CN104071927A - Acid-making sewage treatment system and method - Google Patents
Acid-making sewage treatment system and method Download PDFInfo
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- CN104071927A CN104071927A CN201410333492.6A CN201410333492A CN104071927A CN 104071927 A CN104071927 A CN 104071927A CN 201410333492 A CN201410333492 A CN 201410333492A CN 104071927 A CN104071927 A CN 104071927A
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Abstract
The invention provides an acid-making sewage treatment system. The acid-making sewage treatment system comprises a water inlet pool with a water inlet, a sewage neutralization device communicated with the water inlet pool, a first sewage concentration pool communicated with the sewage neutralization device, a sewage softening device communicated with the first sewage concentration pool, a second sewage concentration pool communicated with the sewage softening device, a first reuse water pool communicated with the second sewage concentration pool, a cooling water device communicated with the first reuse water tank, and a second reuse water pool communicated with the cooling water device and provided with a water outlet. Compared with the prior art, the acid-making sewage treatment system can recycle arsenic and fluoride ions in acid-making sewage, can reduce hardness of the acid-making sewage, and can reduce the temperature of the acid-making sewage, so that the sewage can realize cyclic utilization. The invention further provides an acid-making sewage treatment method which is simple and efficient.
Description
Technical field
The present invention relates to technical field of sewage, relate in particular to a kind of relieving haperacidity Sewage treatment systems and relieving haperacidity sewage water treatment method.
Background technology
Sulfuric acid is one of staple product in chemical industry, along with socioeconomic development, the departments such as many industrial trades such as metallurgy, oil, national defence, mechanical workout and medicine, enamel are increasing to the demand of sulfuric acid, sulfuric acid production process also grows up gradually, wherein in non-ferrous metal metallurgy because its raw material mostly is metallic sulfide, in the time smelting, can produce the SO that in a large number environment had harm
2, and as SO in flue gas
2concentration is higher than 3.5%, can be made as sulfuric acid by certain art breading, the pollution of the waste gas that utilizes metallurgical off-gas acid-making to reduce to produce in non-ferrous metal metallurgy to environment, can also make full use of resource, improve the economic benefit of enterprise, be smoke treatment in current non-ferrous metal metallurgy enterprise, produce a kind of method that sulfuric acid is comparatively conventional.But metallurgical off-gas acid-making can be discharged a large amount of sour waters aborning.
The relieving haperacidity sewage that in prior art, metallurgical off-gas acid-making produces contains the heavy metal contaminants such as arsenic, fluorine, if this part sewage directly discharges, it can permeate the ground with surface runoff and rainfall runoff, can cause huge pollution to surface water, and the pollution level of sour water should not be underestimated; In addition, directly discharge this part sewage, can cause the huge waste of the metallic element wherein with utility value.The sour water that prior art produces metallurgical off-gas acid-making does not have recycle, has caused the waste of resource.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of relieving haperacidity Sewage treatment systems and relieving haperacidity sewage water treatment method, relieving haperacidity Sewage treatment systems provided by the invention makes relieving haperacidity effluent cycle after treatment utilization.
The invention provides a kind of relieving haperacidity Sewage treatment systems, comprise pump sump, described pump sump is provided with water-in;
The sewage neutralising arrangement being communicated with described pump sump;
The first sewage concentration tank being communicated with described sewage neutralising arrangement;
The sewage softening installation being communicated with described the first sewage concentration tank;
The second sewage concentration tank being communicated with described sewage softening installation;
The first reuse pool being communicated with described the second sewage concentration tank;
The chilled water unit being communicated with described the first reuse pool;
The second reuse pool being communicated with described chilled water unit, described the second reuse pool is provided with water outlet.
Preferably, described sewage softening installation comprises softening tank and mixing pump.
Preferably, be provided with pressure filter and enter stock pump in described the first sewage concentration tank, the output terminal of the pressure filter arranging in described the first sewage concentration tank is connected with the input terminus that enters stock pump; ;
Described the second sewage concentration tank is provided with pressure filter and enters stock pump, and the output terminal of the pressure filter arranging in described the second sewage concentration tank is connected with the input terminus that enters stock pump.
