CN105858980A - CODcr wastewater treatment system and treatment method thereof - Google Patents
CODcr wastewater treatment system and treatment method thereof Download PDFInfo
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- CN105858980A CN105858980A CN201610490782.0A CN201610490782A CN105858980A CN 105858980 A CN105858980 A CN 105858980A CN 201610490782 A CN201610490782 A CN 201610490782A CN 105858980 A CN105858980 A CN 105858980A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a CODcr wastewater treatment system and a treatment method thereof and relates to the field of wastewater treatment. The system comprises a sampling dosing unit, a wastewater regulating unit, an electrical control unit, a filter unit and a control unit. The method comprises: adding a basic agent, a reducing agent, another basic agent, a vulcanizing agent, a deionizing agent, a coagulant aid and a fluctuating agent sequentially into a regulating tank in which wastewater is added, after each time of adding one reagent, carrying out guidance on redox potential or pH value testing, adding another reagent as long as requirements are met, and finally discharging treated wastewater. The system is fully automatic, high in treatment efficiency, and stable and reliable in wastewater discharge indexes. All reagents used herein are common low-cost agents that are harmless, and treatment cost is decreased by higher than 50%.
Description
Technical field
The present invention relates to field of waste liquid treatment, particularly relate to a kind of CODcr liquid waste treatment system and process side thereof
Method.
Background technology
The subsequent treatment of industrial wastes is that enterprise faces a great problem, and the practices well of existing enterprise is by waste liquid
The unit transferring to qualification after centralized collection focuses on, but due to the danger stored, processing cost
The reasons such as higher and waste liquid transport, Some Enterprises have selected the direct discharge of waste liquid, natural environment caused pole
Havoc.Therefore, continue a kind of system or device can reach to process industrial wastes used by each enterprise
Purpose.
Summary of the invention
It is an object of the invention to provide a kind of CODcr liquid waste treatment system and processing method thereof, thus solve existing
There is foregoing problems present in technology.
To achieve these goals, CODcr liquid waste treatment system of the present invention, described system includes that sample introduction adds
Prescription unit, waste liquid regulation unit, electrical control unit, filter element and control unit；Described sample introduction dosing
Unit includes: tap water inlet pipe, waste liquid inlet pipe, many group reagents device, waste drains pump and water intaking valve；Tap water
Inlet pipe is connected with water intaking valve import, and water intaking valve outlet connects with spray thrower in regulating reservoir；Waste liquid inlet pipe one end with
Waste liquid pool connects, and the other end connects with regulating reservoir；Many group reagents device all connects with regulating reservoir；Many group reagents
Device, waste drains pump, water intaking valve communicate to connect with control unit respectively；
Described waste liquid regulation unit includes: instrument display screen, elevator, liquid level sensor group, regulating reservoir, gas
Pump, stirring valve, ORP sensor and pH sensor；Liquid level sensor group is arranged in described regulating reservoir, institute
State ORP sensor and described pH sensor is arranged on the lever arm of described elevator and is arranged on described regulation
The top in pond, described ORP sensor and described pH sensor are connected with instrument display screen respectively；Described air pump
Being connected with described stirring valve, described stirring valve is connected with described regulating reservoir；Described instrument display screen, described liquid
Level sensor group communicates to connect with master control electric plates；
Described electrical control unit includes: power interface, communication interface, touch screen, on and off switch, acousto-optic report
Alert device, master control electric plates and liquid level sensor；Described power interface electrically connects with city；Connect by described communication
Mouthful, CODcr liquid waste treatment system and the connection of control centre；Described touch screen and described liquid level sensor are respectively
Communicating to connect with master control electric plates, described on and off switch, described audible-visual annunciator are connected with control unit respectively；
Described liquid level sensor is arranged on the reagent bottle location of described reagent device；
Described filter element includes: the exhaust-valve that sequentially connects, grade one filter, secondary filter, three grades of mistakes
Filter, floss hole, described exhaust-valve also connects with regulating reservoir, described grade one filter and described air pump it
Between pressure charging valve is set；
Many group reagents device includes 6 group reagent devices, specially alkali pump and alkali bottle group, reducing agent pump and reducing agent
Bottle group, flocculation aid pump and flocculation aid bottle group, vulcanizing agent pump and vulcanizing agent bottle group, deioniser pump and deionization
Agent bottle group, flocculant pump and flocculant bottle group；
Wherein, alkali pump, reducing agent pump, flocculation aid pump, vulcanizing agent pump, deioniser pump and flocculant pump (15)
It is connected with control unit respectively；
Vulcanizing agent pump, deionization pump, flocculant pump are the 24V peristaltic pump that rotating speed is fixing；Alkali pump, reducing agent pump,
Flocculation aid pump is the adjustable peristaltic pump of rotating speed.
Preferably, the material of described tap water inlet pipe is corrosion-resistant PTFE, and described water intaking valve is latus rectum 8mm
SMC 24V drive and long close electromagnetic valve.
