CN103663640A - Wastewater processing technology and apparatus capable of synchronously removing phosphates and copper ions in water - Google Patents
Wastewater processing technology and apparatus capable of synchronously removing phosphates and copper ions in water Download PDFInfo
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- CN103663640A CN103663640A CN201310656419.8A CN201310656419A CN103663640A CN 103663640 A CN103663640 A CN 103663640A CN 201310656419 A CN201310656419 A CN 201310656419A CN 103663640 A CN103663640 A CN 103663640A
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- water
- phosphoric acid
- settling tank
- acid salt
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Abstract
The invention relates to wastewater processing technology, and especially relates to a wastewater processing technology and an apparatus capable of synchronously removing phosphates and copper ions in water. The invention provides the wastewater processing technology capable of synchronously removing phosphates and copper ions in water, ferrous sulphate is used as a coagulant and added into wastewater for coagulating sedimentation. The invention also provides the wastewater processing apparatus capable of synchronously removing phosphates and copper ions in water. The beneficial effects comprise that by adding ferrous sulphate into wastewater as the coagulant and because ferrous sulphate is low in price, the cost is relatively low, the operation is simple and the removing efficiency is relatively high; waste is used to treat waste, and metal ion catalysts originally in wastewater is utilized for effectively oxidizing ferrous sulphate and further for removing phosphates; and copper is synchronously removed in a co-precipitation manner after metal Cu is utilized to catalyze ferrous oxidation.
Description
Technical field
The present invention relates to waste water treatment process, relate in particular to waste water treatment process and the device of phosphoric acid salt and cupric ion in a kind of synchronous removal water.
Background technology
The generation of electroplating wastewater is mainly due in the process that electronic original part is electroplated, utilize electrochemical method metal and nonmetallic surface to be decorated, protected and obtain the waste water producing in the process of some new capability, in such waste water, contain the metal ions such as phosphoric acid salt and cupric ion simultaneously.
At present, for the phosphoric acid salt coexisting in electroplating wastewater and heavy metal copper ion, process this two pollutant separately conventionally at electroplating wastewater processing station.The treatment process of copper-containing wastewater comprises calcium salt precipitation method, sulphide precipitation, sour water solution etc.For simple cupric ion, generally adopt calcium salt precipitation method treatment process; And cuprammonium complexing waste water generally first adopts sulfide to carry out contact break and coagulating sedimentation, then enter the pH readjustment pond of organic wastewater treating system or directly discharge after break point chlorination removes ammonia.Adopt calcium salt precipitation method copper removal, easily cause water outlet pH higher, need follow-up time adjust pH, cause working cost to increase, sludge output is larger simultaneously, increases mud subsequent disposal difficulty; And adopt sulfide except process for copper, because the dosage of sulfide is wayward, excessive sulfide may cause secondary pollution.The treatment process of phosphorus-containing wastewater mainly comprises multistage Fenton process, and calcium salt precipitation method.Though multistage Fenton process efficiency is higher, added amount of chemical is large, and technical process unit relative complex.Calcium salt precipitation method dephosphorization, though cost is lower, operation is simple, and the pH value amplitude of accommodation is large, and chemical sludge output is large, especially all the more so for low pH high phosphate concentration waste water.
Summary of the invention
In order to solve the problems of the prior art, the invention provides waste water treatment process and the device of phosphoric acid salt and cupric ion in a kind of synchronous removal water of economical and efficient.
The invention provides the waste water treatment process of phosphoric acid salt and cupric ion in a kind of synchronous removal water, to adding ferrous sulfate in waste water, as coagulating agent, carry out coagulating sedimentation.
