CN102976520A - High-concentration ammonia-nitrogen wastewater treatment process - Google Patents
High-concentration ammonia-nitrogen wastewater treatment process Download PDFInfo
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- CN102976520A CN102976520A CN2012104984903A CN201210498490A CN102976520A CN 102976520 A CN102976520 A CN 102976520A CN 2012104984903 A CN2012104984903 A CN 2012104984903A CN 201210498490 A CN201210498490 A CN 201210498490A CN 102976520 A CN102976520 A CN 102976520A
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Abstract
The invention discloses a high-concentration ammonia-nitrogen wastewater treatment process. The process comprises the following steps of: draining the high-concentration ammonia-nitrogen wastewater into an adjusting tank for homogenizing; pumping the homogenized waste water into a concrete tank by a lifting pump; adding calcium hydroxide or sodium hydroxide into the concrete tank; after deposition, squeezing the water in the concrete tank to flow to a transition tank; pumping the waste water in the transition tank by a secondary lifting pump into a reactor which is used for heating by introduction steam; quantificationally adding denitriding agent into the reactor before pumping; feeding the effluent in the reactor to a denitriding tower, introducing steam so that the water temperature of the tower body is maintained to be 30-60 DEG C, and performing blast aeration; performing amino recycling and automatically flowing the effluent obtained by denitriding treatment to the transition tank; raising the water of the transition tank to a mixed sinking tank for a third time; quantificationally adding coagulant before pumping so as to perform concrete deposition; draining all sunken slag into a slag storage tank; pressing and filtering the sunken slag and outwardly transporting slag cakes; and flowing the filter liquid back to the adjusting tank. By the process, the high-concentration ammonia-nitrogen wastewater can be effectively treated, and the denitriding ratio is up to over 99.9 percent; and compared with the traditional process, the energy consumption is greatly saved, and the cost is reduced.
Description
Technical field
The present invention relates to wastewater treatment, specifically a kind for the treatment of process for high-concentration ammonia nitrogenous wastewater.
Background technology
High-concentration ammonia nitrogenous wastewater is more unmanageable a kind of in the trade effluent, and its source is wide and quantity discharged is large, in the production department such as metallurgy, chemical industry, chemical fertilizer, petrochemical industry, coking, pharmacy, food and refuse landfill generation is arranged all.In recent years, along with expanding economy, the high-concentration ammonia nitrogenous wastewater that produces therefrom also becomes one of restraining factors of relevant industries development.A large amount of high-concentration ammonia nitrogenous wastewaters enter water body particularly mobile more slowly lake, bay, cause easily algae and other microorganism amount reproductions in the water, form eutrophication pollution, cause water body to deceive smelly, Quality Down, the nitrate of oxidized generation and nitrite also can affect hydrobiont, even human health.Therefore, administer cost-effectively the important topic that high-concentration ammonia nitrogenous wastewater pollutes has become current efforts at environmental protection person's research, be subject to insider's great attention.At present, domestic biological stabilization pond method, A/ O method (being Ano xic/ Ox ic method, is the pre-treatment that the anaerobic hydrolysis technology is applied to ammonia nitrogen waste water), catalytic wet air oxidation, blow-off method and the vaporizing extract process of adopting processed high-concentration ammonia nitrogenous wastewater more.The above several processing high-concentration ammonia nitrogenous wastewater technique all exists
Construction cost is large, processing cost is high, operational conditions is harsh, and the shortcoming such as denitrification effect is undesirable.
Summary of the invention
The present invention aims to provide a kind of cheap, efficient high-concentration ammonia nitrogen waste water treatment method, processes high-concentration ammonia nitrogenous wastewater by adopting the organic composite denitrfying agent.
Realize that technical scheme of the present invention is: (1) enters the equalizing tank homogeneous with high-concentration ammonia nitrogenous wastewater; (2) lift pump with homogeneous after waste water pump into coagulation tank, simultaneous quantitative adds calcium hydroxide or sodium hydroxide, mixes with stirrer, makes the pH value reach 11-12; (3) the coagulation tank water outlet flows automatically to subsider and carries out sedimentation; (4) the subsider water outlet flows automatically to transition tank; (5) the two-stage hoisting pump pumps into logical steam-heated reactor with the waste water in the transition tank, quantitatively adds denitrfying agent before the pump; (6) the reactor water outlet enters denitrification column, passes into steam and makes the tower body water temperature maintain 30 ~ 60 ° of C, carries out blast aeration with centrifugal blower simultaneously; (7) ammonia of separating carries out ammonia and reclaims, and the water outlet after the denitrogenation processing flows automatically to transition tank; (8) the transition tank water outlet rises to mixed deep gouge through for the third time, and quantitative dosing coagulant carries out coagulant precipitation before the pump; (9) all sediments all enter the storage slag bath, by blob of slag outward transport after the pressure filter press filtration, filtrate backflow equalizing tank.
