CN101786705A - Waste water treatment system - Google Patents
Waste water treatment system Download PDFInfo
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- CN101786705A CN101786705A CN201010105600A CN201010105600A CN101786705A CN 101786705 A CN101786705 A CN 101786705A CN 201010105600 A CN201010105600 A CN 201010105600A CN 201010105600 A CN201010105600 A CN 201010105600A CN 101786705 A CN101786705 A CN 101786705A
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Abstract
The invention discloses an industrial waste water treatment system which comprises a waste water preconditioning tank, a coagulation reaction tank, a glue feather tank and a sedimentation tank, wherein the waste water preconditioning tank is used for evenly mixing waster water which is discharged from plants at the different time and has different flow rates and concentrations; the coagulation reaction tank is connected with the waste water preconditioning tank, basic silicon-based aluminate series wastewater treatment agent is added into the coagulation reaction tank for coagulation reaction, and the adding quantity is that 0.01-30g of treatment agent is added into every liter of waste water; the glue feather tank is connected with the coagulation reaction tank, flocculating agent is added into the glue feather tank for glue feather treatment, and small granule precipitate is flocculated into large granule precipitate; and the sedimentation tank is connected with the glue feather tank and is used for separating liquid and solid in the sedimentation tank. The system can be used for treating orthophosphate waste water and pyrophosphate waste water, simplifies the existing waste water treatment technique for the treatment of cuprlc pyrophosphate, does not need to adopt strong oxidizing agent to lead pyrophosphate and hypophosphite to be oxidized into orthophosphate, and also can remove copper ions.
Description
Technical field
The present invention relates to wastewater treatment and environmental engineering technical field, relate in particular to a kind of system that uses basic silica-based aluminate serial waste water treating agent to carry out wastewater treatment.
Background technology
Along with the mankind increase environmental resources development and use active, the acceleration of industrial and agricultural production scale causes increasing nutritive substance to enter in the rivers and lakes, causes the eutrophication of water body.The relation that algae needs nitrogen, phosphorus from water body, phosphorus is the key constraints of body eutrophication.The phosphorus-containing wastewater main source is: 1. the form that exists according to phosphorus can be divided into inorganic phosphorus waste water (phosphoric acid salt, poly-phosphate) and organophosphorus waste water (organic phosphorus compound mixes in water); 2. Cataloguing In Source mainly comes from the production process of various washing composition, phosphorized waste water, agricultural fertilizer and the drainage of human body etc.
At present, dephosphorization technique commonly used both at home and abroad mainly contains biological process, chemical method two big classes.Biological process such as A/O, A2/O, UCT technology, main processing lower concentration and the organic phosphorus-containing wastewater of being fit to.Chemical method mainly contains technologies such as coagulant sedimentation, crystallization process, ion exchange adsorption, electrodialysis, reverse osmosis, the main processing inorganic states phosphorus-containing wastewater that is fit to.Chemical precipitation method becomes dephosphorization method commonly used owing to dephosphorizing rate is high, and chemical agent mainly is aluminium salt, molysite and lime.But add molysite and mainly have problems such as colourity, have the big and secondary pollution problem of sludge quantity and add lime.
Along with a large amount of employings of pyrophosphate copper plating technology, pyrophosphate (P appears in a large number simultaneously in the trade effluent
2O
7 4-), orthophosphite (PO
3 3-), for the processing of this rich phosphorus waste water, prior art generally adopts acidic oxidation to add the second-stage treatment technology of calcium salt precipitation method, and reaction mechanism: the first step is passed through strong oxidizer NaClO with pyrophosphate salt (P under acidic conditions
2O
7 4-), phosphite (PO
3 3-) wait hydrolysis oxidation to generate orthophosphoric acid salt: H
4P
2O
7+ H
2O=2H
3PO
4PO
3 3-+ ClO
-=PO
4 3-+ Cl
-
Second step added CaCl under alkaline condition
2Generate the calcium phosphate precipitation thing with the orthophosphoric acid salt reaction:
10Ca
2++6PO
4 3-+2OH
-＝Ca
10(OH)
2(PO
4)
6
This technology is owing to need to use a large amount of oxygenants, and need carry out acidification to waste water, therefore has complex process, and cost is higher, also may bring the shortcoming of secondary pollution.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical problem to be solved by this invention provides a kind of system that uses basic silica-based aluminate serial waste water treating agent to handle waste water.
