A5000131701- Flood Risk Assessment and Management
- Wastewater Treatment and Nitrogen Removal
- Water resources management and optimization
- Sustainability and Climate Change Governance
- Hydrology and Watershed Management Studies
- Wastewater Treatment and Reuse
- Urban Stormwater Management Solutions
- Water Quality Monitoring and Analysis
- Aquatic and Environmental Studies
- Coastal and Marine Management
- Soil and Water Nutrient Dynamics
- Sustainable Development and Environmental Policy
- Water-Energy-Food Nexus Studies
- Algal biology and biofuel production
- Complex Systems and Decision Making
- Constructed Wetlands for Wastewater Treatment
- Microbial bioremediation and biosurfactants
- Water Quality and Pollution Assessment
- Environmental Science and Water Management
- Phosphorus and nutrient management
- Advanced Power Generation Technologies
- Environmental and Social Impact Assessments
- Water Treatment and Disinfection
- Industrial Engineering and Technologies
- Municipal Solid Waste Management
University of Architecture, Civil Engineering and Geodesy
2010-2024
Gestion de l'Eau, Acteurs, Usages
2011
National Institute of Meteorology and Hydrology
2008
Antibiotic (Bulgaria)
2001
Daniell, K. A., I. White, N. Ferrand, S. Ribarova, P. Coad, J.-E. Rougier, M. Hare, A. Jones, Popova, D. Rollin, Perez, and Burn. 2010. Co-engineering participatory water management processes: theory insights from Australian Bulgarian interventions. Ecology Society 15(4): 11. https://doi.org/10.5751/ES-03567-150411
Abstract Background The management of sludge from municipal wastewater treatment plants (WWTPs) is a global issue, but also an opportunity for circular reuse. Recent data show that reuse in agriculture has the highest share all utilization routes EU. Council Directive 86/278/EEC on spreading agriculture, adopted more than 35 years ago, still relevant, notwithstanding discussion need to update it. Extracting critical, strategic, and precious metals metalloids alternative reuse, which offers...
The objective of this work is to demonstrate that some weaknesses the onsite packaged WWTP associated with high operational costs and energy inefficiency could be overcome by improved management. research methodology consists series batch studies sludge from municipal or WWTP, which simulate different working regimes WWTPs – daily operation, toilet flushing dishwasher machine. A simple classical tool, Oxygen Uptake Rate (OUR) used prove hypothesis regardless specificity WWTPs, namely...
Increasing water consumption, industrial pollution, and long dry periods – these are all resource challenges that highlight the growing importance of transition towards a circular economy for soil-sediment-water system. As described by European Green Deal call, pollution persistent, mobile potentially toxic (PM(T)) substances is often systemic problem. It related to ways production, use, emission chemicals aggravated missing technical solutions monitoring techniques in This poses...
The presented study aims at the development of an approach, which will enable selection optimal measures for mitigation water stress. approach is based on two software pillars – Water Evaluation and Planning System (WEAP) MatLab, are applied in combination. has three main steps: 1) modeling river basin with WEAP 2) selecting preparation intervention curves 3) running optimization using MatLab to select measures. set includes: reducing urban demand supply, irrigation, rehabilitation...
Two modern tools, the System of Economic and Environmental Accounts for Water (SEEAW) Evaluation Planning (WEAP), have been applied in combination to assess a holistic way available water resources socio-economic needs within selected river catchment. The approach is based on integration hydrological information economic data use coherent manner. WEAP model underpins development asset accounts SEEAW platform, thus mitigating some difficulties evaluating parameters that cannot be directly...
Abstract Seven catchments of diverse size in Mediterranean Europe were investigated order to understand the main aspects their hydrological functioning. The methods included analysis daily and monthly precipitation, potential evapotranspiration rates, flow duration curves, rainfall—runoff relationships catchment internal data for smaller more instrumented catchments. results showed that less "dry" than initially considered. Only one them was really semi-arid throughout year. All remaining...
Progress towards climate change aware regional sustainable development is affected by actions at multiple spatial scales and governance levels equally impacts these scales. Many authors policy practitioners consider therefore that decisions over policy, mitigation strategies capacity for adaptation to require construction coordination of arrive acceptable local, global management strategies. However, how such processes decision-aiding can occur be maintained improved time a major challenge...
With multi-stakeholder issues such as climate change or population growth providing significant challenges for water managers, participatory approaches to planning and management are becoming increasingly popular. To aid stress mitigation in Bulgaria's Iskar region, a process with broad range of stakeholders was designed tested. Options adapted the region risk industrial domestic conservation were studied. The results suggest that strong research support is needed adapt theories into...
Algae-based wastewater treatment is a promising technology with various applications for excess biomass such as biofertilizer production or valuable elements extraction. The benefits of the have been discussed larger plants (WWTPs), but use microalgae in decentralized has barely reported. current study screens possible resource recovery potential onsite technology, which adds algae-based post-treatment to conventional biological domestic wastewater. effluent from sequencing batch reactor...
Abstract The recent publication of ISO standard 14045 for eco-efficiency assessment requires a focus on its implementation in variety contexts. gives only general framework; practical scientific approach. This paper demonstrates how the requirements were taken into account an technological improvements to Sofia's urban water system. definition critical elements - product system, system boundary, value and environmental performance is discussed. Methods quantification are proposed. Two types...
Abstract This study aims at improving the existing algal-based wastewater treatment technologies by overcoming some of major drawbacks these systems such as large required land area, culture contamination, and energy-intensive algal harvesting. The experiments were carried out in an open photo-sequencing batch reactor a laboratory-scale for nearly 2 months. A specific strain ACUS00207 aeroterrestrial green microalga Klebsormidium nitens (Kützing) Lokhorst was used. is native to Bulgaria...
Biodegradation of pentachlorophenol (PCP) has been studied in a sequence two completely mixed reactors. Investigation on the first anaerobic sequencing batch reactor (AnSBR) is discussed detail this paper. Key technological and microbiological features were studied: different types adaptation process sludge towards PCP detoxication; influence concentration upon rate biodegradation; minimum retention time for degradation dependence concentration; modeling process; effluent COD SS...
Urban water systems are still in their infancy regarding the transition toward a circular economy, despite sporadic successful examples worldwide. This paper was aimed at analyzing preparedness of four utilities Bulgaria for implementation economy principles and solutions. These provide supply sewerage services to about 30% population Bulgaria. SWOT analysis used as core tool. Publicly available data such nonrevenue water, pressure management, energy demand, network digitalization, sludge...
A one-year study was conducted to evaluate the impact of air pollution and roof coating on runoff quality. An existing 440 sq meter bitumen a single-story building coated with an extensive green layer one half. Rainfall samples from both roofs were collected during 11 rainfall events after separation first flush. The monitored several key parameters, including pH, electrical conductivity (EC), turbidity, chemical oxygen demand (COD), ammonium nitrogen, nitrate phosphates. revealed that types...
This paper describes the results from a study carried out to investigate feasibility of upgrading Parada wastewater treatment plant (WWTP) for biological nitrogen removal. The WWTP is conventional activated sludge process. Since 1992 only one three available aeration tanks has been used. Activated Sludge Model No.1 was used as base modelling system. To accomplish all calculations, AQUASIM software applied. model calibrated and verified with data operation. Very good correlations between...