WWTP (SCADA)

Chào các Bác,
theo tớ nghĩ thì luôn luôn phải mầy mò. Nguyên tắc "Thử-Sai" luôn luôn là chìa khoá của tiến bộ khoa học kỹ thuật trong mọi thời đại.
to bác Lan,
tôi không phải là chuyên nghành điều khiển tự động, nhưng nếu có thể nhờ bác để ý giúp, nếu bay giờ chưa có DK thì sau này cũng được, mấy vận đề sau:
- Giá thành xử lý nước theo công nghệ này. vnd/m3.
- chất lượng nước đầu vào và đầu ra.
Rất cám ơn bác trước,
stp

SEGHERSENGINEERINGWATER NV
SONADEZI - VIETNAM
PROGAMMABLE LOGICAL CONTROLLER
1.SUBJECT
This specification is part of the contract and covers the description of a PLC and structure of the program for a biological waste water treatment plant.
PLC is the abbreviation of Programmable Logic Controller. The PLC that is used in our waste water treatment plants, is the Siemens S5-series programmable controllers.
The Siemens S5-series allow very complex functions, such as PID controllers, conversion of analog measurements to engineering values, etc..
For each installation these specific functions of the PLC can be defined . For this purpose different hardware modules are used to built the PLC.
The following modules are available:
- The power supply unit unit converts the 230/120 VAC power supply to the 24VDC power that is needed for the CPU.
- The CPU or central processing unit is responsable for carrying out the program introduced in its memory.
The Siemens CPU family exist out several CPU-types in order to meet the specific demands of an installation. The difference between CPU-types is mostly a matter of memory capacity and cyclus time (time to execute once the complete program).
The CPU-type is also dependent on the complexity of the installation such as the number of motors and valves, the different type of regulations that are needed, the communication with visualisation programs, the communication with other PLC etc.
- Digital input modules can be devided in different types depending on the number of digital inputs per module. These units control wether signals are present or not (1 or 0 signal).
The modules are used for information coming from level switches, motor-information such as motor is running, motor is in alarm, valve-information such as valve open position, valve closed position valve is running open, valve is closing, valve alarm etc.
- Digital output modules are also devided in different types depending on the number of digital outputs avialable per module. These modules are used for activation of motors, valves, etc.
- Analog input modules are not only divided on the number of outputs avaiable, but also on the type of analog signal (mA or Volt outputs) and on the signal given ( 4mA to 20mA or - 20mA to 20mA or 0mA to 20mA or 0VDC to 10VDC, etc.). These modules are used for information coming from level measurements, flow measurements, pH measurements,
temperature measurements, valve positions etc.
Analog output modules are mostly used for controlling the percentage of opening of valves, controlling pumps, etc.
External time modules allow to define time controlled functions. The external counter modules allow to count pulses of 500 HZ.
Analog limit blocks allow to compare limits values with actual readings.
Communication modules (CP) are used for printing out alarm messages, specific messages, warnings together with time and date on printer devices.
Technology modules IP, that are used for special regulations such as temperature regulations, positioning functions, etc.
Output relay module
Memory modules (EPROM or EEPROM) are used to store a copy of the program on. In case of power loss and if no back-up battery is installed; the program can be reintroduced in the CPU by switching the run/stop switch to the copy mode.
Bus modules connect the CPU with the other modules (mentionned above).
Note that some time and counter functions are standard included in the central processing unit CPU of the PLC.
The modular structure of the PLC allows to optimise the PLC such that it suits best to the specific demands of the waste water treatment plant.
The different modules are installed on bus modules. These bus modules allow the communication between the module and the central processing unit CPU.
The central processing unit CPU has the following features:
- slot for memory module
- lithium battery (for keeping program in memory if there is no power present)
- sub-D connecor for connection of PC
- switch for power supply
- run/stop switch
The software is the S5-DOS copyright written by Siemens. This software allows to program the PLC in one of the STEPS languages. Note that the software can not be used without a hardware key built in the PC.
2. STRUCTURE OF THE PLC PROGRAM
In the PLC (programmable logical controller) the block OBI is cyclical treated. The overview of the different parts programmed in this block and in the other organisation blocks is as follows:
OB1 : ORGANISATION BLOCK 1
SPA PB1 SPA FB250
SPA FB204
SPA PB2 SPA FB206

