CN104355477B - Sewage treatment plant's chemical dephosphorization automaton and control method - Google Patents

Sewage treatment plant's chemical dephosphorization automaton and control method Download PDF

Info

Publication number
CN104355477B
CN104355477B CN201410460613.3A CN201410460613A CN104355477B CN 104355477 B CN104355477 B CN 104355477B CN 201410460613 A CN201410460613 A CN 201410460613A CN 104355477 B CN104355477 B CN 104355477B
Authority
CN
China
Prior art keywords
phosphorus concentration
formula
water
water inlet
dephosphorization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410460613.3A
Other languages
Chinese (zh)
Other versions
CN104355477A (en
Inventor
王佳伟
刘伟岩
董洋
崔春玥
刘磊
常江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Drainage Group Co Ltd
Original Assignee
Beijing Drainage Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Drainage Group Co Ltd filed Critical Beijing Drainage Group Co Ltd
Priority to CN201410460613.3A priority Critical patent/CN104355477B/en
Publication of CN104355477A publication Critical patent/CN104355477A/en
Application granted granted Critical
Publication of CN104355477B publication Critical patent/CN104355477B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a kind of sewage treatment plant's chemical dephosphorization automaton and control method, described device is provided with preliminary sedimentation tank, biological reaction pool and the second pond sequentially connected, the water inlet pipe of second pond connects with dosing pump, medicine storing pot and drug feeding pipeline, and is provided with online effusion meter, medicament effusion meter, online PLC and converter, online phosphate determination instrument and controller;The step of the method that described control device is controlled is perfect, and it is careful to calculate, and controls flexibly, have preferable phosphor-removing effect, and efficiency is high, and automaticity is the highest.The present invention is especially suitable for sewage treatment plant's chemical dephosphorization technique, trail run achieves extraordinary effect.