Technical scheme of the present invention is as follows:
A kind of industrial waste water treatment system, it comprises waste water preconditioning pond, and described waste water preconditioning pond is used for different flow and different concns waste water that factory's different time is discharged are mixed; Coagulation reaction tank connects described waste water preconditioning pond, in described coagulation reaction tank, add basic silica-based aluminate serial waste water treating agent and carry out coagulating, dosage be every liter of waste water add described treatment agent 0.01 restrain 30 the gram; Jiao Yuchi connects described coagulation reaction tank, adds flocculation agent to described Jiao Yuchi and carries out glue emergence processing, and the small-particle throw out is flocculated into the macrobead throw out; Settling tank connects described Jiao Yuchi, carries out solid-liquid separation in described settling tank.
Described Waste Water Treatment, the coagulating time is 1 minute to 40 minutes in the described coagulation reaction tank.
Described Waste Water Treatment in described glue plumage pond, adopts inorganic flocculating agent PAC or organic floculant PAM to carry out flocculation treatment.
Described Waste Water Treatment also comprises pH value readjustment pond, is used to regulate the potential of hydrogen of supernatant liquor after the solid-liquid separation, reaches national sewage comprehensive emission standard (GB 8978-1996).
Described Waste Water Treatment also comprises the activated carbon filtration tower, is used for that waste water water is done deep purifying and handles.
Adopt such scheme, the present invention carries out wastewater treatment by adopting basic silica-based aluminate serial waste water treating agent, has obtained following beneficial effect:
1, the basic silica-based aluminate serial waste water treating agent cost is lower, and it adopts several frequently seen industrial chemicals simply to process, and can obtain waste water conditioner, and technology is simple, and is with low cost;
2, adopt basic silica-based aluminate serial waste water treating agent, according to the phosphorus content of different waste water, select different treatment agent dosages, dosage restrains 30 grams from every liter of waste water 0.01, all can reach national sewage comprehensive emission standard (GB 8978-1996), the efficient of dephosphorization is up to 99.9%;
3, can handle orthophosphoric acid salt waste water, also can handle pyrophosphate salt waste water,, simplify present waste water treatment process for the processing of cupric pyrophosphate waste water, do not need to adopt strong oxidizer that pyrophosphate, orthophosphite are oxidized to the ortho-phosphoric acid root, can also remove cupric ion;
4, basic silica-based aluminate serial waste water treating agent goes for various concentration and various types of treatment of Phosphorus Containing Waste Water, and range of application is extremely wide;
5, avoid adopting the colourity problem that molysite brings and add the big and secondary pollution problem of sludge quantity that lime brings.
Description of drawings
Fig. 1 is the structural representation of system of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1: the present invention at first provides a kind of basic silica-based aluminate serial waste water treating agent, this waste water conditioner comprises calcium containing compound, aluminum contained compound and silicon additive, the principle of this waste water conditioner dephosphorization is: above-mentioned basic silica-based aluminate serial waste water treating agent can generate the compound (phosphate radical LDH) with nanometer laminated structure with the phosphate anion reaction in the waste water, removes most of phosphate anion with the sedimentary form of phosphate radical LDH.The phosphate anion of interlayer can be PO
4 3-, PO
3 3-, P
2O
7 4-, HPO
4 2-, H
2PO
4 2-, PO
3 -, also can be the phosphorus that complex state exists, as: [Cu (P
2O
7)
2]
2-, [Sn (P
2O
7)
2]
2-Deng.
About the mechanism of copper removal, a part of copper is removed with the precipitation of hydroxide form in the waste water, also has the divalent-metal ion in the part copper replacement basic silica-based aluminate, enters in the lattice of LDH, is removed with the sedimentary form of LDH.Afterwards, the nanometer LDH compound of generation also has strong adsorption, can carry out degree of depth adsorption treatment to phosphate radical residual in the waste water, thereby reaches the purpose of efficient dephosphorization.This product has demonstrated fully the theory of " recycling economy " simultaneously, solid useless can the recycling that produces in the treating processes.Adopt several frequently seen industrial chemicals simply to process like this, can obtain basic silica-based aluminate serial waste water treating agent, technology is simple, and is with low cost; As seen contrast experiment for adopting basic silica-based aluminate serial waste water treating agent and prior art scheme to carry out wastewater treatment as shown in table 1 adopts basic silica-based aluminate serial waste water treating agent technology of the present invention simple, and consumption is extremely low, and is with low cost; Can adopt different dosages with dissimilar waste water according to different concns simultaneously, go for various concentration and various types of treatment of Phosphorus Containing Waste Water, range of application is extremely wide; Also avoid adopting the colourity problem that molysite brings in addition and add the big and secondary pollution problem of sludge quantity that lime brings.
