CN103964646B - The method of a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water - Google Patents
The method of a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water Download PDFInfo
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- CN103964646B CN103964646B CN201410213250.3A CN201410213250A CN103964646B CN 103964646 B CN103964646 B CN 103964646B CN 201410213250 A CN201410213250 A CN 201410213250A CN 103964646 B CN103964646 B CN 103964646B
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Abstract
The present invention discloses the method for a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water, comprises the following steps: 1) first pending waste water enter equalizing tank process; 2) will in equalizing tank process; 3) by 2) water outlet pump in fast mixed pond, in fast mixed pond, add flocculation agent PAC carry out flocculation preliminary precipitation; 4) anaerobic-aerobic process; 5) water body enters in second pond the concentration of microbial flocculant and 5% volume adding 7.5% volume is the CaCl of 1 ~ 1.5%
2solution, makes liquid be the high-performance modified ceramic filter material of 3 ~ 5mm and the quartz sand thickness be laid on bottom it by particle diameter again after mixing 8 ~ 10min; 6) step 5) water outlet introducing attapulgite adsorption tank, further adsorption bleaching, remove micropollutant, disinfection of effluent, described attapulgite adsorption tank is provided with attapulgite, this attapulgite is arranged Pt wire netting, and appendix has Fe
2o
3or CuO and NaCl; Finally water is entered in water collecting basin.
Description
Technical field
The invention belongs to field of waste water treatment, be specifically related to the novel method of a kind of anaerobic-aerobic-biofloculation intensive treatment waste water.
Background technology
Along with the fast development of China's rural and urban industry, trade effluent content in municipal wastewater is more and more higher, the trade effluent content of the sewage work of a lot of Industry Development Area or Economy Garden is more than 80%, the biodegradability extreme difference of sewage, the difficulty of sewage disposal is increasing, processing cost is more and more higher, but water outlet still cannot meet the emission standard of national compulsory.Traditional active sludge treatment process cannot meet current increasingly strict municipal wastewater qualified discharge requirement completely.
Wherein, in high concentrated organic wastewater, ammonia-nitrogen content and COD are very high, denitrification process carbon source is not enough, COD can be up to standard often to adopt conventional process pattern, total nitrogen is then difficult to up to standard, and the suspended particle, dissolved phenols etc. containing a large amount of not free settling in waste water, be not easily removed also not readily biodegradable.Method of wastewater treatment of the prior art all can not meet the requirement of removing above-mentioned substance and content completely, brings obstruction to wastewater treatment and recycling.
Summary of the invention
The present invention is to overcome deficiency of the prior art, the method of a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water is provided, can effectively remove ammonia nitrogen, suspended particle, dissolved phenols, micro-contaminant trace species etc., and make effluent quality reach reuse water water quality requirement.
For achieving the above object, present invention employs following technical scheme: the method for a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water, is characterized in that comprising the following steps:
1) first pending waste water enter equalizing tank, arranges aeration tube and carry out preaeration to pending waste water, and aeration intensity is 160 ~ 170m
3/ (hm
2), pending waste water is mixed and regulates its pH value to be 7 ~ 8;
2) waste water after process in equalizing tank is passed through grid device, remove the larger floating matter in waste water and impurity;
3) by 2) water outlet pump in fast mixed pond, in fast mixed pond, add flocculation agent PAC carry out flocculation preliminary precipitation, the best feed rate of flocculation agent PAC is 180 ~ 190mg/L, with the speed rapid stirring 5min of 220r/min, then with the speed low rate mixing 15min of 80r/min, stop afterwards stirring and leaving standstill 30min, flocculate precipitate is rationally discharged and supernatant liquor is pumped in anaerobic biochemical reactor;
4) in anaerobic biochemical reactor, carry out anaerobic biochemical treatment, water body after treatment enters in aerobic biochemical reactor, carries out aerobic treatment;
5) concentration entering in second pond through above-mentioned treated water body microbial flocculant and 5% volume adding 7.5% volume is the CaCl of 1 ~ 1.5%
2solution, makes liquid be the high-performance modified ceramic filter material of 3 ~ 5mm and the quartz sand thickness be laid on bottom it by particle diameter again after mixing 8 ~ 10min;
6) step 5) water outlet introducing attapulgite adsorption tank, further adsorption bleaching, remove micropollutant, disinfection of effluent, described attapulgite adsorption tank is provided with attapulgite, this attapulgite is arranged Pt wire netting, and appendix has Fe
2o
3or CuO and NaCl; Finally water is entered in water collecting basin.
