CN103848540A - Technique for processing ammonia-nitrogen wastewater employing struvite formation - Google Patents

Technique for processing ammonia-nitrogen wastewater employing struvite formation Download PDF

Info

Publication number
CN103848540A
CN103848540A CN201410012829.3A CN201410012829A CN103848540A CN 103848540 A CN103848540 A CN 103848540A CN 201410012829 A CN201410012829 A CN 201410012829A CN 103848540 A CN103848540 A CN 103848540A
Authority
CN
China
Prior art keywords
struvite
ammonia nitrogen
waste water
processing
ammonia
Prior art date
Application number
CN201410012829.3A
Other languages
Chinese (zh)
Inventor
张占晓
刘亚莉
杨凯
刘万平
刘大勇
邓丽君
Original Assignee
洛阳智方环保技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 洛阳智方环保技术有限公司 filed Critical 洛阳智方环保技术有限公司
Priority to CN201410012829.3A priority Critical patent/CN103848540A/en
Publication of CN103848540A publication Critical patent/CN103848540A/en

Links

Abstract

The invention relates to a technique for processing an ammonia-nitrogen wastewater employing struvite formation. The technique comprises the following steps: adding certain magnesium source and phosphorus source to the wastewater, controlling a certain pH value; participating the sediments at the bottom of a reactor after reaction; separating out struvite by solid-liquid separation; entering the wastewater to an anaerobic tank to further process, and marketing the discharged struvite as a controlled release fertilizer, wherein the magnesium source and the phosphorus source respectively are magnesium chloride and sodium hydrogen phosphate; the optimal molar ratio of Mg to N to P is 1.2:1:0.8; the initial ammonia-nitrogen concentration is 210-1260mg/L; the pH of the wastewater is controlled to be 8-9; the solution for adjusting the pH to 2-6mol/L is a sodium hydroxide solution. The technical scheme provided by the invention cannot be limited by the temperature and toxin in water, the design and operation are simple, high-concentration ammonia-nitrogen wastewater can be effectively processed, and the generated struvite sediment is a good controlled release fertilizer. Thus, resource recycling of ammonia-nitrogen is achieved.