SPA PB3 SPA FB202
SPA PB4 SPA FB203
SPA PB5 SPA FBI 97
SPA FBI 98
SPA FB200
SPA FB210
SPA FB211
SPA FB213
SPA FB215
SPA FB216
SPA PB6 SPA FB201
SPA PB7 SPA FB219
SPA PB8 SPA FB208
SPA PB9
SPA PB10
SPA FB214
BE
OB13 : ORGANISATION BLOCK 13
SPA FB207
BE
OB20 : ORGANISATION BLOCK 20
SPA PB100
BE
OB21 : ORGANISATION BLOCK 21
SPA PB100
BE
3. Organisation block OB1
OB1 is the most important organisation block in the PLC. This block is cyclical treated. From this block jumps to other standard block are possible. The following list gives an overview of the standard blocks that frequently used.
PB 1 The block PB1 scales the analogue measurements (with FB250). Possible analogue measurements are level measurements, flow measurements, pH-measurements, temperature measurements, pressure measurements,
oxygen-measurements, turbi***y measurements, etc.. The scaling of the measurement indicates to the pie that a certain mA-signal of a measurement is equal to a certain measurement. As example for a level measurement this
means that 0 mA is equal to 0 % level, 20 mA is equal to 100% level).
A second part of this block PB1 defines the switchflags on which certain actions are taken by the PLC (with FB204). Note that for each analogue measurement 6 switchflags are present. Three high level switchflags HI, H2 and H3 and three low level switchflags LI, L2 and L3 are defined.
If a level measurement is present: if level lower than 20% (= low level - LI switchflag) than stop pump. If level higher than 50% (= high level - HI) than start pump,
PB 2 The block PB2 is used to define system flags and pulses. The system flags are used to avoid that after PLC-start up all the motors can start simultaneously.
The system pulses defined are the second-, 1/2second-, 5 second-, minute-, hour- and daypulse.
These pulses and system flags are defined in the standard function block FB206.
PB 3 The program block PB3 filters digital signals from the field (e.g. floating ball level switches). Note that for each digital signal the standard filtration block FB202 is activated . Note that each digital signal has its own time.
PB 4 The block PB4 includes the matrix phase control for Unitank equipment (with standard FB203).
The matrix includes 40 different phases for normal regime and 4 phases for non-feeding regime. Each phase has its own phase time and enables/disables certain equipment of the installation.
PB 5 This program block defines the automatic control flags for all motors (one segment per motor).
Note that the block will activate some of the standard function blocks with their specific control.
Some examples are:
FB197 :
This block assures that only one aerator can start at the time. After the interlock time the second one can start, etc.
The block also does not allow that the same aerator can start more than X times per hour.
FB198:
This block controls the dosing of ureum if installed.
FB200:
This block defines the dosing time for acid, basic solutions. The dosing time is dependant of the actual pH measurement, the ideal pH of the installation and some other variable factors.
FB210:
This block controls the mixers if installed. Time or continues control can be modified by an operator.
FB211:
This block controls the functioning of the aerators : time or oxygen control .
FB213:
This block controls the functioning of the sludge ejector.
FB215:
This block defines the priority of motors. The priority of motors is applicable if at least two pumps are installed. The functioning of the pumps is dependent of the level. Note that the pump with priority 1 starts at switchflag HI and stops
at switch flag LI. The pump with priority 2 starts at H2 level and stops at L2 level.
Note that the pump priority changes automatically after one week.
FB216:
This block defines the priority of motors that can not function together (standby-function). Only one pump can start - pump with priority 1. If priority 1 pump fails, the pump with priority 2 will take over if the start con***ions for priority pump 1 are OK.
PB 6 This block includes the motor control. Note that for each motor the standard control block defines whether the motor can function, is in alarm, or can stop. (One FB201 call per motor, one motor per segment.)
PB 7 This block includes the valve control. For each valve the standard control block defines whether the valve is open, closed, is running open, is running closed or if the valve is in alarm. (One FB219 call per valve, one valve per segment)
(If the automatic control of the valves is other than only the matrix-control, the ad***ional logic is included in the beginning of the segment)
PB 8 This block includes the alarm logic (alarm lamps, alarm bits for PC, alarm groups)
Note that 3 alarm levels are present. Alarm level 1 : high priority alarm that needs immediate action. Alarm level 2 : low priority alarm that needs action.
Alarm level 0: alarm is neglected.
The alarm logic is defined in the standard function block FB208.
PB 9 bit/byte/word concentration for PC (if visualisation package is included in the scope of the installation).
PB 10 SEND and RECEIVE (if PLC-network is installed)
FB214 Totaliser : counter total m3 in/out the installation, KWH-counters, etc.
4. Organisation block OB13
This organisation block has a fixed scantime of 500 msec.
The block is used for activation of the: PID-control (using OB251) flag flip-flop for second-pulse generation
5. Organisation block OB20
In this block only PB100 is activated.
PB100 all actions needed for start-up after stop PLC or power break
6. Organisation block OB21
In this block only PB100 is activated.
PB100 all actions needed for start-up after power break
7. Documents
The client will receive copy of the following documents
- functional description of the pie-program
- Functional description of the visualisation
- program print-out

