Cost optimisation and minimisation of the environmental impact through life cycle analysis of the waste water treatment plant of Bree (Belgium)

2011 ◽  
Vol 63 (1) ◽  
pp. 164-170 ◽  
Author(s):  
K. De Gussem ◽  
T. Wambecq ◽  
J. Roels ◽  
A. Fenu ◽  
G. De Gueldre ◽  
...  
Keyword(s):  
Waste Water ◽  
Life Cycle ◽  
Environmental Impact ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Full Scale ◽  
Waste Water Treatment Plant ◽  
Aeration Tank ◽  
Environmental Footprint ◽  
Recirculation Flow

An ASM2da model of the full-scale waste water plant of Bree (Belgium) has been made. It showed very good correlation with reference operational data. This basic model has been extended to include an accurate calculation of environmental footprint and operational costs (energy consumption, dosing of chemicals and sludge treatment). Two optimisation strategies were compared: lowest cost meeting the effluent consent versus lowest environmental footprint. Six optimisation scenarios have been studied, namely (i) implementation of an online control system based on ammonium and nitrate sensors, (ii) implementation of a control on MLSS concentration, (iii) evaluation of internal recirculation flow, (iv) oxygen set point, (v) installation of mixing in the aeration tank, and (vi) evaluation of nitrate setpoint for post denitrification. Both an environmental impact or Life Cycle Assessment (LCA) based approach for optimisation are able to significantly lower the cost and environmental footprint. However, the LCA approach has some advantages over cost minimisation of an existing full-scale plant. LCA tends to chose control settings that are more logic: it results in a safer operation of the plant with less risks regarding the consents. It results in a better effluent at a slightly increased cost.

The sharon process: an innovative method for nitrogen removal from ammonium-rich waste water

1998 ◽  
Vol 37 (9) ◽  
pp. 135-142 ◽  
Author(s):  
C. Hellinga ◽  
A. A. J. C. Schellen ◽  
J. W. Mulder ◽  
M. C. M. van Loosdrecht ◽  
J. J. Heijnen
Keyword(s):  
Waste Water ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Ammonia Removal ◽  
Full Scale ◽  
Waste Water Treatment Plant ◽  
University Of Technology ◽  
In The Beginning ◽  
Sharon Process

A new biological process for ammonia removal from flows containing hundreds to thousands milligrams NH+4 per litre has been developed at the Delft University of Technology. The SHARON process operates at a high temperature (30–40 °C) and pH (7–8). The process is performed without sludge retention. This enables the prevention of nitrite oxidation, leading to lower operational costs. Denitrification is used to control the pH. A full scale plant was designed (1500 m3) based on kinetic and stoichiometric parameters determined at 1.5 1. scale and model predictions. Total costs are estimated at about $1.7 per kg removed NH4+-N. The first full scale SHARON plant will be operational at the Dokhaven waste water treatment plant in Rotterdam in the beginning of 1998. This contribution focuses on the principles of the process and evaluates conditions for which application seems feasible.

Implementation of Life Cycle Assessment Method (LCA) and Analytical Hierarchy Process (AHP) to Determine the Development of Recycling Unit of Waste Water in Grati CCPP PT Indonesia Power up Perak Grati

2018 ◽  
Vol 874 ◽  
pp. 18-26
Author(s):  
Mila Tartiarini ◽  
Udisubakti Ciptomulyono
Keyword(s):  
Waste Water ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Power Plant ◽  
Power Plants ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Service Water ◽  
The Impact

Waste water result from operating activities of Grati Combined Cycled Power Plant (CCPP) is significant amount and has potentially to be reutilized. A recycling unit as the pilot project has been applied in Grati CCPP PT Indonesia Power UP Perak Grati for capacity 4 tons/hour of service water product. Development plant of Grati CCPP up to year 2018 will produce more amounts of waste water, and potentially increase the pollution load in the unit area.Considering the use of alternative development for unit recycled waste water effluent from the Waste Water Treatment Plant (WWTP) has implications to the environmental and cost aspects, therefore a proper assessment to decide the alternative is needed. Proposed method of Life Cycle Assessment (LCA) is to measure the impact to the environment. And the Cost Benefit Analysis (CBA) is to measure the economic criteria. To integrate the results of the two methods, it is used and calculated by using Hierarcy Analytical Process (AHP).The result of the study about the environmental impact and economic analysis, the development of the recycling unit is required to process all waste water produced by power plants. Focus group by experts in power plant operation using AHP is based on the results of SimaPro 7.0 and CBA. The most beneficial result is with a single score of 0.2314 Pt / 1 ton of water service, the payback period of 2.5 years, 37.5% IRR and NPV US$ 88,577.23 and the MMF-RO unit for total capacity of 14 tons/hour has become the most alternative of development.

Dynamic simulations of waste water treatment plant operation

2011 ◽  
Vol 65 (6) ◽  
Author(s):  
Ján Derco ◽  
Lenka Černochová ◽  
Ľubomír Krcho ◽  
Antonio Lalai
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Slovak Republic ◽  
Water Discharge ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Operational Parameters ◽  
Recirculation Flow

AbstractActivated Sludge Model No. 1 (ASM1) was used to model the biological stage of an actual waste water treatment plant (WWTP). Some possibilities for the utilisation of simulation programs for WWTP operation are presented. Simulation calculations were performed taking the conditions of WWTP in Nové Zámky, the Slovak Republic, into consideration, where measurements of the diurnal variations in waste water flow and composition at the inlet and outlet were carried out. A calibrated model predicting the influence of changes in the waste water composition and the operational parameters on the effluent waste water quality and related operational costs is available. Values of the operational parameters (solids retention time, internal recirculation flow, dissolved oxygen concentration) for effective operation (effluent concentration values, oxygen consumption, charges, i.e. charges for waste water discharge into the recipient water body) of the WWTP were obtained by simulations. The presented results are for illustration purposes only and are not intended as instructions for the operation of a waste water treatment plant. They correspond to the calibrated mathematical model ASM 1 based on the results of experimental measurements and operational data, as well as on the technical and monitoring level of the WWTP.

Adaption of the main waste water treatment plant in Vienna to meet Austrian emission regulations

1996 ◽  
Vol 33 (12) ◽  
pp. 65-72
Author(s):  
Harald Kainz ◽  
Herbert Hofstetter
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Optimal Solution ◽  
Evaluation Process ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Aeration Tank ◽  
Emission Regulations

The modification of the main waste water treatment plant in Vienna will take place in accordance with the minimum efficiences laid down in the emission regulations as issued in 1991 by the Austrian Federal Office for Agriculture and Forestry. To meet these figures it is necessary to adapt the plant by 2001. The studies on several variants and the evaluation process showed a 2-step technology with partial by-passing of the 1st step to be the optimal solution. For this flexible system a new aeration tank volume of only 210,000 m3 is sufficient. Test-runs with a semi-commercial plant confirmed the correctness of all calculations. Possibilities for further modifications have been considered, e.g. dimensioning of all relevant hydraulic installations up to 24 m3/sec, final purification by sand or flocculant filtration and spare areas for measures after 2015.

Pilot-testing, design and full-scale experience of a sequencing batch reactor system for the treatment of the potentially toxic waste water from a road and rail car cleaning site

1997 ◽  
Vol 35 (1) ◽  
pp. 259-267 ◽  
Author(s):  
A. G. Zilverentant
Keyword(s):  
Waste Water ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Full Scale ◽  
Appropriate Technology ◽  
Toxic Waste ◽  
Waste Water Treatment Plant ◽  
Treatment Technique

A cleaning site for road and rail car tankers emits a waste water stream of 200-250 m3/d. The waste water was originally treated in a physico-chemical waste water treatment plant. It was required to improve the effluent quality in order to meet the future discharge limits. As a possible treatment technique the sequencing batch reactor (SBR) technology, with an option for powdered activated carbon (PAC) dosing, was selected. Waste water originating from road and rail car cleaning installations is known to be potentially toxic/inhibitory. As a first step in the design procedure a pilot test was run for a period of 8 months. This pilot showed the SBR to be an appropriate technology for the treatment of the waste water. The PAC option was not feasible. Based on the pilot results a full scale installation, comprising a batch reactor with a diameter of 10.4 m and a maximum water depth of 17.3 m, was designed and successfully started up. This paper presents the highlights of the total project.

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