CN209081585U - The system that arsenic drops with brine in the cultivation of salt algae - Google Patents
The system that arsenic drops with brine in the cultivation of salt algae Download PDFInfo
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- CN209081585U CN209081585U CN201821484571.7U CN201821484571U CN209081585U CN 209081585 U CN209081585 U CN 209081585U CN 201821484571 U CN201821484571 U CN 201821484571U CN 209081585 U CN209081585 U CN 209081585U
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Abstract
The utility model discloses a kind of salt algae cultivation systems of brine drop arsenic comprising ferric trichloride storage tank, calcium hydroxide solution preparation system, calcium carbonate serosity preparation system and stir process pond.The advantages of the utility model: the arsenic element in brine containing arsenic is separated after the processing of once oxidation, secondary oxidation and flocculation sedimentation, achieve the purpose that reduce brine arsenic content, brine arsenic content is reduced to 0.004mg/L or less, arsenic significant effect drops, arsenic content is reduced to 3.0mg/kg hereinafter, improving salt algae powder product quality to the salt algae cultivated using it in the salt algae powder of output after harvesting, processing；While carrying out drop arsenic processing to brine, concern brine changes the influence cultivated to salt algae, it can be ensured that salt algae quality and yield does not reduce；By rationally designing processing system, so that drop arsenic processing can be carried out orderly.
Description
Technical field:
The utility model relates to a kind of salt algaes to cultivate field, the in particular to system that arsenic drops with brine in a kind of salt algae cultivation.
Background technique:
Salt algae, also referred to as Dunaliella salina (Dunaliella), for green single-cell algae, body is small, cell-free wall, has sugar
The coating that albumen is formed, is mainly distributed on offshore waters, can survive in the environment close to fresh water up to saturated brine, especially can
The vigorous growth in water body with high salt is presently found unique peculiar life that can be survived in high concentration salt water.
Salt algae is generally centrifuged, be spray-dried and etc. salt algae powder be made sold, as country is to food matter
Amount requires higher and higher, and the quality requirement of salt algae Related product is also improving, and the quality problem major embodiment of salt algae powder at present
Excessively high in arsenic content, arsenic is a kind of metalloid element, is a kind of very strong substance of toxicity, arsenic enters in human body be absorbed after, meeting
The redox ability for destroying cell, influences cell eubolism, causes histologic lesion and body obstacle.Salt algae powder arsenic content mistake
The main reason for high, is, under current salt algae cultivating condition, due to fuel oil mechanical a wide range of use, vehicle exhaust, industrial waste gas
The reasons such as discharge, cultivate arsenic content in natural bittern used in salt algae and constantly increase, since salt algae has absorption to make in heavy metal
Growth characteristics directly affect the quality of salt algae powder product so that arsenic content is excessively high in salt algae.Therefore, how by changing
Become the arsenic content in cultivating condition reduction salt algae, becomes a urgent problem to be solved.
Utility model content:
It cultivates and uses the purpose of this utility model is to provide the salt algae of a kind of reduction salt algae arsenic content, raising salt algae powder quality
The system of brine drop arsenic.
The utility model is implemented by following technical solution: the system of salt algae cultivation brine drop arsenic comprising at least one
Grade processing system, the processing system include ferric trichloride storage tank, calcium hydroxide solution preparation system, calcium carbonate serosity preparation system
System and stir process pond, the outlet of the discharge nozzle of the ferric trichloride storage tank are placed in the stir process pond, the hydroxide
The purified liquor outlet of the calcium oxide stirring pool of calcium solution preparation system is connect by clear liquid pump with the stir process pond, the carbonic acid
The outlet of the calcium carbonate stirring pool of calcium serum producing system is connect by delivery pump with the stir process pond.
Further, the calcium hydroxide solution preparation system includes the calcium oxide stirring pool, calcium oxide storage tank and
One solvent tank, the outlet of the feeder pipe of the calcium oxide storage tank are placed in the calcium oxide stirring pool, the first solvent storage
Tank is connect by first flow valve with the calcium oxide stirring pool, and the feeder pipe above the calcium oxide stirring pool is equipped with
The blender of second weighing machine, the calcium oxide stirring pool is equipped with the second timer.
Further, the calcium carbonate serosity preparation system includes the calcium carbonate stirring pool, calcium carbonate storage tank and second
Solvent tank, the outlet of the discharge duct of the calcium carbonate storage tank are placed in the calcium carbonate stirring pool, and second solvent tank is logical
It crosses second flow valve to connect with the calcium carbonate stirring pool, the discharge duct above the calcium carbonate stirring pool is equipped with third
The blender of weighing machine, the calcium carbonate stirring pool is equipped with third timer.
Further, the discharge nozzle of the ferric trichloride storage tank above the stir process pond is equipped with the first meter
The blender of treasure, the stir process pond is equipped with the first timer.
Further, the processing system its further include having controller and arsenic content detector, the arsenic content detector
Signal output end connect with the signal input part signal of the controller, the signal output end of the controller respectively with it is described
First weighing machine, second weighing machine, the third weighing machine, first timer, second timer, described
The signal input part signal connection of three timers, the first flow valve, the second flow valve.
Further, the arsenic content detector is Atomic Fluorescence Spectrometer.
Further, when the processing system is two-stage or two-stage or more, the institute of processing system described in every adjacent higher level
Stir process pond is stated to connect by clear liquid vacuum pump with the stir process pond of processing system described in junior.
The advantages of the utility model: 1, the arsenic element in brine containing arsenic through once oxidation, secondary oxidation and flocculation sedimentation at
It is separated after reason, achievees the purpose that reduce brine arsenic content, brine arsenic content is reduced to 0.004mg/L hereinafter, drop arsenic effect
Fruit is significant, using its cultivation salt algae after harvesting, processing in the salt algae powder of output arsenic content be reduced to 3.0mg/kg hereinafter,
Improve salt algae powder product quality；2, while carrying out drop arsenic processing to brine, concern brine changes the shadow cultivated to salt algae
It rings, the common oxidant such as selection hydrogen peroxide, polyacrylamide and flocculant is avoided in drop arsenic processing, eliminate because at brine drop arsenic
Reason, which is introduced into, to be unfavorable for the substance of salt algae cultivation and enters in brine, utilizes treated brine cultivation salt algae, it can be ensured that salt algae product
Matter and yield do not reduce；3, by rationally designing processing system, so that drop arsenic processing can be carried out orderly, high degree of automation,
Production efficiency and stability are improved, labor intensity and cost of labor are reduced.
Detailed description of the invention:
Fig. 1 is the overall structure diagram of embodiment 1.
Fig. 2 is the overall structure diagram of embodiment 2.
Fig. 3 is control principle drawing.
Processing system 1, ferric trichloride storage tank 2, the first weighing machine 2-1, calcium hydroxide solution preparation system 3, calcium oxide stirs
Pond 3-1, calcium oxide storage tank 3-2, feeder pipe 3-3, the first solvent tank 3-4, first flow valve 3-5, the second weighing machine 3-6 are mixed,
Second timer 3-7, calcium carbonate serosity preparation system 4, calcium carbonate stirring pool 4-1, calcium carbonate storage tank 4-2, discharge duct 4-3, the
Two solvent tank 4-4, second flow valve 4-5, third weighing machine 4-6, third timer 4-7, stir process pond 5, clear liquid pump 6 are defeated
Send pump 7, the first timer 8, controller 9, clear liquid vacuum pump 10, arsenic content detector 11.
Specific embodiment:
Embodiment 1:
As shown in Figure 1,3, the system of arsenic drops with brine in the cultivation of salt algae comprising processing system 1, processing system 1 include three
Iron chloride storage tank 2, calcium hydroxide solution preparation system 3, calcium carbonate serosity preparation system 4 and stir process pond 5, ferric trichloride storage
Tank 2 is for storing ferric trichloride solid, the calcium hydroxide solution that calcium hydroxide solution preparation system 3 is used to prepare, and according to being
System demand accurately controls the concentration of calcium hydroxide solution；Calcium carbonate serosity preparation system 4, which is used to prepare, meets system requirement
The calcium carbonate serosity of concentration and according to system requirements, accurately controls the concentration of calcium carbonate serosity；Stir process pond 5 is the cultivation of salt algae
Suitable reaction compartment and condition are provided with the drop arsenic processing of brine.
Calcium hydroxide solution preparation system 3 includes calcium oxide stirring pool 3-1, calcium oxide storage tank 3-2 and the first solvent tank
3-4, the outlet of the feeder pipe 3-3 of calcium oxide storage tank 3-2 are placed in calcium oxide stirring pool 3-1, and the first solvent tank 3-4 passes through the
One flow valve 3-5 is connect with calcium oxide stirring pool 3-1, and the feeder pipe 3-3 above calcium oxide stirring pool 3-1 is equipped with the second weight calculation
The blender of device 3-6, calcium oxide stirring pool 3-1 are equipped with the second timer 3-7.
Calcium carbonate serosity preparation system 4 includes calcium carbonate stirring pool 4-1, calcium carbonate storage tank 4-2 and the second solvent tank 4-4,
The outlet of the discharge duct 4-3 of calcium carbonate storage tank 4-2 is placed in calcium carbonate stirring pool 4-1, and the second solvent tank passes through second flow
Valve 4-5 is connect with calcium carbonate stirring pool 4-1, and the discharge duct 4-3 above calcium carbonate stirring pool 4-1 is equipped with third weighing machine 4-
The blender of 6, calcium carbonate stirring pool 4-1 are equipped with third timer 4-7.
