CN206127046U - Desulfurization waste water zero release processing system of mud retrieval and utilization - Google Patents
Desulfurization waste water zero release processing system of mud retrieval and utilization Download PDFInfo
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- CN206127046U CN206127046U CN201621189740.5U CN201621189740U CN206127046U CN 206127046 U CN206127046 U CN 206127046U CN 201621189740 U CN201621189740 U CN 201621189740U CN 206127046 U CN206127046 U CN 206127046U
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Abstract
The utility model discloses a desulfurization waste water zero release processing system of mud retrieval and utilization, including regulation sedimentation tank, three headers, clarifier and the solution tank who connects gradually, adjust sedimentation tank and waste water source intercommunication, reaction box, neutralization tank and the flocculation tank who connects gradually is drawn together to the trigeminy case and bag, the reaction box with the regulation sedimentation tank is connected, flocculation tank with the clarifier is connected, the reaction box is connected with organic sulfur charge device, adjusting the bottom of sedimentation tank, three headers and clarifier and all passing through pipeline and mud reservoir intercommunication, first pump provides the power that mud circulated at the pipeline, mud reservoir passes through pipeline and desulfurizing tower intercommunication, and the second pump provides the power that mud flows, regards as the desulfurizer to spout in mud and carries out the desulfurization into the desulfurizing tower. Through changing the order of addition of ingredients, change the nature of heavy metal precipitate, make it can return desulfurization system not by redissolving. Complete retrieval and utilization has been realized to the mud of desulfurization wastewater treatment in -process.
Description
Technical field
This utility model is related to a kind of waste water zero discharge treatment process, and in particular to a kind of desulfurization wastewater zero of sludge reuse
Discharge treating system.
Background technology
Desulfurization wastewater originates from Calcium Carbonate-calcium sulfate wet method fume desulfurizing system, water quality in acidity, containing a large amount of float,
Salt, heavy metal ion, fluorion etc..Wherein based on sodium, potassium, calcium, the chlorate of magnesium and sulfate, float is with stone for salt
Based on cream, silicon dioxide, heavy metal is such as directly discharged into environment with the presence of the metal ion forms such as hydrargyrum, cadmium, chromium, lead, nickel, copper, zinc
Harm is very big.
Current processing means mainly adopt chemical precipitation+membrance concentration+evaporative crystallization, heavy by neutralization, reaction, flocculation
Shallow lake (being commonly called as three headers) carries out water quality neutralization, removing heavy metals, clarifying treatment.Because desulfurization wastewater contains plurality of heavy metal and sulphuric acid
Salt, magnesium ion, add lime cream in waste water first, are under the conditions of 9～10 in pH value, heavy metal chromium, lead in desulfurization wastewater,
Nickel, copper, zinc can be precipitated in the form of hydroxide, while the magnesium ion and sulfate ion in water can react with lime cream
Generate magnesium hydroxide and calcium sulfate precipitation.The hydroxide solubility product of hydrargyrum, cadmium in heavy metal ion is larger, can only be in water
Sulfide is added, is precipitated in the form of sulfide, heavy metal could completely be precipitated.Inorganic sulphide is added to make to vulcanize in water
Thing and sulfate are exceeded, and general employing adds organic sulfur in waste water.Clear water after clarifying treatment is carried out into Zero discharging system
Further process, the sludge of clarifying process precipitation enters dehydration device, and sludge quantity is big, easily forms pipeline dirty stifled.And be dehydrated
Sludge afterwards contains plurality of heavy metal, can only be processed as danger is useless, and processing cost is very high.
Utility model content
For technical problem present in above-mentioned prior art, a purpose of the present utility model is to provide a kind of sludge
The desulfurization wastewater zero-discharge treatment system of reuse.
Second purpose of the present utility model is to provide a kind of zero emission treatment of desulfured waste water of sludge reuse.
In order to solve above technical problem, the technical solution of the utility model is：
A kind of desulfurization wastewater zero-discharge treatment system of sludge reuse, including the regulation sedimentation tank, three headers being sequentially connected,
Defecator and filtered water tank, adjust sedimentation tank and connect with waste water source；
Three header includes reaction chamber, neutralization case and flocculation tanks, reaction chamber and the regulation sedimentation tank being sequentially connected
Connection, flocculation tanks are connected with the defecator；The reaction chamber is connected with organic sulfur chemicals dosing plant；
The bottom for adjusting sedimentation tank, three headers and defecator is all connected by pipeline with sludge storage pool, the first pump
The power that sludge flows in pipeline is provided；
Sludge storage pool is connected by pipeline with desulfurizing tower, and the second pump provides the power of sludge flowing, using sludge as desulfurization
Agent sprays into desulfurizing tower and carries out desulfurization.
