CN103276023B - Method for promoting anaerobic fermentation of surplus sludge to produce acid by using biosurfactant - Google Patents
Method for promoting anaerobic fermentation of surplus sludge to produce acid by using biosurfactant Download PDFInfo
- Publication number
- CN103276023B CN103276023B CN201310200610.1A CN201310200610A CN103276023B CN 103276023 B CN103276023 B CN 103276023B CN 201310200610 A CN201310200610 A CN 201310200610A CN 103276023 B CN103276023 B CN 103276023B
- Authority
- CN
- China
- Prior art keywords
- excess sludge
- sludge
- anaerobic fermentation
- alkyl polyglycoside
- surfactant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a method for promoting hydrolysis of sludge to produce acid by using a biosurfactant alkyl polyglucoside. The invention aims to solve the problem that the chemical surfactant, which is used in the existing method for promoting anaerobic fermentation of surplus sludge to produce acid by using a chemical surfactant, is toxic and non-biodegradable, and thus, can result in secondary pollution. Secondary sedimentation tank sludge in a sewage treatment plant is used as the raw material to perform anaerobic fermentation under the condition of adding the biosurfactant alkyl polyglucoside. The biosurfactant alkyl polyglucoside used in the method not only has the characteristics in common nonionic and anionic surfactants, but also has the characteristics of high surface activity, favorable ecological safety and high compatibility, and can improve the leaching of organic substances and promote the fermentation of surplus sludge to produce acid. The invention has favorable reference value for practical application and short-chain fatty acid reclamation in the process of sludge hydrolysis to produce acid.
Description
Technical field
The invention belongs to solid waste resource recovery field, be specifically related to a kind of method utilizing bio-surfactant alkyl polyglycoside to promote excess sludge anaerobic fermentation and acid production.
Background technology
Along with further developing of sewage disposal technology, the problem of dealing carefully with of excess sludge causes increasing concern.Because sludge treating method also exists various drawback, nowadays the resource utilization of mud is subject to people and more and more payes attention to.In excess sludge, organic content is about 60%, and biological easily degraded organic constituent is more than 40%, and these biological easily biodegradable organicses are all the nutrition sources that microorganism is enriched.Specific resistance to filtration method comprises anaerobic digestion, aerobic sigestion etc., and anaerobic digestion is considered to one of cost-effective sludge treatment technique.
In recent years, utilize excess sludge anaerobically fermenting methane phase more and more to receive publicity, but relative to biomethanation, the organic acid produced in acidization, not only has higher value, and have a wide range of applications and many potential industrial uses.In addition, in sewage work, acidogenesis of waste activated sludge is utilized directly can be used as the interior carbon source of sewage work microorganism, in order to remove the biological nutrition material (phosphorus and nitrogen) in sewage.Therefore, being optimized excess sludge anaerobic digestion condition, at utmost obtaining organic acid, is an effective way of residual sludge reduction resource utilization.
Hydrolysis stage is considered to the rate-limiting step in anaerobic digestion three stage always, and the ultimate principle improving sludge hydrolytic speed impels the organic substance decomposing of particulate form in mud to be the organism of small molecules solubilised state.Tensio-active agent is a kind of amphoteric substance, and one end of molecule is nonpolar hydrophobic group, and the other end is polar hydrophilic base, and thus surfactant molecule by replacing the high energy body phase molecule at interface, thus can reduce the free energy of system.Add tensio-active agent and can improve sludge hydrolytic speed, for acidogenesis of waste activated sludge provides a large amount of substrate, thus promote the accumulation of short chain fatty acid (SCFAs), finally realize the sludge reduction onsite of excess sludge in sewage work and resource utilization.Tongji University Chen Yin is wide etc. discuss anaerobic condition under utilize chemical surfactant sodium lauryl sulphate (SDS) on the impact of sludge hydrolytic and acidifying, result shows, when SDS dosage is 0.1g/gTSS, SCFAs maximum concentration 2243.04mg/L, and the blank group SCFAs maximum concentration not adding SDS is only 191.10mg/L.But chemical surfactant often exists difficult degradation, easily cause the problem of secondary pollution.Bio-surfactant not only has the various surface propertys that chemical surfactant has, and environmentally friendly, and biodegradability is good, and utilizes bio-surfactant alkyl polyglycoside reinforcement sludge to be hydrolyzed, and promotes that the method that mud produces acid has no report.
Summary of the invention
The object of the invention is to there is toxicity to solve existing chemical surfactant, and not biodegradable problem, and propose to utilize bio-surfactant alkyl polyglycoside to promote the method for excess sludge anaerobic fermentation and acid production.
The technical solution realizing the object of the invention is: a kind of bio-surfactant promotes the method for excess sludge anaerobic fermentation and acid production, have employed alkyl polyglycoside and promotes excess sludge anaerobic fermentation and acid production, specifically comprise the following steps:
(1) excess sludge is added in reaction flask, regulate initial pH value to be 5 ~ 11, add alkyl polyglycoside;
(2), after reaction flask being driven oxygen and filling nitrogen 10min, sealed reaction bottle, constant-temperature shaking culture carries out anaerobically fermenting, completes the process that bio-surfactant alkyl polyglycoside promotes excess sludge anaerobic fermentation and acid production.
Wherein, in step (1), excess sludge takes from secondary sedimentation tank of sewage treatment work, and excess sludge total suspended solid concentration is 24000mg/L ~ 28700mg/L, and volatile solid concentration is 10200mg/L ~ 11400mg/L.
In step (1), the pH value of excess sludge in reaction flask is regulated to select HCl solution or NaOH solution.
In step (1), the dosage of alkyl polyglycoside is 0.05 ~ 0.4g/gTSS(TSS: dewatered sludge quality).
In step (2), leavening temperature is 30 ~ 37 DEG C, and fermentation time is 12 ~ 48h.
The present invention compared with prior art, its remarkable advantage: (1) bio-surfactant alkyl polyglycoside promotes that the alkyl polyglycoside in the method for excess sludge anaerobic fermentation and acid production has the characteristic of conventional nonionic and anion surfactant concurrently, there is high surface, good ecological security and intermiscibility, there is not the problem of secondary pollution.(2) bio-surfactant alkyl polyglycoside energy reinforcement sludge hydrolysis, obviously promotes the organic stripping such as protein and soluble sugar, significantly improves sludge anaerobic fermentation and acid production amount.
Accompanying drawing explanation
Fig. 1 is that in embodiment 1 under different alkyl polyglycoside dosage, acid concentration is with the change of fermentation time;
Fig. 2 be in embodiment 2 pH on the impact of excess sludge anaerobic fermentation and acid production;
Fig. 3 be in embodiment 3 temperature on the impact of excess sludge anaerobic fermentation and acid production.
Embodiment
The following examples can make the present invention of those skilled in the art comprehend.
A kind of method utilizing bio-surfactant alkyl polyglycoside to promote excess sludge anaerobic fermentation and acid production, it is characterized in that utilizing bio-surfactant to reduce surface tension, promote that sludge hydrolytic produces acid, improve excess sludge anaerobic fermentation and acid production amount by control condition, concrete steps:
(1) excess sludge is added in reaction flask, regulate initial pH value to be 5 ~ 11, add 0.05 ~ 0.4g/gTSS alkyl polyglycoside;
(2), after reaction flask being driven oxygen and filling nitrogen 10min, sealed reaction bottle, constant-temperature shaking culture at 30 ~ 37 DEG C, carries out anaerobically fermenting, completes the process that bio-surfactant alkyl polyglycoside promotes excess sludge anaerobic fermentation and acid production after 12 ~ 48h.