The outlet of the discharge nozzle of ferric trichloride storage tank 2 is placed in stir process pond 5, calcium hydroxide solution preparation system 3
The purified liquor outlet of calcium oxide stirring pool 3-1 is connect by clear liquid pump 6 with stir process pond 5, the carbon of calcium carbonate serosity preparation system 4
The outlet of sour calcium stirring pool 4-1 is connect by delivery pump 7 with stir process pond 5；The ferric trichloride storage tank of 5 top of stir process pond
2 discharge nozzle is equipped with the first weighing machine 2-1, and the blender in stir process pond 5 is equipped with the first timer 8.
Processing system 1 further includes having controller 9 and arsenic content detector 11, in the present embodiment, arsenic content detector 11
Specially Atomic Fluorescence Spectrometer, the signal output end of arsenic content detector 11 are connect with the signal input part signal of controller 9,
The signal output end of controller 9 respectively with the first weighing machine 2-1, the second weighing machine 3-6, third weighing machine 4-6, the first timer
8, the signal input part signal company of the second timer 3-7, third timer 4-7, first flow valve 3-5, second flow valve 4-5
It connects.
The course of work:
The cultivation of salt algae is detected with brine arsenic content by arsenic content detector 11, according to salt algae cultivation brine arsenic
Content calculates ferric trichloride dosage, calcium hydroxide solution concentration and dosage, calcium carbonate serosity concentration and dosage, then by hydroxide
Calcium solution concentration and dosage are changed into calcium oxide solid dosage and solvent usage, calcium carbonate serosity concentration and dosage are changed into carbon
Sour calcium solid dosage and solvent usage, by ferric trichloride dosage, calcium oxide solid dosage and solvent usage, calcium carbonate solid dosage
The first weighing machine 2-1, the second weighing machine 3-6, first flow valve 3-5, the are sent respectively to by controller 9 with solvent usage
Three weighing machine 4-6, second flow valve 4-5；Meanwhile according to calcium hydroxide solution, calcium carbonate serosity dissolution requirement and stir process
The reaction requirement in pond 5 sends meter to the first timer 8, the second timer 3-7, third timer 4-7 respectively by controller 9
When signal.
First weighing machine 2-1 is opened after receiving signal, and iron chloride, while the first timing are added into stir process pond 5
Device 8 receives signal and starts, and is stirred to the substance in stir process pond 5, makes salt algae cultivation brine and ferric trichloride
Solid is reacted；At the same time, the second weighing machine 3-6, first flow valve 3-5, third weighing machine 4-6, second flow valve 4-5
Start after receiving signal, calcium hydroxide solution preparation system 3 and calcium carbonate serosity preparation system 4 prepare calcium hydroxide respectively
Solution and calcium carbonate serosity, the arsenic in ferric trichloride and salt algae cultivation brine obtain single treatment liquid after the reaction was completed；To
Calcium hydroxide solution is added in single treatment liquid, stirs, obtains secondary treatment liquid；Calcium carbonate slurry will be added in secondary treatment liquid
Liquid, stirring stand clarification later, and obtained supernatant is to drop arsenic brine, and dropping arsenic content in arsenic brine can will decrease to
0.004mg/L is hereinafter, drop arsenic significant effect.
Embodiment 2:
As shown in Figure 2,3, the system of arsenic drops with brine in the cultivation of salt algae comprising processing system 1, processing system 1 are two
Grade, the stir process pond 5 of adjacent higher level's processing system 1 pass through the stir process of clear liquid vacuum pump 10 and junior's processing system 1
Pond 5 connects.
The processing system 1 of every level-one includes ferric trichloride storage tank 2, calcium hydroxide solution preparation system 3, calcium carbonate serosity system
Standby system 4 and stir process pond 5, ferric trichloride storage tank 2 is for storing ferric trichloride solid, calcium hydroxide solution preparation system 3
The calcium hydroxide solution being used to prepare, and according to system requirements, accurately control the concentration of calcium hydroxide solution；Calcium carbonate serosity system
Standby system 4 is used to prepare the calcium carbonate serosity for meeting system requirement concentration and according to system requirements, accurately controls calcium carbonate
The concentration of slurries；Stir process pond 5 provides suitable reaction compartment and condition for the drop arsenic processing of salt algae cultivation brine.
Calcium hydroxide solution preparation system 3 includes calcium oxide stirring pool 3-1, calcium oxide storage tank 3-2 and the first solvent tank
3-4, the outlet of the feeder pipe 3-3 of calcium oxide storage tank 3-2 are placed in calcium oxide stirring pool 3-1, and the first solvent tank 3-4 passes through the
One flow valve 3-5 is connect with calcium oxide stirring pool 3-1, and the feeder pipe 3-3 above calcium oxide stirring pool 3-1 is equipped with the second weight calculation
The blender of device 3-6, calcium oxide stirring pool 3-1 are equipped with the second timer 3-7.