Description

Sewage treatment plant's chemical dephosphorization automaton and control method
Technical field
The invention belongs to a kind of sewage disposal technology, a kind of sewage chemical dephosphorization processing controls technology, particularly basis Amount of inlet water and the dosage of Inlet and outlet water phosphorus concentration timely automated adjustment chemical dephosphorization medicament, make the dephosphorization treatment effect of sewage more Good device and method.
Background technology
At home a lot of sewage treatment plants the most all uses biological phosphate-eliminating be lead, chemical dephosphorization is that auxiliary method is as sewage The phosphorus removing method processed.Traditional chemical dephosphorization generally adds Dephosphorization reagent at Aeration tank end, and its addition method includes: constant basis Add, add according to the feedforward of influent load, according to methods such as the phosphorus concentration feedback control of dispensing point add.Due to sewage There is bigger seasonality and day-night change in treatment plant's water inlet phosphorus load, uses these methods to exist greatly in actual moving process Some problems: 1, constant basis adds the change to influent load and can not promptly and accurately react, it is impossible to timely to dosage Make adjustment, it is often necessary to raising dosage is with adaptive peak load, and the medicament utilization rate making chemical dephosphorization is low, adds resource Consume, improve processing cost;2, the undue instrument that relies on causes system operation unreliable: throw according to the feedforward of influent load Add and add according to the feedback control of dispensing point phosphorus concentration all place one's entire reliance upon into water phosphorus concentration or toss area phosphorus concentration real-time Monitoring, and phosphorus on-line monitoring instrument cost of investment is high, maintenance requirement high, the water inlet of phosphorus concentration monitoring point and Aeration tank end water sample In owing to containing polluters such as substantial amounts of mud, causing the maintenance of phosphorus in-line meter to dramatically increase, sewage treatment plant is often It is difficult to safeguard in time, makes chemical phosphorus removal system be not normally functioning.Based on problem above analysis, need existing sewage disposal Chemical dephosphorization control system improves, and makes the dosage of Dephosphorization reagent obtain accurate, timely and stable control.
Summary of the invention
It is an object of the invention to solve above-mentioned technical problem, it is provided that a kind of sewage treatment plant chemical dephosphorization automatically controls dress Put and control method.This control apparatus and method are to remove according to amount of inlet water and Inlet and outlet water phosphorus concentration timely automated adjustment chemistry The dosage of phosphorus medicament, it is possible to ensure that the added amount of chemical of sewage chemical dephosphorization processing unit obtains accurately controlling timely, and Make chemical dephosphorization process process stabilizing to run efficiently.
It is an object of the invention to be realized by following technical proposals: sewage treatment plant's chemical dephosphorization automaton, if Having preliminary sedimentation tank, biological reaction pool and the second pond sequentially connected, preliminary sedimentation tank is provided with water inlet pipe, and second pond is provided with water inlet pipe and draining Pipe, the water inlet pipe of second pond connects with dosing pump, medicine storing pot and drug feeding pipeline, it is characterized in that: fill on the water inlet pipe of preliminary sedimentation tank Having online effusion meter, equipped with medicament effusion meter in the drug feeding pipeline that dosing pump connects with second pond, described dosing pump is equipped with control The online PLC of its flow and converter, equipped with online phosphate determination instrument on the drainage pipeline of second pond, be additionally provided with control Device, this controller and described online effusion meter and online PLC and converter, medicament effusion meter, online phosphate determination instrument are carried out Signal and control connect.