The invention provides a kind of relieving haperacidity sewage water treatment method, comprise the following steps:
Adopt relieving haperacidity Sewage treatment systems, relieving haperacidity sewage is processed, obtain sewage after treatment;
Described relieving haperacidity Sewage treatment systems comprises: the pump sump, sewage neutralising arrangement, the first sewage concentration tank, sewage softening installation, the second sewage concentration tank, the first reuse pool, chilled water unit and the second reuse pool that are communicated with successively;
Described pump sump is provided with water-in, and described the second reuse pool is provided with water outlet.
Preferably, in described sewage softening installation, sewage is softened by carbonate;
Described carbonate comprises sodium carbonate and/or salt of wormwood.
Preferably, pH value=8～9 of sewage in described sewage softening installation.
Preferably, in described the first sewage concentration tank, the concentration time of sewage is 20min～40min.
Preferably, in described the second sewage concentration tank, the concentration time of sewage is 20min～40min.
Preferably, in described chilled water unit, the temperature of sewage is less than or equal to 35 DEG C.
Preferably, pH value=9～10 of sewage in described sewage neutralising arrangement.
The invention provides a kind of relieving haperacidity Sewage treatment systems, comprise pump sump, described pump sump is provided with water-in; The sewage neutralising arrangement being communicated with described pump sump; The first sewage concentration tank being communicated with described sewage neutralising arrangement; The sewage softening installation being communicated with described the first sewage concentration tank; The the second sewage concentration district being communicated with described sewage softening installation; The first reuse pool being communicated with described the second sewage concentration tank; The chilled water unit being communicated with described the first reuse pool; The second reuse pool being communicated with described chilled water unit, shown in the second reuse pool be provided with water outlet.Pending relieving haperacidity sewage enters in the relieving haperacidity Sewage treatment systems that the application provides by the water-in of pump sump, then passes through successively sewage neutralising arrangement, the first sewage concentration tank, sewage softening installation, the second sewage concentration tank, the first reuse pool, chilled water unit and the second reuse pool; Sewage after treatment is discharged through the water outlet of the second reuse pool, thereby delivers to recycle in relieving haperacidity cleaning section.In the relieving haperacidity Sewage treatment systems that the application provides, the sewage neutralising arrangement comprising is removed the arsonium ion in sewage, fluorion part; Adopt carbonate that the calcium ion in sewage, magnesium ion part are removed, reduce dirty water hardness; Chilled water unit is undertaken cooling by sewage, meet the water temperature requirement of cycling use of water, therefore, compared with prior art, relieving haperacidity Sewage treatment systems provided by the invention has been carried out the arsonium ion in relieving haperacidity sewage, fluorion recovery, has been adopted carbonate to reduce the dirty water hardness of relieving haperacidity, temperature to relieving haperacidity sewage reduces, and makes the sewage can recycle.Experimental result shows: the dirty water hardness of relieving haperacidity Sewage treatment systems provided by the invention processing is 5～320; Water temperature is less than or equal to 35 DEG C.
Brief description of the drawings
The relieving haperacidity sewage treatment process figure that Fig. 1 provides for the embodiment of the present invention.
Embodiment
The invention provides a kind of relieving haperacidity Sewage treatment systems, comprise pump sump, described pump sump is provided with water-in;
The sewage neutralising arrangement being communicated with described pump sump;
The first sewage concentration tank being communicated with described sewage neutralising arrangement;
The sewage softening installation being communicated with described the first sewage concentration tank;
The second sewage concentration tank being communicated with described sewage softening installation;
The first reuse pool being communicated with described the second sewage concentration tank;
The chilled water unit being communicated with described the first reuse pool;
The second reuse pool being communicated with described chilled water unit, described the second reuse pool is provided with water outlet.
In the relieving haperacidity Sewage treatment systems that the application provides, the sewage neutralising arrangement comprising is removed the arsonium ion in sewage, fluorion part; Sewage softening installation is removed the calcium ion in sewage, magnesium ion part, reduces dirty water hardness; Chilled water unit is undertaken cooling by sewage, meet the water temperature requirement of cycling use of water, therefore, compared with prior art, relieving haperacidity Sewage treatment systems provided by the invention has been carried out the arsonium ion in relieving haperacidity sewage, fluorion recovery, has been adopted carbonate to reduce the dirty water hardness of relieving haperacidity, temperature to relieving haperacidity sewage reduces, and makes the sewage can recycle.Experimental result shows: the dirty water hardness of relieving haperacidity Sewage treatment systems provided by the invention processing is 5～320; Water temperature is less than or equal to 35 DEG C.
Relieving haperacidity Sewage treatment systems provided by the invention comprises pump sump, and described pump sump is provided with water-in.The present invention is collected into through water-in the sour water producing in metallurgical off-gas acid-making process in pump sump.In the present invention, in described pump sump, be provided with pump; Sour water is delivered to sewage neutralising arrangement by described pump.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the sewage neutralising arrangement being communicated with described pump sump, and in an embodiment of the present invention, described sewage neutralising arrangement can be specially neutralization bucket; Volume and the shape of the present invention to described neutralization bucket do not have special restriction, adopts neutralization bucket well known to those skilled in the art.The present invention preferably adopts milk of lime to neutralize sewage in described sewage neutralising arrangement, and removes part arsonium ion and fluorion; Ca in described milk of lime (OH)
2massfraction be 5%; The content of CaO of preparing in the lime that milk of lime adopts is more than or equal to 80%; By controlling the consumption of milk of lime, make pH value=9～10 of water in described sewage neutral zone; The temperature of described neutralization is preferably 50 DEG C～70 DEG C, more preferably 55 DEG C～65 DEG C, most preferably is 60 DEG C; The time of described neutralization is preferably 20min～40min, and more preferably 25min～35min, most preferably is 30min.In an embodiment of the present invention, milk of lime is removed the arsonium ion in sewage and fluorion part, and arsenic removal rate can reach 95%, and the clearance of fluorine can reach 90%.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the first sewage concentration tank being communicated with described sewage neutralising arrangement.In the present invention, as preferably, be provided with pressure filter and enter stock pump in described the first sewage concentration tank, the output terminal of the pressure filter arranging in described the first sewage concentration tank is connected with the input terminus that enters stock pump; The sewage that described sewage neutralising arrangement produces flows by gravitational force into described the first sewage concentration tank, concentrates by pressure filter, produces the first filter residue and the first filtrate; Described the first filter residue is transported to slag storehouse and reclaims; Described enter stock pump the first filtrate is delivered to sewage softening installation by the water outlet of the first sewage concentration tank.In the present invention, in described the first concentration basin, the temperature of sewage concentration is preferably 40 DEG C～50 DEG C, more preferably 40 DEG C; In described the first concentration basin, the time of sewage concentration is preferably 20min～40min, and more preferably 25min～35min, most preferably is 30min.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the sewage softening installation being communicated with described the first sewage concentration district, and in an embodiment of the present invention, described sewage softening installation can specifically comprise softening tank and be arranged on the mixing pump in described softening tank.In the present invention, in described sewage softening installation, sewage is preferably softened by carbonate, and carbonate is removed the part calcium in sewage, magnesium ion, has reduced hardness; Described carbonate preferably includes sodium carbonate and/or salt of wormwood, more preferably sodium carbonate; By controlling the content of described carbonate, make pH value=8～9 of water in sewage neutralising arrangement; Described softening temperature is preferably 40 DEG C～45 DEG C, more preferably 40 DEG C; The described softening time is preferably 2min～3min, more preferably 3min.In the present invention, described mixing pump stirs sewage, makes sewage fully softening; Described sewage softening installation also comprises puts groove pump, described in put groove pump by sewage transport to the second sewage concentration tank after softening.In an embodiment of the present invention, sewage softening installation is provided with 3 mixing pumps, and power is respectively 13KW, 23KW and 4KW; The described groove pump of putting is provided with 2, and power is respectively 7KW and 12KW; Dirty water hardness after softening is 5～320.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the second sewage concentration tank being communicated with described sewage softening installation.In the present invention, as preferably, be provided with pressure filter and enter stock pump in described the second sewage concentration tank, the output terminal of the pressure filter arranging in described the second sewage concentration tank is connected with the input terminus that enters stock pump; Described pressure filter carries the sewage of coming to concentrate sewage softening installation, produces the second filter residue and the second filtrate; The second filter residue is transported to slag storehouse and reclaims; Described enter stock pump the second filtrate be delivered to the first backwater use pond.In the present invention, in described the second sewage concentration tank, the temperature of sewage concentration is preferably 40 DEG C～45 DEG C, more preferably 40 DEG C; In described the second sewage concentration tank, the time of sewage concentration is preferably 20min～40min, and more preferably 25min～35min, most preferably is 30min.In an embodiment of the present invention, in described the second sewage concentration tank, be provided with 1 160m
2pressure filter and 2 enter stock pump; Described pressure filter carries the sewage of coming to carry out press filtration sewage softening installation, and the second filtrate producing is delivered to into stock pump, enters stock pump the second filtrate is delivered to the first reuse pool.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the first reuse pool being communicated with described the second sewage concentration tank.In the present invention, described the first reuse pool stores the second filtrate producing after the second sewage concentration tank compression; In described the first reuse pool, arrange into tower pump, described in enter tower pump by the second filtrate pump deliver in chilled water unit, carry out cooling.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the chilled water unit being communicated with described the first reuse pool.In the present invention, described cooling temperature is preferably less than or equal to 35 DEG C, is more preferably less than or equal to 30 DEG C, is most preferably less than or equal to 20 DEG C.In an embodiment of the present invention, described chilled water unit can be cooling tower; The treatment capacity of described cooling tower is 100m
3/ h.
Relieving haperacidity Sewage treatment systems provided by the invention comprises the second reuse pool being communicated with described chilled water unit, described the second reuse pool is provided with water outlet, in the present invention, described the second reuse pool is stored water after treatment chilled water unit, stand-by; In described the second reuse pool, be provided with pump, recycle in relieving haperacidity cleaning section delivered to by the water pump after above-mentioned art breading by described pump.
The invention provides a kind of relieving haperacidity sewage water treatment method, comprise the following steps:
Adopt relieving haperacidity Sewage treatment systems, relieving haperacidity sewage is processed, obtain sewage after treatment;
Described relieving haperacidity Sewage treatment systems comprises: the pump sump, sewage neutralising arrangement, the first sewage concentration tank, sewage softening installation, the second sewage concentration tank, the first reuse pool, chilled water unit and the second reuse pool that are communicated with successively;
Described pump sump is provided with water-in, and described the second reuse pool is provided with water outlet.
The present invention enters pending relieving haperacidity sewage in described relieving haperacidity Sewage treatment systems by the water-in of pump sump described in technique scheme, then pass through successively sewage neutralising arrangement, the first sewage concentration tank, sewage softening installation, the second sewage concentration tank, the first reuse pool and chilled water unit described in technique scheme, be expelled to recycle in relieving haperacidity cleaning section through the water outlet of the second reuse pool.
The present invention collects relieving haperacidity sewage by pump sump, is then delivered to downstream unit.
In the present invention, described pump sump is the pump sump described in technique scheme, does not repeat them here.The temperature of described relieving haperacidity sewage is 55 DEG C～65 DEG C, and pH value is 0.5, and hardness is 1000～1500.
The present invention neutralizes the relieving haperacidity sewage of collection in sewage neutralising arrangement, obtains the sewage after neutralization.In an embodiment of the present invention, described sewage neutralising arrangement can be specially neutralization bucket; Volume and the shape of the present invention to described neutralization bucket do not have special restriction, adopts neutralization bucket well known to those skilled in the art.The present invention preferably adopts milk of lime to neutralize sewage in described sewage neutralising arrangement; Ca in described milk of lime (OH)
2massfraction be 5%; The content of CaO of preparing in the lime that milk of lime adopts is more than or equal to 80%; By controlling the consumption of milk of lime, make pH value=9～10 of water in described sewage neutralising arrangement; The temperature of described neutralization is preferably 50 DEG C～70 DEG C, more preferably 55 DEG C～65 DEG C, most preferably is 60 DEG C; The time of described neutralization is preferably 20min～40min, and more preferably 25min～35min, most preferably is 30min.In an embodiment of the present invention, milk of lime is removed the arsonium ion in sewage and fluorion part, and the clearance of arsonium ion can reach 95%, and the clearance of fluorion can reach 90%.
