CN106082488A - Phosphorus removing method for high-concentration phosphorus-containing wastewater - Google Patents
Phosphorus removing method for high-concentration phosphorus-containing wastewater Download PDFInfo
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- CN106082488A CN106082488A CN201610476394.7A CN201610476394A CN106082488A CN 106082488 A CN106082488 A CN 106082488A CN 201610476394 A CN201610476394 A CN 201610476394A CN 106082488 A CN106082488 A CN 106082488A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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Abstract
The invention discloses the phosphorus removing method for high-concentration phosphorus-containing wastewater, described phosphorus removing method is that the waste water that the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 5000～25000ppm obtains after pH value regulation, calcification dephosphorization is sent into waste water reaction pond, after having reacted, add flocculant and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, and biochemical treatment operation sent into after treatment by clear liquid.The present invention uses the steps such as pH value regulation, calcification dephosphorization, waste water reaction pond to carry out continuous dephosphorization, the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 5000～25000ppm can be processed and reach to meet the waste water standard of biochemical treatment condition, the features such as the raw material of production of phosphate fertilizer, the filtering residue phosphorus cream obtained during dephosphorization can have that technological process is simple, low in investment cost, environmental pollution are little.
Description
Technical field
The present invention is the phosphorus removing method for high-concentration phosphorus-containing wastewater, and produce during being specifically related to pesticide producing is highly concentrated
The chemical phosphorus removal method of degree phosphorus-containing wastewater, belongs to pesticide production technology field.
Background technology
Phosphorus is widely used in Chemical Manufacture especially pesticide producing, often contains higher in the waste water that technical process produces
The phosphorus of concentration, to environmental effects, country has formulated the strictest discharge standard.
In chemical production wastewater, the existence form of phosphorus mainly has the Phos with phosphate as representative and various forms of has
Machine phosphorus, goes the method for dephosphorization mainly to have ferrous sulfate dephosphorization method at present, and it is effective that this method removes Phos, but to organophosphor
Substantially without removal effect, use catalytic oxidation to be converted into Phos for organophosphor prior art and add ferrous sulfate again
Removing, its equipment investment is huge, and operating cost is high.
Application No. 200910308213.x, the invention of entitled " preprocess method of a kind of glyphosate production waste water " is special
Profit provides one can remove glyphosate, sodium chloride, and the glyphosate reducing CODcr value produces the preprocess method of waste water.This
Phosphorus removing method in bright is catalytic oxidation and calcification dephosphorization method, and catalytic oxidation equipment investment is big, and operating cost is high, and calcium
Eliminate phosphorus method and can only remove Phos, and organophosphor cannot be removed.
Summary of the invention
It is an object of the invention to provide the phosphorus removing method of high-concentration phosphorus-containing wastewater, use pH value regulation, calcification dephosphorization, give up
The steps such as water reaction tank carry out continuous dephosphorization, can be processed by the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 5000～25000ppm and reach
To meeting the waste water standard of biochemical treatment condition, the filtering residue phosphorus cream obtained during dephosphorization can have as the raw material of production of phosphate fertilizer
The feature such as have that technological process is simple, low in investment cost, environmental pollution are little.
The present invention is achieved through the following technical solutions: for the phosphorus removing method of high-concentration phosphorus-containing wastewater, described dephosphorization side
Method is the waste water obtained after pH value regulation, calcification dephosphorization by the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 5000～25000ppm
Send into waste water reaction pond, after having reacted, add flocculant and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained
Phosphorus cream and clear liquid, biochemical treatment operation sent into after treatment by clear liquid.
The present invention can realize organophosphor and the removing of Phos in high-concentration phosphorus-containing wastewater, and handling process is simple, more existing
For technology uses the method for catalysis oxidation removal organophosphor, phosphorus removing method of the present invention is in the throwing of the process costs such as equipment, raw material
Enter aspect the cheapest, it is easy to industrialized production.
