adds module, if receive executive signal 211, then adds the alkaline filtering material of predetermined dose; If receive executive signal 212, then add the acid filter material of predetermined dose; Arranging time of repose at the time measurement module place at this place is 2 ~ 3d, and solid and liquid separation are opened, fertilizer producing system delivered to by solid;
Step 4: described 3rd detection module detects granule content CK in the liquid of settling tank two separation, and be converted into numerary signal 301 and be passed to PLC, described PLC receives numerary signal 301, if CK >=0.2ppm, then transmit executive signal 311 to the magnetic valve on settling tank two to filtering basin one passage, if CK<0.2ppm, then transmit executive signal 312 to the magnetic valve on two to the anaerobic pond passage of deep pond; Corresponding magnetic valve receives executive signal and opens its valve;
Step 5: industrial organic sewage flows through the aperture plate in organic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream, to abstraction pool, adopts extraction agent to be respectively: sherwood oil, ethyl acetate: sherwood oil=1:5 in abstraction pool, ethyl acetate: sherwood oil=1:1, ethyl acetate: sherwood oil=5:1, ethyl acetate extracts, and organic layer and water layer are separated by the separation system in abstraction pool, after reclaiming the organic solvent of organic layer, fertilizer producing system delivered to by gained solid; Water layer flow to membrane filtration pond;
Step 6: industrial inorganic effluent stream is through the aperture plate in inorganic filter tank one, filtration is greater than the particle of 5 ~ 8cm, liquid stream is to soda acid pond, in soda acid pond Ca (OH) 2, liquid is made as saturated solution, flow to oxidation pond, through ferrite process in oxidation pond, remove heavy metal ion under the condition of n (Fe2+)/n (M2+)=15 after, liquid stream is to inorganic precipitation pond, add the flocculation agent that concentration is 25ppm, arranging time of repose at the time measurement module place at this place is 2 ~ 3d, after standing 2 ~ 3d, effluent stream is to the aperture plate in inorganic filter pond two, the particle that filtration is greater than 0.05 ~ 0.08,
Step 7: described 3rd detection module detects granule content CK in the liquid after the filtration of inorganic filter pond two, if during CK >=3ppm, to filtering basin to the magnetic valve of oxidation pond passage transmission executive signal 313; If during CK<3ppm, to filtering basin to the magnetic valve of membrane filtration pond passage transmission executive signal 314; Corresponding magnetic valve receives executive signal and opens its valve;
Step 8: described 4th detection module comprises the pressure detection module being located at membrane filtration pond, for the pressure P in detection cell, and is converted into numerary signal 401 and is passed to PLC; Described PLC receives numerary signal 401, transmits executive signal 401 or 402 to voltage regulating module; Described voltage regulating module receives executive signal 401, and ingress's pressure is adjusted to 0.32MPa, and meanwhile, described first detection module detects the temperature value of sewage, and is separately converted to numerary signal 101 and is passed to PLC; Described PLC receives numerary signal 101, when the temperature value in membrane filtration pond is less than 51 DEG C, transmits executive signal 111 to heating module; When the temperature value in membrane filtration pond is greater than 55 DEG C, transmit executive signal 112 to heating module; Described heating module, receives executive signal 111, the water in settling tank one is heated to 25 DEG C; Receive executive signal 112, stop heating, make liquid through 50nm ceramic membrane, receive executive signal 402, exit pressure is adjusted to 0.10MPa, makes liquid stream to anaerobic pond;
Step 9: sewage is in anaerobic pond, arranging time of repose at the time measurement module place at this place is 3 ~ 5d, under the effect of nitrifier and polyP bacteria, leave standstill 3 ~ 5d, flow to Aerobic Pond, arranging time of repose at the time measurement module place at this place is 3 ~ 4d, under the effect of denitrifying bacteria, leave standstill 3 ~ 4d, described 3rd detection module detects nitrogen content CN and phosphorus content CP in the sewage of Aerobic Pond process, and is converted into numerary signal 304 and 305 and is passed to PLC; Described PLC receives numerary signal 304 and 305, if CN >=8ppm, CP >=0.3ppm, then to Aerobic Pond to the magnetic valve of anaerobic pond passage; Transmit executive signal 314; If when CN<8ppm, CP<0.3ppm, then to Aerobic Pond to the magnetic valve of wetland passage transmission executive signal 315; Corresponding magnetic valve receives executive signal and opens its valve; Sewage is under the effect of wetland, and process 10 ~ 15d, flow to detection cell;
Step 10: described 3rd detection module detects the granule content CK of sewage in detection cell, heavy metal content CZ, carbon content CC, nitrogen content CN and phosphorus content CP, and be converted into numerary signal 301,302,303,304 and 305 and be passed to PLC; Described PLC receives numerary signal 301,302 ... 305, if CK>0.2ppm, transmit executive signal 316 to detection cell to settling tank two passage; If CZ>3ppm, to detection cell to the magnetic valve of soda acid pond passage transmission executive signal 317; If 3ppm>CZ>0.05ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 318; If during CC>0.02ppm, to detection cell to the magnetic valve of abstraction pool passage transmission executive signal 319; If during 0.02ppm>CC>0.003ppm, to detection cell to the magnetic valve of membrane filtration pond passage transmission executive signal 320; If CN>8ppm or CP>0.3ppm, to detection cell to the magnetic valve of anaerobic pond passage transmission executive signal 320; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, to detection cell to the magnetic valve of wetland passage transmission executive signal 321; If CK<0.2ppm, when CZ<0.05ppm, CC>0.02ppm, CN<0.1ppm, during CP<0.1ppm, to detection cell to the magnetic valve in wetland ultraviolet sterilization pond transmission executive signal 322; Corresponding magnetic valve receives executive signal and opens its valve;
Step 11: ultraviolet sterilization pond, discharges at every turn after ultraviolet sterilization light irradiation 40 ~ 60s.
CN201510616494.0A 2015-09-25 2015-09-25 Urban sewage treatment system Active CN105366875B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1356275A (en) * 2001-12-28 2002-07-03 万端极 Integrated treating system and process for cleaning sewage
CN104355440A (en) * 2014-10-24 2015-02-18 苏州富奇诺水治理设备有限公司 Sewage classified treatment method
CN204325087U (en) * 2014-12-04 2015-05-13 南京宏博环保实业有限公司 A kind of by the system of pickling steel pipe waste water and sanitary sewage comprehensive treating process
KR20150057658A (en) * 2013-11-20 2015-05-28 가톨릭관동대학교산학협력단 Method of and Apparatus for Wastewater Treatment by Microalgae Membrane Bioreactor Process
CN205115221U (en) * 2015-09-25 2016-03-30 张荣斌 Municipal sewage treatment system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1356275A (en) * 2001-12-28 2002-07-03 万端极 Integrated treating system and process for cleaning sewage
KR20150057658A (en) * 2013-11-20 2015-05-28 가톨릭관동대학교산학협력단 Method of and Apparatus for Wastewater Treatment by Microalgae Membrane Bioreactor Process
CN104355440A (en) * 2014-10-24 2015-02-18 苏州富奇诺水治理设备有限公司 Sewage classified treatment method
CN204325087U (en) * 2014-12-04 2015-05-13 南京宏博环保实业有限公司 A kind of by the system of pickling steel pipe waste water and sanitary sewage comprehensive treating process
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