Preferably, described waste liquid inlet pipe uses fluorine rubber-pipe, and described waste drains pump is peristaltic pump.
Preferably, described liquid level sensor group includes: high level sensor, working solution level sensor and low liquid level
Sensor；
Described high level sensor, described working solution level sensor and described low liquid level sensor are PP material
Floating ball sensor；
Described stirring valve is pinch valve, and the fairlead of described stirring valve is connected with regulating reservoir from bottom.
Preferably, described master control electric plates include AC D/C power, PLC, digital extended module,
Simulation expansion module, pump valve panel, signal isolator and air switch；The output of described air switch and institute
State PLC to control for electrical connection, described PLC, described digital extended module, described simulation
Sequence of modules connects；
The 24V of described AC-DC power supply direct current output extends with described digital extended module, described simulation respectively
Module, the DC supply input of described pump valve panel connect；Described signal isolator outfan is with described
Simulation expansion module analog input end mouth connects；The current output terminal of described simulation expansion module 1 and 2
Number with the current input terminal 1 of pump valve panel, No. 2 connect one to one；The numeral of digital extended module
Outfan 0 to 7 sequentially digital input end 1 to 8 with pump valve panel connects one to one.
Preferably, described exhaust-valve is heavy caliber pinch valve, by flexible pipe respectively with regulating reservoir and grade one filter
Connect.
Preferably, described filter element also includes atmos-valve, described atmos-valve respectively with pressure charging valve, single filter
Device connects；The built-in 300 mesh drainage screens of described grade one filter；The shell of described secondary filter is stainless steel
Matter, inside arranges 5um PP filtration of material core, and the shell of described tertiary filter is stainless steel, internal
PP filtration core, activated carbon and permeable membrane are set；The material of described floss hole is rustless steel, built-in fast interface.
Preferably, described CODcr liquid waste treatment system is shell structure, described instrument display screen, touch screen,
Power interface, communication interface, on and off switch, audible-visual annunciator, tap water inlet pipe import, waste liquid inlet pipe (4)
Import, finder outlet is arranged on the outer wall of described shell structure；
Wherein, described finder outlet is connected by overflow pipe with the overfall being arranged on described regulating reservoir.
The processing method of CODcr liquid waste treatment system of the present invention, the treating method comprises:
S1, being connected with waste liquid liquid storage tank by waste liquid inlet pipe, tap water inlet pipe is connected with running water pipe；
S2, startup run automatically, and described systems inspection warning message and equipment control information, as not having
Warning message and prompting management item, system enters handling process；
S3, unlatching water intaking valve, tap water enters regulating reservoir by spray head；
S4, low liquid level sensor set, close water intaking valve, and elevator will be located in the ORP sensing in regulating reservoir
Device and pH sensor propose regulating reservoir；
S5, startup waste drains pump, by waste liquid inlet pipe, be quantitatively adding waste liquid in regulating reservoir；
S6, closedown waste drains pump, open water intaking valve, working solution level sensor set；
S7, successively execution close water intaking valve, open stirring valve, booster air pump, startup alkali pump；
After S8, constant speed add alkaline agent 30s in regulating reservoir, drop elevator, ORP sensor is passed with PH
Sensor is placed under the liquid level of regulating reservoir；
In S9, employing PID approach regulation regulating reservoir, liquid pH value is to 2, closes alkali pump；
S10, startup reducing agent pump, in employing PID approach regulation regulating reservoir, the oxidation-reduction potential of liquid is extremely
250mv, closes reducing agent pump；
S11, it is sufficiently stirred in regulating reservoir after liquid 5min, restarts out alkali pump, use PID control method
The pH value of liquid is adjusted to 8.5, closes alkali pump；
S12, starting vulcanizing agent pump, add vulcanizing agent in liquid, vulcanizing agent pump duration of runs is 4min, so
After be sufficiently stirred for liquid 5min again；
S13, startup deioniser pump, add deioniser in liquid, and deioniser pump is the duration of runs
1min, is sufficiently stirred for liquid 5min the most again；
S14, startup flocculation aid pump, using PID mode to regulate the pH value of liquid in current regulating reservoir is 7-9；
S15, startup elevator, just ORP sensor and PH sensor take out from regulating reservoir；
S16, start flocculant pump, and ensure that flocculant pump duration of runs is 3min, be sufficiently stirred for the most again
10min；
S17, sequentially execution close air pump, valve is stirred in pass, open exhaust-valve, the operation of unlatching atmos-valve is carried out
Draining；
S18, judge low liquid level sensor state, and carry out draining timing, particularly as follows:
If the low liquid level sensor of A was triggered in 5 minutes, the most sequentially perform to close exhaust-valve, close greatly
Air valve, unlatching air pump, the operation of unlatching pressure charging valve, after draining 5min, sequentially perform to close air pump, closedown
The operation of pressure charging valve, completes this liquid waste processing；When the system-computed amount of disposing waste liquid, treatment effeciency and process
Between, and self-inspection maintenance information, the life cycle of each sensor in calculating system, and determine whether to report to the police
Information, if it is, check alert assembly and change, if it is not, then enter next time
Liquid waste processing；
If the low liquid level sensor of B is not triggered in 5 minutes, then enters and perform operation；
Described execution operation includes: sequentially perform to close exhaust-valve, open air pump, the operation of unlatching pressure charging valve,
After draining 5min, sequentially perform to close air pump, close pressure charging valve, the operation of unlatching exhaust-valve；
Repeat operation 3 times, in repeating operating process, if low liquid level sensor is triggered,
Then perform to close air pump, the operation of closedown pressure charging valve, complete a liquid waste processing；System-computed disposes waste liquid
Amount, treatment effeciency and process time, and self-inspection maintenance information, the week in life-span of each sensor in calculating system
Phase also sends inefficient information.