The regulation of described pH value includes: add pH adjusting agent in high-concentration phosphorus-containing wastewater, by mixing reactor by highly concentrated
The pH value of degree phosphorus-containing wastewater is adjusted to 0～2, obtains acidified waste water.
In said process, pH value is regulated 0～2, be conducive to as larger molecular organics most in waste water is become little
Molecular organic, uses mixing reactor, beneficially pH adjusting agent and phosphorus-containing wastewater to be sufficiently mixed reaction simultaneously, and monitors water outlet
PH value.
Described pH adjusting agent is selected from hydrochloric acid, the one in nitric acid or sulphuric acid.
Described calcification dephosphorization includes: add dephosphorization agent in the phosphorus-containing wastewater after pH value regulates, and sends into mixed after mix homogeneously
Close reaction tower to react, use hybrid reaction tower to be conducive to strengthening heat and mass, make reaction more abundant.
Described dephosphorization agent is calcium hydroxide powder or calcium hydroxide emulsion.
The addition of described dephosphorization agent meets the pH value of described phosphorus-containing wastewater and controls, 9.5～13, to make precipitation more abundant.
After described waste water enters waste water reaction pond, after waste water stirring mixing, under room temperature or heating condition, react 30min
～3h, the pH value maintaining reaction system is 9.5～13.
The gas formed in described course of reaction is delivered to tail gas washing tower through exhausting system, after washing, send boiler to burn.
Described flocculant is selected from aluminium polychlorid, polyaluminium sulfate, poly-ferric chloride, polyacrylamide or microbial flocculation
One in agent.
Described clear liquid obtains the total phosphorus concentration effluent clear solution less than 10ppm after treatment, sends into biochemical treatment operation.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) handling process of the present invention is simple, uses the steps such as pH value regulation, calcification dephosphorization, waste water reaction pond to carry out continuous dephosphorization,
The high-concentration phosphorus-containing wastewater that total phosphorus concentration is 5000～25000ppm can be processed the waste water obtaining total phosphorus concentration less than 10ppm,
And reach biochemical treatment condition.
(2) present invention uses mixing reactor and hybrid reaction tower to react, and can remove high concentration and contain in course of reaction
Phos in phosphorus waste water and organophosphor, for relatively prior art uses the method for catalysis oxidation removal organophosphor, the present invention removes
Phosphorus method is the cheapest in terms of the input of the process costs such as equipment, raw material, it is easy to the control of process costs.
(3) present invention adds flocculant in waste water reaction pond, makes water outlet limpider, the filtering residue phosphorus cream of generation, through place
Also as the raw material of production of phosphate fertilizer after reason, i.e. decrease the impact on environment and create again economic benefit.
(4) volatile malodor formed in the course of reaction of waste water reaction pond is delivered to washing tail gas through exhausting system by the present invention
Tower, scrubbed after send boiler to burn again, it is to avoid the discharge of waste gas, reduce environmental protection pressure.
(5) present invention use calcium hydroxide powder or calcium hydroxide emulsion as the dephosphorization agent of calcification dephosphorization, by pH value control
System, 9.5～13, makes calcium hydroxide reach the concentration of necessity, so that precipitation is more abundant, the waste water after calcification processing is sent into useless
Water reaction tank, continues precipitation, can react 30min～3h, and maintain reaction at room temperature or heating-up temperature 40～80 DEG C
The pH value of system is 9.5～13, controls the concentration of calcium hydroxide further, and ensures that reaction fully, reduces the total phosphorus in waste water
Content.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be by total phosphorus concentration
The waste water that the high-concentration phosphorus-containing wastewater of 5000ppm obtains after pH value regulation, calcification dephosphorization sends into waste water reaction pond, and reaction completes
After, add flocculant and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, clear liquid is after treatment
Send into biochemical treatment operation.