KÍNH GỬI: Bác Steppy!
trích Steppy Gửi lúc 18:29, 22/06/05
===============================================
.......................................................
nếu bay giờ chưa có DK thì sau này cũng được, mấy vận đề sau:
- Giá thành xử lý nước theo công nghệ này. vnd/m3.
- chất lượng nước đầu vào và đầu ra.
===============================================
Mình chỉ quan tâm đến điều khiển, đành hẹn lại Bác vậy.
XIN LỖI!

Cám ơn Bác Lan nhiều, nếu có điều kiện và thời gian thì phiền bác để ý giúp. Em vẫn thỉnh thoảng vào topic này thăm Bác và anh em.

DESIGN WORK ENGINEERING​

CENTRAL WASTE WATER TREAMENT PLANT ​

INDUSTRIAL ZONE of BIENHOA 2 ​

PHASE 1 UNITANKđ ​

Single Stage Aerobic rev.1 MARCH 1997​

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TABLE OF CONTENTS
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A. PRELIMINARY DESIGN
A.1. PRESENTATION OF THE PROJECT
A.2. PRELIMINARY DESIGN & PRACTICAL IMPLEMENTATION
B. PROCESS ENGINEERING
B.1. DESIGN CHARACTERISTICS
B.1.1. Influent characteristics of phase 1
B.1.2. Design parameters
B.1.3. Effluent quality
B.2. CONCEPTUAL PROCESS ENGINEERING & DESIGN INFORMATION+DESCRIPTION AND SCOPE OF MATERIALS AND CONSTRUCTION TECHNIQUES TO BE USED TO BE USED
B.2.1.Pumppit B01
B.2.2. Automatic sieve S0102
B.2.3. Buffer tank B02
B.2.4. Alarm tank B03
B.2.5. Fysico chemical treatment B04
B.2.6. UNITANK đ single stage aerobic B05/B06/B07
B.2.7. Sludge thickener B09
B.2.8. Effluent pit B09
B.2.9. Effluent measuring pit K10
B.2.10 COMPOSTELLAđ
B.3. PROCESS FLOW DIAGRAM
B.4. HYDRAULIC PROFILE
B.5. GENERAL ARRANGEMENT DRAWINGS
B.5.1.General Layout
B.5.2. Equipment & instrumentation implantation
B.6. DESCRIPTION OF THE LOGICS FOR PLC CONTROL
B.6.1. Pumppit B01
B.6.2. Automatic sieve S0102
B.6.3. Buffer tank B02
B.6.4. Alarm tank B03
B.6.5. Fysico chemical treatment B04
B.6.6. UNITANK đ single stage aerobic B05/B06/B07
B.6.6.1 General description of the matrix control
B.6.6.2 Control of matrix depending equipment and valves
B.6.7. Sludge thickener B09
B.6.8. Effluent pit B09
B.6.9. Effluent measuring pit K10
C. CIVIL WORKS
C.I. CIVIL STRUCTURE AND FORMWORK DRAWINGS
C.2. COMPLETE SPECIFICATIONS FOR CONCRETE WORKS COMPLETE SPECIFICATIONS FOR STRUCTURE WORKS
D. EQUIPMENT AND PIPING
D.1. INDIVIDUAL DATA SPECIFICATIONS SHEETS FOR EQUIPMENT INQUIRIES
D.2. DESIGN FOR FABRICATING ITEMS IN SHOP
D.3. PIPING AND PIPING SUPPORT DRAWINGS
D.4. COMPLETE PIPING SPECIFICATION FOR MATERIAL AND INSTALLATION
E. ELECTRICAL COMPONENTS AND INSTRUMENTS
E.1. ELECTRICAL LOOP DRAWINGS
E.2. SPECIFICATIONS FOR ELECTRICAL COMPONENTS
E.2.1. Low Tension panel
E.2.2. PLC
E.3. SPECIFICATIONS FOR INSTRUMENTATION
E.4. COMPLETE SPECIFICATIONS FOR THE INSTALLATION OF ELECTRICAL
F. MANUALS
OPERATING AND MAINTENANCE MANUAL
G. ANNEXES
G.1. LISTS
Drawing list
Basin List
Equipment list
Instrumentation List
Valve List
G.2. VENDORS LIST
G.3. STRUCTURAL CALCULATIONS
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Design engineer: SEGHERS ENGINEERING WATER NV
Address : Grote Baan 63 3150 WESPELAAR BELGIUM
Tel.No 00-32-16-60.82.11
Fax No 00-32-16-60.61.64
Responsible persons:
Mr. Johan DE ROUCK Project Engineer
Mr. Werner VAN HUNSEL Civil Engineer.
Được lan0303 sửa chữa / chuyển vào 16:23 ngày 26/06/2005

CONSTRUCTION OF A UNITANKđ ​

WASTE WATER TREATMENT PLANT CIVIL WORKS​

GENERAL CON***IONS​

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1. DEFINITIONS
"Client", "Design Engineer", "Contractor" and "Sub-contractor" mentioned as such in these General Con***ions shall have the meanings hereby assigned to them:
Client:
SONADEZI COOPERATION FOR THE DEVELOPMENT OF BIEN HOA INDUSTRIAL ZONE BIEN HOA
Address : Nga Ba Vung Tau Khu Cong Nghiep Bien Hoa DONG NAI PROVINCE VIETNAM
Tel No 00-84-61-836386
Fax No 00-84-61-836250
Responsible person:
Mr. NGUYEN VAN VY Vice director
Design engineer:
SEGHERS ENGINEERING WATER NV
Address : Grote Baan 63 3150 WESPELAAR BELGIUM
Tel.No 00-32-16-60.82.11
Fax No 00-32-16-60.61.64
Responsible persons:
Mr. Johan DE ROUCK Project Engineer
Mr. Werner VAN HUNSEL Civil Engineer.
Contractor
Person, firm or company whose tender has been accepted by the Main Subcontractor and includes the Contractor''s personal representatives, successors and permitted assignees.
Sub-Contractor
Person, firm or company to whom any part of Contractor''s work has been sub-let by Contractor with the consent in writing of the Main Subcontractor.
All personnel and work of the Sub-Contractor is part of and underfull responsibility of the Contractor.
The term work includes all plant, equipment, labor, materials and other facilities to be furnished by Contractor (or his subcontractor) to complete the work as required by the Contract and as understood as "good workmanship".
2. EXISTING CON***IONS
The Contractor by tendering, shall be deemed to have visited the site and to have satisfied himself as to all the existing con***ions and circumstances affecting the contract price.
The Soil investigation report can be consulted at the office of the client.
The Contractor can''t claim any ad***ional costs or delays due to unforeseen difficulties, weather con***ions, hidden objects, unforeseen ad***ional works or unexpected soil con***ions if not mentioned explicit in tender.
All works, which make no part of the contract, executed by the Contractor without written order by the Client directly - shall be considered as done at Contractor''s own risks and expenses.
3. DRAWINGS and SPECIFICATIONS
Drawings and specifications issued by Design Engineer to Contractor shall be part of the contract documents and no changes in or deviations from such drawings and specifications shall be made except by written order of the Design Engineer. Design Engineer shall furnish ad***ional instructions as are necessary for the proper execution of the work.
Only drawings from the Design Engineer with a stamp "GOOD FOR EXECUTION" may be used for the execution of the works.
4. MATERIALS and WORKMANSHIP
a. Unless otherwise specified in the contract documents, all material furnished by Contractor to be incorporated in the work shall be new and be of the equal quality as specified in the specifications or of equal approved quality.
If required by Design Engineer or client, Contractor shall give satisfactory evidence as to the kind and quality of the materials.
Contractor will be responsible for all consequences arising out of the use of materials other than those specified in the contract documents, for which no approval from the Design Engineer has been obtained.
b. Unless otherwise specified in the contract documents, Contractor shall supply and pay for all materials, labor, equipment, related works, transportation and all other facilities required for the proper execution and completion of the work.
c. The work shall be executed in the best and most workmanlike manner by qualified, careful, and efficient workers in strict conformity with the best standard practices.
Contractor shall at all times enforce strict discipline and good order among his employees and shall not employ on the work any unfit person or anyone not skilled in the work assigned to him. Client shall have the right to require Contractor to remove from the work such employees as client deems incompetent, careless, insubordinate or inimical to the progress of the work.
5. CLEANING UP