Preferably, step 1) in aeration intensity be 165m
3/ (hm
2).
In above-mentioned either a program preferably, step 2) in attapulgite can replace with polyurethane foam.
In above-mentioned either a program preferably, step 3) and 4) in anaerobic biochemical reactor can adopt CGSB (EGSB) or up flow anaerobic sludge blanket reactor (UASB) or internal-circulation anaerobic reactor (IC).
In above-mentioned either a program preferably, step 4) in aerobic biochemical reactor can adopt BAF (BAF) or sbr reactor device or moving-bed membrane bioreactor (MBBR).
Described microbial flocculant chooses the mixture of rhodococcus erythropolis and Rhodococcus as fermented bacterium, and blending ratio is volume ratio 1: 1;
Substratum is: glucose 10g/L (or uronic acid 10g/L, or ethanol 10g/L or sorbyl alcohol 10g/L or N.F,USP MANNITOL 10g/L), ammonium sulfate 0.5g/L, yeast extract paste 2g/L, K
2hPO
42g/L, MgSO
40.5g/L, NaCl0.5g/L, vitamins C 0.1g/L;
Culture condition is: pH value 7.0-7.2, cultivates 72h for shaking speed 130r/min, 25-26 DEG C; Described microbial flocculant to the flocculating rate of kaolinic suspension higher than 90%.
Uronic acid, ethanol, sorbyl alcohol and N.F,USP MANNITOL, as the carbon source of Rhodococcus fermention medium, can reduce costs substratum, improve the activity of flocculation agent.
The described method with microbial flocculant process waste water, step 2) in attapulgite (commercially available) the attapulgite plate that is template, described attapulgite plate with attapulgite, flyash, carbosphere for main raw material, take clay as binding agent, take cement expansive material as swelling agent, the parts by weight of the weighing scale of its each component are: attapulgite 50-70 part, flyash 30-60 part, and carbosphere 20-45 part, clay are 5-8 part, cement expansive material is 1-3 part; Template is squeezed into after described said components mixes according to the above ratio.This template lightweight attapulgite plate, its loose volume weight 551kg/m
3left and right, particle unit weight 100kg/m
3left and right, water-intake rate about 48.44%, hydrochloric acid soluble rate about 0.24%, this lightweight attapulgite can reach the specification of quality of material for water treatment.
Described carbosphere can be commercially available common carbosphere, such as carbonaceous mesophase spherules.
Described anaerobic-aerobic--the method for microbial flocculation intensive treatment waste water, described step 2) in attapulgite can replace with foamed metal.
Described anaerobic-aerobic--the method for microbial flocculation intensive treatment waste water, when described step 2) in attapulgite when replacing with foamed metal, described foamed metal adopts electrochemical plating preparation.
The invention has the beneficial effects as follows:
1. equalizing tank is provided with aeration tube and carries out preaeration to waste water, both can homogenizing water quality, can ensure that again particulate matter does not deposit in equalizing tank.And regulate the reasonable pH value of pending waste water, be conducive to microbial flocculant and adsorb colloidal solid by electrical counteract, its molecular chain fully stretches simultaneously, is also conducive to bridge linking effect.
2. larger floating matter can be removed by grid device.
3. pre-treatment of flocculating effectively can remove suspended substance in former water and colloidalmaterial.
4. the long-chain in waste water, larger molecular organics can be decomposed into short chain, small organic molecule by anaerobic biochemical treatment, improve the biodegradability of waste water, and can denitrification denitrogenation; Aerobic treatment reduces BOD, COD of waste water further, and is absorbable nitrate or nitrite the mineralized nitrogen in waste water, is back to anaerobism section and carries out denitrification denitrogenation, eliminate the peculiar smell of waste water simultaneously.
5. the microbial flocculant of proper ratio and CaCl
2solution efficiently can be removed biochemical treatment and go out the pollution substances such as underwater micro-organic matter, ammonia nitrogen, SMP, reduces water body chroma and turbidity, makes water outlet qualified discharge or Treated sewage reusing.
6. waste water is by being provided with Pt wire netting and appendix Fe
2o
3or the high chemically inert attapulgite of the physical strength of CuO and NaCl, can effectively decolour, absorption micropollutant, pathogenic microbe killing, improves effluent quality.
The present invention's handle detests the-multiple materialization such as aerobic treatment, microbial flocculation, biochemical method is integrated in one, and formed and efficiently strengthen materialization, biochemical treatment integrated technology, organic pollution materials in sewage can be made thoroughly to be degraded, and water outlet can qualified discharge or cycling and reutilization.
Embodiment
In order to understand the present invention better, the preferred embodiment of the method according to anaerobic-aerobic of the present invention-microbial flocculation intensive treatment waste water is described below in detail.
Embodiment 1
1) first pending laboratory simulation waste water enter equalizing tank, arranges aeration tube and carry out preaeration to pending waste water, and aeration intensity is 160m
3/ (hm
3), adopt poling aeration mode, every root aeration tube is made up of 3 groups of 45 ° of pores, pending waste water is mixed and regulates its pH value to be 6 ~ 8;
2) by the waste water that processes in equalizing tank by grid device, remove the larger floating matter in waste water and impurity;
3) by 2) water outlet pump in fast mixed pond, in fast mixed pond, add flocculation agent PAC carry out flocculation preliminary precipitation, effectively to remove suspended substance in former water and colloidalmaterial, the best feed rate of flocculation agent PAC is 180mg/L, with the speed rapid stirring 5min of 220r/min, then with the speed low rate mixing 15min of 80r/min, stop afterwards stirring and leaving standstill 30min, flocculate precipitate is rationally discharged and supernatant liquor is pumped in internal-circulation anaerobic reactor (IC);
4) in internal-circulation anaerobic reactor (IC), carry out anaerobic biochemical treatment, water body after treatment joins aerobic aeration pond, carries out aerobic treatment;
5) concentration entering in second pond through above-mentioned treated water body microbial flocculant and 5% volume adding 7.5% volume is the CaCl of 1%
2solution, makes liquid be the high-performance modified ceramic filter material of 3 ~ 5mm and the quartz sand thickness be laid on bottom it by particle diameter again after mixing 8min;
6) last, by the water outlet after above-mentioned process by the high chemically inert attapulgite of physical strength, this attapulgite is arranged Pt wire netting, and appendix there is Fe
2o
3or CuO and NaCl, further adsorption bleaching, remove micropollutant, disinfection of effluent, finally enters water in water collecting basin.
Effect before and after process is as shown in table 1.
Table 1
Embodiment 2
1) first pending laboratory simulation waste water enter equalizing tank, arranges aeration tube and carry out preaeration to pending waste water, and aeration intensity is 165m
3/ (hm
3), adopt poling aeration mode, every root aeration tube is made up of 3 groups of 45 ° of pores, pending waste water is mixed and regulates its pH value to be 6 ~ 8;
2) by the waste water that processes in equalizing tank by grid device, remove the larger floating matter in waste water and impurity;
3) by 2) water outlet pump in fast mixed pond, in fast mixed pond, add flocculation agent PAC carry out flocculation preliminary precipitation, effectively to remove suspended substance in former water and colloidalmaterial, the best feed rate of flocculation agent PAC is 185mg/L, with the speed rapid stirring 5min of 220r/min, then with the speed low rate mixing 15min of 80r/min, stop afterwards stirring and leaving standstill 30min, flocculate precipitate is rationally discharged and supernatant liquor is pumped in anaerobe rotating disk (ARBC);
4) in anaerobe rotating disk (ARBC), carry out anaerobic biochemical treatment, water body after treatment join aerobic biological fluid-bed in carry out aerobic treatment;
5) concentration entering in second pond through above-mentioned treated water body microbial flocculant and 5% volume adding 7.5% volume is the CaCl of 1.25%
2solution, makes liquid be the high-performance modified ceramic filter material of 3 ~ 5mm and the quartz sand thickness be laid on bottom it by particle diameter again after mixing 9min;
6) last, by the water outlet after above-mentioned process by the high chemically inert polyurethane foam of physical strength, this polyurethane foam is arranged Pt wire netting, and appendix there is Fe
2o
3or CuO and NaCl, further adsorption bleaching, remove micropollutant, disinfection of effluent, finally enters water in water collecting basin.