Embodiment 2:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be at total phosphorus concentration
The high-concentration phosphorus-containing wastewater of 25000ppm adds pH adjusting agent (hydrochloric acid), by mixing reactor by high-concentration phosphorus-containing wastewater
PH value is adjusted to 2, obtains acidified waste water, the waste water obtained is sent into waste water reaction pond, reacted after acidified waste water calcification dephosphorization
Cheng Hou, adds flocculant and forms solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, and clear liquid is treated
Rear feeding biochemical treatment operation.
Embodiment 3:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be at total phosphorus concentration
The high-concentration phosphorus-containing wastewater of 10000ppm adds pH adjusting agent (nitric acid), by mixing reactor by high-concentration phosphorus-containing wastewater
PH value is adjusted to 0, obtains acidified waste water, the waste water obtained is sent into waste water reaction pond, reacted after acidified waste water calcification dephosphorization
Cheng Hou, adds flocculant and forms solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, and clear liquid is treated
Rear feeding biochemical treatment operation.
Embodiment 4:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be at total phosphorus concentration
The high-concentration phosphorus-containing wastewater of 15000ppm adds pH adjusting agent (sulphuric acid), by mixing reactor by high-concentration phosphorus-containing wastewater
PH value is adjusted to 1, obtains acidified waste water, the waste water obtained is sent into waste water reaction pond, reacted after acidified waste water calcification dephosphorization
Cheng Hou, adds flocculant and forms solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, and clear liquid is treated
Rear feeding biochemical treatment operation.
Embodiment 5:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be by total phosphorus concentration
The high-concentration phosphorus-containing wastewater of 18000ppm carries out pH value regulation, adds dephosphorization agent (hydrogen-oxygen in the phosphorus-containing wastewater after pH value regulates
Change calcium powder), make the pH value of phosphorus-containing wastewater control 9.5, send into hybrid reaction tower after mix homogeneously and react, after reaction
The waste water arrived sends into waste water reaction pond, after having reacted, adds flocculant and forms solidliquid mixture, by solidliquid mixture solid-liquid
Isolated phosphorus cream and clear liquid, biochemical treatment operation sent into after treatment by clear liquid.
Embodiment 6:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be by total phosphorus concentration
The high-concentration phosphorus-containing wastewater of 12000ppm carries out pH value regulation, adds dephosphorization agent (hydrogen-oxygen in the phosphorus-containing wastewater after pH value regulates
Change calcium emulsion), make the pH value of phosphorus-containing wastewater control 13, send into hybrid reaction tower after mix homogeneously and react, after reaction
The waste water arrived sends into waste water reaction pond, after having reacted, adds flocculant and forms solidliquid mixture, by solidliquid mixture solid-liquid
Isolated phosphorus cream and clear liquid, biochemical treatment operation sent into after treatment by clear liquid.
Embodiment 7:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be by total phosphorus concentration
The waste water that the high-concentration phosphorus-containing wastewater of 20000ppm obtains after pH value regulation, calcification dephosphorization sends into waste water reaction pond, by waste water
After stirring mixing, reacting 30 under room temperature or heating condition, the pH value maintaining reaction system is 13, the gas formed in course of reaction
Body delivers to tail gas washing tower through exhausting system, send boiler to burn after washing, after having reacted, adds flocculant (polyaluminium
Aluminum)) and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, phosphorus cream can be used for producing phosphate fertilizer, clearly
Liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into biochemical treatment operation.
Embodiment 8:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be by total phosphorus concentration
The waste water that the high-concentration phosphorus-containing wastewater of 22000ppm obtains after pH value regulation, calcification dephosphorization sends into waste water reaction pond, by waste water
After stirring mixing, reacting 3h under room temperature or heating condition, the pH value maintaining reaction system is 9.5, is formed in course of reaction
Gas delivers to tail gas washing tower through exhausting system, send boiler to burn after washing, after having reacted, adds flocculant (polyaluminum sulfate
Aluminum)) and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, phosphorus cream can be used for producing phosphate fertilizer, clearly
Liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into biochemical treatment operation.
