CN208949051U - A kind of plasma coagulation integrated effluent disposal system - Google Patents
A kind of plasma coagulation integrated effluent disposal system Download PDFInfo
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- CN208949051U CN208949051U CN201821433339.0U CN201821433339U CN208949051U CN 208949051 U CN208949051 U CN 208949051U CN 201821433339 U CN201821433339 U CN 201821433339U CN 208949051 U CN208949051 U CN 208949051U
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Abstract
The utility model discloses a kind of plasma coagulation integrated effluent disposal systems, comprising: automatic control device, plasma purification device, coagulation device and sludge treatment equipment.Wherein, plasma purification device includes plasma generator, the pulse power and reaction tank, and the sewage inlet of plasma generator enters for sewage, and outlet of sewer is connected to the water inlet of reaction tank；Coagulation device includes the coagulating basin being sequentially communicated, helps solidifying pond and sedimentation basin, and the sewage inlet of coagulating basin is connected to the water outlet of the reaction tank, and sedimentation basin is equipped with water purification outlet and sludge outlet；Sludge treatment equipment includes sludge pump, gravity precipitation and separation pond, physical and chemical conditioner and dewaterer.The utility model can remove COD, BOD, total phosphorus, ammonia nitrogen, total nitrogen and the coloration in sewage.It is particularly suitable for sewage treatment and proposes mark transformation, water outlet is made to reach quasi- IV standard of " water environment quality standard (GB3838-2002) " earth's surface or higher water standard.
Description
Technical field
The utility model relates to a kind of technical field of water body purification, and in particular to a kind of plasma coagulation integrated sewage water
Processing system.
Background technique
In order to improve water environment, State Council in 2015 has been assigned " about the notice (state for printing and distributing water prevention and cure of pollution action plan
Hair (2015) 17) ".The sewage treatment process of existing majority municipal sewage plant is mainly Activated Sludge Process and life
Two kinds of object membrane process craft.Wherein common equipment includes A2/O and its processing unit (such as UCT technique) of improved process, various oxygen
Change ditch process unit, SBR class and its modification technique (CAST technique etc.) device etc..If using these process units water outlet not
Advanced treating is carried out, majority can only achieve " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) level-one B mark
Quasi- effluent index cannot reach the effluent quality of level-one A standard, be unable to satisfy (2015) No. 17 " water prevention and cure of pollution action of promulgated by the State Council
The level-one A standard requirements of plan ".
In addition, existing level-one B sewage treatment plant is retrofitted to level-one A or " water environment quality standard GB3838-2002 "
Representative technique have:
(1) " biological denitrificaion+coagulation for phosphorus removal+filtering " technique；
(2) " coagulation for phosphorus removal+MBR " technique.
The principle of above-mentioned coagulation process is using metal high price salt, such as aluminium polychloride (PAC), with the phosphate radical in sewage
Reaction generates calcium phosphate precipitation, is removing PO4 3-While, it can remove part COD and BOD, but remove the effect of COD and BOD
Fruit is subject to certain restrictions, it is often more important that cannot remove ammonia nitrogen and total nitrogen simultaneously.Simultaneously as the phosphorus in sewage with biological phosphorus, have
Three kinds of forms of machine phosphorus and Phos exist, and existing coagulating sedimentation can only remove Phos, biological phosphorus and organic phosphorus cannot be formed
Precipitating removal, although joined excessive coagulant, phosphorus content is still exceeded in sewage after processing.It is filled to existing sewage treatment
Set mention mark transformation when, in addition to increase coagulation device, also to increase for removing COD, BOD, ammonia nitrogen and the denitrification of total nitrogen
Device or aeration biological filter device (BAF), not only investment is more, process flow is long, but also takes up a large area.Therefore, one is needed
Kind integrate removal COD, BOD, ammonia nitrogen, total nitrogen, coloration and total phosphorus compact-sized sewage treatment process and device.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of plasma coagulation integration is dirty
Water treatment system is to overcome above-mentioned the problems of the prior art.