The comparison of phosphorus content before and after the table 1 cupric pyrophosphate electroplating wastewater processing
Preferably, above-mentioned calcium containing compound adopts CaCl
2Perhaps CaO or Ca (OH)
2, its quality percentage composition is 30～80%; Aluminum contained compound is selected AlCl for use
3Perhaps Al
2O
3Perhaps Al
2(SO
4)
3, its quality percentage composition is 5～40%; Silicon additive, for example SiO
2, the quality percentage composition is 0.2～20%.Adopt basic silica-based aluminate serial waste water treating agent, phosphorus content according to different waste water, select different treatment agent dosages, dosage restrains 30 grams from every liter of waste water 0.01 can reach national sewage comprehensive emission standard (GB 8978-1996), and the efficient of dephosphorization is up to 99.9%; Both can handle orthophosphoric acid salt waste water, also can handle pyrophosphate salt waste water,, simplify present waste water treatment process for the processing of cupric pyrophosphate waste water, do not need to adopt strong oxidizer that pyrophosphate, orthophosphite are oxidized to the ortho-phosphoric acid root, can also remove cupric ion;
Preferably, in order to obtain better phosphor-removing effect, the described basic silica-based aluminate serial waste water treating agent of present embodiment also comprises iron containing compounds, and described iron containing compounds quality percentage composition is less than 20% greater than 0; But the use of iron containing compounds will be a cost to improve, and the basic silica-based aluminate serial waste water treating agent that does not add iron containing compounds can make processed waste water satisfy national sewage comprehensive emission standard (GB 8978-1996) equally.
Embodiment 2: present embodiment provides a kind of industrial waste water treatment system, system construction drawing as shown in Figure 1, and it comprises: waste water preconditioning pond, coagulation reaction tank, Jiao Yuchi, settling tank; Wherein, waste water preconditioning pond is used for different flow and different concns waste water that factory's different time is discharged are mixed; Industrial enterprise since the production technique that adopts with raw materials used different, causing the water quality and the water yield of the waste water of its discharge was unbalanced in 24 hours.In order to make pipeline and to handle the structures works better, be not subjected to the peak flow of waste water and the influence of change in concentration, often need to be provided with equalizing tank, handle again after peak flow that different time is discharged and high-concentration waste water and low flow or low concentration wastewater mix.
After preconditioning is carried out to waste water in waste water preconditioning pond, waste water enters coagulation reaction tank, in coagulation reaction tank, add the described basic silica-based aluminate serial waste water treating agent of the foregoing description and carry out coagulating, dosage be every liter of waste water add described treatment agent 0.01 restrain 30 the gram; Concrete dosage can be adjusted according to the Pollutant levels of waste water, thereby the reaction vessel of certain or multiple pollutant removal in the waste water is referred to as coagulation basin.
Get waste water through coagulating afterwards and enter Jiao Yuchi, in glue plumage pond, add flocculation agent and carry out glue emergence processing, the small-particle throw out is flocculated into the macrobead throw out; At last, waste water enters in the settling tank, carries out solid-liquid separation at settling tank.
Another example in the described Waste Water Treatment, describedly mixes that the coagulating time is controlled between 1 minute to 40 minutes in reaction tank.
Another example in the above-mentioned Waste Water Treatment, in described glue plumage pond, adopts inorganic flocculating agent PAC or organic floculant PAM to carry out glue emergence and handles, and the small-particle throw out is condensed better for the macrobead throw out, makes things convenient for solid-liquid separation.
Another example, in the above-mentioned Waste Water Treatment, also comprise pH value readjustment pond, be used to regulate the potential of hydrogen of supernatant liquor after the solid-liquid separation, reach national sewage comprehensive emission standard (GB8978-1996); The supernatant liquor pH value of coming out through settling tank is between 5-13, and the pH value of discharging is 6-9 in the national sewage comprehensive emission standard (GB 8978-1996), so need be adjusted at the pH value in the 6-9 scope.
Another example can also comprise the activated carbon filtration tower, and the surface of gac is particulate state, inside is porous, and the kapillary of many about 0.1nm～10nm size is arranged in the hole, and specific surface area is bigger, use gac that sewage is carried out advanced treatment, can reach better non-pollution discharge effect.
Following examples 3 to embodiment 7 are to utilize Waste Water Treatment of the present invention to carry out the experimental data of wastewater treatment.
