CN101575133A - Composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and application method thereof - Google Patents
Composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and application method thereof Download PDFInfo
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- CN101575133A CN101575133A CNA2008102436503A CN200810243650A CN101575133A CN 101575133 A CN101575133 A CN 101575133A CN A2008102436503 A CNA2008102436503 A CN A2008102436503A CN 200810243650 A CN200810243650 A CN 200810243650A CN 101575133 A CN101575133 A CN 101575133A
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Abstract
The invention discloses a composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and an application method thereof, and belongs to the field of sewage disposal in environmental protection. The composite phosphate removing agent is formed by mixing organic substances and inorganic substances, wherein the organic substances refer to organic acid and organic alcohol, and the inorganic substances refer to talcum powder, sodium ferrate and the like. The composite phosphate removing agent comprises the following compositions: 5 to 20 percent of organic acid, 5 to 20 percent of alcohol, 20 to 85 percent of talcum powder and 20 to 85 percent of sodium ferrate. The method comprises the following steps: adding the composite phosphate removing agent with the proportion into the high-concentration phosphorus-containing waste water, wherein the adding amount is between 100 and 1,000 ppm; using waste water containing ammonia nitrogen to adjust the pH value of the phosphorus-containing waste water to 8.0 and 9.0; stirring the mixture for 5 to 30 minutes; and performing air floatation treatment. The yielding water can reach the first-class emission standard of the country. The invention has the characteristics of simple technological flow, relatively low pharmaceutical dosage, low operation cost, low sludge yield, high phosphate removing effect, and the like.
Description
Technical field
The present invention is a kind of dephosphorization agent of handling high-concentration phosphorus-containing wastewater, relates to the removal of the phosphate anion in the phosphorus-containing wastewater, belongs to field of waste water treatment in the environment protection.
Background technology
Phosphorus and nitrogen are the principal elements that causes body eutrophication, and phosphorus is most critical, and phosphorus will cause algae excessive propagation above a certain amount of in the water body, causes the water body severe depletion of oxygen, hydrobiont death, water quality deterioration.Over past ten years, the ratio of China's eutrophication water rises to about 55% from 5.0%, and the water body ratio of oligotrophication reduces to 0.53% by 3.2%.Research waste water dephosphorization technology, the discharging of control phosphorus has become a problem demanding prompt solution.
Normally used phosphorus removing method mainly comprises chemical method and biological process.The biological process dephosphorization is based on bites the phosphorus bacterium under aerobic and anaerobic condition, and the principle of picked-up and release phosphorus realizes dephosphorization by aerobic-anaerobic alternate run.This method is under appropriate condition, can remove in the waste water phosphorus up to 90%, but in general, biological process dephosphorization process operation stability is relatively poor, the operation strictness, be subjected to the temperature, potential of hydrogen etc. of waste water to influence big, very strong to organic concentration in the waste water (BOD) dependency, organic content is lower in waste water, or phosphorus content is when surpassing 10mg/L, water outlet is difficult to satisfy the emission standard of phosphorus, often needs that therefore the secondary dephosphorization is carried out in water outlet and handles.The chemical method dephosphorization mainly refers to use the metal ion of generations such as molysite, aluminium salt and lime and phosphate radical and generates the sedimentary method of difficultly-soluble phosphates and remove phosphorus in the waste water.This method technology is simple, reliable, and can reach higher water outlet total phosphorus requirement, but this process is the reaction of precipitation-dissolution equilibrium, and on the one hand, the basicity in the waste water causes the part metals precipitation of hydroxide, consumes a part of amount of medicament; On the other hand for reaching lower phosphate ion concentration, must keep higher concentration of metal ions in the waste water, because small deposit seeds quasi-equilibrium phenomenon (pseudo2equilibrium), cause apparent solubility to amass and be much higher than true solubility product, in order to reach the formation condition of calcium phosphate precipitation, often greater than normal 1～2 order of magnitude of solubility product, therefore, medicament expense is with higher for the precipitation by metallic ion agent concentration that need add; Cause kish ionic concn (as iron ion) also higher thus, the concentration of metal ions that exceeds standard may also can produce chronic toxic action to biology; The chemical sludge water content that chemical precipitation produces is big, and the dehydration difficulty is difficult to handle, and is easy to generate secondary pollution.