The method that above-mentioned sewage treatment plant sewage chemical dephosphorization automaton is controlled, is characterized in that including following Step:
1) provide data according to pharmaceutical supply business, determine drug concentration Cy, Dephosphorization reagent molecular weight Me, Dephosphorization reagent density ρ;According to Effluent criteria requirement, determine secondary clarifier effluent phosphorus concentration setting value Ceff;Determine that trivalent metal salt and chemical agent go The mol ratio coefficient f of dephosphorization is 1.2;Biological reaction pool is carried out once sampling in manual 24 hours, detects phosphorus concentration Cin_ 0,24 arrays obtained are as follows for presetting water inlet phosphorus concentration control array: Cin_0 (i), and wherein i is 1-24;In the controller Input above-mentioned data;
2) the d days manual inspection biological reaction pool inlet COD concentration CODin_d;The the one d days manual at t detection biology Reaction tank water inlet phosphorus concentration Cin_d (t), wherein, d is that system is run the d days, calculates and the deviation of the array that prestores: Δ _ d= Cin_d (t)-Cin_0 (t), unit is mg/L, and preset water inlet phosphorus concentration controlling array changing value is Δ _ d (mg/L), again gives birth to The phosphorus concentration that becomes to intake the same day controls array, i.e. Cin_d (i)=Cin_0 (i)+Δ _ d;Above-mentioned data input control system;
3) gather feed water flow gauge signal Q (t) and calculate the flow of inlet water of input controller;
Qk (t)=Q (t-m) formula (1)
Qk (t)-t chemical feeding points flow (m3/s);
Q (t-m)-(t-m) moment, flow of inlet water (m3/s)
M-flow lag coefficient, (h)
4) the biological reaction pool water inlet phosphorus concentration corresponding to current time chemical feeding points is calculated
Cdos (t)=Cin_d (t-n) formula (2)
In formula, Cdos (t)-chemical feeding points phosphorus concentration controls array (mg/L);
Cin_d (t-n)-biological reaction pool water inlet phosphorus concentration controls array (mg/L)
N-concentration lag coefficient, (h)
5) chemical feeding quantity needed is calculated according to formula (3)
qc = Qt * ( Cdos ( t ) - Ceff - CODin _ d 200 ) * 1000 31 * f ρ * Cy Me Formula (3)
In formula:
Qc-dosing flow, L/s
Qt-flow of inlet water, m3/s
Cdos (t)-chemical feeding points phosphorus concentration, mg/L
F-trivalent metal salt and chemical agent go the mol ratio coefficient of dephosphorization to be 1.2
Cy-drug concentration, %
Ceff-secondary clarifier effluent phosphorus concentration setting value, mg/L
Me-Dephosphorization reagent molecular weight, g/mol
ρ-Dephosphorization reagent density, kg/L
6) operating frequency of dosing pump is calculated according to formula (4);
Fhz=qc/ (F1*F2*F3) formula (4)
In formula: fhz=electric machine frequency, hz
Qc=dosing flow, L/s
F1=dosing pump flow and revolution speed ratio
F2=revolution speed and motor speed ratio
F3=motor speed and frequency ratio
7) frequency values of converter is set according to calculated operating frequency;
8) the flow value qon of taken at regular intervals dosing effusion meter, compares with formula (3) value of calculation, when deviation is more than m% Time, adjust the coefficient F1 in formula (4), until deviation is less than n%;
9) gather phosphorus concentration in-line meter data, calculate daily mean Ceff-av every day, when this value is higher than water outlet phosphorus concentration The p% of setting value Ceff, in formula 3, trivalent metal salt and chemical agent go the mol ratio coefficient f of dephosphorization to increase r%;When this value Less than the p% of water outlet phosphorus concentration value, in formula 3, trivalent metal salt and chemical agent go the mol ratio coefficient f of dephosphorization automatically to reduce R%.
10) gathering phosphorus concentration in-line meter data, periodic analysis two settles out the situation of change of water phosphorus concentration: when certain moment two The water phosphorus concentration that settles out is the most higher, i.e. 7 days have more than s days higher than water outlet phosphorus concentration setting value w% time, heighten biological reaction pool Water inlet phosphorus concentration controls in array the 1% of corresponding moment phosphorus concentration setting value;When certain moment two water phosphorus concentration that settles out is the most on the low side, Having in i.e. 7 days more than s days and be less than water outlet phosphorus concentration setting value u%, it is right to reduce in biological reaction pool water inlet phosphorus concentration control array Should the v% of moment phosphorus concentration value