Calcium carbonate serosity preparation system 4 includes calcium carbonate stirring pool 4-1, calcium carbonate storage tank 4-2 and the second solvent tank 4-4,
The outlet of the discharge duct 4-3 of calcium carbonate storage tank 4-2 is placed in calcium carbonate stirring pool 4-1, and the second solvent tank passes through second flow
Valve 4-5 is connect with calcium carbonate stirring pool 4-1, and the discharge duct 4-3 above calcium carbonate stirring pool 4-1 is equipped with third weighing machine 4-
The blender of 6, calcium carbonate stirring pool 4-1 are equipped with third timer 4-7.
The outlet of the discharge nozzle of ferric trichloride storage tank 2 is placed in stir process pond 5, calcium hydroxide solution preparation system 3
The purified liquor outlet of calcium oxide stirring pool 3-1 is connect by clear liquid pump 6 with stir process pond 5, the carbon of calcium carbonate serosity preparation system 4
The outlet of sour calcium stirring pool 4-1 is connect by delivery pump 7 with stir process pond 5；The ferric trichloride storage tank of 5 top of stir process pond
2 discharge nozzle is equipped with the first weighing machine 2-1, and the blender in stir process pond 5 is equipped with the first timer 8.
Processing system 1 further include have controller 9 and with arsenic content detector 11, in the present embodiment, arsenic content detector
11 be specially Atomic Fluorescence Spectrometer, and the signal output end of arsenic content detector 11 and the signal input part signal of controller 9 connect
It connects, the signal output end of controller 9 is counted with the first weighing machine 2-1, the second weighing machine 3-6, third weighing machine 4-6, first respectively
When device 8, the second timer 3-7, third timer 4-7, first flow valve 3-5, second flow valve 4-5 signal input part signal
Connection.
The course of work:
Enter the brine to be processed of first order processing system 1 by 11 pairs of arsenic content detector of first order processing system 1
Arsenic content is detected, according to the cultivation of salt algae with brine arsenic content calculate ferric trichloride dosage, calcium hydroxide solution concentration and
Dosage, calcium carbonate serosity concentration and dosage, then calcium hydroxide solution concentration and dosage are changed into calcium oxide solid dosage and molten
Calcium carbonate serosity concentration and dosage are changed into calcium carbonate solid dosage and solvent usage by agent dosage, by ferric trichloride dosage, oxygen
Change calcium solid dosage and solvent usage, calcium carbonate solid dosage and solvent usage and the first weight calculation is sent respectively to by controller 9
Device 2-1, the second weighing machine 3-6, first flow valve 3-5, third weighing machine 4-6, second flow valve 4-5；Meanwhile according to hydroxide
Calcium solution, calcium carbonate serosity dissolution require and the reaction in stir process pond 5 requirement, by controller 9 respectively to the first timer
8, the second timer 3-7, third timer 4-7 send timing signal.
First weighing machine 2-1 is opened after receiving signal, and iron chloride, while the first timing are added into stir process pond 5
Device 8 receives signal and starts, and is stirred to the substance in stir process pond 5, makes salt algae cultivation brine and ferric trichloride
Solid is reacted；At the same time, the second weighing machine 3-6, first flow valve 3-5, third weighing machine 4-6, second flow valve 4-5
Start after receiving signal, it is molten that calcium hydroxide solution preparation system 3 and calcium carbonate serosity preparation system 4 prepare iron oxide respectively
Liquid and calcium carbonate serosity, the arsenic in ferric trichloride and salt algae cultivation brine obtain single treatment liquid after the reaction was completed；Xiang Yi
Calcium hydroxide solution is added in secondary treatment fluid, stirs, obtains secondary treatment liquid；Calcium carbonate serosity will be added in secondary treatment liquid,
Stirring, stands clarification later, and obtained supernatant is to drop arsenic brine.
To be processed brine of the drop arsenic brine that coagulation system 1 obtains as secondary treatment system 1, and repeat above-mentioned mistake
Journey obtains the drop arsenic brine of secondary treatment system 1；The drop arsenic brine that secondary treatment system 1 obtains, the processing of secondary treatment system 1
Afterwards, the brine arsenic content of salt algae cultivation can be reduced to 0.004mg/L hereinafter, drop arsenic significant effect.
Embodiment 3:
The method that arsenic drops with brine in the salt algae cultivation carried out using 1 system of embodiment comprising following steps:
1) pre-oxidation precipitating: to addition ferric trichloride solid, the matter of brine containing arsenic and ferric trichloride solid in brine containing arsenic
Amount stirs 5h, obtains single treatment liquid than being 5000:1；Ferric trichloride solid is soluble in water, forms ferric ion and hydrogen-oxygen
Change iron, ferric ion by the trivalent arsenic ionic oxide formation in brine at pentavalent arsenic ion, deposited in the form of arsenate by pentavalent arsenic ion
, precipitated ferric arsenate is formed with ferric ion, meanwhile, the iron hydroxide in water exists in colloidal form, and aggregation is wadded a quilt with cotton
Solidifying effect, ferric arsenate is adsorbed and is precipitated；
2) it prepares calcium hydroxide solution: calcium oxide solid being taken to be placed in water abundant dissolution, the quality of calcium oxide solid and water
Than staticly settling 0.5h for 1:200, taking supernatant is calcium hydroxide solution；Configuration calcium hydroxide solution is that operation is done in next step
Prepare, the calcium hydroxide solution configured by this step, concentration is suitable for, it can be ensured that operation is smooth in next step；
3) secondary precipitation: single treatment liquid is mixed with calcium hydroxide solution, and single treatment liquid and calcium hydroxide solution are mixed
Conjunction volume ratio is 2:1, stirs 1.5h, obtains secondary treatment liquid；It pre-oxidizes in precipitation process, the trivalent in not oxidized brine
Arsenic ion generates arsenic acid calcium precipitate with calcium hydroxide reaction, and secondary precipitation ensures that the arsenic ion in brine is precipitated down completely
Come, to achieve the purpose that reduce brine arsenic content；
4) it the preparation of calcium carbonate serosity: takes calcium carbonate solid to be added portionwise in agitator tank and is stirred with water, calcium carbonate is solid
The mass ratio of body and water is 1:20, obtains calcium carbonate serosity after mixing evenly；Configuration calcium carbonate serosity is that standard is done in operation in next step
It is standby；
5) accelerate flocculation sedimentation: secondary treatment liquid is mixed with calcium carbonate serosity, secondary treatment liquid and calcium carbonate serosity are mixed
Conjunction volume ratio is 20:1, carries out standing clarification after stirring 12h, gained supernatant is drop arsenic brine.Pre-oxidation precipitating and secondary heavy
During shallow lake, the sediment and flocculate of generation need thoroughly flocculation sedimentation get off by prolonged stand, for a long time
Staticly settle and seriously affect continuous production, therefore, calcium carbonate serosity is added and accelerates and promotes the progress of flocculation sedimentation；It is former
Reason are as follows: during flocculation sedimentation, the colloid and discrete particles of suspended matter generated under the interaction of molecular force flock and
They collide with each other cohesion in infall process, and size and quality constantly become larger, and settling velocity is continuously increased；And calcium carbonate serosity
In, calcium carbonate exists in the form of poly calcium carbonate, and poly calcium carbonate is as condensation nucleus, but flocculate depends on it agglomerates and increase
The quality for adding flocculate assists the progress of flocculation sedimentation, accelerates and promote flocculation sedimentation process, optimizes flocculation sedimentation effect, contracting
Short flocculation sedimentation process, is conducive to the maintenance of continuous production.
It takes salt algae to cultivate brine, it is divided into two parts in equal volume, a part is utilized without drop arsenic processing, another part
The present embodiment method carries out drop arsenic processing, and the salt algae solution for being respectively connected to same algae density to two parts brine is cultivated, salt
Algae solution is the same a batch of salt algae solution cultivated by production laboratory, the Hu of color depth, algae density and institute saliferous algae
Radish cellulose content is consistent.Under identical cultivating condition, final harvest salt algae yield, arsenic content are detected, by two parts
After salt algae powder is made by identical technique in harvest salt algae, the arsenic content of salt algae powder is detected, and testing result is as shown in table 1.
Table 1 drops arsenic and harvests salt algae yield, arsenic content, salt algae powder arsenic content testing result before and after the processing
As shown in Table 1, through present implementation processing salt algae cultivation brine after, salt algae cultivate brine arsenic content by
0.0093mg/L is reduced to 0.0032mg/L, and arsenic content reduced rate is 65.6%；Added using drop arsenic brine cultivation salt algae through harvesting
After work, salt algae powder arsenic content obtained is reduced to 2.55mg/kg by 4.98mg/kg, and arsenic content reduced rate is 48.8%；With not
It is compared through present implementation processing salt algae cultivation brine cultivation salt algae, the present embodiment drop arsenic brine obtained cultivates salt algae, salt algae
Yield reduces 0.8kg, and yield reduced rate is 2.5%, it is believed that cultivates salt algae using the present embodiment method drop arsenic brine obtained
It will not influence salt algae yield.