Herein, adjust sedimentation tank and the space that desulfurization wastewater is stopped is provided, desulfurization wastewater stops one in sedimentation tank is adjusted
After the section time, on the one hand, the most suspended substances in waste water precipitate so that contain in the desulfurization wastewater in three headers
Float reduce, and then reduce the precipitation produced in three headers, it is to avoid follow-up equipment is blocked because precipitation is excessive.
On the other hand, in holding process, the various ions in different quality spread desulfurization wastewater, when stopping setting
Between after, adjust sedimentation tank in water quality tend to uniform.After water quality is uniform, when being processed into follow-up equipment, the dirt of generation
Mud amount tends to uniform, and the load of follow-up equipment reaches unanimity, and equipment will not be caused excessive shock, and extends the use of equipment
Life-span, and improve desulfurization wastewater treatment effect.
Three headers, are traditionally the neutralization case, reaction chamber and the flocculation sediment case that are sequentially connected, be herein will neutralization case and
The position of reaction chamber is exchanged, the reaction that organic sulfur and heavy metal ion occur first in reaction chamber, is removed in the form of precipitating
Heavy metal ion in desulfurization wastewater, heavy metal precipitation now can be 3-14 in pH value, in environment of the temperature less than 300 DEG C
Stable existence.When the sludge containing heavy metal precipitation thing is back to desulfurization, the pH value of desulfurization slurry is 4-6 or so, and temperature is
50～100 DEG C, now, not the heavy metal precipitation thing in sludge be able to will not be re-dissolved in desulfurization wastewater, i.e., with stable existence
Enrichment can be produced in desulfurization wastewater.
The main component of desulphurization system Gypsum Fibrosum is calcium sulfate, magnesium sulfate, and sludge generates sulfur as desulfurizing agent and smoke reaction
Sour calcium, magnesium sulfate, discharge at the de- Gypsum Fibrosum device of desulphurization system, a part for desulfurated plaster are eventually become, outside desulfurated plaster
Sell process.Wherein heavy metal precipitation thing also into desulfurated plaster, according to relevant criterion, such as《Desulfurized gesso of flue gas JC/T 2074-
2011》The content of heavy metal in desulfurated plaster is not required, so, the heavy metal ion in desulfurization wastewater has been obtained effectively
Process, saved the processing cost of danger waste sludge, and eliminate the potential safety hazard of heavy metal ion environmental pollution.
If three traditional headers, i.e. heavy metal ion in desulfurization wastewater generate first heavy metal in alkaline environment
Hydroxide precipitation, but these hydroxide are deposited in sour environment and are unable to stable existence, i.e. when containing a huge sum of money
When the sludge of the hydroxide precipitation of category is back to desulphurization system, the hydroxide of heavy metal dissolves again in sour environment,
Into in desulfurization wastewater, the enrichment of heavy metal in desulfurization wastewater is caused, it is desired nonetheless to which costly manpower and materials go to process
Heavy metal in waste water.
It can be seen that, the exchange of the position of three headers is engaged with the reuse of sludge in desulfurization wastewater, produces good effect.
Inorganic sulfur and organic sulfur may be used to remove the heavy metal ion in desulfurization wastewater, but add inorganic sulphide
Sulfide in water and sulfate can be made exceeded, easily environment is worked the mischief.
Organic sulfur is a kind of sulfur-containing compound, and it can be concurrent biochemical anti-by sulfur family and heavy metal ion stable bond
Should, stable organo-metallic compound is formed, not readily dissolve, solid precipitation is formed in water, and then be separated off.It is almost
All of heavy metal can be adsorbed, in the treatment of waste water, the residual heavy metal of all dissolvings can just be removed by simple process,
And metal-precipitate has good temperature stability, heavy metal is difficult to be re-released in environment, is eco-friendly
Heavy metal chelating agent.And, the toxicity of organic sulfur is very low, with good storage stability and processing safety, is not belonging to danger
Article, without bad smell, does not decomposite noxious substance.