Description

A kind of struvite precipitator method are processed the processing method of ammonia nitrogen waste water
Technical field
The present invention relates to a kind of processing method of processing waste water of chemical field, particularly relate to a kind of processing method of struvite precipitator method processing ammonia nitrogen waste water.
Background technology
Industrialized fast development has produced increasing waste water, and these waste water, if do not processed in time, certainly will cause a significant threat global environment and human health.Organic amine product is the important industrial chemicals that purposes is the widest, and in its factory effluent, most of material all contains amino, and these compositions can discharge a large amount of ammonia nitrogens in biodegradation process, need to further remove.The treatment process of high-concentration ammonia nitrogenous wastewater is a lot, as blow-off method, biological process, ion exchange method, the precipitator method etc.Blow-off method energy consumption is large, running cost is high, easy fouling, and cold season stripping efficiency lower.Biological process floor space is large, speed of response is slow, the sludge acclimatization time is long, and undesirable to high-concentration ammonia nitrogenous wastewater treatment effect.
The struvite precipitator method are a kind of new ammonia nitrogen waste water treatment method rising the nineties in 20th century, better to high-concentration ammonia nitrogenous wastewater treatment effect.It is to react with the ammonia nitrogen in waste water and generate precipitation and reach and eliminate the object of ammonia nitrogen by adding certain He Lin source, magnesium source.The magnesium ammonium phosphate sediment wherein generating is a kind of well slow release fertilizer, thereby has realized the resource utilization reuse of ammonia nitrogen.And struvite precipitin reaction is not subject to the restriction of temperature and water intoxication element, design and operation are all very simple, and Low Concentration Ammonia Containing Wastewater is had to certain removal effect, and the ammonia nitrogen waste water of high density is had to very high removal effect.
The struvite precipitator method have efficient, easy feature for the ammonia nitrogen of removing in water.In coking chemical waste water, contain a large amount of organism, volatile phenol, cyanogen etc., ammonia-nitrogen content is high, complicated component, and the coking chemical waste water that the struvite precipitator method are 200-1000mg/L for ammonia nitrogen concentration has higher clearance.
Percolate is that a kind of water quality and the water yield change greatly, COD concentration is high, ammonia-nitrogen content is high, the difficult sewage of microbial nutrition element ratio imbalance, with struvite precipitator method treating refuse percolate, can make the ammonia-nitrogen content of sewage be reduced to 60mg/L from 5500mg/L, and the struvite crystallization generating is very low for the metal ion in percolate and impurity absorption amount.
Breeding wastewater organic concentration is high, and suspended substance is many, and ammonia-nitrogen content is large, processes breeding wastewater can make ammonia-nitrogen content reduce by 90% by the struvite precipitator method.
In a word, the struvite precipitator method are a kind of novel ammonia nitrogen waste water treatment methods, and it has broad application prospects in ammonia nitrogen waste water is processed.
Summary of the invention
The object of the invention is to, provide a kind of struvite precipitator method to process the processing method of ammonia nitrogen waste water, technical problem to be solved is to make ammonia nitrogen waste water treatment method simple, be not subject to the restriction of temperature and water intoxication element, can effectively process the ammonia nitrogen waste water of high density, realize the resource utilization of ammonia nitrogen and reply utilization, thereby be more suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of struvite precipitator method that propose according to the present invention are processed the processing method of ammonia nitrogen waste water, wherein said processing method is: in ammonia nitrogen waste water, add He Lin source, magnesium source, add alkali lye to control pH value, after reaction, precipitate is at reactor bottom, isolate struvite through solid-liquid separation, remaining sewage enters anaerobic pond and further processes.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The aforesaid struvite precipitator method are processed the processing method of ammonia nitrogen waste water, and the starting point concentration of wherein said ammonia nitrogen waste water is 210-1260mg/L.
The aforesaid struvite precipitator method are processed the processing method of ammonia nitrogen waste water, and wherein said magnesium source is magnesium chloride, and described phosphorus source is sodium hydrogen phosphate, and the optimum mole ratio of Mg:N:P when reaction in reactor is 1.2:1:0.8.
The aforesaid struvite precipitator method are processed the processing method of ammonia nitrogen waste water, and wherein said pH value is controlled between 8-9.
The aforesaid struvite precipitator method are processed the processing method of ammonia nitrogen waste water, and wherein said alkali lye is that concentration is the sodium hydroxide solution of 2-6mol/L.
The aforesaid struvite precipitator method are processed the processing method of ammonia nitrogen waste water, and wherein said struvite precipitation is a kind of good slow release fertilizer.
By technique scheme, the processing method that a kind of struvite precipitator method of the present invention are processed ammonia nitrogen waste water at least has following advantages: the present invention is not subject to the restriction of temperature and water intoxication element, design and operation are all very simple, can effectively process the ammonia nitrogen waste water of high density, and the struvite generating precipitation is a kind of good slow release fertilizer, thereby has realized the resource utilization reuse of ammonia nitrogen.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technique means of the present invention, and can be implemented according to the content of specification sheets, and for above and other object of the present invention, feature and advantage can be become apparent, especially exemplified by preferred embodiment, be described in detail as follows below.
Embodiment
Technique means and effect of taking for reaching predetermined goal of the invention for further setting forth the present invention, below in conjunction with preferred embodiment, its embodiment of processing method, step, feature and effect thereof of a kind of struvite precipitator method that propose according to the present invention being processed to ammonia nitrogen waste water, be described in detail as follows.
