CN1278958C - Method for removing ammonia nitrogen from reused sewage - Google Patents
Method for removing ammonia nitrogen from reused sewage Download PDFInfo
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- CN1278958C CN1278958C CN 02109493 CN02109493A CN1278958C CN 1278958 C CN1278958 C CN 1278958C CN 02109493 CN02109493 CN 02109493 CN 02109493 A CN02109493 A CN 02109493A CN 1278958 C CN1278958 C CN 1278958C
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- zeolite
- thermopnore
- water
- ammonia nitrogen
- regeneration
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- Treatment Of Water By Ion Exchange (AREA)
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Abstract
The present invention provides a method for removing ammonia nitrogen in reuse waste water. The pH value of raw water is regulated firstly and then is led into a zeolite fluidized bed, the zeolite fluidized bed comprises 3 to 5 series stages, and water in which ammonia nitrogen is removed is led out from the last stage of the zeolite fluidized bed. A zeolite regenerating device is arranged in the zeolite fluidized bed and utilizes regenerating liquid for regeneration, regenerated zeolite returns to the zeolite fluidized bed, and the regenerating liquid circulates between the zeolite regenerating device and a regenerating liquid regenerating device. The present invention has the advantages of high removal rate and low running cost, and treated water can reach the standard of reuse water.
Description
(1) technical field
What the present invention relates to is a kind of treatment process of sewage.Specifically a kind of method of removing the ammonia nitrogen in the sewage.
(2) background technology
Owing to have good feasibility and an economy, adopt biological method during ammonia nitrogen in removing municipal effluent and processing wastewater usually.But some in particular cases also adopt some more suitably processing methodes such as air stripping, ion-exchange, break point chlorination remove ammonia nitrogen in the sewage, to improve removal effect.Because reusing sewage is to Cl
-Require relatively strictness, carbon steel equipment requirement＜300mg/l, for stainless steel equipment requirement＜100mg/l, and the break point chlorination method can leave a large amount of Cl in water
-, do not reach the reuse water requirement.The background technology more approaching with the present invention is to containing the water of ammonia nitrogen, adopt fixed bed zeolite ion-exchanger to handle, reaching the industrial cycle water quality standard.But this technology, containing the former water of ammonia nitrogen, to enter the zeolite ion-exchanger relatively strict to water quality requirement as last, prevents that suspended substance and colloidalmaterial from entering fixedly zeolite beds, causes resistance to increase, and the blocking portion zeolite causes water distribution inequality on the section, reduces the exchange effect.Therefore adopt the technical process of former water → chemical coagulation and precipitation → air supporting → filtration → zeolite fixed bed exchange → charcoal absorption usually.The shortcoming of this technical process is that the water resistance of fixed bed is big, the regeneration difficulty, and the exchange efficiency of zeolite is difficult for improving.
(3) summary of the invention
The object of the present invention is to provide ammonia nitrogen in a kind of, the water after handling low can reach the method for removing ammonia nitrogen of the reused sewage of reuse water standard to ammonia-N removal rate height, running cost.The object of the present invention is achieved like this: former water transfers pH value to handle earlier, introduces the zeolite thermopnore again, and described adjust pH is to use H
2SO
4Or NaOH transfers pH value to 6-10, described zeolite thermopnore is composed in series by the 3-5 level, water behind the ammonia nitrogen removal is drawn from last step zeolite thermopnore, zeolite in the zeolite thermopnore is introduced the zeolite regeneration treatment unit and is carried out manipulation of regeneration with regenerated liquid, zeolite after the manipulation of regeneration returns the zeolite thermopnore, and regenerated liquid circulates between zeolite regeneration treatment unit and regenerated liquid regenerating treater.The invention has the advantages that: adopt placed in-line thermopnore, less demanding to former water can be simplified treatment process, reduces running cost; Because particle diameter is more little, the kinetics situation of ion-exchange is good more, and adsorption surface is big more, and the effect of absorption ammonia nitrogen is just good more, and thermopnore can adopt 50-100 order small particle size zeolite, and the function of exchange of zeolite is given full play to, and can obtain good treatment effect.Adopt 3 zeolite thermopnores to handle, the ammonia nitrogen in the water outlet can be less than 5mg/l; Adopt 4 zeolite thermopnores to handle, the ammonia nitrogen in the water outlet can be less than 3mg/l; Adopt 5 zeolite thermopnores to handle, the ammonia nitrogen in the water outlet can be less than 1mg/l.The stream scooter 20-25m/h of zeolite thermopnore.
(4) description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2, the 3rd, the process flow diagram of two kinds of embodiments of the present invention.
(5) embodiment
For a more detailed description to the present invention for example below:
Embodiment 1.In conjunction with Fig. 1.Through adopting the former water after biochemical process is handled, its ammonia-nitrogen content is about 30mg/l.Former water transfers pH value to handle earlier, uses H
2SO
4Or NaOH transfers pH value to introduce the zeolite thermopnore again to 6-10.The zeolite thermopnore is composed in series by 3 grades.Water behind the ammonia nitrogen removal is drawn from last step zeolite thermopnore, introduces other postprocessing working procedures.Zeolite in each zeolite thermopnore is introduced the zeolite regeneration treatment unit after use after a while, carry out manipulation of regeneration with regenerated liquid.Zeolite after the manipulation of regeneration returns the zeolite thermopnore.Regenerated liquid circulates between zeolite regeneration treatment unit and regenerated liquid regenerating treater.
