CN104211225A - Multiple complex treatment method for heavy metal sewage - Google Patents
Multiple complex treatment method for heavy metal sewage Download PDFInfo
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- CN104211225A CN104211225A CN201410462181.XA CN201410462181A CN104211225A CN 104211225 A CN104211225 A CN 104211225A CN 201410462181 A CN201410462181 A CN 201410462181A CN 104211225 A CN104211225 A CN 104211225A
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Abstract
The invention discloses a multiple complex treatment method for heavy metal sewage, which specifically comprises the following steps: putting sewage into a pH value regulating tank, regulating the pH value of the sewage to 5.5-6.5 with mixed acid of tartaric acid, oxalic acid, malic acid and citric acid, and then regulating the pH value to neutral with quicklime; introducing the sewage passing through a reaction tower into a precipitation tank, adding inorganic heavy metal adsorbent thereinto, introducing the sewage into a pipeline mixer, and adding organic heavy metal adsorbent; and transferring the sewage in the pipeline mixer into a solid-liquid separator, precipitating and settling heavy metal-containing solid impurities in the sewage on the bottom of the solid-liquid separator, and discharging liquid in the sewage passing through the solid-liquid separator. According to the method disclosed by the invention, the sewage is pretreated by using the four kinds of carboxylic acid, and then various heavy metals in the heavy metal sewage are thoroughly adsorbed by the well-designed organic heavy metal adsorbent and inorganic heavy metal adsorbent, so that a remarkable effect is achieved.
Description
Technical field
The invention belongs to a kind for the treatment of process of commercial metal waste water, be specially a kind of MULTIPLE COMPOSITE treatment process of heavy metal containing sewage.
Background technology
In much mechanical means processing, manufacturing concern, the enterprises such as such as plating, five metals, wiring board production, in the production waste that these enterprises discharge, a lot of containing a large amount of heavy metals, heavy metal is often referred to the metal that proportion is greater than 4 or 5, about have 45 kinds, as copper, lead, zinc, iron, brill, nickel, vanadium, girl, load, admire, manganese, good fortune, mercury, tungsten, aluminium, gold and silver etc.; Although the heavy metals such as manganese, copper, zinc are the trace elements needed for vital movement, but institute such as most of heavy metal vital movement as non-in mercury, lead, good fortune etc. is necessary, and all heavy metals to exceed finite concentration all poisonous to human body, if do not processed the sewage that these contain heavy metal, make it directly be emitted in physical environment, it will cause serious heavy metal environmental pollution.
Heavy metal contamination hazard rating depends on the concentration that heavy metal exists in environment, food and organism and chemical form, heavy metal is generally extensively present in occurring in nature with natural concentration, but because the exploitation of mankind's heavy metal, smelting, processing and business manufacturing activities mouth benefit increase, many heavy metals such as lead, mercury, good fortune, brill etc. are caused to enter in air, water, soil, cause serious environmental pollution, with the heavy metal that various chemical state or chemical form exist, will retain, accumulate and move after entered environment or the ecosystem, work the mischief.As the heavy metal of discharging with waste water, even if concentration is little, also can accumulates in algae and bed mud, be adsorbed by the body surface of fish and shellfish, produce food chain and concentrate, thus cause public hazards.
On the other hand, if the direct discharge of these sewage containing heavy metal can cause very large waste again, if these heavy metals can be reclaimed, re-use after processing, not only can cut the waste, and also can produce considerable economic benefit.
For general enterprises, the treatment process of its heavy metal containing sewage adopted is relatively backward, and treated sewage is difficult to the emission standard reaching national regulation, if adopt advanced equipment, then cost is too high, and general enterprises is difficult to bear.
Summary of the invention
The object of the invention is the MULTIPLE COMPOSITE treatment process that a kind of more simple, economic, safe and effective heavy metal containing sewage is provided for above-mentioned prior art Problems existing.