Contractor shall at all times keep the premises free from accumulation of waste material or rubbish caused by his employees or work. Especially, all access roads of the factory used by the Contractor shall by cleaned frequently and/or on demand of the client.
At the completion of his work and before final payment, Contractor shall tear down and remove all temporary structures and connections built by or for him, remove all construction plants used by him, repair and replace any existing embankments, fences or other structures which were removed or injured by his operations or employees.
Contractor shall clean and remove all debris, rubbish and excess excavated material due to his operations from the premises and shall leave the premises and the work in perfect order and repair, and broom clean and ready for use.
6. RESPONSIBILITY for WORK. EQUIPMENT. MATERIALS & PROPERTY
Contractor shall conduct the work at his sole risk and assume full responsibility for all materials and work performed until completion and final acceptance of the work. In the event the contract documents provide that Contractor shall utilize equipment or materials furnished by others for erection or installation, Contractor shall unload and store such equipment or materials at no ad***ional cost to Client and shall furnish written receipts for the items received. Contractor shall be responsible for the protection of such equipment or materials as well as of his work and of the Client''s property.
Any loss or damage sustained to said equipment, materials, work or property until final payment shall be made good by Contractor at no cost to the Client.
7. SAFETY
Contractor shall take all necessary precautions for the safety of employees on the work and shall comply with all applicable provision of all safety laws and building codes and safety requirements of the Client to prevent accidents or injury to persons or property on, about, or adjacent to the premises where the work is being performed.
Contractor shall erect and properly maintain at all times, as required by the con***ions and progress of the work, all necessary safeguards for the protection of workmen and the public and shall post danger signs warning against hazards created by such features of construction as protruding nails, hoists, wall holes, elevator hatchways, scaffolding, window openings, stairways and falling materials and he shall designate a responsible member of his organization on the work whose duty shall be the prevention of accidents. The name and position of any person so designated shall be reported to the Client.
8. INSPECTION and TESTS
Design Engineer and Owner shall at all times have access to the work wherever it is in preparation or progress and Contractor shall provide proper facilities for such access and for inspection.
9. CORRECTION OF THE WORK
Contractor shall promptly remove from the premises all materials and work condemned by the Design Engineer or Client as failing to conform to this contract, and Contractor shall promptly replace and re-execute all such work and materials in accordance with this contract and without expense to the Client and shall bear the expense of making good all work of other Contractors destroyed or damaged by such removal or replacement.
10. SUPERINTENDENT
Contractor shall keep on its work during the progress thereof, a competent Superintendent with authority to act for Contractor and any necessary assistants, all satisfactory to the Client.
The Superintendent shall represent Contractor in his absence and all directions given to him shall be binding as if given by Contractor. Contractor shall give efficient superintendent to the work using his best skill and attention
11. DELAYS
If Contractor is delayed in the completion of his work under this contract due to a "force majeure" (fire, floods, general strikes, or other causes beyond the control of and without the fault or negligence of Contractor), the time of completion specified shall be extended for a period equivalent to the time of such delay, as far as such "force majeure" is accepted by the Client. No claim other than for an extension of time as above provided, shall be made or asserted by the Contractor by reason of any delays for any cause whatsoever.