As a further improvement on the present invention, having under the environment of dissolved oxygen, utilizing cupric ion efficient catalytic ferrous oxidation intrinsic in waste water to form newborn ferric iron, on the one hand, newborn ferric iron is combined with phosphate radical and generates tertiary iron phosphate precipitation, thereby remove the phosphoric acid salt in waste water; On the other hand, under certain suitable iron, phosphorus, copper mol ratio condition, newborn ferric iron and cupric and ortho-phosphoric acid root can form the co-precipitation of tertiary iron phosphate copper, thereby remove the cupric in waste water and further remove phosphoric acid salt.In addition, the chemically precipitated sludge of backflow aligns phosphate radical and cupric ion also has certain adsorption, by sludge reflux, further removes phosphoric acid salt and the cupric in waste water.
As a further improvement on the present invention, comprise the following steps:
S1: inject waste water to coagulation basin;
S2: having under the environment of dissolved oxygen, add ferrous sulfate as coagulating agent to coagulation basin;
S3: the water of coagulation basin is precipitated discharged to settling tank;
S4: by the sludge reflux of settling tank to coagulation basin.
The present invention also provides the wastewater treatment equipment of phosphoric acid salt and cupric ion in a kind of synchronous removal water, comprise coagulation basin and settling tank, wherein, described coagulation basin is connected with water inlet pipe and ferrous sulfate adds mechanism, the water side of described coagulation basin is connected with described settling tank, described settling tank is connected with water shoot, is connected with sludge reflux pipeline between described coagulation basin, settling tank.
As a further improvement on the present invention, described ferrous sulfate adds mechanism and comprises adding of agent pump and the ferrous sulfate bin being connected with described adding of agent pump.
As a further improvement on the present invention, described sludge reflux pipeline comprises sludge reflux pump, and the input terminus of described sludge reflux pump is connected with described settling tank, and described sludge reflux delivery side of pump is connected with described coagulation basin.
As a further improvement on the present invention, described settling tank is connected with industrial sludge delivery pipe.
As a further improvement on the present invention, in described settling tank, be provided with precipitation water inlet pipe, described precipitation water inlet pipe is suspended in described settling tank, and the water side of described coagulation basin is connected with the precipitation water inlet pipe of described settling tank, and the water outlet of described precipitation water inlet pipe is positioned at the middle part of described settling tank.
The invention has the beneficial effects as follows: pass through such scheme, in waste water, add ferrous sulfate as coagulating agent, adopt cheap ferrous sulfate, cost is lower, and operation is simple, and removal efficiency is higher, utilize cupric ion efficient catalytic ferrous oxidation intrinsic in waste water to form newborn ferric iron, on the one hand, newborn ferric iron is combined with phosphate radical and generates tertiary iron phosphate precipitation, thereby remove the phosphoric acid salt in waste water; On the other hand, under certain suitable iron, phosphorus, copper mol ratio condition, newborn ferric iron and cupric and ortho-phosphoric acid root can form the co-precipitation of tertiary iron phosphate copper, thereby remove the cupric in waste water and further remove phosphoric acid salt.In addition, the chemically precipitated sludge of backflow aligns phosphate radical and cupric ion also has certain adsorption, by sludge reflux, further removes phosphoric acid salt and the cupric in waste water.
This technique has following two aspect advantages: on the one hand, the treatment of wastes with processes of wastes against one another, utilizes metal ion catalyst intrinsic in waste water, after efficient oxidation ferrous iron, removes phosphoric acid salt; On the other hand, synchronous copper removal, after utilizing metal Cu catalysis ferrous oxidation, is removed by the mode of co-precipitation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wastewater treatment equipment of phosphoric acid salt and cupric ion in a kind of synchronous removal water of the present invention;
Fig. 2 is the removal schematic diagram of the waste water treatment process of phosphoric acid salt and cupric ion in a kind of synchronous removal water of the present invention.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the present invention is further described.
Drawing reference numeral in Fig. 1 to Fig. 2 is: coagulation basin 1; Settling tank 2; Precipitation water inlet pipe 21; Water inlet pipe 3; Ferrous sulfate adds mechanism 4; Adding of agent pump 41; Sludge reflux pipeline 5; Sludge reflux pump 51; Water shoot 6; Industrial sludge delivery pipe 7.
As shown in Figure 2, the waste water treatment process of phosphoric acid salt and cupric ion in a kind of synchronous removal water, carries out coagulating sedimentation to adding ferrous sulfate in waste water as coagulating agent.
As shown in Figure 2, having under the environment of dissolved oxygen, utilizing cupric ion efficient catalytic ferrous oxidation intrinsic in waste water to form newborn ferric iron, on the one hand, newborn ferric iron is being combined with phosphate radical and generates tertiary iron phosphate precipitation, thereby remove the phosphoric acid salt in waste water; On the other hand, under mol ratio condition, newborn ferric iron and cupric and ortho-phosphoric acid root can form the co-precipitation of tertiary iron phosphate copper, thereby remove the cupric in waste water and further remove phosphoric acid salt.
As shown in Figure 1 and Figure 2, the waste water treatment process of phosphoric acid salt and cupric ion in a kind of synchronous removal water, specifically comprises the following steps:
S1: inject waste water to coagulation basin 1;
S2: having under the environment of dissolved oxygen, add ferrous sulfate as coagulating agent to coagulation basin 1;
S3: the water of coagulation basin 1 is precipitated discharged to settling tank 2;
S4: by the sludge reflux of settling tank 2 to coagulation basin 1.
The waste water treatment process of phosphoric acid salt and cupric ion in a kind of synchronous removal water provided by the invention, employing adds ferrous sulfate as coagulating agent, having under the environment of dissolved oxygen, utilize cupric ion efficient catalytic ferrous oxidation intrinsic in waste water to form newborn ferric iron, on the one hand, make Fe (III) and phosphate radical (PO
4 3-) in conjunction with generating tertiary iron phosphate (FePO
4) precipitation, thereby remove the phosphoric acid salt in waste water; On the other hand, under certain certain suitable iron, phosphorus, copper mol ratio condition, newborn Fe (III), can form the co-precipitation of tertiary iron phosphate copper with Cu (II) and ortho-phosphoric acid root, thereby removes the Cu (II) in waste water and further remove phosphoric acid salt.Coagulating sedimentation system tool in the present invention has the following advantages:
(1) treatment of wastes with processes of wastes against one another, utilizes metal ion catalyst intrinsic in waste water, after efficient oxidation ferrous iron, removes phosphoric acid salt.The restricted condition of the ferrous dephosphorization of Simultaneous Oxidation is newborn ferric generation speed, in research technique in the past, usually adopts the dissolved oxygen improving in reaction system, or adopts advanced oxidation agent (as H
2o
2) strengthen the efficiency of Simultaneous Oxidation ferrous iron, thus phosphatic removal efficiency improved.And in this technique, utilizing cupric ion intrinsic in waste water, efficient catalytic ferrous oxidation generates newborn ferric iron, thereby improves phosphatic removal efficiency.Its relevant reaction formula is as follows:
Cu
2+the ferrous Simultaneous Oxidation of catalysis is newborn Fe
3+:
Fe
2++HO
2→Fe
3++H
2O
2
Fe
2++H
2O
2→Fe
3++H
2O
Newborn Fe
3+: with PO
4 3-reaction generates tertiary iron phosphate precipitation:
Fe
3++PO
4 3-=[FePO
4](s)
(2) synchronous copper removal, after utilizing metal Cu catalysis ferrous oxidation, is removed by the mode of co-precipitation.Heavy metal ion is the emphasis of Industrial Wastewater Treatment, and traditional technology generally can adopt and add high strength sorbent material, or adds sulfide, has improved on the one hand processing cost, and excessive the adding of sulfide can cause secondary pollution simultaneously.And the newborn ferric iron Fe (III) being produced by cupric ion efficient catalytic, can with waste water in Cu (II) and ortho-phosphoric acid root PO
4 3-produce the co-precipitation of tertiary iron phosphate copper, thereby remove the Cu (II) in waste water; Be, after Cu (II) is ferric iron as catalyzer efficient catalytic ferrous oxidation, to be removed by the mode of co-precipitation again.