For achieving the above object, the invention provides following technical scheme:
A MULTIPLE COMPOSITE treatment process for heavy metal containing sewage, concrete steps are as follows:
(1) sewage is put into pH value regulating tank, first use the mixing acid of the tartrate of by volume 1-2: 1-2: 1-2: 1-2, oxalic acid, oxysuccinic acid, citric acid that the pH value of sewage is adjusted to 5.5 ~ 6.5, then regulate pH to neutral with unslaked lime;
(2) secondly, the sewage after regulating is introduced reaction tower, and is filled with air in reaction tower, in reaction tower, add catalyzer, catalyzer is iron powder, gac, makes the heavy metal ion in sewage be reduced, becomes unbound state heavy metal;
(3) then, the sewage in reaction tower being introduced in settling tank, toward wherein adding inorganic heavy metal sorbent material, and fully stirring; Described inorganic heavy metal sorbent material according to the component of weight part is: 50 ~ 60 parts, diatomite, 30 ~ 40 parts, tourmalinite, 40 ~ 50 parts, sulfuric acid, phosphatase 24 0 ~ 50 part, 40 ~ 50 parts, nitric acid; Cross 80 ~ 120 mesh sieves after diatomite and tourmalinite being pulverized, then join in the mixing acid of sulfuric acid, phosphoric acid and nitric acid, at 1000 DEG C-1200 DEG C, add 1-2 hour, obtain inorganic heavy metal sorbent material, stored dry is for subsequent use;
(4) by sewage inducting tubes road mixing tank, add organic heavy metal sorbent material, and fully stir; The preparation method of described organic heavy metal sorbent material is: collect vegetables or fruit residue and pulverize, blanching 15 ~ 20 minutes in the hot water of 80 ~ 90 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 10.0 ~ 12.0, is placed in 55 ~ 65 DEG C of thermostat water bath process 1 ~ 2h and obtains Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 55 ~ 65 DEG C of baking ovens warm air drying 12 ~ 24h; Cross 80 ~ 120 mesh sieves after pulverizing, stored dry is for subsequent use;
(5) then make the sewage in line mixer enter solid-liquid separator, the heavy metal solid impurity that contains in sewage is deposited on bottom solid-liquid separator through precipitation, and the liquid in sewage is discharged after solid-liquid separator.
As the further scheme of the present invention, the volume ratio of described tartrate, oxalic acid, oxysuccinic acid and citric acid is 1: 1: 1: 1.
As the further scheme of the present invention, the described inorganic heavy metal sorbent material of step (3) according to the component of weight part is: 55 parts, diatomite, 35 parts, tourmalinite, 45 parts, sulfuric acid, phosphatase 24 5 parts, 45 parts, nitric acid.
As the further scheme of the present invention, the preparation method of the described organic heavy metal sorbent material of step (4) is: collect vegetables or fruit residue and pulverize, blanching 18 minutes in the hot water of 85 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 11, is placed in 60 DEG C of thermostat water baths and processes 1.5h and obtain Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 60 DEG C of baking ovens the dry 18h of warm air; Cross 100 mesh sieves after pulverizing, stored dry is for subsequent use.