The utility model is achieved through the following technical solutions:
The utility model provides a kind of plasma coagulation integrated effluent disposal system, comprising:
Automatic control device, for controlling the self-purging of the plasma coagulation integrated effluent disposal system
Journey；
Plasma purification device, including plasma generator, the pulse power and reaction tank, the plasma occur
The sewage inlet of device enters for sewage, and the water inlet of the sewage inlet of the plasma generator and the reaction tank connects
It is logical；
Coagulation device, including be sequentially communicated coagulating basin, help solidifying pond and sedimentation basin, the sewage inlet of the coagulating basin and institute
State the water outlet connection of reaction tank, the sedimentation basin is equipped with water purification outlet and sludge outlet, the water purification outlet and it is above-mentioned it is equal from
The sewage inlet of daughter generator is connected to, and is additionally provided with recirculated water in the connecting line of the water purification outlet and plasma generator
Pump；
Sludge treatment equipment, including sludge pump, gravity precipitation and separation pond, physical and chemical conditioner and dewaterer, the sludge pump
Input port be connected to the sludge outlet, the delivery outlet of the sludge pump is connected to gravity precipitation and separation pond, and the gravity is heavy
The inlet communication of the outlet of shallow lake separate tank and the physical and chemical conditioner, the import of the physics and chemistry conditioner outlet and the dewaterer
Connection.
Specifically, the lower part of the reaction tank is equipped with water distributor, and the input terminal of the water distributor is connected to the water inlet.
Preferably, the top of the flotation tank is additionally provided with slag scraping device and dross collecting tank, the slag scraping device be it is reciprocating or
Rotary slag scraping device, the dross collecting tank are connected to the sludge pump.
Further, the coagulating basin includes coagulation agent feeding device and coagulation stirrer, is store in coagulation agent feeding device
Keeping mass ratio is 5~10% ferrous sulfate solutions；
Further, described that solidifying pond is helped to include pond body, flocculation aid feeding device and help solidifying blender, the flocculation aid feeds
The PAM solution for being 1~2 ‰ stored with mass ratio in device.
Sludge condensation area including area and bottom in upper clarification zone, separation of solid and liquid in the sedimentation basin, the upper clarification zone it is upper
End is equipped with weir plate and sink, and the sludge outlet is provided with the sludge condensation area bottom.
The coagulation device further includes sludge reflux pump, for the partial sludge in the sedimentation basin to be back to described help
In solidifying pond, the input port of the sludge reflux pump is connected to the sludge outlet.
Specifically, the input port of the sludge pump is connected to the sludge outlet and dross collecting tank respectively, the sludge
The inlet communication of the delivery outlet of pump and gravity precipitation and separation pond.
Specifically, include top regions, middle layer region and area, lower layer from top to bottom in gravity precipitation and separation pond, it is described on
The outlet in floor area is for being connected to biochemistry pool, the outlet in the area, lower layer and the inlet communication of the dewaterer, the middle layer region, reason
Change conditioner and dewaterer is sequentially sequentially communicated；
Preferably, blender is additionally provided in gravity precipitation and separation pond.
Preferably, the coagulation device further includes the chemicals dosing plant for adjusting pH value, in the chemicals dosing plant for adjusting pH value
Storage has sodium hydroxide or sodium carbonate, and when the pH of sewage in coagulation process is less than 7, the chemicals dosing plant for adjusting pH value is to institute
The pH value of chemicals addition control sewage in coagulating basin is stated to 7~9.
A kind of plasma coagulation integrated effluent disposal system of the utility model, has the following beneficial effects:
1, the utility model substitutes polymeric aluminum (PAC) with ferrous sulfate, and under equal conditions, pharmaceutical use is small, reduces dirty
Mud production quantity, medicament expense are greatly reduced.
2, the integrated apparatus of the utility model integrates plasma for purification and coagulating sedimentation, and device is compact, mixed
While solidifying dephosphorization, COD, BOD can be not only removed simultaneously, can also remove 95~99.99% ammonia nitrogens, 30~70% simultaneously always
Nitrogen, 80~95% colorations, occupied area is small, and processing step is simple.
3, the utility model dephosphorization is thorough, biological phosphorus in sewage water body and organic phosphorus generates nothing under the action of free radical
Machine phosphate radical can form ferric phosphate precipitating, after coagulation for phosphorus removal, total phosphorus content≤0.2mg/L with iron ion.
4, the utility model makes water decomposition generate oxygen, purified water body dissolution by plasma strike hydrone
Oxygen content is tall and big can to effectively improve the dissolved oxygen of water body in 7mg/L, effectively inhibit the growth of algae.
5, the utility model using plasma is handled, and destroys the electric equilibrium of sewage, sewage water body is de- steady, and it is heavy to can speed up
Form sediment simultaneously decontamination of biological phosphorus.
Detailed description of the invention
It, below will be to institute in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the utility model
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the utility model
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the plasma purification device of the utility model.