Preferably, in step s 5, be quantitatively adding in regulating reservoir the amount of liquid of waste liquid be 250mL or
500mL or 1000mL；After step 18B further comprising the steps of: when receiving inefficient prompting
After information, system enters holding state, after unlatching water intaking valve cleaning showers is popped one's head in 30 seconds, turns off water intaking valve,
Complete the maintenance to system.
The invention has the beneficial effects as follows:
The present invention uses " oxide reduction techniques ", " adsorption technology ", " multistage filtering ", " spray ", " gas agitating "
Technology such as " life-span managements ", it is achieved that the harmless treatment of chromium method COD waste liquid, solves chromium method COD and surveys
The problem that the secondary pollution of produced waste liquid measured by amount instrument.
System body low cost of the present invention, technical maturity, and processing procedure is without manual operation, have employed
The technology such as multistage filtering, cleaning showers, Gas Stirring and user oriented life-span management, by harmful in waste liquid
Material becomes solid state stability material from ionic state, and after multistage filtering, liquid qualified discharge, waste residue is concentrated and received
Collection has been handed qualification unit over to and has been processed.The waste residue volume formed and process front volume ratio are more than 1:2 0, just
In transport and storage.System range of the present invention is wide, can use with online coordinative composition of equipments, it is also possible to
It is applied to laboratory environment, can act also as the special equipment of hazardous waste disposal unit.
Accompanying drawing explanation
Fig. 1 is the side outer wall construction schematic diagram of CODcr liquid waste treatment system；
Fig. 2 is the opposite side outer wall construction schematic diagram of CODcr liquid waste treatment system；
Fig. 3 is the sectional view in Fig. 2 A-A direction；
Fig. 4 is the private side outer wall construction schematic diagram of CODcr liquid waste treatment system；
Fig. 5 is the sectional view in Fig. 4 B-B direction；
Fig. 6 is the software function schematic diagram of the installation of CODcr liquid waste treatment system；
Fig. 7 is the handling process schematic diagram of CODcr liquid waste treatment system.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, to this
Invention is further elaborated.Should be appreciated that detailed description of the invention described herein is only in order to solve
Release the present invention, be not intended to limit the present invention.
Embodiment
CODcr liquid waste treatment system described in the present embodiment, described system includes that sample introduction dosing unit, waste liquid regulate
Unit, electrical control unit, filter element and control unit；
Described sample introduction dosing unit includes: tap water inlet pipe 3, waste liquid inlet pipe 4, many group reagents device, waste drains pump
35 and water intaking valve 36；Tap water inlet pipe 3 is connected with water intaking valve 36 import, in water intaking valve 36 outlet and regulating reservoir 31
Spray thrower connects；Waste liquid inlet pipe 4 one end connects with waste liquid pool, and the other end connects with regulating reservoir 31；Many group reagents
Device all connects with regulating reservoir 31；Many group reagents device, waste drains pump 35, water intaking valve 36 respectively with control unit
Communication connection；
Described waste liquid regulation unit includes: instrument display screen 24, elevator 27, liquid level sensor group, regulating reservoir
31, air pump 39, stirring valve 40, ORP sensor 41 and pH sensor 42；Liquid level sensor group is arranged on institute
Stating in regulating reservoir 31, described ORP sensor 41 and described pH sensor 42 are arranged on the work of described elevator 27
On swing arm and be arranged on the top of described regulating reservoir 31, described ORP sensor 41 and described pH sensor 42 points
It is not connected with instrument display screen 24；Described air pump 39 is connected with stirring valve 40, described stirring valve 40 and described tune
Joint pond 31 connects；Instrument display screen 24, liquid level sensor communicate to connect with master control electric plates 25；
Described electrical control unit includes: power interface 1, communication interface 2, touch screen 7, on and off switch 8, sound
Light crossing-signal 9, master control electric plates 25 and liquid level sensor 16；Described power interface 1 electrically connects with city；Pass through
The connection of described communication interface 2, CODcr liquid waste treatment system and control centre；Described touch screen 7 and described liquid
Level sensor 16 communicates to connect with master control electric plates 25 respectively, on and off switch 8, audible-visual annunciator 9 respectively with control
Unit processed connects；Described liquid level sensor 16 is arranged on the reagent bottle location of described reagent device；
Described filter element includes: the exhaust-valve 32 that sequentially connects, grade one filter 33, secondary filter 17,
Tertiary filter 34, floss hole 6, described exhaust-valve 32 also connects with regulating reservoir 31, at described grade one filter
Pressure charging valve 38 is set between 33 and described air pump 39.
