CN105399266B - The automatic control system and method for a kind of municipal sewage treatment - Google Patents

The automatic control system and method for a kind of municipal sewage treatment Download PDF

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Publication number
CN105399266B
CN105399266B CN201510618870.XA CN201510618870A CN105399266B CN 105399266 B CN105399266 B CN 105399266B CN 201510618870 A CN201510618870 A CN 201510618870A CN 105399266 B CN105399266 B CN 105399266B
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pond
signal
sewage
module
magnetic valve
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CN105399266A (en
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张发鹏
张军保
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South Venture Tianjin Technology Development Co ltd
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Southern Venture (tianjin) Technology Development Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/26Treatment of water, waste water, or sewage by extraction
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281Installations for water purification using chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/722Oxidation by peroxides
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/005Processes using a programmable logic controller [PLC]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/02Temperature
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/03Pressure
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/06Controlling or monitoring parameters in water treatment pH
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/10Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention discloses a kind of automatic control system of municipal sewage treatment and method, including first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, magnetic valve, voltage regulating module, filter material add module, ultraviolet sterilization module, time measurement module and PLC, the first detection module are used for the temperature value for detecting sewage;Second detection module is used for the pH value for detecting sewage;3rd detection module, which is used to detect in sewage, obtains solid content, content of beary metal, phosphorus content, nitrogen content and phosphorus content, the pressure that 4th detection module is used in detection cell, the detected value of above-mentioned module is converted into data signal and is transferred to PLC, the PLC receives data signal, and controls heating module, filter material add module, magnetic valve, voltage regulating module and ultraviolet sterilization module to perform its order;The present invention realizes automatic monitoring and the Automated condtrol of municipal sewage treatment;Substantially increase the efficiency of whole system.

Description

The automatic control system and method for a kind of municipal sewage treatment
Technical field
The present invention relates to sewage treatment area, the automatic control system and method for particularly a kind of municipal sewage treatment.
Background technology
In the last few years, the rate of economic development in China city was relatively fast, produces and lives and caused sewage in city Quantity is also gradually increasing, and compared with developed countries, China's treatment rate of domestic sewage is not also high, and technique has need Kind, management is also relatively backward, and average every 1,500,000 people or so just possesses a sewage treatment plant, and sewage treatment plant also be present Build effective investment utilization rate and processing water rate low problems up to standard.Wastewater treatment in China facility is relative to developed country It is also very backward.
The technique of sewage disposal is more single in the prior art, mainly uses two sections of activated sludge processes, i.e., by sewage conduct, Sewage treatment plant is considered as a sewage disposal system, including:Self-priming jet aeration machine, lateral flow domatic inclined-plate clarifying basin, nothing The sludge suspension type biologic packing material of support.Its concrete methods of realizing is:A section high load capacities, B section underloads, two sections of A, B are returned respectively Stream, makes full use of the microorganism in it, it is played one's part to the full, and creates good environmental condition and is easy to what different times grew The growth of superior microorganism population.But this processing method, to contaminating effect stability, but cost is higher, and clearance is relatively low, BOD5 clearances are only that 90%, COD clearances are only 80%.
Moreover, existing municipal sewage treatment, dependent on control manually, cost is relatively low, but control error easily occurs and lead The situation that cause processing is not good at, the detection of existing urban sewage treatment system, mostly relies on the judgement of staff, accurately Spend low, efficiency is low.
The content of the invention
The goal of the invention of the present invention is:For above-mentioned problem, there is provided one kind has high clearance, meets various regions City needs, can efficiently, a kind of municipal sewage treatment automatic control system of all kinds of sewage of processing of high intelligent automation And method.
The technical solution adopted by the present invention is as follows:
A kind of automatic control system of municipal sewage treatment, it is characterised in that the urban sewage treatment system will live Sewage, trade effluent separate collection, trade effluent again separate food industry sewage, industrial inorganic sewage and industrial organic sewage Collect;The sanitary sewage and trade effluent of separate collection are respectively by sanitary sewage pretreatment route and trade effluent pretreatment road Line is pre-processed, and food industry sewage is pre-processed by sanitary sewage pretreatment route, industrial inorganic sewage and industry Organic sewage is pre-processed by industrial inorganic sewage disinfection treatment route and industrial organic sewage pretreatment route respectively;It is described Sanitary sewage pre-processes route and trade effluent pretreatment route is intersected in total processing route;Total processing route includes order Anaerobic pond, Aerobic Pond, wetland, detection cell and the ultraviolet sterilization pond of connection, the sanitary sewage pretreatment route include order and connected The filtering ponds one connect, sedimentation basin one, filtering ponds two and sedimentation basin two, the food industry sewage flow through sanitary sewage pretreatment road Line, carry out the pretreatment same with sanitary sewage, including the filtering ponds one being linked in sequence, sedimentation basin one, filtering ponds two and precipitation Pond two, the industrial inorganic sewage disinfection treatment route include the inorganic filter pond one that is linked in sequence, soda acid pond, and oxidation pond is inorganic Sedimentation basin, inorganic filter pond two and membrane filtration pond, the industrial organic sewage pretreatment route include the organic filter being linked in sequence Pond and abstraction pool, industrial organic sewage pretreatment route are intersected in membrane filtration pond with industrial inorganic sewage disinfection treatment route;
Its feature also includes first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating Module, voltage regulating module, filter material add module, magnetic valve and PLC, the magnetic valve is at each feeder connection, and described first Detection module includes the temperature monitor located at sedimentation basin one, inorganic precipitation pond and membrane filtration pond, for detecting the temperature value of sewage, And it is separately converted to data signal 101 and is transferred to PLC;Second detection module includes the pH detectors located at sedimentation basin two, For detecting the pH value of sewage, and it is converted into data signal 201 and is transferred to PLC;3rd detection module is included located at precipitation Pond two and the particle detector in inorganic filter pond two, the nitrogen content detector and phosphorus content detector of Aerobic Pond, and detection cell Particle detector, heavy metal detector, phosphorus content detector, nitrogen content detector and phosphorus content detector, for detecting sewage In granule content CK, content of beary metal CZ, phosphorus content CC, nitrogen content CNWith phosphorus content CP, and be converted into data signal 301, 302nd, 303,304 and 305 it is transferred to PLC;4th detection module includes the pressure detection module located at membrane filtration pond, for examining The pressure surveyed in pond, and be converted into data signal 401 and be transferred to PLC;
The PLC respectively with first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating Module, voltage regulating module, filter material add module are connected with magnetic valve;For receiving data signal 101, when sedimentation basin one or inorganic heavy The temperature value in shallow lake pond be less than 25 DEG C, or membrane filtration pond temperature value be less than 51 DEG C when, to heating module transmission perform signal 111;When Sedimentation basin one or the temperature value in inorganic precipitation pond are more than 28 DEG C, or when the temperature value in membrane filtration pond is more than 55 DEG C, are passed to heating module Pass and perform signal 112;Data signal 201 is received, when its pH value is less than 8 or more than 9, letter is performed to filter material add module transmission Numbers 211 or 212;Data signal 301,302,303,304 and 305 is received, after judgement and calculating, to corresponding magnetic valve transmission Perform signal 311,312 ... 322;Data signal 401 is received, signal 401 or 402 is performed to voltage regulating module transmission;
The heating module, receive and perform signal 111, the water in sedimentation basin 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 and perform signal 112, stop heating;The filter material add module, receive and perform Signal 211, then add the alkaline filtering material of predetermined close;Receive and perform signal 212, then add the acid filter material of predetermined close;Institute State corresponding magnetic valve and receive corresponding execution signal, then open its valve;The voltage regulating module includes being located at the import of membrane filtration pond Place and the pressure regulating pump in exit, signal 401 is performed for receiving, entrance pressure is adjusted to 0.32MPa, passed liquid through 50nm ceramic membranes, receive and perform signal 402, exit pressure is adjusted to 0.10MPa.