Embodiment 1:
In order to determine that bio-surfactant alkyl polyglycoside promotes that sludge hydrolytic produces the top condition of acid, different dosage and fermentation time produce acid impact on sludge hydrolytic is discussed.
(1) getting 100mL excess sludge respectively adds in 6 reaction flasks, excess sludge total suspended solid concentration is 28700mg/L, volatile solid concentration is 11400mg/L, 2-6 bottle adds different amount (0.05 respectively, 0.1,0.2,0.3, alkyl polyglycoside 0.4g/gTSS), arrange headpin is blank group (not adding alkyl polyglycoside) simultaneously.
(2) after reaction flask being driven oxygen and filling nitrogen 10min, sealed reaction bottle, puts into constant-temperature shaking incubator and carries out anaerobically fermenting in 30 DEG C, completes the process that bio-surfactant alkyl polyglycoside promotes excess sludge anaerobic fermentation and acid production after 48h.As seen from Figure 1, in anaerobic fermentation process, SCFAs maximum concentration increases along with the increase of alkyl polyglycoside dosage, and when dosage is 0.4g/gTSS, SCFAs maximum concentration is 2485.3 mg/L, and blank group maximum concentration is only 1609.9 mg/L.
Embodiment 2:
In order to determine that bio-surfactant alkyl polyglycoside promotes that sludge hydrolytic produces the top condition of acid, different pH produces acid impact on sludge hydrolytic is discussed.
(1) getting 100mL excess sludge respectively adds in 8 reaction flasks, excess sludge total suspended solid concentration is 24000mg/L, volatile solid concentration is 10200mg/L, 1-4 bottle adjust ph is divided and is clipped to 5,7,9 and 11, add alkyl polyglycoside 0.2g/gTSS, 5-8 is control group (i.e. adjust ph divide be clipped to 5,7,9 and 11 but do not add alkyl polyglycoside).
(2) after reaction flask being driven oxygen and filling nitrogen 10min, sealed reaction bottle, puts into constant-temperature shaking incubator respectively and carries out anaerobically fermenting in 30 DEG C, completes the process that bio-surfactant alkyl polyglycoside promotes excess sludge anaerobic fermentation and acid production after 12h.As shown in Figure 2, in scope of experiment, pH value is higher, and it is better that sour effect is produced in the hydrolysis of mud under alkyl polyglycoside effect, and under the condition of pH=11, when dosage is 0.4g/gTSS, SCFAs maximum concentration exceeds 156.2mg/L than the experiment of blank group.
Embodiment 3:
In order to determine that bio-surfactant alkyl polyglycoside promotes that sludge hydrolytic produces the top condition of acid, differing temps produces acid impact on sludge hydrolytic is discussed.
(1) getting 100mL excess sludge respectively adds in 6 reaction flasks, and excess sludge total suspended solid concentration is 24000mg/L, and volatile solid concentration is 10200mg/L, adjust ph is 9,1-3 bottle adds alkyl polyglycoside 0.2g/gTSS, and 4-6 is control group, does not add alkyl polyglycoside.
(2) after reaction flask being driven oxygen and filling nitrogen 10min, sealed reaction bottle, put into constant-temperature shaking incubator respectively, No. 1 and No. 4 is carried out anaerobically fermenting in 15 DEG C, No. 2 and No. 5 are in 25 DEG C of anaerobically fermentings, No. 3 and No. 6, in 35 DEG C of anaerobically fermentings, complete the process that bio-surfactant alkyl polyglycoside promotes excess sludge anaerobic fermentation and acid production after 12h.As shown in Figure 3, in scope of experiment, temperature is higher, and it is better that sour effect is produced in the hydrolysis of mud under alkyl polyglycoside effect, and under the condition of T=35 DEG C, when dosage is 0.4g/gTSS, SCFAs maximum concentration exceeds 340.2mg/L than the experiment of blank group.