Being explained in more detail explanation is:
(1) sample introduction and dosing unit are responsible for the interpolation of the extraction of waste liquid, dilution and reagent treatment.
A, the material of described tap water inlet pipe are corrosion-resistant PTFE, and described water intaking valve 36 is latus rectum 8mm
SMC 24V drives length to close electromagnetic valve.
B, many group reagents device includes 19 groups of 6 group reagent devices, specially alkali pump 10 and alkali bottle, reducing agent pump 11
With reducer bottle 18 groups, flocculation aid pump 12 and 21 groups of flocculation aid bottle, vulcanizing agent pump 13 and 20 groups of vulcanizing agent bottle,
Deioniser pump 14 and 22 groups of deioniser bottle, flocculant pump 15 and 23 groups of flocculant bottle；Wherein, alkali pump 10,
Reducing agent pump 11, flocculation aid pump 12, vulcanizing agent pump 13, deioniser pump 14 and flocculant pump 15 respectively with control
Unit processed connects；The 24V peristaltic pump that vulcanizing agent pump 13, deionization pump 14, flocculant pump 15 are fixed for rotating speed；
Alkali pump 10, reducing agent pump 11, flocculation aid pump 12 are the adjustable peristaltic pump of rotating speed.Described alkali bottle 19 stores
Alkali liquor, stores reducing agent at described reducer bottle 18, stores flocculation aid at described flocculation aid bottle 21, described
Vulcanizing agent bottle 20 stores vulcanizing agent, stores deioniser at described deioniser bottle 22, at described flocculant bottle
23 storage flocculant.
C, waste liquid inlet pipe 4 use fluorine rubber-pipe, waste drains pump 35 to be peristaltic pump.Waste liquid inlet pipe 4 is complete with waste drains pump 35
The extraction of waste liquid in pairs.
(2) waste liquid regulation unit be responsible for waste liquid harmless treatment, waste liquid is mixed with reagent treatment
React, by sensor feedback liquid waste processing degree with abundant.
A, described liquid level sensor include: high level sensor 28, working solution level sensor 29 and low liquid level pass
Sensor 30, it is provided that corresponding liquid level judges signal；Described high level sensor 28, described work level sensing
Device 29 and described low liquid level sensor 30 are the floating ball sensor of PP material.
B, instrument display screen 24 are connected with ORP sensor 41, pH sensor 42, are responsible for the measurement of Testing index
With display, and drawn analogue signal to master control electric plates 25 by display screen 24.
C, elevator 27 are responsible for ORP sensor 41, pH sensor 42 with the insertion of liquid level in regulating reservoir 31 with de-
From.
D, described stirring valve 40 are pinch valve, and the fairlead of described stirring valve 40 is connected with regulating reservoir 31 from bottom；
The mixing stirring of waste liquid and reagent is responsible for by air pump 39 and stirring valve 40.Stirring valve 40 uses pinch valve, it is to avoid useless
Liquid is splashed into, and corrodes valve body.Stirring valve 40 fairlead is connected with regulating reservoir from bottom.
(3) electric control unit be responsible for system can the control of executive component, DATA REASONING, Dynamic Execution show,
The function such as man-machine interaction, warning.
Power interface 1 is the access port of system power supply.
Communication interface 2 is the connector of system and control centre.
Touch screen 7 is 10 cun of electric resistance touch screens, and dynamic display processing process can carry out man-machine interaction, with master
Control electric plates 25 is connected by netting twine.
On and off switch 8 is responsible for the supply of complete machine power supply.
Audible-visual annunciator 9 is responsible for during system alarm carrying out sound and light alarm.
Described master control electric plates 25 includes AC D/C power, PLC, digital extended module, simulation
Expansion module, pump valve panel, signal isolator and air switch；The output of described air switch and described PLC
Controller is for electrical connection, and described PLC, described digital extended module, described simulation control module are suitable
Sequence connects；
The 24V of described AC-DC power supply direct current output extends with described digital extended module, described simulation respectively
Module, the DC supply input of described pump valve panel connect；Described signal isolator outfan is with described
Simulation expansion module analog input end mouth connects；The current output terminal of described simulation expansion module 1 and 2
Number with the current input terminal 1 of pump valve panel, No. 2 connect one to one；The numeral of digital extended module
Outfan 0 to 7 sequentially digital input end 1 to 8 with pump valve panel connects one to one.Particularly as follows:
The current output terminal of described simulation expansion module 1 is connected with the current input terminal 1 of pump valve panel；
The current output terminal of described simulation expansion module 2 is connected with the current input terminal 2 of pump valve panel；
The digital output end 0,1,2,3,4,5,6,7 of digital extended module sequentially with the numeral of pump valve panel
Input 1,2,3,4,5,6,7,8 connects.