Its relevant reaction formula is as follows:
4Fe
3++3Cu
2++6PO
4 3-=[Cu
3Fe
4(PO
4)
6](s)
As shown in Figure 1, the present invention also provides the wastewater treatment equipment of phosphoric acid salt and cupric ion in a kind of synchronous removal water, comprise coagulation basin 1 and settling tank 2, wherein, described coagulation basin 1 is connected with water inlet pipe 3 and ferrous sulfate adds mechanism 4, the water side of described coagulation basin 1 is connected with described settling tank 2, and described settling tank 2 is connected with water shoot 6, between described coagulation basin 1, settling tank 2, is connected with sludge reflux pipeline 5.
As shown in Figure 1, described ferrous sulfate adds mechanism 4 and comprises adding of agent pump 41 and the ferrous sulfate bin being connected with described adding of agent pump.
As shown in Figure 1, described sludge reflux pipeline 5 comprises sludge reflux pump 51, and the input terminus of described sludge reflux pump 51 is connected with described settling tank 2, and the output terminal of described sludge reflux pump 51 is connected with described coagulation basin 1.
As shown in Figure 1, described settling tank 2 is connected with industrial sludge delivery pipe 7, for discharging remaining industrial sludge.
As shown in Figure 1, in described settling tank 2, be provided with precipitation water inlet pipe 21, described precipitation water inlet pipe 21 is suspended in described settling tank 2, the water side of described coagulation basin 1 is connected with the precipitation water inlet pipe 21 of described settling tank 2, the water outlet of described precipitation water inlet pipe 21 is positioned at the middle part of described settling tank 2, water intake mode that can preferred described settling tank 2, to improve deposition efficiency.
Waste water treatment process and the device of phosphoric acid salt and cupric ion in the synchronous removal water of a kind of economical and efficient provided by the invention, adopt cheap ferrous iron as coagulating agent, utilize Copper ioncatalyst oxidation intrinsic in waste water ferrous, and synchronously remove phosphoric acid salt and the cupric ion in waste water by newborn ferric iron, cost is lower, operation is simple, and removal efficiency is higher.
In the synchronous removal water of a kind of economical and efficient provided by the invention, the waste water treatment process of phosphoric acid salt and cupric ion and device are particularly useful for removing phosphoric acid salt and the cupric ion in electroplating wastewater.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a synchronous waste water treatment process of removing phosphoric acid salt and cupric ion in water, is characterized in that: to adding ferrous sulfate in waste water, as coagulating agent, carry out coagulating sedimentation.
2. the waste water treatment process of phosphoric acid salt and cupric ion in synchronous removal water according to claim 1, it is characterized in that: having under the environment of dissolved oxygen, utilize cupric ion efficient catalytic ferrous oxidation intrinsic in waste water to form newborn ferric iron, on the one hand, newborn ferric iron is combined with phosphate radical and generates tertiary iron phosphate precipitation, thereby remove the phosphoric acid salt in waste water; On the other hand, under certain suitable iron, phosphorus, copper mol ratio condition, newborn ferric iron and cupric and ortho-phosphoric acid root can form the co-precipitation of tertiary iron phosphate copper, thereby remove the cupric in waste water and further remove phosphoric acid salt.
3. the waste water treatment process of phosphoric acid salt and cupric ion in synchronous removal water according to claim 1, is characterized in that, comprises the following steps:
S1: inject waste water to coagulation basin;
S2: having under the environment of dissolved oxygen, add ferrous sulfate as coagulating agent to coagulation basin;
S3: the water of coagulation basin is precipitated discharged to settling tank;
S4: by the sludge reflux of settling tank to coagulation basin.
