Objective of the study
Nowadays, with the increasing of the population, the environmental waste will increase which cause rising environment waste. One of the main pollutants is the wastewater. Wastewater defined as any form of water that has been used or polluted by domestic, industries, commercial and home process, it must be treated or disposed of. To prevent this problem, the wastewater treatment plant is necessary. Moreover, the wastewater treatment plant forms an important part in daily life due to many things such as reuse the treated water as an option for fresh water for irrigation, it ensures the health by disposal of the traditional treatment plant, reuse the treated water for industrial areas and to give a natural compost, protect the groundwater from pollution that caused by leakage of wastewater into the ground.
This paper discusses the assessment of treated effluent of secondary wastewater treatment plant technologies and its reuse for the current objective in Oman thus, will decrease environmental waste. The aim of this study is to examine the treated effluent wastewater treatment plants quality from different secondary technologies and to demonstrate its compliance with Standards in Sultanate of Oman. The objectives of this study are to ensure the effluent disposal consistently satisfies with the standard required by the Ministry of Environment and Climate Affairs (MECA) and Haya Water for current objective of compliance treated effluents, evaluate the performance of current secondary treatment technologies used for treated effluent disposal and to demonstrate its compliance with regulations and Comparison on efficiency of various techniques in treatment of wastewater for effluent disposal.
In addition, the methodology of this study is Select treatment plants with different secondary treatment processes technologies and locations.
Collect treated effluent samples from different process, location, and time. Test the collected samples for total suspended solid (TSS), pH, turbidity, NH4+ concentration, Na concentration, Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and counts of fecal and total coliforms, electrical conductivity, over a significant period of operation according to Standard Methods for the examination of wastewater. Analysis the results obtained according to MECA and Haya Water standard for effluent disposals. Compare the secondary treatment technologies performance using for current objective of compliance for treated effluent disposal.
First of all, Select treatment plants with different secondary treatment processes technologies and locations in Muscat region then visit it and collecting all the important information from various sources consists of the standard of MECA and Haya water ,the characteristic of quality water. Moreover, Collect treated effluent samples from different process, location, and times to assessment the parameters. Then, Test the collected samples for total suspended solid (TSS), pH, turbidity, NH4+ concentration, some heavy metals, Na concentration, Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and counts of fecal and total coliforms, electrical conductivity, over a significant period of operation according to Standard Methods for the Examination of Wastewater.
Analysis the results obtained according to MECA and Haya Water standard for effluent disposals. After that, compare the secondary treatment technologies performance using for current objective of compliance for treated effluent disposal. The samples will test in the Haya water on the college. The treated effluent will collect from different treatment process of MBR,SBR and CAS.Finally, identify the performance of each of this treatment plant.
pH is a very necessary factor in the chemical and biological wastewater treatment. pH is used to determine the pH values of treated effluent disposal.The instrument to determine the pH value is Digital pH meter. The water is pure or natural when the pH value is equal to 7when the value of pH is less than 7, the water is acidic in nature if the collected sample of treated effluent has ions of hydrogen is more than ions of hydroxyl.
The water is alkaline in nature when pH value is more than 7 if ions of hydroxyl are more than ions of hydrogen. The pH of the water will determine the toxic effects if any of iron, aluminum, ammonia, mercury or other element present in water. For example, ammonia is not present in the well water due to bacteria in the soil convert it to nitrates and present in small waters to some degree.it is soluble in water and if it is high will cause irritant to the respiratory tract.
Digital pH meter is a numeric scale used to indicate the sharpness or basicity (alkalinity) of a fluid arrangement. It is the negative of the logarithm to base 10 of the molar focus, estimated in units of moles per liter, of hydrogen particles. All the more definitely it is the negative of the logarithm to base 10 of the movement of the hydrogen particle. Arrangements with a pH under 7 are acidic and solution with a pH more than 7 is fundamental. Pour water is neutral, being neither an acid nor a base. As opposed to mainstream thinking, the pH esteem can be under 0 or more noteworthy than 14 for exceptionally solid acids and bases individually.
Turbidity is affected by the number of insoluble particles present.The purpose ofturbidity is to determine the turbidity of treated effluent. It is calculated by using the turbidity meter or turbidity rod with optical noticing.Turbidity Caused by major types of suspended solids such as organic materials, silt, and clay.it depends on the focus of present particles in water, accuracy the velocity of water. There are various types of turbidity meter, for example, Bayle’s turbidity meter, Jackson’s turbidity meter,and Nephelo turbidity meter. Turbidity is expressed in “Nephelo Turbidity Unit” (NTU). Mostly, Nephelo turbidity meters are used in the laboratories.