In the described step (5), denitrfying agent is take methylol fiber sodium salt, butyleneglycol desaminase as host, and take multiple activator as auxiliary composite chemical medicament.
In the described step (7), the product that ammonia reclaims is ammoniacal liquor or ammonium sulfate.
In the described step (8), the supernatant liquor pH after the processing is 6 ~ 9, NH
3-N concentration is less than 15 mg/L.
Technique of the present invention can effectively be processed high-concentration ammonia nitrogenous wastewater, and denitrification percent can reach more than 99. 9%, compares with traditional technique and greatly saves energy consumption, reduces cost.
Embodiment
Embodiment 1
A kind of high-concentration ammonia nitrogenous wastewater treatment process, step is as follows: (1) enters the equalizing tank homogeneous with high-concentration ammonia nitrogenous wastewater; (2) lift pump with homogeneous after waste water pump into coagulation tank, simultaneous quantitative adds sodium hydroxide, mixes with stirrer, makes the pH value reach 12; (3) the coagulation tank water outlet flows automatically to subsider and carries out sedimentation; (4) the subsider water outlet flows automatically to transition tank; (5) the two-stage hoisting pump pumps into logical steam-heated reactor with the waste water in the transition tank, quantitatively adds denitrfying agent before the pump; This denitrfying agent is take methylol fiber sodium salt, butyleneglycol desaminase as host; (6) the reactor water outlet enters denitrification column, passes into steam and makes the tower body water temperature maintain 40 ° of C, carries out blast aeration with centrifugal blower simultaneously; (7) ammonia of separating carries out ammonia and reclaims, and product is ammoniacal liquor or ammonium sulfate; Water outlet after the denitrogenation processing flows automatically to transition tank; (8) the transition tank water outlet rises to mixed deep gouge through for the third time, and quantitative dosing coagulant carries out coagulant precipitation before the pump; Supernatant liquor pH after the processing is 7, NH
3-N concentration is less than 15 mg/L; (9) all sediments all enter the storage slag bath, by blob of slag outward transport after the pressure filter press filtration, filtrate backflow equalizing tank.
Embodiment 2
A kind of high-concentration ammonia nitrogenous wastewater treatment process, step is as follows: (1) enters the equalizing tank homogeneous with high-concentration ammonia nitrogenous wastewater; (2) lift pump with homogeneous after waste water pump into coagulation tank, simultaneous quantitative adds calcium hydroxide, mixes with stirrer, makes the pH value reach 11; (3) the coagulation tank water outlet flows automatically to subsider and carries out sedimentation; (4) the subsider water outlet flows automatically to transition tank; (5) the two-stage hoisting pump pumps into logical steam-heated reactor with the waste water in the transition tank, quantitatively adds denitrfying agent before the pump; This denitrfying agent is take methylol fiber sodium salt, butyleneglycol desaminase as host; (6) the reactor water outlet enters denitrification column, passes into steam and makes the tower body water temperature maintain 30 ° of C, carries out blast aeration with centrifugal blower simultaneously; (7) ammonia of separating carries out ammonia and reclaims, and product is ammoniacal liquor or ammonium sulfate; Water outlet after the denitrogenation processing flows automatically to transition tank; (8) the transition tank water outlet rises to mixed deep gouge through for the third time, and quantitative dosing coagulant carries out coagulant precipitation before the pump; Supernatant liquor pH after the processing is 7, NH
3-N concentration is less than 15mg/L; (9) all sediments all enter the storage slag bath, by blob of slag outward transport after the pressure filter press filtration, filtrate backflow equalizing tank.
Claims (4)
1. a high-concentration ammonia nitrogenous wastewater treatment process is characterized in that this technique comprises the steps: that (1) enters the equalizing tank homogeneous with high-concentration ammonia nitrogenous wastewater; (2) lift pump with homogeneous after waste water pump into coagulation tank, simultaneous quantitative adds calcium hydroxide or sodium hydroxide, mixes with stirrer, makes the pH value reach 11-12; (3) the coagulation tank water outlet flows automatically to subsider and carries out sedimentation; (4) the subsider water outlet flows automatically to transition tank; (5) the two-stage hoisting pump pumps into logical steam-heated reactor with the waste water in the transition tank, quantitatively adds denitrfying agent before the pump; (6) the reactor water outlet enters denitrification column, passes into steam and makes the tower body water temperature maintain 30 ~ 60 ° of C, carries out blast aeration with centrifugal blower simultaneously; (7) ammonia of separating carries out ammonia and reclaims, and the water outlet after the denitrogenation processing flows automatically to transition tank; (8) the transition tank water outlet rises to mixed deep gouge through for the third time, and quantitative dosing coagulant carries out coagulant precipitation before the pump; (9) all sediments all enter the storage slag bath, by blob of slag outward transport after the pressure filter press filtration, filtrate backflow equalizing tank.
2. high-concentration ammonia nitrogenous wastewater treatment process according to claim 1 is characterized in that in the described step (5), and denitrfying agent is take methylol fiber sodium salt, butyleneglycol desaminase as host, and take multiple activator as auxiliary composite chemical medicament.
3. high-concentration ammonia nitrogenous wastewater treatment process according to claim 1 is characterized in that in the described step (7), and the product that ammonia reclaims is ammoniacal liquor or ammonium sulfate.
4. high-concentration ammonia nitrogenous wastewater treatment process according to claim 1 is characterized in that in the described step (8), the supernatant liquor pH after the processing is 6 ~ 9, NH
3-N concentration is less than 15 mg/L.
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| CN2012104984903A CN102976520A (en) | 2012-11-29 | 2012-11-29 | High-concentration ammonia-nitrogen wastewater treatment process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570156A (en) * | 2013-10-25 | 2014-02-12 | 常州大学 | Device for separating and recovering ammonia from high-concentration ammonium-nitrogen wastewater |
| CN104528989A (en) * | 2014-12-16 | 2015-04-22 | 江苏百茂源环保科技有限公司 | High-ammonia-nitrogen wastewater treatment ammonia recycling system |
| CN105668810A (en) * | 2016-04-20 | 2016-06-15 | 南京大学 | Environment-friendly compounded denitrification agent and denitrification method |
| CN106007087A (en) * | 2016-07-06 | 2016-10-12 | 扬州奇创环保科技有限公司 | High-concentration ammonia-nitrogen wastewater treatment technology and ammonia recycling system |
| CN106350445A (en) * | 2016-11-09 | 2017-01-25 | 英普（北京）环境科技有限公司 | Membrane contactor-based anaerobic digestive treatment system for side-flow recovery of ammonia nitrogen |
| CN113105018A (en) * | 2021-04-08 | 2021-07-13 | 江苏治水有数环保科技有限公司 | Method for treating high-concentration organic wastewater in imidization process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570156A (en) * | 2013-10-25 | 2014-02-12 | 常州大学 | Device for separating and recovering ammonia from high-concentration ammonium-nitrogen wastewater |
| CN104528989A (en) * | 2014-12-16 | 2015-04-22 | 江苏百茂源环保科技有限公司 | High-ammonia-nitrogen wastewater treatment ammonia recycling system |
| CN105668810A (en) * | 2016-04-20 | 2016-06-15 | 南京大学 | Environment-friendly compounded denitrification agent and denitrification method |
| CN106007087A (en) * | 2016-07-06 | 2016-10-12 | 扬州奇创环保科技有限公司 | High-concentration ammonia-nitrogen wastewater treatment technology and ammonia recycling system |
| CN106007087B (en) * | 2016-07-06 | 2018-10-16 | 扬州奇创环保科技有限公司 | A kind of high-concentration ammonia nitrogenous wastewater treatment process and ammonia recovery system |
| CN106350445A (en) * | 2016-11-09 | 2017-01-25 | 英普（北京）环境科技有限公司 | Membrane contactor-based anaerobic digestive treatment system for side-flow recovery of ammonia nitrogen |
| CN113105018A (en) * | 2021-04-08 | 2021-07-13 | 江苏治水有数环保科技有限公司 | Method for treating high-concentration organic wastewater in imidization process |
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Application publication date: 20130320 |