11) regenerate into water phosphorus concentration control array;
12) 2 are repeated)~11) step
The reliable flow of inlet water of cardinal principle utility of this device is counted as mainly inputting for this control system, usability Can reliably converter as the main performance element of this control system, then utilize influent concentration exist regular change, And biological respinse cell system possesses certain cushioning effect to the change of water inlet phosphorus load, in conjunction with the manual biological respinse measured Pond water inlet phosphorus concentration data and secondary clarifier effluent online phosphorus concentration data the most automatically adjust water inlet phosphorus concentration and control array, according to Dosing flow online data adjusts the parameter preset of dosing pump converter the most automatically.
Beneficial effects of the present invention: using this device to carry out chemical dephosphorization and automatically control, city domestic sewage water outlet phosphorus is dense Degree stability contorting is at below 1mg/l, thus ensures that the stably reaching standard of water outlet phosphorus, trivalent metal salt and chemical agent go rubbing of dephosphorization You than stability contorting at below 1.5mol/mol.After being positioned over biological reaction pool due to the online concentration of phosphorus, more clean two settle out At water, be positioned over biological reaction pool before and among compared with, the online maintenance workload of phosphorus have dropped more than 50%.This control Even if system settles out water phosphorus concentration on-line computing model and the situation of the dosing effusion meter relatively low instrument deficient of the two reliability two Under, rely on feed water flow gauge, converter, dosing pump and controller to remain to realize the most reliably controlling, make system stability notable Improve.Therefore, the present invention has reliable and stable, and regulation in time, is safeguarded simple feature, and had good regulating effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Embodiment: sewage treatment plant's chemical dephosphorization automaton, is provided with preliminary sedimentation tank 3, the biological respinse sequentially connected Pond 4 and second pond 5, preliminary sedimentation tank is provided with water inlet pipe, and second pond is provided with water inlet pipe and drain pipe, the water inlet pipe of second pond and dosing pump 8, medicine storing pot 7 connects with drug feeding pipeline, and equipped with online effusion meter 2 on the water inlet pipe of preliminary sedimentation tank, dosing pump connects with second pond Drug feeding pipeline on equipped with medicament effusion meter 9, described dosing pump, equipped with controlling online PLC and the converter 6 of its flow, sinks two Equipped with online phosphate determination instrument 10 on the drainage pipeline in pond, it is additionally provided with controller 1, this controller and described online effusion meter Carry out signal with online PLC and converter, medicament effusion meter, online phosphate determination instrument and control to connect.
The control method of above-mentioned control device is as follows:
1) providing data according to pharmaceutical supply business, determine that drug concentration Cy is 6%, Dephosphorization reagent molecular weight Me is 51g/ Mol, Dephosphorization reagent density p 1.22kg/L;According to Effluent criteria requirement, determine that secondary clarifier effluent phosphorus concentration setting value Ceff is state 60% i.e. 0.6mg/L of family's one-level B discharge standard;According to laboratory results, determine that trivalent metal salt and chemical agent go The mol ratio coefficient f of dephosphorization is 1.2;Biological reaction pool is carried out once sampling in manual 24 hours, detects phosphorus concentration Cin_ 0,24 arrays obtained are as follows for presetting water inlet phosphorus concentration control array: Cin_0 (i), and wherein i is 1-24;In the controller Input above-mentioned data.
