CN103449670B - System for treating acidic industrial wastewater - Google Patents
System for treating acidic industrial wastewater Download PDFInfo
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- CN103449670B CN103449670B CN201310401393.2A CN201310401393A CN103449670B CN 103449670 B CN103449670 B CN 103449670B CN 201310401393 A CN201310401393 A CN 201310401393A CN 103449670 B CN103449670 B CN 103449670B
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- reaction tank
- artificial swamp
- cellular concrete
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- concrete reaction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a system for treating acidic industrial wastewater. The system comprises a sediment regulation tank, a porous concrete reaction tank, an artificial wetland and a water outlet well, wherein the upper part of the sediment regulation tank is communicated with the lower part of the porous concrete reaction tank through a first communicating pipe; the upper part of the porous concrete reaction tank is communicated with the upper part of the artificial wetland through a second communication pipe; the lower part of the artificial wetland and the lower part of the water outlet well are communicated through a third communicating pipe. The sediment regulation tank, the porous concrete reaction tank, the artificial wetland and the water outlet well are sequentially reduced in arrangement height. The system disclosed by the invention is high in treatment efficiency on the acidic industrial wastewater, good in ecological benefit and low in maintenance and operation cost.
Description
Technical field
The present invention relates to technical field of sewage, especially relate to a kind of system for the treatment of acidic industrial effluent.
Background technology
Acid waste water is the common form of trade effluent, mainly from industries such as mine, metallurgy, plating, process hides and medicine.The toxic metal of Extreme acid, a large amount and abundant SO
4 2-content is the key character of this type of waste water.Acid waste water can corrode drainage pipeline and structures, is directly entered environment if do not administered, and can make water quality acidifying gradually, heavy metals exceeding standard, harm the crops and hydrobiont, carry out harmless treatment before therefore must arranging outside.
The method of current process acidic industrial effluent is numerous, specifically comprises chemical neutralization method, absorption method, microbial method etc.Wherein, dispensing neutralisation is the method for traditional treatment of acidic wastewater, and neutralizing agent is generally with lime or Wingdale.Next is absorption method, and it utilizes porous solid matter, makes one or more materials in water be attracted to solid surface thus make it remove.At present, conventional sorbent material mainly contains gac, flyash, red mud, natural slag, permutite, wilkinite and sepiolite etc., and the adsorption mechanism of different sorbent material is not quite similar, and effect is also variant.
More concerned acidic water treatment process also has sulphate reducing bacteria (SRB) method both at home and abroad.He is proposed by the M. Kate (1997) of the U.S. the earliest, applies natural sulphur cycle reaction principle, and utilize SRB to be removed for sulfide or elemental sulfur are also final by sulfate conversion, it also has good neutralizing effect to sour water simultaneously.
Except the methods such as neutralization precipitation, absorption and SRB, electrolysis, electrodialysis, exchange resin method, ion exchange method and solvent extraction etc. are also usually used in the middle of the improvement of acid waste water.But aforesaid method all has weak point, the dosage of neutralisation neutralizing agent is not easy to grasp, and makes draining pH value unstable and cost is high, and its follow-up disengaging time is long, and floor space is large.The most frequently used adsorbent activity carbon price of absorption method is very expensive, and not high to organic processing efficiency.Srb assay is often subject to the restriction of high density metallic pollution, also reduces its service efficiency.And the methods such as electrolysis, electrodialysis, ion-exchange and solvent extraction, the defect such as ubiquity processing condition are strict, processing cost is high and heavy metals removal is incomplete.
Therefore, finding a kind of economical and effective, method that technically reliable and being easy to is applied, is urgent problem in acidic industrial effluent governance process.
Summary of the invention
Not enough for prior art, technical problem to be solved by this invention is to provide a kind of system for the treatment of acidic industrial effluent, the object that sewage treating efficiency is high, profitable on ecology to reach, running cost is low.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of system for the treatment of acidic industrial effluent, comprise sedimentary adjustive pool, cellular concrete reaction tank, artificial swamp, wet well, be connected by the first communicating pipe between described sedimentary adjustive pool top with cellular concrete reaction tank bottom, described cellular concrete reaction tank top is connected by the second communicating pipe with between artificial swamp top, and described artificial swamp bottom is connected by third connecting pipe with between wet well bottom.
Further, the height that described sedimentary adjustive pool, cellular concrete reaction tank, artificial swamp, wet well are arranged reduces successively.
Be provided with effluent weir in described sedimentary adjustive pool, first communicating pipe one end link in effluent weir.
The porosity of the cellular concrete in described cellular concrete reaction tank is 15-30%, ultimate compression strength is 2.12-4.58Mpa.
Described artificial swamp is vertical current constructed wetland, and the matrix of vertical current constructed wetland is down followed successively by from top: layer of sand, gravel bed, pebbles layer, is provided with the water distributor be connected with the second communicating pipe in layer of sand.