Embodiment 9:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, and this phosphorus removing method is to be by total phosphorus concentration
The waste water that the high-concentration phosphorus-containing wastewater of 21000ppm obtains after pH value regulation, calcification dephosphorization sends into waste water reaction pond, by waste water
After stirring mixing, reacting 2h under room temperature or heating condition, the pH value maintaining reaction system is 10, the gas formed in course of reaction
Body delivers to tail gas washing tower through exhausting system, send boiler to burn after washing, after having reacted, adds flocculant (microbial flocculation
Agent)) and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, phosphorus cream can be used for producing phosphate fertilizer, clearly
Liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into biochemical treatment operation.
Embodiment 10:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, as it is shown in figure 1, this phosphorus removing method includes following step
Rapid:
(1) regulation pH value: add pH adjusting agent (nitric acid) in the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 16000ppm, pass through
The pH value of high-concentration phosphorus-containing wastewater is adjusted to 1 by mixing reactor, obtains acidified waste water；
(2) calcification dephosphorization: add dephosphorization agent (calcium hydroxide emulsion) in acidified waste water, make the pH value of phosphorus-containing wastewater control
13, to send into hybrid reaction tower after mix homogeneously and react, the waste water obtained after reaction sends into waste water reaction pond；
(3), after the waste water in waste water reaction pond being stirred mixing, under room temperature or heating condition, react 1h, maintain reaction system
PH value is 12, and the gas formed in course of reaction delivers to tail gas washing tower through exhausting system, send boiler to burn, reacted after washing
Cheng Hou, adds flocculant (polyaluminium sulfate) and forms solidliquid mixture, solidliquid mixture solid-liquid separation obtains phosphorus cream with clear
Liquid, phosphorus cream can be used for producing phosphate fertilizer, and clear liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into raw
Change treatment process.
Embodiment 11:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, as it is shown in figure 1, this phosphorus removing method includes following step
Rapid:
(1) regulation pH value: add pH adjusting agent (sulphuric acid) in the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 25000ppm, pass through
The pH value of high-concentration phosphorus-containing wastewater is adjusted to 2 by mixing reactor, obtains acidified waste water；
(2) calcification dephosphorization: add dephosphorization agent (calcium hydroxide powder) in acidified waste water, make the pH value of phosphorus-containing wastewater control
13, to send into hybrid reaction tower after mix homogeneously and react, the waste water obtained after reaction sends into waste water reaction pond；
(3), after the waste water in waste water reaction pond being stirred mixing, under room temperature or heating condition, react 3h, maintain reaction system
PH value is 13, and the gas formed in course of reaction delivers to tail gas washing tower through exhausting system, send boiler to burn, reacted after washing
Cheng Hou, adds flocculant (poly-ferric chloride) and forms solidliquid mixture, solidliquid mixture solid-liquid separation obtains phosphorus cream with clear
Liquid, phosphorus cream can be used for producing phosphate fertilizer, and clear liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into raw
Change treatment process.
Embodiment 12:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, as it is shown in figure 1, this phosphorus removing method includes following step
Rapid:
(1) regulation pH value: add pH adjusting agent (hydrochloric acid) in the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 24000ppm, pass through
The pH value of high-concentration phosphorus-containing wastewater is adjusted to 1.5 by mixing reactor, obtains acidified waste water；
(2) calcification dephosphorization: add dephosphorization agent (calcium hydroxide emulsion) in acidified waste water, make the pH value of phosphorus-containing wastewater control
11, to send into hybrid reaction tower after mix homogeneously and react, the waste water obtained after reaction sends into waste water reaction pond；
(3), after the waste water in waste water reaction pond being stirred mixing, under room temperature or heating condition, react 2h, maintain reaction system
PH value is 12, and the gas formed in course of reaction delivers to tail gas washing tower through exhausting system, send boiler to burn, reacted after washing
Cheng Hou, adds flocculant (microbial flocculant) and also forms solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and
Clear liquid, phosphorus cream can be used for producing phosphate fertilizer, and clear liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into
Biochemical treatment operation.