The present invention concentrates the sewage after neutralization in the first sewage concentration tank, produces the first filter residue and the first filtrate.In the present invention, described the first sewage concentration tank is the first sewage concentration tank described in technique scheme, does not repeat them here.In the present invention, in described the first concentration basin, the concentrated temperature of sewage is preferably 40 DEG C～50 DEG C, more preferably 40 DEG C; In described the first concentration basin, the concentrated time of sewage is preferably 20min～40min, and more preferably 25min～35min, most preferably is 30min.The present invention is recycled to the first filter residue in slag storehouse; The first filtrate producing is delivered to sewage softening installation.
The first filtrate that the present invention produces after the first sewage concentration tank is processed is softened in sewage softening installation, and described sewage softening installation is the sewage softening installation described in technique scheme, does not repeat them here.In the present invention, in described sewage softening installation, sewage is preferably softened by carbonate, and carbonate is removed the calcium ion in sewage, magnesium ion part, has reduced hardness; Described carbonate preferably includes sodium carbonate and/or salt of wormwood, more preferably sodium carbonate; By controlling the content of described carbonate, make pH value=8～9 of water in sewage neutral zone; Described softening temperature is preferably 40 DEG C～45 DEG C, more preferably 40 DEG C; The described softening time is preferably 2min～3min, more preferably 3min.
The present invention will soften sewage after treatment and concentrate at the second sewage concentration tank, produce the second filter residue and the second filtrate.In the present invention, described the second sewage concentration tank is the second sewage concentration tank described in technique scheme, does not repeat them here.In the present invention, in described the second sewage concentration tank, the temperature of sewage concentration is preferably 40 DEG C～45 DEG C, more preferably 40 DEG C; In described the second concentration basin, the time of sewage concentration is preferably 20min～40min, and more preferably 25min～35min, most preferably is 30min.The second filter residue is recycled to slag storehouse by the present invention, and the second filtrate producing is delivered to the first reuse pool.
The present invention is stored in the water producing after the second concentration basin is processed in the first reuse pool; Chilled water unit delivered to by the water pump in the first reuse pool by the tower pump that enters in described the first reuse pool.
The present invention carries out the water in the first reuse pool cooling through chilled water unit, and the water obtaining after cooling is delivered to the second reuse pool storage, stand-by.In the present invention, the temperature of the water in described chilled water unit is preferably less than or equal to 35 DEG C, is more preferably less than or equal to 30 DEG C, is most preferably less than or equal to 20 DEG C.
In the present invention, described the first reuse pool, chilled water unit and the second reuse pool are the first reuse pool described in technique scheme, chilled water unit and the second reuse pool, do not repeat them here.
Particularly, when adopting soda ash soften when processing to sewage, its technical process is referring to Fig. 1, the relieving haperacidity sewage treatment process figure that Fig. 1 provides for the embodiment of the present invention.
As seen from Figure 1, the system that the embodiment of the present invention provides comprises pump sump, and described pump sump is provided with water-in; The neutralization bucket being communicated with described pump sump; The first sewage concentration tank being communicated with described neutralization bucket; The softening tank being communicated with described the first sewage concentration tank; The second sewage concentration tank being communicated with described softening tank; The first reuse pool being communicated with described the second sewage concentration tank; The cooling tower being communicated with described the first reuse pool; The second reuse pool being communicated with described cooling tower, described the second reuse pool is provided with water outlet.The present invention enters pending relieving haperacidity sewage in described relieving haperacidity Sewage treatment systems by the water-in of described pump sump, then the sump pump in pump sump is delivered in described neutralization bucket, milk of lime is added in described neutralization bucket, neutralize, by sewage transport to the first sewage concentration tank after neutralizing treatment (concentration basin 1), sewage is concentrated, produce the first filter residue and the first filtrate; The first filtrate producing is delivered to softening tank and softens, in softening tank, add soda ash to soften sewage; By sewage transport to the second sewage concentration tank (concentration basin 2) after softening, concentrate, produce the second filtrate and the second filter residue; The second filtrate pump is delivered to the first reuse pool to be stored; Water pump in the first reuse pool is delivered to cooling tower, carry out cooling to processing water; Cooled water is delivered to the second reuse pool, is discharged by its water outlet, finally the water pump of the second reuse pool is delivered to recycle in relieving haperacidity cleaning section.
The present invention carries out hardness test to sewage after treatment.The present invention does not have special restriction to the method for described hardness test, adopts water hardness measuring technology scheme well known to those skilled in the art.
Test result shows: relieving haperacidity Sewage treatment systems provided by the invention dirty water hardness after treatment is 5～320.
The Sewage treatment systems water hardness after treatment that the application provides is 5～320, although the water hardness is 165～510 in prior art, also can meet the production requirement of fluidizing furnace cleaning section, but need frequent cleaning strainer, so the Sewage treatment systems that the application provides sewage hardness after treatment reduces greatly, reduce the number of times of cleaning strainer; Also sewage has been carried out to recycle, taken full advantage of water resources, saved cost.
The invention provides a kind of relieving haperacidity Sewage treatment systems, comprise pump sump, described pump sump is provided with water-in; The sewage neutralising arrangement being communicated with described pump sump; The first sewage concentration tank being communicated with described sewage neutralising arrangement; The sewage softening installation being communicated with described the first sewage concentration tank; The the second sewage concentration district being communicated with described sewage softening installation; The first reuse pool being communicated with described the second sewage concentration tank; The chilled water unit being communicated with described the first reuse pool; The second reuse pool being communicated with described chilled water unit.Pending relieving haperacidity sewage enters in the relieving haperacidity Sewage treatment systems that the application provides by pump sump, then passes through successively sewage neutralising arrangement, the first sewage concentration tank, sewage softening installation, the second sewage concentration tank, the first reuse pool, chilled water unit and the second reuse pool; Sewage after treatment is expelled to recycle in relieving haperacidity cleaning section through the second reuse pool.In the relieving haperacidity Sewage treatment systems that the application provides, the sewage neutralising arrangement comprising is removed the arsonium ion in sewage, fluorion part; Adopt carbonate that the calcium ion in sewage, magnesium ion part are removed, reduce dirty water hardness; Chilled water unit is undertaken cooling by sewage, meet the water temperature requirement of cycling use of water, therefore, compared with prior art, relieving haperacidity Sewage treatment systems provided by the invention has been carried out the arsonium ion in relieving haperacidity sewage, fluorion recovery, the dirty water hardness of relieving haperacidity has been reduced, temperature to relieving haperacidity sewage reduces, and makes the sewage can recycle.Experimental result shows: the dirty water hardness of relieving haperacidity Sewage treatment systems provided by the invention processing is 5～320; Water temperature is less than or equal to 35 DEG C.
In order to further illustrate the present invention, below in conjunction with embodiment, a kind of relieving haperacidity Sewage treatment systems provided by the invention and relieving haperacidity sewage water treatment method are described in detail, but they can not be interpreted as to limiting the scope of the present invention.
Embodiment 1
By 600 tons, the relieving haperacidity sewage in pump sump by pump delivery to neutralization bucket, the dirty water hardness of described relieving haperacidity is that 1000, pH value is 0.5, temperature is 60 DEG C; In neutralization bucket, add milk of lime, Ca in milk of lime (OH)
2massfraction be 5%, it is 9 that described milk of lime is controlled pH value in neutralization bucket;
The sewage that neutralization bucket is produced drains into the first sewage concentration tank and concentrates, obtain the first filtrate and the first waste residue, the first waste residue is reclaimed, the first filtrate is delivered in softening tank, in softening tank, add the about 750kg of calcined soda for industry, the pH value of controlling sewage in neutralization bucket is 8;
Sewage after softening, through the concentrated 30min of the second sewage concentration tank, is produced to the second filtrate and the second waste residue, the second waste residue is reclaimed, the second filtrate is delivered to the first reuse pool;
The water of the first reuse pool is delivered to cooling tower and carries out coolingly, be cooled to 20 DEG C, be then pumped to the second reuse pool, obtain the sewage of processing.
The present invention, according to testing method described in technique scheme, carries out hardness test to sewage after treatment, and test result is: the dirty water hardness that the present embodiment 1 obtains after processing is 100, can meet the Production requirement of fluidizing furnace purification system.
Embodiment 2
By 500 tons, the relieving haperacidity sewage in pump sump, by pump delivery, to neutralization bucket, the dirty water hardness of described relieving haperacidity is that 1500, pH value is 0.5, and temperature is 58 DEG C; Add milk of lime at neutralization bucket, Ca in milk of lime (OH)
2massfraction be 5%, the pH value of sewage in neutralization bucket is controlled at 9.5 left and right by described milk of lime;
The sewage that neutralization bucket is produced drains into the first sewage concentration tank and concentrates, obtain the first filtrate and the first waste residue, the first waste residue is reclaimed, the first filtrate is delivered in softening tank, in softening tank, add the about 650kg of calcined soda for industry, control the pH value of sewage in softening tank in 8.5 left and right;
Sewage after softening, through the concentrated 30min of the second sewage concentration tank, is produced to the second filtrate and the second waste residue, the second waste residue is reclaimed, the second filtrate is delivered to the first reuse pool;
The first reuse pool water after treatment is delivered to cooling tower and carries out coolingly, be cooled to 25 DEG C, be then pumped to the second reuse pool, obtain the sewage of processing.
The present invention, according to testing method described in technique scheme, carries out hardness test to sewage after treatment, and test result is: the dirty water hardness that the present embodiment 2 obtains after processing is 300, can meet the Production requirement of fluidizing furnace purification system.
Embodiment 3
By 700 tons, the relieving haperacidity sewage in pump sump by pump delivery to neutralization bucket, the dirty water hardness of described relieving haperacidity is that 1100, pH value is 0.5, temperature is 61 DEG C; Add milk of lime at neutralization bucket, Ca in milk of lime (OH)
2massfraction be 5%, the pH value in neutralization bucket is controlled at 9.2 left and right by described milk of lime;
The sewage producing after neutralization bucket is processed drains into the first sewage concentration tank and concentrates, obtain the first filtrate and the first waste residue, the first waste residue is reclaimed, the first filtrate is delivered in the softening tank of sewage softened zone, in softening tank, add the about 850kg of calcined soda for industry, control the pH value of sewage softened zone between 8～9;
Sewage after softening, through the concentrated 30min of the second sewage concentration tank, is produced to the second filtrate and the second waste residue, the second waste residue is reclaimed, the second filtrate is delivered to the first reuse pool;
The water of the first reuse pool is delivered to cooling pool and carries out coolingly, be cooled to 20 DEG C, be then pumped to the second reuse pool, obtain the sewage of processing.
The present invention, according to testing method described in technique scheme, carries out hardness test to sewage after treatment, and test result is: the dirty water hardness that the present embodiment 3 obtains after processing is 50, can meet the Production requirement of fluidizing furnace purification system.
Embodiment 4
By 750 tons, the relieving haperacidity sewage in pump sump by pump delivery to neutralization bucket, the dirty water hardness of described relieving haperacidity is that 1300, pH value is 0.5, temperature is 57 DEG C; Add milk of lime at neutralization bucket, Ca in milk of lime (OH)
2massfraction be 5%, the pH value in neutralization bucket is controlled at 10 left and right by described milk of lime;
The sewage producing after neutralising arrangement is processed drains into the first sewage concentration tank and concentrates, obtain the first filtrate and the first waste residue, the first waste residue is reclaimed, the first filtrate is delivered in softening tank, in softening tank, add the about 950kg of calcined soda for industry, the pH value of controlling sewage in softening tank is 9 left and right;
Sewage after softening, through the concentrated 40min of the second sewage concentration tank, is produced to the second filtrate and the second waste residue, the second waste residue is reclaimed, the second filtrate is delivered to the first reuse pool;
The water of the first reuse pool is delivered to cooling tower and carries out coolingly, be cooled to 10 DEG C, be then pumped to the second reuse pool, obtain the sewage of processing.
The present invention, according to testing method described in technique scheme, carries out hardness test to sewage after treatment, and test result is: the dirty water hardness that the present embodiment 4 obtains after processing is 5, can meet the Production requirement of fluidizing furnace purification system.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a relieving haperacidity Sewage treatment systems, comprises pump sump, and described pump sump is provided with water-in;
The sewage neutralising arrangement being communicated with described pump sump;
The first sewage concentration tank being communicated with described sewage neutralising arrangement;
The sewage softening installation being communicated with described the first sewage concentration tank;
The second sewage concentration tank being communicated with described sewage softening installation;
The first reuse pool being communicated with described the second sewage concentration tank;
The chilled water unit being communicated with described the first reuse pool;
The second reuse pool being communicated with described chilled water unit, described the second reuse pool is provided with water outlet.
2. Sewage treatment systems according to claim 1, is characterized in that, described sewage softening installation comprises softening tank and is arranged on the mixing pump in described softening tank.
3. Sewage treatment systems according to claim 1, is characterized in that, is provided with pressure filter and enters stock pump in described the first sewage concentration tank, and the output terminal of the pressure filter arranging in described the first sewage concentration tank is connected with the input terminus that enters stock pump;
Described the second sewage concentration tank is provided with pressure filter and enters stock pump, and the output terminal of the pressure filter arranging in described the second sewage concentration tank is connected with the input terminus that enters stock pump.
4. a relieving haperacidity sewage water treatment method, comprises the following steps:
Adopt relieving haperacidity Sewage treatment systems, relieving haperacidity sewage is processed, obtain the sewage of processing;
Described relieving haperacidity Sewage treatment systems comprises: the pump sump, sewage neutralising arrangement, the first sewage concentration tank, sewage softening installation, the second sewage concentration tank, the first reuse pool, chilled water unit and the second reuse pool that are communicated with successively;
Described pump sump is provided with water-in, and described the second reuse pool is provided with water outlet.
5. relieving haperacidity sewage water treatment method according to claim 4, is characterized in that, in described sewage softening installation, sewage is softened by carbonate;
Described carbonate comprises sodium carbonate and/or salt of wormwood.
6. relieving haperacidity sewage water treatment method according to claim 5, is characterized in that, pH value=8～9 of sewage in described sewage softening installation.
7. relieving haperacidity sewage water treatment method according to claim 4, is characterized in that, in described the first sewage concentration tank, the concentration time of sewage is 20min～40min.
8. relieving haperacidity sewage water treatment method according to claim 4, is characterized in that, in described the second sewage concentration tank, the concentration time of sewage is 20min～40min.
9. relieving haperacidity sewage water treatment method according to claim 4, is characterized in that, in described chilled water unit, the temperature of sewage is less than or equal to 35 DEG C.
10. relieving haperacidity sewage water treatment method according to claim 4, is characterized in that, pH value=9～10 of sewage in described sewage neutralising arrangement.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396202A (en) * | 2016-12-07 | 2017-02-15 | 武汉工程大学 | Method for resource utilization of waste acid with arsenic and fluorine import |
| CN106746028A (en) * | 2017-02-20 | 2017-05-31 | 云南锡业股份有限公司铜业分公司 | A kind of metallurgical waste acid sewage water treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN1843966A (en) * | 2006-04-28 | 2006-10-11 | 常州市裕和金属材料有限公司 | Method for treating waste acid liquor |
| CN102092869A (en) * | 2010-12-28 | 2011-06-15 | 济源市金利冶炼有限责任公司 | Processing method of waste acid in acid producing system |
| CN203382592U (en) * | 2013-07-05 | 2014-01-08 | 无锡市新都环保科技有限公司 | Acidic ion-containing waste water resource recycling treatment system |
-
2014
- 2014-07-14 CN CN201410333492.6A patent/CN104071927A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN1843966A (en) * | 2006-04-28 | 2006-10-11 | 常州市裕和金属材料有限公司 | Method for treating waste acid liquor |
| CN102092869A (en) * | 2010-12-28 | 2011-06-15 | 济源市金利冶炼有限责任公司 | Processing method of waste acid in acid producing system |
| CN203382592U (en) * | 2013-07-05 | 2014-01-08 | 无锡市新都环保科技有限公司 | Acidic ion-containing waste water resource recycling treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 万学武等: ""高浓度泥浆法在冶炼烟气制酸污水处理中的应用"", 《硫酸工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396202A (en) * | 2016-12-07 | 2017-02-15 | 武汉工程大学 | Method for resource utilization of waste acid with arsenic and fluorine import |
| CN106746028A (en) * | 2017-02-20 | 2017-05-31 | 云南锡业股份有限公司铜业分公司 | A kind of metallurgical waste acid sewage water treatment method |
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