CN104291429B - Nitro-cotton waste acid water and lime slurry neutralization treatment unit - Google Patents
Nitro-cotton waste acid water and lime slurry neutralization treatment unit Download PDFInfo
- Publication number
- CN104291429B CN104291429B CN201410604411.1A CN201410604411A CN104291429B CN 104291429 B CN104291429 B CN 104291429B CN 201410604411 A CN201410604411 A CN 201410604411A CN 104291429 B CN104291429 B CN 104291429B
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- CN
- China
- Prior art keywords
- lime
- milk
- pipeline
- sour water
- reaction pond
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses a kind of nitro-cotton waste acid water and lime slurry neutralization treatment unit, relate to field of waste water treatment, provide a kind of can stability contorting waste acid water and lime slurry neutralization pH value reduce nitro-cotton waste acid water and the lime slurry neutralization treatment unit of milk of lime failsafe valve rate.The present invention includes neutralization reaction pond, milk of lime holding tank, milk of lime pipeline, sour water pipeline, controller, milk of lime return line and neutralization reaction pond pH value sensor; Sour water pipeline is connected with neutralization reaction pond, sour water pipeline is provided with sour water pump; Milk of lime pipeline two ends are connected with milk of lime holding tank and neutralization reaction pond respectively, milk of lime pipeline is disposed with the milk of lime valve that milk of lime pump, Y-junction and aperture are fixing, milk of lime return line two ends connect milk of lime holding tank and Y-junction respectively; Controller is according to the signal control sour water revolution speed of pH value sensor.The present invention may be used for during the design of nitro-cotton waste acid water and lime slurry neutralization treatment unit and existing apparatus transform.
Description
Technical field
The present invention relates to field of waste water treatment, particularly relate to a kind of nitro-cotton waste acid water and lime slurry neutralization treatment unit.
Background technology
Prior art nitro-cotton waste acid water (sulfur acid, nitric acid) and lime slurry neutralization method of pH control are: the sour water process water yield is substantially constant, by changing the dosage of milk of lime and adding concentration inclined screw and add grey number of seconds and carry out pH regulator, chute got to by the emulsion pump of milk of lime storage tank, below chute, motorized valve is installed, motorized valve relies on Long-distance Control open degree adjust flux, and unnecessary emulsion returns storage tank.Problems existing is that milk of lime flow is difficult to accurate control, pH value cannot stability contorting within the scope of processing requirement, motorized valve will frequently regulate, and the fouling of lime transport pipe is serious in addition, causes motorized valve failure rate high.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of can stability contorting nitro-cotton waste acid water and lime slurry neutralization pH value reduce nitro-cotton waste acid water and the lime slurry neutralization treatment unit of milk of lime failsafe valve rate.
For the technical scheme solving the problems of the technologies described above employing is: nitro-cotton waste acid water and lime slurry neutralization treatment unit comprise neutralization reaction pond, milk of lime holding tank, milk of lime pipeline and sour water pipeline; Sour water pipeline is connected with neutralization reaction pond, sour water pipeline is provided with sour water pump; Milk of lime pipeline two ends are connected with milk of lime holding tank and neutralization reaction pond respectively, and milk of lime pipeline is provided with milk of lime pump; Nitro-cotton waste acid water and lime slurry neutralization treatment unit also comprise controller, milk of lime return line and the first pH sensor for measuring mixture ph in neutralization reaction pond; Controller is according to the signal control sour water revolution speed of the first pH sensor; Milk of lime pipeline between milk of lime pump to neutralization reaction pond is disposed with Y-junction and milk of lime valve, milk of lime valve opening is fixed, and milk of lime return line two ends connect milk of lime holding tank and Y-junction respectively.
Further: nitro-cotton waste acid water and lime slurry neutralization treatment unit comprise the second pH sensor for measuring mixture ph in neutralization reaction pond.
Further: controller comprises PLC and frequency transformer, the program of PLC goes out sour water revolution speed according to pH sensor calculated signals thus controls frequency transformer to export, Frequency Converter Control sour water revolution speed.
The invention has the beneficial effects as follows: control sour water flows per unit time to control nitro-cotton waste acid water and lime slurry neutralization pH value by regulating sour water revolution speed, milk of lime valve opening is fixed, need not regulate, reduce milk of lime failsafe valve rate, enable whole device smooth running, improve wastewater treatment capacity and productivity.
Sour water revolution speed is regulated automatically to control, make nitro-cotton waste acid water and lime slurry neutralization pH value realize automatically regulating, greatly alleviate the difficulty of regulating and controlling, pH value reaches stable, controls accurately, for subsequent biochemical process provides favourable condition, consumption and the overhaul of the equipments rate of lime can be reduced simultaneously.
Accompanying drawing explanation
Fig. 1 is nitro-cotton waste acid water and lime slurry neutralization treatment unit structural representation;
Be labeled as in figure: sour water pump 1, milk of lime holding tank 2, sour water pipeline 3, milk of lime pump 4, neutralization reaction pond 5, first pH sensor 6, milk of lime valve 7, Y-junction 8, milk of lime return line 9, milk of lime pipeline 10, PLC11, controller 12, frequency transformer 13, second pH sensor 14.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, nitro-cotton waste acid water and lime slurry neutralization treatment unit comprise neutralization reaction pond 5, milk of lime holding tank 2, milk of lime pipeline 10 and sour water pipeline 3; Sour water pipeline 3 is connected with neutralization reaction pond 5, sour water pipeline 3 is provided with sour water pump 1; Milk of lime pipeline 10 two ends are connected with milk of lime holding tank 2 and neutralization reaction pond 5 respectively, milk of lime pipeline 10 are provided with milk of lime pump 4; Nitro-cotton waste acid water and lime slurry neutralization treatment unit also comprise controller 12, milk of lime return line 9 and the first pH sensor 6 for measuring mixture ph in neutralization reaction pond 5; Controller 12 is according to signal control sour water pump 1 rotating speed of the first pH sensor 6; Milk of lime pipeline 10 between milk of lime pump 4 to neutralization reaction pond 5 is disposed with Y-junction 8 and milk of lime valve 7, milk of lime valve 7 aperture is fixed, and milk of lime return line 9 two ends connect milk of lime holding tank 2 and Y-junction 8 respectively.