Summary of the invention
The technical problem to be solved in the present invention is for overcoming the deficiencies in the prior art, a kind of dephosphorization agent and application method thereof that is applicable to high-concentration phosphorus-containing wastewater is provided, and this dephosphorization agent raw material is cheap and easy to get.
The technical solution used in the present invention is: this composite dephosphorizing agent is by organism and inorganics is composite forms, and wherein organism is meant organic acid and organic alcohols, and inorganics is meant talcum powder and Na2Fe04; Described organic acid is one or both in acetate, tartrate, oxalic acid, oxysuccinic acid, citric acid, the xitix; Described organic alcohols be primary isoamyl alcohol, glycol ether, triglycol, n-propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, ethylene glycol, 1,4 butyleneglycol (1,4BDO), in the methyl-cyclohexanol, propyl alcohol, propylene glycol, propylene glycol, Diethylene Glycol one or both.
By accounting for composite dephosphorizing agent total mass per-cent, described organic acid is one or both in acetate 5%～20%, tartrate 5%～20%, oxalic acid 5%～20%, oxysuccinic acid 5%～20%, citric acid 5%～20%, the xitix 5%～20%; Described organic alcohols is primary isoamyl alcohol 5%～20%, glycol ether 5%～20%, triglycol 5%～20%, n-propyl alcohol 5%～20%, Virahol 5%～20%, propyl carbinol 5%～20%, isopropylcarbinol 5%～20%, ethylene glycol 5%～20%, 1,4 butyleneglycols (1,4BDO) 5%～20%, in the methyl-cyclohexanol 5%～20%, propyl alcohol 5%～20%, propylene glycol 5%～20%, Diethylene Glycol 5%～20% one or both; Described inorganics is talcum powder 20%～85%, Na2Fe04 20%～85%.
The application method of this composite dephosphorizing agent is: in the time of in being added to waste water, according to phosphorus content concentration height in the waste water composite dephosphorizing agent was joined in the high-concentration phosphorus-containing wastewater after the dilution proportion according to 1: 500～1: 1000 earlier, with ammonia-containing water phosphorus-containing wastewater pH value is adjusted to 8.0～9.0, constantly stir, churning time is 5～30min, carry out air supporting again and handle, at last one deck residue that floats over the waste water surface is wiped off with slag scraper, water outlet is the waste water of removing phosphorus.
Dephosphorization agent of the present invention is by organism and inorganics is composite forms, and density is 5～10 times of water, has physical propertiess such as certain irritating smell and difficult volatilization, and phosphorus content can reach below the 0.5mg/L in the water outlet, the clearance of phosphorus 〉=99.9% in the waste water.
Embodiment
Composite dephosphorizing agent of the present invention is by organism and inorganics is composite forms, and wherein organism is meant organic acid and organic alcohols, and inorganics is meant talcum powder, Na2Fe04 etc.; By accounting for composite dephosphorizing agent total mass per-cent, wherein organic acid 5%～20%, alcohols 5%～20%, talcum powder 20%～85% Na2Fe04 20%～85%.
Organic acid is one or both in acetate, tartrate, oxalic acid, oxysuccinic acid, citric acid, the xitix.
Organic alcohols be primary isoamyl alcohol, glycol ether, triglycol, n-propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, ethylene glycol, 1,4 butyleneglycol (1,4BDO), in the methyl-cyclohexanol, propyl alcohol, propylene glycol, Diethylene Glycol one or both.
Above-mentioned composite dephosphorizing agent is specially: organic acid is one or both in acetate 5%～20% (account for composite dephosphorizing agent total mass per-cent, below identical), tartrate 5%～20%, oxalic acid 5%～20%, oxysuccinic acid 5%～20%, citric acid 5%～20%, the xitix 5%～20%; Described alcohols is primary isoamyl alcohol 5%～20%, glycol ether 5%～20%, triglycol 5%～20%, n-propyl alcohol 5%～20%, Virahol 5%～20%, propyl carbinol 5%～20%, isopropylcarbinol 5%～20%, ethylene glycol 5%～20%, 1,4 butyleneglycols (1,4BDO) 5%～20%, in the methyl-cyclohexanol 5%～20%, propyl alcohol 5%～20%, propylene glycol 5%～20%, Diethylene Glycol 5%～20% one or both; Talcum powder 20%～85% Na2Fe04 20%～85%.