In case of such "force majeure", Contractor shall announce such a fact to the Client by written massage within 24 hours.
12. CHANGES IN WORK
In giving instructions, the Design Engineer or the Client shall have authority to make minor changes in the work, not involving extra cost, and not inconsistent with the purpose of the work.
Without invalidating the contract, the Design Engineer or the Client may order extra work or make changes by altering, adding to, or deducting from the work, the contract sum being adjusted accordingly.
Contractor shall maintain separate records of such cost which shall be subject to au*** and approval of the Client and supported by certified time sheets, receipt bills and other certified documents related to the said extra work.
13. INDEMNIFICATION AND INSURANCE
Contractor assumes entire responsibility and liability for damages on account of any bodily injury, including death resulting there from, or injury to or damage to property resulting of sustained by any person or persons, including Design Engineer and Client, by reason of any act or omission, whether negligent or otherwise, on the part of the Contractor, its employees, agents or Sub-contractors, in connection with performing or failing to perform the work under this Agreement. He agrees to defend and hold not responisible the Design Engineer and client, and the agents, servants or employees of both.
Contractor shall maintain insurance as will protect him from claims under workmen''s compensation acts, and other applicable employee benefit acts.
14. USE OF PREMISES BY CONTRACTOR
Contractor shall confine his apparatus, the storage of materials and the operations of his workmen to limits indicated by law, ordinances, permits or directions of The Client and shall not unreasonably encumber the premises with his materials.
Contractor shall not load or permit any part of the structure to be loaded with a weight that will endanger its safety.
Contractor shall enforce the Client''s instructions regarding signs, advertisements, fires and smoking.
15. USE OF WORK PRIOR TO COMPLETION
The client shall have the right to use or occupy any parts of the work prior to completion and such use or accupancy shall not constitue any approval or acceptance.
16. SECRECY
Contractor shall treat as confidential all technical information belonging to the Client as well during the performance of the construction as thereafter. Contractor agrees not to use any of such information except for the purposes of this contract. Contractor agrees to use all reasonable and customary efforts to avoid disclosure to third parties of confidential technical information disclosed by the Client or the Design Engineer to Contractor.
Contractor represents that all technical and administrative employees of Contractor have signed secrecy agreement with Contractor which bind them to observe this secrecy agreement between the Client and Contractor. If in the performance of the work for Client it is necessary for the Client or the Design Engineer to disclose confidential technical information to third parties, Contractor will require such third parties to sign similar secrecy agreements.
17. INVOICING PROCEDURE AND SCHEDULE
According to the demands of the client
18. CONSTRUCTION TERMS and PENALTIES
Construction terms according to the demands of the client.
For a delay with respect to the agreed term, a penalty clause of not less than 2% per week of delay will be applied on the total sum of the order with a maximum of 10%.
The client may with old the amount of the penalties of any payment due or of the bankguarantee.
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Design engineer: SEGHERS ENGINEERING WATER NV
Address : Grote Baan 63 3150 WESPELAAR BELGIUM
Tel.No 00-32-16-60.82.11
Fax No 00-32-16-60.61.64
Responsible persons:
Mr. Johan DE ROUCK Project Engineer
Mr. Werner VAN HUNSEL Civil Engineer.