Embodiment 13:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, as it is shown in figure 1, this phosphorus removing method includes following step
Rapid:
(1) regulation pH value: add pH adjusting agent (sulphuric acid) in the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 22000ppm, pass through
The pH value of high-concentration phosphorus-containing wastewater is adjusted to 1 by mixing reactor, obtains acidified waste water；
(2) calcification dephosphorization: add dephosphorization agent (calcium hydroxide powder) in acidified waste water, make the pH value of phosphorus-containing wastewater control
12, to send into hybrid reaction tower after mix homogeneously and react, the waste water obtained after reaction sends into waste water reaction pond；
(3), after the waste water in waste water reaction pond being stirred mixing, under room temperature or heating condition, react 2.5h, maintain reaction system
PH value be 12, in course of reaction formed gas deliver to tail gas washing tower through exhausting system, send boiler to burn after washing, react
After completing, add flocculant (aluminium polychlorid) and also form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and
Clear liquid, phosphorus cream can be used for producing phosphate fertilizer, and clear liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into
Biochemical treatment operation.
Embodiment 14:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, as it is shown in figure 1, this phosphorus removing method includes following step
Rapid:
(1) regulation pH value: add pH adjusting agent (sulphuric acid) in the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 20000ppm, pass through
The pH value of high-concentration phosphorus-containing wastewater is adjusted to 1.8 by mixing reactor, obtains acidified waste water；
(2) calcification dephosphorization: add dephosphorization agent (calcium hydroxide powder) in acidified waste water, make the pH value of phosphorus-containing wastewater control
13, to send into hybrid reaction tower after mix homogeneously and react, the waste water obtained after reaction sends into waste water reaction pond；
(3), after the waste water in waste water reaction pond being stirred mixing, under room temperature or heating condition, react 1h, maintain reaction system
PH value is 12, and the gas formed in course of reaction delivers to tail gas washing tower through exhausting system, send boiler to burn, reacted after washing
Cheng Hou, adds flocculant (polyaluminium sulfate) and forms solidliquid mixture, solidliquid mixture solid-liquid separation obtains phosphorus cream with clear
Liquid, phosphorus cream can be used for producing phosphate fertilizer, and clear liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into raw
Change treatment process.
Embodiment 15:
The present embodiment proposes the phosphorus removing method for high-concentration phosphorus-containing wastewater, as it is shown in figure 1, this phosphorus removing method includes following step
Rapid:
(1) regulation pH value: add pH adjusting agent (nitric acid) in the high-concentration phosphorus-containing wastewater that total phosphorus concentration is 23000ppm, pass through
The pH value of high-concentration phosphorus-containing wastewater is adjusted to 0 by mixing reactor, obtains acidified waste water；
(2) calcification dephosphorization: add dephosphorization agent (calcium hydroxide emulsion) in acidified waste water, make the pH value of phosphorus-containing wastewater control
13, to send into hybrid reaction tower after mix homogeneously and react, the waste water obtained after reaction sends into waste water reaction pond；
(3), after the waste water in waste water reaction pond being stirred mixing, under room temperature or heating condition, react 2h, maintain reaction system
PH value is 10, and the gas formed in course of reaction delivers to tail gas washing tower through exhausting system, send boiler to burn, reacted after washing
Cheng Hou, adds flocculant (polyacrylamide) and forms solidliquid mixture, solidliquid mixture solid-liquid separation obtains phosphorus cream with clear
Liquid, phosphorus cream can be used for producing phosphate fertilizer, and clear liquid can process the effluent clear solution obtaining total phosphorus concentration less than 10ppm further, sends into raw
Change treatment process.
The above, be only presently preferred embodiments of the present invention, and the present invention not does any pro forma restriction, every depends on
Any simple modification of being made above example according to the technical spirit of the present invention, equivalent variations, each fall within the protection of the present invention
Within the scope of.
