CN105060387A - Bio-particle preparation method for processing low concentration ammonia nitrogen waste water - Google Patents
Bio-particle preparation method for processing low concentration ammonia nitrogen waste water Download PDFInfo
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- CN105060387A CN105060387A CN201510476623.0A CN201510476623A CN105060387A CN 105060387 A CN105060387 A CN 105060387A CN 201510476623 A CN201510476623 A CN 201510476623A CN 105060387 A CN105060387 A CN 105060387A
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Abstract
The invention relates to a bio-particle preparation method for processing low concentration ammonia nitrogen waste water, which belongs to the waste water processing field. By aiming at the problems of no ideal effect, secondary pollution, high cost and complex operation of low concentration ammonia nitrogen waste water treatment, The method uses charing and modification of reed particles, can enhance the adsorption capability of ammonia nitrogen in ammonia nitrogen waste water, ammonia nitrogen is decomposed by using river sludge, no secondary pollution is generated, reed straw is used, fully utilization on resource is realized, cost is low, operation is convenient. The ammonia nitrogen content of the low concentration ammonia nitrogen waste water is reduced to lower than 1mg/L, and no secondary pollution is generated.
Description
Technical field
The present invention relates to a kind of biological particles preparation method processing Low Concentration Ammonia Containing Wastewater, belong to field of waste water treatment.
Background technology
Ammonia nitrogen in waste water is the important substance of body eutrophication and environmental pollution, any discharge that is unprocessed or that process incomplete nitrogen-containing pollutant can cause the amount reproduction of algae and other microorganisms in water, thus water quality is constantly worsened, oxygen in water can be made time serious to decline, water ecology dysequilibrium, fish kill, acceleration lake is aging.Ammonia nitrogen can cause tap water peculiar smell, increases waterworks operating load; Increase the chlorine consumption in water disinfection and industrial cycle sterilisation process; In industrial application, to some metal, particularly copper has corrodibility; During reusing sewage, in reuse water, ammonia nitrogen can impel the breeding of microorganism in water pipe and watering equipment, forms biofouling, blocking pipe and watering equipment, and affects heat exchange efficiency.In water body, ammonia is oxidized to NO3-N and NO2-N under the effect of nitrifier and nitrococcus, and nitrate can bring out baby's methemoglobinemia by tap water, and the nitrosamine generated after nitrite hydrolysis has strong carinogenicity, directly threatens human health.
According to the difference of ammonia-nitrogen content, ammonia nitrogen waste water can be divided into high-concentration ammonia nitrogenous wastewater (concentration is greater than 500mg/L), middle concentration ammonia nitrogen wastewater (concentration range 50 ~ 500mg/L) and Low Concentration Ammonia Containing Wastewater (concentration range is less than 50mg/L) three class.Wherein Low Concentration Ammonia Containing Wastewater is mainly derived from city domestic sewage.
The treatment process of current Low Concentration Ammonia Containing Wastewater mainly contains electroosmose process, reverse osmosis method, air stripping method, break point chlorination method, Selective ion mode exchange process, biological denitrificaion method etc., wherein electroosmose process and reverse osmosis method cost very high, air stripping method, break point chlorination method and Selective ion mode exchange process generally can only as pre-treatment or subsequent disposal means, biological denitrificaion method economy, effectively, use the most at present, the method for most prospect.Current biological denitrificaion ratio juris is realized by the process that nitrification and denitrification these two is separate, wherein nitrated needs consumes a large amount of oxygen, denitrification then will carry out under anoxic conditions, and need certain carbon source, in process, because Autotrophic nitrification bacterium is under large amount of organic existent condition, aerobic heterotrophic bacterium is not so good as to oxygen and nutraceutical competition, thus cause heterotrophic bacterium to be preponderated, anti-nitration reaction also needs to provide suitable electron donor in addition, is generally organism.Difference due to nitrification and denitrification requires the various combination that result in biological denitrification reactor, such as nitrification and denitrification completes in same mud, i.e. single sludge processes, then realized by the aerobic zone that replaces and anaerobic zone, or nitrification and denitrification completes in different mud, i.e. two sludge system, then the nitrification and denitrification reactor by being separated has come.But no matter be any technique, if nitrated rear, just need nitration waste water to reflux, if nitrated front, then need additional electron donor, thus both increase the complicacy of biological deoxidization technique.The acid of nitrated generation and the alkali of denitrification generation all need additional chemical reagent to neutralize in addition, thus likely cause secondary pollution.
Summary of the invention
The technical problem that the present invention mainly solves: be difficult to reach emission standard for the current process to Low Concentration Ammonia Containing Wastewater, and easily cause secondary pollution, cost is high, complicated operation, the invention provides a kind of utilization to the charing of reed particle and modification, strengthen the adsorptive power to ammonia nitrogen in ammonia nitrogen waste water, use river sludge to decompose ammonia nitrogen simultaneously, without any secondary pollution, achieve making full use of of reed straw resource simultaneously, and cost is low, easy to operate.
In order to achieve the above object, the technical solution adopted in the present invention is:
(1) get distance reed root 15 ~ 20cm reed rod, cutting its length is 25 ~ 30cm, and put into baking oven and dry 20 ~ 35min, temperature is set as 40 ~ 50 DEG C;
(2) put into encloses container by 1/3 of dried reed stalk quantity and carry out silt, the mud after siltization dries under the condition of natural ventilation, for subsequent use; 2/3 of dried reed stalk quantity is put into pulverizer and is ground into 30 ~ 50 orders, then puts it in high pressure cake compressor, is pressed into cake;
(3) above-mentioned suppressed cake is put into stalk coke oven to carbonize under the condition of starvation, cake after charing, through pulverizing, sieve, obtain 30 ~ 50 order powder, then powder is put into blue-green algae liquid and soak, stir with 300r/min simultaneously, sealed after 10 ~ 15min, be filled with nitrogen and the air of its inside is discharged, then soaked 40 ~ 50min under the condition of starvation;
(4) filter above-mentioned with the powder after blue-green algae immersion bubble, the filtrate of gained is fully mixed with the mud after siltization in step (2), granulation, obtain 80 ~ 100 order particles, put into baking oven again to toast, storing temperature is set as 105 ~ 110 DEG C, baking 40 ~ 50min.
In described step (3), the preparation method of blue-green algae liquid is:
(1) get fresh blue-green algae and put into baking oven, temperature is set as 105 ~ 110 DEG C, dries, transfers in charring furnace and under starvation condition, blue-green algae outside surface is carbonized after 15 ~ 30min, and the blue-green algae after being carbonized by outside surface is put into runner milling and is milled into powder;
(2) blue-green algae of powdered after milling is put into container, add water wherein, exceed 0.5 ~ 1cm be advisable with water logging lid blue-green algae powder, be that 5% hydrochloric acid soln regulates pH to be 5.8 ~ 6.3 with massfraction, soak 4.0 ~ 6.0h, add water glass again, temperature is set as 40 ~ 45 DEG C, and sealing stirring 25 ~ 30min, until pH value rises to 8.5 ~ 9.5 in mixed solution, then leave standstill 5 ~ 10min, filter;
(3) above-mentioned filtered liquid is inserted in container, add respectively wherein the acetone of filtrate quality 2 ~ 3%, with filtrate quality 3 ~ 5% cyclopentadiene, stir;
(4) the above-mentioned mixed solution stirred is flowed through the separator column of 80 ~ 100 order calcium carbonate granules fillings, disengaging time is 5 ~ 10min, obtains filtrate, i.e. blue-green algae liquid.
Application method of the present invention: obtained reed particle is 1:5 and river sludge Homogeneous phase mixing in mass ratio, then loading stays in reed rod, the reed rod filled is banded together, one end screen cloth of 2 ~ 3mm wraps as bottom, Low Concentration Ammonia Containing Wastewater is flowed into from other one end, finally to record in the liquid of outflow ammonia-nitrogen content lower than 1mg/L.
Beneficial effect of the present invention:
(1) ammonia-nitrogen content of Low Concentration Ammonia Containing Wastewater can be made to drop to below 1mg/L, simultaneously without any secondary pollution;
(2) reed straw and blue algae resource is made full use of;
(3) cost is low, easy to operate.
Specific embodiments
Get distance reed root 15 ~ 20cm reed rod, cutting its length is 25 ~ 30cm, and put into baking oven and dry 20 ~ 35min, temperature is set as 40 ~ 50 DEG C; Put into encloses container by 1/3 of dried reed stalk quantity and carry out silt, the mud after siltization dries under the condition of natural ventilation, for subsequent use; 2/3 of dried reed stalk quantity is put into pulverizer and is ground into 30 ~ 50 orders, then puts it in high pressure cake compressor, is pressed into cake; Above-mentioned suppressed cake is put into stalk coke oven carbonize under the condition of starvation, cake after charing, through pulverizing, sieve, obtain 30 ~ 50 order powder, then powder is put into blue-green algae liquid and soak, stir with 300r/min simultaneously, sealed after 10 ~ 15min, be filled with nitrogen and the air of its inside is discharged, then soaked 40 ~ 50min under the condition of starvation; Filter above-mentioned with the powder after blue-green algae immersion bubble, the filtrate of gained is fully mixed with the mud after siltization, granulation, obtain 80 ~ 100 order particles, put into baking oven again to toast, storing temperature is set as 105 ~ 110 DEG C, baking 40 ~ 50min.
The preparation method of described blue-green algae liquid is:
(1) get blue-green algae and put into baking oven 20 ~ 30min, temperature is set to 30 ~ 40 DEG C, then dried blue-green algae is put into runner milling and to mill 2 ~ 3min;
(2) blue-green algae after milling is put into container, add water logging wherein and do not have blue-green algae 0.5 ~ 1cm, with massfraction be 5% hydrochloric acid soln regulate pH be 5.8 ~ 6.3, press on blue-green algae mass ratio 1:8 again and add water glass, sealing stirring 25 ~ 30min, temperature is set to 40 ~ 45 DEG C, then leaves standstill 5 ~ 10min, filters;
(3) filtered liquid is put into container, add nickelous nitrate wherein, its quality is 2 ~ 3% of blue-green algae quality, stirs 10 ~ 15min.
Described reed particle 1:5 and the river sludge Homogeneous phase mixing in mass ratio that will obtain, then loading stays in reed rod, the reed rod filled is banded together, one end screen cloth of 2 ~ 3mm wraps as bottom, Low Concentration Ammonia Containing Wastewater is flowed into from other one end, finally to record in the liquid of outflow ammonia-nitrogen content lower than 1mg/L.
Get distance reed root 15cm reed rod 60, cutting its length is 25cm, and put into baking oven and dry 20min, temperature is set as 40 DEG C; Dried 20 reed stalks are put into encloses container and carries out silt, the mud after siltization dries under the condition of natural ventilation, for subsequent use; Dried 40 reed stalks are put into pulverizer and are ground into 30 orders, then put it in high pressure cake compressor, are pressed into cake; Above-mentioned suppressed cake is put into stalk coke oven carbonize under the condition of starvation, cake after charing, through pulverizing, sieve, obtain 30 order powder, then powder is put into blue-green algae liquid and soak, stir with 300r/min simultaneously, sealed after 10min, be filled with nitrogen and the air of its inside is discharged, then soak 40min under the condition of starvation; Filter above-mentioned with the powder after blue-green algae immersion bubble, the filtrate of gained fully mixed with the mud after siltization, granulation, obtain 80 order particles, then put into baking oven and toast, storing temperature is set as 105 DEG C, toasts 40min.
Get the reed particle obtained by the present invention and 214g river sludge Homogeneous phase mixing, then load in 20 reed rods stayed, the reed rod filled is banded together, the screen cloth of one end 2mm wraps as bottom, make ammonia nitrogen concentration be that the ammonia nitrogen waste water of 30mg/L flows into from other one end, finally recording ammonia-nitrogen content in the liquid of outflow is 0.6mg/L.
Get distance reed root 20cm reed rod 90, cutting its length is 30cm, and put into baking oven and dry 35min, temperature is set as 50 DEG C; Dried 30 reed stalks are put into encloses container and carries out silt, the mud after siltization dries under the condition of natural ventilation, for subsequent use; Dried 60 reed stalks are put into pulverizer and are ground into 50 orders, then put it in high pressure cake compressor, are pressed into cake; Above-mentioned suppressed cake is put into stalk coke oven carbonize under the condition of starvation, cake after charing, through pulverizing, sieve, obtain 50 order powder, then powder is put into blue-green algae liquid and soak, stir with 300r/min simultaneously, sealed after 15min, be filled with nitrogen and the air of its inside is discharged, then soak 50min under the condition of starvation; Filter above-mentioned with the powder after blue-green algae immersion bubble, the filtrate of gained fully mixed with the mud after siltization, granulation, obtain 100 order particles, then put into baking oven and toast, storing temperature is set as 110 DEG C, toasts 50min.
Get the reed particle obtained by the present invention and 642g river sludge Homogeneous phase mixing, then load in 60 reed rods stayed, the reed rod filled is banded together, the screen cloth of one end 3mm wraps as bottom, make ammonia nitrogen concentration be that the ammonia nitrogen waste water of 50mg/L flows into from other one end, finally recording ammonia-nitrogen content in the liquid of outflow is 0.5mg/L.
Get distance reed root 18cm reed rod 120, cutting its length is 28cm, and put into baking oven and dry 27min, temperature is set as 45 DEG C; Dried 40 reed stalks are put into encloses container and carries out silt, the mud after siltization dries under the condition of natural ventilation, for subsequent use; Dried 80 reed stalks are put into pulverizer and are ground into 40 orders, then put it in high pressure cake compressor, are pressed into cake; Above-mentioned suppressed cake is put into stalk coke oven carbonize under the condition of starvation, cake after charing, through pulverizing, sieve, obtain 40 order powder, then powder is put into blue-green algae liquid and soak, stir with 300r/min simultaneously, sealed after 13min, be filled with nitrogen and the air of its inside is discharged, then soak 45min under the condition of starvation; Filter above-mentioned with the powder after blue-green algae immersion bubble, the filtrate of gained fully mixed with the mud after siltization, granulation, obtain 90 order particles, then put into baking oven and toast, storing temperature is set as 107 DEG C, toasts 45min.
Get the reed particle obtained by the present invention and 413g river sludge Homogeneous phase mixing, then load in 40 reed rods stayed, the reed rod filled is banded together, the screen cloth of one end 2mm wraps as bottom, make ammonia nitrogen concentration be that the ammonia nitrogen waste water of 45mg/L flows into from other one end, finally recording ammonia-nitrogen content in the liquid of outflow is 0.16mg/L.
Claims (2)
1. process a biological particles preparation method for Low Concentration Ammonia Containing Wastewater, it is characterized in that:
(1) get distance reed root 15 ~ 20cm reed rod, cutting its length is 25 ~ 30cm, and put into baking oven and dry 20 ~ 35min, temperature is set as 40 ~ 50 DEG C;
(2) put into encloses container by 1/3 of dried reed stalk quantity and carry out silt, the mud after siltization dries under the condition of natural ventilation, for subsequent use; 2/3 of dried reed stalk quantity is put into pulverizer and is ground into 30 ~ 50 orders, then puts it in high pressure cake compressor, is pressed into cake;
(3) above-mentioned suppressed cake is put into stalk coke oven to carbonize under the condition of starvation, cake after charing, through pulverizing, sieve, obtain 30 ~ 50 order powder, then powder is put into blue-green algae liquid and soak, stir with 300r/min simultaneously, sealed after 10 ~ 15min, be filled with nitrogen and the air of its inside is discharged, then soaked 40 ~ 50min under the condition of starvation;
(4) filter above-mentioned with the powder after blue-green algae immersion bubble, the filtrate of gained is fully mixed with the mud after siltization in step (2), granulation, obtain 80 ~ 100 order particles, put into baking oven again to toast, storing temperature is set as 105 ~ 110 DEG C, baking 40 ~ 50min.
2. a kind of preparation method of granules processing Low Concentration Ammonia Containing Wastewater according to claim 1, is characterized in that: in described step (3), the preparation method of blue-green algae liquid is:
(1) get fresh blue-green algae and put into baking oven, temperature is set as 105 ~ 110 DEG C, dries, transfers in charring furnace and under starvation condition, blue-green algae outside surface is carbonized after 15 ~ 30min, and the blue-green algae after being carbonized by outside surface is put into runner milling and is milled into powder;
(2) blue-green algae of powdered after milling is put into container, add water wherein, exceed 0.5 ~ 1cm be advisable with water logging lid blue-green algae powder, be that 5% hydrochloric acid soln regulates pH to be 5.8 ~ 6.3 with massfraction, soak 4.0 ~ 6.0h, add water glass again, temperature is set as 40 ~ 45 DEG C, and sealing stirring 25 ~ 30min, until pH value rises to 8.5 ~ 9.5 in mixed solution, then leave standstill 5 ~ 10min, filter;
(3) above-mentioned filtered liquid is inserted in container, add respectively wherein the acetone of filtrate quality 2 ~ 3%, with filtrate quality 3 ~ 5% cyclopentadiene, stir;
(4) the above-mentioned mixed solution stirred is flowed through the separator column of 80 ~ 100 order calcium carbonate granules fillings, disengaging time is 5 ~ 10min, obtains filtrate, i.e. blue-green algae liquid.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478080A (en) * | 2015-12-25 | 2016-04-13 | 常州大学 | Preparation method of biological charcoal |
| CN105540689A (en) * | 2015-12-25 | 2016-05-04 | 常州大学 | Method for treating high-concentration ammonia-nitrogen wastewater by virtue of straws |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478080A (en) * | 2015-12-25 | 2016-04-13 | 常州大学 | Preparation method of biological charcoal |
| CN105540689A (en) * | 2015-12-25 | 2016-05-04 | 常州大学 | Method for treating high-concentration ammonia-nitrogen wastewater by virtue of straws |
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Application publication date: 20151118 |
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