SEGHERS ENGINEERING WATER NV đ
CONSTRUCTION OF A UNITANKđ
WASTE WATER TREATMENT PLANT CIVIL WORKS
PRELIMINARY DESIGN
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A. PRELIMINARY DESIGN
A.I. PRESENTATION OF THE PROJECT
For the INDUSTRIAL ZONE of BIENHOA 2 a CENTRAL WASTE WATER TREAMENT (CWWTP) will be build, treating the waste water of the factories in this industial zone (about eighty factories).
Every factory will be equiped with its proper waste water pretreatment.
The waste water will then be collected and send to this CWWTP by SONADEZI. Before entering the waste water treatement, the flow of about 4 waste water streams will be measured and registred.
This document contains the DESIGN WORK for the construction of the Central Waste Water Treatment Plant of the Industrial Zone of BIENHOA 2.
This waste water treatment will exist of three major parts:
* Mechanical treatment (sieves)
* Fysico chemical treament (coagulation, floculation and sedimentation)
* Biological activated sludge waste water treament
The biological system, proposed by SEGHERS ENGINEERING WATER and choosen by SONADEZI (corporation for the development of BIENHOA Industrial Zone) and approved by the Vietnamese autorities, is the UNITANKđ - system.
The most striking advantage of this system is the very compact construction method. All basins are rectangular, which offers several benefits. Compared to the conventional round basins, the use of common walls is possible and less concrete is needed. The result is a compact, modular and space-saving design, realized in a tailor made installation.
Moreover, the UNITANK đ is synonym for advanced treatment, expressed by a stable and controlled process, high treatment efficiences and advanced equipment and instrumentation. This is made possible by an adaptive and intelligent process control and a simple and flexible operation.
In comparison with the conventional activated sludge system, there is no distinct sedimentation and less moving parts are needed.
These advantages are translated are translated in a reduced and operational cost.
Many years of research and the feed-back of several full scale plants resulted in a very attractive waste water treatment installation, with an exeptional all-in design, modular, compact and unobstrusive, providing top purification performance in the most efficient and cost-effective way.
The UNITANK đ - system proposed for the Project is the UNITANK đ single stage aerobic system, specially designed for this type of waste water, consisting of three square basins, where the waste waters flows alternatively in both directions.
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B. PROCESS ENGINEERING
B.I. DESIGN CHARACTERISTICS
(phase 1)
B.I.I. Influent characteristics of phase 1
The waste water of every factory in the INDUSTRIAL ZONE of BIENHOA 2 will be equiped with its proper waste water treatment.
The combination of these waste waters will result in the influent of the CWWTP (the Central Waste Water Treatment Plant) of BIENHOA 2.
The (maximum) characteristics of this influent waste water are:
Flowrate Average m3/d 4000
During days/week 7
Peak flow m3/h 670
BOD mg/l 500
COD mg/l 800
Suspended Solids mg/l 300
Animal and vegetable grease/fat/oil mg/l 15
Mineral oil/fat mg/l 0
Total Nitrogen mg/l 30
Ammonia mg/l 0.1
Total Phosphorus mg/l 4
Organic Phosphorus mg/l 0.2
Chlorides mg/l 5
pH min õ?" max 5-9
Temperature maximum °c 45
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Others (metals, aromatics...)
As mg/l 0.05
Cd mg/l 0.01
Pb mg/l 0.1
Cr mg/l 0.25
Cu mg/l 0.2
Zn mg/l 1
Mn mg/l 0.2
Ni mg/l 0.2
Fe mg/l 1
Sn mg/l 0.2
Hg mg/l 0.005
F mg/l 1
S mg/l 0.2
CN mg/l 0.05
Phenol mg/l 0.001
Tricloetylen mg/l 0.05
Tetracloetylen mg/l 0.02
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B.1.2. Design parameters
The waste water treatment will be dimensioned following the next (maximum values) parameters:
Flowrate
Average flow m3/d 4000
Peak flow m3/h 670
(For the dimensioning of the WWTP, the peakfiow is estimated to be 2h in the morning and 2h in the afternoon)
BOD load kg/day 2000
COD load kg/day 3200
BOD/COD > 0.625
Suspended Solids load kg/day 1200
Nitrogen load kg/day 120
Phosphorus load kg/day 16
pH range 5-9
Temperature
maximum °C 45
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B.1.3. Effluent quality
Guarantee (1)
BOD mg/l 20
COD mg/l 50
Suspended Solids mg/l 50
Grease/fat/oil. mg/l 5
Total nitrogen. mg/l 30
Total phosphorus. mg/l 4
(1): These figures are only guaranteed, when all influent characteristics correspond to the figures in B.I .1 and B.I .2 and after the execution of biodegradation tests
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Design engineer: SEGHERS ENGINEERING WATER NV
Address : Grote Baan 63 3150 WESPELAAR BELGIUM
Tel.No 00-32-16-60.82.11
Fax No 00-32-16-60.61.64
Responsible persons:
Mr. Johan DE ROUCK Project Engineer
Mr. Werner VAN HUNSEL Civil Engineer