Beneficial effect: the inventive method first adopts surrounding carboxylic acid to carry out pre-treatment to sewage, has then adsorbed each heavy metal species in heavy metal containing sewage, successful thoroughly by well-designed organic heavy metal sorbent material and inorganic heavy metal sorbent material.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A MULTIPLE COMPOSITE treatment process for heavy metal containing sewage, concrete steps are as follows:
(1) sewage is put into pH value regulating tank, first use the mixing acid of the tartrate of by volume 1: 1: 2: 2, oxalic acid, oxysuccinic acid, citric acid that the pH value of sewage is adjusted to 5.5, then regulate pH to neutral with unslaked lime;
(2) secondly, the sewage after regulating is introduced reaction tower, and is filled with air in reaction tower, in reaction tower, add catalyzer, catalyzer is iron powder, gac, makes the heavy metal ion in sewage be reduced, becomes unbound state heavy metal;
(3) then, the sewage in reaction tower being introduced in settling tank, toward wherein adding inorganic heavy metal sorbent material, and fully stirring; Described inorganic heavy metal sorbent material according to the component of weight part is: 50 parts, diatomite, 30 parts, tourmalinite, 40 parts, sulfuric acid, phosphatase 24 0 part, 40 parts, nitric acid; Cross 80 mesh sieves after diatomite and tourmalinite being pulverized, then join in the mixing acid of sulfuric acid, phosphoric acid and nitric acid, add 1 hour at 1000 DEG C, obtain inorganic heavy metal sorbent material, stored dry is for subsequent use;
(4) by sewage inducting tubes road mixing tank, add organic heavy metal sorbent material, and fully stir; The preparation method of described organic heavy metal sorbent material is: collect vegetables or fruit residue and pulverize, blanching 15 minutes in the hot water of 80 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 10.0, is placed in 55 DEG C of thermostat water baths and processes 1h and obtain Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 55 DEG C of baking ovens the dry 12h of warm air; Cross 80 mesh sieves after pulverizing, stored dry is for subsequent use;
(5) then make the sewage in line mixer enter solid-liquid separator, the heavy metal solid impurity that contains in sewage is deposited on bottom solid-liquid separator through precipitation, and the liquid in sewage is discharged after solid-liquid separator.
Embodiment 2
A MULTIPLE COMPOSITE treatment process for heavy metal containing sewage, concrete steps are as follows:
(1) sewage is put into pH value regulating tank, first use the mixing acid of the tartrate of by volume 1: 1: 1: 1, oxalic acid, oxysuccinic acid, citric acid that the pH value of sewage is adjusted to 6, then regulate pH to neutral with unslaked lime;
(2) secondly, the sewage after regulating is introduced reaction tower, and is filled with air in reaction tower, in reaction tower, add catalyzer, catalyzer is iron powder, gac, makes the heavy metal ion in sewage be reduced, becomes unbound state heavy metal;
(3) then, the sewage in reaction tower being introduced in settling tank, toward wherein adding inorganic heavy metal sorbent material, and fully stirring; Described inorganic heavy metal sorbent material according to the component of weight part is: 55 parts, diatomite, 35 parts, tourmalinite, 45 parts, sulfuric acid, phosphatase 24 5 parts, 45 parts, nitric acid; Cross 100 mesh sieves after diatomite and tourmalinite being pulverized, then join in the mixing acid of sulfuric acid, phosphoric acid and nitric acid, add 1.5 hours at 1100 DEG C, obtain inorganic heavy metal sorbent material, stored dry is for subsequent use;
(4) by sewage inducting tubes road mixing tank, add organic heavy metal sorbent material, and fully stir; The preparation method of described organic heavy metal sorbent material is: collect vegetables or fruit residue and pulverize, blanching 18 minutes in the hot water of 85 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 11.0, is placed in 60 DEG C of thermostat water baths and processes 1.5h and obtain Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 60 DEG C of baking ovens the dry 18h of warm air; Cross 100 mesh sieves after pulverizing, stored dry is for subsequent use;
(5) then make the sewage in line mixer enter solid-liquid separator, the heavy metal solid impurity that contains in sewage is deposited on bottom solid-liquid separator through precipitation, and the liquid in sewage is discharged after solid-liquid separator.