Embodiment 2.In conjunction with Fig. 2, the difference of present embodiment and embodiment 1 was former water before entering the zeolite thermopnore, increased stripping and removed the ammonia nitrogen operation.Present embodiment is suitable for handling and contains the ammonia nitrogen amount than higher former water.
Embodiment 3.In conjunction with Fig. 3, present embodiment is the technology of refinery second-stage treatment discharge water being carried out Treatment for Reuse.Adding earlier NaOH in containing the refinery second-stage treatment discharge water of ammonia nitrogen less than 30mg/l transfers pH value to 6-10; Introduce 4 grades of placed in-line zeolite thermopnores after transferring pH value, the particle diameter of zeolite thermopnore mesolite is at the 50-100 order, and the reaction times of every grade of zeolite thermopnore is 10-20 minute; The water outlet of last step zeolite thermopnore enters coagulative precipitation tank, adds the activated silicic acid aqueous solution of Tai-Ace S 150 and 5% in coagulative precipitation tank, and its add-on is that water per ton adds Tai-Ace S 150 40-60 gram, 5% activated silicic acid aqueous solution 1-2 liter; Behind coagulating sedimentation, enter air flotation pool and enter clean water basin again; Recycle pump and pressure air-dissolving device are arranged between clean water basin and the air flotation pool; Take over filter behind the clean water basin; Taking over a job property canister behind the strainer goes out activated carbon canister and enters reclaiming system.Zeolite in each zeolite thermopnore is introduced the zeolite regeneration treatment unit after use after a while, carry out manipulation of regeneration with regenerated liquid.Zeolite after the manipulation of regeneration returns the zeolite thermopnore.Regenerated liquid circulates between zeolite regeneration treatment unit and regenerated liquid regenerating treater.If the ammonia nitrogen in the refinery second-stage treatment discharge water greater than 30mg/l, increased the stripping operation before one-level zeolite thermopnore.
Claims (3)
1, a kind of method for removing ammonia nitrogen of reused sewage, former water transfer pH value to handle earlier, introduce the zeolite thermopnore again, and it is characterized in that: described adjust pH is to use H
2SO
4Or NaOH transfers pH value to 6-10, described zeolite thermopnore is composed in series by the 3-5 level, water behind the ammonia nitrogen removal is drawn from last step zeolite thermopnore, zeolite in the zeolite thermopnore is introduced the zeolite regeneration treatment unit and is carried out manipulation of regeneration with regenerated liquid, zeolite after the manipulation of regeneration returns the zeolite thermopnore, and regenerated liquid circulates between zeolite regeneration treatment unit and regenerated liquid regenerating treater.
2, the method for removing ammonia nitrogen of reused sewage according to claim 1 is characterized in that: former water had stripping to remove the ammonia nitrogen operation before entering the zeolite thermopnore.
3, the method for removing ammonia nitrogen of reused sewage according to claim 1 and 2, it is characterized in that: the water that goes out last step zeolite thermopnore enters coagulative precipitation tank, the activated silicic acid aqueous solution that in the coagulant precipitation pond, adds Tai-Ace S 150 and 5%, its add-on is a Tai-Ace S 150 40-60g/T water, 5% activated silicic acid aqueous solution 1-2l/T water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109493 CN1278958C (en) | 2002-04-15 | 2002-04-15 | Method for removing ammonia nitrogen from reused sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109493 CN1278958C (en) | 2002-04-15 | 2002-04-15 | Method for removing ammonia nitrogen from reused sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1451615A CN1451615A (en) | 2003-10-29 |
| CN1278958C true CN1278958C (en) | 2006-10-11 |
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ID=29220821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02109493 Expired - Fee Related CN1278958C (en) | 2002-04-15 | 2002-04-15 | Method for removing ammonia nitrogen from reused sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1278958C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211246B (en) * | 2013-06-03 | 2016-08-10 | 洁海瑞泉膜技术（北京）有限公司 | A kind of Low Concentration Ammonia Containing Wastewater or feed liquid processing method |
| CN103466893B (en) * | 2013-09-22 | 2014-10-08 | 金晨光 | Sewage recycling comprehensive treatment system |
| CN103570096A (en) * | 2013-10-25 | 2014-02-12 | 常州大学 | Device for treating high-concentration ammonia nitrogen in rare earth wastewater in high-intensity dispersion way by using surfactant |
| CN108358271A (en) * | 2018-03-16 | 2018-08-03 | 上海力脉环保设备有限公司 | A kind of ammonia nitrogen absorption zeolite fluid bed reproducible and its application |
| CN108751325A (en) * | 2018-06-07 | 2018-11-06 | 成都恩承科技股份有限公司 | A kind of ammonia nitrogen waste water processing system and ammonia nitrogen waste water treatment method |
-
2002
- 2002-04-15 CN CN 02109493 patent/CN1278958C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1451615A (en) | 2003-10-29 |
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