Embodiment 4:
The method that arsenic drops with brine in the salt algae cultivation carried out using 2 system of embodiment comprising following steps:
1) pre-oxidation precipitating: to addition ferric trichloride solid, the matter of brine containing arsenic and ferric trichloride solid in brine containing arsenic
Amount stirs 3h, obtains single treatment liquid than being 8000:1；Ferric trichloride solid is soluble in water, forms ferric ion and hydrogen-oxygen
Change iron, ferric ion by the trivalent arsenic ionic oxide formation in brine at pentavalent arsenic ion, deposited in the form of arsenate by pentavalent arsenic ion
, precipitated ferric arsenate is formed with ferric ion, meanwhile, the iron hydroxide in water exists in colloidal form, and aggregation is wadded a quilt with cotton
Solidifying effect, ferric arsenate is adsorbed and is precipitated；
2) it prepares calcium hydroxide solution: calcium oxide solid being taken to be placed in water abundant dissolution, the quality of calcium oxide solid and water
Than staticly settling 1h for 1:300, taking supernatant is calcium hydroxide solution；Configuration calcium hydroxide solution is that standard is done in operation in next step
It is standby；Configuration calcium hydroxide solution is that operation is prepared in next step, and the calcium hydroxide solution configured by this step, concentration is suitable,
It may insure to operate in next step smooth；
3) secondary precipitation: single treatment liquid is mixed with calcium hydroxide solution, and single treatment liquid and calcium hydroxide solution are mixed
Conjunction volume ratio is 3:1, stirs 2h, obtains secondary treatment liquid；It pre-oxidizes in precipitation process, the trivalent arsenic in not oxidized brine
Ion generates arsenic acid calcium precipitate with calcium hydroxide reaction, and secondary precipitation ensures that the arsenic ion in brine is precipitated completely,
To achieve the purpose that reduce brine arsenic content；
4) it the preparation of calcium carbonate serosity: takes calcium carbonate solid to be added portionwise in agitator tank and is stirred with water, calcium carbonate is solid
The mass ratio of body and water is 1:23, obtains calcium carbonate serosity after mixing evenly；Configuration calcium carbonate serosity is that standard is done in operation in next step
It is standby；
5) accelerate flocculation sedimentation: secondary treatment liquid is mixed with calcium carbonate serosity, secondary treatment liquid and calcium carbonate serosity are mixed
Conjunction volume ratio is 35:1, carries out standing clarification after stirring 18h, gained supernatant is drop arsenic brine.Pre-oxidation precipitating and secondary heavy
During shallow lake, the sediment and flocculate of generation need thoroughly flocculation sedimentation get off by prolonged stand, for a long time
Staticly settle and seriously affect continuous production, therefore, calcium carbonate serosity is added and accelerates and promotes the progress of flocculation sedimentation；It is former
Reason are as follows: during flocculation sedimentation, the colloid and discrete particles of suspended matter generated under the interaction of molecular force flock and
They collide with each other cohesion in infall process, and size and quality constantly become larger, and settling velocity is continuously increased；And calcium carbonate serosity
In, calcium carbonate exists in the form of poly calcium carbonate, and poly calcium carbonate is as condensation nucleus, but flocculate depends on it agglomerates and increase
The quality for adding flocculate assists the progress of flocculation sedimentation, accelerates and promote flocculation sedimentation process, optimizes flocculation sedimentation effect, contracting
Short flocculation sedimentation process, is conducive to the maintenance of continuous production.
1) pre-oxidation precipitates, 2) prepares calcium hydroxide solution, 3) secondary precipitation, 4) preparation of calcium carbonate serosity, 5) acceleration
Flocculation sedimentation successively carries out and circulation primary, and the upper resulting drop arsenic brine of a circulation is the halogen containing arsenic that subsequent cycle is handled
Water.
It takes salt algae to cultivate brine, it is divided into two parts in equal volume, a part is utilized without drop arsenic processing, another part
The present embodiment method carries out drop arsenic processing, and the salt algae solution for being respectively connected to same algae density to two parts brine is cultivated, salt
Algae solution is the same a batch of salt algae solution cultivated by production laboratory, the Hu of color depth, algae density and institute saliferous algae
Radish cellulose content is consistent.Under identical cultivating condition, final harvest salt algae yield, arsenic content are detected, by two parts
After salt algae powder is made by identical technique in harvest salt algae, the arsenic content of salt algae powder is detected, and testing result is as shown in table 2.
Table 2 drops arsenic and harvests salt algae yield, arsenic content, salt algae powder arsenic content testing result before and after the processing
As shown in Table 2, through present implementation processing salt algae cultivation brine after, salt algae cultivate brine arsenic content by
0.0104mg/L is reduced to 0.0029mg/L, and arsenic content reduced rate is 72.4%；Added using drop arsenic brine cultivation salt algae through harvesting
After work, salt algae powder arsenic content obtained is reduced to 1.23mg/kg by 4.65mg/kg, and arsenic content reduced rate is 73.5%；With not
It is compared through present implementation processing salt algae cultivation brine cultivation salt algae, the present embodiment drop arsenic brine obtained cultivates salt algae, salt algae
Yield reduces 0.3kg, and yield reduced rate is 0.9%, it is believed that cultivates salt algae using the present embodiment method drop arsenic brine obtained
It will not influence salt algae yield.
