CN105621725B - Heavy metal-polluted acid waste water treatment system - Google Patents

Heavy metal-polluted acid waste water treatment system Download PDF

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Publication number
CN105621725B
CN105621725B CN201410610526.1A CN201410610526A CN105621725B CN 105621725 B CN105621725 B CN 105621725B CN 201410610526 A CN201410610526 A CN 201410610526A CN 105621725 B CN105621725 B CN 105621725B
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reactive tank
chemicals dosing
dosing plant
tank
chamber
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CN105621725A (en
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殷华民
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JIANGSU JUDA ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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JIANGSU JUDA ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

The present invention provides a kind of heavy metal-polluted acid waste water treatment system, including sequentially connected waste acid regulating reservoir, first milk of lime reactive tank, first chamber-type press filter, first reactive tank, first efficient thickening pond, comprehensive wastewater regulating reservoir, second milk of lime reactive tank, second chamber-type press filter, second reactive tank, third reactive tank, second efficient thickening pond, descaling and antiscaling instrument, 4th reactive tank, 5th reactive tank, inclined-plate clarifying basin, flotation tank, intermediate pool, pump, zeolite filter, active carbon adsorber, active carbon adsorber is connected separately with discharge supervision pond and reuse pool.This system processing is preferable to the treatment effect of heavy metal acid water, the sand setting and sludge that are generated in processing procedure are handled by high-efficiency thickener and chamber-type press filter, prevent sludge from generating secondary pollution to environment, clear water is obtained with processing to be rinsed active carbon adsorber and zeolite adsorber, the sewage of flushing is disposed in comprehensive wastewater regulating reservoir to be handled again.

Description

Heavy metal-polluted acid waste water treatment system
Technical field
The invention belongs to the waste water treatment systems of field of environment protection, are more particularly to a kind of heavy metal-polluted acid wastewater treatment system System.
Background technology
Sewage composition H in waste acid2SO4Up to 158g/L, As 2.38g/L, Hg 0.14g/L, F 0.03g/L, Cl are 3.3g/L, Cd 1.85mg/L, Zn 4.99mg/L belong to high and contain H2SO4Amount, the water quality of high content of beary metal, especially sewage In As, Hg, Pb, Cd be that noxious material is very harmful to the environment mankind, be that the national first kind requires treated substance.
Invention content
In order to solve the above technical problem, the present invention provides a kind of preferable huge sum of moneys for the treatment of effect of avoidable secondary pollution Belong to acid water processing system.
In order to reach above-mentioned technique effect, technical scheme is as follows:
Heavy metal-polluted acid waste water treatment system, including sequentially connected waste acid regulating reservoir, the first milk of lime reactive tank, first Chamber-type press filter, the first reactive tank, the first efficient thickening pond, comprehensive wastewater regulating reservoir, the second milk of lime reactive tank, the second van-type Filter press, the second reactive tank, third reactive tank, the second efficient thickening pond, descaling and antiscaling instrument, the 4th reactive tank, the 5th reactive tank, Inclined-plate clarifying basin, flotation tank, intermediate pool, pump, zeolite filter, active carbon adsorber, active carbon adsorber are connected separately with Discharge supervision pond and reuse pool, discharge supervision pond connect electromagnetic flowmeter, and reuse pool is connected with frequency conversion water supply facility, waste acid Self priming pump is equipped between regulating reservoir and milk of lime reactive tank, the first efficient thickening pond is connected with third van-type by the first underflow pump Filter press, third chamber-type press filter are connect with the first efficient thickening pond, and the second efficient thickening pond is connected with by the second underflow pump 4th chamber-type press filter, the 4th chamber-type press filter are connect with the second efficient thickening pond, and inclined-plate clarifying basin and flotation tank are connected with dirt Mud thickener, sludge concentration tank are connected with the 5th chamber-type press filter, discharge supervision pond by recoil pump respectively with activated carbon adsorption Device is connected with zeolite filter, and backwashing pump and zeolite filter are connect with comprehensive wastewater regulating reservoir respectively.
In some embodiments, the first reactive tank is equipped with two sets, is connected separately with lime chemicals dosing plant successively and alkali adds Medicine device, the second reactive tank are connected with lime chemicals dosing plant, and third reactive tank is equipped with three sets, are connected separately with sour dosing dress successively It sets, alkali chemicals dosing plant and polyacrylamide chemicals dosing plant, the 4th reactive tank are connected separately with lime dosing dress successively equipped with two sets It sets and sour chemicals dosing plant, the 5th reactive tank is equipped with two sets, be connected separately with polyacrylamide chemicals dosing plant and alkali dosing dress successively It sets.
In some embodiments, flotation tank is connected with polyacrylamide chemicals dosing plant and aluminium polychloride chemicals dosing plant.
In some embodiments, reuse pool is connected with sour chemicals dosing plant.
In some embodiments, the first reactive tank, the second reactive tank, third reactive tank, the 4th reactive tank and the 5th are anti- Slot is answered to be connected separately with pH auto-controlling apparatus.
In some embodiments, the first reactive tank, the second reactive tank, third reactive tank, the 4th reactive tank and the 5th are anti- It answers and is connected separately with blender in slot.
In some embodiments, it is equipped with natural crystal in zeolite filter, the specific surface area of natural crystal is 500~ 1000m2/kg。
Advantage is:This system processing is preferable to the treatment effect of heavy metal acid water, by high-efficiency thickener and Chamber-type press filter handles the sand setting and sludge that are generated in processing procedure, prevents sludge from generating secondary pollution to environment, uses Processing obtains clear water and is rinsed to active carbon adsorber and zeolite adsorber, and the sewage of flushing is disposed to comprehensive wastewater adjusting It is handled again in pond.
Description of the drawings
The present invention will be further described below with reference to the drawings.
Fig. 1 is the structural schematic diagram of an embodiment of the present invention heavy metal-polluted acid waste water treatment system.
Specific implementation mode
As shown in Figure 1, the present invention provides a kind of heavy metal-polluted acid waste water treatment system, including sequentially connected waste acid is adjusted Pond 1, the first milk of lime reactive tank 2, the first chamber-type press filter 3, the first reactive tank 4, the first efficient thickening pond 5, comprehensive wastewater tune Section pond 6, the second milk of lime reactive tank 7, the second chamber-type press filter 8, the second reactive tank 9, third reactive tank 10, second are efficiently dense Pond 11, descaling and antiscaling instrument 12, the 4th reactive tank 13, the 5th reactive tank 14, inclined-plate clarifying basin 15, flotation tank 16, intermediate pool 17, Zeolite filter 18 and active carbon adsorber 19, active carbon adsorber 19 are connected separately with discharge supervision pond 20 and reuse pool 21, discharge supervision pond 20 connects electromagnetic flowmeter 201, and reuse pool 21 is connected with frequency conversion water supply facility 211, waste acid regulating reservoir 1 Self priming pump is equipped between milk of lime reactive tank, the first efficient thickening pond 5 is connected with third van-type pressure by the first underflow pump 51 Filter 52, third chamber-type press filter 52 are connect with the first efficient thickening pond 5, and the second efficient thickening pond 11 passes through the second underflow pump 111 are connected with the 4th chamber-type press filter 112, and the 4th chamber-type press filter 112 is connect with the second efficient thickening pond 11, inclined-plate clarifying basin 15 and flotation tank 16 be connected with sludge concentration tank 156, sludge concentration tank 156 is connected with the 5th chamber-type press filter 157, discharge supervision Pond 20 is connect with active carbon adsorber 19 and zeolite filter 18 respectively by recoil pump 22.
First reactive tank 4 is equipped with two sets, is connected separately with lime chemicals dosing plant and alkali chemicals dosing plant, the second reactive tank successively 9 are connected with lime chemicals dosing plant, and third reactive tank 10 is equipped with three sets, is connected separately with sour chemicals dosing plant, alkali chemicals dosing plant successively With polyacrylamide chemicals dosing plant, the 4th reactive tank 13 is equipped with two sets, is connected separately with lime chemicals dosing plant and sour dosing successively Device, the 5th reactive tank 14 are equipped with two sets, are connected separately with polyacrylamide chemicals dosing plant and alkali chemicals dosing plant successively.Flotation tank 16 are connected with polyacrylamide chemicals dosing plant and aluminium polychloride chemicals dosing plant.Reuse pool 21 is connected with sour chemicals dosing plant.The One reactive tank 4, the second reactive tank 9, third reactive tank 10, the 4th reactive tank 13 and the 5th reactive tank 14 are connected separately with pH automatic controls Instrument.It is separately connected in first reactive tank 4, the second reactive tank 9, third reactive tank 10, the 4th reactive tank 13 and the 5th reactive tank 14 There is blender.Natural crystal is equipped in zeolite filter 18, the specific surface area of natural crystal is 500~1000m2/kg。
Acid water in waste acid regulating reservoir 1 is inhaled by self priming pump in the first milk of lime reactive tank 2, in the first milk of lime It is pre-processed to acid water feeding lime in reactive tank 2, lime forms calcium sulfate with the sulfuric acid in acid water and sinks It forms sediment, being promoted to the first chamber-type press filter 3 by self priming pump through 2 pretreated waste water of the first milk of lime reactive tank carries out mud-water separation, Waste acid waste liquid is discharged into the first reactive tank 4 by the first chamber-type press filter 3 again, passes through lime chemicals dosing plant and alkali chemicals dosing plant Feeding lime and sodium hydroxide into two set of first reactive tank 4 respectively successively, sulfuric acid and arsenic in acid water are respectively formed sulphur Sour calcium and iron arsenite precipitate, and the mercury in acid water forms hydroxide floc under the conditions of weak base, makes mercury Precipitation.
Mixture in first reactive tank 4 is transported in the first efficient thickening pond 5, and the first efficient thickening pond 5 will mixing Object discharges it into after carrying out gravity settling separation in comprehensive wastewater regulating reservoir 6, and the gypsum of the beds of precipitation is pumped by the second underflow pump 51 Enter in third chamber-type press filter 52, is transported outward by automobile by obtaining sludge after 52 press filtration of third chamber-type press filter, the gypsum of generation can It sells.
Comprehensive wastewater regulating reservoir 6 is concrete structure, and the material of liner is fiberglass, prevents from being corroded by acid water, by The acid water of first efficient thickening pond 5 input and the acid water of zinc hydrometallurgy are sufficiently mixed in comprehensive wastewater regulating reservoir 6 It places and is transported to again in the second milk of lime reactive tank 7 after stablizing for a period of time.
Lime is added by lime chemicals dosing plant into the second milk of lime reactive tank 7 to pre-process it, lime and dirt Sulfuric acid forms calcium sulfate precipitation in sour waste water.
The second chamber-type press filter 8 is promoted to by self priming pump through 7 pretreated waste liquid of the second milk of lime reactive tank and carries out muddy water Waste acid waste liquid, then is discharged into the second reactive tank 9 by separation by the second chamber-type press filter 8, by lime chemicals dosing plant to second Feeding lime in reactive tank 9, then the waste acid liquid mixture in the second reactive tank 9 is delivered in third reactive tank 10, pass through Sour chemicals dosing plant, alkali chemicals dosing plant and polyacrylamide chemicals dosing plant into three sets of third reactive tanks 10 to adding successively respectively Acid, alkali and polyacrylamide make lead, zinc, cadmium and copper in the acid water in third reactive tank 10 become hydrate cotton-shaped Sediment is precipitated, and acid water generates heavy metal flocky precipitate quilt after the second reactive tank 9 and third reactive tank 10 are handled It is delivered in the second efficient thickening pond 11 and carries out separating treatment.
The waste liquid that mixture carries out after gravity settling separation is discharged by the second efficient thickening pond 11 by descaling and antiscaling instrument 12 The gypsum of 4th reactive tank 13 and the 5th reactive tank 14, the beds of precipitation is pumped into the 4th chamber-type press filter 112 by the second underflow pump 111 It is interior, it is transported outward by automobile by obtaining sludge after 112 press filtration of the 4th chamber-type press filter, the gypsum of generation can be sold.
By lime chemicals dosing plant and sour chemicals dosing plant successively respectively to two sets of 13 feeding limes of the 4th reactive tank and acid, lead to It crosses polyacrylamide chemicals dosing plant and alkali chemicals dosing plant and adds polyacrylamide and hydrogen-oxygen into the 5th reactive tank 14 respectively successively Change sodium, to remove the mercury of fluorine and remnants in acid water, lime, stone is added in the 4th reactive tank 13 and the 5th reactive tank 14 Ash forms calcium fluoride precipitate with the fluorine in acid water.
Waste acid waste liquid in 5th reactive tank 14 is set by direct emission in inclined-plate clarifying basin 15, the heavy metal in waste acid waste liquid Hydroxide, fluoride and other other suspended solids are deposited removal in inclined-plate clarifying basin 15, by sloping plate deposition After pond 15 is handled, acid water is discharged in flotation tank 16;Flotation tank 16 carries out advanced treating to waste acid waste liquid, and in flotation tank 16 front ends add coagulation end and add aluminium polychloride and polyacrylamide, further remove the heavy metal in waste acid waste liquid.Air supporting Clear water in pond 16 flows into intermediate pool 17, and the sediment in flotation tank 16 and inclined-plate clarifying basin 15 is discharged to sludge concentration tank In 156, acquisition sludge is transported outward by automobile after sludge concentration tank 156 handles heel row to 157 press filtration of the 5th chamber-type press filter, is generated Gypsum can sell, the 5th chamber-type press filter 157 obtains filtrate and is drained back in comprehensive wastewater regulating reservoir 6 and handles again.
Flotation tank 16 discharges water to intermediate pool, and water source is provided for zeolite filter 18.
The residual for still having micro heavy metal after chemical precipitation, air-flotation process in order to prevent, zeolite filter 18 There is preferable Adsorption effect to heavy metal in clear water.
Active carbon adsorber 19 is the safeguard of this system, the activated carbon in active carbon adsorber 19 to arsenic, mercury, lead, The heavy metal ion such as cadmium have preferable suction-operated, while the organic impurities in also adsorbable water and coloration, it is ensured that discharge water Water quality reaching standard.
Clear water 90% is obtained by processing to be transported to and can use in pond, 10% is disposed in discharge supervision pond 20.Into Enter in reuse pool 21 and its pH value is adjusted to 8.5 or so, it is ensured that water pH value is up to standard, and the clear water in reuse pool 21 passes through frequency conversion Water supply installation 211 exports, and can be used for plant area's greening etc.;Clear water in discharge supervision pond 20 is by recoil pump 22 to activity set absorption Device and zeolite filter 18 are inflated.
This system processing is preferable to the treatment effect of heavy metal acid water, by high-efficiency thickener and chamber-type press filter to It manages the sand setting generated in the process and sludge is handled, prevent sludge from generating secondary pollution to environment, clear water pair is obtained with processing Active carbon adsorber 19 and zeolite adsorber are rinsed, and the sewage of flushing, which is disposed in comprehensive wastewater regulating reservoir 6, to carry out again Secondary processing.
The above is only the preferred embodiment of heavy metal-polluted acid waste water treatment system of the present invention, for art technology For personnel, without creative efforts, various modifications and improvements can be made, these belong to the present invention Protection domain.

Claims (5)

1. heavy metal-polluted acid waste water treatment system, which is characterized in that anti-including sequentially connected waste acid regulating reservoir, the first milk of lime Answer slot, the first chamber-type press filter, the first reactive tank, the first efficient thickening pond, comprehensive wastewater regulating reservoir, the reaction of the second milk of lime Slot, the second chamber-type press filter, the second reactive tank, third reactive tank, the second efficient thickening pond, descaling and antiscaling instrument, the 4th reactive tank, 5th reactive tank, inclined-plate clarifying basin, flotation tank, intermediate pool, pump, zeolite filter, active carbon adsorber, the activated carbon are inhaled Adnexa is connected separately with discharge supervision pond and reuse pool, and discharge supervision pond connects electromagnetic flowmeter, the reuse pool It is connected with frequency conversion water supply facility, self priming pump is equipped between the waste acid regulating reservoir and milk of lime reactive tank, described first is efficiently dense Mi Chi is connected with third chamber-type press filter, the third chamber-type press filter and the described first efficient thickening pond by the first underflow pump Connection, the second efficient thickening pond are connected with the 4th chamber-type press filter, the 4th chamber-type press filter by the second underflow pump It is connect with the described second efficient thickening pond, the inclined-plate clarifying basin and flotation tank are connected with sludge concentration tank, the sludge condensation Pond is connected with the 5th chamber-type press filter, the discharge supervision pond by recoil pump respectively with active carbon adsorber and zeolite filter Connection, the backwashing pump and zeolite filter are connect with comprehensive wastewater regulating reservoir respectively;First reactive tank is equipped with two sets, It is connected separately with lime chemicals dosing plant and alkali chemicals dosing plant successively, second reactive tank is connected with lime chemicals dosing plant, described Third reactive tank is equipped with three sets, is connected separately with sour chemicals dosing plant, alkali chemicals dosing plant and polyacrylamide chemicals dosing plant, institute successively It states the 4th reactive tank and is equipped with two sets, be connected separately with lime chemicals dosing plant and sour chemicals dosing plant successively, the 5th reactive tank is set There are two sets, is connected separately with polyacrylamide chemicals dosing plant and alkali chemicals dosing plant successively;The flotation tank is connected with polyacrylamide Amine chemicals dosing plant and aluminium polychloride chemicals dosing plant.
2. heavy metal-polluted acid waste water treatment system according to claim 1, which is characterized in that the reuse pool is connected with Sour chemicals dosing plant.
3. heavy metal-polluted acid waste water treatment system according to claim 1, which is characterized in that first reactive tank, Two reactive tanks, third reactive tank, the 4th reactive tank and the 5th reactive tank are connected separately with pH auto-controlling apparatus.
4. heavy metal-polluted acid waste water treatment system according to claim 1, which is characterized in that first reactive tank, It is connected separately with blender in two reactive tanks, third reactive tank, the 4th reactive tank and the 5th reactive tank.
5. heavy metal-polluted acid waste water treatment system according to claim 1, which is characterized in that set in the zeolite filter There is natural crystal, the specific surface area of the natural crystal is 500~1000m2/kg。
CN201410610526.1A 2014-11-03 2014-11-03 Heavy metal-polluted acid waste water treatment system Active CN105621725B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106007074A (en) * 2016-07-04 2016-10-12 广西壮族自治区环境保护科学研究院 Lead-zinc smelting wastewater treatment method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004045740A1 (en) * 2002-11-21 2004-06-03 K.K. Ysd Purification agent for wastewater and sludge water
CN102295372A (en) * 2011-05-18 2011-12-28 山东恒邦冶炼股份有限公司 Method for treating acidic smelting waste water containing high arsenic and heavy metal ions
CN104045181A (en) * 2014-05-08 2014-09-17 昆明有色冶金设计研究院股份公司 Waste acid treatment system and method
CN204097248U (en) * 2014-11-03 2015-01-14 江苏巨达环保科技有限公司 Heavy metal-polluted acid Waste Water Treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004045740A1 (en) * 2002-11-21 2004-06-03 K.K. Ysd Purification agent for wastewater and sludge water
CN102295372A (en) * 2011-05-18 2011-12-28 山东恒邦冶炼股份有限公司 Method for treating acidic smelting waste water containing high arsenic and heavy metal ions
CN104045181A (en) * 2014-05-08 2014-09-17 昆明有色冶金设计研究院股份公司 Waste acid treatment system and method
CN204097248U (en) * 2014-11-03 2015-01-14 江苏巨达环保科技有限公司 Heavy metal-polluted acid Waste Water Treatment

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