Liquid level sensor 16 is non-contact capacitive BL, is responsible for measuring reagent bottle liquid level signal,
Perform to provide basis for estimation for system.
(4) waste liquid that filter element is responsible for after processing carries out solid-liquid separation.Described filter element also includes air
Valve 37, described atmos-valve 37 is connected with pressure charging valve 38, grade one filter 33 respectively by flexible pipe；
Described exhaust-valve 32 is heavy caliber pinch valve, by flexible pipe respectively with regulating reservoir 31 and grade one filter 33
Connect.
Described grade one filter 33 shell uses rustless steel to form with PP materials processing, built-in 300 mesh drainage screens；
It is responsible for the solid matter after process is collected by filtration.
The shell of described secondary filter 17 is stainless steel, and inside arranges 5um PP filtration of material core, described
Grade one filter 33 is connected by standard hose with described secondary filter 17.
The shell of described tertiary filter 34 is stainless steel, and inside arranges PP filtration core, activated carbon and infiltration
Liquid after processing is filtered by film；Described secondary filter 17 is by standard hose and tertiary filter 34
Connect.
Described tertiary filter 34 is connected with floss hole 6 by flexible pipe.
The material of described floss hole 6 is rustless steel, built-in fast interface, and the water quality after process is discharged by pipeline.
(5) described CODcr liquid waste treatment system is shell structure, described instrument display screen 24, touch screen 7,
Power interface 1, communication interface 2, on and off switch 8, audible-visual annunciator 9, tap water inlet pipe 3 import, waste liquid enter
The import of pipe 4, finder outlet 5 are arranged on the outer wall of described shell structure；Wherein, described overflow pipe goes out
Mouth 5 is connected by overflow pipe with the overfall being arranged on described regulating reservoir 31.
The advantage of CODcr liquid waste treatment system described herein:
1, it is applicable to chromium method COD instrument and produces the process of waste liquid, processing procedure adds 6 kinds of reagent altogether,
Make the heavy metal ion in waste liquid form solid precipitation, and filtered by three grades of physical filtering devices, row
Except liquid meets discharge standard.
2, use the mechanical agitation that high efficiency Gas Stirring technical substitution is traditional, make chemical reaction more abundant.
3, reagent uses adjustable peristaltic pump to add, and PH and oxidation reduction potential control use PID regulation.
4, regulating reservoir uses politef material, and corrosion resistance is higher
5, using gas boosting technology in drainage procedure, drainage efficiency is higher.
6, sensor uses lifetime management, makes plant maintenance simple.
7, three-stage filtration, the first order filters built-in 300 mesh drainage screens, carries out solid matter collection, two grades of 5um
Filter, three grades of activated carbons and filter membrane, filtration residue material.
8, use automatic spray technology, extend the service life of sensor.
9, equipment self-inspection technology is added, such as liquid level emptying detection, processing procedure model after level detection, process
Change, reduce misoperation, effectively strengthen the reliability of equipment.
10, pressure charging valve, stirring valve, exhaust-valve use pinch valve, it is to avoid corrosive substance and valve body contact.
Of the present invention such as the processing method of described CODcr liquid waste treatment system, the treating method comprises:
S1, being connected with waste liquid liquid storage tank by waste liquid inlet pipe 4, tap water inlet pipe 3 is connected with running water pipe；
S2, startup automatic running program, described systems inspection warning message and equipment control information, as
Not having warning message and prompting management item, system enters handling process；
S3, unlatching water intaking valve 36, tap water enters regulating reservoir 31 by spray head；
S4, low liquid level sensor 30 set, close water intaking valve 36, and elevator 27 will be located in regulating reservoir 31
In ORP sensor 41 and pH sensor 42 regulating reservoir 31 is proposed；
S5, startup waste drains pump 35, by waste liquid inlet pipe 4, be quantitatively adding waste liquid in regulating reservoir 31；To tune
The amount of liquid being quantitatively adding waste liquid in joint pond 31 is 250mL or 500mL or 1000mL；
S6, closedown waste drains pump 35, open water intaking valve 36, working solution level sensor 29 set；
S7, successively execution close water intaking valve 36, open stirring valve 40, booster air pump 39, startup alkali pump 0；
After S8, constant speed add alkaline agent 30s in regulating reservoir 31, elevator drops, by ORP sensor 41 with
PH sensor 42 is placed under the liquid level of regulating reservoir 31；
In S9, employing PID approach regulation regulating reservoir 31, liquid pH value is to 2, closes alkali pump 10；
S10, startup reducing agent pump 11, use the oxidoreduction electricity of liquid in PID approach regulation regulating reservoir 31
Reducing agent pump 11, to 250mv, is closed in position；
S11, it is sufficiently stirred in regulating reservoir 31 after liquid 5min, restarts out alkali pump 10, use PID to adjust
