CN109052709A - A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions - Google Patents
A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions Download PDFInfo
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- CN109052709A CN109052709A CN201810894224.XA CN201810894224A CN109052709A CN 109052709 A CN109052709 A CN 109052709A CN 201810894224 A CN201810894224 A CN 201810894224A CN 109052709 A CN109052709 A CN 109052709A
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- Prior art keywords
- nitrogen
- ammonia
- high ammonia
- nitrogen wastewater
- waste water
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Classifications
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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
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
-
- 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
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The present invention relates to a kind of techniques based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions, carry out wastewater treatment in the following order, and through waste collection slot, PH adjustment tank, cold boiler to tail treatment trough, PH adjustment tank also serves as ammonia nitrogen absorber, improve absorption rate.A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions of the present invention, Treated sewage reusing while having reached discharge standard, waste liquid cocnentration factor is big, and no exhaust gas generates, and occupied area is small.
Description
Technical field
The present invention relates to a kind of industrial waste water with high ammoniac nitrogen treatment process, especially a kind of based on evaporation process under acid washing conditions
The technique of high ammonia-nitrogen wastewater.
Background technique
As country increasingly payes attention to environmental protection, in recent years, some large manufacturers introduce external production technology and are given birth to
It produces, the water quality requirement for draining a certain water body to reach sewage or reusing, and it is purified.Sewage treatment is extensive
Applied to every field such as environmental protection, urban landscape, medical treatment, building, agricultural, traffic, the energy, food and drink, petrochemical industry, small water low viscosity
The industrial wastewater of high ammonia nitrogen, pollutant concentration is high, and waste component is complicated, and poisonous and harmful substance is more.We have developed one kind thus
Based on the technique of evaporation process high ammonia-nitrogen wastewater under acid washing conditions, Treated sewage reusing while having reached discharge standard, waste liquid concentration
Than big, no exhaust gas is generated, and occupied area is small.
Summary of the invention
It is provided the invention aims to overcome the deficiencies in the prior art based on the high ammonia nitrogen of evaporation process under acid washing conditions
The technique of waste water.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: one kind is based on the high ammonia of evaporation process under acid washing conditions
The technique of nitrogen waste water, which is characterized in that comprise the steps of:
Step 1: high ammonia-nitrogen wastewater is first collected in waste collection slot, and the capacity that the waste collection slot collects waste water is small
Ammonia-nitrogen content is greater than 3000ppm in 10t/d, the high ammonia-nitrogen wastewater, and the high ammonia-nitrogen wastewater is the industrial wastewater of low viscosity,
The waste collection slot can store one day water；
Step 2: the high ammonia-nitrogen wastewater flow to PH adjustment tank, strong acid is added to the PH adjustment tank, by the high ammonia nitrogen
Waste water is adjusted to strong acid condition, and the PH adjustment tank is tower structure, and the ratio of height to diameter of the PH adjustment tank reaches 5: 1, the PH
Adjustment tank can be used as ammonia nitrogen absorber simultaneously；
Step 3: the high ammonia-nitrogen wastewater under the strong acid condition, which enters in cold boiler, to be evaporated, the high ammonia nitrogen
Condensation ammonia nitrogen after waste water evaporation can be reduced to 200mg/L；
Step 4: the dope after evaporative condenser, waste water flow to tail treatment trough, the outer processing of solidliquid mixture committee of high concentration；
Step 5: the tail treatment trough carries out NH_3-N treating to waste water, the ammonia nitrogen in the waste water be reduced to 20mg/L with
Under；
Step 6: the ammonia nitrogen waste water can be with qualified discharge or reuse when reaching 20mg/L.
Preferably, the Waste water concentrating after the cold boiler is than big, and solid waste or raffinate amount are less than 10%.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
1. high ammonia nitrogen waste liquid cocnentration factor is big, less than 10%, water outlet can reuse for solid waste or raffinate amount；
2. process flow is simple, using MVP evaporation technology, low energy consumption, and no exhaust gas generates；
3. process equipment is few, take up little area, operational management is convenient.
Detailed description of the invention
Fig. 1 is the process diagram of the present invention based on the technique of evaporation process high ammonia-nitrogen wastewater under acid washing conditions；
Wherein: 1, waste water；2, waste collection slot；3, PH adjustment tank；4, strong acid；5, cold boiler；6, tail treatment trough；7,
The outer processing of solidliquid mixture committee；8, qualified discharge or reuse.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
Embodiment one:
A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions, which is characterized in that comprise the steps of:
Step 1: high ammonia-nitrogen wastewater 1 is first collected in waste collection slot 2, and the waste collection slot 2 collects the capacity of waste water
For 9.9t/d, ammonia-nitrogen content is 3001ppm in the high ammonia-nitrogen wastewater 1, and the high ammonia-nitrogen wastewater 1 is the Industry Waste of low viscosity
Water, the waste collection slot 2 can store one day water；
Step 2: the high ammonia-nitrogen wastewater 1 flow to PH adjustment tank 3, strong acid 4 is added to the PH adjustment tank 3, by the height
Ammonia nitrogen waste water 1 is adjusted to strong acid condition, and the PH adjustment tank 3 is tower structure, and the ratio of height to diameter of the PH adjustment tank 3 reaches 5: 1,
The PH adjustment tank 3 can be used as ammonia nitrogen absorber simultaneously；
Step 3: the high ammonia-nitrogen wastewater 1 under the strong acid condition, which enters in cold boiler 5, to be evaporated, the high ammonia
Condensation ammonia nitrogen after nitrogen waste water 1 evaporates can be reduced to 200mg/L；
Step 4: the dope after evaporative condenser, waste water flow to tail treatment trough 6, the outer processing of solidliquid mixture committee of high concentration
7；
Step 5: the tail treatment trough 6 carries out NH_3-N treating to waste water, and the ammonia nitrogen in the waste water is reduced to 20mg/L；
Step 6: the ammonia nitrogen waste water can be with qualified discharge or reuse 8 when reaching 20mg/L.
Preferably, for the Waste water concentrating after the cold boiler 5 than big, solid waste or raffinate amount are 9.5%.
Embodiment two:
A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions, which is characterized in that comprise the steps of:
Step 1: high ammonia-nitrogen wastewater 1 is first collected in waste collection slot 2, and the waste collection slot 2 collects the capacity of waste water
For 9t/d, ammonia-nitrogen content is 4000ppm in the high ammonia-nitrogen wastewater 1, and the high ammonia-nitrogen wastewater 1 is the industrial wastewater of low viscosity,
The waste collection slot 2 can store one day water；
Step 2: the high ammonia-nitrogen wastewater 1 flow to PH adjustment tank 3, strong acid 4 is added to the PH adjustment tank 3, by the height
Ammonia nitrogen waste water 1 is adjusted to strong acid condition, and the PH adjustment tank 3 is tower structure, and the ratio of height to diameter of the PH adjustment tank 3 reaches 5: 1,
The PH adjustment tank 3 can be used as ammonia nitrogen absorber simultaneously；
Step 3: the high ammonia-nitrogen wastewater 1 under the strong acid condition, which enters in cold boiler 5, to be evaporated, the high ammonia
Condensation ammonia nitrogen after nitrogen waste water 1 evaporates can be reduced to 200mg/L；
Step 4: the dope after evaporative condenser, waste water flow to tail treatment trough 6, the outer processing of solidliquid mixture committee of high concentration
7；
Step 5: the tail treatment trough 6 carries out NH_3-N treating to waste water, and the ammonia nitrogen in the waste water is reduced to 19mg/L；
Step 6: the ammonia nitrogen waste water can be with qualified discharge or reuse 8 when reaching 20mg/L.
Preferably, for the Waste water concentrating after the cold boiler 5 than big, solid waste or raffinate amount are 9%.
It is described based under acid washing conditions the advantages of the technique of evaporation process high ammonia-nitrogen wastewater it is as follows:
1. high ammonia nitrogen waste liquid cocnentration factor is big, less than 10%, water outlet can reuse for solid waste or raffinate amount；
2. process flow is simple, using MVP evaporation technology, low energy consumption, and no exhaust gas generates；
3. process equipment is few, take up little area, operational management is convenient.
The above is only specific application examples of the invention, are not limited in any way to protection scope of the present invention.All uses
Equivalent transformation or equivalent replacement and the technical solution formed, all fall within rights protection scope of the present invention.
Claims (2)
1. a kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions, which is characterized in that comprise the steps of:
Step 1: high ammonia-nitrogen wastewater is first collected in waste collection slot, and the capacity that the waste collection slot collects waste water is less than
10t/d, ammonia-nitrogen content is greater than 3000ppm in the high ammonia-nitrogen wastewater, and the high ammonia-nitrogen wastewater is the industrial wastewater of low viscosity, institute
One day water can be stored by stating waste collection slot；
Step 2: the high ammonia-nitrogen wastewater flow to PH adjustment tank, strong acid is added to the PH adjustment tank, by the high ammonia-nitrogen wastewater
It adjusts to strong acid condition, the PH adjustment tank is tower structure, and the ratio of height to diameter of the PH adjustment tank reaches 5: 1, the PH adjustment
Slot can be used as ammonia nitrogen absorber simultaneously；
Step 3: the high ammonia-nitrogen wastewater under the strong acid condition, which enters in cold boiler, to be evaporated, the high ammonia-nitrogen wastewater
Condensation ammonia nitrogen after evaporation can be reduced to 200mg/L；
Step 4: the dope after evaporative condenser, waste water flow to tail treatment trough, the outer processing of solidliquid mixture committee of high concentration；
Step 5: the tail treatment trough carries out NH_3-N treating to waste water, and the ammonia nitrogen in the waste water is reduced to 20mg/L or less；
Step 6: the ammonia nitrogen waste water can be with qualified discharge or reuse when reaching 20mg/L.
2. the technique according to claim 1 based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions, it is characterised in that: described
Waste water concentrating after cold boiler is than big, and solid waste or raffinate amount are less than 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810894224.XA CN109052709A (en) | 2018-08-08 | 2018-08-08 | A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions |
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| CN201810894224.XA CN109052709A (en) | 2018-08-08 | 2018-08-08 | A kind of technique based on evaporation process high ammonia-nitrogen wastewater under acid washing conditions |
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Family
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Citations (12)
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|---|---|---|---|---|
| JP2008207118A (en) * | 2007-02-27 | 2008-09-11 | Hiroshima Univ | Method, apparatus and system for treating ammonia nitrogen-containing waste water |
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| CN207391045U (en) * | 2017-09-15 | 2018-05-22 | 广东闻扬环境科技有限公司 | Ammonia-containing water evaporating |
| CN209537026U (en) * | 2019-02-13 | 2019-10-25 | 江苏春绿机械制造有限公司 | A kind of drop ammonia nitrogen MVR vapo(u)rization system |
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2018
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Application publication date: 20181221 |
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