CN108117190A - A kind of technique of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing - Google Patents
A kind of technique of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing Download PDFInfo
- Publication number
- CN108117190A CN108117190A CN201711334640.6A CN201711334640A CN108117190A CN 108117190 A CN108117190 A CN 108117190A CN 201711334640 A CN201711334640 A CN 201711334640A CN 108117190 A CN108117190 A CN 108117190A
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- phosphate fertilizer
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- low concentration
- waste water
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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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of techniques of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing, it is related to traditional phosphate fertilizer, the Low Concentration Ammonia Containing Wastewater low-cost processes of phosphatic compound fertilizer enterprise and the new process of recycling, concrete technology flow process mainly includes Wastewater Pretreatment precipitation, plate compression, the processing of secondary membrane concentrate, synthetic reaction, secondary plate compression and postprocessing working procedures, the low concentration ammonia nitrogen content concentrate for utilizing the combination technique based on film process that will contain in waste water, substantially reduces processing cost；Ammonium magnesium phosphate fertilizer is produced with the magnesium resource added in using resources such as ammonia nitrogen, the phosphorus in waste water, lifting waste water recycling value creates economic benefit；Waste residue in processing procedure enters production of phosphate fertilizer system as base-material, and treated, and fresh water recycles, and entire processing procedure is generated without the new three wastes, environmental issue caused by so as to thoroughly solve discharge of wastewater.The present invention can effectively solve phosphate fertilizer, the processing problem of phosphatic compound fertilizer enterprise ammonia nitrogen waste water after implementing.
Description
Technical field
The present invention relates to a kind of techniques of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing, belong to phosphorous chemical industry field.
Technical background
Traditional phosphate fertilizer, the product of phosphatic compound fertilizer enterprise mainly have the products such as phosphorus ammonium class, phosphorus compound fertilizer class, phosphoric acid salt,
Larger amount of Low Concentration Ammonia Containing Wastewater can be generated in production process, due to resource concentration in waste water（Such as nitrogen, phosphorus）It is relatively low, it is not achieved
Valueization producing level and discharge standard requirement, if outer row needs the processing cost of both expensive that wastewater treatment is up to standard, and
Directly discharge can generate environmental issue again, therefore the ammonia nitrogen waste water of this kind of low concentration becomes phosphate fertilizer, phosphatic compound fertilizer enterprise
A great problem.
The method of phosphorus and the such waste water of phosphatic compound fertilizer business processes is mainly two kinds at present, first, being followed in production system
Ring uses, such as dry washing tail gas water, condensed water, but since macrocyclic recycle causes foreign ion in waste water
Enrichment affects its using effect and further influences product quality to a certain extent, therefore meeting portion after long period recycling
Divide and drain into sewage disposal system processing；Second is that being immediately discharged to sewage disposal system processing, passed through after being neutralized mostly using lime into one
Walk advanced treating rear discharge up to standard.In terms of two kinds of exemplary processing methods of current waste water, such waste water be all finally to spend it is high
Expensive processing cost, and resource therein is not utilized effectively.
The content of the invention
The purpose of the present invention is being directed to above-mentioned problem, a kind of technique of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing is provided, from
Processing cost and two aspect of valueization recycling solve environmental protection and efficiency problem.
The present invention is using phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater as raw material, by pre-processing precipitation, plate compression, two level film process
Concentrate, synthetic reaction, secondary plate compression and postprocessing working procedures production ammonium magnesium phosphate fertilizer, reach low-cost processes low concentration ammonia
Nitrogen waste water, the purpose for solving its environmental issue.
Specific process parameter is：1. pretreatment precipitation：It is primarily referred to as adding a certain amount of flocculant and precipitate under certain condition,
Addition flocculant concentration is 0.1% polyacrylamide solution, after addition in solution the content of polyacrylamide 0.01%-
0.05%, sedimentation time 12h；2. plate compression：Solution after precipitation is filtered, filter residue enters production of phosphate fertilizer system, filtrate into
Enter the next step use；3. two level film process concentrate：It is the most ammonia nitrogen at last by two steps ro film step by step concentration by filtrate
Concentration is carried to 4% -6%, 20 DEG C -50 DEG C for the treatment of temperature, processing pressure≤8MPa, and for gained fresh water in production system reuse, gained is dense
Water enters the next step；4. synthetic reaction：Concentrated water and the magnesium chloride of addition are reacted into production ammonium magnesium phosphate under certain condition,
Phosphorus, nitrogen, magnesium material proportion are 1.05 in 40-60 DEG C of controlling reaction temperature, reaction time 2-6h, reaction pH8-10, reaction solution:
1：1.1, after reaction into the next step；5. secondary plate compression:By the reaction solution press filtration of a upper process, filtrate returns
Two level film process concentrate process recycles, and filter residue enters the next step；6. it post-processes：The filter residue that a upper process is obtained dries
It is dry, broken, obtain product ammonium magnesium phosphate fertilizer.