When dosing, according to phosphorus content concentration height in the waste water composite dephosphorizing agent was joined in the high-concentration phosphorus-containing wastewater after the dilution proportion according to 1: 500～1: 1000, constantly stir, churning time is 5～30min, carrying out air supporting again handles, at last one deck residue that floats over the waste water surface is wiped off with slag scraper, water outlet is the waste water of removing phosphorus.
Embodiment 1
Oxalic acid 15%, methyl-cyclohexanol 20%, talcum powder 40% and Na2Fe04 25% are made into composite dephosphorizing agent, to phosphorous processing the in the Changzhou pharmacy waste water, phosphorus content 1450mg/L in the waste water, get 50L waste water during test, adding the 1L ammonia-nitrogen content is the high ammonium waste water of 14800mg/L, get the 10mL dephosphorization agent again in 5L water, the dilution back together joins in the phosphorus-containing wastewater with high ammonium waste water, and adjusting pH=8.5, stir 15min, carry out air supporting again, pneumatically supported residue is disposed with slag scraper, phosphorus content is 0.23mg/L in the water outlet, and clearance is 99.98%.
Embodiment 2
Tartrate 10%, glycol ether 25%, talcum powder 50% and Na2Fe04 15% are made into composite dephosphorizing agent, to phosphorous processing the in the Changzhou wastewater from chemical industry, phosphorus content 2380mg/L in the waste water, get 50L waste water during test, adding the 2L ammonia-nitrogen content is the high ammonium waste water of 14800mg/L, get the 20mL dephosphorization agent again in 10L water, the dilution back together joins in the phosphorus-containing wastewater with high ammonium waste water, and adjusting pH=8.0, stir 30min, carry out air supporting again, pneumatically supported residue is disposed with slag scraper, phosphorus content is 0.35mg/L in the water outlet, and clearance is 99.99%.
Embodiment 3
Xitix 15%, Diethylene Glycol 15%, talcum powder 60% and Na2Fe04 10% are made into composite dephosphorizing agent, to phosphorous processing the in the Changzhou pharmacy waste water, phosphorus content 3800mg/L in the waste water, get 50L waste water during test, adding the 2L ammonia-nitrogen content is the high ammonium waste water of 28000mg/L, get the 30mL dephosphorization agent again in 15L water, the dilution back together joins in the phosphorus-containing wastewater with high ammonium waste water, and adjusting pH=9.0, stir 20min, carry out air supporting again, pneumatically supported residue is disposed with slag scraper, phosphorus content is 0.39mg/L in the water outlet, and clearance is 99.99%.
Embodiment 4
To resist tartrate 10%, bad hematic acid 10%, ethylene glycol 15%, propylene glycol 5%, talcum powder 50% and Na2Fe04 10% is made into composite dephosphorizing agent, to phosphorous processing the in the pharmacy waste water of Heze, Shandong, phosphorus content 1200mg/L in the waste water, get 5L waste water during test, adding the 0.5L ammonia-nitrogen content is the high ammonium waste water of 16000mg/L, get the 2mL dephosphorization agent again in 1L water, the dilution back together joins in the phosphorus-containing wastewater with high ammonium waste water, and adjusting pH=8.6, stir 10min, carry out air supporting again, pneumatically supported residue is disposed with slag scraper, phosphorus content is 0.50mg/L in the water outlet, and clearance is 99.96%.
Embodiment 5
With acetate 15%, oxysuccinic acid 15%, Diethylene Glycol 15%, talcum powder 45% and Na2Fe04 10% is made into composite dephosphorizing agent, to phosphorous processing the in the Shandong Zibo pharmacy waste water, phosphorus content 800mg/L in the waste water, get 10L waste water during test, adding the 1L ammonia-nitrogen content is the high ammonium waste water of 8000mg/L, get the 10mL dephosphorization agent again in 2L water, the dilution back together joins in the phosphorus-containing wastewater with high ammonium waste water, and adjusting pH=9.0, stir 15min, carry out air supporting again, pneumatically supported residue is disposed with slag scraper, phosphorus content is 0.28mg/L in the water outlet, and clearance is 99.97%.
Embodiment 6
With xitix 15%, glycol ether 15%, propylene glycol 10%, talcum powder 40% and Na2Fe04 20% is made into composite dephosphorizing agent, to phosphorous processing the in the Changzhou agricultural chemicals waste water, phosphorus content 5000mg/L in the waste water, get 50L waste water during test, adding the 3L ammonia-nitrogen content is the high ammonium waste water of 30000mg/L, get the 30mL dephosphorization agent again in 15L water, the dilution back together joins in the phosphorus-containing wastewater with high ammonium waste water, and adjusting pH=8.5, stir 30min, carry out air supporting again, pneumatically supported residue is disposed with slag scraper, phosphorus content is 0.48mg/L in the water outlet, and clearance is 99.99%.