Further, PLC is as follows to corresponding magnetic valve transmission execution signal 311,312 ... 322 detailed processes:
In sedimentation basin two:PLC receives data signal 301, if CK>=0.2ppm, then to sedimentation basin two to the passage of filtering ponds one On magnetic valve transmission perform signal 311, if CK<0.2ppm, then to sedimentation basin two to anaerobic pond passage on magnetic valve transmission Perform signal 312;
In inorganic filter pond two:If CKDuring >=3ppm, the magnetic valve transmission to inorganic filter pond two to oxidation pond passage is held Row signal 313;If CK<During 3ppm, the magnetic valve transmission to inorganic filter pond two to membrane filtration pond passage performs signal 314;
In Aerobic Pond:If CN>=8ppm, CP>=0.3ppm, then performed to Aerobic Pond to the magnetic valve transmission of anaerobic pond passage Signal 314;If CN<8ppm, CP<During 0.3ppm, then signal 315 is performed to Aerobic Pond to the magnetic valve transmission of wetland passage;
In detection cell:If CK>0.2ppm, signal 316 is performed to detection cell to the passage transmission of sedimentation basin two;If CZ>3ppm, Signal 317 is performed to detection cell to the magnetic valve transmission of soda acid pond passage;If 3ppm>CZ>0.05ppm, to detection cell to membrane filtration The magnetic valve transmission of pond passage performs signal 318;If CC>During 0.02ppm, to detection cell to the magnetic valve transmission of abstraction pool passage Perform signal 319;If 0.02ppm>CC>During 0.003ppm, signal is performed to detection cell to the magnetic valve transmission of membrane filtration pond passage 320;
If CN>8ppm or CP>0.3ppm, signal 320 is performed to detection cell to the magnetic valve transmission of anaerobic pond passage;If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, signal 321 is performed to detection cell to the magnetic valve transmission of wetland passage;
If CK<0.2ppm, CZ<0.05ppm, CC>During 0.02ppm, CN<0.1ppm, CP<During 0.1ppm, to detection cell to purple The magnetic valve transmission in outer sterilizing pond performs signal 322.
Further, in addition to:Time measurement module, it includes the sedimentation basin one being located in sanitary sewage route and precipitation Pond two, the time measurement instrument of anaerobic pond, Aerobic Pond and wetland, for setting sewage time of repose;When reaching predetermined stand Between, prompting sound is sent, reminds staff to improve in next step and operates.
Further, in addition to:Ultraviolet sterilization module, it includes the ultraviolet sterilization lamp located at ultraviolet sterilization pond, and it is launched The ultraviolet wavelength gone out is 200~275nm, and transmitting dosage is 13000~15000 μ W.s/cm2, 40~60s is irradiated every time.
A kind of autocontrol method of the automatic control system of municipal sewage treatment, it comprises the following steps:
Step 1:By sanitary sewage, food industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2:Sanitary sewage and food industry sewage flow through the aperture plate of filtering ponds one, and filtering is more than 5~8cm particle, Liquid flow to sedimentation basin one, the temperature value of the first detection module detection sewage, and is separately converted to data signal 101 and transmits To PLC;The PLC receives data signal 101, when the temperature value of sedimentation basin one is less than 25 DEG C, is performed to heating module transmission Signal 111;When the temperature value of sedimentation basin one is more than 28 DEG C, signal 112 is performed to heating module transmission;The heating module, Receive and perform signal 111, the water in sedimentation basin one is heated to 25 DEG C;Receive and perform signal 112, stop heating;It is subsequently added into Concentration is 25ppm flocculation agent, and it is 2~3d that time of repose is set at time measurement module in this place, and sewage flow to filtering ponds Two aperture plate, particle of the filtering more than 0.3~0.8cm, liquid flow to sedimentation basin two;
Step 3:The pH value of sewage in the second detection module detection sedimentation basin two, and be converted into data signal 201 and pass It is handed to PLC;The PLC receives data signal 201, when its pH value is less than 8 or more than 9, is performed to the transmission of filter material add module Signal 211 or 212;The filter material add module, signal 211 is performed if receiving, adds the alkaline filtering material of predetermined close;If connect Row signal 212 is accepted, then adds the acid filter material of predetermined close;It is 2 that time of repose is set at time measurement module in this place ~3d, solid and liquid are separated, and solid delivers to fertilizer producing system;
Step 4:Granule content C in the liquid that the 3rd detection module detection sedimentation basin two separatesK, and it is converted into numeral Signal 301 is transferred to PLC, and the PLC receives data signal 301, if CK>=0.2ppm is then logical to sedimentation basin two to filtering ponds one Magnetic valve transmission on road performs signal 311, if CK<0.2ppm, then to sedimentation basin two to anaerobic pond passage on magnetic valve pass Pass and perform signal 312;Corresponding magnetic valve receives execution signal and opens its valve;
Step 5:Industrial organic sewage stream passes through the aperture plate in organic filter tank one, particle of the filtering more than 5~8cm, liquid flow To abstraction pool, it is respectively using extractant in abstraction pool:Petroleum ether, ethyl acetate:Petroleum ether=1:5, ethyl acetate:Petroleum ether =1:1, ethyl acetate:Petroleum ether=5:1, ethyl acetate is extracted, and the piece-rate system in abstraction pool is by organic layer and water layer Separate, after the organic solvent recovery of organic layer, gained solid delivers to fertilizer producing system;Water layer flow to membrane filtration pond;
Step 6:Industrial inorganic sewage stream passes through the aperture plate in inorganic filter tank one, particle of the filtering more than 5~8cm, liquid flow To soda acid pond, in soda acid pond with Ca (OH)2Liquid is made as saturated solution, flow to oxidation pond, ferrite is passed through in oxidation pond Method, in n (Fe2+)/n(M2+After removing heavy metal ion under conditions of)=15, liquid flow to inorganic precipitation pond, adds concentration and is 25ppm flocculation agent, it be 2~3d that time of repose is set at time measurement module in this place, and sewage flow to nothing after 2~3d of standing The aperture plate of machine filtering ponds two, particle of the filtering more than 0.05~0.08cm;
Step 7:Granule content C in liquid after the filtering of 3rd detection module detection inorganic filter pond twoKIf CK≥ During 3ppm, signal 313 is performed to the magnetic valve transmission to inorganic filter pond two to oxidation pond passage;If CK<During 3ppm, to inorganic The magnetic valve transmission of filtering ponds two to membrane filtration pond passage performs signal 314;Corresponding magnetic valve, which receives, to be performed signal and opens it Valve;
Step 8:4th detection module includes the pressure detection module located at membrane filtration pond, for the pressure in detection cell P, and be converted into data signal 401 and be transferred to PLC;The PLC receives data signal 401, and signal is performed to voltage regulating module transmission 401 or 402;The voltage regulating module, which receives, performs signal 401, and entrance pressure is adjusted into 0.32MPa, meanwhile, described first Detection module detects the temperature value of sewage, and is separately converted to data signal 101 and is transferred to PLC;The PLC receives data signal 101, when the temperature value in membrane filtration pond is less than 51 DEG C, signal 111 is performed to heating module transmission;When the temperature value in membrane filtration pond is more than At 55 DEG C, signal 112 is performed to heating module transmission;The heating module, receive and perform signal 111, by sedimentation basin one Water is heated to 25 DEG C;Receive and perform signal 112, stop heating, pass liquid through 50nm ceramic membranes, receive and perform Signal 402, exit pressure is adjusted to 0.10MPa, liquid is flow to anaerobic pond;