The pH value of liquid is adjusted to 8.5 by joint method, closes alkali pump 10；
S12, starting vulcanizing agent pump 13, add vulcanizing agent in liquid, vulcanizing agent pump 13 duration of runs is 4min,
It is sufficiently stirred for liquid 5min the most again；
S13, startup deioniser pump 14, add deioniser, when deioniser pump 14 operates in liquid
Between be 1min, be sufficiently stirred for liquid 5min the most again；
S14, startup flocculation aid pump 12, use PID mode to regulate the pH value of liquid in current regulating reservoir 31
For 7-9；
S15, startup elevator 27, just ORP sensor 41 and PH sensor 42 are from regulating reservoir 31
Take out；
S16, start flocculant pump 15, and ensure that flocculant pump 15 duration of runs is 3min, the most abundant
Stirring 10min；
S17, sequentially execution close air pump 39, close stirring valve 40, unlatching exhaust-valve 32, unlatching atmos-valve 37
Operation carry out draining；
S18, judge low liquid level sensor 30 state, and carry out draining timing, particularly as follows:
If the low liquid level sensor of A 30 was triggered in 5 minutes, the most sequentially perform close exhaust-valve 32,
Close atmos-valve 37, open air pump 39, the operation of unlatching pressure charging valve 38, after draining 5min, sequentially perform
Close air pump 39, the operation of closedown pressure charging valve 38, complete this liquid waste processing；The system-computed amount of disposing waste liquid,
Treatment effeciency and the time of process, and self-inspection maintenance information, the life cycle of each sensor in calculating system,
And determine whether warning message, if it is, alert assembly is checked and changes, as
The most no, then enter liquid waste processing next time；
If the low liquid level sensor of B 30 is not triggered in 5 minutes, then enters and perform operation；
Described execution operation includes: sequentially perform to close exhaust-valve 32, open air pump 39, unlatching pressure charging valve 38
Operation, after draining 5min, sequentially perform close air pump 39, close pressure charging valve 38, open exhaust-valve 32
Operation；
Repeat operation 3 times, in repeating operating process, if low liquid level sensor 30 is triggered,
Then perform to close air pump 39, the operation of closedown pressure charging valve 38, complete a liquid waste processing；System-computed processes
Waste liquid amount, treatment effeciency and process time, and self-inspection maintenance information, the longevity of each sensor in calculating system
The life cycle also sends inefficient information.
After step 18B further comprising the steps of: after receiving inefficient information, system is entered
Enter holding state, after unlatching water intaking valve cleaning showers is popped one's head in 30 seconds, turn off water intaking valve, complete system
Safeguard.
Needing plant maintenance, system enters holding state；As low liquid level sensor 30 does not triggers, pass air pump 10,
Pressure charging valve 38, the system-computed amount of disposing waste liquid, efficiency, process the time and information is safeguarded in self-inspection, calculates and passes
Sensor life cycle, reports fault message, and system enters holding state.
Explanation to accompanying drawing 7:
1, after system enters and automatically runs, each sensor alarm information and equipment control information are detected, as
Normally enter the state of automatically processing.
2, enter clear water extremely low liquid level sensor 30 set, extract quantitative waste liquid to regulating reservoir 31.
3, clear water is entered to the set of middle working solution level sensor 29.
4, open stirring, add alkali liquor, make in regulating reservoir liquid pH value about 2.
5, reducing agent is added, by hexavalent chrome reduction in waste liquid to trivalent chromium, ORP sensor current potential display current potential
About 250.
6, add alkali liquor, make pH value control 8.5, precipitate the metal ions such as the chromium in waste liquid, silver, hydrargyrum.
7, add vulcanizing agent, remove mercury ion.
8, ion remaval agent, the heavy metal ion removed in liquid are added.
9, add flocculation aid, accelerate sedimentary generation and regulate pH value to 7-9.
10, add flocculant, make the precipitate rapid precipitation in liquid, form floccule body.
11, stirring is closed, the liquid after emission treatment, collect solid matter, process terminates.
By using technique scheme disclosed by the invention, obtain following beneficial effect:
Being applicable to chromium method COD instrument and produce the process of waste liquid, automatically, treatment effeciency is high, and discharging of waste liquid refers to
Mark stable, reliable.Used reagent is conventional low cost reagent, and non-hazardous, and processing cost reduces by 50%
Above.The solid matter volume formed after process is little, stable components, it is simple to transport.Software system management
Plant maintenance information also uses life-span management mode management of sensor, makes equipment life longer, uses safer
Reliably.Parameter adjustable, single treatment waste liquid amount is adjustable, is suitable to many applications.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications also should regard protection scope of the present invention.