Embodiment 3
A MULTIPLE COMPOSITE treatment process for heavy metal containing sewage, concrete steps are as follows:
(1) sewage is put into pH value regulating tank, first use the mixing acid of the tartrate of by volume 2: 2: 1: 1, oxalic acid, oxysuccinic acid, citric acid that the pH value of sewage is adjusted to 6.5, then regulate pH to neutral with unslaked lime;
(2) secondly, the sewage after regulating is introduced reaction tower, and is filled with air in reaction tower, in reaction tower, add catalyzer, catalyzer is iron powder, gac, makes the heavy metal ion in sewage be reduced, becomes unbound state heavy metal;
(3) then, the sewage in reaction tower being introduced in settling tank, toward wherein adding inorganic heavy metal sorbent material, and fully stirring; Described inorganic heavy metal sorbent material according to the component of weight part is: 60 parts, diatomite, 40 parts, tourmalinite, 50 parts, sulfuric acid, phosphoric acid 50 parts, 50 parts, nitric acid; Cross 120 mesh sieves after diatomite and tourmalinite being pulverized, then join in the mixing acid of sulfuric acid, phosphoric acid and nitric acid, add 2 hours at 1200 DEG C, obtain inorganic heavy metal sorbent material, stored dry is for subsequent use;
(4) by sewage inducting tubes road mixing tank, add organic heavy metal sorbent material, and fully stir; The preparation method of described organic heavy metal sorbent material is: collect vegetables or fruit residue and pulverize, blanching 20 minutes in the hot water of 90 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 12.0, is placed in 65 DEG C of thermostat water baths and processes 2h and obtain Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 65 DEG C of baking ovens the dry 24h of warm air; Cross 120 mesh sieves after pulverizing, stored dry is for subsequent use;
(5) then make the sewage in line mixer enter solid-liquid separator, the heavy metal solid impurity that contains in sewage is deposited on bottom solid-liquid separator through precipitation, and the liquid in sewage is discharged after solid-liquid separator.
Claims (4)
1. a MULTIPLE COMPOSITE treatment process for heavy metal containing sewage, it is characterized in that, concrete steps are as follows:
(1) sewage is put into pH value regulating tank, first use the mixing acid of the tartrate of by volume 1-2: 1-2: 1-2: 1-2, oxalic acid, oxysuccinic acid, citric acid that the pH value of sewage is adjusted to 5.5 ~ 6.5, then regulate pH to neutral with unslaked lime;
(2) secondly, the sewage after regulating is introduced reaction tower, and is filled with air in reaction tower, in reaction tower, add catalyzer, catalyzer is iron powder, gac, makes the heavy metal ion in sewage be reduced, becomes unbound state heavy metal;
(3) then, the sewage in reaction tower being introduced in settling tank, toward wherein adding inorganic heavy metal sorbent material, and fully stirring; Described inorganic heavy metal sorbent material according to the component of weight part is: 50 ~ 60 parts, diatomite, 30 ~ 40 parts, tourmalinite, 40 ~ 50 parts, sulfuric acid, phosphatase 24 0 ~ 50 part, 40 ~ 50 parts, nitric acid; Cross 80 ~ 120 mesh sieves after diatomite and tourmalinite being pulverized, then join in the mixing acid of sulfuric acid, phosphoric acid and nitric acid, at 1000 DEG C-1200 DEG C, add 1-2 hour, obtain inorganic heavy metal sorbent material, stored dry is for subsequent use;
(4) by sewage inducting tubes road mixing tank, add organic heavy metal sorbent material, and fully stir; The preparation method of described organic heavy metal sorbent material is: collect vegetables or fruit residue and pulverize, blanching 15 ~ 20 minutes in the hot water of 80 ~ 90 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 10.0 ~ 12.0, is placed in 55 ~ 65 DEG C of thermostat water bath process 1 ~ 2h and obtains Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 55 ~ 65 DEG C of baking ovens warm air drying 12 ~ 24h; Cross 80 ~ 120 mesh sieves after pulverizing, stored dry is for subsequent use;
(5) then make the sewage in line mixer enter solid-liquid separator, the heavy metal solid impurity that contains in sewage is deposited on bottom solid-liquid separator through precipitation, and the liquid in sewage is discharged after solid-liquid separator.
2. the MULTIPLE COMPOSITE treatment process of heavy metal containing sewage according to claim 1, is characterized in that, the volume ratio of described tartrate, oxalic acid, oxysuccinic acid and citric acid is 1: 1: 1: 1.
3. the MULTIPLE COMPOSITE treatment process of heavy metal containing sewage according to claim 1, it is characterized in that, the described inorganic heavy metal sorbent material of step (3) according to the component of weight part is: 55 parts, diatomite, 35 parts, tourmalinite, 45 parts, sulfuric acid, phosphatase 24 5 parts, 45 parts, nitric acid.