2) the 1st day manual inspection biological reaction pool inlet COD concentration CODin_1 is 360mg/L;1st day manual at 9 Carving detection biological reaction pool water inlet phosphorus concentration Cin_1 (9) is 3.5mg/L, calculates and the deviation of the array that prestores: Δ _ d=Cin_d T ()-Cin_0 (t)=3.5-5.21=-1.71mg/L, preset water inlet phosphorus concentration controlling array changing value is-1.71mg/L, weight Phosphorus concentration of intaking the newly-generated same day controls array, i.e. Cin_1 (i)=Cin_0 (i)-1.71;Above-mentioned data input control system.
3) gather feed water flow gauge signal Qt, input controller;
4) the biological reaction pool water inlet phosphorus concentration corresponding to current time chemical feeding points is calculated
Cdos (t)=Cin_d (t-4)
5) chemical feeding quantity needed is calculated
qc = Qt * ( Cdos ( t ) - Ceff - CODin _ d / 200 ) * 1000 / 31 * f ρ * Cy Me Formula (3)
In formula
Qc-dosing flow, L/s
Qt-flow of inlet water, m3/s
Cdos (t)-water inlet phosphorus concentration, mg/L
F-trivalent metal salt and chemical agent remove the mol ratio coefficient of dephosphorization, take 1.2mol/mol
Cy-drug concentration, takes 6%
Ceff-water outlet phosphorus concentration setting value, takes 0.6mg/L
Me-Dephosphorization reagent molecular weight, takes 102/2=51g/mol
ρ-Dephosphorization reagent density, takes 1.22kg/L
6) operating frequency of dosing pump is calculated according to formula (4);
f = qc F 1 * F 2 * F 3 Formula (4)
In formula
F=electric machine frequency, hz
Qc=dosing flow, L/s
F1=dosing pump flow and revolution speed ratio,
F 1 = 15.62 - 70 * 1450 * 60 f / 2 - 50 382 10500
F2=revolution speed and motor speed ratio, F2=0.26
F3=motor speed and frequency ratio, F3=60/2-50/f
7) frequency values of converter is set according to calculated operating frequency;
8) flow value of taken at regular intervals dosing effusion meter, compares with formula (3) value of calculation, when deviation is more than 5%, Adjust the coefficient F1 in formula 4, until deviation is less than 5%.
9) gather water outlet phosphorus concentration in-line meter data, calculate daily mean every day, when this value sets higher than water outlet phosphorus concentration The 20% of definite value, i.e. 0.72mg/L, in formula 3, trivalent metal salt and chemical agent go the mol ratio coefficient f of dephosphorization automatically to increase 1%;When this value is less than 20%, i.e. 0.48mg/L of setting value, in formula 3 trivalent metal salt and chemical agent go dephosphorization mole Automatically 1% is reduced than coefficient f.
10) gathering phosphorus concentration in-line meter data, periodic analysis two settles out the situation of change of water phosphorus concentration: when certain moment two The water phosphorus concentration that settles out is the most higher, i.e. 7 days have more than 4 days higher than water outlet phosphorus concentration setting value 10% time, i.e. 0.66mg/L, adjust High biological reaction pool water inlet phosphorus concentration controls in array the 2% of corresponding moment phosphorus concentration value;When certain moment two settles out water phosphorus concentration The most on the low side, i.e. 7 days have more than 4 days less than water outlet phosphorus concentration setting value 10% time, i.e. 0.54mg/L, reduce biological reaction pool Water inlet phosphorus concentration controls in array the 2% of corresponding moment phosphorus concentration value.
11) regenerate into water phosphorus concentration control array;
12) 2 are repeated)~11) step.
This example is the best through running three months effects, and water outlet phosphorus concentration reduces 0.2mg/L, can be with stability contorting 0.6 ± 0.1mg/l, trivalent metal salt and chemical agent go the mol ratio stability contorting of dephosphorization at 1.2mol/mol, and phosphorus is put online The maintenance workload that is placed in second pond drainage pipeline compared with being positioned in biological reaction pool is from reducing to monthly 1 time 1 times a week, monthly Saving pharmaceutical quantities 180 tons, count more than 60,000 yuan, phosphorus on-line maintenance takes saving two over thousands of yuan, and system stability significantly improves.