Flocculation, makes suspended particulates collection fusion in water or liquid big, or forms floc sedimentation, so as to add the coagulation of fast particle, reaches
The purpose of solid- liquid separation, this phenomenon or operation are referred to as flocculated.Generally, by adding appropriate flocculant, it is made for the enforcement of flocculation
With being adsorbent particles, between microgranule " bridge formation ", so as to promote to gather.Flocculation tanks, are just to provide a kind of equipment of flocculation, there is provided hold
Receive the chamber of liquid, add in a liquid after flocculant, make the float in liquid gather precipitation.
Defecator is a kind of quick mixing, coagulation, device of three kinds of process unifications of precipitation by medicaments such as water and flocculating agents,
The device of the process for realizing precipitation can singly be referred to herein, waste water has been realized in the mixing with medicament and coagulation in three headers
Process.
In wastewater treatment process, adjusting the bottom of sedimentation tank, three headers and defecator can all have the enrichment of sludge, be
The blocking of pipeline is prevented, more in order to reclaim sludge, its bottom is connected by pipeline with sludge storage tank, and by pump by sludge
In pumping into sludge storage tank.
First pump and the second pump are a general designation, are intended merely to sludge storage tank and regulation sedimentation tank, three headers and clear
Pump and the pump between sludge storage tank and desulfurizing tower between clear device is differentiated, and can't have any other restriction to pump.Such as, it is dirty
Mud storage tank can be connected respectively by different pumps with regulation sedimentation tank, three headers and defecator, it is also possible to by same pump
It is connected with these three structures, as long as can realize collecting the effect of sludge.Preferably, between sludge storage tank and above equipment
A pump is respectively coupled, has so more conducively been controlled, but also brought along the raising on cost.Equally, the first pump and the second pump
Can be one species, the pump of same model, or variety classes, the pump of different model.
Sludge storage tank is a kind of container of conventional receiving fluid, should include housing and the chamber surrounded by housing,
Within the chamber can be used to accommodate water or other fluid.During the sludge of each device bottom to be pumped into pump sludge storage tank, also can pump into
More desulfurization wastewater, forms the mixture of sludge and desulfurization wastewater in sludge storage tank.Due to sludge be need to be back to use it is de-
In sulfur system, so the homogeneous of sludge should be kept, simple and effective method is stirring, by applying mechanism
Power, the sludge in sludge storage tank is mixed homogeneously with water, certainly, herein uniformly for relatively uniform.Although aeration is also a kind of
Homogeneous means, but because the density of sludge is larger, sedimentation is susceptible to, and the effect of aeration is slightly worse.
In order to adapt to different desulfurization conditions, the ratio of sludge in sludge storage tank and desulfurization wastewater can be controlled, that is, be controlled
Concentration of the system into the sludge in desulphurization system.And the ratio of sludge and desulfurization wastewater is then adjusted by pump, e.g., the dirt of needs
When mud concentration is big, control pumps into less desulfurization wastewater, and when the concentration hour of the sludge for needing, control pumps into more desulfurization and gives up
Water.
Preferably, the neutralization case is connected with Calx chemicals dosing plant.
Neutralization case, is to adjust the pH value of pending desulfurization wastewater, and precipitates the structure of part ion in desulfurization wastewater, desulfurization
Waste water is acidity, so need to add alkaline matter in desulfurization wastewater, so that desulfurization wastewater is close to neutrality.Due to desulfurization wastewater
In need to remove magnesium ion, to reduce the hardness of desulfurization wastewater, it is therefore desirable to control desulfurization wastewater in alkalescence.
Based on the cost of the alkaline matter for adding, safe operation, and more impurity considerations, alkaline matter one are not introduced
As select be Calx.
Wherein, Calx chemicals dosing plant should at least include the pipe of Calx container, connection Calx container and neutralization case
The structures such as the effusion meter in road, the pump of the offer power being arranged on pipeline and control chemical feeding quantity, can also arrange control system,
Control system is connected with pump, effusion meter and the pH sensor being arranged in neutralization case, constitutes feedback regulation, it is easier to realize
The automatization of Calx, precision are added.
Preferably, the flocculation tanks are connected with flocculant chemicals dosing plant and flocculation aid chemicals dosing plant.