Embodiment 3: present embodiment is got 60% CaCl
2, 35.8% Al
2(SO
4)
3, 4% FeSO
4, 0.2% SiO
2Promptly get above-mentioned treatment agent, get Jiangsu and electroplate company's pyrophosphate copper plating wastewater equalizing tank waste water, total phosphorus concentration in this waste water: 246mg/L, copper ion concentration: 258mg/L, initial pH on wastewater value: 2.83, above-mentioned waste water is injected Waste Water Treatment of the present invention handle, wherein add in this waste water of above-mentioned treatment agent to five part equivalent according to the listed dosage of table 3 in the coagulation reaction tank, reaction 2min, take out behind the assaying reaction phosphorus and copper content in the waste water, concrete outcome is as shown in table 3 below:
The comparison that table 3 is phosphorous, copper waste water is handled front and back content
| Dosage g/L | Reaction back copper ion concentration mg/L | Reaction back total phosphorus concentration mg/L |
| ??0.25 | ??0.31 | ??0.93 |
| ??0.5 | ??0.28 | ??0.56 |
| ??1.2 | ??0.23 | ??0.24 |
| ??2.0 | ??0.12 | ??0.06 |
| ??3.0 | ??0.04 | ??0.01 |
Embodiment 4: get 30% CaO, 40% AlCl
3, 10% FeSO
4, 20% SiO
2Get the tetra-sodium copper facing workshop discharge outlet waste water that company is electroplated in Jiangsu, total phosphorus concentration in the waste water: 2300mg/L, copper ion concentration: 1760mg/L, the initial pH on wastewater value: 1.02, above-mentioned waste water is injected Waste Water Treatment of the present invention handle, wherein add in this waste water of above-mentioned treatment agent to four part equivalent according to the listed dosage of table 4 in the coagulation reaction tank, reaction 10min takes out behind the assaying reaction content of phosphorus and copper in the waste water, and concrete outcome is as shown in table 4 below:
The comparison that table 4 is phosphorous, copper waste water is handled front and back content
| Dosage g/L | Reaction back copper ion concentration mg/L | Reaction back total phosphorus concentration mg/L | Reaction back pH value |
| ??5 | ??0.3 | ??0.86 | ??10.4 |
| ??10 | ??0.16 | ??0.52 | ??11.7 |
| ??15 | ??0.08 | ??0.11 | ??12.01 |
| ??30 | ??0.03 | ??0.06 | ??12.35 |
Embodiment 5: get 80% CaO, 5% AlCl
3, 5% FeSO
4, 10% SiO
2So-and-so electroplates the tetra-sodium copper facing workshop discharge outlet waste water of company to get Nanjing, total phosphorus concentration in the waste water: 2800mg/L, copper ion concentration: 2158mg/L, the initial pH on wastewater value: 1.13, above-mentioned waste water is injected Waste Water Treatment of the present invention handle, wherein add in this waste water of above-mentioned treatment agent to four part equivalent according to the listed dosage of table 5 in the coagulation reaction tank, reaction 40min takes out behind the assaying reaction content of phosphorus and copper in the waste water, and concrete outcome is as shown in table 5 below:
The comparison that table 5 is phosphorous, copper waste water is handled front and back content
| Dosage g/L | Reaction back copper ion concentration mg/L | Reaction back total phosphorus concentration mg/L | Reaction back pH value |
| ??5 | ??0.36 | ??0.98 | ??10.21 |
| ??10 | ??0.2 | ??0.64 | ??11.34 |
| ??15 | ??0.13 | ??0.15 | ??12.04 |
| ??30 | ??0.05 | ??0.07 | ??12.34 |
Embodiment 6: present embodiment is got 60% Ca (OH)
2, 20% Al (NO
3)
3, 5% FeSO
4, 15% SiO
2Promptly get above-mentioned treatment agent, get Jiangsu and electroplate company's pyrophosphate copper plating wastewater equalizing tank waste water, total phosphorus concentration in this waste water: 163mg/L, copper ion concentration: 179mg/L, initial pH on wastewater value: 2.8, above-mentioned waste water is injected Waste Water Treatment of the present invention handle, wherein add in this waste water of above-mentioned treatment agent to five part equivalent according to the listed dosage of table 6 in the coagulation reaction tank, reaction 2min, take out behind the assaying reaction phosphorus and copper content in the waste water, concrete outcome is as shown in table 6 below:
The comparison that table 6 is phosphorous, copper waste water is handled front and back content
| Dosage g/L | Reaction back copper ion concentration mg/L | Reaction back total phosphorus concentration mg/L |
| ??0.5 | ??0.31 | ??0.93 |
| Dosage g/L | Reaction back copper ion concentration mg/L | Reaction back total phosphorus concentration mg/L |
| ??1.0 | ??0.28 | ??0.46 |
| ??1.2 | ??0.23 | ??0.24 |
| ??1.4 | ??0.12 | ??0.06 |
| ??2.0 | ??0.04 | ??0.01 |
Embodiment 7: present embodiment is got 50% CaO, 40% Al (NO
3)
39H
2O, 5% FeCl