Claims (10)
1. for the phosphorus removing method of high-concentration phosphorus-containing wastewater, it is characterised in that: described phosphorus removing method is to be by total phosphorus concentration
The waste water that the high-concentration phosphorus-containing wastewater of 5000～25000ppm obtains after pH value regulation, calcification dephosphorization sends into waste water reaction pond,
After having reacted, add flocculant and form solidliquid mixture, solidliquid mixture solid-liquid separation is obtained phosphorus cream and clear liquid, clear liquid
Send into biochemical treatment operation after treatment.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 1, it is characterised in that: described pH value regulates
Including: in high-concentration phosphorus-containing wastewater, add pH adjusting agent, by mixing reactor, the pH value of high-concentration phosphorus-containing wastewater is adjusted
It is 0～2, obtains acidified waste water.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 2, it is characterised in that: described pH adjusting agent
One in hydrochloric acid, nitric acid or sulphuric acid.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 1, it is characterised in that: described calcification dephosphorization
Including: the phosphorus-containing wastewater after pH value regulates adds dephosphorization agent, sends into hybrid reaction tower after mix homogeneously and react.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 4, it is characterised in that: described dephosphorization agent
For calcium hydroxide powder or calcium hydroxide emulsion.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 4, it is characterised in that: described dephosphorization agent
Addition meets the pH value of described phosphorus-containing wastewater and controls 9.5～13.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 1, it is characterised in that: described waste water enters
Behind waste water reaction pond, after waste water stirring mixing, under room temperature or heating condition, react 30min～3h, maintain reaction system
PH value is 9.5～13.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 1, it is characterised in that: reacted described
The gas formed in journey delivers to tail gas washing tower through exhausting system, send boiler to burn after washing.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 1, it is characterised in that: described flocculant selects
One in auto polymerization aluminum chloride, polyaluminium sulfate, poly-ferric chloride, polyacrylamide or microbial flocculant.
Phosphorus removing method for high-concentration phosphorus-containing wastewater the most according to claim 1, it is characterised in that: described clear liquid warp
Obtain the total phosphorus concentration effluent clear solution less than 10ppm after process, send into biochemical treatment operation.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107176766A (en) * | 2017-07-18 | 2017-09-19 | 马鞍山中创环保科技有限公司 | A kind of method of the novel nano photocatalyst treatment waste water of chlopyrifos containing high phosphorus |
| CN110040915A (en) * | 2019-05-23 | 2019-07-23 | 苏州无为环境科技有限公司 | A kind of processing method of organism P wastewater containing high concentration |
| CN110143659A (en) * | 2019-05-25 | 2019-08-20 | 天津金辰博科环保科技发展有限公司 | A kind of sewage denitrification and dephosphorization agent and preparation method thereof |
| CN110762544A (en) * | 2019-11-04 | 2020-02-07 | 重庆大学 | System and method for treating organic waste liquid by using natural gas for auxiliary combustion |
| CN111217477A (en) * | 2019-12-27 | 2020-06-02 | 安道麦股份有限公司 | Method for treating wastewater from phosphorus trichloride production |
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| CN107176766A (en) * | 2017-07-18 | 2017-09-19 | 马鞍山中创环保科技有限公司 | A kind of method of the novel nano photocatalyst treatment waste water of chlopyrifos containing high phosphorus |
| CN110040915A (en) * | 2019-05-23 | 2019-07-23 | 苏州无为环境科技有限公司 | A kind of processing method of organism P wastewater containing high concentration |
| CN110143659A (en) * | 2019-05-25 | 2019-08-20 | 天津金辰博科环保科技发展有限公司 | A kind of sewage denitrification and dephosphorization agent and preparation method thereof |
| CN110762544A (en) * | 2019-11-04 | 2020-02-07 | 重庆大学 | System and method for treating organic waste liquid by using natural gas for auxiliary combustion |
| CN111217477A (en) * | 2019-12-27 | 2020-06-02 | 安道麦股份有限公司 | Method for treating wastewater from phosphorus trichloride production |
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