Flocculant can totally be divided into inorganic flocculating agent and the class of organic flocculant two according to its chemical composition, wherein, inorganic wadding
Solidifying agent includes inorganic flocculant and inorganic polymer flocculant again；Organic flocculant again include Syn-Organic flocculants,
Natural organic high-molecular flocculant and microbial flocculant.
Theoretical basiss are：" coalescence " is theoretical, and flocculant is mainly negative with carrying in just (negative) electrical group and water
(just) it is electrical to be difficult to detached some particles or granule is close to each other, reduce its potential so as to play pendulum, and
Using its aggregation property these granules are concentrated, and separated by physics or chemical method.
Flocculation aid, is, when exclusive use coagulant can not attain the results expected, to need to add certain assistant medicament to carry
The medicament of high coagulation effect.
Herein, flocculant and flocculation aid are used cooperatively, and can faster improve the coagulative precipitation of float in desulfurization wastewater
Effect.Flocculant is chloro sulphuric acid ferrum, and flocculation aid is polyacrylamide, makes the float in water become floccule, and is easy to
Precipitation, is easy to the solid-liquid separation of water and sludge.
Flocculant chemicals dosing plant and flocculation aid chemicals dosing plant can be in structure similar with Calx chemicals dosing plant, hold
The stream of container, the pipeline of connection container and flocculation tanks, the pump of the offer power being arranged on pipeline and control chemical feeding quantity
The structures such as gauge, it is also possible to increase control system, constitute closed loop control.
Preferably, the filtered water tank is connected with hydrochloric acid chemicals dosing plant.
Due to the pH value of desulfurization wastewater being adjusted to into alkalescence in neutralization case, so needing to adjust in filtered water tank
The pH value of waste water adds acidic materials and is adjusted to being close to neutrality, and acidic materials add with do not introduce impurity from
Son is principle.
It is further preferred that the bottom of the filtered water tank is provided with aerator, aerator be arranged on the outside of filtered water tank
Aeration fan connects.
Aeration is referred to and be artificially passed through air in clear water reserviors by appropriate equipment, with up to the purpose of Expected Results.Herein
Aeration on the one hand by increasing desulfurization wastewater in dissolved oxygen, to reduce the purpose of the COD of desulfurization wastewater；On the other hand, lead to
Desulfurization wastewater is moved in overexposure gas mixing, makes the mixed in hydrochloric acid added in desulfurization wastewater uniform, balanced water quality, it is to avoid local ph it is too high or
It is too low.Aerator is the structure for realizing aeration, and it should at least include housing, and housing surrounds hollow chamber, the opening of housing
Place is connected with blower fan, and more through hole is distributed on housing, and blower fan is delivered air in chamber, bypasses air through logical in chamber
Hole is entered in filtered water tank.
Clear water reserviors water outlet enters reverse osmosis membrane concentration+evaporation and crystallization system Jing after resin softening, finally distills Water circulation, ties
Process is sold outside brilliant salt.
Reaction chamber, neutralization case, flocculation tanks are respectively provided with reaction box mixer, neutralization box mixer, flocculation box mixer；Instead
Case, neutralization case, the bottom of flocculation tanks is answered to be connected with pump inlet by pipeline.Although having agitating device in casing, casing office
Still there is the phenomenon of sludgd deposition in portion, to avoid sludge from accumulating in a large number in box bottom local, the gravity flow of impact water, therefore three header bottoms
Portion in time can discharge in sludge, it is to avoid the accumulation of sludge added with spoil disposal pipeline, be also easily accessible for service.
Preferably, it is provided with agitator in the sludge storage pool.
The effect of the agitator at this is that sludge is mixed homogeneously with water by mechanicals efforts, is preferably stirred to reach
Mix effect, preferably turbine type agitator or propeller mixer.
Preferably, the bottom for adjusting sedimentation tank and defecator is taper, the least significant end of conical lower portion by pipeline with
Sludge storage pool is connected.
The bottom of the taper is bucket, is easy to collect sludge.
A kind of zero emission treatment of desulfured waste water of sludge reuse, comprises the steps：
Desulfurization wastewater is passed sequentially through after stop precipitation, chemical precipitation and flocculate and clarify are processed and enters regulating water quality, concentration, knot
Brilliant operation；By after the sludge collection, the stirring homogenizing that stop generation during precipitation and chemical precipitation, conduct in desulfurizing tower is rendered to
Desulfurizing agent carries out desulfurization, obtains desulfurated plaster.
