Modelling of Nitrogen and Phosphorus Flow in Wastewater Management: Case Study for Terengganu, Malaysia

2013 ◽  
Vol 295-298 ◽  
pp. 1005-1012
Author(s):  
Nora Aini Ali ◽  
Latifah Ghani ◽  
Noor Zalina Mahmood

The Material Flow Analysis (MFA) method is often discussed in terms of water resources management. This paper attempts to measure and analyze the flow of nitrogen and phosphorus from wastewater sources to assess the trends and patterns of strain in environmental metabolism.Comparison between nitrogen and phosphorus accumulates in wastewater shows that, P discharged values to sewer system are lower as compared to N. Kemaman dan Kuala Terengganu are the dominant region that generating high volume of P and N-wastewater discharge.The study also delved mostly into recycling level of effluent and sludge, with only 3 to 5% of both products were reuse for agriculture and economic purpose. In conclusion, MFA techniques have been proposed to help the decision-makers in waste and nutrient management planning especially on implementing policies related to water and wastewater sectors.

2009 ◽  
Vol 59 (10) ◽  
pp. 1911-1920 ◽  
Author(s):  
F. Meinzinger ◽  
K. Kröger ◽  
R. Otterpohl

Material Flow Analysis is a method that can be used to assess sanitation systems with regard to their environmental impacts. Modelling water and nutrients flows of the urban water, wastewater and waste system can highlight risks for environmental pollution and can help evaluating the potential for linking sanitation with resource recovery and agricultural production. This study presents the results of an analysis of nitrogen and phosphorus flows of Arba Minch town in South Ethiopia. The current situation is modelled and possible scenarios for upgrading the town's sanitation system are assessed. Two different scenarios for nutrient recovery are analysed. Scenario one includes co-composting municipal organic waste with faecal sludge from pit latrines and septic tanks as well as the use of compost in agriculture. The second scenario based on urine-diversion toilets includes application of urine as fertiliser and composting of faecal matter. In order to allow for variations in the rate of adoption, the model can simulate varying degrees of technology implementation. Thus, the impact of a step-wise or successive approach can be illustrated. The results show that significant amounts of plant nutrients can be provided by both options, co-composting and urine diversion.


2015 ◽  
Vol 16 (SE) ◽  
pp. 347-355
Author(s):  
Alireza Mikaeili ◽  
Alireza Ghorbani ◽  
Vahid Babaei Agha Maleki – Poyan Ali ◽  
Abbas Zadeh ◽  
Mahmood Omrani

Transferring and understanding high volume of information and knowledge in organizations are affective internal and external factors. One of the effective internal factors on the knowledge management in organizational activities are divided, organized and coordinated. Organizations have created structures to coordinate factors of doing task and to control acts of members. In this research, structural Equation Method (SEM) is used for examining whether organizational structure dimensions have positive effect on knowledge management in Payame Noor organization in Lorestan province or not. Results of the research showed that there is direct and significant relationship between complexity dimension and knowledge management, formality dimension and knowledge management and centralization dimension and knowledge management. This means that the more complexity, formality and centralization dimensions, the more knowledge management effect in the organization.


Author(s):  
Giovanni Lagioia ◽  
Vera Amicarelli ◽  
Teodoro Gallucci ◽  
Christian Bux

FAO estimates on average more than 1.3 billion tons of food loss and waste (FLW) along the whole food supply chain (equivalent to one-third of total food production) of which more than 670 million tons in developed countries and approximately 630 million tons in developing ones, showing wide differences between countries. In particular, EU data estimates an amount of more than 85 million tons of FLW, equal to approximately 20% of total food production. This research presents two main goals. First, to review the magnitude of FLW at a global and European level and its environmental, social and economic implications. Second, use Material Flow Analysis (MFA) to support and improve FLW management and its application in an Italian potato industry case study. According to the case study presented, MFA has demonstrated the advantages of tracking input and output to prevent FLW and how they provide economic, social, and environmental opportunities.


2008 ◽  
Vol 3 (3) ◽  
pp. 367-374 ◽  
Author(s):  
Heping Huang ◽  
Jun Bi ◽  
Xiangmei Li ◽  
Bing Zhang ◽  
Jie Yang

2012 ◽  
Vol 68 (7) ◽  
pp. III_741-III_749
Author(s):  
Pham Huong GIANG ◽  
Hidenori HARADA ◽  
Shigeo FUJII ◽  
Nguyen Pham Hong LIEN ◽  
Huynh Trung HAI ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document