Ảnh Vị trí Nhà Máy Xử lý Nước Thải (Waste Water Treatment Plants - WWTP) trong KCN Biên Hoà II, Đồng Nai, Việt Nam
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Quy trình công nghệ xử lý nước thải:
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Ảnh Bể thu gom nước thải
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The BIOscan-BIOmaster® system với INTELLIGENT PROCESS CONTROL của SEGHERS
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Ảnh BIOSCAN® phát hiện chất độc trong nước thải
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Màn hình điều khiển BIOSCAN®-BIOMASTER®
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Ảnh PLC S5-135U trung tâm của SIEMENS
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Ảnh PLC S7-200 điều khiển tay máy (dùng cào dầu) của SIEMENS
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Ảnh Nguồn điện dự phòng
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Ảnh Bể xử lý sinh học (UNITANK)
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Ảnh Hồ hoàn thiện
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Màn hình điều khiển công nghệ xử lý nước thải (Pretreatment)
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Màn hình điều khiển xử lý trung hoà (Physico)
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Màn hình điều khiển bể xử lý sinh học (Unitank)​

Màn hình điều khiển xử lý bùn (Sludge)
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Kiễm tra cảm biến
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Chạy thử thành công
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(Tiếp tục ...)​

Hình ảnh bên trong modul PLC xử lý chất độc có trong nước thải:
(PLC nầy hổ trợ cho PLC-S5-135U trung tâm)


UPS Trung tâm điều khiển:


Độ sâu UNITANK: (5m)


Máy chấp hành: Xử lý rác có trong nước thải:


PLC-S5-135U kết nối INTERNET, cho phép điều khiển, sửa chữa nhà máy từ xa trong chế độ điều khiển thông minh:


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TÀI LIỆU THAM KHẢO

ELECTRONICS ENGINEERS?T HANDBOOK - McGRAW HILL BOOK COMPANY (Bản tiếng Việt)












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