Processing method of the present invention comprises the struvite precipitator method processing influence factor of ammonia nitrogen waste water and the optimal processing parameter for the treatment of processes.
Processing method of the present invention is specially: in waste water, add certain He Lin source, magnesium source, control certain pH value, after reaction, precipitate is at reactor bottom, isolate struvite through solid-liquid separation, sewage enters anaerobic pond and further processes, and the struvite of discharge is sold as slow release fertilizer.
In above-mentioned technique, described He Lin source, magnesium source is respectively magnesium chloride and sodium hydrogen phosphate, and the optimum mole ratio of Mg:N:P is 1.2:1:0.8, and ammonia nitrogen starting point concentration is 210-1260mg/L, wastewater pH is controlled at 8-9, regulates the sodium hydroxide solution that pH solution used is 2-6mol/L.
The principle that the struvite precipitator method are removed ammonia nitrogen can be described as:
Mg 2++PO 4 3-+NH 4 ++6H 2O→MgNH 4PO 4·6H 2O??(1)
Mg 2++HPO 4 2-+NH 4 ++6H 2O→MgNH 4PO 4·6H 2O+H +??(2)
Mg 2++H 2PO 4 -+NH 4 ++6H 2O→MgNH 4PO 4·6H 2O+2H +??(3)
The formation of struvite is subject to the impact of pH value of solution very large, and suitable pH can make the speed of growth of struvite crystallization keep constant, thereby grows the good struvite crystals of quality, and the utilization ratio of the struvite precipitation producing in processing for ammonia nitrogen waste water can improve a lot.In addition, suitable pH contributes to improve the decreasing ratio of ammonia nitrogen, therefore waste water is adjusted to most important that suitable pH shows.
Mg:N:P reacts with the ratio of 1:1:1, if increase the usage quantity in He Lin source, magnesium source, will make reaction carry out to the right, increased the clearance to ammonia nitrogen, but increasing phosphorus source will cause the increase of phosphor in sewage content after treatment, thereby has brought secondary pollution.Therefore in the time selecting to add ratio, can suitably increase the usage quantity in magnesium source, reduce the usage quantity in phosphorus source simultaneously.
Under same pH condition, the starting point concentration of ammonia nitrogen is larger, and this method is higher to the clearance of ammonia nitrogen, and therefore, this method has good removal effect to high-concentration ammonia nitrogenous wastewater, but Low Concentration Ammonia Containing Wastewater is also had to certain removal effect.
Processing method of the present invention is applicable to the denitrification process of the sewage after precipitation separation, after denitrification process completes, then sewage is pumped into anaerobic technique is further processed.
Take the waste water on certain pig farm as experiment water quality, after measured, its pH is 7.4 below, and ammonia nitrogen concentration is 1260mg/L.
Embodiment 1
Get 500mL waste water, the mode that is 1:1:1 according to the mol ratio of Mg:N:P adds different He Lin sources, magnesium source, with the sodium hydroxide solution regulator solution pH to 8.5 of 3mol/L, stirring makes to react 15min, leave standstill 10min, after solid-liquid separation, get filtrate mensuration, the results are shown in Table 1.
Table 1.
Sequence number He Lin source, magnesium source Ammonia nitrogen removal frank Phosphorus residual content/(mg/L)
1 Magnesium chloride and sodium hydrogen phosphate 86% 40.59
2 Magnesium sulfate and sodium hydrogen phosphate 78% 263.55
3 Magnesium oxide and phosphoric acid 70% 289.43
From above-mentioned table 1, can find out, what ammonia nitrogen removal frank was the highest and phosphorus residual content is minimum is the reaction that uses magnesium chloride and sodium hydrogen phosphate, so magnesium of the present invention source optimal selection is magnesium chloride, and the optimal selection in phosphorus source is sodium hydrogen phosphate.
Embodiment 2
Get 500mL waste water, add according to a certain percentage magnesium chloride and sodium hydrogen phosphate as He Lin source, magnesium source, with the sodium hydroxide solution regulator solution pH to 8.5 of 3mol/L, stir and make to react 15min, leave standstill 10min, after solid-liquid separation, get filtrate mensuration, the results are shown in Table 2.
Table 2.
Sequence number Mg:N:P mol ratio Ammonia nitrogen removal frank Phosphorus residual content/(mg/L)
1 1:1:1 86% 40.59
2 1.2:1:1 89% 37.48
3 1.2:1:0.8 96% 20.67
4 1.4:1:0.8 94% 18.96
From above-mentioned table 2, can find out, ratio the best of Mg:N:P mol ratio when the highest and phosphorus residual content of ammonia nitrogen removal frank is less is 1.2:1:0.8.
Embodiment 3
Get 500mL waste water, the mode that is 1.2:1:0.8 according to the mol ratio of Mg:N:P adds magnesium chloride and sodium hydrogen phosphate respectively as He Lin source, magnesium source, with the extremely different pH of sodium hydroxide solution regulator solution of 3mol/L, stirring makes to react 15min, leave standstill 10min, after solid-liquid separation, get filtrate mensuration, the results are shown in Table 3.
Table 3.
Sequence number PH Ammonia nitrogen removal frank Phosphorus residual content/(mg/L)
1 7.4 69% 124.66
2 8.1 94% 39.27
3 9.2 95% 41.58
4 10.1 81% 82.35
From above-mentioned table 3, can find out, ammonia nitrogen removal frank is higher is respectively 8.1 and 9.2 with the less pH of phosphorus residual content, so the present invention is controlled at pH value between 8-9 most suitable.
Embodiment 4
Waste water is diluted respectively to different multiples, get the waste water that 500mL diluted, the mode that is 1.2:1:0.8 according to the mol ratio of Mg:N:P adds magnesium chloride and sodium hydrogen phosphate as He Lin source, magnesium source, with the sodium hydroxide solution regulator solution pH to 8.5 of 3mol/L, stirring makes to react 15min, leave standstill 10min, after solid-liquid separation, get filtrate mensuration, the results are shown in Table 4.
Table 4.
Sequence number The starting point concentration of ammonia nitrogen waste water/(mg/L) Ammonia nitrogen removal frank Phosphorus residual content/(mg/L)
1 210 67% 132.66
2 400 79% 94.53
3 630 84% 87.42
4 840 90% 61.78
5 1260 96% 44.51
As can be seen from Table 4, under same pH condition, ammonia nitrogen starting point concentration is higher, the method is higher to the clearance of ammonia nitrogen, phosphorus residual content is also fewer, but ammonia nitrogen starting point concentration is while being 210mg/L, and the present invention still can reach 67% to the clearance of ammonia nitrogen, therefore the ammonia nitrogen starting point concentration that, the present invention adapts to is 210-1260mg/L.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (6)

1. the processing method of a struvite precipitator method processing ammonia nitrogen waste water, it is characterized in that described processing method is: in ammonia nitrogen waste water, add He Lin source, magnesium source, add alkali lye to control pH value, after reaction, precipitate is at reactor bottom, isolate struvite through solid-liquid separation, remaining sewage enters anaerobic pond and further processes.
2. the struvite precipitator method according to claim 1 are processed the processing method of ammonia nitrogen waste water, it is characterized in that: the starting point concentration of described ammonia nitrogen waste water is 210-1260mg/L.
3. the struvite precipitator method according to claim 1 are processed the processing method of ammonia nitrogen waste water, it is characterized in that: described magnesium source is magnesium chloride, and described phosphorus source is sodium hydrogen phosphate, and the optimum mole ratio of Mg:N:P when reaction in reactor is 1.2:1:0.8.
4. the struvite precipitator method according to claim 1 are processed the processing method of ammonia nitrogen waste water, it is characterized in that: described pH value is controlled between 8-9.
5. the struvite precipitator method according to claim 1 are processed the processing method of ammonia nitrogen waste water, it is characterized in that: described alkali lye is that concentration is the sodium hydroxide solution of 2-6mol/L.
6. the struvite precipitator method according to claim 1 are processed the processing method of ammonia nitrogen waste water, it is characterized in that: described struvite precipitation is a kind of good slow release fertilizer.
CN201410012829.3A 2014-01-10 2014-01-10 Technique for processing ammonia-nitrogen wastewater employing struvite formation CN103848540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410012829.3A CN103848540A (en) 2014-01-10 2014-01-10 Technique for processing ammonia-nitrogen wastewater employing struvite formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410012829.3A CN103848540A (en) 2014-01-10 2014-01-10 Technique for processing ammonia-nitrogen wastewater employing struvite formation

Publications (1)

Publication Number Publication Date
CN103848540A true CN103848540A (en) 2014-06-11

Family

ID=50856716

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410012829.3A CN103848540A (en) 2014-01-10 2014-01-10 Technique for processing ammonia-nitrogen wastewater employing struvite formation

Country Status (1)

Country Link
CN (1) CN103848540A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107601716A (en) * 2017-10-24 2018-01-19 上海纳米技术及应用国家工程研究中心有限公司 The method for improving guanite precipitation method processing ammonia nitrogen waste water efficiency
CN109502720A (en) * 2018-12-14 2019-03-22 上海电力学院 A method of nitrogen phosphorus in waste water is removed using magnesium salts in desulfurization wastewater
RU2715529C1 (en) * 2019-09-16 2020-02-28 Акционерное общество "Газпромнефть - Омский НПЗ" (АО "Газпромнефть-ОНПЗ") Method of treating waste water from ammonium ions

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030034299A (en) * 2001-10-22 2003-05-09 대한민국(충북대학교총장) Continuous, struvite crystallization apparatus
CN1493528A (en) * 2003-08-29 2004-05-05 南化集团研究院 Chemical precipitation method for treating ammonia nitrogen waste water
CN1872724A (en) * 2006-06-21 2006-12-06 哈尔滨工业大学 Pretreatment method for wastewater of ammonia nitrogen in high density
CN101148301A (en) * 2007-08-21 2008-03-26 南京大学 Method for removing ammonia and nitrogen from coking wastewater
CN102336504A (en) * 2011-09-05 2012-02-01 同济大学 Struvite circulating crystallization method for treating synthetic ammonia wastewater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030034299A (en) * 2001-10-22 2003-05-09 대한민국(충북대학교총장) Continuous, struvite crystallization apparatus
CN1493528A (en) * 2003-08-29 2004-05-05 南化集团研究院 Chemical precipitation method for treating ammonia nitrogen waste water
CN1872724A (en) * 2006-06-21 2006-12-06 哈尔滨工业大学 Pretreatment method for wastewater of ammonia nitrogen in high density
CN101148301A (en) * 2007-08-21 2008-03-26 南京大学 Method for removing ammonia and nitrogen from coking wastewater
CN102336504A (en) * 2011-09-05 2012-02-01 同济大学 Struvite circulating crystallization method for treating synthetic ammonia wastewater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107601716A (en) * 2017-10-24 2018-01-19 上海纳米技术及应用国家工程研究中心有限公司 The method for improving guanite precipitation method processing ammonia nitrogen waste water efficiency
CN109502720A (en) * 2018-12-14 2019-03-22 上海电力学院 A method of nitrogen phosphorus in waste water is removed using magnesium salts in desulfurization wastewater
RU2715529C1 (en) * 2019-09-16 2020-02-28 Акционерное общество "Газпромнефть - Омский НПЗ" (АО "Газпромнефть-ОНПЗ") Method of treating waste water from ammonium ions

Similar Documents

Publication Publication Date Title
Mehta et al. Technologies to recover nutrients from waste streams: a critical review
Van Den Hende et al. Treatment of industrial wastewaters by microalgal bacterial flocs in sequencing batch reactors
Tarayre et al. New perspectives for the design of sustainable bioprocesses for phosphorus recovery from waste
Huang et al. Recovery and removal of ammonia–nitrogen and phosphate from swine wastewater by internal recycling of struvite chlorination product
Ye et al. A critical review on ammonium recovery from wastewater for sustainable wastewater management
Tang et al. Effect of aeration rate on performance and stability of algal-bacterial symbiosis system to treat domestic wastewater in sequencing batch reactors
Daverey et al. Ambient temperature SNAD process treating anaerobic digester liquor of swine wastewater
RU2530060C2 (en) Method for biological purification of ammonium-containing waste water
CN102753489B (en) The anoxic biological phosphate-eliminating simultaneously carried out and nitrogen and recovered energy
De Godos et al. Evaluation of High Rate Algae Ponds for treatment of anaerobically digested wastewater: Effect of CO2 addition and modification of dilution rate
CN103626293B (en) A kind of natural magnetic iron ore biofilter and utilize its synchronous method of removing nitre nitrogen and phosphorus in water
DK2238081T3 (en) AFFALDSSAKTIVERET PROCESS FOR STRIPPING OF PHOSPHORUS AND MAGNESIUM FROM SEWAGE AND struvite-PRODUCTION SYSTEM
KR20130111920A (en) Optimized nutrient removal from wastewater
US7033503B2 (en) Municipal wastewater treatment apparatus and process with a continuous feed and cyclic aeration
CN102849857B (en) Method for treating high-salinity high-concentration ammonia-nitrogen wastewater
US20100314311A1 (en) Method for removing the contamination of c,n utilizing heterotrophic ammonia-oxidizing bacteria
KR20140070544A (en) Microbial production of nitrous oxide coupled with chemical reaction of gaseous nitrous oxide including phosphorus recovery and nitrite reduction to nitrous oxide
Carballa et al. Strategies to optimize phosphate removal from industrial anaerobic effluents by magnesium ammonium phosphate (MAP) production
CN102649616B (en) Comprehensive treatment method for garbage leachate
CN101343133B (en) Comprehensive treatment method for wastewater of livestock and poultry cultivation
CN101555077B (en) Method for treating highly concentrated ammonian wastewater with poor biodegradability by using a multiple-technique combination
Huang et al. Treatment of anaerobic digester effluents of nylon wastewater through chemical precipitation and a sequencing batch reactor process
JP2010201423A (en) High-concentration culture method of denitrifying bacterium contained in activated sludge
Malamis et al. Biological nutrients removal from the supernatant originating from the anaerobic digestion of the organic fraction of municipal solid waste
US20090206028A1 (en) Combined nutrient recovery and biogas scrubbing system integrated in series with animal manure anaerobic digester

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140611

C02 Deemed withdrawal of patent application after publication (patent law 2001)