CN103708626B - The treatment process of a kind of solid-waste anaerobic fermentation natural pond liquid - Google Patents
The treatment process of a kind of solid-waste anaerobic fermentation natural pond liquid Download PDFInfo
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- CN103708626B CN103708626B CN201310729010.4A CN201310729010A CN103708626B CN 103708626 B CN103708626 B CN 103708626B CN 201310729010 A CN201310729010 A CN 201310729010A CN 103708626 B CN103708626 B CN 103708626B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention relates to the treatment process of a kind of solid-waste anaerobic fermentation natural pond liquid, belong to field of environment engineering.The method comprises the following steps: be placed in temperature control incubator with stalk, pig manure and chicken manure for raw material obtains natural pond liquid for culture solution after fermentation, get the bacterial classification that active sludge is cultivated as composite flora, the pH of solution is adjusted to 7-8, be tame 3-5 days under the condition of 25-30 DEG C in temperature, thin up regulates natural pond liquid; When ammonia nitrogen concentration is lower than 10mg/L, it is 7-8 that above-mentioned natural pond liquid is adjusted to pH, is to tame 6-9 days under the condition of 25-30 DEG C in temperature; When ammonia nitrogen concentration is lower than 10mg/L, it is 7-8 that above-mentioned natural pond liquid is adjusted to pH, be use natural pond liquid stoste to screen the composite flora of above-mentioned domestication under the condition of 25-30 DEG C in temperature, taming after 4-6 days makes natural pond liquid Pollutant levels COD be 3500mg/L, TN is 250mg/L, TP is 120mg/L, has screened when culture solution reaches primary standard.
Description
Technical field
The present invention relates to the treatment process of a kind of solid-waste anaerobic fermentation natural pond liquid, belong to field of environment engineering.
Background technology
In recent years, along with the speed of new countryside construction is accelerated, the minimizing of rural area solid waste, innoxious, resource utilization focus on the great attention receiving country and society.Producing methane through anaerobic fermentation is the important process means of rural solid waste, and the biogas produced in production process is not only peasant and provides life energy, and improves the eco-environmental quality in rural area, facilitates the development of rural economy.But anaerobically fermenting also creates high density pollution (high COD, ammonia nitrogen, TN, TP etc.) waste water while generation available energy biogas--natural pond liquid, if deal with improperly it, can increase environmental pressure, produces severe contamination problem.
Traditional waste water treatment process and biological treatment mode is comprised for the treatment process of anaerobically fermenting natural pond liquid in prior art.Traditional waste water treatment process generally adopts biochemical process and physico-chemical process to combine and processes natural pond liquid, treatment effect is better, removal efficiency of nitrogen and phosphorus can reach more than 80%, but the cost of investment of this process is very large, management is more complicated, is not inconsistent with Rural areas expanding economy level.As " the treatment process research up to standard of chicken manure anaerobically fermenting natural pond liquid " (volume the 5th phase in " agricultural mechanical journal " May the 43rd in 2012) of the people such as Wang Feng, in this article, relate to the COD of chicken manure fermenting natural pond liquid
cr280mg/L can be down to, NH4 by 9200mg/L
+-N is down to 36mg/L by 3200mg/L, TP is down to 3.3mg/L by 270mg/L, the method achieves the discharge of wastewater to reach standard, but its " struvite-SBR-coagulation " treatment process complex management adopted, cost is higher, is not suitable for the solid-waste anaerobic fermentation natural pond liquid process of Rural areas.
And the mode of carrying out a biological disposal upon comprises the method for chlorella purification natural pond liquid and micro-algae biological purification method.But these bioremediations are still in the initial stage of laboratory study, successful story is not yet had to report.As " chlorella (Chlorellavulgaris) purifies natural pond liquid and purifying biogas " (volume the 6th phase in " environmental engineering journal " June the 7th in 2013) of the people such as Li Bo, disclose a kind of method utilizing chlorella to process fermentation biogas liquid in this article, the clearance of COD, TN, TP and BOD5 reaches 88.5%, 91.2%, 95.3% and 87.6% respectively.Natural pond liquid treatment effect is better, and cost is low, but chlorella requires relatively low to Pollutant levels, and treatment scale is limited.
High-effective microorganism technology is a kind of novel anaerobism natural pond liquid bioremediation, and high-effective microorganism is composite flora, and being applied to by composite flora in natural pond liquid process engineering is a kind of new approach.
Summary of the invention
The object of the invention is to for above shortcomings in prior art, provide a kind of cost low, simple and convenient management, be applicable to the treatment process of the solid-waste anaerobic fermentation natural pond liquid of high density natural pond liquid waste water.
Above-mentioned purpose of the present invention is achieved through the following technical solutions: the treatment process of a kind of solid-waste anaerobic fermentation natural pond liquid, and the method comprises the following steps:
The adaptive phase of S1, composite flora: with stalk, pig manure and chicken manure for raw material obtains natural pond liquid for culture solution after fermentation, culture solution is placed in temperature control incubator, get the bacterial classification that active sludge is cultivated as composite flora, thin up regulates natural pond liquid, to make Pollutant levels COD be 300-900mg/L, TN be 30-45mg/L, TP is 15-30mg/L, the pH of solution is adjusted to 7-8, is tame under the condition of 25-30 DEG C in temperature;
The domestication of S2, composite flora: when ammonia nitrogen concentration is lower than 10mg/L, by the natural pond liquid thin up in step S1, makes the concentration C OD of pollutent be 1500-2000mg/L, TN is 120-170mg/L, TP is 60-100mg/L, and regulating pH to 7-8, is tame under the condition of 25-30 DEG C in temperature;
The screening of S3, composite flora: when ammonia nitrogen concentration is lower than 10mg/L, it is 7-8 that natural pond liquid in step S2 is adjusted to pH, be under the condition of 25-30 DEG C, use the composite flora process former natural pond liquid obtained through step S2 acclimation and screening in temperature, screened when culture solution reaches primary standard.
Composite flora by ammonifying bacteria, the complexity that forms of the multiple beneficial micropopulation such as nitrifier, denitrifying bacteria, phosphorus bacteria, photosynthetic bacterium and stable microecosystem.The treatment process of solid-waste anaerobic fermentation natural pond of the present invention liquid is that the active sludge with high vital activity is placed in incubator, observe composite flora to nitrogen phosphorus and organic removal effect by the concentration of regulable control natural pond liquid, take progressively to improve pollutant load to screen the composite flora with resisting high-concentration COD, TN, TP.In practical engineering application, because nitrifier is light, is easy to keep afloat, with drainage loss, therefore, in the composite flora process of solid-waste anaerobic fermentation natural pond liquid, adds a small amount of gac and can promote that zoogloea is formed.And when ammonia nitrogen concentration is lower than 10mg/L, illustrate that composite flora has reached stable, can next step be entered.Utilize molecular biological means to check the composition of flora in screening process of the present invention, and repeatedly regulate the formation and the component that change composite flora, finally select desirable composite flora through repeatedly interactive optimization.The treatment process of solid-waste anaerobic fermentation natural pond of the present invention liquid can by COD
cr, the principal pollutant such as TN and TP are down to the primary standard of national town sewage discharge, for anaerobic fermentation technology provides important bracing force.
In the treatment process of above-mentioned solid-waste anaerobic fermentation natural pond liquid, the activated sludge concentration described in step S1, S2 is 20-25mg/L.Described active sludge, preferably from sewage work, can reach the active sludge of more than 80% to the removal of the pollutents such as COD, TN, TP.
In the treatment process of above-mentioned solid-waste anaerobic fermentation natural pond liquid, the domestication time of the adaptive phase of composite flora described in step S1 is 3-5 days.
In the treatment process of above-mentioned solid-waste anaerobic fermentation natural pond liquid, the domestication time of the domestication of composite flora described in step S2 is 6-9 days.The treatment process of solid-waste anaerobic fermentation natural pond of the present invention liquid takes the mode hocketed to improve the concentration of domestication solution step by step, as preferably, looks zoogleic formational situation in step s 2, adds proper amount of methanol or glucose adjustment carbon source.
In the treatment process of above-mentioned solid-waste anaerobic fermentation natural pond liquid, the domestication time of the screening of composite flora described in step S3 is 4-6 days.
In the treatment process of above-mentioned solid-waste anaerobic fermentation natural pond liquid, use hydrochloric acid and sodium hydroxide that the pH of solution is adjusted to 7-8.
Compared with prior art, tool of the present invention has the following advantages: the composite flora in the treatment process of solid-waste anaerobic fermentation natural pond of the present invention liquid is by ammonifying bacteria, nitrifier, denitrifying bacteria, phosphorus bacteria, the complexity of the multiple beneficial micropopulation such as photosynthetic bacterium composition and stable microecosystem, it is high that the treatment process of solid-waste anaerobic fermentation natural pond of the present invention liquid overcomes prior art cost, the shortcoming of complex management, that a kind of cost is low, simple and convenient management, be applicable to the treatment process of concentration natural pond liquid waste water, there is good marketing, have very important significance to improving China's Ecological Environment.
Specific embodiment
Be below specific embodiments of the invention, technical scheme of the present invention is further described, but the present invention is not limited to these embodiments.
Embodiment 1
The adaptive phase of composite flora: with stalk, pig manure and chicken manure for raw material obtains natural pond liquid for culture solution after fermentation, culture solution is placed in temperature control incubator, getting concentration is the bacterial classification that the active sludge of 22mg/L is cultivated as composite flora, thin up regulates natural pond liquid, to make Pollutant levels COD be 600mg/L, TN be 40mg/L, TP is 20mg/L, with hydrochloric acid and sodium hydroxide, the pH of solution being adjusted to 7, is tame 4 days under the condition of 28 DEG C in temperature;
The domestication of composite flora: when ammonia nitrogen concentration is lower than 10mg/L, by above-mentioned natural pond liquid thin up, to make the concentration C OD of pollutent be 1800mg/L, TN be 150mg/L, TP is 80mg/L, regulates pH to 7, is to tame 5 days under the condition of 28 DEG C in temperature;
The screening of composite flora: when ammonia nitrogen concentration is lower than 10mg/L, it is 7 that above-mentioned natural pond liquid is adjusted to pH, be use under the condition of 28 DEG C within 5 days, to screen the composite flora process former natural pond liquid obtained through above-mentioned domestication in temperature, natural pond liquid Pollutant levels COD is made to be 3500mg/L, TN is 250mg/L, TP is 120mg/L, has screened when culture solution reaches primary standard.
Embodiment 2
The adaptive phase of composite flora: with stalk, pig manure and chicken manure for raw material obtains natural pond liquid for culture solution after fermentation, culture solution is placed in temperature control incubator, getting concentration is the bacterial classification that the active sludge of 20mg/L is cultivated as composite flora, thin up regulates natural pond liquid, to make Pollutant levels COD be 300mg/L, TN be 30mg/L, TP is 15mg/L, with hydrochloric acid and sodium hydroxide, the pH of solution being adjusted to 7, is tame 3 days under the condition of 25 DEG C in temperature;
The domestication of composite flora: when ammonia nitrogen concentration is lower than 10mg/L, by above-mentioned natural pond liquid thin up, to make the concentration C OD of pollutent be 1500mg/L, TN be 120mg/L, TP is 60mg/L, regulates pH to 7, is to tame 6 days under the condition of 25 DEG C in temperature;
The screening of composite flora: when ammonia nitrogen concentration is lower than 10mg/L, it is 7 that above-mentioned natural pond liquid is adjusted to pH, be use under the condition of 25 DEG C within 4 days, to screen the composite flora process former natural pond liquid obtained through above-mentioned domestication in temperature, natural pond liquid Pollutant levels COD is made to be 3500mg/L, TN is 250mg/L, TP is 120mg/L, has screened when culture solution reaches primary standard.
Embodiment 3
The adaptive phase of composite flora: with stalk, pig manure and chicken manure for raw material obtains natural pond liquid for culture solution after fermentation, culture solution is placed in temperature control incubator, getting concentration is the bacterial classification that the active sludge of 25mg/L is cultivated as composite flora, thin up regulates natural pond liquid, to make Pollutant levels COD be 900mg/L, TN be 45mg/L, TP is 30mg/L, with hydrochloric acid and sodium hydroxide, the pH of solution being adjusted to 8, is tame 5 days under the condition of 30 DEG C in temperature;
The domestication of composite flora: when ammonia nitrogen concentration is lower than 10mg/L, by above-mentioned natural pond liquid thin up, to make the concentration C OD of pollutent be 2000mg/L, TN be 170mg/L, TP is 100mg/L, regulates pH to 8, is to tame 9 days under the condition of 30 DEG C in temperature;
The screening of composite flora: when ammonia nitrogen concentration is lower than 10mg/L, it is 8 that above-mentioned natural pond liquid is adjusted to pH, be use under the condition of 30 DEG C within 6 days, to screen the composite flora process former natural pond liquid obtained through above-mentioned domestication in temperature, natural pond liquid Pollutant levels COD is made to be 3500mg/L, TN is 250mg/L, TP is 120mg/L, has screened when culture solution reaches primary standard.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although made a detailed description the present invention and quoted some specific embodiments as proof, to those skilled in the art, only otherwise it is obvious for leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (3)
1. a treatment process for solid-waste anaerobic fermentation natural pond liquid, is characterized in that, the method comprises the following steps:
The adaptive phase of S1, composite flora: with stalk, pig manure and chicken manure for raw material obtains natural pond liquid for culture solution after fermentation, culture solution is placed in temperature control incubator, get the bacterial classification that active sludge is cultivated as composite flora, thin up regulates natural pond liquid, and making Pollutant levels COD be 300-900mg/L, TN is 30-45mg/L, TP is 15-30mg/L, the pH of solution is adjusted to 7-8, and be tame under the condition of 25-30 DEG C in temperature, the domestication time of the adaptive phase of described composite flora is 3-5 days;
The domestication of S2, composite flora: when ammonia nitrogen concentration is lower than 10mg/L, by the natural pond liquid thin up in step S1, the concentration C OD of pollutent is made to be 1500-2000mg/L, TN is 120-170mg/L, TP is 60-100mg/L, regulate pH to 7-8, be tame under the condition of 25-30 DEG C in temperature, the domestication time of the domestication of described composite flora is 6-9 days;
The screening of S3, composite flora: when ammonia nitrogen concentration is lower than 10mg/L, it is 7-8 that natural pond liquid in step S2 is adjusted to pH, be under the condition of 25-30 DEG C, use the composite flora process former natural pond liquid obtained through step S2 acclimation and screening in temperature, screened when culture solution reaches primary standard, the domestication time of the screening of described composite flora is 4-6 days.
2. the treatment process of solid-waste anaerobic fermentation natural pond according to claim 1 liquid, is characterized in that, the activated sludge concentration described in step S1, S2 is 20-25mg/L.
3. the treatment process of solid-waste anaerobic fermentation natural pond according to claim 1 liquid, is characterized in that, uses hydrochloric acid and sodium hydroxide that the pH of solution is adjusted to 7-8.
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| CN105063096A (en) * | 2015-09-14 | 2015-11-18 | 黑龙江中科瑞合环保技术服务有限公司 | Method for quickly producing methane through anaerobic fermentation of kitchen waste at normal temperature |
| CN105384534B (en) * | 2015-12-15 | 2019-04-12 | 山水环境科技股份有限公司 | A kind of liquid organic biofertilizer and preparation method thereof |
| CN106865750A (en) * | 2017-01-18 | 2017-06-20 | 常州大学 | A kind of activated sludge culture and acclimation method for difficult for biological degradation organic wastewater biological treatment |
| CN110016447B (en) * | 2019-04-22 | 2021-07-13 | 刘坚 | Method for extracting strains by using pig manure |
| CN111675348B (en) * | 2020-06-02 | 2023-09-29 | 齐鲁工业大学 | Method for efficiently repairing aquaculture tail water by utilizing photosynthetic bacteria |
| CN114394673B (en) * | 2021-11-28 | 2024-02-02 | 江苏宜裕环保科技有限公司 | Biological fermentation pretreatment method for high-concentration organic wastewater and application thereof |
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| CN102849857A (en) * | 2012-04-10 | 2013-01-02 | 南京大学 | Method for treating high-salinity high-concentration ammonia-nitrogen wastewater |
| CN102925494A (en) * | 2012-11-22 | 2013-02-13 | 苏州市吴江区农业环境监测站 | Method for producing methane by dry fermentation of beast and bird wastes and crop straws |
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| CN102849857A (en) * | 2012-04-10 | 2013-01-02 | 南京大学 | Method for treating high-salinity high-concentration ammonia-nitrogen wastewater |
| CN102925494A (en) * | 2012-11-22 | 2013-02-13 | 苏州市吴江区农业环境监测站 | Method for producing methane by dry fermentation of beast and bird wastes and crop straws |
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