CN109626531A - The processing method of tungsten ore production waste water - Google Patents
The processing method of tungsten ore production waste water Download PDFInfo
- Publication number
- CN109626531A CN109626531A CN201811649829.9A CN201811649829A CN109626531A CN 109626531 A CN109626531 A CN 109626531A CN 201811649829 A CN201811649829 A CN 201811649829A CN 109626531 A CN109626531 A CN 109626531A
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- waste water
- tungsten ore
- processing method
- production waste
- slag
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Removal Of Specific Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of processing methods of tungsten ore production waste water, are related to Treating Industrial Wastewater field, comprising the following steps: mix the production waste water that tungsten ore smelts each workshop section, filters pressing；Filtrate pH to 5-6 is adjusted, tungsten ore soda boiling ground-slag is broken, add water boiling, be added in filtrate, stir, stands, filtering；Filtrate pH to 8.5-10.0 is adjusted, CaCl is then added2, air blast stirring, then add FeSO4, air blast stirring, standing, filtering；It then returns to repetition step S3 when arsenic concentration, not up to discharge standard in detection filtrate and carries out removal of impurities processing, until arsenic concentration reaches national emission standard in treated filtrate.The present invention can be effectively treated tungsten ore production waste water, the heavy metal ion in waste water is effectively reduced, and reagent additive amount is reduced, waste water arsenic concentration therein after circular treatment 1-2 times can stably reach national emission standard completely, and the soda boiling slag in tungsten ore smelting is handled simultaneously, treatment effeciency is high, simple and easy.
Description
Technical field
The present invention relates to Treating Industrial Wastewater field more particularly to a kind of processing methods of tungsten ore production waste water.
Background technique
NaOH decomposition method is that tungsten mineral decomposes most important method in current Tungsten smelting.This method can effectively decompose tungsten
Mineral.Mainly the method for ion exchange is used to make the transition the sodium tungstate leachate that basic pressure digestion obtains at present, sodium tungstate is molten
Liquid is converted into ammonium tungstate solution to prepare APT product.It will lead to the generation of a large amount of alkaline waste waters during this, discharge amount is big
And complicated component, containing the various metals ion such as Ca, Fe, Cu, Mn, As, Hg, Zn, if direct emission will will lead to it is huge
Environmental pollution.Arsenic ion especially therein, the toxic dose of people are 0.01~0.052g, and lethal dose is 0.06~0.2g, because
This, needs to produce tungsten ore the metal ions such as the arsenic in waste water and is removed to reach discharge standard.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of processing methods of tungsten ore production waste water, have
Heavy metal ion in effect removal production waste water, arsenic concentration can reach discharge standard after processing.
A kind of processing method of tungsten ore production waste water proposed by the present invention, comprising the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a；
S2, the pH to 5-6 for adjusting waste water a, by tungsten ore smelt in tungsten ore soda boiling ground-slag caused by filters pressing post it is broken, Jia Shuishui
It boils, is then added in waste water a, stir, stand, filtering obtains waste water b and filter residue, and filter residue is entered soda boiling slag storage；
Arsenic concentration adjusts the pH to 8.5-10.0 of waste water b when waste water b is not up to national emission standard in S3, detection waste water b,
Then CaCl is added2, air blast stirring, then add FeSO4, air blast stirring, stand, filtering, obtain waste water c；
Arsenic concentration in S4, detection waste water c, repetition step S3 is then returned when waste water c is not up to national emission standard and is cleaned
Processing, until arsenic concentration reaches national emission standard in waste water c.
Preferably, in S2, the pH to 5-6 of waste water a is adjusted using sulfuric acid.
Preferably, in S2, the additional amount of tungsten ore soda boiling slag is 0.14-0.20kg/m3。
Preferably, in S2, tungsten ore soda boiling ground-slag is broken, adds 2-3 times of water, boiling 40-60min.
Preferably, in S2,1-2h is stirred, stands 3-5h.