In figure: 100- plasma purification device, 110- plasma generator, the 120- pulse power, 130- reaction tank,
131- water inlet, 132- water outlet, 133- flotation tank, 134- clear water reserviors, 135- partition, 136- cross the mouth of a river, 140- water distributor,
150- slag scraping device, 160- dross collecting tank, 200- coagulation device, 210- coagulating basin, 220- help solidifying pond, 230- sedimentation basin, 231-
Upper clarification zone, 232- be separated by solid-liquid separation in area, 233- sludge condensation area, 240- water circulating pump, 250- sludge reflux pump, at 300- sludge
Reason device, 310- sludge pump, 320- gravity precipitation and separation pond, 330- physics and chemistry conditioner, 340- dewaterer, 410- polluted-water,
420- water cut dam, 430- cut dirty pipe.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out clearly the technical solution in utility model embodiment
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
Reference book attached drawing 1-2, a kind of plasma coagulation integrated effluent disposal system, comprising:
Automatic control device, for controlling the self-purging of the plasma coagulation integrated effluent disposal system
Journey；
Plasma purification device 100, including plasma generator 110, the pulse power 120 and reaction tank 130, it is described
The sewage inlet of plasma generator 110 for sewage enter, the outlet of sewer of the plasma generator 110 with it is described
The water inlet 131 of reaction tank 130 is connected to；
Coagulation device 200, including be sequentially communicated coagulating basin 210, help solidifying pond 220 and sedimentation basin 230, the coagulating basin
210 sewage inlet is connected to the water outlet 132 of the reaction tank 130, and the sedimentation basin 230 is equipped with water purification outlet and sludge goes out
Mouthful, the water purification outlet is connected to the sewage inlet of discharge outlet and above-mentioned plasma generator 110, the water purification outlet and etc.
Water circulating pump 240 is additionally provided in the connecting line of plasma generator 110；
Sludge treatment equipment 300, including sludge pump 310, gravity precipitation and separation pond 320, physical and chemical conditioner 330 and dewaterer
340, the input port of the sludge pump 310 is connected to the sludge outlet, delivery outlet and the gravity precipitating point of the sludge pump 310
It is connected to from pond 320, the inlet communication of the outlet in gravity precipitation and separation pond 320 and the physical and chemical conditioner 330, the physics and chemistry
The inlet communication of conditioner 330 outlet and the dewaterer 340.
Preferably, flow sensor is also equipped in the inlet pipeline of the plasma generator 110.
Specifically, triple valve is equipped at the sedimentation basin water purification outlet.
In a specific embodiment, the reaction tank 130 includes cabinet and the flotation tank being disposed adjacent in cabinet
133 and clear water reserviors 134, the water inlet 131 be provided on 133 side wall of flotation tank, the water outlet 132 is provided with described
On 134 side wall of clear water reserviors, setting had the partition 135 at the mouth of a river 136, the gas between the flotation tank 133 and clear water reserviors 134
Floating pond 133 is connected to clear water reserviors 134 by the mouth of a river 136 of crossing.
Preferably, the partition 135 include first partition disposed in parallel and second partition, the first partition with it is described
Flotation tank 133 is adjacent, and the second partition is adjacent with the clear water reserviors 134, and the top of the first partition offers the first mistake
The mouth of a river, the bottom end of the second partition offer second and cross the mouth of a river, and the space between the first partition and second partition is formed
Cross water flow passage.
It preferably, include at least one set of electrode group in above-mentioned plasma generator 110, optionally, the electrode is stone
One of ink, iron, aluminium, zinc, copper, lead, nickel, alloy and inert electrode with precious metal oxide coating.
Preferably, the pulsed operation voltage of the plasma generator 110 be 0.3~30KV, current density be 1~
10mA/cm2, frequency be 5~80KHz, residence time of the polluted-water (410) in plasma generator 110 be 1s~
10s。
Specifically, the lower part of the reaction tank 130 is equipped with water distributor 140, for export plasma generator 110
Polluted-water (410) is uniformly distributed in 130 inner region of reaction tank, the input terminal of the water distributor 140 and the water inlet 131
Connection.
Preferably, residence time of the polluted-water (410) in the reaction tank 130 is 10-30min.
Preferably, water outlet weir plate, the water outlet weir plate and the clear water reserviors 134230 are additionally provided at the water outlet 132
Pool wall forms effluent trough, so that water homogenisation out.
Preferably, the top of the reaction tank 130 is additionally provided with slag scraping device 150 and dross collecting tank 160, the slag scraping device
150 be reciprocating or rotary slag scraping device 150, and the dross collecting tank 160 is connected to the sludge pump 310.
Further, the coagulating basin 210 includes coagulation agent feeding device and coagulation stirrer, in coagulation agent feeding device
It is 5~10% ferrous sulfate solutions stored with mass ratio；The dosage of the coagulant is 1~20g/m3。
Preferably, coagulation agent feeding device includes connected metered charge pump and coagulant feed pot.
Further, described to help solidifying pond 220 including pond body, flocculation aid feeding device and help solidifying blender, the flocculation aid
The PAM solution for being 1~2 ‰ stored with mass ratio in feeding device；
Preferably, the flocculation aid feeding device includes connected helping solidifying feed pot and pumping with metered charge；
Sludge condensation area 233 including area 232 and bottom in upper clarification zone 231, separation of solid and liquid in the sedimentation basin 230, institute
The upper end for stating upper clarification zone 231 is equipped with weir plate and sink, and the sludge outlet is provided with 233 bottom of sludge condensation area；
The coagulation device 200 further includes sludge reflux pump 250, for returning the partial sludge in the sedimentation basin 230
It is helped in solidifying pond 220 described in flowing to, increases sludge concentration, bulky grain sludge is promoted to be formed, improved sludge separation in sedimentation basin 230 and imitate
The input terminal of fruit, the sludge reflux pump 250 is connected to the sludge outlet.
Specifically, threeway is additionally provided on the pipeline of the sludge outlet connection.
Preferably, the sedimentation basin 230 includes High-rate sedimentation or inclined-tube sedimentation tank 230.
Specifically, the input terminal of the sludge pump 310 is connected to the sludge outlet and dross collecting tank 160 respectively, institute
The output end for stating sludge pump 310 is connected to the input terminal in gravity precipitation and separation pond 320, gravity precipitation and separation pond 320
Interior includes top regions, middle layer region and area, lower layer from top to bottom, and the output end of the top regions is for being connected to biochemistry pool, under described
The output end in floor area is connected to the input terminal of the dewaterer 340, and the middle layer region, physical and chemical conditioner 330 and dewaterer 340 are pressed
Sequence is sequentially communicated；Blender is additionally provided in gravity precipitation and separation pond 320.
Preferably, the dewaterer 340 includes plate and frame filter press, pocket type dewaterer 340 or centrifugal dehydrator 340.
The automatic control device includes controller, conductivity sensor, flow sensor, potentiometric sensor, stirring turn
Fast sensor, temperature sensor, chlorine sensor, hydrogen sensor, COD sensor and pH sensor, PLC and valve group, it is described
Valve group includes motor-driven valve or pneumatic operated valve.
Above controller includes control unit, fault detection unit, data receipt unit and data processing unit, the number
It include computing module and judgment module according to processing unit, the fault detection unit can receive fault-signal and be sent to control
Unit；The data receipt unit can receive water quality, system operation, valve group switch state and the pump that above-mentioned each sensor obtains
The working signals such as operating status, and it is sent to data processing unit, it is single by being delivered to control after computing module and resume module
Member.Described control unit can issue instruction, water body plasma for purification, precipitation process of coagulation, Treatment of Sludge in control system
Process flows back and purifies again.The automatic fortune of plasma coagulation integrated effluent disposal system is realized by automatic control device
Row, and then realize the self-purging of polluted-water (410).
A kind of application method of plasma coagulation integrated effluent disposal system provided by the utility model, including it is as follows
Step:
S1. corona treatment: sewage transport is stopped into 1-10s into plasma generator 110, plasma occurs
The substance reaction in plasma and sewage water body that device 110 generates generates free radical, the arteries and veins of the plasma generator 110
Rushing operating voltage is 0.3~30KV, and current density is 1~10mA/cm2, working frequency is 5~80KHz；
S2. pollutant purification reacts: water outlet is evenly distributed in reaction tank 130 by water distributor 140 in S1, the residence time
For 10-30min, the plasma and free radical in water body and the pollutant reaction in water body, the gas generated in reaction process
Play the role of air bearing simultaneously, the dross for flotating to water surface is collected in dross collecting tank 160 by slag scraper；
S3. coagulation: the water body after reacting in S2 enters coagulating basin 210, passes through coagulation dosing device and 1~20g/m is added3Sulphur
Sour ferrous iron solution is simultaneously stirred continuously, and mixing speed is 20~60r/min, and the coagulating time is 5~10min；
S4. help solidifying: the sewage in S3 after coagulating, which enters, helps solidifying pond 220, by helping solidifying chemicals dosing plant that PAM is added, adds
The relationship of the weight and sewage volume that enter PAM is 0.1~1g/m3, stir and react 3~10min, 10~30r/ of mixing speed
min；
S5. it precipitates: being helped the sewage of solidifying reaction to enter sedimentation basin 230 in S4, be separated by solid-liquid separation, clear liquid concentrates on described
The upper layer of sedimentation basin 230 forms upper clarification zone 231, and sludge condensation area is formed on the bottom that solid matter is gathered in the sedimentation basin 230
233, the middle part of the sedimentation basin 230 forms area 232 in separation of solid and liquid；When helping the precipitation capacity that is formed in solidifying pond 220 not in S4 step
When sufficient, sludge reflux pump 250 is opened, partial sludge is passed back into from the sedimentation basin 230 helps solidifying pond 220, and precipitating is promoted to generate；
S6. circulating purification: judge the water quality of the upper clear supernate of sedimentation basin 230 described in S5, water quality reaching standard then exports, and water quality is not
It is up to standard, water circulating pump 240 is opened, the S5 clear liquid exported is delivered in plasma generator 110, above-mentioned step is reentered
Rapid S1-S6.
Preferably, the plasma coagulation integral sewage disposal process further includes Treatment of Sludge step, comprising:
(1) sludge condensation area in sedimentation basin 230 described in the dross and S5 in dross collecting tank 160 described in above-mentioned S2
Sludge in 233 is delivered in gravity precipitation and separation pond 320 by sludge pump 310, by stirring, utilizes water, organic matter and nothing
The density variation of machine object three carries out gravity precipitation and separation, forms supernatant layer, middle layer organic matter enriched layer and lower layer's inorganic layer；
(2) liquid in above-mentioned supernatant layer biochemistry pool is delivered to as charcoal source to supplement, above-mentioned middle layer organic matter is rich
Substance is delivered to physical and chemical conditioner 330 in collection layer, and the substance of above-mentioned lower layer's inorganic layer is delivered to dewaterer 340 and is carried out at dehydration
Reason to moisture content less than 60% after collect it is spare；
(3) physical and chemical conditioner is added in above-mentioned physical and chemical conditioner 330, then be delivered in dewaterer 340 be processed into it is organic
Collected after clod it is spare, it is described physics and chemistry conditioner include lime, ferric trichloride and aluminium polychloride.
Above-mentioned organic clod is used as the raw materials for production or fuel of Organic carbon fertilizer, and lower layer's inorganic layer, which is dehydrated, to be formed
Substance can be used as building materials raw material, for producing building brick or haydite.
In a specific embodiment, polluted-water 410 is cut by 420 segment processing of water cut dam and by cutting dirty pipe 430
Dirt, after preliminary sedimentation and filtering, polluted-water 410, which enters above-mentioned plasma coagulation integrated effluent disposal system, to be carried out
Purified treatment.When the mobility of polluted-water 410 is preferable, the purification of plasma coagulation integrated effluent disposal system output
Water afterwards is delivered to the downstream of water body, the i.e. outside of water body downstream water cut dam 420；When the mobility of polluted-water is poor, etc.
The purified water of gas ions coagulation integrated effluent disposal system output is delivered to the upstream of water body.
By above step, COD removal 40~80%, BOD removal 80~99% in sewage, total phosphorus remove 60~95%
(water outlet total phosphorus≤0.1mg/L), ammonia nitrogen removal 95~99.99%, total nitrogen remove 30~70%, color removal 80~95%, special
Be not suitable for sewage water outlet proposes mark transformation, and water outlet is made to reach level-one A standard or " water environment quality standard " (GB3838-
2002) IV class or III class water water standard in.
The plasma coagulation integrated effluent disposal system of the utility model and the action principle of method:
One, plasma for purification is handled
Plasma generator 110 generates a large amount of plasma when working, plasma and water body act on, and generates a large amount of
Highly active free radical, wherein O and OH can be reacted with its organic molecule generates water and carbon dioxide；O and NH3
Reaction generates water and NO3 ﹣；Cl and H and NO3 ﹣It is reacted with ammonia nitrogen and generates N2And H2O。
H that is that action of plasma generates and participating in reaction not in time generates hydrogen, forms a large amount of microbubble；This
Outside, H and NO3 ﹣And NO2 ﹣Reaction generates N2, also form a large amount of microbubble.With the floating of these hydrogen and nitrogen microbubble,
A large amount of solid suspension can be taken out of, achieve the effect that separation of solid and liquid, form air bearing effect, further decrease COD in waste water,
The pollution indexs such as coloration, turbidity.
The malodoring substance in free radical and polluted-water 410 that action of plasma generates acts on, and can eliminate stink, because
This, the effect of the elimination stink of plasma purification device 100 also.
1, COD, BOD principle are taken off
RH organic matter+O-→ CO2↑+H2O
RH organic matter+HO-→ CO2↑+H2O
·Cl+H2O—→HClO—→O·+HCl
2, decoloration (removing stink) principle
R-R ' (R ' indicates organic matter chromophoric group)+O-→ CO2↑+H2O
3, ammonia nitrogen removal principle
NH3+O·—→NO3 ﹣+H2O
4, nitrate nitrogen principle is taken off
NO2 ﹣+O·—→NO3 ﹣
NO3 ﹣+H·—→NO2 ﹣+H2O
NO2 ﹣+H·—→N2↑+H2O (denitrogenation main reaction)
Two, coagulation
Coagulant, Fe is added2+With free radical Cl, O, OH or Cl of generation2Reaction generates Fe3+, Fe3+With PO4 3-
Reaction generates the phosphorus that ferric phosphate precipitating removes decontaminated water, with OH-Reaction generates Fe (OH)3Precipitating carries out coagulating, is made by absorption
With organic matters such as removing petroleum-type, vegetable and animals oils.
The principle of coagulating sedimentation dephosphorization:
Phosphorus in sewage usually with inorganic phosphate radical, biological phosphorus (the biological phosphate radical of DNA, RNA of such as organism) and has
Three kinds of forms such as machine phosphorus exist.Under the action of plasma and free radical, the biological phosphate radical of the DNA and RNA of organism are released
Put into inorganic PO4 3-, it is organic phosphorus to be transformed into inorganic PO43-, convenient for being precipitated with phosphoric acid Iron speciation, while being made by the absorption of precipitating
With organic matters such as removing petroleum-type, vegetable and animals oils.
Fe2++Cl·—→Fe3++Cl﹣
Fe2++OH·—→Fe3++OH﹣
Fe3++PO4 3-—→FePO4↓ (dephosphorization main reaction)
Fe3++3OH﹣—→Fe(HO)3↓
Meanwhile by coagulation, extra free radical can be consumed.
Three, it helps solidifying
Step is by being added flocculation aid, 0.1~1g/m3PAM solution, and be 30~80 revs/min of stirrings in revolving speed, promote big
Particle wadding body (alumen ustum) generates, and is separated by solid-liquid separation into sedimentation basin 230；When the precipitation capacity of formation is little, alumen ustum frequently, is opened
Sludge reflux pump 250 passes back into the sludge part of sedimentation basin 230 and helps solidifying pond, and alumen ustum is promoted to be formed.
Four, precipitation and separation
Sewage after helping solidifying reaction enters sedimentation basin 230 from the middle part of sedimentation basin 230, is separated by solid-liquid separation, clear liquid
It is mobile to top, sink is flowed into through weir plate；Sludge settles to the lower part, builds up in the bucket of 230 bottom of sedimentation basin, through sludge pump
In 310 input sludge treatment equipments 300.
Five, sludge dewatering
It is pumped into gravity precipitation and separation pond 320 by the mud that coagulating sedimentation generates by gravity concentration, gravity precipitating point
Biochemistry pool processing is pumped into from the supernatant in pond 320 Jing Guo Gravity Separation；Middle layer organic matter is delivered to physical and chemical conditioner 330, adds
Enter the conditioners such as lime, ferric trichloride, aluminium polychloride, then is dehydrated into clod through dewaterer 340；Lower layer is fed directly to be dehydrated
Machine 340 is dehydrated into clod.
Embodiment 1
The water quality indicator of table 1, certain secondary sedimentation tank of sewage treatment work
Secondary clarifier effluent enters plasma purification device 100, the work electricity of plasma generator 110 after the biochemistry
Pressure is 300V, current density 10mA/cm2, by ferrous sulfate solution 13g/m3, coagulation is anti-under conditions of revolving speed is 20r/min
Ying Hou, by 1g/m3Flocculation aid PAM is added, enters sedimentation basin 230 after reaction under conditions of revolving speed is 10r/min and separates, water outlet
Water quality such as table 2.
Water quality indicator after table 2, processing
| Serial number | Basic item controlled | Measured value (mg/L) |
| 1 | COD | 29 |
| 2 | BOD | 3 |
| 3 | SS | 8 |
| 4 | Vegetable and animals oils | 0.5 |
| 5 | Petroleum-type | 0.3 |
| 6 | Anionic surfactant | 0.1 |
| 7 | Total nitrogen (in terms of N) | 9 |
| 8 | Ammonia nitrogen (in terms of N) | 0.09 |
| 9 | Total phosphorus (in terms of P) | 0.08 |
| 10 | Dissolved oxygen | 8.12 |
| 11 | Coloration (extension rate) | 4 |
| 12 | pH | 8~9 |
| 13 | Excrement colibacillus group number (a/L) | 1.0×102 |
As known from Table 2, the effluent index of sewage after treatment fully meets " urban sewage reutilization landscape environment use
Water water quality " standard (GB/T18921-2002) standard, meanwhile, also fully meet " water environment quality standard " (GB3838-
2002) standard of standard earth's surface IV.
Embodiment 2
Water quality indicator after table 3, certain secondary sedimentation tank of sewage treatment work precipitating
| Serial number | Basic item controlled | Measured value (mg/L) |
| 1 | COD | 59 |
| 2 | BOD | 20 |
| 3 | SS | 28 |
| 4 | Vegetable and animals oils | 2 |
| 5 | Petroleum-type | 3 |
| 6 | Anionic surfactant | 1 |
| 7 | Total nitrogen (in terms of N) | 23 |
| 8 | Ammonia nitrogen (in terms of N) | 9 |
| 9 | Total phosphorus (in terms of P) | 1.0 |
| 10 | Coloration (extension rate) | 45 |
| 11 | pH | 6~7 |
| 12 | Excrement colibacillus group number (a/L) | 1.26×105 |
The level-one B water outlet enters back into coagulation reaction tank 130, plasma hair after entering plasma purification device 100
The operating voltage of raw device 110 is 500V, current density 5mA/cm2, by 15g/m3Ferrous sulfate solution is added, and adds 5% hydrogen-oxygen
Change sodium solution to adjust pH to 8~9 (since pH is 6~7), it is solidifying into helping under conditions of revolving speed is 40r/min after coagulating
It fills, by 1g/m3Flocculation aid PAM is added and enters the separation of solid and liquid of sedimentation basin 230 after coagulation under conditions of revolving speed is 20r/min, out
Water water quality such as table 4.
Table 4, treated water quality indicator
As known from Table 4, effluent index after treatment fully meets " urban wastewater treatment firm pollutant emission standard "
(GB18918-2002) level-one A class standard in, meanwhile, also fully meet " water environment quality standard " (GB3838-2002)
The standard of standard earth's surface IV.
Embodiment 3
Water quality indicator after table 5, certain secondary sedimentation tank of sewage treatment work
| Serial number | Basic item controlled | Measured value (mg/L) |
| 1 | COD | 45 |
| 2 | BOD | 9 |
| 3 | SS | 20 |
| 4 | Vegetable and animals oils | 3 |
| 5 | Petroleum-type | 1 |
| 6 | Anionic surfactant | 1 |
| 7 | Total nitrogen (in terms of N) | 19 |
| 8 | Ammonia nitrogen (in terms of N) | 5 |
| 9 | Total phosphorus (in terms of P) | 1.2 |
| 10 | Coloration (extension rate) | 30 |
| 11 | pH | 6~7 |
| 12 | Excrement colibacillus group number (a/L) | 1.26×105 |
The level-one B water outlet is since COD, BOD are lower, and only total nitrogen, ammonia nitrogen, total phosphorus, petroleum class and zoology and botany oil are super
Mark, electricity consumption is less when corona treatment, and water outlet enters coagulating basin 210 after processing, by 3g/m3Ferrous sulfate solution is added, and
5% sodium carbonate liquor is added to adjust pH to 8~9 (since pH is 6~7), under conditions of revolving speed is 60r/min after coagulating,
Into solidifying pond 220 is helped, by 0.1g/m3Flocculation aid PAM is added and enters sedimentation basin after reaction under conditions of revolving speed is 30r/min
230 separation, effluent quality such as table 6.
Table 6, treated water quality indicator
| Serial number | Basic item controlled | Measured value (mg/L) |
| 1 | COD | 30 |
| 2 | BOD | 5 |
| 3 | SS | 8 |
| 4 | Vegetable and animals oils | 0.5 |
| 5 | Petroleum-type | 0.3 |
| 6 | Anionic surfactant | 0.2 |
| 7 | Total nitrogen (in terms of N) | 10 |
| 8 | Ammonia nitrogen (in terms of N) | 0.2 |
| 9 | Total phosphorus (in terms of P) | 0.19 |
| 10 | Dissolved oxygen | 8.2 |
| 11 | Coloration (extension rate) | 4 |
| 12 | pH | 6~9 |
| 13 | Excrement colibacillus group number (a/L) | 1.35×102 |
As known from Table 6, by treated above, effluent index fully meets " urban wastewater treatment firm pollutant emission mark
It is quasi- " level-one A class standard in (GB18918-2002), meanwhile, also fully meet " water environment quality standard " (GB3838-
2002) standard of standard earth's surface IV.
The preferred embodiment of the utility model has shown and described in above description, as previously described, it should be understood that this is practical new
Type is not limited to forms disclosed herein, and should not be regarded as an exclusion of other examples, and can be used for various other groups
Conjunction, modification and environment, and above-mentioned introduction or the technology of related fields can be passed through within the scope of the inventive concept described herein
Or knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, then
It all should be in the protection scope of the appended claims for the utility model.