Embodiment 5:
The method that arsenic drops with brine in the salt algae cultivation carried out using 2 system of embodiment comprising following steps:
1) pre-oxidation precipitating: to addition ferric trichloride solid, the matter of brine containing arsenic and ferric trichloride solid in brine containing arsenic
Amount stirs 2h, obtains single treatment liquid than being 10000:1；Ferric trichloride solid is soluble in water, forms ferric ion and hydrogen-oxygen
Change iron, ferric ion by the trivalent arsenic ionic oxide formation in brine at pentavalent arsenic ion, deposited in the form of arsenate by pentavalent arsenic ion
, precipitated ferric arsenate is formed with ferric ion, meanwhile, the iron hydroxide in water exists in colloidal form, and aggregation is wadded a quilt with cotton
Solidifying effect, ferric arsenate is adsorbed and is precipitated；
2) it prepares calcium hydroxide solution: calcium oxide solid being taken to be placed in water abundant dissolution, the quality of calcium oxide solid and water
Than staticly settling 1.5h for 1:400, taking supernatant is calcium hydroxide solution；Configuration calcium hydroxide solution is that operation is done in next step
Prepare, the calcium hydroxide solution configured by this step, concentration is suitable for, it can be ensured that operation is smooth in next step；
3) secondary precipitation: single treatment liquid is mixed with calcium hydroxide solution, and single treatment liquid and calcium hydroxide solution are mixed
Conjunction volume ratio is 5:1, stirs 3.0h, obtains secondary treatment liquid；It pre-oxidizes in precipitation process, the trivalent in not oxidized brine
Arsenic ion generates arsenic acid calcium precipitate with calcium hydroxide reaction, and secondary precipitation ensures that the arsenic ion in brine is precipitated down completely
Come, to achieve the purpose that reduce brine arsenic content；
4) it the preparation of calcium carbonate serosity: takes calcium carbonate solid to be added portionwise in agitator tank and is stirred with water, calcium carbonate is solid
The mass ratio of body and water is 1:25, obtains calcium carbonate serosity after mixing evenly；Configuration calcium carbonate serosity is that standard is done in operation in next step
It is standby；
5) accelerate flocculation sedimentation: secondary treatment liquid is mixed with calcium carbonate serosity, secondary treatment liquid and calcium carbonate serosity are mixed
Conjunction volume ratio is 50:1, and stirring carries out standing clarification afterwards for 24 hours, and gained supernatant is drop arsenic brine.Pre-oxidation precipitating and secondary heavy
During shallow lake, the sediment and flocculate of generation need thoroughly flocculation sedimentation get off by prolonged stand, for a long time
Staticly settle and seriously affect continuous production, therefore, calcium carbonate serosity is added and accelerates and promotes the progress of flocculation sedimentation；It is former
Reason are as follows: during flocculation sedimentation, the colloid and discrete particles of suspended matter generated under the interaction of molecular force flock and
They collide with each other cohesion in infall process, and size and quality constantly become larger, and settling velocity is continuously increased；And calcium carbonate serosity
In, calcium carbonate exists in the form of poly calcium carbonate, and poly calcium carbonate is as condensation nucleus, but flocculate depends on it agglomerates and increase
The quality for adding flocculate assists the progress of flocculation sedimentation, accelerates and promote flocculation sedimentation process, optimizes flocculation sedimentation effect, contracting
Short flocculation sedimentation process, is conducive to the maintenance of continuous production.
2) above-mentioned 1) pre-oxidation precipitating prepares calcium hydroxide solution, 3) secondary precipitation, 4) preparation of calcium carbonate serosity, 5)
Acceleration flocculation sedimentation successively carries out and circulation primary, and the upper resulting drop arsenic brine of a circulation contains arsenic for what subsequent cycle was handled
Brine.
It takes salt algae to cultivate brine, it is divided into two parts in equal volume, a part is utilized without drop arsenic processing, another part
The present embodiment method carries out drop arsenic processing, and the salt algae solution for being respectively connected to same algae density to two parts brine is cultivated, salt
Algae solution is the same a batch of salt algae solution cultivated by production laboratory, the Hu of color depth, algae density and institute saliferous algae
Radish cellulose content is consistent.Under identical cultivating condition, final harvest salt algae yield, arsenic content are detected, by two parts
After salt algae powder is made by identical technique in harvest salt algae, the arsenic content of salt algae powder is detected, and testing result is as shown in table 3.