Preferably, in the stop settling step, desulfurization wastewater residence time is more than 6h.
Preferably, the chemical precipitation comprises the steps：Add organic sulfur in desulfurization wastewater first, remove heavy metal
Ion；Then to feeding lime breast in desulfurization wastewater, the pH value of desulfurization wastewater, and sediment fraction salt ion are adjusted.
It is further preferred that the organic sulfur is TMT-15 (tri-thiol triazine trisodium salt).
It is further preferred that to feeding lime breast in desulfurization wastewater, adjusting the pH value of desulfurization wastewater to 9.5-10.
Preferably, the chemical precipitation also includes adding flocculant and flocculation aid in desulfurization wastewater, makes the suspension in water
The step of thing becomes floccule and is easy to precipitation.
Preferably, the method for the regulating water quality, comprises the steps：Hydrochloric acid is added in the desulfurization wastewater after clarification,
The pH value for adjusting desulfurization wastewater is 6-9, and to aeration in desulfurization wastewater, balanced water quality, and reduce the COD in desulfurization wastewater.
It is further preferred that the air water volume ratio of the aeration is 15-20:1.
The beneficial effects of the utility model are：
1st, sedimentation tank equilibrium water quality is adjusted, it is to avoid the variation water quality larger subsequent treatment effect for causing is unstable.Will be de-
The original float of sulfur waste water and reaction generate precipitation separately precipitate, reduce desulfurization wastewater three headers gravity flow during containing
Gu amount, it is to avoid blocking.Three header bottoms are provided with spoil disposal pipeline, can be prevented effectively from the dirty stifled phenomenon of body partial.
2nd, by changing order of addition of ingredients, change the property of heavy metal precipitation thing so as to when can return desulphurization system not by
Again dissolve.
3rd, clarify pond is carried out simultaneously using aeration mode equilibrium water quality, balanced water quality and reduction COD, reduces cost of investment
And operating cost.
4th, the sludge in desulfurization wastewater processing procedure realizes complete-reclaiming, it is to avoid sludge as the useless expense disposed of danger,
Operating cost is reduced, changing waste into resources utilization is realized.
Description of the drawings
Fig. 1 is desulfurization wastewater process chart of the present utility model
Wherein：1st, sedimentation tank is adjusted, 2, elevator pump, 3, organic sulfur chemicals dosing plant, 4, reaction chamber, 5, reaction box mixer,
6th, Calx chemicals dosing plant, 7, neutralization box mixer, 8, neutralization case, 9, flocculant chemicals dosing plant, 10, flocculation sediment box mixer,
11st, flocculation tanks, 12, flocculation aid chemicals dosing plant, 13, defecator, 14, hydrochloric acid chemicals dosing plant, 15, clear water reserviors, 16, aerator, 17,
Aeration fan, 18, sludge pump, 19, sludge storage pool agitator, 20, sludge storage pool, 21, sludge reuse pump, 22, desulfurizing tower, 23,
Resin softening plant, 24, reverse osmosis unit, 25, vaporizer.
Specific embodiment
With reference to the accompanying drawing in this utility model example, the technical scheme in this utility model embodiment is carried out clearly
Except, be fully described by, it is clear that described embodiment is only a part of embodiment of this utility model, rather than the reality of whole
Apply example.Based on the embodiment in this utility model, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of this utility model protection.
This utility model is described in further detail below in conjunction with drawings and Examples, its concrete technology is as follows：
(1) desulfurization wastewater that desulphurization system is discharged is entered and adjusts sedimentation tank 1, is balanced water quality, it is to avoid variation water quality is larger,
Hydraulic detention time should be greater than 6h.Solid suspension enters bucket due to action of gravity precipitation, and the sludge in bucket is by sludge pump
18 deliver to sludge storage pool 20, and sludge pump 18 is screw pump, and pump material is dual phase steel, wear-resisting and anti-chlorine ion corrosion.
(2) adjust the boosted pump 2 of the supernatant of sedimentation tank 1 and deliver to reaction chamber 4, by organic sulfur chemicals dosing plant 3 to reaction
Organic sulfur is added in case, the heavy metal ion in water is precipitated.
(3) the water outlet gravity flow of reaction chamber 4 enters neutralization case 8, and Calx is added in neutralization case 8 by Calx chemicals dosing plant 6
Breast, by desulfurization wastewater pH 9.5～10 are adjusted to, and neutralize the acid and bicarbonate radical of desulfurization wastewater, remove magnesium ion, reduce the hard of water
Degree.For detecting that the sensor of water pH should be located at the bottom of water inlet, the change of water quality pH is monitored more in time.Neutralization medicament is preferential
From the lime cream of 10% concentration, when sulfate concentration is less than 2000mg/L in desulfurization wastewater, can be made from sodium hydroxide
To neutralize medicament.
(4) the water outlet gravity flow for neutralizing case 8 enters flocculation tanks 11, by flocculant chemicals dosing plant 9 and flocculation aid chemicals dosing plant
12 are separately added into flocculant chloro sulphuric acid ferrum and flocculation aid polyacrylamide in flocculation tanks 11, make the float in water become wadding
Shape thing and be easy to precipitation, be easy to the solid-liquid separation of water and sludge.The dosing mouth of flocculant should be near water inlet position, flocculation aid
Dosing mouth is located at the centre position of flocculation tanks 11.
(5) the water outlet gravity flow of flocculation tanks 11 enters defecator 13, and defecator 13 utilizes sedimentation theory, suspended substance sedimentation
Into bucket, the sludge in bucket delivers to sludge storage pool 20 by sludge pump 18.Primary water exits into clear water from downflow weir around
Pond 15.The hydraulic detention time of defecator 13 is advisable with 2～4h, is easy to sludge fully to settle, and bottom is provided with spoil disposal pipeline.
(6) import of clear water reserviors 15 connects hydrochloric acid chemicals dosing plant 14, and water quality pH is adjusted to into 6～9.The bottom of clear water reserviors 15 is provided with
Aerator 16, by the aeration of Aeration fan 17 COD of desulfurization wastewater is reduced, and aeration can be with balanced water quality, it is to avoid local pH is too high
Or it is too low.Hydrochloric acid dosing mouth is used to detect that the sensor of water pH should to be located at the bottom of water inlet in water inlet, depositing reservoir 15,
The change of water quality pH is monitored more in time.The hydraulic detention time of clear water reserviors 15 is advisable with 2～4h, and gas-water ratio is 15:1, it is easy to COD
It is substantially oxidized.Clear water reserviors water outlet is concentrated Jing after the softening of resin softening plant 23 into reverse osmosis unit 24, finally enters evaporation
The evaporative crystallization of device 25, finally distills Water circulation, and process is sold outside crystal salt.
(7) sewage sludge storage pond agitator 19 is installed in sludge storage pool 20, it is to avoid sludge settling.Sludge main component is
Calcium sulfate and calcium hydroxide, magnesium hydroxide, the reuse of sludge reuse pump 21 is passed through to desulfurizing tower 22, sludge using sludge as desulfurizing agent
Reuse pump 21 selects screw pump.
Wherein reaction chamber 4, neutralization case 8, flocculation tanks 11 are respectively provided with reaction box mixer 5, neutralization box mixer 7, flocculation
Box mixer 10；The reaction chamber 4, neutralization case 8, the bottom of flocculation tanks 11 are connected by pipeline with the import of sludge pump 18.Keep away
Exempt from sludge to accumulate in a large number in box bottom, affect the gravity flow of water.
Wherein sludge storage pool 20 is furnished with sludge storage pool agitator 19, stir speed (S.S.) 80r/min.Sludge reuse pump 21 is by sludge
To desulfurizing tower 22, sludge reuse pump 21 selects screw pump to sludge reflux in reservoir 20.
By taking a Practical Project as an example, the power plant desulfurization waste water water yield is 10t/h, and watery part parameter is as follows：PH 5.5,
COD280mg/L, sulfate 8940mg/L, calcium 1450mg/L, magnesium 6211mg/L, ferrum 6.38mg/L, zinc 1.02mg/L, arsenic
5.70mg/L, hydrargyrum 4.61mg/L, cadmium 0.16mg/L, lead trace, nickel 1.99mg/L, chromium 4.33mg/L.
