Anaerobic and Aerobic Submerged Bio-Filter System for Small Scale On-Site Domestic Sewage Treatment

1993 ◽  
Vol 27 (1) ◽  
pp. 51-57 ◽  
Author(s):  
T. Watanabe ◽  
K. Kuniyasu ◽  
H. Ohmori
Keyword(s):  
Water Pollution ◽  
Sewage Treatment ◽  
Domestic Wastewater ◽  
Domestic Sewage ◽  
Small Scale ◽  
Sewerage System ◽  
Black Water ◽  
Treatment Processes ◽  
Gray Water ◽  
Domestic Wastewater Treatment

In order to prevent water pollution and satisfy the demands for flush toilets in regions where a public sewerage system has not been in service, some on-site small scale domestic wastewater treatment processes called GAPPEI JOHKASOU have been developed to treat black water and gray water together in an individual house. Prior to its technical development, the characteristics of wastewater discharged from individual houses should be measured. The possibility of application of anaerobic filter is examined for processing organic wastewater at low concentration like in domestic wastewater, and an anaerobic filteris successfully developed to lengthen the sludge removal interval, since the flow rate of wastewater from individual houses is characterized by a large variation. It is difficult to serve the centralized treatment systems in many regions. Thus, a small GAPPEI JOHKASOU has been developed and propagated for by individual houses in such regions.

Design of Experiment Equipment for Treating Low Temperature Domestic Sewage Using Biological Contact Oxidation Process

2011 ◽  
Vol 71-78 ◽  
pp. 4765-4769
Author(s):  
Ying Li ◽  
Jing Zhou
Keyword(s):  
Low Temperature ◽  
High Latitude ◽  
Oxidation Process ◽  
Sewage Treatment ◽  
Domestic Wastewater ◽  
Domestic Sewage ◽  
Oxidation Method ◽  
Treatment Processes ◽  
Contact Oxidation ◽  
Biological Contact Oxidation

According to the biodegradability of wastewater and better adaptability of biological treatment processes, and advantages of using biological contact oxidation process to treat sewage, biological contact oxidation method was used to study the removal conditions of domestic sewage treatment in high latitude area, and a set of experimental device of biological contact oxidation method applied in treating domestic sewage in low temperature was designed, to solve the serious pollution of domestic wastewater and its higher treatment cost in high latitude area.

The Effect of Simulated Domestic Wastewater Treatment by Biofilm and Biological Filter Processing

2013 ◽  
Vol 395-396 ◽  
pp. 1248-1252
Author(s):  
Xiang Wei Sun ◽  
Shan Quan Jiang ◽  
Yun Cheng Xie
Keyword(s):  
Wastewater Treatment ◽  
Lower Energy ◽  
Removal Rate ◽  
Sewage Treatment ◽  
Domestic Wastewater ◽  
Domestic Sewage ◽  
Organic Loading ◽  
Treatment Efficiency ◽  
Biological Filter ◽  
Domestic Wastewater Treatment

Simulative wastewater was treated by a biofilm with soft filling and biological filter processing, the removal rate of COD /TN/NH4+-N and TP were discussed at different C/N ratio. The combined processing of biofilm and biological filter was studied. The results showed that the removal rate of COD is 80%. Biofilm had highly treatment efficiency and biological filter processing needed lower energy at low organic loading. The combined processing showed that the removal rate of COD and NH4+-N is more than 80% and 65% respectively. It will help for further study of domestic sewage treatment.

Sewage Treatment by UASB-Reactor. Operation Results and Recommendations for Design and Utilization

1992 ◽  
Vol 25 (7) ◽  
pp. 143-157 ◽  
Author(s):  
S. M. M. Vieira ◽  
A. D. Garcia
Keyword(s):  
Wastewater Treatment ◽  
Technology Development ◽  
Sewage Treatment ◽  
Domestic Wastewater ◽  
Uasb Reactor ◽  
First Year ◽  
Second Phase ◽  
Treatment Processes ◽  
Domestic Wastewater Treatment ◽  
Operation Results

A 120 m3 UASB reactor for domestic wastewater treatment was designed and built, based upon results obtained through the operation of a 106 L pilot unit. This system was operated for four years for demonstration and technology development purposes. The results obtained in the first year of operation were already previously presented. After this period, some modifications were carried out aiming at design and operation and maintenance and facilities improvement. This was followed by a continuous 2-year operating period. In this work are presented some of the results obtained in this second phase of operation, with hydraulic retention times ranging from 5 to 15 h, resulting in an effluent with 50 to 150 mg COD.L−1 and 40 to 85 mg BOD.L−1. Some criteria are presented, together with the experience acquired in the development of this technology from the pilot reactor phase. During this period, several lectures and discussions about the system were held in relation to its use, operation and efficiency, leading to considerations about the advantages and convenience of this choice, by establishing a comparison between it and other wastewater treatment processes.

Treatment of Rural Domestic Sewage by Solar Ozonic Ecological Sewage Treatment Plant

2014 ◽  
Vol 955-959 ◽  
pp. 3393-3399 ◽  
Author(s):  
Wei Zheng ◽  
Yan Ming Yang ◽  
Yun Long Li ◽  
Jian Qiu Zheng
Keyword(s):  
Municipal Wastewater ◽  
Operating Cost ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Design Parameters ◽  
Small Scale ◽  
Municipal Wastewater Treatment ◽  
Average Percentage

The process technique and design parameters of project of Solar Ozonic Ecological Sewage Treatment Plant (short for SOESTP) which consists of anaerobic reactor, horizontal subsurface flow (HSSF) constructed wetlands(CWs) and the combination of solar power and ozone disinfection are described, the paper further examines the removal efficiency for treating rural domestic sewage, running expense and recycling ability of product water. The results show that the average percentage removal values of CODcr，BOD5，SS，TN，NH3-N，TP range from 95.6% to 98.0%, 96.0% to 98.7%, 93.1% to 96.1%, 97.0% to 98.9%, 96.9% to 99.5%, 98.2% to 99.6%, respectively, the reduction of fecal coliform (FC) reaches 99.9%, the effluent quality meets the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB18918-2002）. The running cost of SOESTP is 0.063yuan/ m3, saves much more than traditional sewage treatment, and the ozone water obtained from the reservoir will be an ideal choice for disinfection .The system has characteristics of easy manipulation, low operating cost, achieving advanced water, energy conservation and environment protection, is thought to be very suitable for use as the promotion of rural small - scale sewage treatment.

Evaluation of flocculation and dissolved air flotation as an advanced wastewater treatment

2001 ◽  
Vol 43 (8) ◽  
pp. 83-90 ◽  
Author(s):  
A. C. Pinto Filho ◽  
C. C. Brandão
Keyword(s):  
Wastewater Treatment ◽  
Domestic Wastewater ◽  
High Rate ◽  
Advanced Treatment ◽  
Dissolved Air Flotation ◽  
Anaerobic Reactor ◽  
Treatment Processes ◽  
Domestic Wastewater Treatment ◽  
Air Flotation ◽  
Dissolved Air

A bench scale study was carried out in order to evaluate the applicability of dissolved air flotation (DAF) as an advanced treatment for effluents from three different domestic wastewater treatment processes, namely: (i) a tertiary activated sludge plant ; (ii) an upflow sludge blanket anaerobic reactor (UASB); and (iii) a high-rate stabilization pond.

Behaviour of pathogenic E. coli and Salmonella enteritidis in small domestic sewage treatment apparatus (“Johkasou”)

2001 ◽  
Vol 43 (12) ◽  
pp. 191-193 ◽  
Author(s):  
M. Kaneko ◽  
T. Nambu ◽  
M. Tokoro
Keyword(s):  
Water Temperature ◽  
Salmonella Enteritidis ◽  
Sewage Treatment ◽  
Reduction Rate ◽  
Domestic Wastewater ◽  
Domestic Sewage ◽  
E Coli ◽  
Log Reduction ◽  
Sewage System ◽  
Pass Through

“Johkasou” is a small sewage treatment apparatus commonly used in Japan which can effectively treat domestic wastewater in places where a public sewage system is difficult to supply. The behaviour of enterohaemorrhagic E. coli 0157 and Salmonella enteritidis in a “Johkasou” was studied. Their reduction rates depended significantly on the water temperature in the “Johkasou” with minimal decrease in numbers at 10°C within 48 h. The reduction rates increased at 20°C and 30°C where 4 log reduction could be expected. The reduction rates were influenced by the BOD of the solutions that contained the pathogens with the lower the BOD the higher the reduction rate. The reduction rates were about the same between both pathogens. The result showed that it was necessary to disinfect the effluent as some pathogens can pass through the apparatus when some users of the apparatus excrete pathogens.

Vermiculture as a tool for domestic wastewater management

2004 ◽  
Vol 48 (11-12) ◽  
pp. 125-132 ◽  
Author(s):  
O. Bajsa ◽  
J. Nair ◽  
K. Mathew ◽  
G.E. Ho
Keyword(s):  
Waste Management ◽  
Waste Treatment ◽  
Sewage Treatment ◽  
Domestic Wastewater ◽  
Household Waste ◽  
Small Scale ◽  
Wastewater Management ◽  
Waste Products ◽  
End Use ◽  
Urban Waste Management

Organic waste management is a growing issue due to the unsustainable practices of its disposal. Sewage treatment plants are designed to treat wastewater to produce a safe effluent. However, one of the by-products, the sewage sludge which is disposed off in landfill or used as fertilizer in agricultural operation is high in pathogens. Sustainability can be achieved by Vermicomposting of organic matter which involves accelerated cycling of nutrients though a closed cycle whereby waste products are put to productive end use. Vermicomposting and vermifiltration are natural waste management processes relying on the use of worms to convert organic wastes to stable soil enriching compounds. Domestic wastewater management can be accommodated through these processes in a sustainable manner. A considerable reduction in pathogens has been noticed in the end product to a level that it can be safely applied to land. This paper provides an overview of the system characteristics of management systems utilising vermiculture, to manage wastewater. The process can be used in a small scale for household waste treatment to rural or urban waste management.

scholarly journals Sustainable Dewatering of Industrial Sludges in Sludge Treatment Reed Beds: Experiences from Pilot and Full-Scale Studies under Different Climates

2020 ◽  
Vol 10 (21) ◽  
pp. 7446
Author(s):  
Steen Nielsen ◽  
Alexandros I. Stefanakis
Keyword(s):  
Wastewater Treatment ◽  
Domestic Wastewater ◽  
Full Scale ◽  
Small Scale ◽  
Treatment Technology ◽  
Sludge Treatment ◽  
Industrial Sludge ◽  
Reed Beds ◽  
Domestic Wastewater Treatment ◽  
And Performance

Sludge treatment reed beds (STRBs) are an established sludge treatment technology with multiple environmental and economic advantages in dewatering sludge generated during domestic wastewater treatment. However, little is reported regarding their appropriateness and efficiency for the treatment of sludge produced during industrial wastewater treatment and from water works. These sludge types may have significantly different quality characteristics than typical domestic sludge and may contain constituents that could affect their dewaterability. Therefore, the dewatering of these industrial sludge types is usually tested in small-scale pilot STRBs before the construction of full-scale systems. This paper presents and summarizes the state-of-the-art experience from existing pilot and full-scale STRB systems from various countries and climates treating sludge from various industrial sources, evaluates the suitability and the advantages of this sustainable treatment technology, and proposes the required dimensioning for efficient full-scale STRB operation and performance.

Sign in / Sign up

Export Citation Format

Share Document