Claims (3)
1. composite dephosphorizing agent of removing high-concentration phosphorus-containing wastewater is characterized in that: this composite dephosphorizing agent is by organism and inorganics is composite forms, and wherein organism is meant organic acid and organic alcohols, and inorganics is meant talcum powder and Na2Fe04; Described organic acid is one or both in acetate, tartrate, oxalic acid, oxysuccinic acid, citric acid, the xitix; Described organic alcohols be primary isoamyl alcohol, glycol ether, triglycol, n-propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, ethylene glycol, 1,4 butyleneglycol (1,4BDO), in the methyl-cyclohexanol, propyl alcohol, propylene glycol, propylene glycol, Diethylene Glycol one or both.
2. a kind of composite dephosphorizing agent of removing high-concentration phosphorus-containing wastewater according to claim 1, it is characterized in that: by accounting for composite dephosphorizing agent total mass per-cent, described organic acid is one or both in acetate 5%～20%, tartrate 5%～20%, oxalic acid 5%～20%, oxysuccinic acid 5%～20%, citric acid 5%～20%, the xitix 5%～20%; Described organic alcohols is primary isoamyl alcohol 5%～20%, glycol ether 5%～20%, triglycol 5%～20%, n-propyl alcohol 5%～20%, Virahol 5%～20%, propyl carbinol 5%～20%, isopropylcarbinol 5%～20%, ethylene glycol 5%～20%, 1,4 butyleneglycols (1,4BDO) 5%～20%, in the methyl-cyclohexanol 5%～20%, propyl alcohol 5%～20%, propylene glycol 5%～20%, Diethylene Glycol 5%～20% one or both; Described inorganics is talcum powder 20%～85%, Na2Fe04 20%～85%.
3. application method of removing the composite dephosphorizing agent of high-concentration phosphorus-containing wastewater, it is characterized in that: this composite dephosphorizing agent is in being added to waste water the time, according to phosphorus content concentration height in the waste water composite dephosphorizing agent was joined in the high-concentration phosphorus-containing wastewater after the dilution proportion according to 1: 500～1: 1000 earlier, with ammonia-containing water phosphorus-containing wastewater pH value is adjusted to 8.0～9.0, constantly stir, churning time is 5～30min, carrying out air supporting again handles, at last one deck residue that floats over the waste water surface is wiped off with slag scraper, water outlet is the waste water of removing phosphorus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102436503A CN101575133B (en) | 2008-12-05 | 2008-12-05 | Composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and application method thereof |
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| CN2008102436503A CN101575133B (en) | 2008-12-05 | 2008-12-05 | Composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and application method thereof |
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| CN101575133A true CN101575133A (en) | 2009-11-11 |
| CN101575133B CN101575133B (en) | 2011-06-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350313A (en) * | 2011-08-30 | 2012-02-15 | 郑州航空工业管理学院 | Preparation method and application of copper and ferrous magnetic metal oxide modified fly ash phosphorus adsorbent |
| CN102476848A (en) * | 2011-10-20 | 2012-05-30 | 常州亚环环保科技有限公司 | Composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and application method thereof |
| CN108658163A (en) * | 2018-05-23 | 2018-10-16 | 深圳市世清环保科技有限公司 | A kind of efficient dephosphorization agent for chemical nickle-plating wastewater |
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2008
- 2008-12-05 CN CN2008102436503A patent/CN101575133B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350313A (en) * | 2011-08-30 | 2012-02-15 | 郑州航空工业管理学院 | Preparation method and application of copper and ferrous magnetic metal oxide modified fly ash phosphorus adsorbent |
| CN102476848A (en) * | 2011-10-20 | 2012-05-30 | 常州亚环环保科技有限公司 | Composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and application method thereof |
| CN108658163A (en) * | 2018-05-23 | 2018-10-16 | 深圳市世清环保科技有限公司 | A kind of efficient dephosphorization agent for chemical nickle-plating wastewater |
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| CN101575133B (en) | 2011-06-15 |
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Granted publication date: 20110615 Termination date: 20161205 |