Claims (10)
1. a CODcr liquid waste treatment system, it is characterised in that described system includes sample introduction dosing unit, waste liquid regulation unit, electrical control unit, filter element and control unit；
Described sample introduction dosing unit includes: tap water inlet pipe (3), waste liquid inlet pipe (4), many group reagents device, waste drains pump (35) and water intaking valve (36)；Tap water inlet pipe (3) is connected with water intaking valve (36) import, and water intaking valve (36) outlet connects with spray thrower in regulating reservoir (31)；Waste liquid inlet pipe (4) one end connects with waste liquid pool, and the other end connects with regulating reservoir (31)；Many group reagents device all connects with regulating reservoir (31)；Many group reagents device, waste drains pump (35), water intaking valve (36) communicate to connect with control unit respectively；
Described waste liquid regulation unit includes: instrument display screen (24), elevator (27), liquid level sensor group, regulating reservoir (31), air pump (39), stirring valve (40), ORP sensor (41) and pH sensor (42)；Liquid level sensor group is arranged in described regulating reservoir (31), described ORP sensor (41) and described pH sensor (42) are arranged on the lever arm of described elevator (27) and are arranged on the top of described regulating reservoir (31), and described ORP sensor (41) and described pH sensor (42) are connected with instrument display screen (24) respectively；Described air pump (39) is connected with described stirring valve (40), and described stirring valve (40) is connected with described regulating reservoir (31)；Described instrument display screen (24), described liquid level sensor group communicate to connect with master control electric plates (25)；
Described electrical control unit includes: power interface (1), communication interface (2), touch screen (7), on and off switch (8), audible-visual annunciator (9), master control electric plates (25) and liquid level sensor (16)；Described power interface (1) electrically connects with city；Connection by described communication interface (2), CODcr liquid waste treatment system and control centre；Described touch screen (7) and described liquid level sensor (16) communicate to connect with master control electric plates (25) respectively, and described on and off switch (8), described audible-visual annunciator (9) are connected with control unit respectively；Described liquid level sensor (16) is arranged on the reagent bottle location of described reagent device；
Described filter element includes: the exhaust-valve (32) that sequentially connects, grade one filter (33), secondary filter (17), tertiary filter (34), floss hole (6), described exhaust-valve (32) also connects with regulating reservoir (31), arranges pressure charging valve (38) between described grade one filter (33) and described air pump (39)；
Many group reagents device includes 6 group reagent devices, specially alkali pump (10) and alkali bottle (19) group, reducing agent pump (11) and reducer bottle (18) group, flocculation aid pump (12) and flocculation aid bottle (21) group, vulcanizing agent pump (13) and vulcanizing agent bottle (20) group, deioniser pump (14) and deioniser bottle (22) group, flocculant pump (15) and flocculant bottle (23) group；
Wherein, alkali pump (10), reducing agent pump (11), flocculation aid pump (12), vulcanizing agent pump (13), deioniser pump (14) and flocculant pump (15) are connected with control unit respectively；
Vulcanizing agent pump (13), deionization pump (14), flocculant pump (15) are the 24V peristaltic pump that rotating speed is fixing；Alkali pump (10), reducing agent pump (11), flocculation aid pump (12) are the adjustable peristaltic pump of rotating speed.
The most according to claim 1, CODcr liquid waste treatment system, it is characterised in that the material of described tap water inlet pipe is corrosion-resistant PTFE, described water intaking valve (36) is that the SMC 24V of latus rectum 8mm drives length to close electromagnetic valve.
CODcr liquid waste treatment system the most according to claim 1, it is characterised in that described waste liquid inlet pipe (4) uses fluorine rubber-pipe, and described waste drains pump (35) is peristaltic pump.
CODcr liquid waste treatment system the most according to claim 1, it is characterised in that described liquid level sensor group includes: high level sensor (28), working solution level sensor (29) and low liquid level sensor (30)；
Described high level sensor (28), described working solution level sensor (29) and described low liquid level sensor (30) are the floating ball sensor of PP material；
Described stirring valve (40) is pinch valve, and the fairlead of described stirring valve (40) is connected with regulating reservoir (31) from bottom.
CODcr liquid waste treatment system the most according to claim 1, it is characterized in that, described master control electric plates (25) includes AC D/C power, PLC, digital extended module, simulation expansion module, pump valve panel, signal isolator and air switch；The output of described air switch is with described PLC for electrically connecting, and described PLC, described digital extended module, described simulation control module are linked in sequence；
The 24V of described AC-DC power supply direct current output is connected with described digital extended module, described simulation expansion module, the DC supply input of described pump valve panel respectively；Described signal isolator outfan is connected with described simulation expansion module analog input end mouth；The current input terminal 1 of the current output terminal of described simulation expansion module No. 1 and No. 2 and pump valve panel, No. 2 connect one to one；The digital output end 0 to 7 of digital extended module sequentially digital input end 1 to 8 with pump valve panel connects one to one.
The most according to claim 1, CODcr liquid waste treatment system, it is characterised in that described exhaust-valve (32) is heavy caliber pinch valve, be connected with regulating reservoir (31) and grade one filter (33) respectively by flexible pipe.