4. a synchronous wastewater treatment equipment of removing phosphoric acid salt and cupric ion in water, it is characterized in that: comprise coagulation basin and settling tank, wherein, described coagulation basin is connected with water inlet pipe and ferrous sulfate adds mechanism, the water side of described coagulation basin is connected with described settling tank, described settling tank is connected with water shoot, is connected with sludge reflux pipeline between described coagulation basin, settling tank.
5. the wastewater treatment equipment of phosphoric acid salt and cupric ion in synchronous removal water according to claim 4, is characterized in that: described ferrous sulfate adds mechanism and comprises adding of agent pump and the ferrous sulfate bin being connected with described adding of agent pump.
6. the wastewater treatment equipment of phosphoric acid salt and cupric ion in synchronous removal water according to claim 4, it is characterized in that: described sludge reflux pipeline comprises sludge reflux pump, the input terminus of described sludge reflux pump is connected with described settling tank, and described sludge reflux delivery side of pump is connected with described coagulation basin.
7. the wastewater treatment equipment of phosphoric acid salt and cupric ion in synchronous removal water according to claim 4, is characterized in that: described settling tank is connected with industrial sludge delivery pipe.
8. the wastewater treatment equipment of phosphoric acid salt and cupric ion in synchronous removal water according to claim 4, it is characterized in that: in described settling tank, be provided with precipitation water inlet pipe, described precipitation water inlet pipe is suspended in described settling tank, the water side of described coagulation basin is connected with the precipitation water inlet pipe of described settling tank, and the water outlet of described precipitation water inlet pipe is positioned at the middle part of described settling tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656419.8A CN103663640A (en) | 2013-12-06 | 2013-12-06 | Wastewater processing technology and apparatus capable of synchronously removing phosphates and copper ions in water |
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| CN201310656419.8A CN103663640A (en) | 2013-12-06 | 2013-12-06 | Wastewater processing technology and apparatus capable of synchronously removing phosphates and copper ions in water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828923A (en) * | 2015-03-31 | 2015-08-12 | 北京宝迪华禹科技发展有限公司 | Medicine for removing phosphorus from high phosphorus wastewater, and recovery technology thereof |
| CN106830276A (en) * | 2017-03-07 | 2017-06-13 | 苏州清控环保科技有限公司 | A kind of efficient dephosphorization agent and preparation method thereof |
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| KR20110135295A (en) * | 2010-06-10 | 2011-12-16 | 최윤진 | Composition for removing cyanides from wastewater and method for treating wastewater using the same |
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2013
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| KR20110135295A (en) * | 2010-06-10 | 2011-12-16 | 최윤진 | Composition for removing cyanides from wastewater and method for treating wastewater using the same |
| CN201825803U (en) * | 2010-09-17 | 2011-05-11 | 哈尔滨工业大学深圳研究生院 | Coagulating sedimentation-reinforced sewage treatment device |
| CN103011360A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Treatment method for industrial wastewater generated by copper wet-process smelting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104828923A (en) * | 2015-03-31 | 2015-08-12 | 北京宝迪华禹科技发展有限公司 | Medicine for removing phosphorus from high phosphorus wastewater, and recovery technology thereof |
| CN106830276A (en) * | 2017-03-07 | 2017-06-13 | 苏州清控环保科技有限公司 | A kind of efficient dephosphorization agent and preparation method thereof |
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Inventor after: Wang Hongjie Inventor after: Lin Lusheng Inventor after: Li Ting Inventor after: Dong Wenyi Inventor after: Cai Chen Inventor before: Wang Hongjie Inventor before: Dong Wenyi Inventor before: Li Ting Inventor before: Lin Lusheng Inventor before: Cai Chen |
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Free format text: CORRECT: INVENTOR; FROM: WANG HONGJIE DONG WENYI LI TING LIN LUSHENG CAI CHEN TO: WANG HONGJIE LIN LUSHENG LI TING DONG WENYI CAI CHEN |
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Application publication date: 20140326 |