Effect before and after process is as shown in table 2.
Table 2
Embodiment 3
1) first pending waste water enter equalizing tank, arranges aeration tube and carry out preaeration to pending waste water, and aeration intensity is 170m
3/ (hm
3), adopt poling aeration mode, every root aeration tube is made up of 3 groups of 45 ° of pores, pending waste water is mixed and regulates its pH value to be 6 ~ 8;
2) by the waste water that processes in equalizing tank by grid device, remove the larger floating matter in waste water and impurity;
3) by 2) water outlet pump in fast mixed pond, in fast mixed pond, add flocculation agent PAC carry out flocculation preliminary precipitation, effectively to remove suspended substance in former water and colloidalmaterial, the best feed rate of flocculation agent PAC is 190mg/L, with the speed rapid stirring 5min of 220r/min, then with the speed low rate mixing 15min of 80r/min, stop afterwards stirring and leaving standstill 30min, flocculate precipitate is rationally discharged and supernatant liquor is pumped in anaerobic baffled reactor (ABR);
4) in anaerobic baffled reactor (ABR), carry out anaerobic biochemical treatment, water body after treatment joins in aerobic biofilter, carries out the aerobic treatment of 10hr at 38 DEG C;
5) last, the concentration entering in second pond microbial flocculant 5% volume adding 7.5% volume through above-mentioned treated water body is the CaCl of 1.5%
2solution, makes liquid be the high-performance modified ceramic filter material of 5mm and the quartz sand thickness be laid on bottom it by particle diameter again, finally enters in water collecting basin by water after mixing 10min;
6) last, by above-mentioned water outlet by the high chemically inert polyurethane foam of physical strength, this polyurethane foam is arranged Pt wire netting, and appendix there is Fe
2o
3or CuO and NaCl, further adsorption bleaching, remove micropollutant, disinfection of effluent, finally enters water in water collecting basin.
Effect before and after wastewater treatment is as shown in table 3.
table 3
Method in above-described embodiment controls all to carry out full automatic control by central processing unit by control circuit, makes whole method of wastewater treatment remain stable, efficient treatment effect.
The invention has the beneficial effects as follows:
1. equalizing tank is provided with aeration tube and carries out preaeration to waste water, both can homogenizing water quality, can ensure that again particulate matter does not deposit in equalizing tank.And regulate the reasonable pH value of pending waste water, be conducive to microbial flocculant and adsorb colloidal solid by electrical counteract, its molecular chain fully stretches simultaneously, is also conducive to bridge linking effect.
2. larger floating matter can be removed by grid device.
3. pre-treatment of flocculating effectively can remove suspended substance in former water and colloidalmaterial.
4. the long-chain in waste water, larger molecular organics can be decomposed into short chain, small organic molecule by anaerobic biochemical treatment, improve the biodegradability of waste water; Aerobic treatment reduces BOD, COD of waste water further, and is absorbable nitrate or nitrite the mineralized nitrogen in waste water, eliminates the peculiar smell of waste water simultaneously.
5. waste water is by being provided with Pt wire netting and appendix Fe
2o
3or the high chemically inert attapulgite of the physical strength of CuO and NaCl, can effectively decolour, absorption micropollutant, pathogenic microbe killing, improves effluent quality.
The present invention is integrated in one multiple to anaerobic-aerobic treatment, microbial flocculation etc. materialization, biochemical method, and formed and efficiently strengthen materialization, biochemical treatment integrated technology, organic pollution materials in sewage can be made thoroughly to be degraded, and water outlet can qualified discharge.
Described herein is that the numerical range related in embodiment is all through many experiments gained, each point can realize, the above, it is only preferred embodiment of the present invention, be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (7)
1., by a method for anaerobic-aerobic-microbial flocculation intensive treatment waste water, it is characterized in that comprising the following steps:
1) first pending waste water enter equalizing tank, arranges aeration tube and carry out preaeration to pending waste water, and aeration intensity is 160 ~ 170m
3/ (hm
2), pending waste water is mixed and regulates its pH value to be 7 ~ 8;
2) waste water after process in equalizing tank is passed through grid device, remove the larger floating matter in waste water and impurity;
3) by 2) water outlet pump in fast mixed pond, in fast mixed pond, add flocculation agent PAC carry out flocculation preliminary precipitation, the best feed rate of flocculation agent PAC is 180 ~ 190mg/L, with the speed rapid stirring 5min of 220r/min, then with the speed low rate mixing 15min of 80r/min, stop afterwards stirring and leaving standstill 30min, flocculate precipitate is rationally discharged and supernatant liquor is pumped in anaerobic biochemical reactor;
4) in anaerobic biochemical reactor, carry out anaerobic biochemical treatment, water body after treatment enters in aerobic biochemical reactor, carries out aerobic treatment;
5) concentration entering in second pond through above-mentioned treated water body microbial flocculant and 5% volume adding 7.5% volume is the CaCl of 1 ~ 1.5%
2solution, makes liquid be the high-performance modified ceramic filter material of 3 ~ 5mm and the quartz sand thickness be laid on bottom it by particle diameter again after mixing 8 ~ 10min;
6) step 5) water outlet introducing attapulgite adsorption tank, further adsorption bleaching, remove micropollutant, disinfection of effluent, described attapulgite adsorption tank is provided with attapulgite, this attapulgite is arranged Pt wire netting, and appendix has Fe
2o
3or CuO and NaCl; Finally water is entered in water collecting basin;
Described microbial flocculant chooses the mixture of rhodococcus erythropolis and Rhodococcus as fermented bacterium, and blending ratio is volume ratio 1: 1:
Substratum is: glucose 10g/L or uronic acid 10g/L, or ethanol 10g/L or sorbyl alcohol 10g/L or N.F,USP MANNITOL 10g/L, ammonium sulfate 0.5g/L, yeast extract paste 2g/L, K
2hPO
42g/L, MgSO
40.5g/L, NaCl0.5g/L, vitamins C 0.1g/L; Culture condition is: pH value 7.0-7.2, cultivates 72-75h for shaking speed 125r/min, 25-26 DEG C; Described microbial flocculant to the flocculating rate of kaolinic suspension higher than 90%.
2. the method for anaerobic-aerobic according to claim 1-microbial flocculation intensive treatment waste water, is characterized in that: step 1) in aeration intensity be 165m
3/ (hm
2).
3. the method for anaerobic-aerobic according to claim 1-microbial flocculation intensive treatment waste water, is characterized in that: step 6) in attapulgite replace with polyurethane foam.
4. the method for anaerobic-aerobic according to claim 1-microbial flocculation intensive treatment waste water, is characterized in that: step 3) and 4) in anaerobic biochemical reactor can adopt CGSB (EGSB) or up flow anaerobic sludge blanket reactor (UASB) or internal-circulation anaerobic reactor (IC).
5. the method for anaerobic-aerobic according to claim 1-microbial flocculation intensive treatment waste water, is characterized in that: step 4) in aerobic biochemical reactor can adopt BAF (BAF) or sbr reactor pond or moving-bed membrane bioreactor (MBBR).
6. the method for anaerobic-aerobic according to claim 1-microbial flocculation intensive treatment waste water, it is characterized in that: step 6) in attapulgite be the attapulgite plate of template, described attapulgite plate with attapulgite, flyash, carbosphere for main raw material, take clay as binding agent, take cement expansive material as swelling agent, the parts by weight of the weighing scale of its each component are: attapulgite 50-70 part, flyash 30-60 part, carbosphere 20-45 part, clay are 5-8 part, cement expansive material is 1-3 part; Template is squeezed into after described said components mixes according to the above ratio.
7. the method for anaerobic-aerobic according to claim 1-microbial flocculation intensive treatment waste water, is characterized in that described step 6) in attapulgite replace with foamed metal, described foamed metal adopts electrochemical plating preparation.
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| CN104193010A (en) * | 2014-08-25 | 2014-12-10 | 闫安男 | Microbial composite flocculant |
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| CN102351380B (en) * | 2011-08-15 | 2012-11-21 | 浙江华建尼龙有限公司 | Method and device for treating caprolactam-containing waste water |
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| CN103663860B (en) * | 2013-10-30 | 2015-04-08 | 郭强 | Treatment method of high-concentration wastewater |
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