In above-mentioned technique, the waste water comes from phosphate fertilizer, phosphorus compound fertilizer and the production of phosphate fertilizer enterprise using ammonia and ammonium salt as raw material,
PH value of waste water is 2-6, and temperature is not more than 80 DEG C, and solid content is 0.1%-3%, and ingredient mainly includes：Ammonia-nitrogen content
100ppm—20000ppm；Total phosphorus 10ppm -200ppm；Fluorine 10ppm -100ppm.
Beneficial effects of the present invention：Using the technique productions ammonium magnesium phosphate fertilizer product of the present invention, raw materials used is phosphate fertilizer
The intractable Low Concentration Ammonia Containing Wastewater of factory, raw material belong to one of factory's " three wastes ", and low-phosphorous, the nitrogen in waste water are recycled using this method
Etc. resources production high value ammonium magnesium phosphate fertilizer, create certain economic value, and treated that mother liquor cycles in system
It uses, obtained fresh water can return production system supplement water, by adding a certain amount of magnesium salts by resources such as nitrogen, phosphorus with ammonium magnesium phosphate shape
Formula is precipitated out, and final production ammonium magnesium phosphate fertilizer so that nitrogen, the recycling of phosphor resource valueization in waste water；In processing procedure
Waste residue enter production of phosphate fertilizer system as base-material, entire processing procedure is generated without the new three wastes so that resource has obtained maximum limit
Degree utilizes, and while economic benefit is created, and solves environmental issue, realizes Enterprises formula economic development.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
Embodiment 1
1000g washes is taken, the polyacrylamide solution that 100g concentration is 0.1% is added in thereto, was taken out after precipitating 12h
Filter, filtrate enter the indexs such as two level film process concentration unit, control operation pressure 6MPa, temperature 50 C, producing water ratio 60% so that
Ammonia nitrogen concentration reaches about 6% in concentrated water, adds in a certain amount of magnesium salts so that phosphorus in solution, nitrogen, the amount ratio of substance of magnesium are 1.05:1:
1.1,50 DEG C, reaction time 4h of controlling reaction temperature, react pH9.0, filter after reaction, filter cake 85 DEG C drying 6 it is small when,
Obtain product ammonium magnesium phosphate fertilizer.
Measure total phosphorus content 29.1% in product, content of magnesia 16.4%, nitrogen content 5.62%.Ammonia in treated fresh water
Nitrogen content 9ppm.
Embodiment 2
1000g washes is taken, the polyacrylamide solution that 100g concentration is 0.1% is added in thereto, was taken out after precipitating 12h
Filter, filtrate enter the indexs such as two level film process concentration unit, control operation pressure 4MPa, 40 DEG C of producing water ratios 80% of temperature so that dense
Ammonia nitrogen concentration reaches about 5% in water, adds in a certain amount of magnesium salts so that phosphorus in solution, nitrogen, the amount ratio of substance of magnesium are 1.05:1:
1.1,60 DEG C, reaction time 2h of controlling reaction temperature, react pH10, filter after reaction, filter cake 85 DEG C drying 6 it is small when,
Obtain product ammonium magnesium phosphate fertilizer.
Measure total phosphorus content 28.8% in product, content of magnesia 15.9%, nitrogen content 5.77%.Ammonia in treated fresh water
Nitrogen content 14ppm.
Embodiment 3
1000g washes is taken, the polyacrylamide solution that 100g concentration is 0.1% is added in thereto, was taken out after precipitating 12h
Filter, filtrate enter the indexs such as two level film process concentration unit, control operation pressure 8MPa, 40 DEG C of producing water ratios 70% of temperature so that dense
Ammonia nitrogen concentration reaches about 6% in water, adds in a certain amount of magnesium salts so that phosphorus in solution, nitrogen, the amount ratio of substance of magnesium are 1.05:1:
1.1,40 DEG C, reaction time 6h of controlling reaction temperature, react pH8.1, filter after reaction, filter cake 85 DEG C drying 6 it is small when,
Obtain product ammonium magnesium phosphate fertilizer.
Measure total phosphorus content 28.89% in product, content of magnesia 15.93%, nitrogen content 5.83%.In treated fresh water
Ammonia-nitrogen content 10ppm.
Claims (2)
1. a kind of technique of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing, it is characterized in that the preparation process is broadly divided into six technique steps
Suddenly：1. pretreatment precipitation；2. plate compression；3. two level film process concentrate；4. synthetic reaction；5. secondary plate compression；After 6.
Reason；Wherein pretreatment settling step is primarily referred to as adding a certain amount of flocculant precipitates under certain condition, adds flocculant concentration
For 0.1% polyacrylamide solution, 0.01% -0.05%, the sedimentation time is the content of polyacrylamide in solution after addition
12h；Plate compression step is to filter the solution after precipitation, and filter residue enters production of phosphate fertilizer system, and filtrate enters the next step
It uses；Two level film process concentrate step be by filtrate by two steps ro film step by step concentration, most at last ammonia nitrogen concentration carry to
4% -6%, 20 DEG C -50 DEG C for the treatment of temperature, processing pressure≤8MPa, gained fresh water is under production system reuse, gained concentrated water entrance
One step process；Synthetic reaction process is that concentrated water and the magnesium chloride of addition are reacted production ammonium magnesium phosphate under certain condition, is controlled
Phosphorus, nitrogen, magnesium material proportion are 1.05 in 40-60 DEG C of reaction temperature, reaction time 2-6h, reaction pH8-10, reaction solution：1：
1.1, after reaction into the next step；Secondary plate compression step is by the reaction solution press filtration of a upper process, and filtrate is returned
It returns two level film process concentrate process to recycle, filter residue enters the next step；Postprocessing working procedures obtain a upper process
Filter residue drying crushes, and obtains product ammonium magnesium phosphate fertilizer.
2. the technique of phosphate fertilizer plant's Low Concentration Ammonia Containing Wastewater processing as described in claim 1, it is characterized in that：The waste water comes from
Phosphate fertilizer, phosphorus compound fertilizer and using ammonia and ammonium salt as the production of phosphate fertilizer enterprise of raw material, pH value of waste water is 2-6, and temperature is not more than 80 DEG C, Gu
Content is 0.1% -3%, and ingredient mainly includes：Ammonia-nitrogen content 100ppm -20000ppm；Total phosphorus 10ppm -200ppm；Fluorine
10ppm—100ppm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711334640.6A CN108117190B (en) | 2017-12-14 | 2017-12-14 | Process for treating low-concentration ammonia nitrogen wastewater of phosphate fertilizer plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711334640.6A CN108117190B (en) | 2017-12-14 | 2017-12-14 | Process for treating low-concentration ammonia nitrogen wastewater of phosphate fertilizer plant |
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| CN108117190A true CN108117190A (en) | 2018-06-05 |
| CN108117190B CN108117190B (en) | 2021-04-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911876A (en) * | 2019-03-22 | 2019-06-21 | 山东亚邦化工科技有限公司 | The production method and device of six water ammonium magnesium phosphates |
| CN110282783A (en) * | 2019-07-23 | 2019-09-27 | 格丰科技材料有限公司 | A kind of processing system and processing method of phosphorus ammonium wastewater from chemical industry |
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| DE10117497A1 (en) * | 2001-04-04 | 2002-10-17 | Petkus Wutha Sortier Und Aufbe | Agricultural sludge comprises given range of dry matter and pH prior to filtration and de-watering |
| CN101139144A (en) * | 2007-08-16 | 2008-03-12 | 贵州宏福实业开发有限总公司 | Method for processing acidity ammonium nitrogen wastewater in fertilizer plant by using membrane separation |
| CN102190386A (en) * | 2011-04-02 | 2011-09-21 | 总装备部工程设计研究总院 | Ammonia-controllable recovery method of high ammonia nitrogen waste water based on membrane technology |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10117497A1 (en) * | 2001-04-04 | 2002-10-17 | Petkus Wutha Sortier Und Aufbe | Agricultural sludge comprises given range of dry matter and pH prior to filtration and de-watering |
| CN101139144A (en) * | 2007-08-16 | 2008-03-12 | 贵州宏福实业开发有限总公司 | Method for processing acidity ammonium nitrogen wastewater in fertilizer plant by using membrane separation |
| CN102190386A (en) * | 2011-04-02 | 2011-09-21 | 总装备部工程设计研究总院 | Ammonia-controllable recovery method of high ammonia nitrogen waste water based on membrane technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911876A (en) * | 2019-03-22 | 2019-06-21 | 山东亚邦化工科技有限公司 | The production method and device of six water ammonium magnesium phosphates |
| CN110282783A (en) * | 2019-07-23 | 2019-09-27 | 格丰科技材料有限公司 | A kind of processing system and processing method of phosphorus ammonium wastewater from chemical industry |
| CN110282783B (en) * | 2019-07-23 | 2021-10-22 | 格丰科技材料有限公司 | Ammonium phosphate chemical wastewater treatment system and method |
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