Table 3 drops arsenic and harvests salt algae yield, arsenic content, salt algae powder arsenic content testing result before and after the processing
As shown in Table 3, through present implementation processing salt algae cultivation brine after, salt algae cultivate brine arsenic content by
0.0098mg/L is reduced to 0.0030mg/L, and arsenic content reduced rate is 69.4%；Added using drop arsenic brine cultivation salt algae through harvesting
After work, salt algae powder arsenic content obtained is reduced to 2.46mg/kg by 6.33mg/kg, and arsenic content reduced rate is 61.1%；With not
It is compared through present implementation processing salt algae cultivation brine cultivation salt algae, the present embodiment drop arsenic brine obtained cultivates salt algae, salt algae
Yield reduces 0.7kg, and yield reduced rate is 2.2%, it is believed that cultivates salt algae using the present embodiment method drop arsenic brine obtained
It will not influence salt algae yield.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. the system that arsenic drops with brine in the cultivation of salt algae, which is characterized in that it includes at least one level processing system, the processing system
Including ferric trichloride storage tank, calcium hydroxide solution preparation system, calcium carbonate serosity preparation system and stir process pond, the trichlorine
The outlet for changing the discharge nozzle of iron storage tank is placed in the stir process pond, and the calcium oxide of the calcium hydroxide solution preparation system stirs
The purified liquor outlet for mixing pond is connect by clear liquid pump with the stir process pond, and the calcium carbonate of the calcium carbonate serosity preparation system stirs
The outlet for mixing pond is connect by delivery pump with the stir process pond.
2. the system that arsenic drops with brine in salt algae cultivation according to claim 1, which is characterized in that the calcium hydroxide solution
Preparation system includes the calcium oxide stirring pool, calcium oxide storage tank and the first solvent tank, the feeder pipe of the calcium oxide storage tank
Outlet be placed in the calcium oxide stirring pool, first solvent tank passes through first flow valve and the calcium oxide stirring pool
It connects, the feeder pipe above the calcium oxide stirring pool is equipped with the second weighing machine, the stirring of the calcium oxide stirring pool
Device is equipped with the second timer.
3. the system that arsenic drops with brine in salt algae cultivation according to claim 2, which is characterized in that the calcium carbonate serosity system
Standby system includes the calcium carbonate stirring pool, calcium carbonate storage tank and the second solvent tank, and the discharge duct of the calcium carbonate storage tank goes out
Mouth is placed in the calcium carbonate stirring pool, and second solvent tank is connected by second flow valve and the calcium carbonate stirring pool
It connects, the discharge duct above the calcium carbonate stirring pool is equipped with third weighing machine, the blender of the calcium carbonate stirring pool
It is equipped with third timer.
4. the system that arsenic drops with brine in salt algae cultivation according to claim 3, which is characterized in that on the stir process pond
The discharge nozzle of the ferric trichloride storage tank of side is equipped with the first weighing machine, and the blender in the stir process pond is equipped with
First timer.
5. salt algae cultivation according to claim 4 with brine drop arsenic system, which is characterized in that the processing system its also
It include controller and arsenic content detector, the signal output end of the arsenic content detector and the signal of the controller input
End signal connection, the signal output end of the controller respectively with first weighing machine, second weighing machine, the third
Weighing machine, first timer, second timer, the third timer, the first flow valve, the second
Measure the signal input part signal connection of valve.
6. the system that arsenic drops with brine in salt algae cultivation according to claim 5, which is characterized in that the arsenic content detector
For Atomic Fluorescence Spectrometer.
7. the system of arsenic drops with brine in -6 any salt algae cultivation according to claim 1, which is characterized in that when the processing
System is two-stage or two-stage or more, per adjacent higher level described in processing system the stir process pond by clear liquid vacuum pump with
The stir process pond of processing system described in junior connects.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066042A (en) * | 2018-09-11 | 2019-07-30 | 内蒙古兰太药业有限责任公司 | The method and system of arsenic drop with brine in the cultivation of salt algae |
| CN111676141A (en) * | 2020-06-22 | 2020-09-18 | 天津科技大学 | Method for removing heavy metal arsenic in dunaliella salina |
| CN114617090A (en) * | 2022-02-22 | 2022-06-14 | 潍坊科技学院 | Penaeus vannamei boone culture mineral composition, preparation method and application |
-
2018
- 2018-09-11 CN CN201821484571.7U patent/CN209081585U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066042A (en) * | 2018-09-11 | 2019-07-30 | 内蒙古兰太药业有限责任公司 | The method and system of arsenic drop with brine in the cultivation of salt algae |
| CN111676141A (en) * | 2020-06-22 | 2020-09-18 | 天津科技大学 | Method for removing heavy metal arsenic in dunaliella salina |
| CN114617090A (en) * | 2022-02-22 | 2022-06-14 | 潍坊科技学院 | Penaeus vannamei boone culture mineral composition, preparation method and application |
| CN114617090B (en) * | 2022-02-22 | 2024-01-19 | 潍坊科技学院 | Mineral composition for penaeus vannamei boone culture, preparation method and application |
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