CODcr liquid waste treatment system the most according to claim 1, it is characterized in that, described filter element also includes that atmos-valve (37), described atmos-valve (37) are connected with pressure charging valve (38), grade one filter (33) respectively；
The built-in 300 mesh drainage screens of described grade one filter (33)；
The shell of described secondary filter (17) is stainless steel, and inside arranges 5um PP filtration of material core,
The shell of described tertiary filter (34) is stainless steel, and inside arranges PP filtration core, activated carbon and permeable membrane；
The material of described floss hole (6) is rustless steel, built-in fast interface.
CODcr liquid waste treatment system the most according to claim 1, it is characterized in that, described CODcr liquid waste treatment system is shell structure, and described instrument display screen (24), touch screen (7), power interface (1), communication interface (2), on and off switch (8), audible-visual annunciator (9), tap water inlet pipe (3) import, the import of waste liquid inlet pipe (4), finder outlet (5) are arranged on the outer wall of described shell structure；
Wherein, described finder outlet (5) is connected by overflow pipe with the overfall being arranged on described regulating reservoir (31).
9. the processing method of CODcr liquid waste treatment system as described in any one of claim 1 to 8, it is characterised in that the treating method comprises:
S1, being connected with waste liquid liquid storage tank by waste liquid inlet pipe, tap water inlet pipe is connected with running water pipe；
S2, startup run automatically, described systems inspection warning message and equipment control information, and as not having warning message and prompting management item, system enters handling process；
S3, unlatching water intaking valve, tap water enters regulating reservoir by spray head；
S4, low liquid level sensor set, close water intaking valve, and elevator will be located in the ORP sensor in regulating reservoir and pH sensor proposes regulating reservoir；
S5, startup waste drains pump, by waste liquid inlet pipe, be quantitatively adding waste liquid in regulating reservoir；
S6, closedown waste drains pump, open water intaking valve, working solution level sensor set；
S7, successively execution close water intaking valve, open stirring valve, booster air pump, startup alkali pump；
After S8, constant speed add alkaline agent 30s in regulating reservoir, drop elevator, ORP sensor and PH sensor are placed under the liquid level of regulating reservoir；
In S9, employing PID approach regulation regulating reservoir, liquid pH value is to 2, closes alkali pump；
S10, startup reducing agent pump, use the oxidation-reduction potential of liquid in PID approach regulation regulating reservoir to 250mv, to close reducing agent pump；
S11, it is sufficiently stirred in regulating reservoir after liquid 5min, restarts out alkali pump, use PID control method that the pH value of liquid is adjusted to 8.5, close alkali pump；
S12, starting vulcanizing agent pump, add vulcanizing agent in liquid, vulcanizing agent pump duration of runs is 4min, is sufficiently stirred for liquid 5min the most again；
S13, starting deioniser pump, add deioniser in liquid, deioniser pump duration of runs is 1min, is sufficiently stirred for liquid 5min the most again；
S14, startup flocculation aid pump, using PID mode to regulate the pH value of liquid in current regulating reservoir is 7-9；
S15, startup elevator, just ORP sensor and PH sensor take out from regulating reservoir；
S16, start flocculant pump, and ensure that flocculant pump duration of runs is 3min, be sufficiently stirred for 10min the most again；
S17, sequentially execution close air pump, valve is stirred in pass, open exhaust-valve, the operation of unlatching atmos-valve carries out draining；
S18, judge low liquid level sensor state, and carry out draining timing, particularly as follows:
If the low liquid level sensor of A was triggered in 5 minutes, the most sequentially performs to close exhaust-valve, closedown atmos-valve, open air pump, the operation of unlatching pressure charging valve, after draining 5min, sequentially perform to close air pump, the operation of closedown pressure charging valve, complete this liquid waste processing；The system-computed amount of disposing waste liquid, treatment effeciency and process time, and self-inspection maintenance information, the life cycle of each sensor in calculating system, and determine whether warning message, if it is, alert assembly is checked and changes, if it is not, then enter liquid waste processing next time；
If the low liquid level sensor of B is not triggered in 5 minutes, then enters and perform operation；
Described execution operation includes: sequentially perform to close exhaust-valve, unlatching air pump, the operation of unlatching pressure charging valve, after draining 5min, sequentially performs to close air pump, close pressure charging valve, the operation of unlatching exhaust-valve；
Repeat operation 3 times, in repeating operating process, if low liquid level sensor is triggered, then performs to close air pump, the operation of closedown pressure charging valve, complete a liquid waste processing；The system-computed amount of disposing waste liquid, treatment effeciency and process time, and self-inspection safeguards information, the life cycle of each sensor send inefficient information in calculating system.
Method the most according to claim 9, it is characterised in that
In step s 5, the amount of liquid being quantitatively adding waste liquid in regulating reservoir is 250mL or 500mL or 1000mL；
After step 18B further comprising the steps of: after receiving inefficient information, system enters holding state, opens water intaking valve cleaning showers and pops one's head in after 30 seconds, turns off water intaking valve, complete the maintenance to system.
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