Research on the Start-Up Effect of Two-Phase Anaerobic Baffled Reactor

2013 ◽  
Vol 448-453 ◽  
pp. 600-603
Author(s):  
Ling Jing ◽  
Xin Xia Wang
Keyword(s):  
Wastewater Treatment ◽  
Ph Value ◽  
Removal Rate ◽  
Limiting Factors ◽  
Small Cities ◽  
Two Phase ◽  
Anaerobic Reactor ◽  
Anaerobic Baffled Reactor ◽  
Low Concentration ◽  
Start Up

Aiming at the fact that the low concentration sewage in small cities, this paper presents Two-phase Anaerobic Baffled Reactor (TAABR) for living wastewater treatment, importantly, it designs and researches Two-phase Anaerobic Baffled Reactor and its advantages, designs a trial project according to the characteristics of the reactor equip. The experiment uses the method that by shortening HRT to raise the load to start and analyses the operating results during startup as follows: 1. 53 days later anaerobic reactor start-up successes.2. When the load is 0.5kgCOD/m3.d, the removal rate of COD is more than 80%. 3. PH value is not the main limiting factors during start up in the reactor and there is basically no danger of excessive acidification.

Research on the Experiment Effect of Two-Phase Anaerobic Baffled Reactor Treatment Craft

2013 ◽  
Vol 781-784 ◽  
pp. 1945-1949
Author(s):  
Ling Jing ◽  
Xin Xia Wang
Keyword(s):  
Wastewater Treatment ◽  
Total Nitrogen ◽  
Experiment Research ◽  
Two Phase ◽  
System Effect ◽  
Anaerobic Reactor ◽  
Anaerobic Baffled Reactor ◽  
Measurement Results ◽  
Successful Launch ◽  
Running Cost

This paper presented Low investment and low running cost Two-phase Anaerobic Baffle Treatment Craft for living wastewater treatment, it designed Two-phase anaerobic reactor and carried out a successful launch and Experiment research. The results are as follows: 1. The experiment uses the start method that by shortening HRT to raise the load, after 53 days completes experiment start.2. By the analysis of HRT to the system effect, suggest that the best HRT is 6 h when the craft processes sewage. 3. The system clean rates of the total nitrogen and total phosphoric are respectively 21.05% and 20.1%.4. The temperature has an influence on clean effect of the system, when the temperature descends from 20 °C to 10 °C, system clean rate of average COD descends from 87.1% to 52.4%. 5. Reactor VFA and PH measurement results express that the craft could circulate stably and efficiently.

Study on Cultivation and Morphology of Granular Sludge in Improved Methanogenic UASB

2012 ◽  
Vol 209-211 ◽  
pp. 1152-1157 ◽  
Author(s):  
Jian Ping Huang ◽  
Li Li Liu ◽  
Yu Min Shao ◽  
Hong Jie Song ◽  
Lian Cheng Wu ◽  
...  
Keyword(s):  
Loading Rate ◽  
Ph Value ◽  
Biogas Production ◽  
Removal Rate ◽  
Granular Sludge ◽  
Maturity Stage ◽  
Two Phase ◽  
Term Operation ◽  
Start Up ◽  
Manual Regulation

Based on the mesophilic two-phase anaerobic reactor for maize ethanol wastewater treatment, the start-up, cultivation and the morphology of mature granular sludge in improved methanogenic UASB were studied. The reactor was initiated at a low loading rate. By means of increasing volume loading rate gradually and regulating internal circulation, the improved methanogenic UASB was operated under an optimal condition. After more than two months of operation, the size for the 63% of total granular sludge was more than 1.3mm, the biogas production rate and COD removal rate achieved 539L/d and 90%, respectively. Start-up of improved methanogenic UASB was accomplished successfully. Improved UASB, served as methanogenic phase of two phase anaerobic process, can adjust pH value of influent automatically. The manual regulation of pH value during start-up could be stopped when the granular sludge in improved methanogenic UASB went into maturity stage. The microfloras of mature methanogenic granular sludge are mainly brevibacterium and filamentous bacteria. Methanothrix soehngenii is the dominant consortium after the long-term operation under low-strength.

Survey of Combined Hydrogen-Methane Production in Anaerobic Baffled Reactor (ABR)

2012 ◽  
Vol 550-553 ◽  
pp. 3180-3183 ◽  
Author(s):  
Guo Chen Zheng ◽  
Jian Zheng Li ◽  
Wei Li ◽  
Zhu Jun Tian ◽  
Shuang Shi Dong ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Phase Separation ◽  
Environmental Pollution ◽  
Methane Production ◽  
Biological Treatment ◽  
Methane Fermentation ◽  
Anaerobic Reactor ◽  
Fermentation System ◽  
Anaerobic Baffled Reactor ◽  
Stage Process

Anaerobic fermentative technology is an important route to solving environmental pollution and resources problems. Combined hydrogen and methane production in a two-stage process is a concept which has been developed in recent years Anaerobic biological treatment organic wastewater can produce large amounts of hydrogen and methane，which can be used as energy carrier. At present，the research focusing on the adjustment of fermentation hydrogen-methane production has been conducted. Furthermore, the simultaneous hydrogen-methane production was tested and optimized. However, it lacked combined hydrogen-methane production in an anaerobic reactor in literature so far. Based on preview experiment, the paper studied the simultaneous hydrogen-methane fermentation in an anaerobic baffled reactor (ABR) system. ABR has the advantage of biomass phase separation and integration of acidogenic and methanogenic processes to simultaneously conduct hydrogen-methane production during wastewater treatment. Through deep biohydrogen production, it can enhance the activity of hydrogen-producing acetogens (HPA) and the efficiencies of the combined hydrogen-methane fermentation system. It showed to enhance the activity of HPA was the key to the combined hydrogen-methane production.

Characteristics of Start-Up Period in Biological Filters with Multiple Compounded Filling for Treating Low Concentration Domestic Sewage

2013 ◽  
Vol 777 ◽  
pp. 206-212
Author(s):  
Lu Ting Pan ◽  
Nai Yuan Zhang ◽  
Kun Wu ◽  
Wen Lei Wang
Keyword(s):  
Electron Microscope ◽  
Treatment Effect ◽  
Biofilm Formation ◽  
Removal Rate ◽  
Biological Membrane ◽  
Ammonia Nitrogen ◽  
Domestic Sewage ◽  
Low Concentration ◽  
Start Up ◽  
Biological Filters

The characteristics of sludge, the start-up and treatment effect of biological filters with multiple compounded filling are studied with low concentration domestic sewage as treating object. Experiment results shows that it spends 25 days to start up biological filters. The removal rate of COD, ammonia nitrogen, total nitrogen (TN) and total phosphorus (TP) are about 90%, 100%, 80% and 90% respectively. Meanwhile, the Biological electron microscope results show that anaerobic biological membrane presents deep black, more filamentous fungi and a small amount of Ciliates, while aerobic biological membrane presents yellow-green, close-grained bacteria micelle, micro-metazoans such as Aspidisca and Vorticella, proving the success of the biofilm formation.

Study on Oil Refining Wastewater Treatment by Membrane Bioreactor with A/O Process

2012 ◽  
Vol 518-523 ◽  
pp. 2854-2857
Author(s):  
Guo De Li ◽  
Na Li ◽  
Shi Wei Wu
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Ph Value ◽  
Removal Rate ◽  
Oil Refining ◽  
Submerged Membrane Bioreactor ◽  
Result Show

In this experimentation an A/O submerged membrane bioreactor was designed to study the treatment of oil-refining wastewater. The result show that the average effluent COD was below 18 mg/L, the removal rate of COD was over 97% and the removal rate was stable; the removal rate of NH4+-N was influenced by PH value, the average effluent NH4+-N was less than 0.97 mg/L and the average removal rate was over 98%; the average effluent oil was below 5mg/L and removal rate was over 96%; effluent phenol was less than 0.12mg/L and the removal rate was nearly 100%.

Optimization of Operating Conditions on Ceramic Printing Wastewater Treatment with Coagulation and Sedimentation Method

2013 ◽  
Vol 664 ◽  
pp. 383-389
Author(s):  
Yong Li Zhang ◽  
Xu Biao Yu ◽  
Chao Hai Wei ◽  
Ling Ling Shang ◽  
Ce Shi
Keyword(s):  
Wastewater Treatment ◽  
Ph Value ◽  
Removal Rate ◽  
Mixing Time ◽  
Operating Conditions ◽  
Intensity Increase ◽  
Sedimentation Method ◽  
Water Ph ◽  
Time Extension ◽  
Stirring Intensity

The ceramic printing wastewater was treated with coagulation sedimentation method by adopted AlCl3 polymerization (PAC) as a coagulant. In order to optimize the wastewater treatment of operating conditions, with absorbance, turbidity and conductivity for testing index, the PAC dosing quantity, stirring time, stirring intensity and influx water pH value on the influence of the wastewater treatment. The results show that the wastewater absorbance and turbidity with PAC dosing quantity increase, mixing time extension and stirring intensity increase present reduced trend, with the water pH increases present first decreases trend of increase; Proper operating conditions of wastewater treatment: PAC dosing quantity 90 mg/L, mixing time 15 min, mixing strength medium speed and influx water pH value is about seven. On this condition, ceramic printing wastewater treatment of effluent decolorization rate reached 86.9%, turbidity removal rate reached 92.5%, conductivity is 2.05 x 103 s/cm.

The Preparation of Chitosan and its Application in the Treatment of Electroplating Wastewater

2014 ◽  
Vol 955-959 ◽  
pp. 2449-2452
Author(s):  
Liu Hui Ru ◽  
Zhong Cai Hua ◽  
Feng Rui Jun
Keyword(s):  
Wastewater Treatment ◽  
Treatment Effect ◽  
Ph Value ◽  
Removal Rate ◽  
Mixing Time ◽  
Copper Ion ◽  
Adsorption Rate ◽  
Influence Of Temperature ◽  
Electroplating Wastewater

In this paper, the chitosan was prepared for treatment of electroplating wastewater. The influence of temperature, PH value, the amount of chitosan and mixing time on the effects of the wastewater treatment was investigated. The result showed that at PH=3, with the addition of 0.6g chitosan and 2h of mixing, the optimum wastewater treatment effect can be obtained. The removal rate of COD is above 80% and the adsorption rate of copper ion is above 99%. The decolourization ratio and the turbidity indicated that the treatment is effective.

Performance of Micro-Polluted Source Water Treatment by Biological Aerated Filter with Lava Media

2014 ◽  
Vol 675-677 ◽  
pp. 968-971
Author(s):  
Bin Wang ◽  
Li Ping Qiu ◽  
Li Xin Zhang ◽  
Kang Xie
Keyword(s):  
Ph Value ◽  
Removal Rate ◽  
Surface Characteristics ◽  
Ammonia Nitrogen ◽  
Source Water ◽  
Biological Aerated Filter ◽  
Start Up ◽  
Operational Temperature ◽  
Promising Treatment ◽  
Aerated Filter

The performance of biological aerated filter (BAF) with lava media for the treatment of micro-polluted source water was investigated with the operational temperature 18°C, the PH value 6.29-8.35, hydraulic retention time (HRT) 30 min as well as dissolved oxygen (DO) 2-3mg/L. The results show that the lava media is a pretty carrier that has promising surface characteristics for microorganism growth and biofilm formation. The biofilter could be operated successfully in 18d, that was shorter than the ceramic and zeolite media filter in the same start-up condition. During the steady operation period, the lava media BAF performed a promising treatment performance of permanganate index, ammonia nitrogen, and turbidity removal, where as the removal rate were 46%, 97% and 62%, respectively. Moreover, the index of UV254, which partly indicates the concentration of hardly degradable substance in the micro-polluted source water, could be removed 23% in the novel media filter.

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