Claims (10)
1. a kind of plasma coagulation integrated effluent disposal system characterized by comprising
Automatic control device, for controlling the self-purging process of the plasma coagulation integrated effluent disposal system；
Plasma purification device (100), including plasma generator (110), the pulse power (120) and reaction tank (130),
The sewage inlet of the plasma generator (110) enters for sewage, and the sewage of the plasma generator (110) goes out
Mouth is connected to the water inlet (131) of the reaction tank (130)；
Coagulation device (200), including be sequentially communicated coagulating basin (210), help solidifying pond (220) and sedimentation basin (230), the coagulation
The sewage inlet in pond (210) is connected to the water outlet (132) of the reaction tank (130), and the sedimentation basin (230) goes out equipped with water purification
Mouth and sludge outlet, the water purification outlet are connected to the sewage inlet of above-mentioned plasma generator (110), the water purification outlet
Water circulating pump (240) are additionally provided with the connecting line of plasma generator (110)；
Sludge treatment equipment (300), including sludge pump (310), gravity precipitation and separation pond (320), physical and chemical conditioner (330) and take off
The input port of water dispenser (340), the sludge pump (310) is connected to the sludge outlet, the delivery outlet of the sludge pump (310) with
Gravity precipitation and separation pond (320) connection, the outlet in gravity precipitation and separation pond (320) and the physical and chemical conditioner (330)
Inlet communication, the physics and chemistry conditioner (330) export the inlet communication with the dewaterer (340).
2. a kind of plasma coagulation integrated effluent disposal system according to claim 1, which is characterized in that described anti-
The lower part of Ying Chi (130) is equipped with water distributor (140), and the input terminal of the water distributor (140) is connected to the water inlet (131).
3. a kind of plasma coagulation integrated effluent disposal system according to claim 2, which is characterized in that described anti-
The top of Ying Chi (130) is additionally provided with slag scraping device (150) and dross collecting tank (160), and the slag scraping device (150) is reciprocating or rotation
Rotatable slag scraping device (150), the dross collecting tank (160) are connected to the sludge pump (310).
4. a kind of any plasma coagulation integrated effluent disposal system, feature in -3 according to claim 1
It is, the coagulating basin (210) includes coagulation agent feeding device and coagulation stirrer, stored with quality in coagulation agent feeding device
Than for 5~10% ferrous sulfate solutions；
It is described that solidifying pond (220) is helped to include pond body, flocculation aid feeding device and help solidifying blender, it is store in the flocculation aid feeding device
Keep the PAM solution that mass ratio is 1~2 ‰.
5. a kind of plasma coagulation integrated effluent disposal system according to claim 4, which is characterized in that described heavy
Sludge condensation area (233) including area (232) and bottom in upper clarification zone (231), separation of solid and liquid in shallow lake pond (230), the supernatant
The upper end in area (231) is equipped with weir plate and sink, and the sludge outlet is provided with the sludge condensation area (233) bottom.
6. a kind of plasma coagulation integrated effluent disposal system according to claim 5, which is characterized in that described mixed
Solidifying device (200) further include sludge reflux pump (250), described for the partial sludge in the sedimentation basin (230) to be back to
It helps in solidifying pond (220), the input port of the sludge reflux pump (250) is connected to the sludge outlet.
7. a kind of plasma coagulation integrated effluent disposal system according to claim 6, which is characterized in that the dirt
The input port of dredge pump (310) is connected to the sludge outlet and dross collecting tank (160) respectively, the sludge pump (310) it is defeated
The inlet communication of outlet and gravity precipitation and separation pond (320).
8. a kind of plasma coagulation integrated effluent disposal system according to claim 7, which is characterized in that described heavy
It include top regions, middle layer region and area, lower layer from top to bottom in power precipitation and separation pond (320), the outlet of the top regions is for connecting
Logical biochemistry pool, the outlet in the area, lower layer and the inlet communication of the dewaterer (340), the middle layer region, physical and chemical conditioner
(330) it is sequentially sequentially communicated with dewaterer (340).
9. a kind of plasma coagulation integrated effluent disposal system according to claim 8, which is characterized in that described heavy
Blender is additionally provided in power precipitation and separation pond (320).
10. a kind of plasma coagulation integrated effluent disposal system according to claim 1, which is characterized in that described
Coagulation device (200) further includes the chemicals dosing plant for adjusting pH value, and storage has sodium hydroxide in the chemicals dosing plant for adjusting pH value
Or sodium carbonate, when the pH of sewage in coagulation process is less than 7, the chemicals dosing plant for adjusting pH value is to the coagulating basin (210)
The pH value of middle chemicals addition control sewage is to 7~9.
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