Waste water initially enters regulation sedimentation tank, and Jing after 6h precipitation process, sludge enters sludge storage pool, and supernatant is sequentially passed through
Reaction chamber, neutralization case, flocculation tanks, by adding organic sulfur precipitation of heavy metals ion, add lime cream to adjust pH to 9.6 or so, plus
Entering flocculant and flocculation aid makes mud granule become big beneficial to precipitation.Heavy metal precipitation in water be organo-metallic compound, sulphuric acid
Salt and magnesium ion generate calcium sulfate and magnesium hydrate precipitate, and flocculation tanks water outlet enters defecator, and due to action of gravity, sludge is entered
Bucket, eventually enters into sludge storage pool, and the sludge in sludge storage pool eventually serves as desulfurizing agent and is back to desulphurization system.
Clean water overflow enters clear water reserviors, and by adding hydrochloric acid pH to 6～9 is adjusted, and waste water COD is down to into 60 by aeration effect
Within, gas-water ratio is 15：1.Clear water reserviors water outlet enters reverse osmosis membrane concentration+evaporation and crystallization system Jing after resin softening, final to steam
Distilled water reuse, sells process outside crystal salt.
The organic sulfur content for entirely adding the more conventional technique of desulfurization wastewater processing procedure is 53mg/L more, and organic sulfur is with unit price
8000 yuan/t is counted, the organic sulfur added more conventional technique 4.24 yuan/h of total RMB more.During reuse sludge quantity be 0.2t/
Process is sold outside h, such as sludge, based on 2000 yuan/t of handling, 400 yuan/h of processing cost is needed.It can be seen that, method Jing of the present utility model
Ji benefit is fairly obvious, and will not be to environment.
Although the above-mentioned accompanying drawing that combines is described to specific embodiment of the present utility model, not to utility model
The restriction of protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, this area
Various modifications or deform still in protection domain of the present utility model that technical staff makes by need not paying creative work
It is interior.
Claims (5)
1. a kind of desulfurization wastewater zero-discharge treatment system of sludge reuse, it is characterised in that：Including the regulation precipitation being sequentially connected
Pond, three headers, defecator and filtered water tank, adjust sedimentation tank and connect with waste water source；
Three header includes reaction chamber, neutralization case and the flocculation tanks being sequentially connected, and reaction chamber is connected with the regulation sedimentation tank,
Flocculation tanks are connected with the defecator；The reaction chamber is connected with organic sulfur chemicals dosing plant；
The bottom for adjusting sedimentation tank, three headers and defecator is all connected by pipeline with sludge storage pool, and the first pump is provided
Power of the sludge in pipeline flow；
Sludge storage pool is connected by pipeline with desulfurizing tower, and the second pump provides the power of sludge flowing, is sprayed sludge as desulfurizing agent
Entering desulfurizing tower carries out desulfurization.
2. processing system according to claim 1, it is characterised in that：The bottom of the filtered water tank is provided with aerator, exposes
Gas device is connected with the Aeration fan being arranged on the outside of filtered water tank.
3. processing system according to claim 1, it is characterised in that：The filtered water tank is connected with hydrochloric acid chemicals dosing plant.
4. processing system according to claim 1, it is characterised in that：Agitator is provided with the sludge storage pool.
5. processing system according to claim 1, it is characterised in that：The bottom of sedimentation tank and defecator that adjusts is for cone
Shape, the least significant end of conical lower portion is connected by pipeline with sludge storage pool.
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| CN201621189740.5U CN206127046U (en) | 2016-11-04 | 2016-11-04 | Desulfurization waste water zero release processing system of mud retrieval and utilization |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430781A (en) * | 2016-11-04 | 2017-02-22 | 山东山大华特环保工程有限公司 | Desulfurization system with zerowastewater emission and reusable slurry and treatment method thereof |
| CN108706762A (en) * | 2018-04-27 | 2018-10-26 | 高星 | A kind of desulfuration waste water treatment process and equipment |
| CN111186928A (en) * | 2018-11-15 | 2020-05-22 | 魏县聚银环保科技有限公司 | Industrial waste water is with desulfurization softening treatment device |
-
2016
- 2016-11-04 CN CN201621189740.5U patent/CN206127046U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430781A (en) * | 2016-11-04 | 2017-02-22 | 山东山大华特环保工程有限公司 | Desulfurization system with zerowastewater emission and reusable slurry and treatment method thereof |
| CN108706762A (en) * | 2018-04-27 | 2018-10-26 | 高星 | A kind of desulfuration waste water treatment process and equipment |
| CN111186928A (en) * | 2018-11-15 | 2020-05-22 | 魏县聚银环保科技有限公司 | Industrial waste water is with desulfurization softening treatment device |
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