Milk of lime in milk of lime holding tank 2 enters neutralization reaction pond 5 by milk of lime pipeline 10, milk of lime valve 7 aperture is fixed, the unnecessary milk of lime pump 4 that milk of lime pump 4 exports returns milk of lime holding tank 2 by milk of lime return line 9, and the milk of lime amount entering neutralization reaction pond 5 in the unit time is constant.Controller 12, according to signal control sour water pump 1 rotating speed of the first pH sensor 6, controls sour water flows per unit time by regulating sour water pump 1 rotating speed and controls nitro-cotton waste acid water and lime slurry neutralization pH value.Regulate sour water processing speed can realize by regulating lime milk concentration.Lime milk concentration can realize by regulating white lime holding tank sodalime add-on.
The concrete control mode of controller 12 is: control bound (as 2.5-2.7) according to processing requirement setting pH value.When pH sensor 6 measured value is lower than pH value lower control limit, sour water pump 1 rotating speed progressively reduces, and pH value progressively raises.When pH sensor 6 measured value is in pH value span of control, sour water pump 1 rotating speed is constant.When pH sensor 6 measured value is higher than pH value upper control limit, sour water pump 1 rotating speed progressively increases, and pH value progressively reduces.
Sour water pipeline 3 and milk of lime pipeline 10 are preferably connected to the one end in neutralization reaction pond 5, and the first pH sensor 6 is also arranged at this end.Second pH sensor 14 can be set at neutralization reaction pond 5 the other end, second pH sensor 14 is not connected with controller 12, second pH sensor 14 sour water and milk of lime primitive reaction complete time (reacting about 20 minutes) measure pH value, for observing control effects, pH value controls bound and can adjust according to whether the measured value of the second pH sensor 14 is suitable.
The concrete set-up mode of controller 12 can be as follows: the program that controller 12 comprises PLC11 and frequency transformer 13, PLC11 goes out sour water pump 1 rotating speed according to the first pH sensor 6 calculated signals thus control frequency transformer 13 to export, and frequency transformer 13 controls sour water pump 1 rotating speed.
Claims (3)
1. nitro-cotton waste acid water and lime slurry neutralization treatment unit, comprises neutralization reaction pond (5), milk of lime holding tank (2), milk of lime pipeline (10) and sour water pipeline (3); Sour water pipeline (3) is connected with neutralization reaction pond (5), sour water pipeline (3) is provided with sour water pump (1); Milk of lime pipeline (10) two ends are connected with milk of lime holding tank (2) and neutralization reaction pond (5) respectively, milk of lime pipeline (10) are provided with milk of lime pump (4); It is characterized in that: comprise controller (12), milk of lime return line (9) and the first pH sensor (6) for measuring neutralization reaction pond (5) interior mixture ph; Controller (12) is electrically connected with the first pH sensor (6) and sour water pump (1), and controller (12) is according to signal control sour water pump (1) rotating speed of the first pH sensor (6); Milk of lime pipeline (10) between milk of lime pump (4) to neutralization reaction pond (5) is disposed with Y-junction (8) and milk of lime valve (7), milk of lime valve (7) aperture is fixed, and milk of lime return line (9) two ends connect milk of lime holding tank (2) and Y-junction (8) respectively.
2. nitro-cotton waste acid water according to claim 1 and lime slurry neutralization treatment unit, is characterized in that: comprise the second pH sensor (14) for measuring neutralization reaction pond (5) interior mixture ph.
3. nitro-cotton waste acid water according to claim 1 and lime slurry neutralization treatment unit, it is characterized in that: controller (12) comprises PLC (11) and frequency transformer (13), the program of PLC (11) goes out sour water pump (1) rotating speed according to the first pH sensor (6) calculated signals thus controls frequency transformer (13) to export, and frequency transformer (13) controls sour water pump (1) rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410604411.1A CN104291429B (en) | 2014-10-31 | 2014-10-31 | Nitro-cotton waste acid water and lime slurry neutralization treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410604411.1A CN104291429B (en) | 2014-10-31 | 2014-10-31 | Nitro-cotton waste acid water and lime slurry neutralization treatment unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104291429A CN104291429A (en) | 2015-01-21 |
| CN104291429B true CN104291429B (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410604411.1A Expired - Fee Related CN104291429B (en) | 2014-10-31 | 2014-10-31 | Nitro-cotton waste acid water and lime slurry neutralization treatment unit |
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| Country | Link |
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| CN (1) | CN104291429B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036416B (en) * | 2015-08-01 | 2018-04-20 | 合肥铜冠国轩铜材有限公司 | A kind of lime node reflux heavy metal waste water treatment system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101714A (en) * | 2010-12-16 | 2011-06-22 | 北京中兵北方环境科技发展有限责任公司 | Device and method for quantitatively charging lime automatically |
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2014
- 2014-10-31 CN CN201410604411.1A patent/CN104291429B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101714A (en) * | 2010-12-16 | 2011-06-22 | 北京中兵北方环境科技发展有限责任公司 | Device and method for quantitatively charging lime automatically |
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| Publication number | Publication date |
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| CN104291429A (en) | 2015-01-21 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20171031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |