CN206553353U - A kind of system handled for high ammonia-nitrogen wastewater - Google Patents
A kind of system handled for high ammonia-nitrogen wastewater Download PDFInfo
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- CN206553353U CN206553353U CN201720183514.4U CN201720183514U CN206553353U CN 206553353 U CN206553353 U CN 206553353U CN 201720183514 U CN201720183514 U CN 201720183514U CN 206553353 U CN206553353 U CN 206553353U
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Abstract
The utility model is related to a kind of system handled for high ammonia-nitrogen wastewater, and the system is transformed in traditional A2O2 systems, provided with elevator pump, flow control valve, flowmeter and COD online analyzer and NH between regulating reservoir and biochemistry pool3N in-line analyzers, ORP in-line analyzers are provided with one section of anoxic pond and two sections of anoxic ponds, pH in-line analyzers and DO in-line analyzers are provided with one section of Aerobic Pond and two sections of Aerobic Ponds, the system also includes the controller for being used to control to adjust valve and phosphate, methanol, alkali lye and air mass flow, controller and COD online analyzer, NH3N in-line analyzers, ORP in-line analyzer pH in-line analyzers and the connection of DO in-line analyzers.Compared with prior art, the perfect method of A2O2 process stabilizing energy-efficient treatment high ammonia-nitrogen wastewaters of the utility model, makes sewage-treatment plant stable, reduces operating cost, there is very high promotional value.
Description
Technical field
The utility model is related to technical field of waste water processing, and in particular to a kind of system handled for high ammonia-nitrogen wastewater.
Background technology
Coal is the main fossil energy of China, is also the primary raw material of many important chemicals, as social economy holds
Also there is higher growth rate in continuous high speed development, the China in Recent Years energy, the demand of chemicals, coal chemical industry Chinese energy,
Critical role is occupied in chemical field.
Coal chemical industry can produce a large amount of waste water, predominantly gasification installation waste discharge in process of production, and ammonia nitrogen is 400
~450mg/L or so, COD are in 1000~1500mg/L or so, pH8.0~8.5, meta-alkalescence；Typical high NH3- N, low COD give up
Water, increasingly serious with body eutrophication phenomenon in recent years, the processing to this high ammonia-nitrogen wastewater also seems more and more heavier
Will.
Current A2O2 methods are used for the wastewater treatment of some coal plants, i.e., biochemical treatment system is divided into two series,
Each series is two sections of AO (anoxic, aerobic) system, while flowed back in being designed in one section of AO system, it is anti-by nitrification, denitrification
It is N that mineralized nitrogen, which should be made,2, denitrogenation truly is realized, its reaction process is pulling flow type.But these wastewater treatment equipments are general
Store-through is in problems with：
(1) upstream inflow and influent quality are unstable, and effluent quality is unstable；
(2) Aerobic Pond dissolved oxygen is higher in design and running, nitrate nitrogen, nitrite nitrogen exist very simultaneously in Aerobic Pond
To based on nitrate nitrogen, illustrate in Aerobic Pond to cause system mainly to there occurs whole process because blower fan wind supply quantity is big, dissolved oxygen is higher
Nitration reaction only there occurs part short distance nitration reaction；
(3) arbitrarily, system O1 ponds often occurs and O2 ponds basicity is unstable, A1 ponds for the dosage such as methanol, alkali lye, phosphate
And A2 ponds ORP value it is unreasonable situations such as.
How to solve the above problems, make A2O2 system stable effluent qualities, short distance nitration reaction, energy-conservation fortune occur for Aerobic Pond
OK, methanol, alkali lye, microcosmic salt etc. and are accurately added, stabilizing energy-saving operation truly is realized, has been a urgent need to resolve
The problem of.
Utility model content
The purpose of this utility model is exactly the defect in order to overcome above-mentioned prior art presence and provides a kind of operation more
Become more meticulous, operating cost is low is used for the system that high ammonia-nitrogen wastewater is handled.
The purpose of this utility model can be achieved through the following technical solutions：It is a kind of to be for what high ammonia-nitrogen wastewater was handled
System, the system includes collecting-tank, regulating reservoir, biochemistry pool and the second pond being sequentially connected, and the biochemistry pool includes being sequentially connected
One section of anoxic pond, one section of Aerobic Pond, two sections of anoxic ponds and two sections of Aerobic Ponds, between one section of Aerobic Pond and one section of anoxic pond
Interior backflow, the import connection phosphate holding vessel of one section of anoxic pond, one section of anoxic pond and two sections of anoxics are formed by pipeline
The entrance connection methanol tank in pond, one section of Aerobic Pond and two sections of Aerobic Ponds connect alkali liquor storage tank and air, the regulation
Elevator pump, flow control valve, flowmeter and COD online analyzer and NH are provided between pond and biochemistry pool3- N in-line analyzers,
It is provided with one section of anoxic pond and two sections of anoxic ponds in ORP in-line analyzers, one section of Aerobic Pond and two sections of Aerobic Ponds and is provided with pH
In-line analyzer and DO in-line analyzers, the system also include being used for controlling to adjust valve and phosphate, methanol, alkali lye and
The controller of air mass flow, the controller and COD online analyzer, NH3- N in-line analyzers, ORP in-line analyzers pH exist
Line analysis instrument and the connection of DO in-line analyzers.
Regulation tankage is designed according to plant area's discharge of wastewater rule, and ensures that the residence time is not less than 24h, to reach
The purpose of abundant quenched tune amount；Elevator pump, flowmeter, regulating valve are set reconciling pond outlet, for controlling to enter biochemical system
Inflow, influent load, such as by inflow, influent load control between the 80~120% of Design cooling load, such as flowmeter prison
Measurement of discharge not in this range, is then controlled the aperture of regulating valve in each pipeline by controller, controlled in scope of design.
The method is the key of the system stable operation, to prevent the unexpected impact of upper water matter, water from causing biochemical system water outlet not
It is stable even to paralyse.
DO in-line analyzers are set in one section of Aerobic Pond and two sections of Aerobic Ponds, entered by DO value interlocked control air lines
Mouth regulating valve, the DO in one section of Aerobic Pond and two sections of Aerobic Ponds is controlled between 0.5~2mg/l, makes one section of Aerobic Pond and two
Section Aerobic Pond nitrification mainly generates NO2- N (nitrite nitrogen), that is, occur short distance nitration reaction, the oxygen demand of short distance nitration reaction
The oxygen demand few 25% or so reacted than complete nitrification, methanol demands amount few 40% or so, has sufficiently achieved the effect of energy-conservation.
PH value in-line analyzer is set in one section of Aerobic Pond and two sections of Aerobic Ponds, passes through pH value, influent ammonia nitrogen, inflow interlocked control alkali
Liquid pipe line inlet adjusting valve, by the pH stable in one section of Aerobic Pond and two sections of Aerobic Ponds between 7.5~8, forms short distance nitre
Change the condition of reaction, reach the effect of stabilizing energy-saving.
ORP (oxidation-reduction potential) in-line analyzer is set in one section of anoxic pond and two sections of anoxic ponds, makes system oxidation also
Former current potential is stable between -300mv~-100mv, reaches the anti-nitration reaction of one section of anoxic pond of stable operation and two sections of anoxic ponds
Effect.
Described regulating reservoir can connect multiple biochemistry pools, and each biochemistry pool includes one section of anoxic pond, one being sequentially connected
Section Aerobic Pond, two sections of anoxic ponds and two sections of Aerobic Ponds, form interior between one section of Aerobic Pond and one section of anoxic pond by pipeline
Backflow.
Described regulating reservoir connects two biochemistry pools.
Described one section of Aerobic Pond and two sections of Aerobic Ponds is connected in air, the roots blower provided with change by roots blower
Frequency motor, the variable-frequency motor connects controller.
Described system includes monitoring pool and sludge-tank, and the monitoring pool is connected by effluent weir with second pond, while dirty
Mud sump is connected by sludge canal with second pond.
Described controller is PLC.Pass through COD online analyzer, NH3- N in-line analyzers, ORP on-line analyses
The feedback of the information of instrument pH in-line analyzers and DO in-line analyzers, PLC can accurately calculate the inlet amount of each raw material,
So as to control the aperture of each pipeline regulating valve, the purpose accurately fed intake, one side enhanced sewage treatment effect, another aspect are reached
Each raw material is saved, and plays the effect of energy-conservation.
Compared with prior art, the beneficial effects of the utility model are embodied in following several respects：
(1) by lifting system, regulating system, robot control system(RCS) etc., accurately control enters the inflow of system and water inlet is born
Lotus, in case system is reached the effect of system stable operation by the unstable impact of upstream water quality, water；
(2) control one section of Aerobic Pond and two sections of Aerobic Pond DO between 0.5~2mg/l by system, pH value is 7.5~8
Between, the condition of short distance nitration is created, the effect of energy-conservation is reached；
(3) methanol, alkali lye, amount of phosphate for needing to add are controlled by system, system is accurately run, reaches stable section
The effect of energy.
Brief description of the drawings
Fig. 1 is connection diagram of the present utility model.
Wherein, 1 is collecting-tank, and 2 be regulating reservoir, and 3 be elevator pump, and 4 be flow control valve, and 5 be flowmeter, and 6 be that COD is online
Analyzer, 7 be NH3- N in-line analyzers, 8 be one section of anoxic pond, and 9 be one section of Aerobic Pond, and 10 be two sections of anoxic ponds, and 11 be two sections
Aerobic Pond, 12 be ORP in-line analyzers, and 13 be pH in-line analyzers, and 14 be DO in-line analyzers, and 15 be second pond, and 16 be prison
Pond is surveyed, 17 be phosphate storage tank, and 18 be phosphate flow control valve, and 19 be phosphate flowmeter, and 20 be methanol tank, and 21 be first
Alcohol flow control valve, 22 be methanol flow meter, and 23 be alkali liquor storage tank, and 24 be flux of alkaline liquor regulating valve, and 25 be alkaline stream gauge, 26
It is variable-frequency motor for roots blower, 27,28 be air flow rate adjustment valve, and 29 be clear water.
Embodiment
Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model before
Put and implemented, give detailed embodiment and specific operating process, but protection domain of the present utility model is not limited
In following embodiments.
Embodiment 1
A kind of system handled for high ammonia-nitrogen wastewater, its structure are as shown in figure 1, system includes the collecting-tank being sequentially connected
1st, regulating reservoir 2, biochemistry pool and second pond 15, one section of anoxic pond 8 that biochemistry pool includes being sequentially connected, one section of Aerobic Pond 9, two sections lack
Oxygen pond 10 and two sections of Aerobic Ponds 11, interior backflow, one section of anoxic are formed between one section of Aerobic Pond 9 and one section of anoxic pond 8 by pipeline
The import connection phosphate holding vessel 17 in pond 8, and setting phosphate flow control valve 18 and phosphate flowmeter 19 on pipeline；
One section of anoxic pond 8 connects methanol tank 20, and the setting methanol flow regulating valve on the pipeline with the entrance of two sections of anoxic ponds 10
21 and methanol flow meter 22；One section of Aerobic Pond 9 connects alkali liquor storage tank 23 with two sections of Aerobic Ponds 11, and sets alkali lye on the pipeline
Flow control valve 24 and alkaline stream gauge 25, one section of Aerobic Pond 9 and two sections of Aerobic Ponds 11 connect air by roots blower 26,
Air flow rate adjustment valve 28, and the installation frequency modulation motor 27 in roots blower 26 are provided with the pipeline.Regulating reservoir 2 and biochemistry pool it
Between provided with elevator pump 3, flow control valve 4, flowmeter 5 and COD online analyzer 6 and NH3- N in-line analyzers 7, one section lacks
It is provided with ORP in-line analyzers 12, one section of Aerobic Pond 9 and two sections of Aerobic Ponds 11 and exists provided with pH in oxygen pond 8 and two sections of anoxic ponds 10
Line analysis instrument 13 and DO in-line analyzers 14, system also include PLC, the PLC and COD online analyzer 6,
NH3- N in-line analyzers 7, ORP in-line analyzers 12, pH in-line analyzers 13 and DO in-line analyzers connection 14.The system
Monitoring pool 16 and sludge-tank are additionally provided with, monitoring pool 16 is connected by effluent weir with second pond 15, and obtain clear in monitoring pool 16
Water 29, while sludge-tank is connected by sludge canal with second pond 15, and obtains in sludge-tank sludge.
Water quality in collecting-tank 1 is 800~1500mg/L of COD, 200~400mg/L of ammonia nitrogen, pH8.0~8.5.Pass through
PLC regulation enters the flow of biochemical system, makes ammonia nitrogen load control in 0.05kgNH3Within-N/KgMLSS.d.
Biochemistry pool in the present embodiment includes two groups, passes through PLC and flow of inlet water, influent ammonia nitrogen, influent COD etc.
The rotating speed of state modulator roots blower variable-frequency motor 24, to reach the purpose of regulation wind supply quantity, makes air demand control exist
3.43kgO2/kgNH3- N or so, it is the oxygen-supplying amount of short distance nitration reaction requirement；Control one section of Aerobic Pond 9 and two sections of Aerobic Ponds
DO in 11 is between 0.5~2mg/L, and pH is between 7.5~8, and temperature control makes in the two ponds between 20~40 DEG C
It is main to occur short distance nitration reaction.The ORP of one section of anoxic pond 8 and two sections of anoxic ponds 10 is controlled between -300mv~-100mv,
DO is controlled in below 0.5mg/l, and pH is between 6.5~7.5, and temperature control makes anti-nitration reaction smoothly enter between 5~40 DEG C
OK.The interior capacity of returns that one section of Aerobic Pond is back to one section of anoxic pond is controlled 4 or so, is smoothed out anti-nitration reaction.
By the parameter such as PLC system and inflow, influent ammonia nitrogen, influent COD, on-line tuning methanol flow regulating valve 21,
Flux of alkaline liquor regulating valve 24, the aperture of phosphate flow control valve 18, and then its dosage is controlled, the control of methanol dosage exists
1.14kg methanol/kgNH3- N or so；The demand of alkali lye is controlled in 3.57kg basicity/kgNH3- N or so, cuts in raw wastewater
It is the basicity that system needs to add after basicity；Phosphate dosage presses BOD5：N：P is 100:5:1 calculates, and controls above-mentioned substance
Dosage in the reasonable scope, make energy saving of system stable operation.
Biochemistry pool water outlet enters second pond 15, and second pond 15 is mainly used in separation of solid and liquid, and exists provided with pump suction type suction dredge
Inhale mud, a part of sludge reflux to biochemical system in the bottom of second pond 15；Another part sludge is directly entered by residual sludge pump
Centrifugal dehydrator is dehydrated.
The gravity flow of the supernatant of second pond 15 enters monitoring pool 16, handles the reuse of clear water 29 up to standard.
Effluent quality after above-mentioned coal chemical industry high ammonia-nitrogen sewage treatment system is：COD≤60mg/L, ammonia nitrogen≤
15mg/L。
Claims (6)
1. a kind of system handled for high ammonia-nitrogen wastewater, the system includes collecting-tank, regulating reservoir, the biochemistry pool being sequentially connected
And second pond, the biochemistry pool include be sequentially connected one section of anoxic pond, one section of Aerobic Pond, two sections of anoxic ponds and two sections it is aerobic
Pond, interior backflow, the import connection of one section of anoxic pond are formed between one section of Aerobic Pond and one section of anoxic pond by pipeline
Phosphate holding vessel, one section of anoxic pond connects methanol tank with the entrance of two sections of anoxic ponds, one section of Aerobic Pond and two sections it is good
Oxygen pond connects alkali liquor storage tank and air, it is characterised in that elevator pump, Flow-rate adjustment are provided between the regulating reservoir and biochemistry pool
Valve, flowmeter and COD online analyzer and NH3It is provided with-N in-line analyzers, one section of anoxic pond and two sections of anoxic ponds
PH in-line analyzers and DO in-line analyzers, the system are provided with ORP in-line analyzers, one section of Aerobic Pond and two sections of Aerobic Ponds
System also includes the controller for being used to control to adjust valve and phosphate, methanol, alkali lye and air mass flow, the controller and COD
In-line analyzer, NH3- N in-line analyzers, ORP in-line analyzers, pH in-line analyzers and the connection of DO in-line analyzers.
2. a kind of system handled for high ammonia-nitrogen wastewater according to claim 1, it is characterised in that described regulating reservoir
Can connect multiple biochemistry pools, one section of anoxic pond that each biochemistry pool includes being sequentially connected, one section of Aerobic Pond, two sections of anoxic ponds and
Two sections of Aerobic Ponds, interior backflow is formed between one section of Aerobic Pond and one section of anoxic pond by pipeline.
3. a kind of system handled for high ammonia-nitrogen wastewater according to claim 2, it is characterised in that described regulating reservoir
Connect two biochemistry pools.
4. a kind of system handled for high ammonia-nitrogen wastewater according to claim 1, it is characterised in that described one section is good
Oxygen pond and two sections of Aerobic Ponds are connected by roots blower is provided with variable-frequency motor, the variable-frequency motor in air, the roots blower
Connect controller.
5. a kind of system handled for high ammonia-nitrogen wastewater according to claim 1, it is characterised in that described system bag
Monitoring pool and sludge-tank are included, the monitoring pool is connected by effluent weir with second pond, while sludge-tank is heavy by sludge canal and two
Pond is connected.
6. according to a kind of any described system handled for high ammonia-nitrogen wastewater of Claims 1 to 5, it is characterised in that described
Controller be PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720183514.4U CN206553353U (en) | 2017-02-28 | 2017-02-28 | A kind of system handled for high ammonia-nitrogen wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720183514.4U CN206553353U (en) | 2017-02-28 | 2017-02-28 | A kind of system handled for high ammonia-nitrogen wastewater |
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| CN206553353U true CN206553353U (en) | 2017-10-13 |
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| CN201720183514.4U Active CN206553353U (en) | 2017-02-28 | 2017-02-28 | A kind of system handled for high ammonia-nitrogen wastewater |
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