3, 5% SiO
2Promptly get above-mentioned treatment agent, get Jiangsu and electroplate company's pyrophosphate copper plating wastewater equalizing tank waste water, total phosphorus concentration in this waste water: 20mg/L, copper ion concentration: 80mg/L, initial pH on wastewater value: 2.0, above-mentioned waste water is injected Waste Water Treatment of the present invention handle, wherein add in this waste water of above-mentioned treatment agent to five part equivalent according to the listed dosage of table 7 in the coagulation reaction tank, reaction 2min, take out behind the assaying reaction phosphorus and copper content in the waste water, concrete outcome is as shown in table 7 below:
The comparison that table 7 is phosphorous, copper waste water is handled front and back content
| Dosage g/L | Reaction back copper ion concentration mg/L | Reaction back total phosphorus concentration mg/L |
| ??0.01 | ??0.48 | ??0.97 |
| ??0.05 | ??0.39 | ??0.85 |
| ??0.1 | ??0.24 | ??0.76 |
| ??0.2 | ??0.18 | ??0.42 |
| ??0.3 | ??0.06 | ??0.25 |
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (5)
1. an industrial waste water treatment system is characterized in that, comprises waste water preconditioning pond, and described waste water preconditioning pond is used for different flow and different concns waste water that factory's different time is discharged are mixed; Coagulation reaction tank connects described waste water preconditioning pond, in described coagulation reaction tank, add basic silica-based aluminate serial waste water treating agent and carry out coagulating, dosage be every liter of waste water add described treatment agent 0.01 restrain 30 the gram; Jiao Yuchi connects described coagulation reaction tank, adds flocculation agent to described Jiao Yuchi and carries out glue emergence processing, and the small-particle throw out is flocculated into the macrobead throw out; Settling tank connects described Jiao Yuchi, carries out solid-liquid separation in described settling tank.
2. Waste Water Treatment according to claim 1 is characterized in that, the coagulating time is 1 minute to 40 minutes in the described coagulation reaction tank.
3. Waste Water Treatment according to claim 1 is characterized in that, in described glue plumage pond, adopts inorganic flocculating agent PAC or organic floculant PAM to carry out flocculation treatment.
4. Waste Water Treatment according to claim 1 is characterized in that, also comprises pH value readjustment pond, is used to regulate the potential of hydrogen of supernatant liquor after the solid-liquid separation, reaches national sewage comprehensive emission standard (GB 8978-1996).
5. Waste Water Treatment according to claim 1 is characterized in that, also comprises the activated carbon filtration tower, is used for that waste water is done deep purifying and handles.
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|---|---|---|---|
| CN201010105600A CN101786705A (en) | 2010-02-04 | 2010-02-04 | Waste water treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105600A CN101786705A (en) | 2010-02-04 | 2010-02-04 | Waste water treatment system |
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|---|---|
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ID=42530106
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512985A (en) * | 2014-12-13 | 2015-04-15 | 佛山市高明区合朝农业发展有限公司 | Piggery wastewater anaerobic digestion method for production of biogas |
| CN108341577A (en) * | 2018-03-12 | 2018-07-31 | 南京顺如信息科技有限公司 | A kind of environment-friendly type channel cleanout and bed mud Online Processing System |
| CN113526628A (en) * | 2021-07-22 | 2021-10-22 | 生态环境部华南环境科学研究所 | Electrodialysis device for efficiently desalting pyrophosphate copper plating wastewater |
| CN115196812A (en) * | 2021-04-08 | 2022-10-18 | 富钰精密组件（昆山）有限公司 | Wastewater treatment system and wastewater treatment method |
-
2010
- 2010-02-04 CN CN201010105600A patent/CN101786705A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512985A (en) * | 2014-12-13 | 2015-04-15 | 佛山市高明区合朝农业发展有限公司 | Piggery wastewater anaerobic digestion method for production of biogas |
| CN108341577A (en) * | 2018-03-12 | 2018-07-31 | 南京顺如信息科技有限公司 | A kind of environment-friendly type channel cleanout and bed mud Online Processing System |
| CN115196812A (en) * | 2021-04-08 | 2022-10-18 | 富钰精密组件（昆山）有限公司 | Wastewater treatment system and wastewater treatment method |
| CN113526628A (en) * | 2021-07-22 | 2021-10-22 | 生态环境部华南环境科学研究所 | Electrodialysis device for efficiently desalting pyrophosphate copper plating wastewater |
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Application publication date: 20100728 |