Step 9:It is 3~5d that sewage sets time of repose in Aerobic Pond, at time measurement module in this place, is being nitrified In the presence of bacterium and polyP bacteria, 3~5d is stood, flow to anaerobic pond, it is 3 that time of repose is set at time measurement module in this place ~4d, in the presence of denitrifying bacterium, 3~4d is stood, the 3rd detection module detection is passed through in the sewage of Aerobic Pond processing Nitrogen content CNWith phosphorus content CP, and be converted into data signal 304 and 305 and be transferred to PLC;The PLC receives the He of data signal 304 305, if CN>=8ppm, CP>=0.3ppm, then the magnetic valve to Aerobic Pond to anaerobic pond passage, transmits and performs signal 314;If CN< 8ppm, CP<During 0.3ppm, then signal 315 is performed to Aerobic Pond to the magnetic valve transmission of wetland passage;Corresponding magnetic valve receives Perform signal and open its valve;Sewage handles 10~15d, flow to detection cell in the presence of wetland;
Step 10:The granule content C of sewage in the 3rd detection module detection detection cellK, content of beary metal CZ, it is carbon containing Measure CC, nitrogen content CNWith phosphorus content CP, and be converted into data signal 301,302,303,304 and 305 and be transferred to PLC;The PLC Data signal 301,302 ... 305 are received, if CK>0.2ppm, signal 316 is performed to detection cell to the passage transmission of sedimentation basin two; If CZ>3ppm, signal 317 is performed to detection cell to the magnetic valve transmission of soda acid pond passage;If 3ppm>CZ>0.05ppm, to detection The magnetic valve transmission of pond to membrane filtration pond passage performs signal 318;If CC>During 0.02ppm, the electricity to detection cell to abstraction pool passage Magnet valve transmission performs signal 319;If 0.02ppm>CC>During 0.003ppm, the magnetic valve transmission to detection cell to membrane filtration pond passage Perform signal 320;If CN>8ppm or CP>0.3ppm, signal 320 is performed to detection cell to the magnetic valve transmission of anaerobic pond passage; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, signal 321 is performed to detection cell to the magnetic valve transmission of wetland passage; If CK<0.2ppm, CZ<0.05ppm, CC>During 0.02ppm, CN<0.1ppm, CP<During 0.1ppm, to detection cell to ultraviolet sterilization pond Magnetic valve transmission perform signal 322;Corresponding magnetic valve receives execution signal and opens its valve;
Step 11:Ultraviolet sterilization pond, discharged every time after 40~60s of ultraviolet sterilization light irradiation.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
1st, by the way of physical treatment, chemical treatment and biological treatment are combined, targetedly handled, environment Close friend, the ecosystem of surrounding will not be impacted, Conventional pollution can not only be got rid of in combination with the method for processing, The clearance of various pollutants is improved simultaneously, has prevented secondary pollution;
2nd, relevant parameter is measured using detecting instrument, precision is high, and can measure in real time, has using to the system Effectively controlled;
Using the first measurement module, the second measurement module, the 3rd measurement module and the 4th measurement module, to the temperature in pond Degree, pH value, solid content, content of beary metal, phosphorus content, nitrogen content and phosphorus content are measured in real time, and measurement accuracy is high, Measurement above parameter in real time, can effectively realize the control to whole system;
3rd, operating efficiency is improved, operation is easier;
Time measurement module is increased newly, sewage needs to stand a period of time after relevant treatment, and staff only need to be corresponding Time measurement instrument on time of repose is set, the time one arrives, and the time measurement instrument can send prompting sound, reminds staff to carry out Operate in next step, deliberately go to remember time of repose without personnel, eliminate many work for staff, and work can be prevented Personnel influence treatment effect because forgeing, misremembering.
4th, to the automatic business processing of municipal sewage, substantial amounts of human resources are eliminated;
With PLC chip as control chip, the data signal of each detection module is received, by the judgement and calculating of inside, Corresponding execution module is controlled to perform task;Whole process automaticity is high.
Brief description of the drawings
Fig. 1 is the automatic control system schematic diagram of municipal sewage treatment;
Fig. 2 is influence curve figure of the temperature to clearance of municipal sewage treatment;
Fig. 3 is influence curve figure of the pH value to clearance of municipal sewage treatment;
Fig. 4 is influence curve figure of the concentration to clearance of municipal sewage treatment;
Fig. 5 is influence curve figure of the mol ratio to clearance of municipal sewage treatment;
Fig. 6 is influence curve figure of the pore size to clearance of the inorganic ceramic membrane of municipal sewage treatment;
Fig. 7 be municipal sewage treatment ultraviolet sterilization pond in the time to the influence curve figure of clearance.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary), unless specifically stated otherwise, Replaced by other equivalent or with similar purpose alternative features.I.e., unless specifically stated otherwise, each feature is a series of An example in equivalent or similar characteristics.
As shown in figure 1, urban sewage treatment system, by sanitary sewage, trade effluent separate collection, trade effluent again will food Product trade effluent, industrial inorganic sewage and industrial organic sewage separate collection;The sanitary sewage and trade effluent of separate collection point Not Jing Guo sanitary sewage pretreatment route and trade effluent pretreatment route pre-processed;Food industry sewage is dirty by life Water pretreatment route is pre-processed, and industrial inorganic sewage and industrial organic sewage pass through industrial inorganic sewage disinfection treatment road respectively Line and industrial organic sewage pretreatment route are pre-processed;The sanitary sewage pretreatment route and trade effluent pretreatment road Line is intersected in total processing route, total to handle anaerobic pond, Aerobic Pond, wetland, detection cell that route includes being linked in sequence and ultraviolet go out Bacterium pond.
Sanitary sewage pretreatment route includes the filtering ponds one being linked in sequence, sedimentation basin one, filtering ponds two and sedimentation basin two, Being provided with aperture plate in filtering ponds one, the grid gap length of aperture plate be 5cm in filtering ponds one, provided with separating filter plate in sedimentation basin one, Aperture plate can be provided with by separation of solid and liquid by separating filter plate in filtering ponds two, the grid gap length of aperture plate is 0.3cm in filtering ponds two, The outlet of sedimentation basin two is provided with detection means, can detect solid particle size in filtrate, and sedimentation basin two is provided with to the list of filtering ponds one To passage, sedimentation basin two is connected with fertilizer producing system;Sanitary sewage flows through the aperture plate of filtering ponds one, filters out the particle more than 5cm, liquid Body flow to sedimentation basin one, is provided with thermostat in sedimentation basin one, and temperature maintains 25 DEG C of scope in thermostat holding sedimentation basin one It is interior, the flocculation agent that concentration is 25ppm is added in the sewage into sedimentation basin one, stands 2d, flocculation agent is 1 by mol ratio:1 ZnCl2Formed with sodium carboxymethylcellulose, can largely get rid of COD (COD) material in water, including also Immunogenic substance such as, nitrite, sulfide, ferrous salt, detergent etc., temperature, concentration, mol ratio and the removal of flocculation agent Shown in the curve map 2 of effect, Fig. 3, Fig. 4 and Fig. 5.
Separation filter plate in sedimentation basin one separates solid, floccule etc. with liquid, and the liquid after separation flow to filtering ponds Two aperture plate, the particle more than 0.3cm is filtered out, liquid flow to sedimentation basin two, and after standing 2d, solid and liquid are separated; The content of particulate matter in liquid of the detecting system detection after the separation of sedimentation basin two in sedimentation basin two more than 0.3cm, Work as granule content>During 0.2ppm, liquid flows back into filtering ponds one by half-duplex channel;Work as granule content<During 0.2ppm, liquid flow To anaerobic pond;The solid matter separated by sedimentation basin two is transported to fertilizer producing system, carries out the processing and fabricating of fertilizer.
Food industry sewage flows through sanitary sewage pretreatment route, carries out the pretreatment same with sanitary sewage.Including suitable The filtering ponds one of sequence connection, sedimentation basin one, filtering ponds two and sedimentation basin two are provided with aperture plate in filtering ponds one, grid in filtering ponds one The grid gap length of net is 5cm, is provided with separation filter plate in sedimentation basin one, and separation filter plate can be by separation of solid and liquid, in filtering ponds two Provided with aperture plate, the grid gap length of aperture plate is 0.3cm in filtering ponds two, and the outlet of sedimentation basin two is provided with detection means, can detected Solid particle size in filtrate, sedimentation basin two are provided with to the half-duplex channel of filtering ponds one, sedimentation basin two and are connected with fertilizer producing system;Life Sewage flows through the aperture plate of filtering ponds one, filters out the particle more than 5cm, and liquid flow to sedimentation basin one, perseverance is provided with sedimentation basin one Warm device, thermostat keep that in the range of temperature maintains 25 DEG C in sedimentation basin one, concentration is added in the sewage into sedimentation basin one For 25ppm flocculation agent, 2d is stood, flocculation agent is 1 by mol ratio:1 ZnCl2Formed with sodium carboxymethylcellulose, Neng Gou great Amount gets rid of COD (COD) material in water, nitrite, sulfide, ferrous iron including reducing substances such as Salt, detergent etc., shown in the temperature of flocculation agent, concentration, the curve map 2 of mol ratio and removal effect, Fig. 3 and Fig. 4,
Separation filter plate in sedimentation basin one separates solid, floccule etc. with liquid, and the liquid after separation flow to filtering ponds Two aperture plate, the particle more than 0.3cm is filtered out, liquid flow to sedimentation basin two, and after standing 2d, solid and liquid are separated; The content of particulate matter in liquid of the detecting system detection after the separation of sedimentation basin two in sedimentation basin two more than 0.3cm, Work as granule content>During 0.2ppm, liquid flows back into filtering ponds one by half-duplex channel;Work as granule content<During 0.2ppm, liquid flow To anaerobic pond;The solid matter separated by sedimentation basin two is transported to fertilizer producing system, carries out the processing and fabricating of fertilizer.
Industrial inorganic sewage disinfection treatment route includes the inorganic filter pond one that is linked in sequence, soda acid pond, and oxidation pond is inorganic heavy Shallow lake pond, inorganic filter pond two and membrane filtration pond.The grid gap length of aperture plate is 5~8cm in inorganic filter pond one, and industrial inorganic is dirty Current pass through the aperture plate in inorganic filter tank one, and after filtering out the particle more than 5~8cm, liquid flow to soda acid pond.Used in soda acid pond Ca(OH)2Liquid is made as saturated solution, saturated solution flow to oxidation pond, ferrite process is passed through in oxidation pond, in n (Fe2+)/ n(M2+After removing heavy metal ion under conditions of)=15, liquid flow to inorganic precipitation pond.Sewage is at inorganic precipitation pond, Xiang Chi Interior to add the inorganic flocculation agent that concentration is 25ppm, inorganic flocculation agent is 1 by mol ratio:1:0.4:1.2 chitosan, Na2B4O7·10H2O, MgSO4·7H2O, AlCl3·6H2O is formed, and stands 2~3d, and the inorganic flocculation agent can be got rid of largely Heavy metal ion, sewage is by inorganic precipitation pond, after inorganic flocculation agent processing, getting rid of substantial amounts of heavy metal ion Afterwards, liquid flow to inorganic filter pond two, is provided with filter screen in inorganic filter pond two, and the grid gap length of filter screen is 0.05cm, liquid Body passes through the filtering of grid, filters out the particle more than 0.05cm, the outlet in inorganic filter pond two is provided with detection means, can detected Contain heavy metal amount in filtrate, inorganic filter pond two, which is provided with to the half-duplex channel of oxidation pond, detection means detection, passes through inorganic filter Contain heavy metal amount in liquid after the filtering of pond two, when containing heavy metal amount>During 3ppm, liquid flows back to oxidation pond;When containing heavy metal amount< During 3ppm, liquid flow to membrane filtration pond.
The inlet and outlet in membrane filtration pond is equipped with pressure regulating pump, pressure regulating pump of the sewage Jing Guo the import of membrane filtration pond, pressure is adjusted For 0.32MPa, membrane filtration pond is provided with thermostat, can maintain temperature constant in the range of 51 DEG C, and it is more that 50nm is provided with membrane filtration pond Passage industrial inorganic ceramic membrane, sewage can further remove heavy metal ion compound and polymerization after inorganic ceramic membrane Thing, influence of the temperature to clearance is as shown in Figure 6 in the pore size of inorganic ceramic membrane and pond.
Liquid after filtering passes through the pressure regulating pump of membrane filtration pond outlet, pressure is adjusted into 0.10MPa, liquid flow to anaerobism Pond.
Industrial organic sewage pretreatment route includes the organic filter pond being linked in sequence and abstraction pool, industrial organic sewage are pre- Processing route is intersected in membrane filtration pond with industrial inorganic sewage disinfection treatment route.Aperture plate, organic filter pond are provided with organic filter pond The grid gap length of interior aperture plate is 5cm, and sewage is by the aperture plate in organic filter pond, particle of the filtering more than 5cm.After filtering Sewage flow to abstraction pool, sequential extractions are passed through in abstraction pool, are respectively using extractant:Petroleum ether, ethyl acetate:Stone Oily ether=1:5, ethyl acetate:Petroleum ether=1:1, ethyl acetate:Petroleum ether=5:1, ethyl acetate is extracted, and abstraction pool is set There is piece-rate system, organic layer can be separated with water layer, after separating, after the organic solvent recovery of organic layer, gained solid is sent To fertilizer producing system;Water layer flow to membrane filtration pond.
Nitrifier and polyP bacteria are provided with Aerobic Pond, sewage is quiet in the presence of nitrifier and polyP bacteria in Aerobic Pond Put 3d, ammoxidation can be nitrous acid by nitrifier, then by it is nitrite-oxidizing be nitric acid, reaction equation is as follows:
2NH4 ++3O2→2NO2-+4H++2H2O
2NO2-+O2→2NO3-
PolyP bacteria is gone out after can phosphorus be assembled from water, and the sewage handled by nitrifier and polyP bacteria flow to anaerobism Pond.Denitrifying bacterium is provided with anaerobic pond, ammonolysis craft can be turned into nitrogen by denitrifying bacterium, then is released back into air, and reaction equation is such as Under:
2NO3-+10e-+12H+→N2+6H2O
Delivery port is provided with detection means in Aerobic Pond, can detect nitrogen content and phosphorus content in water, and Aerobic Pond is provided with to anaerobism The half-duplex channel in pond, detection means detection pass through nitrogen content and phosphorus content in the sewage that Aerobic Pond is handled, work as nitrogen content>8ppm, Phosphorus content>During 0.3ppm, liquid flows back into anaerobic pond by half-duplex channel;Work as nitrogen content<8ppm, phosphorus content<During 0.3ppm, liquid Body flow to wetland.
The plant of wetland plantation includes 26% typha angustifolia, 22% cattail, 32% reed and 20% chlorella, These plants can effectively remove carbonaceous material, nitrogen substance and phosphorus containg substances in water removal, and sewage is in the presence of wetland, place 10d is managed, flow to detection cell.
Detection cell leads to provided with the individual event for respectively leading to sedimentation basin two, soda acid pond, membrane filtration pond, abstraction pool, anaerobic pond and wetland Road;Detection means is provided with the detection cell, size in water can be detected>The content of 0.3cm solid particle, containing heavy metal Amount, phosphorus content, nitrogen content and phosphorus content.The size in water body after the sewage of multi step strategy distinguishes detection process in detection cell >The content of 0.3cm solid particle, containing heavy metal amount, phosphorus content, nitrogen content and phosphorus content;When the content of solid particle> During 0.2ppm, liquid flows back to filtering ponds one;When containing heavy metal amount>During 3ppm, liquid flows back into soda acid pond, works as 3ppm>Containing a huge sum of money Category amount>During 0.05ppm, liquid flows back into membrane filtration Chi Chi;Work as phosphorus content>During 0.02ppm, liquid flows back into abstraction pool, when 0.02ppm>Phosphorus content>During 0.003ppm, liquid flows back into membrane filtration pond;Work as nitrogen content>8ppm or phosphorus content>During 0.3ppm, liquid Body flows back into anaerobic pond;Work as 8ppm>Nitrogen content>0.1ppm, or 0.3ppm>Phosphorus content>During 0.1ppm, liquid flows back into wetland; Work as solid content<0.2ppm, containing heavy metal amount<0.05ppm, phosphorus content>During 0.02ppm, nitrogen content<0.1ppm, it is phosphorous Amount<During 0.1ppm, liquid flow to ultraviolet sterilization pond.
Ultraviolet sterilization pond, wavelength 200nm, the μ W.s/cm of dosage 13000 can be sent2In the range of ultraviolet waves.At multistep Water after reason is in wavelength 200nm, the μ W.s/cm of dosage 130002In the range of, handle 40s after can eliminate 99% germ, post Infested, viral etc., the time is as shown in Figure 7 to the influence curve of clearance.
Water after multi step strategy can discharge.
A kind of automatic control system of municipal sewage treatment, it is characterised in that the urban sewage treatment system will live Sewage, trade effluent separate collection, trade effluent again separate food industry sewage, industrial inorganic sewage and industrial organic sewage Collect;The sanitary sewage and trade effluent of separate collection are respectively by sanitary sewage pretreatment route and trade effluent pretreatment road Line is pre-processed, and food industry sewage is pre-processed by sanitary sewage pretreatment route, industrial inorganic sewage and industry Organic sewage is pre-processed by industrial inorganic sewage disinfection treatment route and industrial organic sewage pretreatment route respectively;It is described Sanitary sewage pre-processes route and trade effluent pretreatment route is intersected in total processing route;Total processing route includes order Anaerobic pond, Aerobic Pond, wetland, detection cell and the ultraviolet sterilization pond of connection, the sanitary sewage pretreatment route include order and connected The filtering ponds one connect, sedimentation basin one, filtering ponds two and sedimentation basin two, the food industry sewage flow through sanitary sewage pretreatment road Line, carry out the pretreatment same with sanitary sewage, including the filtering ponds one being linked in sequence, sedimentation basin one, filtering ponds two and precipitation Pond two, the industrial inorganic sewage disinfection treatment route include the inorganic filter pond one that is linked in sequence, soda acid pond, and oxidation pond is inorganic Sedimentation basin, inorganic filter pond two and membrane filtration pond, the industrial organic sewage pretreatment route include the organic filter being linked in sequence Pond and abstraction pool, industrial organic sewage pretreatment route are intersected in membrane filtration pond with industrial inorganic sewage disinfection treatment route;
Its feature also includes first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating Module, voltage regulating module, filter material add module, magnetic valve and PLC, the magnetic valve is at each feeder connection, and described first Detection module includes the temperature monitor located at sedimentation basin one, inorganic precipitation pond and membrane filtration pond, for detecting the temperature value of sewage, And it is separately converted to data signal 101 and is transferred to PLC;Second detection module includes the pH detectors located at sedimentation basin two, For detecting the pH value of sewage, and it is converted into data signal 201 and is transferred to PLC;3rd detection module is included located at precipitation Pond two and the particle detector in inorganic filter pond two, the nitrogen content detector and phosphorus content detector of Aerobic Pond, and detection cell Particle detector, heavy metal detector, phosphorus content detector, nitrogen content detector and phosphorus content detector, for detecting sewage In granule content CK, content of beary metal CZ, phosphorus content CC, nitrogen content CNWith phosphorus content CP, and be converted into data signal 301, 302nd, 303,304 and 305 it is transferred to PLC;4th detection module includes the pressure detection module located at membrane filtration pond, for examining The pressure surveyed in pond, and be converted into data signal 401 and be transferred to PLC;
The PLC respectively with first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating Module, voltage regulating module, filter material add module are connected with magnetic valve;For receiving data signal 101, when sedimentation basin one or inorganic heavy The temperature value in shallow lake pond be less than 25 DEG C, or membrane filtration pond temperature value be less than 51 DEG C when, to heating module transmission perform signal 111;When Sedimentation basin one or the temperature value in inorganic precipitation pond are more than 28 DEG C, or when the temperature value in membrane filtration pond is more than 55 DEG C, are passed to heating module Pass and perform signal 112;Data signal 201 is received, when its pH value is less than 8 or more than 9, letter is performed to filter material add module transmission Numbers 211 or 212;Data signal 301,302,303,304 and 305 is received, after judgement and calculating, to corresponding magnetic valve transmission Perform signal 311,312 ... 322;Data signal 401 is received, signal 401 or 402 is performed to voltage regulating module transmission;
The heating module, receive and perform signal 111, the water in sedimentation basin 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 and perform signal 112, stop heating;The filter material add module, receive and perform Signal 211, then add the alkaline filtering material of predetermined close;Receive and perform signal 212, then add the acid filter material of predetermined close;Institute State corresponding magnetic valve and receive corresponding execution signal, then open its valve;The voltage regulating module includes being located at the import of membrane filtration pond Place and the pressure regulating pump in exit, signal 401 is performed for receiving, entrance pressure is adjusted to 0.32MPa, passed liquid through 50nm ceramic membranes, receive and perform signal 402, exit pressure is adjusted to 0.10MPa.
PLC is as follows to corresponding magnetic valve transmission execution signal 311,312 ... 322 detailed processes:
In sedimentation basin two:PLC receives data signal 301, if CK>=0.2ppm, then to sedimentation basin two to the passage of filtering ponds one On magnetic valve transmission perform signal 311, if CK<0.2ppm, then to sedimentation basin two to anaerobic pond passage on magnetic valve transmission Perform signal 312;
In inorganic filter pond two:If CKDuring >=3ppm, the magnetic valve transmission to inorganic filter pond two to oxidation pond passage is held Row signal 313;If CK<During 3ppm, the magnetic valve transmission to inorganic filter pond two to membrane filtration pond passage performs signal 314;
In Aerobic Pond:If CN>=8ppm, CP>=0.3ppm, the then magnetic valve to Aerobic Pond to anaerobic pond passage
Transmit and perform signal 314;If CN<8ppm, CP<During 0.3ppm, then to Aerobic Pond to the magnetic valve transmission of wetland passage Perform signal 315;
In detection cell:If CK>0.2ppm, signal 316 is performed to detection cell to the passage transmission of sedimentation basin two;If CZ>3ppm, Signal 317 is performed to detection cell to the magnetic valve transmission of soda acid pond passage;If 3ppm>CZ>0.05ppm, to detection cell to membrane filtration The magnetic valve transmission of pond passage performs signal 318;If CC>During 0.02ppm, to detection cell to the magnetic valve transmission of abstraction pool passage Perform signal 319;If 0.02ppm>CC>During 0.003ppm, signal is performed to detection cell to the magnetic valve transmission of membrane filtration pond passage 320;
If CN>8ppm or CP>0.3ppm, signal 320 is performed to detection cell to the magnetic valve transmission of anaerobic pond passage;If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, signal 321 is performed to detection cell to the magnetic valve transmission of wetland passage;If CK<0.2ppm, CZ<0.05ppm, CC>During 0.02ppm, CN<0.1ppm, CP<During 0.1ppm, to detection cell to ultraviolet sterilization pond Magnetic valve transmission performs signal 322.
Also include:Time measurement module, it includes the sedimentation basin one and sedimentation basin two being located in sanitary sewage route, anaerobism The time measurement instrument in pond, Aerobic Pond and wetland, for setting sewage time of repose;When reaching predetermined time of repose, send and carry Awake sound, remind staff to improve in next step and operate.
Also include:Ultraviolet sterilization module, it includes the ultraviolet sterilization lamp located at ultraviolet sterilization pond, its ultraviolet launched Wavelength is 200~275nm, and transmitting dosage is 13000~15000 μ W.s/cm2, 40~60s is irradiated every time.
A kind of autocontrol method of municipal sewage treatment, it includes:
Step 1:By sanitary sewage, food industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2:Sanitary sewage and food industry sewage flow through the aperture plate of filtering ponds one, and filtering is more than 5~8cm particle, Liquid flow to sedimentation basin one, the temperature value of the first detection module detection sewage, and is separately converted to data signal 101 and transmits To PLC;The PLC receives data signal 101, when the temperature value of sedimentation basin one is less than 25 DEG C, is performed to heating module transmission Signal 111;When the temperature value of sedimentation basin one is more than 28 DEG C, signal 112 is performed to heating module transmission;The heating module, Receive and perform signal 111, the water in sedimentation basin one is heated to 25 DEG C;Receive and perform signal 112, stop heating;It is subsequently added into Concentration is 25ppm flocculation agent, and it is 2~3d that time of repose is set at time measurement module in this place, and sewage flow to filtering ponds Two aperture plate, particle of the filtering more than 0.3~0.8cm, liquid flow to sedimentation basin two;
Step 3:The pH value of sewage in the second detection module detection sedimentation basin two, and be converted into data signal 201 and pass It is handed to PLC;The PLC receives data signal 201, when its pH value is less than 8 or more than 9, is performed to the transmission of filter material add module Signal 211 or 212;The filter material add module, signal 211 is performed if receiving, adds the alkaline filtering material of predetermined close;If connect Row signal 212 is accepted, then adds the acid filter material of predetermined close;It is 2 that time of repose is set at time measurement module in this place ~3d, solid and liquid are separated, and solid delivers to fertilizer producing system;
Step 4:Granule content C in the liquid that the 3rd detection module detection sedimentation basin two separatesK, and it is converted into numeral Signal 301 is transferred to PLC, and the PLC receives data signal 301, if CK>=0.2ppm is then logical to sedimentation basin two to filtering ponds one Magnetic valve transmission on road performs signal 311, if CK<0.2ppm, then to sedimentation basin two to anaerobic pond passage on magnetic valve pass Pass and perform signal 312;Corresponding magnetic valve receives execution signal and opens its valve;
Step 5:Industrial organic sewage stream passes through the aperture plate in organic filter tank one, particle of the filtering more than 5~8cm, liquid flow To abstraction pool, it is respectively using extractant in abstraction pool:Petroleum ether, ethyl acetate:Petroleum ether=1:5, ethyl acetate:Petroleum ether =1:1, ethyl acetate:Petroleum ether=5:1, ethyl acetate is extracted, and the piece-rate system in abstraction pool is by organic layer and water layer Separate, after the organic solvent recovery of organic layer, gained solid delivers to fertilizer producing system;Water layer flow to membrane filtration pond;
Step 6:Industrial inorganic sewage stream passes through the aperture plate in inorganic filter tank one, particle of the filtering more than 5~8cm, liquid flow To soda acid pond, in soda acid pond with Ca (OH)2Liquid is made as saturated solution, flow to oxidation pond, ferrite is passed through in oxidation pond Method, in n (Fe2+)/n(M2+After removing heavy metal ion under conditions of)=15, liquid flow to inorganic precipitation pond, adds concentration and is 25ppm flocculation agent, it be 2~3d that time of repose is set at time measurement module in this place, and sewage flow to nothing after 2~3d of standing The aperture plate of machine filtering ponds two, particle of the filtering more than 0.05~0.08cm;
Step 7:Granule content C in liquid after the filtering of 3rd detection module detection inorganic filter pond twoKIf CK≥ During 3ppm, signal 313 is performed to inorganic filter pond two to the magnetic valve transmission of oxidation pond passage;If CK<During 3ppm, to inorganic mistake The magnetic valve transmission of filter tank two to membrane filtration pond passage performs signal 314;Corresponding magnetic valve receives execution signal and opens its valve Door;
Step 8:4th detection module includes the pressure detection module located at membrane filtration pond, for the pressure in detection cell P, and be converted into data signal 401 and be transferred to PLC;The PLC receives data signal 401, and signal is performed to voltage regulating module transmission 401 or 402;The voltage regulating module, which receives, performs signal 401, and entrance pressure is adjusted into 0.32MPa, meanwhile, described first Detection module detects the temperature value of sewage, and is separately converted to data signal 101 and is transferred to PLC;The PLC receives data signal 101, when the temperature value in membrane filtration pond is less than 51 DEG C, signal 111 is performed to heating module transmission;When the temperature value in membrane filtration pond is more than At 55 DEG C, signal 112 is performed to heating module transmission;The heating module, receive and perform signal 111, by sedimentation basin one Water is heated to 25 DEG C;Receive and perform signal 112, stop heating, pass liquid through 50nm ceramic membranes, receive and perform Signal 402, exit pressure is adjusted to 0.10MPa, liquid is flow to anaerobic pond;
Step 9:It is 3~5d that sewage sets time of repose in Aerobic Pond, at time measurement module in this place, is being nitrified In the presence of bacterium and polyP bacteria, 3~5d is stood, flow to anaerobic pond, it is 3 that time of repose is set at time measurement module in this place ~4d, in the presence of denitrifying bacterium, 3~4d is stood, the 3rd detection module detection is passed through in the sewage of Aerobic Pond processing Nitrogen content CNWith phosphorus content CP, and be converted into data signal 304 and 305 and be transferred to PLC;The PLC receives the He of data signal 304 305, if CN>=8ppm, CP>=0.3ppm, then the magnetic valve to Aerobic Pond to anaerobic pond passage, transmits and performs signal 314;If CN< 8ppm, CP<During 0.3ppm, then signal 315 is performed to Aerobic Pond to the magnetic valve transmission of wetland passage;Corresponding magnetic valve receives Perform signal and open its valve;Sewage handles 10~15d, flow to detection cell in the presence of wetland;
Step 10:The granule content C of sewage in the 3rd detection module detection detection cellK, content of beary metal CZ, it is carbon containing Measure CC, nitrogen content CNWith phosphorus content CP, and be converted into data signal 301,302,303,304 and 305 and be transferred to PLC;The PLC Data signal 301,302 ... 305 are received, if CK>0.2ppm, signal 316 is performed to detection cell to the passage transmission of sedimentation basin two; If CZ>3ppm, signal 317 is performed to detection cell to the magnetic valve transmission of soda acid pond passage;If 3ppm>CZ>0.05ppm, to detection The magnetic valve transmission of pond to membrane filtration pond passage performs signal 318;If CC>During 0.02ppm, the electricity to detection cell to abstraction pool passage Magnet valve transmission performs signal 319;If 0.02ppm>CC>During 0.003ppm, the magnetic valve transmission to detection cell to membrane filtration pond passage Perform signal 320;If CN>8ppm or CP>0.3ppm, signal 320 is performed to detection cell to the magnetic valve transmission of anaerobic pond passage; If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, signal 321 is performed to detection cell to the magnetic valve transmission of wetland passage; If CK<0.2ppm, CZ<0.05ppm, CC>During 0.02ppm, CN<0.1ppm, CP<During 0.1ppm, to detection cell to ultraviolet sterilization pond Magnetic valve transmission perform signal 322;Corresponding magnetic valve receives execution signal and opens its valve;
Step 11:Ultraviolet sterilization pond, discharged every time after 40~60s of ultraviolet sterilization light irradiation.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (5)

1. a kind of automatic control system of municipal sewage treatment, it is characterised in that the urban sewage treatment system will live dirty Water, trade effluent separate collection, trade effluent again separately receive food industry sewage, industrial inorganic sewage and industrial organic sewage Collection;The sanitary sewage and trade effluent of separate collection are respectively by sanitary sewage pretreatment route and trade effluent pretreatment route Pre-processed, food industry sewage is pre-processed by sanitary sewage pretreatment route, and industrial inorganic sewage and industry have Machine sewage is pre-processed by industrial inorganic sewage disinfection treatment route and industrial organic sewage pretreatment route respectively;The life Sewage disinfection treatment route and trade effluent pretreatment route living is intersected in total processing route;Total processing route includes order and connected Anaerobic pond, Aerobic Pond, wetland, detection cell and the ultraviolet sterilization pond connect, the sanitary sewage pretreatment route include being linked in sequence Filtering ponds one, sedimentation basin one, filtering ponds two and sedimentation basin two, the food industry sewage flows through sanitary sewage pretreatment road Line, carry out the pretreatment same with sanitary sewage, including the filtering ponds one being linked in sequence, sedimentation basin one, filtering ponds two and precipitation Pond two, the industrial inorganic sewage disinfection treatment route include the inorganic filter pond one that is linked in sequence, soda acid pond, and oxidation pond is inorganic Sedimentation basin, inorganic filter pond two and membrane filtration pond, the industrial organic sewage pretreatment route include the organic filter being linked in sequence Pond and abstraction pool, industrial organic sewage pretreatment route are intersected in membrane filtration pond with industrial inorganic sewage disinfection treatment route;
Its feature also include first detection module, the second detection module, the 3rd detection module, the 4th detection module, heating module, Voltage regulating module, filter material add module, magnetic valve and PLC, the magnetic valve is at each feeder connection, the first detection mould Block includes the temperature monitor located at sedimentation basin one, inorganic precipitation pond and membrane filtration pond, for detecting the temperature value of sewage, and converts PLC is transferred to for data signal 101;Second detection module includes the pH detectors located at sedimentation basin two, for detecting dirt The pH value of water, and be converted into data signal 201 and be transferred to PLC;3rd detection module is included located at sedimentation basin two and inorganic The particle detector of filtering ponds two, the nitrogen content detector and phosphorus content detector of Aerobic Pond, and the particle detector of detection cell, Heavy metal detector, phosphorus content detector, nitrogen content detector and phosphorus content detector, for detecting the granule content in sewage CK, content of beary metal CZ, phosphorus content CC, nitrogen content CNWith phosphorus content CP, and it is converted into the and of data signal 301,302,303,304 305 are transferred to PLC;4th detection module includes the pressure detection module located at membrane filtration pond, for the pressure in detection cell, And it is converted into data signal 401 and is transferred to PLC;
The PLC respectively with first detection module, the second detection module, the 3rd detection module, the 4th detection module, heated mould Block, voltage regulating module, filter material add module are connected with magnetic valve;For receiving data signal 101, when sedimentation basin one or inorganic precipitation The temperature value in pond be less than 25 DEG C, or membrane filtration pond temperature value be less than 51 DEG C when, to heating module transmission perform signal 111;When heavy The temperature value in shallow lake pond one or inorganic precipitation pond be more than 28 DEG C, or membrane filtration pond temperature value be more than 55 DEG C when, to heating module transmission Perform signal 112;Data signal 201 is received, when its pH value is less than 8 or more than 9, signal is performed to the transmission of filter material add module 211 or 212;Data signal 301,302,303,304 and 305 is received, after judgement and calculating, is held to corresponding magnetic valve transmission Row signal 311,312 ... 322;Data signal 401 is received, signal 401 or 402 is performed to voltage regulating module transmission;
The heating module, receive and perform signal 111, the water in sedimentation basin one or inorganic precipitation pond is heated to 25 DEG C, or will Water in membrane filtration pond is heated to 51 DEG C;Receive and perform signal 112, stop heating;The filter material add module, receive and perform signal 211, then add the alkaline filtering material of predetermined close;Receive and perform signal 212, then add the acid filter material of predetermined close;The phase Answer magnetic valve to receive corresponding execution signal, then open its valve;The voltage regulating module include located at membrane filtration pond entrance and The pressure regulating pump in exit, signal 401 is performed for receiving, entrance pressure is adjusted to 0.32MPa, it is more to pass liquid through 50nm Passage inorganic ceramic membrane, receive and perform signal 402, exit pressure is adjusted to 0.10MPa.
2. a kind of automatic control system of municipal sewage treatment as claimed in claim 1, it is characterised in that PLC is to corresponding It is as follows that magnetic valve transmission performs signal 311,312 ... 322 detailed processes:
In sedimentation basin two:PLC receives data signal 301, if CK>=0.2ppm, then to sedimentation basin two to the passage of filtering ponds one Magnetic valve transmission performs signal 311, if CK<0.2ppm, then to sedimentation basin two to anaerobic pond passage on magnetic valve transmission perform Signal 312;
In inorganic filter pond two:If CKDuring >=3ppm, signal is performed to inorganic filter pond two to the magnetic valve transmission of oxidation pond passage 313;If CK<During 3ppm, the magnetic valve transmission to inorganic filter pond two to membrane filtration pond passage performs signal 314;
In Aerobic Pond:If CN>=8ppm, CP>=0.3ppm, the then magnetic valve to Aerobic Pond to anaerobic pond passage
Transmit and perform signal 314;If CN<8ppm, CP<During 0.3ppm, then performed to Aerobic Pond to the magnetic valve transmission of wetland passage Signal 315;
In detection cell:If CK>0.2ppm, signal 316 is performed to detection cell to the passage transmission of sedimentation basin two;If CZ>3ppm, Xiang Jian The magnetic valve transmission for surveying pond to soda acid pond passage performs signal 317;If 3ppm>CZ>0.05ppm, lead to detection cell to membrane filtration pond The magnetic valve transmission in road performs signal 318;If CC>During 0.02ppm, performed to detection cell to the magnetic valve transmission of abstraction pool passage Signal 319;If 0.02ppm>CC>During 0.003ppm, signal 320 is performed to detection cell to the magnetic valve transmission of membrane filtration pond passage;
If CN>8ppm or CP>0.3ppm, signal 320 is performed to detection cell to the magnetic valve transmission of anaerobic pond passage;If 8ppm>CN >0.1ppm or 0.3ppm>CP>0.1ppm, signal 321 is performed to detection cell to the magnetic valve transmission of wetland passage;If CK< 0.2ppm, CZ<0.05ppm, CC>During 0.02ppm, CN<0.1ppm, CP<During 0.1ppm, the electricity to detection cell to ultraviolet sterilization pond Magnet valve transmission performs signal 322.
3. a kind of automatic control system of municipal sewage treatment as claimed in claim 2, it is characterised in that also include:Time Metering module, it includes the sedimentation basin one and sedimentation basin two being located in sanitary sewage route, anaerobic pond, Aerobic Pond and wetland when Between gauge, for setting sewage time of repose;When reaching predetermined time of repose, prompting sound is sent, reminds staff's progress Operate in next step.
4. a kind of automatic control system of municipal sewage treatment as claimed in claim 3, it is characterised in that also include:It is ultraviolet Sterilization module, it includes the ultraviolet sterilization lamp located at ultraviolet sterilization pond, and its ultraviolet wavelength launched is 200~275nm, hair It is 13000~15000 μ W.s/cm to penetrate dosage2, 40~60s is irradiated every time.
5. a kind of autocontrol method of the automatic control system of municipal sewage treatment as described in one of Claims 1-4, its It is characterised by, it comprises the following steps:
Step 1:By sanitary sewage, food industry sewage, industrial inorganic sewage and industrial organic sewage separate collection;
Step 2:Sanitary sewage and food industry sewage flow through the aperture plate of filtering ponds one, particle of the filtering more than 5~8cm, liquid Sedimentation basin one, the temperature value of the first detection module detection sewage are flow to, and is separately converted to data signal 101 and is transferred to PLC;The PLC receives data signal 101, and when the temperature value of sedimentation basin one is less than 25 DEG C, letter is performed to heating module transmission Numbers 111;When the temperature value of sedimentation basin one is more than 28 DEG C, signal 112 is performed to heating module transmission;The heating module, connects Row signal 111 is accepted, the water in sedimentation basin one is heated to 25 DEG C;Receive and perform signal 112, stop heating;It is subsequently added into dense The flocculation agent for 25ppm is spent, it is 2~3d that time of repose is set at time measurement module in this place, and sewage flow to filtering ponds two Aperture plate, particle of the filtering more than 0.3~0.8cm, liquid flow to sedimentation basin two;
Step 3:The pH value of sewage in the second detection module detection sedimentation basin two, and be converted into data signal 201 and be transferred to PLC;The PLC receives data signal 201, and when its pH value is less than 8 or more than 9, signal is performed to the transmission of filter material add module 211 or 212;The filter material add module, signal 211 is performed if receiving, adds the alkaline filtering material of predetermined close;If reception is held Row signal 212, then add the acid filter material of predetermined close;It is 2~3d that time of repose is set at time measurement module in this place, Solid and liquid are separated, solid delivers to fertilizer producing system;
Step 4:Granule content C in the liquid that the 3rd detection module detection sedimentation basin two separatesK, and it is converted into data signal 301 are transferred to PLC, and the PLC receives data signal 301, if CK>=0.2ppm, then to sedimentation basin two to the passage of filtering ponds one Magnetic valve transmission perform signal 311, if CK<0.2ppm, then to sedimentation basin two to anaerobic pond passage on magnetic valve transmission hold Row signal 312;Corresponding magnetic valve receives execution signal and opens its valve;
Step 5:Industrial organic sewage stream passes through the aperture plate in organic filter tank one, particle of the filtering more than 5~8cm, and liquid flow to extraction Pond is taken, abstraction pool is interior to be respectively using extractant:Petroleum ether, ethyl acetate:Petroleum ether=1:5, ethyl acetate:Petroleum ether=1: 1, ethyl acetate:Petroleum ether=5:1, ethyl acetate is extracted, and the piece-rate system in abstraction pool separates organic layer with water layer Open, after the organic solvent recovery of organic layer, gained solid delivers to fertilizer producing system;Water layer flow to membrane filtration pond;
Step 6:Industrial inorganic sewage stream passes through the aperture plate in inorganic filter tank one, particle of the filtering more than 5~8cm, and liquid flow to acid Alkali pond, in soda acid pond with Ca (OH)2Liquid is made as saturated solution, flow to oxidation pond, ferrite process is passed through in oxidation pond, n(Fe2+)/n(M2+After removing heavy metal ion under conditions of)=15, liquid flow to inorganic precipitation pond, and addition concentration is 25ppm Flocculation agent, it be 2~3d that time of repose is set at time measurement module in this place, and sewage flow to inorganic mistake after 2~3d of standing The aperture plate in filter tank two, particle of the filtering more than 0.05~0.08cm;
Step 7:Granule content C in liquid after the filtering of 3rd detection module detection inorganic filter pond twoKIf CK≥3ppm When, perform signal 313 to inorganic filter pond two to the magnetic valve transmission of oxidation pond passage;If CK<During 3ppm, to inorganic filter pond Two to membrane filtration pond passage magnetic valve transmission perform signal 314;Corresponding magnetic valve receives execution signal and opens its valve;
Step 8:4th detection module includes the pressure detection module located at membrane filtration pond, for the pressure P in detection cell, and It is converted into data signal 401 and is transferred to PLC;The PLC receives data signal 401, to voltage regulating module transmission perform signal 401 or 402;The voltage regulating module, which receives, performs signal 401, and entrance pressure is adjusted into 0.32MPa, meanwhile, the first detection mould Block detects the temperature value of sewage, and is separately converted to data signal 101 and is transferred to PLC;The PLC receives data signal 101, when When the temperature value in membrane filtration pond is less than 51 DEG C, signal 111 is performed to heating module transmission;When the temperature value in membrane filtration pond is more than 55 DEG C When, perform signal 112 to heating module transmission;The heating module, receive and perform signal 111, the water in sedimentation basin one is added Heat is to 25 DEG C;Receive and perform signal 112, stop heating, pass liquid through 50nm ceramic membranes, receive and perform signal 402, exit pressure is adjusted to 0.10MPa, liquid is flow to anaerobic pond;
Step 9:Sewage in Aerobic Pond, at time measurement module in this place set time of repose be 3~5d, nitrifier with In the presence of polyP bacteria, stand 3~5d, flow to anaerobic pond, at time measurement module in this place set time of repose be 3~ 4d, in the presence of denitrifying bacterium, 3~4d is stood, the 3rd detection module detection contains in the sewage by Aerobic Pond processing Nitrogen quantity CNWith phosphorus content CP, and be converted into data signal 304 and 305 and be transferred to PLC;The PLC receives the He of data signal 304 305, if CN>=8ppm, CP>=0.3ppm, then the magnetic valve to Aerobic Pond to anaerobic pond passage, transmits and performs signal 314;If CN< 8ppm, CP<During 0.3ppm, then signal 315 is performed to Aerobic Pond to the magnetic valve transmission of wetland passage;Corresponding magnetic valve receives Perform signal and open its valve;Sewage handles 10~15d, flow to detection cell in the presence of wetland;
Step 10:The granule content C of sewage in the 3rd detection module detection detection cellK, content of beary metal CZ, phosphorus content CC、 Nitrogen content CNWith phosphorus content CP, and be converted into data signal 301,302,303,304 and 305 and be transferred to PLC;The PLC receives number Word signal 301,302 ... 305, if CK>0.2ppm, signal 316 is performed to detection cell to the passage transmission of sedimentation basin two;If CZ> 3ppm, signal 317 is performed to detection cell to the magnetic valve transmission of soda acid pond passage;If 3ppm>CZ>0.05ppm, to detection cell extremely The magnetic valve transmission of membrane filtration pond passage performs signal 318;If CC>During 0.02ppm, the magnetic valve to detection cell to abstraction pool passage Transmit and perform signal 319;If 0.02ppm>CC>During 0.003ppm, performed to detection cell to the magnetic valve transmission of membrane filtration pond passage Signal 320;If CN>8ppm or CP>0.3ppm, signal 320 is performed to detection cell to the magnetic valve transmission of anaerobic pond passage;If 8ppm>CN>0.1ppm or 0.3ppm>CP>0.1ppm, signal 321 is performed to detection cell to the magnetic valve transmission of wetland passage;If CK<0.2ppm, CZ<0.05ppm, CC>During 0.02ppm, CN<0.1ppm, CP<During 0.1ppm, to detection cell to ultraviolet sterilization pond Magnetic valve transmission performs signal 322;Corresponding magnetic valve receives execution signal and opens its valve;
Step 11:Ultraviolet sterilization pond, discharged every time after 40~60s of ultraviolet sterilization light irradiation.
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CN1285324A (en) * 2000-09-22 2001-02-28 北京中环康裕环保工程技术有限公司 Automatic controller for sewage treatment process
CN203976575U (en) * 2014-04-28 2014-12-03 郑州科达自动化工程有限公司 Water Treatment Automatic Control System

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CN1285324A (en) * 2000-09-22 2001-02-28 北京中环康裕环保工程技术有限公司 Automatic controller for sewage treatment process
CN203976575U (en) * 2014-04-28 2014-12-03 郑州科达自动化工程有限公司 Water Treatment Automatic Control System

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Denomination of invention: An automatic control system and method for urban sewage treatment

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