Trends of Technology Development through Investigation and Analysis of Domestic Patent Related to Wastewater Treatment Technology including Membrane, Sludge Treatment and Advanced Treatment Technology and Equipment

With shortage of water becoming a major concern in many areas, use of recycled water is a necessity for a growing number of municipalities. This paper describes a case study in which two alternatives were considered for upgrading an existing wastewater treatment plant with the goal of producing recycled water. The first alternative consisted of conventional secondary and tertiary unit processes while the second alternative included the advanced treatment technology of membrane bioreactor (MBR). Also, two alternatives were evaluated for disinfection of recycled water; chlorine gas and UV system. The more advanced treatment technologies (MBR + UV), which produce the higher quality recycled water, resulted in higher cost. The paper discusses the design and project execution approaches as how the more expensive advanced treatment processes were made cost competitive with the conventional treatment processes.

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Combined anaerobic treatment of wastewaters and sludges

Water Science & Technology ◽

10.2166/wst.1999.0019 ◽

1999 ◽

Vol 40 (1) ◽

pp. 85-91 ◽

Cited By ~ 2

Author(s):

Pavel Jeníček ◽

Michal Dohányos ◽

Jana Zábranská

Keyword(s):

Wastewater Treatment ◽

Anaerobic Treatment ◽

Biofilm Reactor ◽

Treatment Efficiency ◽

Specific Design ◽

Treatment Technology ◽

Sludge Treatment ◽

Anaerobic Wastewater Treatment ◽

Anaerobic Pretreatment ◽

High Treatment

One of the most recent and progressive reactor principles used in anaerobic wastewater treatment technology is a vertical compartmentalization, which is used in the USSB (Upflow Staged Sludge Bed) reactor. Thanks to its specific design and features the operation of such a reactor can be very flexible. Examples are given showing tested alternatives of operation with combined wastewater and sludge treatment. A high treatment efficiency and a very low specific sludge production was achieved with the operation of a technological system consisting of a USSB reactor and an aerobic biofilm reactor. In the USSB reactor wastewater and surplus sludge treatment can not only be combined but also anaerobic pretreatment and biological denitrification.

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

Applied Sciences ◽

10.3390/app10217446 ◽

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.

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Sludge management of small water and wastewater treatment plants

Water Science & Technology ◽

10.2166/wst.2004.0797 ◽

2004 ◽

Vol 48 (11-12) ◽

pp. 33-41 ◽

Cited By ~ 5

Author(s):

O. Nowak ◽

V. Kuehn ◽

M. Zessner

Keyword(s):

Wastewater Treatment ◽

Water Treatment ◽

Wastewater Treatment Plants ◽

Advanced Treatment ◽

Economic Pressure ◽

Water And Wastewater Treatment ◽

Sludge Treatment ◽

Small Water ◽

Water Treatment Plants ◽

Water And Wastewater

“Disposal or reuse?” is the big question in respect to sewage and water sludges. This question is even more decisive for small plants, because the achievement of the advanced treatment necessary for disposal is much more difficult in small units than in big ones. The paper discusses this question with main focus on small WWTPs and gives a short overview of the specifics of sludge treatment in small units as well as of outlets for sludge from water treatment plants. In general, small WWTPs do not have a better sludge quality than larger ones, but the economic pressure to realise reuse is higher on them than on large plants.

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The Ecosystem Approach for Improved Sanitation in Specific Urban Areas

KnE Social Sciences ◽

10.18502/kss.v3i21.4971 ◽

2019 ◽

Author(s):

Elis Hastuti ◽

Ida Medawati ◽

Fitrijani Anggraini

Keyword(s):

Wastewater Treatment ◽

Urban Areas ◽

Water Reuse ◽

Technology Development ◽

Ecosystem Approach ◽

Social Constraints ◽

Design Criteria ◽

Processing Unit ◽

Treatment Technology ◽

Improved Sanitation

The acceleration of improved sanitation access in specific urban areas can reduce water-borne diseases and the degradation of water resources. In this paper, the development of technology of wastewater infrastructure in some specific urban regions with an ecosystem approach will be analyzed based on some practical research. The ecosystem approach is analyzed with integrated biophysical and social factors for improved wastewater system; it includes the tidal area, coastal area, and urban water sensitive area. The system of wastewater treatment has certain design criteria to be adapted for specific areas and upgrading the treatment process based on the ecosystem characteristic, community awareness of sanitation and some best practices. The design criteria of wastewater treatment consider the process of environment approach, pollutant transformation target, and the configuration of the processing unit. The option of treatment technology at an individual, communal or settlement scale depends on biophysical factors in each area. This condition can achieve 80-95 % organic removal, 30-70 % nutrient removal by biofilm absorption or phytofiltration. Challenges and social constraints at each selected technology development have an influence on the sustainability of infrastructure in achieving health requirements and the standard of effluent for watercourse or water reuse.

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Experience from 10 Years Advanced Wastewater Treatment – Technology and Results

Water Science & Technology ◽

10.2166/wst.1982.0053 ◽

1982 ◽

Vol 14 (1-2) ◽

pp. 121-133

Author(s):

C Forsberg ◽

B Hawerman ◽

B Hultman

Keyword(s):

Wastewater Treatment ◽

Urban Population ◽

Municipal Wastewater ◽

Wastewater Treatment Plants ◽

Municipal Wastewater Treatment ◽

Treatment Technology ◽

Removal Efficiencies ◽

Municipal Wastewater Treatment Plants ◽

Operational Modes ◽

Polluted Waters

Experience from advanced municipal wastewater treatment plants and recovery of polluted waters are described for the last ten years in Sweden. Except in municipalities with large recipients, the urban population is served by treatment plants with combined biological and chemical treatment. Most of these plants are post-precipitation plants. Several modified operational modes have been developed in order to improve the removal efficiencies of pollutants and to reduce the costs. Results are presented on the recovery of specially investigated lakes with a lowered supply of total phosphorus and organic matter.

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Wastewater treatment and risk assessment in ocean outfall evaluations

Water Science & Technology ◽

10.2166/wst.1998.0416 ◽

1998 ◽

Vol 38 (10) ◽

pp. 309-316

Author(s):

William F. Garber

Keyword(s):

Wastewater Treatment ◽

Los Angeles ◽

Energy Use ◽

Epidemiological Studies ◽

Environmental Risks ◽

Advanced Treatment ◽

Negative Effect ◽

Ocean Outfall ◽

Treatment And Disposal ◽

The City

Past evaluations of the success of wastewater treatment and submarine outfall placement and operation have considered only a limited number of parameters affecting the marine and onshore environments. Important questions regarding the best allocation of available funds have not been adequately addressed. The relative contamination of the sea from airborne and landwash contaminants has not been considered. Neither has the increased air pollution deriving from the energy required for advanced treatment. Similarly, regular epidemiological studies to evaluate actual changes in morbidity arising from drastic changes in treatment and disposal have not been made prior to very large committments of funds. Most importantly, little attention has been given to the relative ranking of all environmental risks within a catchment area. The net result is that, when all factors are considered, the very large expenditures and increased energy use for sanitary wastewater treatment and outfall disposal will have a net negative effect on the physical and societal environment. The City of Los Angeles and the Los Angeles Metropolitan area can be used to illustrate this probability.

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New Biology for Advanced Wastewater Treatment

Water Science & Technology ◽

10.2166/wst.1999.0585 ◽

1999 ◽

Vol 40 (4-5) ◽

pp. 137-144 ◽

Cited By ~ 6

Author(s):

K. Miserez ◽

S. Philips ◽

W. Verstraete

Keyword(s):

Wastewater Treatment ◽

Activated Carbon ◽

Organic Carbon ◽

Genetically Modified Organisms ◽

New Technologies ◽

Chemical Oxidation ◽

Advanced Treatment ◽

Biological Activated Carbon ◽

Catabolic Potential ◽

New Biology

A number of new technologies for the advanced treatment of wastewater have recently been developed. The oxidative cometabolic transformation by methanotrophs and by nitrifiers represent new approaches in relation to organic carbon. The Biological Activated Carbon Oxidative Filters characterized by thin biofilms are also promising in that respect. Moreover, implementing genetically modified organisms with improved catabolic potential in advanced water treatment comes into perspective. For very refractory effluents chemical support techniques, like e.g. strong chemical oxidation, can be lined up with advanced biology.

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