Claims (1)

1. a control method for sewage treatment plant's chemical dephosphorization automaton, is provided with preliminary sedimentation tank (3), the life sequentially connected Thing reaction tank (4) and second pond (5), preliminary sedimentation tank is provided with water inlet pipe, and second pond is provided with water inlet pipe and drain pipe, the water inlet of second pond Pipe connects with dosing pump (8), medicine storing pot (7) and drug feeding pipeline, equipped with online effusion meter (2) on the water inlet pipe of preliminary sedimentation tank, adds Equipped with medicament effusion meter (9) in the drug feeding pipeline that Teat pipette connects with second pond, described dosing pump is equipped with controlling the online of its flow PLC and converter (6), equipped with online phosphate determination instrument (10) on the drainage pipeline of second pond, be additionally provided with controller (1), this controller and described online effusion meter and online PLC and converter, medicament effusion meter, online phosphate determination instrument are carried out Signal and control connect;It is characterized in that the method that above-mentioned sewage treatment plant sewage chemical dephosphorization automaton controls include with Lower step:
1) provide data according to pharmaceutical supply business, determine drug concentration Cy, Dephosphorization reagent molecular weight Me, Dephosphorization reagent density p;Root According to Effluent criteria requirement, determine secondary clarifier effluent phosphorus concentration setting value Ceff;Determine that trivalent metal salt and chemical agent go dephosphorization Mol ratio coefficient f be 1.2;Biological reaction pool is carried out once sampling in manual 24 hours, detects phosphorus concentration Cin_0, 24 arrays arrived are as follows for presetting water inlet phosphorus concentration control array: Cin_0 (i), and wherein i is 1-24;Input in the controller Above-mentioned data;
2) the d days manual inspection biological reaction pool inlet COD concentration CODin_d;The the one d days manual at t detection biological respinse Pond water inlet phosphorus concentration Cin_d (t), wherein, d is that system is run the d days, calculates and the deviation of the array that prestores: Δ _ d=Cin_d T ()-Cin_0 (t), unit is mg/L, and preset water inlet phosphorus concentration controlling array changing value is Δ _ d (mg/L), regenerates the same day Water inlet phosphorus concentration controls array, i.e. Cin_d (i)=Cin_0 (i)+Δ _ d;Above-mentioned data input control system;
3) gather feed water flow gauge signal Q (t) and calculate the flow of inlet water of input controller;
Qk (t)=Q (t-m) formula (1)
Qk (t)-t chemical feeding points flow (m3/s);
Q (t-m)-(t-m) moment, flow of inlet water (m3/s)
M-flow lag coefficient, (h)
4) the biological reaction pool water inlet phosphorus concentration corresponding to current time chemical feeding points is calculated
Cdos (t)=Cin_d (t-n) formula (2)
In formula, Cdos (t)-chemical feeding points phosphorus concentration controls array (mg/L);
Cin_d (t-n)-biological reaction pool water inlet phosphorus concentration controls array (mg/L)
N-concentration lag coefficient, (h)
5) chemical feeding quantity needed is calculated according to formula (3)
In formula:
Qc-dosing flow, L/s
Qt-flow of inlet water, m3/s
Cdos (t)-chemical feeding points phosphorus concentration, mg/L
F-trivalent metal salt and chemical agent go the mol ratio coefficient of dephosphorization to be 1.2
Cy-drug concentration, %
Ceff-secondary clarifier effluent phosphorus concentration setting value, mg/L
Me-Dephosphorization reagent molecular weight, g/mol
ρ-Dephosphorization reagent density, kg/L
6) operating frequency of dosing pump is calculated according to formula (4);
Fhz=qc/ (F1*F2*F3) formula (4)
In formula: fhz=electric machine frequency, hz
Qc=dosing flow, L/s
F1=dosing pump flow and revolution speed ratio
F2=revolution speed and motor speed ratio
F3=motor speed and frequency ratio
7) frequency values of converter is set according to calculated operating frequency;
8) the flow value qon of taken at regular intervals dosing effusion meter, compares with formula (3) value of calculation, when deviation is more than m%, Adjust the coefficient F1 in formula (4), until deviation is less than n%;
9) gather phosphorus concentration in-line meter data, calculate daily mean Ceff-av every day, when this value sets higher than water outlet phosphorus concentration The p% of value Ceff, in formula 3, trivalent metal salt and chemical agent go the mol ratio coefficient f of dephosphorization to increase r%;When this value is less than The p% of water outlet phosphorus concentration value, in formula 3, trivalent metal salt and chemical agent go the mol ratio coefficient f of dephosphorization automatically to reduce r%;
10) gathering phosphorus concentration in-line meter data, periodic analysis two settles out the situation of change of water phosphorus concentration: settle out when certain moment two Water phosphorus concentration is the most higher, i.e. 7 days have more than s days higher than water outlet phosphorus concentration setting value w% time, heighten biological reaction pool water inlet Phosphorus concentration controls in array the 1% of corresponding moment phosphorus concentration setting value;When certain moment two water phosphorus concentration that settles out is the most on the low side, i.e. 7 It has more than s days less than water outlet phosphorus concentration setting value u%, reduce biological reaction pool water inlet phosphorus concentration control in array to correspondence time Carve the v% of phosphorus concentration value;
11) regenerate into water phosphorus concentration control array;
12) 2 are repeated)~11) step.
CN201410460613.3A 2014-09-11 2014-09-11 Sewage treatment plant's chemical dephosphorization automaton and control method Active CN104355477B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410460613.3A CN104355477B (en) 2014-09-11 2014-09-11 Sewage treatment plant's chemical dephosphorization automaton and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410460613.3A CN104355477B (en) 2014-09-11 2014-09-11 Sewage treatment plant's chemical dephosphorization automaton and control method