4. the MULTIPLE COMPOSITE treatment process of heavy metal containing sewage according to claim 1, it is characterized in that, the preparation method of the described organic heavy metal sorbent material of step (4) is: collect vegetables or fruit residue and pulverize, blanching 18 minutes in the hot water of 85 DEG C; Add water and be squeezed into material slurry, filter, get the rinsing of filter residue flowing water to neutral; Being soaked in pH value is again in the sodium hydroxide solution of 11, is placed in 60 DEG C of thermostat water baths and processes 1.5h and obtain Mierocrystalline cellulose; By Mierocrystalline cellulose with flowing water rinsing to neutral, after draining in 60 DEG C of baking ovens the dry 18h of warm air; Cross 100 mesh sieves after pulverizing, stored dry is for subsequent use.
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| CN201410462181.XA CN104211225A (en) | 2014-09-12 | 2014-09-12 | Multiple complex treatment method for heavy metal sewage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474316A (en) * | 2017-07-28 | 2017-12-15 | 广西汇智生产力促进中心有限公司 | A kind of application of modified alta-mud |
| CN107474317A (en) * | 2017-07-28 | 2017-12-15 | 广西汇智生产力促进中心有限公司 | A kind of acid activation bentonite and its application |
| CN107522901A (en) * | 2017-07-28 | 2017-12-29 | 广西汇智生产力促进中心有限公司 | A kind of preparation method of modified alta-mud heat-resistant agent |
| CN109825302A (en) * | 2019-02-27 | 2019-05-31 | 杨沾 | A kind of municipal administration heavy-metal contaminated soil reparation liquid and preparation method thereof |
| CN112978983A (en) * | 2021-02-05 | 2021-06-18 | 中南林业科技大学 | Iron-based biochar-based heavy metal complexing wastewater treatment and recycling process thereof |
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| JP2010172853A (en) * | 2009-01-30 | 2010-08-12 | Kurita Water Ind Ltd | Boron-containing water treatment method |
| CN103073124A (en) * | 2013-01-11 | 2013-05-01 | 安徽铜冠铜箔有限公司 | Heavy metal wastewater treatment process |
| CN103723852A (en) * | 2013-12-04 | 2014-04-16 | 刘军亮 | Sewage treatment method based on inorganic and organic heavy metal absorbents |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010172853A (en) * | 2009-01-30 | 2010-08-12 | Kurita Water Ind Ltd | Boron-containing water treatment method |
| CN103073124A (en) * | 2013-01-11 | 2013-05-01 | 安徽铜冠铜箔有限公司 | Heavy metal wastewater treatment process |
| CN103723852A (en) * | 2013-12-04 | 2014-04-16 | 刘军亮 | Sewage treatment method based on inorganic and organic heavy metal absorbents |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474316A (en) * | 2017-07-28 | 2017-12-15 | 广西汇智生产力促进中心有限公司 | A kind of application of modified alta-mud |
| CN107474317A (en) * | 2017-07-28 | 2017-12-15 | 广西汇智生产力促进中心有限公司 | A kind of acid activation bentonite and its application |
| CN107522901A (en) * | 2017-07-28 | 2017-12-29 | 广西汇智生产力促进中心有限公司 | A kind of preparation method of modified alta-mud heat-resistant agent |
| CN109825302A (en) * | 2019-02-27 | 2019-05-31 | 杨沾 | A kind of municipal administration heavy-metal contaminated soil reparation liquid and preparation method thereof |
| CN112978983A (en) * | 2021-02-05 | 2021-06-18 | 中南林业科技大学 | Iron-based biochar-based heavy metal complexing wastewater treatment and recycling process thereof |
| CN112978983B (en) * | 2021-02-05 | 2022-04-19 | 中南林业科技大学 | Iron-based biochar-based heavy metal complexing wastewater treatment and recycling process thereof |
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Application publication date: 20141217 |