Preferably, in S3, CaCl is added2, air blast stirring 1-2h, blast rate 0.4-0.6m3/min。
Preferably, in S2, FeSO is added4, air blast stirring 1-2h, blast rate 0.1-0.3m3/min。
The utility model has the advantages that decocting slag pair using tungsten ore before this present invention provides a kind of processing method of tungsten ore production waste water
Waste water is pre-processed, and CaCl is added2、FeSO4Reagent is handled.During tungsten ore decocts slag pretreated waste water, it will decoct
After the broken boiling of ground-slag, it is heavy that the effects of copper ion in manganese ion and waste water itself that contained using, mercury ion, zinc ion, is generated
It forms sediment, on the one hand reduces the content of the metal ions such as Cu in waste water mercury zinc, on the other hand, also mitigate tungsten ore and decoct this danger of slag
Dangerous waste is to the harmfulness of environment, moreover it is possible to reduce subsequent CaCl2、FeSO4The dosage of reagent；Pass through CaCl2、FeSO4Examination
Agent continues to handle to pretreated waste water, and under alkaline condition, molysite can generate the ferric arsenate of indissoluble with arsenic ion
Or iron arsenite, to remove most arsenic ion and other heavy metal ion in tungsten ore, and due to the CaCl of addition2、FeSO4
The quantity of slag of the reduction of reagent dosage, the hazardous waste generated in precipitation process also necessarily reduces, and carries out after adding reagent
Air blast stirring, and the rate for controlling air blast makes to be sufficiently mixed, react.This method is able to carry out effective place to tungsten ore production waste water
It manages, the arsenic concentration in waste water after circular treatment 1-2 times can stably reach national emission standard completely, and smelt simultaneously to tungsten ore
In soda boiling slag handled, treatment effeciency is high, simple and easy.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of processing method of tungsten ore production waste water proposed by the present invention, comprising the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a, and measurement arsenic concentration is 1020mg/L；
S2, using sulfuric acid adjust waste water a pH to 5, by tungsten ore smelt in filters pressing post generate tungsten ore soda boiling ground-slag it is broken, add
2 times of water, boiling 40min are added in waste water a, and tungsten ore soda boiling slag additional amount is 0.14kg/m3, 1h is stirred, 3h is stood, is filtered,
Waste water b and filter residue are obtained, filter residue is entered into soda boiling slag storage；
Arsenic concentration is 0.75mg/L in S3, detection waste water b, adjusts the pH to 8.5 of waste water b, CaCl is then added2, air blast stirring
1h, blast rate 0.4m3/ min, then adds FeSO4, air blast stirring 1h, blast rate 0.1m3/ min stands 2h,
Filtering, obtains waste water c；
Arsenic concentration is 0.65mg/L in S4, detection waste water c, and waste water c is returned to repetition step S3 and carries out removal of impurities processing, is measured again
Arsenic concentration is 0.42mg/L, reaches national emission standard.
Embodiment 2
A kind of processing method of tungsten ore production waste water proposed by the present invention, comprising the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a, and measurement arsenic concentration is 1110mg/L；
S2, using sulfuric acid adjust waste water a pH to 5.5, by tungsten ore smelt in filters pressing post generate tungsten ore soda boiling ground-slag it is broken,
Add 3 times of water, boiling 50min is added in waste water a, and tungsten ore soda boiling slag additional amount is 0.16kg/m3, 1.5h is stirred, 4h is stood,
Filtering, obtains waste water b and filter residue, and filter residue is entered soda boiling slag storage；
Arsenic concentration is 0.63mg/L in S3, detection waste water b, adjusts the pH to 9.0 of waste water b, CaCl is then added2, air blast stirring
1.5h, blast rate 0.47m3/ min, then adds FeSO4, air blast stirring 1.5h, blast rate 0.20m3/ min, it is quiet
2.5h is set, filters, obtains waste water c；
Arsenic concentration is 0.52mg/L in S4, detection waste water c, and waste water c is returned to repetition step S3 and carries out removal of impurities processing, is measured again
Arsenic concentration is 0.40mg/L, reaches national emission standard.
Embodiment 3
A kind of processing method of tungsten ore production waste water proposed by the present invention, comprising the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a, and measurement arsenic concentration is 950mg/L；
S2, using sulfuric acid adjust waste water a pH to 5.5, by tungsten ore smelt in filters pressing post generate tungsten ore soda boiling ground-slag it is broken,
Add 2.5 times of water, boiling 50min is added in waste water a, and tungsten ore soda boiling slag additional amount is 0.18kg/m3, 1h is stirred, is stood
3.5h, filtering, obtains waste water b and filter residue, and filter residue is entered soda boiling slag storage；
Arsenic concentration is 0.57mg/L in S3, detection waste water b, adjusts the pH to 9.5 of waste water b, CaCl is then added2, air blast stirring
1h, blast rate 0.55m3/ min, then adds FeSO4, air blast stirring 1.5h, blast rate 0.25m3/ min is stood
3h, filtering, obtains waste water c；
Arsenic concentration is 0.45mg/L in S4, detection waste water c, reaches national emission standard.
Embodiment 4
A kind of processing method of tungsten ore production waste water proposed by the present invention, comprising the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a, and measurement arsenic concentration is 985mg/L；
S2, using sulfuric acid adjust waste water a pH to 6, by tungsten ore smelt in filters pressing post generate tungsten ore soda boiling ground-slag it is broken, add
3 times of water, boiling 60min are added in waste water a, and tungsten ore soda boiling slag additional amount is 0.20kg/m3, 2h is stirred, 5h is stood, is filtered,
Waste water b and filter residue are obtained, filter residue is entered into soda boiling slag storage；
Arsenic concentration is 0.6mg/L in S3, detection waste water b, adjusts the pH to 10.0 of waste water b, CaCl is then added2, air blast stirring
2h, blast rate 0.6m3/ min, then adds FeSO4, air blast stirring 2h, blast rate 0.3m3/ min stands 3h,
Filtering, obtains waste water c；
Arsenic concentration is 0.48mg/L in S4, detection waste water c, reaches national emission standard.
Embodiment 5
A kind of processing method of tungsten ore production waste water proposed by the present invention, comprising the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a, and measurement arsenic concentration is 876mg/L；
S2, using sulfuric acid adjust waste water a pH to 6, by tungsten ore smelt in filters pressing post generate tungsten ore soda boiling ground-slag it is broken, add
3 times of water, boiling 60min are added in waste water a, and tungsten ore soda boiling slag additional amount is 0.15kg/m3, 2h is stirred, 5h is stood, is filtered,
Waste water b and filter residue are obtained, filter residue is entered into soda boiling slag storage；
Arsenic concentration is 0.41mg/L in S3, detection waste water b, reaches national emission standard.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of processing method of tungsten ore production waste water, which comprises the following steps:
S1, the production waste water mixing that tungsten ore is smelted to each workshop section, filters pressing obtain waste water a；
S2, adjust waste water a pH to 5-6, by tungsten ore smelt in filters pressing post caused by tungsten ore soda boiling ground-slag it is broken, add water
Boiling is then added in waste water a, is stirred, and is stood, and filtering obtains waste water b and filter residue, and filter residue is entered soda boiling slag storage；
Arsenic concentration adjusts the pH to 8.5-10.0 of waste water b when waste water b is not up to national emission standard in S3, detection waste water b,
Then CaCl is added2, air blast stirring, then add FeSO4, air blast stirring, stand, filtering, obtain waste water c；
Arsenic concentration in S4, detection waste water c, repetition step S3 is then returned when waste water c is not up to national emission standard and is cleaned
Processing, until arsenic concentration reaches national emission standard in waste water c.
2. the processing method of tungsten ore production waste water according to claim 1, which is characterized in that in S2, adjusted using sulfuric acid
The pH to 5-6 of waste water a.
3. the processing method of tungsten ore production waste water according to claim 1 or 2, which is characterized in that in S2, tungsten ore soda boiling slag
Additional amount be 0.14-0.20kg/m3。
4. the processing method of tungsten ore production waste water according to claim 1-3, which is characterized in that in S2, tungsten ore
Soda boiling ground-slag is broken, adds 2-3 times of water, boiling 40-60min.
5. the processing method of tungsten ore production waste water according to claim 1-4, which is characterized in that in S2, stirring
1-2h stands 3-5h.
6. the processing method of tungsten ore production waste water according to claim 1-5, which is characterized in that in S3, be added
CaCl2, air blast stirring 1-2h, blast rate 0.4-0.6m3/min。
7. the processing method of tungsten ore production waste water according to claim 1-6, which is characterized in that in S2, be added
FeSO4, air blast stirring 1-2h, blast rate 0.1-0.3m3/min。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811649829.9A CN109626531A (en) | 2018-12-30 | 2018-12-30 | The processing method of tungsten ore production waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524553A (en) * | 2022-03-16 | 2022-05-24 | 赣州八0一钨业有限公司 | Process for treating heavy metal wastewater by using alkaline-boiling tungsten slag |
-
2018
- 2018-12-30 CN CN201811649829.9A patent/CN109626531A/en active Pending
Non-Patent Citations (4)
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| 严群等: "混凝沉淀法处理含砷选矿废水", 《环境工程学报》 * |
| 何艺等: "中国钨渣产生特性及资源化利用技术研究现状", 《中国钨业》 * |
| 赵志伟等: "《磁性纳米材料及其在水处理领域中的应用》", 31 January 2018, 哈尔滨工业大学出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524553A (en) * | 2022-03-16 | 2022-05-24 | 赣州八0一钨业有限公司 | Process for treating heavy metal wastewater by using alkaline-boiling tungsten slag |
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Application publication date: 20190416 |