Claims (5)
1. bio-surfactant promotes a method for excess sludge anaerobic fermentation and acid production, it is characterized in that, have employed alkyl polyglycoside and promotes excess sludge anaerobic fermentation and acid production, specifically comprise the following steps:
(1) excess sludge is added in reaction flask, regulate initial pH value to be 5 ~ 11, add alkyl polyglycoside;
(2), after reaction flask being driven oxygen and filling nitrogen 10min, sealed reaction bottle, constant-temperature shaking culture carries out anaerobically fermenting, completes the process that bio-surfactant alkyl polyglycoside promotes excess sludge anaerobic fermentation and acid production.
2. method according to claim 1, it is characterized in that: in step (1), excess sludge takes from secondary sedimentation tank of sewage treatment work, and excess sludge total suspended solid concentration is 24000mg/L ~ 28700mg/L, and volatile solid concentration is 10200mg/L ~ 11400mg/L.
3. method according to claim 1, is characterized in that: in step (1), regulates the pH value of excess sludge in reaction flask to select HCl solution or NaOH solution.
4. method according to claim 1, is characterized in that: in step (1), and the dosage of alkyl polyglycoside is 0.05 ~ 0.4g/gTSS.
5. method according to claim 1, is characterized in that: in step (2), and leavening temperature is 30 ~ 37 DEG C, and fermentation time is 12 ~ 48h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200610.1A CN103276023B (en) | 2013-05-27 | 2013-05-27 | Method for promoting anaerobic fermentation of surplus sludge to produce acid by using biosurfactant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200610.1A CN103276023B (en) | 2013-05-27 | 2013-05-27 | Method for promoting anaerobic fermentation of surplus sludge to produce acid by using biosurfactant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103276023A CN103276023A (en) | 2013-09-04 |
| CN103276023B true CN103276023B (en) | 2015-01-14 |
Family
ID=49058641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310200610.1A Active CN103276023B (en) | 2013-05-27 | 2013-05-27 | Method for promoting anaerobic fermentation of surplus sludge to produce acid by using biosurfactant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103276023B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020006214A1 (en) * | 2018-06-27 | 2020-01-02 | The Regents Of The University Of California | Sugar-derived stimulant for enhancement of aerobic and anaerobic fermentation performance |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773817B (en) * | 2014-01-10 | 2016-06-15 | 同济大学 | A kind of method utilizing tea saponin to promote excess sludge anaerobic fermentation and acid production |
| CN104099380A (en) * | 2014-06-27 | 2014-10-15 | 同济大学 | Method utilizing sludge anaerobic fermentation to produce fatty acid |
| CN104404090A (en) * | 2014-11-10 | 2015-03-11 | 南京理工大学 | Method for promoting residual sludge to carry out anaerobic fermentation to produce acid |
| AU2015365575A1 (en) * | 2014-12-15 | 2017-07-27 | Global Bioprotect Ip Pty Ltd | Compositions and methods of use |
| CN104743760A (en) * | 2015-03-09 | 2015-07-01 | 同济大学 | Method for synchronously implementing sludge strengthened dewatering and increasing bio-adsorbent yield |
| CN105506003A (en) * | 2016-01-05 | 2016-04-20 | 井冈山大学 | Method for promoting ferment acid production of excess sludge through soapnut saponin production leftovers |
| CN107500499A (en) * | 2016-06-14 | 2017-12-22 | 洛阳华清天木生物科技有限公司 | A kind of method for promoting sludge anaerobic fermentation using biosurfactant |
| CN106801082A (en) * | 2017-02-09 | 2017-06-06 | 广西中烟工业有限责任公司 | A kind of method that utilization tobacco waste produces short chain volatile aliphatic acid |
| JP6817842B2 (en) * | 2017-02-17 | 2021-01-20 | ライオン株式会社 | Biogas production accelerator and biogas production promotion method using it, organic waste treatment method, treatment equipment |