Publications (2)

Publication Number Publication Date
CN104355477A CN104355477A (en) 2015-02-18
CN104355477B true CN104355477B (en) 2016-08-17

Family

ID=52522818

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410460613.3A Active CN104355477B (en) 2014-09-11 2014-09-11 Sewage treatment plant's chemical dephosphorization automaton and control method

Country Status (1)

Country Link
CN (1) CN104355477B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104958984A (en) * 2015-06-30 2015-10-07 成都市新都区鑫悦空气净化设备厂 Catalytic pool for paint mist treatment
CN108002657A (en) * 2017-12-24 2018-05-08 苏州克莱尔环保科技有限公司 A kind of sewage treatment process
CN112919727A (en) * 2020-09-16 2021-06-08 金风环保有限公司 Chemical phosphorus removal and medicine adding control method and equipment
CN113087231B (en) * 2021-05-12 2022-11-15 重庆市生态环境监测中心 Automatic dosing system for sewage treatment and application thereof
CN113636723A (en) * 2021-08-20 2021-11-12 广州市华绿环保科技有限公司 Dephosphorization of handling domestic sewage adds medicine automated control system
CN115196735B (en) * 2022-09-14 2023-02-03 国投信开水环境投资有限公司 Phosphorus removal agent adding method and device for efficient sedimentation tank

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1654352A (en) * 2005-01-06 2005-08-17 重庆大学 System and method for urban sewage chemical-biologic composite deep phosphorous removal
CN1990393A (en) * 2005-12-26 2007-07-04 北京城市排水集团有限责任公司 Five-factor wastewater treating apparatus
CN204097287U (en) * 2014-09-11 2015-01-14 北京城市排水集团有限责任公司 Sewage work's chemical dephosphorization automatic control device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1654352A (en) * 2005-01-06 2005-08-17 重庆大学 System and method for urban sewage chemical-biologic composite deep phosphorous removal
CN1990393A (en) * 2005-12-26 2007-07-04 北京城市排水集团有限责任公司 Five-factor wastewater treating apparatus
CN204097287U (en) * 2014-09-11 2015-01-14 北京城市排水集团有限责任公司 Sewage work's chemical dephosphorization automatic control device

Also Published As

Publication number Publication date
CN104355477A (en) 2015-02-18

Similar Documents

Publication Publication Date Title
CN104355477B (en) Sewage treatment plant's chemical dephosphorization automaton and control method
CN110862188B (en) Chemical phosphorus removal accurate dosing system and control method
CN109879474B (en) Dynamic adjustment type sewage working condition treatment system
CN101659462B (en) Automatic dosing control system of coagulant and operation method
CN102366680B (en) Seawater coagulation turbidity removing system
CN114230110B (en) Short-range intelligent phosphorus removal and medicine addition control method, equipment and system for sewage treatment
CN105439285B (en) A kind of regulation method of sewage treatment
CN114275876A (en) Accurate and intelligent carbon source adding control system and method
CN204097287U (en) Sewage work's chemical dephosphorization automatic control device
CN202181232U (en) Coagulation turbidity-removal system for seawater
CN110642454A (en) Full-automatic pesticide wastewater treatment system and control method
CN210313844U (en) Automatic electroplating effluent treatment plant of ration medicine
US20200024169A1 (en) Method to control a process variable
CN104016469B (en) The full-automatic control technique apparatus and method of a kind of sewage physicochemical process
CN107074598A (en) Wastewater treatment operations method
EP3052446B1 (en) Plant and method for treatment of waste water in an activated sludge plant
CN204848525U (en) A integration treatment device for electroplating wastewater treatment
CN111115944A (en) Full-automatic chemical wastewater treatment system and control method
CN205035231U (en) Golf course domestic water processing apparatus
CN204009501U (en) Be applicable to the aeration robot control system(RCS) hardware structure that town sewage is processed
CN216513197U (en) Slag water pretreatment device of waste incineration power plant
CN203653385U (en) Hospital wastewater treatment system
CN217148887U (en) AAO technology carbon source adding control system
CN108557991B (en) Method for regulating aeration quantity of MBR (membrane bioreactor) device and method for treating landfill leachate by using MBR device
CN212770334U (en) Integrated sewage treatment device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant