CN108017235A - A kind of accurate medicine system of sewage disposal and adding method thereof - Google Patents

A kind of accurate medicine system of sewage disposal and adding method thereof Download PDF

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Publication number
CN108017235A
CN108017235A CN201711434638.6A CN201711434638A CN108017235A CN 108017235 A CN108017235 A CN 108017235A CN 201711434638 A CN201711434638 A CN 201711434638A CN 108017235 A CN108017235 A CN 108017235A
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China
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dephosphorization
agent
carbon source
adds
tank
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CN108017235B (en
Inventor
王小玲
张南
和笑天
刘迎旭
万晓瑞
蒋晚霞
罗鹏
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Central Plains Environmental Protection Ltd By Share Ltd
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Central Plains Environmental Protection Ltd By Share Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/16—Total nitrogen (tkN-N)
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/29—Chlorine compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/40—Liquid flow rate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

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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)
  • Removal Of Specific Substances (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a kind of accurate medicine system of sewage disposal and adding method thereof, the system includes processing pond group, dephosphorization agent adds component, carbon source adds component, disinfectant adds component and control assembly, this method includes being added adjusting aluminium salt dephosphorization agent according to the monitor value of water outlet total phosphorus, dephosphorization with ferric salt agent is added and added with carbon source, added to adjust carbon source according to the monitor value of water outlet total nitrogen, added according to water outlet residual chlorine monitoring value to adjust disinfectant.The degree of automation of the present invention is high, and chemical dephosphorization agent can be added according to the online TP of water outlet, increases stable water outlet, is farthest solving the problems, such as dosing and effluent quality hysteresis quality up to standard so that system is more stablized, safety；The usage amount of medicament can have been saved to greatest extent according to adding than adjusting dosing pump FREQUENCY CONTROL dosage so that dosing dephosphorization, denitrogenation, disinfection are more scientific, also reduce cost of sewage disposal at the same time.

Description

A kind of accurate medicine system of sewage disposal and adding method thereof
Technical field
The present invention relates to technical field of sewage, and in particular to a kind of accurate medicine system of sewage disposal and dosing side Method.
Background technology
Nitrogen and phosphorous nutrient is the main compound for causing body eutrophication.Live as the mankind develop environmental resource Dynamic increasingly increase, makes a large amount of nitrogenous, phosphorus nutrition material sanitary sewages, industrial wastewater be discharged into rivers and lakes, adds water The load of body nutriment, its direct result are body eutrophication.Phosphorus in sewage can pass through chemistry and biological two kinds of sides Method removes.Biological phosphate-eliminating is a kind of phosphorus removing method of relatively economical, but since Biological Phosphorus Removal Processes at this stage can not also ensure Water total phosphorus stably reaches the requirement of 0.5mg/L standards, so often needing to use or aid in chemical dephosphorization measure.Ensureing water outlet On the premise of water quality, to realize that dosage is automatically adjusted with influent quality and water, dosing cost, intelligent dosing system are saved The direction constantly explored as water process researcher.The medicament that chemical dephosphorization adds mainly has molysite, aluminium salt and lime three classes, Domestic existing dephosphorization medicine system at present, is all to add single molysite or aluminium salt, can not realize that two kinds of medicaments use at the same time, And dosage can not be realized with water outlet total phosphorus and linked.Generally require to be adjusted according to analysis data once a day and operating experience Whole dosage, whether dosage is suitable, and whether effluent quality meets, is adjusted completely by the subjectivity of production run personnel, water outlet is steady It is qualitative not strong.
In addition, not only there is a large amount of bacteriums in sanitary sewage, and often containing virus, amoeba sporangiocyst etc..They pass through General wastewater treatment process can't be exterminated.Ordinary biofilter can only remove Escherichia coli in urban sewage treatment system 80-90%, activated sludge process can only also remove 90-95%.The propagation of disease in order to prevent, sewage（Waste water）Generally through machinery, life After changing two stage treatment, it is still necessary to which carry out disinfection processing.Currently used disinfectant has chlorine, chlorine dioxide, sodium hypochlorite, smelly Oxygen, disinfection by ultraviolet light etc., carry out disinfection sewage using ultraviolet, and power consumption is larger during operation, and fluorescent tube is easily damaged, water outlet SS Have a great influence to Disinfection Effect, overall disinfection effect is poor.Using disinfection by chlorine dioxide, operational management is more demanding, it is necessary to existing Field prepares chlorine dioxide, dangerous larger.Several sterilization process are contrasted, wherein hypochlorite disinfectant is safer effectively, economical Cost is relatively low.
Artificial dosing and accurate dosing two ways common are using sodium hypochlorite dosing at present.It is most of to use time chlorine The sewage treatment plant of sour sodium disinfection is to determine that sodium hypochlorite adds ratio by lab scale（Sodium hypochlorite dosage and wastewater influent amount Ratio）, then, operations staff calculated corresponding sodium hypochlorite dosage according to the average inflow of several hours, adjusted time chlorine The flow of sour sodium dosing pump.Due to manual adjustment, it is difficult to accurately control the dosage of sodium hypochlorite, often medicament is caused to throw Dosage not enough influences effluent quality, or dosage crosses multi-agent wasting phenomenon, and can be made if sodium hypochlorite dosage is excessive It is higher into water outlet chlorine residue, discharge water body environment is impacted.The higher sewage treatment plant of a part of the degree of automation time chlorine Sour sodium is added using accurate dosing pattern, i.e., gathers instant water coming-in amount by computer central control system, according to adding than certainly for setting It is dynamic to adjust sodium hypochlorite dosing pump discharge, since sewage treatment plant inflow change of water quality is larger, added according to fixed than determining Sodium hypochlorite dosage lacks science, be easy to cause the high influence discharge water body environment of water outlet contents of residual chlorine or Disinfection Effect not The problems such as good water outlet Escherichia coli index exceeding standard.Both the above dosing method is required to add with analysis data feedback sodium hypochlorite Amount whether meet Disinfection Effect, and every time chemically examine needs 48 it is small when when, feedback there is hysteresis quality, influence effluent quality.
Therefore, it is that solution is above-mentioned to design a kind of system and method that can be realized sewage disposal dephosphorization, sterilize accurate dosing The key of problem.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind can add molysite and aluminium salt two kinds of dephosphorization agents, dosings at the same time Accurately, and dephosphorization, denitrogenation and the accurate medicine system of the more preferable sewage disposal of Disinfection Effect and adding method thereof.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of accurate medicine system of sewage disposal is designed, including processing pond group, dephosphorization agent add component, carbon source adds component, disappear Toxic agent adds component and control assembly,
The processing pond group includes primary sedimentation tank, biological tank, secondary settling tank, the High-rate sedimentation set gradually according to sewage disposal order Pond, V-type filter tank and disinfecting tank, the biological tank include pre- anoxic pond, anaerobic pond, the anoxic pond and aerobic set gradually Pond；
Anaerobic pond and anoxic pond water inlet in the biological tank are respectively equipped with carbon source toss area, in the biological tank water outlet Dephosphorization agent toss area is respectively equipped with well, secondary clarifier effluent well and efficient sedimentation tank influent weir；In the disinfecting tank Water inlet is equipped with disinfectant toss area；Total water outlet at the secondary clarifier effluent Jing Chu and disinfecting tank rear portion is punished She You not total phosphorus on-line computing model；Total nitrogen on-line computing model is respectively equipped with the water outlet of the disinfecting tank and chlorine residue exists Line monitor；
The dephosphorization agent, which adds component, includes aluminium salt dephosphorization agent medicine storage pool and dephosphorization with ferric salt agent medicine storage pool, the aluminium salt dephosphorization agent storage Medicine pond adds pipeline by aluminium salt and is connected to removing at biological tank wet well, secondary clarifier effluent well and efficient sedimentation tank influent weir Phosphorus agent toss area；The dephosphorization with ferric salt agent medicine storage pool adds pipeline by molysite and is connected to secondary clarifier effluent well and High-rate sedimentation The dephosphorization agent toss area of Chi Jinshuiyanchu；
The disinfectant, which adds component, includes disinfectant medicine storing pot, and the disinfectant medicine storing pot adds pipeline by disinfectant and connects To the disinfectant toss area of the disinfecting tank water inlet, added in the disinfectant and solenoid valve, dosing are equipped with pipeline Pump and flowmeter；
The carbon source, which adds component, includes carbon source medicine storing pot, and the carbon source medicine storing pot adds pipeline by carbon source and is connected to the life The carbon source toss area of anaerobic pond and anoxic pond water inlet in thing pond；Added in the carbon source and solenoid valve is equipped with pipeline, added Teat pipette and flowmeter.
Preferably, the aluminium salt adds at least one drug that pipeline includes being connected with the aluminium salt dephosphorization agent medicine storage pool Pipe, at least two isocons being connected in parallel being connected with the drug discharging tube, each isocon connect one or more Zhi Liuguan to corresponding toss area, the tandem tube for connecting all Zhi Liuguan is equipped with the end of the isocon, two neighboring Solenoid valve is respectively equipped with tandem tube between Zhi Liuguan, flowmeter and solenoid valve are equipped with each Zhi Liuguan；
The molysite add pipeline include be connected with the dephosphorization with ferric salt agent medicine storage pool at least one drug discharging tube, with it is described go out At least two isocons being connected in parallel that pencil is connected, each isocon connect one or more Zhi Liuguan to right Toss area is answered, the tandem tube for connecting all Zhi Liuguan is equipped with the end of the isocon, between two neighboring Zhi Liuguan Solenoid valve is respectively equipped with tandem tube, flowmeter and solenoid valve are equipped with each Zhi Liuguan；
The control assembly includes master controller, the total phosphorus on-line computing model, total nitrogen on-line computing model and chlorine residue on-line monitoring Instrument connection corresponding with the master controller respectively, the aluminium salt adds pipeline, molysite adds pipeline, disinfectant adds pipeline and carbon Source adds solenoid valve, dosing pump and the flowmeter connection corresponding with the master controller on pipeline；The master controller passes through The flow of each dosing pump of Frequency Converter Control of corresponding number.
Preferably, the dephosphorization agent adds the flushing line that component further includes connection corresponding with external water source, the flushing Pipeline is respectively communicated to the drug discharging tube that the aluminium salt adds pipeline and molysite adds pipeline, and electromagnetism is equipped with the flushing line Valve；The carbon source adds the flushing line that component further includes connection corresponding with external water source, and the flushing line is connected to described Carbon source adds the drug discharging tube of pipeline, and solenoid valve is equipped with the flushing line.
Preferably, the dosing pump is diaphragm pump；The flow is calculated as electromagnetic flowmeter.The master controller is Siemens The PLC controller of 6ES7 series.
Preferably, the carbon source is sodium acetate；The aluminium salt dephosphorization agent is aluminium polychloride；The dephosphorization with ferric salt agent be with Square dephosphorization with ferric salt agent；The disinfectant is sodium hypochlorite.
Preferably, in the processing pond group, primary sedimentation tank, biological tank, secondary settling tank, efficient sedimentation tank, V-type filter tank and contact disappear The quantity in malicious pond is one or more.
The invention further relates to a kind of accurate adding method thereof of sewage disposal, comprise the following steps：
（1）Pending sewage is introduced into the processing pond group in the accurate medicine system of above-mentioned sewage disposal, passes sequentially through sewage Primary sedimentation tank, biological tank, secondary settling tank, efficient sedimentation tank, V-type filter tank and disinfecting tank are discharged after being processed；It is arranged on secondary settling tank The total phosphorus on-line computing model of total water outlet at wet well and disinfecting tank rear portion, respectively goes out the secondary settling tank detected The value of water total phosphorus TP1 and total water outlet total phosphorus TP2 at disinfecting tank rear portion are transmitted to master controller；It is arranged on contact sterilizing The total nitrogen on-line computing model and chlorine residue on-line computing model of pond water outlet are respectively by the value of the water outlet total nitrogen TN detected and water outlet The value of chlorine residue CL is transmitted to master controller.
（2）Aluminium salt dephosphorization agent adds
As water outlet total phosphorus TP1 >=0.25mg/L of single secondary settling tank, master controller is opened corresponding aluminium salt and is added on pipeline Dosing pump, aluminium salt dephosphorization agent, the aluminium are launched to the secondary settling tank to the dephosphorization agent toss area at corresponding biological tank wet well Salt dephosphorization agent is added than being adjusted according to following section：
When TP1 is between 0.25-0.30mg/L, aluminium salt dephosphorization agent is added than for 10mg/L；
When TP1 is between 0.30-0.35mg/L, aluminium salt dephosphorization agent is added than for 20mg/L；
When TP1 is between 0.35-0.40mg/L, aluminium salt dephosphorization agent is added than for 30mg/L；
When TP1 is between 0.40-0.45mg/L, aluminium salt dephosphorization agent is added than for 40mg/L；
And so on, when the value of TP1 often rises the interval range of 0.05mg/L, aluminium salt dephosphorization agent is added than just in existing throwing Add the increase increase 10mg/L than on the basis of；
When TP1 drops to below 0.25mg/L, and continue 6 it is small when, master controller closes the throwing that dosing pump stops aluminium salt dephosphorization agent Add, and pipeline is added to aluminium salt and is rinsed.
（3）Dephosphorization with ferric salt agent adds
Master controller calculates the water outlet total phosphorus average TP3 of each secondary settling tank, and as TP3 >=0.20mg/L, master controller is opened corresponding Molysite add dosing pump on pipeline, launch dephosphorization with ferric salt agent, the iron to the dephosphorization agent toss area of secondary clarifier effluent Jing Chu Salt dephosphorization agent is added than being adjusted according to following section：
When TP3 is between 0.20-0.30mg/L, dephosphorization with ferric salt agent is added than for 5mg/L；On this basis, when the value of TP3 Often rise the interval range of 0.1mg/L, dephosphorization with ferric salt agent is added than just increasing 5mg/L than on the basis of in existing add；TP3 Often decline the interval range of 0.1mg/L, dephosphorization with ferric salt agent is added than just reducing 5mg/L than on the basis of in existing add；
Meanwhile every 4 hours contrast the value of total water outlet total phosphorus TP2, as TP2 >=0.15mg/L, dephosphorization with ferric salt agent Add than just increasing 2.5mg/L than on the basis of in existing add；As TP2 ＜ 0.15mg/L, dephosphorization with ferric salt agent adds Than just reducing 2.5mg/L than on the basis of in existing add；
When TP3 is in 0.15-0.20mg/L, by adding than continuing to add dephosphorization with ferric salt agent for minimum 5mg/L；As TP3 ＜ 0.15mg/L, and it is continuous 6 it is small when after, master controller, which closes dosing pump and stops dephosphorization with ferric salt agent, to be added, and adds pipe to aluminium salt Road is rinsed.
（4）Carbon source adds
As the water outlet total phosphorus TP1 ＞ 2.5mg/L of single secondary settling tank, and continue 4 it is small when more than when, main controller controls carbon source adds Dosing pump on pipeline, the carbon source toss area of the anaerobic pond water inlet into corresponding biological tank launch carbon source；The throwing of carbon source Add than for：（TP1-0.5）The BOD equivalents of × 20/ carbon source, the dosage of carbon source are：Add the inflow of ratio × biological tank；When The water outlet total phosphorus content TP1 of single secondary settling tank is less than 0.5mg/L and for 6 hours, and stopping adds carbon source；Wherein, TP1 is single The water outlet total phosphorus monitor value of a secondary settling tank, the water outlet total phosphorus desired value of single secondary settling tank are less than 0.5mg/L, often cut down 1mg/L Water outlet total phosphorus needed for BOD be 20mg/L.
The carbon source adds component and can also be used for enhanced biological denitrification denitrogenation.As water outlet total nitrogen TN >=12mg/L, master control Device control carbon source processed adds the dosing pump on pipeline, and the carbon source toss area of the anoxic pond water inlet into corresponding biological tank is launched Carbon source；Carbon source add than for：（TN-12）The BOD equivalents of × 4/ carbon source, the dosage of carbon source are：Add ratio × biological tank Inflow；Wherein, the monitor value of TN water outlets total nitrogen, when desired value of water outlet total nitrogen, are less than 12mg/L, often cut down going out for 1mg/L BOD needed for water total nitrogen is 4mg/L.When water outlet total nitrogen TN contents are less than 12mg/L and for 6 hours, stopping adds carbon source.
（5）Disinfectant adds
The corresponding disinfectant of master controller unlatching adds the dosing pump on pipeline, is thrown to the toss area of disinfecting tank water inlet Disinfectant is put, the disinfectant is added than being adjusted according to following section：
As water outlet chlorine residue CL<During 0.05mg/L, disinfectant is added than for 25mg/L；When water outlet chlorine residue CL continuous four is small< 0.05mg/L, disinfectant are added than just increasing 1mg/L than on the basis of in existing add；
As 0.05mg/L≤CL≤0.1mg/L, disinfectant keeps existing and adds than constant；
As water outlet chlorine residue CL ＞ 0.1mg/L, and continue 4 it is small when after, disinfectant is added than just being added existing than basis Upper reduction 1mg/L.
（6）In sewage disposal process, according to corresponding condition, step is carried out（2）、（3）、（4）、（5）Feeding operations, Until treatment process is finished.
Preferably, the carbon source is sodium acetate, and the BOD equivalents of sodium acetate are 0.78（Kg BOD5/kg sodium acetates）；Institute It is aluminium polychloride to state aluminium salt dephosphorization agent, and its density is 1.2-1.3t/m3；The dephosphorization with ferric salt agent is Formula type dephosphorization with ferric salt Agent, is specially the efficient dephosphorization agent-T2 of the Heng auxiliary agents Co., Ltd production in Shijiazhuang day, its density is 1.48t/m3, solid content >=45%, metal oxide content >=12%, ferric oxide content >=11.5%, pH value（1% aqueous solution）For 2-3, water-insoluble Mass fraction ＜ 1%；It can also use other kinds of dephosphorization with ferric salt agent such as bodied ferric sulfate；The disinfectant is hypochlorous acid Sodium, and the effective chlorine in the sodium hypochlorite is more than 10%.
Preferably, in step（3）In while add dephosphorization with ferric salt agent, aluminium salt dephosphorization agent maintenance adds.
Preferably, step（2）The toss area of middle aluminium salt dephosphorization agent is the dephosphorization agent toss area at biological tank wet well, two sink Dephosphorization agent toss area at the dephosphorization agent toss area of Chi Chushuijingchu or efficient sedimentation tank influent weir corresponding with the secondary settling tank； Step（3）The toss area of middle dephosphorization with ferric salt agent is the dephosphorization agent toss area or efficient sedimentation tank influent weir of secondary clarifier effluent Jing Chu The dephosphorization agent toss area at place.
The above adds the quality of the medicament than referring to adding needed for every processing 1L sewage, unit mg/L.
The beneficial effects of the present invention are：
1. the accurate medicine system of sewage disposal of the present invention, by total phosphorus on-line computing model monitor in real time secondary clarifier effluent Jing Chu and The total phosphorus value of total water outlet at disinfecting tank rear portion, adds than launching dephosphorization according to the total phosphorus value measured according to corresponding Agent, the dosage of dephosphorization agent can be adjusted with inflow automatic and accurate；When dephosphorization agent can not effectively control water outlet total phosphorus, system is certainly In the dynamic anaerobic pond water inlet added in carbon source to biological tank, increase the carbon source of aeration tank anaerobic zone, phosphorus is released in reinforced anaerobic area Effect, and then the bioactivity and strain quantity of polyP bacteria are improved, effectively ensure the stably reaching standard of effluent quality；Can also basis The monitor value of water outlet total nitrogen, the anoxic pond water inlet into biological tank add carbon source, for strengthening the biological anti-nitre in anoxic pond Change denitrification effect, improve nitric efficiency.
2. the present invention is according to the chemical property of two kinds of different chemical dephosphorization medicaments, there is provided two sets of parallel Dephosphorization reagent throwings Adding system, can use individually or at the same time, come reasonable regulating agent species and dosage, realize efficiently using for medicament. The molysite and aluminium salt of other models can be selected according to needs of production, improves the flexibility of adjustment.Two sets of independent dosings Pipeline, is both provided with two kinds and two or more differences adds path, realizes the variation of function to the full extent and adds The reliability of medicine pipeline system.When indivedual dosing pipelines break down, other active redundancy pipelines are can switch to, ensure medicament Add, realize water outlet total phosphorus stably reaching standard.
3. the present invention can select different according to the variation tendency of secondary clarifier effluent total phosphorus TP1 and total water outlet total phosphorus TP2 Chemical dephosphorization agent, and according to default add ratio carry out automatic feeding.Secondary clarifier effluent total phosphorus TP1 is provided with difference Interval range, different interval ranges added than being added according to different, while after the feedback time of setting, always When water outlet total phosphorus TP2 is not reduced to below desired value limitation, the half for adding ratio according to each adjustment automatically is adjusted Whole, realization accurately adds, and saves dosing.The parameter of interval range and water outlet total phosphorus theory limit value can manually be set.
4. the present invention is designed with carbon source and adds component, for carrying out carbon source supplement, enhanced biological phosphorus removal and life to biological tank Thing denitrogenation.Different types of carbon source can be selected, needs can be calculated according to calculation formula adds ratio, is carried out certainly according to water It is dynamic to add.Carbon source kind and model are more, and carbon source purity of the same race is different, its active ingredient is also different, therefore introduce the BOD of carbon source Equivalent, different carbon source add ratio according to use and experimental conditions according to the BOD equivalents of carbon source calculating carbon source.
5. the disinfectant in the present invention adds component, can be added according to inflow according to corresponding than automatically adjusting time chlorine Sour sodium dosing pump discharge, and added according to the verification of water outlet chlorine content than whether suitable, according to water outlet contents of residual chlorine location tune Section sodium hypochlorite adds ratio；Dosage can be adjusted in real time according to inflow, not only can accurately complete dosing requirement, but also more than use Chlorine feedback add than well-formedness, ensure that dosage is scientific and effective, realize the accurate dosing of intelligence.
6. the part of the dephosphorization dosing in the present invention, in addition to playing the role of accurate, efficient dephosphorization, also has and removes always Nitrogen and improve sludge settling, prevent the function of winter sludge bulking, Treatment of Sludge factory in the north easily occurred sludge bulking and showed winter As, sludge index and settling ratio rise, secondary settling tank sludge not free settling, processing water is restricted, therefore winter uses the system While biological tank wet well or secondary clarifier effluent well add aluminium polychloride dephosphorization according to a certain percentage, can effectively it press down Sludge bulking processed.
7. the degree of automation of the present invention is high, chemical dephosphorization agent can be added according to the online TP of water outlet, increases stable water outlet, Farthest solving the problems, such as dosing and effluent quality hysteresis quality up to standard so that system is more stablized, safety；At the same time can According to adding than adjusting dosing pump FREQUENCY CONTROL dosage, to have saved the usage amount of medicament to greatest extent so that dosing removes Phosphorus, disinfection are more scientific, also reduce cost of sewage disposal；The operation that system is stablized also saves manual labor's intensity, allows operation Personnel feel at ease.
Brief description of the drawings
Fig. 1 is the schematic diagram of the accurate medicine system of sewage disposal of the present invention；
Fig. 2 is the line distribution schematic diagram that dephosphorization agent adds component；
Fig. 3 is the schematic diagram that carbon source adds component；
Fig. 4 is the schematic diagram that disinfectant adds component.
Embodiment
Illustrate the embodiment of the present invention with reference to embodiment, but following embodiments are used only to describe in detail The present invention, does not limit the scope of the invention in any way.Involved equipment component is as without especially in the examples below Illustrate, be conventional equipment element；The involved raw material of industry is commercially available regular industrial raw material unless otherwise instructed.
Embodiment 1：A kind of accurate medicine system of sewage disposal, referring to Fig. 1, including processing pond group, dephosphorization agent add component, Carbon source adds component, disinfectant adds component and control assembly, and processing pond group includes what is set gradually according to sewage disposal order Primary sedimentation tank, biological tank, secondary settling tank, efficient sedimentation tank, V-type filter tank and disinfecting tank, biological tank include setting gradually pre- scarce Oxygen pond, anaerobic pond, anoxic pond and aerobic tank.In the processing pond group, primary sedimentation tank, biological tank, secondary settling tank, efficient sedimentation tank, V-type The quantity of filter tank and disinfecting tank may be configured as one or more according to specific requirements.
Anaerobic pond and anoxic pond water inlet in biological tank are respectively equipped with carbon source toss area, biological tank wet well, Dephosphorization agent toss area is respectively equipped with secondary clarifier effluent well and efficient sedimentation tank influent weir；In the water inlet of disinfecting tank Equipped with disinfectant toss area；Total water outlet at secondary clarifier effluent Jing Chu and disinfecting tank rear portion is respectively equipped with total phosphorus and exists Line monitor；Total nitrogen on-line computing model and chlorine residue on-line computing model are respectively equipped with the water outlet of disinfecting tank.
Dephosphorization agent, which adds component, includes aluminium salt dephosphorization agent medicine storage pool and dephosphorization with ferric salt agent medicine storage pool, referring to Fig. 2, aluminium salt dephosphorization Agent medicine storage pool adds pipeline by aluminium salt and is connected at biological tank wet well, secondary clarifier effluent well and efficient sedimentation tank influent weir Dephosphorization agent toss area；Dephosphorization with ferric salt agent medicine storage pool adds pipeline by molysite and is connected to secondary clarifier effluent well and High-rate sedimentation The dephosphorization agent toss area of Chi Jinshuiyanchu.
Wherein, carbon source is sodium acetate；Aluminium salt dephosphorization agent is aluminium polychloride；Dephosphorization with ferric salt agent is Formula type dephosphorization with ferric salt Agent, is specially the efficient dephosphorization agent-T2 of the Heng auxiliary agents Co., Ltd production in Shijiazhuang day, or other dephosphorization with ferric salt agent are as gathered Close ferric sulfate；Disinfectant is sodium hypochlorite, and the effective chlorine in sodium hypochlorite is more than 10%.
Aluminium salt adds at least one drug discharging tube that pipeline includes being connected with aluminium salt dephosphorization agent medicine storage pool, is connected with drug discharging tube The isocon that logical at least two are connected in parallel, each isocon connect one or more Zhi Liuguan and are added to corresponding Point, the tandem tube for connecting all Zhi Liuguan is equipped with the end of isocon, is divided on the tandem tube between two neighboring Zhi Liuguan Not She You solenoid valve, be equipped with flowmeter and solenoid valve on each Zhi Liuguan；Molysite, which adds pipeline, to be included and dephosphorization with ferric salt agent At least one drug discharging tube that medicine storage pool is connected, at least two isocons being connected in parallel being connected with drug discharging tube, Mei Gefen Flow tube connects one or more Zhi Liuguan to corresponding toss area, is equipped with the end of isocon and connects all Zhi Liuguan's Tandem tube, is respectively equipped with solenoid valve on the tandem tube between two neighboring Zhi Liuguan, flow is equipped with each Zhi Liuguan Meter and solenoid valve.Aluminium salt dephosphorization agent, dephosphorization with ferric salt agent are delivered to aluminium respectively by exterior medicament transporting equipment by unloading Teat pipette In salt dephosphorization agent medicine storage pool and dephosphorization with ferric salt agent medicine storage pool.
Wherein, aluminium salt is added in pipeline, is arranged on the toss area of secondary clarifier effluent Jing Chu, being capable of going out by secondary settling tank Water, makes aluminium polychloride be sufficiently mixed with the TP in water in secondary clarifier effluent pipeline, and it is follow-up efficiently heavy to be evenly distributed to In the pond of shallow lake, coagulation and precipitation are carried out, the calcium phosphate precipitation thing of slightly solubility is formed, so that TP be removed；Efficient sedimentation tank influent weir Aluminium polychloride, can be fed directly to efficient sedimentation tank, dosing pipeline alternately, improves dosing method by the toss area at place It is alternative；Meanwhile consider in terms of the chemical property and operating cost two of aluminium polychloride, it have also been devised towards biology The dosing pipeline of pond end, can individually add to biological tank.
The toss area of the dephosphorization with ferric salt agent of secondary clarifier effluent Jing Chu is arranged on, dephosphorization with ferric salt agent can be made to exist with the TP in water It is sufficiently mixed, is evenly distributed in follow-up efficient sedimentation tank in secondary clarifier effluent pipeline, carry out coagulation and precipitation, it is difficult to be formed The calcium phosphate precipitation thing of dissolubility, so that TP be removed；Meanwhile the toss area at efficient sedimentation tank influent weir is arranged on, can be by T2 Medicament is fed directly to efficient sedimentation tank, dosing pipeline alternately, improves the alternative of dosing method.
Dephosphorization agent adds the flushing line that component further includes connection corresponding with external water source, and flushing line is respectively communicated to aluminium Salt adds pipeline and molysite adds the drug discharging tube of pipeline, and solenoid valve is equipped with flushing line.Wash tub pipe in flushing line Road connects three-way valve, for being rinsed to dephosphorization agent dosing pipeline, while is furnished with special valve, turns off path, eliminates The possibility that two kinds of chemical dephosphorization agents contact in flushing water pipeline, avoiding reacting produces clogging deposits pipeline and sets It is standby.Carbon source adds the flushing line that component further includes connection corresponding with external water source, and flushing line is connected to carbon source and adds pipeline Drug discharging tube, solenoid valve is equipped with flushing line, referring to Fig. 2.
Disinfectant, which adds component, includes disinfectant medicine storing pot, and disinfectant medicine storing pot, which by disinfectant adds pipeline and is connected to, to be connect The disinfectant toss area of sterilization pool water inlet is touched, is added in disinfectant and solenoid valve, dosing pump and flowmeter is equipped with pipeline；Ginseng See Fig. 4.
Carbon source, which adds component, includes carbon source medicine storing pot, and carbon source medicine storing pot adds pipeline by carbon source and is connected to anaerobic pond and lacks The carbon source toss area at the place of oxygen pond water inlet；Added in carbon source and solenoid valve, dosing pump and flowmeter are equipped with pipeline, referring to Fig. 3. Carbon source adds component and is used to carry out carbon source supplement, enhanced biological phosphorus removal and biological denitrificaion to biological tank.
Control assembly includes master controller, total phosphorus on-line computing model, total nitrogen on-line computing model and chlorine residue on-line computing model point Connection not corresponding with master controller, aluminium salt adds pipeline, molysite adds pipeline, disinfectant adds pipeline and carbon source is added on pipeline Solenoid valve, dosing pump and flowmeter it is corresponding with master controller connection；The Frequency Converter Control that master controller passes through corresponding number The flow of each dosing pump.Wherein, dosing pump is diaphragm pump；Flow is calculated as electromagnetic flowmeter；Master controller is Siemens 6ES7 The PLC controller of series.
Embodiment 2：A kind of accurate adding method thereof of sewage disposal, it is characterised in that comprise the following steps：
（1）Pending sewage is introduced into the processing pond group in the accurate medicine system of 1 sewage disposal of embodiment, sewage is led to successively Cross after primary sedimentation tank, biological tank, secondary settling tank, efficient sedimentation tank, V-type filter tank and disinfecting tank are processed and discharge；It is heavy to be arranged on two The total phosphorus on-line computing model of Chi Chushuijingchu and total water outlet at disinfecting tank rear portion, the secondary settling tank that will be detected respectively The value of water outlet total phosphorus TP1 and total water outlet total phosphorus TP2 at disinfecting tank rear portion are transmitted to master controller；Contact is arranged on to disappear Malicious pond water outlet total nitrogen on-line computing model and chlorine residue on-line computing model are respectively by the value of the water outlet total nitrogen TN detected and water outlet The value of chlorine residue CL is transmitted to master controller.
（2）Aluminium salt dephosphorization agent adds
As water outlet total phosphorus TP1 >=0.25mg/L of single secondary settling tank, master controller is opened corresponding aluminium salt and is added on pipeline Dosing pump, launches aluminium salt dephosphorization agent, aluminium salt is removed to the secondary settling tank to the dephosphorization agent toss area at corresponding biological tank wet well Phosphorus agent is added than being adjusted according to following section：
When TP1 is between 0.25-0.30mg/L, aluminium salt dephosphorization agent is added than for 10mg/L；On this basis, when TP1's Value often rises the interval range of 0.05mg/L, and aluminium salt dephosphorization agent is added than just increasing increase than on the basis of in existing add 10mg/L；
When TP1 drops to below 0.25mg/L, and continue 6 it is small when, master controller closes the throwing that dosing pump stops aluminium salt dephosphorization agent Add, and pipeline is added to aluminium salt and is rinsed；
Aluminium salt dephosphorization agent is aluminium polychloride, and its density is 1.2-1.3t/m3。
（3）Dephosphorization with ferric salt agent adds
Master controller calculates the water outlet total phosphorus average TP3 of each secondary settling tank, and as TP3 >=0.20mg/L, master controller is opened corresponding Molysite add dosing pump on pipeline, launch dephosphorization with ferric salt agent to the dephosphorization agent toss area of secondary clarifier effluent Jing Chu, molysite removes Phosphorus agent is added than being adjusted according to following section：
When TP3 is between 0.20-0.30mg/L, dephosphorization with ferric salt agent is added than for 5mg/L；On this basis, when the value of TP3 Often rise the interval range of 0.1mg/L, dephosphorization with ferric salt agent is added than just increasing 5mg/L than on the basis of in existing add；TP3 Often decline the interval range of 0.1mg/L, dephosphorization with ferric salt agent is added than just reducing 5mg/L than on the basis of in existing add；
Meanwhile every 4 hours contrast the value of total water outlet total phosphorus TP2, as TP2 >=0.15mg/L, dephosphorization with ferric salt agent Add than just increasing 2.5mg/L than on the basis of in existing add；As TP2 ＜ 0.15mg/L, dephosphorization with ferric salt agent adds Than just reducing 2.5mg/L than on the basis of in existing add；
When TP3 is in 0.15-0.20mg/L, by adding than continuing to add dephosphorization with ferric salt agent for minimum 5mg/L；As TP3 ＜ 0.15mg/L, and it is continuous 6 it is small when after, master controller, which closes dosing pump and stops dephosphorization with ferric salt agent, to be added, and adds pipe to aluminium salt Road is rinsed；
Dephosphorization with ferric salt agent is Formula type dephosphorization with ferric salt agent, is specially the efficient dephosphorization of the Heng auxiliary agents Co., Ltd production in Shijiazhuang day Agent-T2, its density are 1.48t/m3, solid content >=45%, metal oxide content >=12%, ferric oxide content >=11.5%, PH value（1% aqueous solution）For 2-3, the mass fraction ＜ 1% of water-insoluble；Other kinds of dephosphorization with ferric salt agent be can also use as gathered Close ferric sulfate；
In step（3）In while add dephosphorization with ferric salt agent, aluminium salt dephosphorization agent maintenance adds.
（4）Carbon source adds
As the water outlet total phosphorus TP1 ＞ 2.5mg/L of single secondary settling tank, and continue 4 it is small when more than when, main controller controls carbon source adds Dosing pump on pipeline, the anaerobic pond water inlet carbon source toss area into corresponding biological tank launch carbon source；
Carbon source add than for：（TP1-0.5）The BOD equivalents of × 20/ carbon source, the dosage of carbon source are：Add ratio × biology The inflow in pond；Wherein, TP1 is the water outlet total phosphorus of single secondary settling tank, and the water outlet total phosphorus desired value of single secondary settling tank is less than 0.5mg/L, the BOD often cut down needed for 1mg/L water outlet total phosphorus is 20mg/L.
Example：The monitor value TP1 of the water outlet total phosphorus of single secondary settling tank is 2.5mg/L, and the carbon source added is sodium acetate, sodium acetate BOD equivalents be 0.78（Kg BOD5/kg sodium acetates）, the inflow of biological tank is 3125m3/ h, and the secondary settling tank corresponds to two Biological tank, then：
Sodium acetate add than for（2.5-0.5）×20/0.78=51.28mg/L=51.28g/m3,
Sodium acetate dosage is 51.28 × 3125 × 2=320500g/h ≈ 320kg/h.
When the water outlet total phosphorus content TP1 of single secondary settling tank is less than 0.5mg/L and for 6 hours, stopping adds carbon source.
The carbon source adds component and can also be used for enhanced biological denitrification denitrogenation.As water outlet total nitrogen TN >=12mg/L, master control Device control carbon source processed adds the dosing pump on pipeline, and the carbon source toss area of the anoxic pond water inlet into corresponding biological tank is launched Carbon source；Carbon source add than for：（TN-12）The BOD equivalents of × 4/ carbon source, the dosage of carbon source are：Add ratio × biological tank Inflow.
Wherein, the monitor value of TN water outlets total nitrogen, the total nitrogen desired value of total water outlet are less than 12mg/L, often cut down 1mg/ BOD needed for the water outlet total nitrogen of L is 4mg/L.
Example：The monitor value of water outlet total nitrogen TN is 13mg/L, and the carbon source added is sodium acetate, and the BOD equivalents of sodium acetate are 0.78（Kg BOD5/kg sodium acetates）, the inflow of single biological tank is 3125m3/ h, and the system has two biological tanks, then：
Sodium acetate add than for（13-12）×4/0.78=5.13mg/L=5.13g/m3,
Sodium acetate dosage is 5.13 × 3125 × 2=32062g/h ≈ 32kg/h.
When water outlet total nitrogen TN contents are less than 12mg/L and for 6 hours, stopping adds carbon source.
（5）Disinfectant adds
The corresponding disinfectant of master controller unlatching adds the dosing pump on pipeline, is thrown to the toss area of disinfecting tank water inlet Disinfectant is put, disinfectant is added than being adjusted according to following section：
As water outlet chlorine residue CL<During 0.05mg/L, disinfectant is added than for 25mg/L；When water outlet chlorine residue CL continuous four is small< 0.05mg/L, disinfectant are added than just increasing 1mg/L than on the basis of in existing add；
As 0.05mg/L≤CL≤0.1mg/L, disinfectant keeps existing and adds than constant；
As water outlet chlorine residue CL ＞ 0.1mg/L, and continue 4 it is small when after, disinfectant is added than just being added existing than basis Upper reduction 1mg/L；
Wherein, disinfectant is sodium hypochlorite, and the effective chlorine in sodium hypochlorite is more than 10%.
（6）In sewage disposal process, according to corresponding condition, step is carried out（2）、（3）、（4）、（5）Feeding operations, Until treatment process is finished.
In addition, step（2）The toss area of middle aluminium salt dephosphorization agent is in addition to the dephosphorization agent toss area at biological tank wet well, also It can be the dephosphorization at the dephosphorization agent toss area or efficient sedimentation tank influent weir corresponding with the secondary settling tank of secondary clarifier effluent Jing Chu Agent toss area；Step（3）The toss area of middle dephosphorization with ferric salt agent may be used also in addition to being the dephosphorization agent toss area of secondary clarifier effluent Jing Chu To be the dephosphorization agent toss area at efficient sedimentation tank influent weir.
The above adds the quality of the medicament than referring to adding needed for every processing 1L sewage, unit mg/L.
In adding method thereof of the present invention, the linkage of the online total phosphorus of water outlet same dephosphorization agent, carbon source is realized, first, when single two When sinking pool effluent total phosphorus TP1 is in 0.25-0.5mg/L scopes, it is limited raises aluminium salt dosage successively according to a certain percentage, throw Add to biological tank outlet water at tail end well.When the water outlet total phosphorus average TP3 of each secondary settling tank is more than 0.2mg/L, according to certain section Scope and according to 4 when small after second phase total water outlet online total phosphorus value of feedback, intelligent dephosphorizing system be limited according to a certain percentage according to Secondary up-regulation molysite dosage.On the other hand, the BOD/TP values in sewage be influence Biological Phosphorus Removal System dephosphorization effect it is important because One of element, often removing the TP of 0.04-0.08mg about needs the BOD of 1mg, to meet water outlet total phosphorus TP, should meet in sewage BOD/TP values are more than 20.When BOD/TP of intaking is unbalance or it is remaining sludge volume is too low when causing sludge age long, according to biology Except tp removal rate calculates, secondary clarifier effluent TP is excessive, during beyond the sphere of action or excessive cost of chemical dephosphorization agent, then according to The ratio of calculating adds the carbon sources such as sodium acetate.
Dephosphorization agent, which adds, can set multiple independent dosing pipelines in component, often cover dosing pipeline be both provided with two kinds and Two or more differences adds path, realizes variation and the reliability of dosing pipeline system of function to the full extent. When indivedual dosing pipelines break down, other active redundancy pipelines are can switch to, ensure adding of agent, realize that water outlet TP stablizes It is up to standard.
In adding method thereof of the present invention, linkage of the online total nitrogen of water outlet with carbon source is realized, as the total nitrogen TN of total water outlet During more than 12mg/L, the carbon sources such as sodium acetate are added according to the ratio of calculating, add the anoxic pond water inlet into biological tank.
Disinfectant adds, and according to inflow adding than automatically adjusting sodium hypochlorite dosing pump discharge according to setting, presses Water contents of residual chlorine of breaking forth location adjusts sodium hypochlorite and adds ratio, adjusts dosage in real time according to inflow, can be accurately Complete dosing requirement, but with chlorine feedback add than well-formedness, ensure that dosage is scientific and effective, realize the accurate dosing of intelligence.
On the basis of medicine system of the present invention and adding method thereof, intelligent dephosphorizing Data Analysis Model, root can also be established According to influent COD automatic detection analysis instrument and water inlet total phosphorus automatic detection analysis instrument, and the BOD/COD ratios of statistics of database and The reduction rate of BOD, COD, TP in coagulation, and primary sedimentation tank sludge volume is referred to, to calculate BOD, TP of primary sedimentation tank water outlet. Operations staff is manually entered primary sedimentation tank water inlet and water outlet COD, BOD, TP of laboratory assay daily, is united according to the data of nearly 10 times Meter, it can be deduced that the ratio of BOD/COD, according to the data of database, reduction rates of the BOD in coagulation is 12.84%, TP Reduction rate in coagulation is that 8.15%, BOD/COD is about 0.47, BOD/TP 28.92, pre- anoxic pond anaerobic pond water inlet Match as 3:7（Water inlet proportioning can be adjusted according to operation actual needs）.
Then theoretical water outlet total phosphorus TPeCalculation formula as shown in formula 1：
--- formula 1；
Wherein, TP0The water inlet TP obtained for the online TP of water inlet or chemical examination；COD0For online COD of intaking.
If since the residence time of the structures such as primary sedimentation tank, biological tank, secondary settling tank is longer, when water inlet BOD/TP is unbalance, two Sinking pool effluent TP will not go up at once, therefore can be judged in advance using Data Analysis Software, when the theory two calculated Sinking pool effluent total phosphorus TPe>During 0.5mg/L, signal an alert, reminds operations staff to pay attention to making an inspection tour and strengthens sampling, can be timely Dephosphorization MANUAL CONTROL mode is selected, improves the dosage of dephosphorization agent.
Further, since the change of the parameter such as inflow, aeration tank MLSS, the efficiency of biological tank dephosphorization system can also become Change, therefore a correction factor can be introduced, by the same inflows of secondary clarifier effluent TP calculated, aeration tank MLSS, residue Sludge discharge, excess sludge concentration, actual secondary clarifier effluent TP carry out big data statistics, draw correction factor, final accurate The secondary clarifier effluent TP calculated.
The each aeration tank MLSS of comprehensive analysis, aeration tank residue sludge volume, inflow, sludge is calculated according to formula 2 respectively Age and sludge loading：
--- formula 2；
Wherein, SRT is sludge age, and unit d, V are Aeration Tank Volume, unit m3；MLSS is aeration tank sludge concentration, single Position is mg/L；QWFor excess sludge discharge capacity, unit m3；RSS is excess sludge concentration, unit mg/L；
SRT is obtained according to formula 2, when SRT is more than 32 days, alarm signal is sent, reminds operations staff to notice that water outlet TP changes, The remaining sludge volume of increase.
The intelligent dephosphorizing Data Analysis Model, can be according to influent quality and sludge concentration, excess sludge discharge capacity, sludge age It is automatic to calculate secondary clarifier effluent TP etc. parameter, big data analysis is carried out, prejudges secondary clarifier effluent TP in advance, prompts operations staff Strengthen monitoring, carbon source or chemical dephosphorization medicament can be added in advance, ensure effluent quality.
The present invention is described in detail above in conjunction with embodiment, but person of ordinary skill in the field can manage Solution, on the premise of present inventive concept is not departed from, can also form each design parameter make a change in above-described embodiment Multiple specific embodiments, are the common excursion of the present invention, are no longer described in detail one by one herein.

Claims (10)

1. a kind of accurate medicine system of sewage disposal, it is characterised in that add component including processing pond group, dephosphorization agent, carbon source is thrown Component, disinfectant is added to add component and control assembly,
The processing pond group includes primary sedimentation tank, biological tank, secondary settling tank, the High-rate sedimentation set gradually according to sewage disposal order Pond, V-type filter tank and disinfecting tank, the biological tank include pre- anoxic pond, anaerobic pond, the anoxic pond and aerobic set gradually Pond；
Anaerobic pond and anoxic pond water inlet in the biological tank are respectively equipped with carbon source toss area, in the biological tank water outlet Dephosphorization agent toss area is respectively equipped with well, secondary clarifier effluent well and efficient sedimentation tank influent weir；In the disinfecting tank Water inlet is equipped with disinfectant toss area；Total water outlet at the secondary clarifier effluent Jing Chu and disinfecting tank rear portion is punished She You not total phosphorus on-line computing model；Total nitrogen on-line computing model is respectively equipped with the water outlet of the disinfecting tank and chlorine residue exists Line monitor；
The dephosphorization agent, which adds component, includes aluminium salt dephosphorization agent medicine storage pool and dephosphorization with ferric salt agent medicine storage pool, the aluminium salt dephosphorization agent storage Medicine pond adds pipeline by aluminium salt and is connected to removing at biological tank wet well, secondary clarifier effluent well and efficient sedimentation tank influent weir Phosphorus agent toss area；The dephosphorization with ferric salt agent medicine storage pool adds pipeline by molysite and is connected to secondary clarifier effluent well and High-rate sedimentation The dephosphorization agent toss area of Chi Jinshuiyanchu；
The disinfectant, which adds component, includes disinfectant medicine storing pot, and the disinfectant medicine storing pot adds pipeline by disinfectant and connects To the disinfectant toss area of the disinfecting tank water inlet, added in the disinfectant and solenoid valve, dosing are equipped with pipeline Pump and flowmeter；
The carbon source, which adds component, includes carbon source medicine storing pot, and the carbon source medicine storing pot adds pipeline by carbon source and is connected to the life The carbon source toss area of anaerobic pond and anoxic pond water inlet in thing pond；Added in the carbon source and solenoid valve is equipped with pipeline, added Teat pipette and flowmeter.
2. the accurate medicine system of sewage disposal according to claim 1, it is characterised in that the aluminium salt, which adds pipeline, to be included At least one drug discharging tube being connected with the aluminium salt dephosphorization agent medicine storage pool, at least two parallel connections being connected with the drug discharging tube The isocon of connection, each isocon connects one or more Zhi Liuguan to corresponding toss area, in the isocon End is equipped with the tandem tube for connecting all Zhi Liuguan, and solenoid valve is respectively equipped with the tandem tube between two neighboring Zhi Liuguan, Flowmeter and solenoid valve are equipped with each Zhi Liuguan；
The molysite add pipeline include be connected with the dephosphorization with ferric salt agent medicine storage pool at least one drug discharging tube, with it is described go out At least two isocons being connected in parallel that pencil is connected, each isocon connect one or more Zhi Liuguan to right Toss area is answered, the tandem tube for connecting all Zhi Liuguan is equipped with the end of the isocon, between two neighboring Zhi Liuguan Solenoid valve is respectively equipped with tandem tube, flowmeter and solenoid valve are equipped with each Zhi Liuguan；
The control assembly includes master controller, the total phosphorus on-line computing model, total nitrogen on-line computing model and chlorine residue on-line monitoring Instrument connection corresponding with the master controller respectively, the aluminium salt adds pipeline, molysite adds pipeline, disinfectant adds pipeline and carbon Source adds solenoid valve, dosing pump and the flowmeter connection corresponding with the master controller on pipeline；The master controller passes through The flow of each dosing pump of Frequency Converter Control of corresponding number.
3. the accurate medicine system of sewage disposal according to claim 2, it is characterised in that the dephosphorization agent adds component also Include the flushing line of connection corresponding with external water source, the flushing line is respectively communicated to the aluminium salt and adds pipeline and molysite The drug discharging tube of pipeline is added, solenoid valve is equipped with the flushing line；The carbon source adds component and further includes and external water source The flushing line of corresponding connection, the flushing line is connected to the drug discharging tube that the carbon source adds pipeline, in the flushing line It is equipped with solenoid valve.
4. the accurate medicine system of sewage disposal according to claim 2, it is characterised in that the carbon source is sodium acetate；Institute It is aluminium polychloride to state aluminium salt dephosphorization agent；The dephosphorization with ferric salt agent is Formula type dephosphorization with ferric salt agent；The disinfectant is hypochlorous acid Sodium.
5. the accurate medicine system of sewage disposal according to claim 1, it is characterised in that just heavy in the processing pond group Pond, biological tank, secondary settling tank, efficient sedimentation tank, the quantity of V-type filter tank and disinfecting tank are one or more.
6. a kind of accurate adding method thereof of sewage disposal, it is characterised in that comprise the following steps：
（1）Pending sewage is introduced into the processing pond group in the accurate medicine system of sewage disposal described in claim 1, makes sewage Pass sequentially through after primary sedimentation tank, biological tank, secondary settling tank, efficient sedimentation tank, V-type filter tank and disinfecting tank are processed and discharge；Set In the total phosphorus on-line computing model of total water outlet at secondary clarifier effluent Jing Chu and disinfecting tank rear portion, will detect respectively The value of secondary clarifier effluent total phosphorus TP1 and total water outlet total phosphorus TP2 at disinfecting tank rear portion are transmitted to master controller；It is arranged on The total nitrogen on-line computing model and chlorine residue on-line computing model of disinfecting tank water outlet are respectively by the water outlet total nitrogen TN's detected Value and the value of water outlet chlorine residue CL are transmitted to master controller；
（2）Aluminium salt dephosphorization agent adds
As water outlet total phosphorus TP1 >=0.25mg/L of single secondary settling tank, master controller is opened corresponding aluminium salt and is added on pipeline Dosing pump, aluminium salt dephosphorization agent, the aluminium are launched to the secondary settling tank to the dephosphorization agent toss area at corresponding biological tank wet well Salt dephosphorization agent is added than being adjusted according to following section：
When TP1 is between 0.25-0.30mg/L, aluminium salt dephosphorization agent is added than for 10mg/L；On this basis, when TP1's Value often rises the interval range of 0.05mg/L, and aluminium salt dephosphorization agent is added than just increasing increase than on the basis of in existing add 10mg/L；
When TP1 drops to below 0.25mg/L, and continue 6 it is small when, master controller closes the throwing that dosing pump stops aluminium salt dephosphorization agent Add, and pipeline is added to aluminium salt and is rinsed；
（3）Dephosphorization with ferric salt agent adds
Master controller calculates the water outlet total phosphorus average TP3 of each secondary settling tank, and as TP3 >=0.20mg/L, master controller is opened corresponding Molysite add dosing pump on pipeline, launch dephosphorization with ferric salt agent, the iron to the dephosphorization agent toss area of secondary clarifier effluent Jing Chu Salt dephosphorization agent is added than being adjusted according to following section：
When TP3 is between 0.20-0.30mg/L, dephosphorization with ferric salt agent is added than for 5mg/L；On this basis, when the value of TP3 Often rise the interval range of 0.1mg/L, dephosphorization with ferric salt agent is added than just increasing 5mg/L than on the basis of in existing add；TP3 Often decline the interval range of 0.1mg/L, dephosphorization with ferric salt agent is added than just reducing 5mg/L than on the basis of in existing add；
Meanwhile every 4 hours contrast the value of total water outlet total phosphorus TP2, as TP2 >=0.15mg/L, dephosphorization with ferric salt agent Add than just increasing 2.5mg/L than on the basis of in existing add；As TP2 ＜ 0.15mg/L, dephosphorization with ferric salt agent adds Than just reducing 2.5mg/L than on the basis of in existing add；
When TP3 is in 0.15-0.20mg/L, by adding than continuing to add dephosphorization with ferric salt agent for minimum 5mg/L；As TP3 ＜ 0.15mg/L, and it is continuous 6 it is small when after, master controller, which closes dosing pump and stops dephosphorization with ferric salt agent, to be added, and adds pipe to aluminium salt Road is rinsed；
（4）Carbon source adds
As the water outlet total phosphorus TP1 ＞ 2.5mg/L of single secondary settling tank, and continue 4 it is small when more than when, main controller controls carbon source adds Dosing pump on pipeline, the carbon source toss area of the anaerobic pond water inlet into corresponding biological tank launch carbon source；The throwing of carbon source Add than for：（TP1-0.5）The BOD equivalents of × 20/ carbon source, the dosage of carbon source are：Add the inflow of ratio × biological tank；When The water outlet total phosphorus content TP1 of single secondary settling tank is less than 0.5mg/L and for 6 hours, and stopping adds carbon source；
As water outlet total nitrogen TN >=12mg/L, main controller controls carbon source adds the dosing pump on pipeline, to corresponding biological tank In anoxic pond water inlet carbon source toss area launch carbon source；Carbon source add than for：（TN-12）The BOD of × 4/ carbon source works as Amount, the dosage of carbon source are：Add the inflow of ratio × biological tank；When water outlet total nitrogen TN contents are less than 12mg/L and continue 6 Hour, stopping adds carbon source；
（5）Disinfectant adds
The corresponding disinfectant of master controller unlatching adds the dosing pump on pipeline, is thrown to the toss area of disinfecting tank water inlet Disinfectant is put, the disinfectant is added than being adjusted according to following section：
As water outlet chlorine residue CL<During 0.05mg/L, disinfectant is added than for 25mg/L；When water outlet chlorine residue CL continuous four is small< 0.05mg/L, disinfectant are added than just increasing 1mg/L than on the basis of in existing add；
As 0.05mg/L≤CL≤0.1mg/L, disinfectant keeps existing and adds than constant；
As water outlet chlorine residue CL ＞ 0.1mg/L, and continue 4 it is small when after, disinfectant is added than just being added existing than basis Upper reduction 1mg/L；
（6）In sewage disposal process, according to corresponding condition, step is carried out（2）、（3）、（4）、（5）Feeding operations, until Treatment process is finished.
7. the accurate adding method thereof of sewage disposal according to claim 6, it is characterised in that the aluminium salt dephosphorization agent is polymerization Aluminium chloride；The dephosphorization with ferric salt agent is Formula type dephosphorization with ferric salt agent；The carbon source is sodium acetate, and the BOD equivalents of sodium acetate are 0.78。
8. the accurate adding method thereof of sewage disposal according to claim 6, it is characterised in that in step（3）In add molysite While dephosphorization agent, aluminium salt dephosphorization agent maintenance adds.
9. the accurate adding method thereof of sewage disposal according to claim 6, it is characterised in that step（2）Middle aluminium salt dephosphorization agent Toss area be the dephosphorization agent toss area at biological tank wet well, the dephosphorization agent toss area of secondary clarifier effluent Jing Chu or with this two Dephosphorization agent toss area at the heavy corresponding efficient sedimentation tank influent weir in pond；Step（3）The toss area of middle dephosphorization with ferric salt agent is heavy for two Dephosphorization agent toss area at the dephosphorization agent toss area or efficient sedimentation tank influent weir of Chi Chushuijingchu.
10. the accurate adding method thereof of sewage disposal according to claim 6, it is characterised in that it is described add it is more every than referring to The quality of the medicament added needed for processing 1L sewage, unit mg/L.
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