| CN107523592A (en) * | 2017-09-30 | 2017-12-29 | 湘潭大学 | A kind of method and application for promoting excess sludge anaerobic fermentation and acid production using novel green surfactant |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5334286A (en) * | 1993-05-13 | 1994-08-02 | The Procter & Gamble Company | Tissue paper treated with tri-component biodegradable softener composition |
| CN101613640B (en) * | 2009-07-03 | 2011-06-22 | 沈阳师范大学 | Natural surface active agent for cleaning fruits and vegetables and preparation method thereof |
-
2013
- 2013-05-27 CN CN201310200610.1A patent/CN103276023B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020006214A1 (en) * | 2018-06-27 | 2020-01-02 | The Regents Of The University Of California | Sugar-derived stimulant for enhancement of aerobic and anaerobic fermentation performance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103276023A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103276023B (en) | Method for promoting anaerobic fermentation of surplus sludge to produce acid by using biosurfactant | |
| Zhang et al. | Converting nitrogen and phosphorus wastewater into bioenergy using microalgae-bacteria consortia: a critical review | |
| Kadir et al. | Harvesting and pre-treatment of microalgae cultivated in wastewater for biodiesel production: a review | |
| Zhou et al. | Volatile fatty acids accumulation and rhamnolipid generation in situ from waste activated sludge fermentation stimulated by external rhamnolipid addition | |
| Cheng et al. | Improving pollutants removal by microalgae Chlorella PY-ZU1 with 15% CO2 from undiluted anaerobic digestion effluent of food wastes with ozonation pretreatment | |
| CN104404090A (en) | Method for promoting residual sludge to carry out anaerobic fermentation to produce acid | |
| CN103880259B (en) | Utilize calcium peroxide to promote sludge hydrolytic and improve the method for anaerobic sludge digestion effect | |
| CN101157510A (en) | Process for treating antibiotic waste water and usage thereof | |
| Sirohi et al. | Waste mitigation and resource recovery from food industry wastewater employing microalgae-bacterial consortium | |
| CN105110583A (en) | Method for disintegrating residual sludge to raise hydrolytic acidification efficiency by high pressure homogenization technology | |
| CN108265087B (en) | Method for promoting anaerobic fermentation of sludge to produce volatile fatty acid | |
| CN108866115B (en) | Method for efficiently producing volatile fatty acid by using vinasse and sludge in combined anaerobic fermentation manner | |
| Vaithyanathan et al. | Integrated biotechnology management of biosolids: sustainable ways to produce value—added products | |
| CN103757062B (en) | A kind of method utilizing Surfactin to promote excess sludge anaerobic fermentation and acid production | |
| Tawfik et al. | Sustainable microalgal biomass valorization to bioenergy: key challenges and future perspectives | |
| CN103343145A (en) | Method for promoting anaerobic sludge fermentation to produce short-chain fatty acids by utilizing reduced iron powder | |
| CN109680012A (en) | A method of enhancing excess sludge anaerobic fermentation generates hydrogen | |
| Rego et al. | Bioconversion of pretreated sugarcane vinasse into hydrogen: new perspectives to solve one of the greatest issues of the sugarcane biorefinery | |
| Li et al. | Cultivation of phagotrophic algae with waste activated sludge as a fast approach to reclaim waste organics | |
| Almaguer et al. | Combination of advanced oxidation processes and microalgae aiming at recalcitrant wastewater treatment and algal biomass production: a review | |
| CN103224304B (en) | Method for removing nitrogen phosphorus from sludge fermentation liquid to improve organic acid recycling effect | |
| Zhou et al. | A newly isolated microalga Chlamydomonas sp. YC to efficiently remove ammonium nitrogen of rare earth elements wastewater | |
| CN105238843A (en) | Microbial flocculant, preparation method and application thereof | |
| CN112960876A (en) | Method for enhancing sludge cell lysis by exciting nitrite with ferrate | |
| CN108504699B (en) | Method for promoting anaerobic fermentation of excess sludge to produce acid by utilizing APG06 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |