Greywater, a type of wastewater, may be hazardous to human health and ecosystems. Greywater is a large fraction of wastewater that needs adequate attention for remediation and reuse in the agricultural sector so that ...Greywater, a type of wastewater, may be hazardous to human health and ecosystems. Greywater is a large fraction of wastewater that needs adequate attention for remediation and reuse in the agricultural sector so that a part of the water problem can be sorted out. This study aims to develop a rapid method for greywater treatment and reuse in agriculture. A microfilter consisting of sand, clay, organo-clay, charcoal, and biochar was designed and tested for greywater treatments. Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Kjeldahl Nitrogen (TKN), Total Dissolved Salts (TDS), Electric Conductivity (EC), turbidity and pH values were measured before and after using the microfilter. Results showed tremendous removal efficiency of BOD, COD, TKN, by using the developed microfilter. The microfilter was also effective in treating and placing pH, EC and TDS in the acceptable range for suitable agricultural use. Using the treated greywater for irrigation in corn, tomato seedlings showed increased growth compared with the control group (plants irrigated with tap water). This microfilter treatment was economical, safe, easy to handle and easily applicable. These encouraging results suggest the application of this method in many countries for solving the water scarcity problem.展开更多
This study investigated the effect of biogas production on the removal hazardous waste properties. Biogas was produced from caw, chicken and mixed manure. Samples were taken before and after biogas production and test...This study investigated the effect of biogas production on the removal hazardous waste properties. Biogas was produced from caw, chicken and mixed manure. Samples were taken before and after biogas production and tested for removal of total solid (TS), removal of chemical oxygen demand (COD), biological oxygen demand (BOD), and fecal coliform bacteria (FC). Results showed tremendous removal of the above mentioned parameters after biogas production. Chemical analysis of digestate indicates the advantages of using them as plant nutrients. Application of digestate in soil dramatically changed the chemical and physical properties of soil. It can be concluded that biogas production, is not only producing biogas but also removing waste parameters (TS, COD, BOD, FC) and producing plant nutrients.展开更多
文摘Greywater, a type of wastewater, may be hazardous to human health and ecosystems. Greywater is a large fraction of wastewater that needs adequate attention for remediation and reuse in the agricultural sector so that a part of the water problem can be sorted out. This study aims to develop a rapid method for greywater treatment and reuse in agriculture. A microfilter consisting of sand, clay, organo-clay, charcoal, and biochar was designed and tested for greywater treatments. Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Kjeldahl Nitrogen (TKN), Total Dissolved Salts (TDS), Electric Conductivity (EC), turbidity and pH values were measured before and after using the microfilter. Results showed tremendous removal efficiency of BOD, COD, TKN, by using the developed microfilter. The microfilter was also effective in treating and placing pH, EC and TDS in the acceptable range for suitable agricultural use. Using the treated greywater for irrigation in corn, tomato seedlings showed increased growth compared with the control group (plants irrigated with tap water). This microfilter treatment was economical, safe, easy to handle and easily applicable. These encouraging results suggest the application of this method in many countries for solving the water scarcity problem.
文摘This study investigated the effect of biogas production on the removal hazardous waste properties. Biogas was produced from caw, chicken and mixed manure. Samples were taken before and after biogas production and tested for removal of total solid (TS), removal of chemical oxygen demand (COD), biological oxygen demand (BOD), and fecal coliform bacteria (FC). Results showed tremendous removal of the above mentioned parameters after biogas production. Chemical analysis of digestate indicates the advantages of using them as plant nutrients. Application of digestate in soil dramatically changed the chemical and physical properties of soil. It can be concluded that biogas production, is not only producing biogas but also removing waste parameters (TS, COD, BOD, FC) and producing plant nutrients.