New concept of contaminant removal from swine wastewater by a biological treatment process

2009 ◽  
Vol 4 (4) ◽  
pp. 402-413 ◽  
Author(s):  
Meixue Chen ◽  
Rong Qi ◽  
Wei An ◽  
Heqing Zhang ◽  
Yuansong Wei ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Treatment Process ◽  
Swine Wastewater ◽  
Contaminant Removal ◽  
Biological Treatment Process

Using Two-Phase Anaerobic Digestion for Organic Waste

2014 ◽  
Vol 953-954 ◽  
pp. 300-303 ◽  
Author(s):  
Fang Yin ◽  
Wu Di Zhang ◽  
Jing Liu ◽  
Hong Yang
Keyword(s):  
Anaerobic Digestion ◽  
Biological Treatment ◽  
Organic Waste ◽  
Single Phase ◽  
Treatment Process ◽  
Maximal Activity ◽  
Two Phase ◽  
High Efficient ◽  
Development Direction ◽  
Biological Treatment Process

The essence of the two phase anaerobic biological treatment process is to place acid bacteria and methane-producing bacteria in two reactors respectively, where it can provide the optimal conditions for their growth and metabolism, allowing them to live up to their maximal activity, which greatly improve processing capacity and efficiency compared to a single-phase anaerobic digestion. The paper start with the two phase anaerobic digestion process, in order to discuss the development direction of high efficient anaerobic digestion system.

The changes of bamboo pulping waste water residuals in biological treatment process

2018 ◽  
Vol 33 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Long Liang ◽  
Ying Qiao Shi ◽  
Guigan Fang ◽  
Aixiang Pan ◽  
Qinwen Tian ◽  
...  
Keyword(s):  
Waste Water ◽  
Biological Treatment ◽  
Treatment Process ◽  
Biological Treatment Process

Development of a Pretreatment Program to Improve Biological Treatability of High Strength and Toxic Industrial Wastewater

1994 ◽  
Vol 29 (9) ◽  
pp. 29-37 ◽  
Author(s):  
A. Brenner ◽  
S. Belkin ◽  
A. Abeliovich
Keyword(s):  
Industrial Wastewater ◽  
Biological Treatment ◽  
Treatment Process ◽  
Control Program ◽  
High Strength ◽  
Small Scale ◽  
Waste Streams ◽  
Wastewater Stream ◽  
Biological Treatability ◽  
Biological Treatment Process

A biological treatment process has been suggested as the main treatment stage for a high (organic) strength industrial wastewater stream, discharged by several chemical industries within a large industrial park. Treatability studies have indicated that the wastes contain a fraction of toxic and non-biodegradable organic matter, which limits the implementation of a conventional biological treatment process for the combined wastewater stream. Therefore, an in-plant control program including waste segregation and process-specific pretreatments is proposed. A protocol that enables selection of waste streams amenable to biological treatment and identification of problematic streams requiring pretreatment is presented and demonstrated. It includes simplified laboratory procedures used for chemical and toxicological characterization of source streams originating in various processes. The results can be used for the development of a pretreatment program for problematic waste streams, based upon local small-scale solutions.

Removal of hydrogen sulfide from an anaerobic biogas using a bio-scrubber

1997 ◽  
Vol 36 (6-7) ◽  
pp. 349-356 ◽  
Author(s):  
Sosuke Nishimura ◽  
Motoyuki Yoda
Keyword(s):  
Hydrogen Sulfide ◽  
Simulation Model ◽  
Biological Treatment ◽  
Gas Flow ◽  
Treatment Process ◽  
Aeration Tank ◽  
Wastewater Treatment Process ◽  
Bubble Tray ◽  
Sulfur Oxidizing ◽  
Biological Treatment Process

A novel biological treatment process for removing hydrogen sulfide from anaerobic biogas using a bio-scrubber has been developed. The treatment process is composed of a gas/liquid contact tower and an aeration tank. The biogas from an anaerobic wastewater treatment process is introduced into a multiple-bubble-tray contact tower (bio-scrubber) and scrubbed with activated sludge liquor from an aeration tank. The sludge liquor containing sulfides is then returned to the aeration tank, where the sulfide is oxidized to sulfate by sulfur-oxidizing bacteria such as Thiobacillus. The contact tower is designed to be air tight in order to prevent air from mixing into the biogas used as a fuel. A simulation model was developed to calculate effluent gas concentrations from the contact tower, incorporating input parameters such as influent hydrogen sulfide concentrations, gas flow rates, and gas/liquid ratios. Using the simulation model, design criteria were calculated and a full-scale plant for treating biogas from a UASB process for potato processing wastewater was constructed. The data shows that the hydrogen sulfide in the biogas was effectively reduced from 2,000 ppm to less than 20 ppm.

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