Described artificial swamp has been planted wetland plant, described wetland plant is reed, beach wormwood wormwood artemisia, calamus, Scirpus tabernaemontani one wherein, or the combination of several plant.
The stromal thickness of described artificial swamp is 0.8-1.0m.
Described gravel bed is divided into two-layer up and down, and the particle diameter of upper strata gravel is less than the particle diameter of lower floor's gravel.
Described first communicating pipe, the second communicating pipe, third connecting pipe and water distributor are pvc pipe.
Surrounding barricade and the bottom of described cellular concrete reaction tank and artificial swamp are equipped with impervious barrier.
The present invention compared with prior art, has the following advantages:
1, by cellular concrete and artificial swamp combination, acidic industrial effluent is processed, use physics, chemistry, biological method to reach the object efficiently processed sour water;
2, without the need to add medicament, by gravity maintain run, power consumption is few, safeguard and working cost low;
3, sewage absorbs Sum decomposition by wetland plant in wetland, and wetland plant also can play afforests effect that is attractive in appearance, environment purification;
4, the treatment system of this acidic industrial effluent belongs to Ecological Disposal category, profitable on ecology.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification sheets and the mark in figure are briefly described:
Fig. 1 is that the System planes of process acidic industrial effluent of the present invention arranges schematic diagram.
Fig. 2 is the system architecture schematic diagram of process acidic industrial effluent of the present invention.
In figure: 1. sedimentary adjustive pool, 11. effluent weirs, 2. cellular concrete reaction tank, 21. cellular concretes, 3. artificial swamp, 31. water distributors, 32. wetland plants, 33. layers of sand, 34. gravel beds, 35. pebbles layers, 4. wet well.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
As depicted in figs. 1 and 2, for the treatment of the ecosystem of acidic industrial effluent, without the need to adding medicament, this system comprises sedimentary adjustive pool 1, cellular concrete reaction tank 2, artificial swamp 3, wet well 4 by being connected successively communicating pipe; Be specially, be connected by the first communicating pipe between sedimentary adjustive pool 1 top with cellular concrete reaction tank 2 bottom, be connected by the second communicating pipe between cellular concrete reaction tank 2 top with artificial swamp 3 top, be connected by third connecting pipe between artificial swamp 3 bottom with wet well 4 bottom.
The height that sedimentary adjustive pool 1, cellular concrete reaction tank 2, artificial swamp 3, wet well 4 are arranged reduces successively.Acidic industrial effluent is successively by sedimentary adjustive pool, cellular concrete reaction tank, artificial swamp, and by gravity circulation, power consumption is few, safeguard and working cost low.
Be provided with effluent weir 11 in sedimentary adjustive pool 1, first communicating pipe one end link in effluent weir 11.Acidic industrial effluent stops certain hour through sedimentary adjustive pool precipitation, and remove larger suspended substance, partial organic substances and floating matter, sedimentation time is 2.0-3.0 hour, completes preliminary sedimentation; After precipitation, clear water flows out from effluent weir 11, flows in cellular concrete reaction tank 2 through the first communicating pipe.
The surrounding barricade of cellular concrete reaction tank 2 and bottom are equipped with impervious barrier, and in cellular concrete reaction tank, be provided with square or circular cellular concrete 21, the porosity of cellular concrete 21 is 15-30%, ultimate compression strength is 2.12-4.58Mpa, water-in 10cm place above bottom of cellular concrete reaction tank side, cellular concrete reaction tank opposite side water outlet 30cm place above cellular concrete.The clear water of water inlet for flowing out from effluent weir in sedimentary adjustive pool 11, water inlet stops 8-12h in cellular concrete reaction tank, discharge through water outlet after completing acid-base neutralisation, part heavy metal adsorption and Adsorption of Organic Degradation, flow into artificial swamp through the second communicating pipe.
Artificial swamp 3 surrounding barricade and bottom are equipped with impervious barrier.Artificial swamp is vertical current constructed wetland, the stromal thickness of artificial swamp is 0.8-1.0m, the matrix of vertical current constructed wetland is down followed successively by from top: layer of sand 33, gravel bed 34, pebbles layer 35, and the water distributor 31 be connected with the second communicating pipe is placed in the dark sand bed of 5cm.Wherein, gravel bed 34 is divided into two-layer up and down, and the particle diameter of upper strata gravel is less than the particle diameter of lower floor's gravel.Sand layer thickness is 15cm, particle diameter 5-10mm; Upper strata gravel thickness is 25cm, particle diameter 10-20mm; Lower floor's gravel thickness is 25cm, particle diameter 30-50mm; Pebbles layer thickness is 15cm, particle diameter 50-100mm.And wetland plant 32 of having planted on artificial swamp, described wetland plant 32 is reed, beach wormwood wormwood artemisia, calamus, Scirpus tabernaemontani one wherein, or the combination of several plant.
Artificial swamp water inlet is the water outlet of described cellular concrete reaction tank, through having the water distributor water distribution of even through hole distribution; Artificial swamp by the combined reaction process of physics, chemistry, biology and plant by water can settle solids, colloidalmaterial, BOD, N, P, heavy metal, hardly degraded organic substance, the removal such as bacterium and virus, there is powerful multifunctional purifying ability, finally, water outlet is collected by pebbles layer, and flow into and the wet well outside the artificial swamp communicated bottom artificial swamp, qualified discharge after clear water flows out from wet well.
First communicating pipe, the second communicating pipe, third connecting pipe and water distributor 31 are pvc pipe, reduce system cost.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that design of the present invention and technical scheme are carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (8)
1. the system for the treatment of acidic industrial effluent, it is characterized in that: comprise sedimentary adjustive pool (1), cellular concrete reaction tank (2), artificial swamp (3), wet well (4), be connected by the first communicating pipe between described sedimentary adjustive pool (1) top with cellular concrete reaction tank (2) bottom, described cellular concrete reaction tank (2) top is connected by the second communicating pipe with between artificial swamp (3) top, be connected by third connecting pipe between described artificial swamp (3) bottom with wet well (4) bottom, the height that described sedimentary adjustive pool (1), cellular concrete reaction tank (2), artificial swamp (3), wet well (4) are arranged reduces successively, be provided with effluent weir (11) in described sedimentary adjustive pool (1), first communicating pipe one end link in effluent weir (11).
2. as claimed in claim 1 for the treatment of the system of acidic industrial effluent, it is characterized in that: the porosity of the cellular concrete (21) in described cellular concrete reaction tank (2) is 15-30%, ultimate compression strength is 2.12-4.58Mpa.
3. as claimed in claim 1 for the treatment of the system of acidic industrial effluent, it is characterized in that: described artificial swamp (3) is vertical current constructed wetland, the matrix of vertical current constructed wetland is down followed successively by from top: layer of sand (33), gravel bed (34), pebbles layer (35), is provided with the water distributor (31) be connected with the second communicating pipe in layer of sand (33).
4. as claimed in claim 3 for the treatment of the system of acidic industrial effluent, it is characterized in that: wetland plant (32) that described artificial swamp (3) has been planted, described wetland plant (32) is reed, beach wormwood wormwood artemisia, calamus, Scirpus tabernaemontani one wherein, or the combination of several plant.
5. as claimed in claim 3 for the treatment of the system of acidic industrial effluent, it is characterized in that: the stromal thickness of described artificial swamp (3) is 0.8-1.0m.
6. as claimed in claim 3 for the treatment of the system of acidic industrial effluent, it is characterized in that: described gravel bed (34) is divided into two-layer up and down, the particle diameter of upper strata gravel is less than the particle diameter of lower floor's gravel.
7. as described in any one of claim 3 to 6 for the treatment of the system of acidic industrial effluent, it is characterized in that: described first communicating pipe, the second communicating pipe, third connecting pipe and water distributor (31) are pvc pipe.
8. as described in any one of claim 1 to 6 for the treatment of the system of acidic industrial effluent, it is characterized in that: surrounding barricade and the bottom of described cellular concrete reaction tank (2) and artificial swamp (3) are equipped with impervious barrier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310401393.2A CN103449670B (en) | 2013-09-05 | 2013-09-05 | System for treating acidic industrial wastewater |
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| CN201310401393.2A CN103449670B (en) | 2013-09-05 | 2013-09-05 | System for treating acidic industrial wastewater |
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| CN103449670A CN103449670A (en) | 2013-12-18 |
| CN103449670B true CN103449670B (en) | 2015-01-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105621819B (en) * | 2016-04-01 | 2018-03-16 | 湖南艾布鲁环保科技有限公司 | One heavy metal species Tailings Dam percolate multiplexed combination ecological treatment system and method |
| CN110194652A (en) * | 2019-05-23 | 2019-09-03 | 中国电建集团华东勘测设计研究院有限公司 | A kind of haydite matrix for artificial swamp and preparation method thereof, purposes |
| CN110734145A (en) * | 2019-11-28 | 2020-01-31 | 云南大学 | ecological wetland system with bodies of ore-collecting mountain wastewater treatment and plant residue treatment and use method thereof |
| CN113072191B (en) * | 2021-04-22 | 2022-06-07 | 山东大学 | Iron-reinforced sulfate-removal constructed wetland system and use method and application thereof |
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| CN102701534A (en) * | 2012-06-25 | 2012-10-03 | 西安科技大学 | Ecological treatment method for acid mine water of coal mine |
| CN202829782U (en) * | 2012-09-12 | 2013-03-27 | 湘潭保利光电测控科技有限公司 | Integrated industrial wastewater treatment system |
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