water quality standard
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2021 ◽  
Vol 934 (1) ◽  
pp. 012065
Author(s):  
Y Harjoyudanto ◽  
N Asiah

Abstract Kampar River, Siak River, and Rokan River have different watersheds, and the water from these rivers is not interconnected. The results of this study can be used as a basis for managing aquatic resources in the Kampar River, Siak River, and Rokan River, Riau Province, Indonesia. This research was conducted in April 2017 – March 2018. The collection and measurement of water quality for each river consisted of three stations which were carried out based on SNI through the survey method twice, namely in the dry season and rainy season. The observed water quality parameters include physical, chemical, and biological parameters. The results of the next analysis are calculated using the STORET method using a value system from the United State-Environmental Protection Agency (US-EPA) which is adjusted to the Class III Water Quality Standard based on PP. 22 of 2021. The results of the analysis of the rain index value in the highest dry season is a score of -44 on the Rokan River, classified as class D with a score of -31 heavily polluted. The STORET score in the Kampar River and Siak River obtained -24, each classified as Class C, is included in the moderately polluted category. Meanwhile, in the rainy season the pollution index with the same pattern is highest in the Rokan River -40, then Kampar River, and Siak River each -20. The water quality standard used in this study is class III because it still supports fish farming activities. Based on Government Regulation Number 22 of 2021 concerning water quality standards, class III is water whose designation can be used for freshwater fish aquaculture, animal husbandry, and gardens irrigation. The Storet method is carried out by collecting water quality data and measuring data from each water parameter compared to the value of class III water quality standards.


2021 ◽  
Vol 894 (1) ◽  
pp. 012020
Author(s):  
R A Kusumadewi ◽  
Y Wijayanti ◽  
M Fittkow

Abstract Solar water desalination system is one of the alternatives for supplying fresh water. On the other hand, some people are reluctant to use and rely on water produced by the system. Also, there are other barriers to the adoption of this system in Indonesia. This research aimed to conduct a preliminary study on the performance of solar desalination systems and identify factors that hindered its implementation. The methodology applied in this study consist of two approaches. First, the desalination system performance is determined by the quantity of freshwater produced and the quality of feed water, distilled water, and brine compared to Indonesia’s water quality standard. Second, the identification of implementation barriers was evaluated in the structural analysis method using MICMAC (the Impact Matrix Cross-Reference Multiplication Applied to a Classification) software. The performance analysis result shows low efficiency based on desalinated water produced, which ranges from 2.59% up to 9.67%. The water quality parameters of pH, turbidity, TDS, chloride, Fe, and hardness met the Indonesian water quality standard. The factor of “uncertainty of subsidies,” “niche market,” “poor solar energy data,” and “lack of policy/regulatory framework” were determined as critical barriers which have the most significant influence and highest independence.


2021 ◽  
Vol 12 (1S) ◽  
pp. 184-197
Author(s):  
Abdul Rahim Ibrahim ◽  
Saiful Iskandar Khalit ◽  
Zati Sharip ◽  
Noor Atiqah Badaluddin

Water is the most crucial element for living organisms as a component for survival. Even water has become the habitat for some organisms. Therefore, assessment of water quality is vital to keep water in good condition. This study aimed to determine the water quality of Besut Campus Lake by assessing the physicochemical parameters. Water Quality Index (WQI) is related to the process of determining the status class of water according to beneficial use, with a higher index value indicate good water quality. National Lake Water Quality Standard (NLWQS) was also applied in determining the category of enclosed water systems like ponds and lakes. Water samples were taken from sampling stations at Besut Campus Lake and undergo in – situ and ex–situ analyses involving nine physicochemical parameters. In addition, heavy metal analyses were conducted in the laboratory according to American Public Health Association (APHA) methods. Based on the research conducted, Besut Campus Lake was classified as Class Ⅱ with an index value of 78.23 from the Malaysia Water Quality Index (MWQI), which means recreational activities can be conducted within the lake area involving body contact. Meanwhile, according to National Lake Water Quality Standard (NLWQS), the water category of Besut Campus Lake can be categorised as Category B, which means recreational activities with secondary body contact. Further in-depth analyses involving other microbiological parameters should be carried out before the water can be recommended for primary contact recreation such as swimming.


Author(s):  
Abdulhussain A. Abbas ◽  
Yasameen Tahseen Yousif ◽  
Heider Hamid Almutter

This study aims to evaluate the performance of the sewage treatment plant in Al-Thagher city, in the north of Basrah governorate, the southern part of Iraq. The plant’s performance was estimated based on an analysis of influent and effluent wastewater quality data that represented the monthly averages from Feb. 2017 to Dec. 2018. The results show that the values of temperature (T), pH, ammonia (NH3–N), chemical oxygen demand (COD) and biological oxygen demand (BOD) in all collected samples from the effluent of the plant met the Iraqi water quality standard (IWQS), whereas the values of electrical conductivity (EC), total dissolved solids (TDS), total suspended solids (TSS), sulfate (SO4–2), chloride (Cl–1) and phosphate (PO4–P) met the Iraqi water quality standard (IWQS) in some months and did not meet the standard in other months. The average removal efficiencies were in the following order: COD (77.12%) > BOD (77.03%) > TSS (62.26%) > NH3–N (59.99%) > PO4–P (12.42%) > Cl–1 (1.97%). The removal percentages for the remaining parameters had negative values. The Canadian Council of Ministers of the Environment water quality index (CCME WQI) value of the treated water was 51.80 and classified as “marginal.” The coefficients of determination between each parameter in influent or effluent were calculated. Finally, linear regression equations between these parameters were formulated so that the value of one parameter could be used to predict the value of a different parameter.


2021 ◽  
Vol 16 (2) ◽  
pp. 460-471
Author(s):  
Tusar Kumar Das ◽  
Molla Rahman Shaibur ◽  
Mohammad Mahfuzur Rahman

Koyra (Khulna District) is the coastal Upazila of Bangladesh and is very susceptible to salinity intrusion. The surface and shallow tube well water in the Upazila is naturally saline. The quality of subterranean tube well water in the deliberate area is hardly presented for different Unions of Koyra. Dakshin Bedkashi Union of Koyra is very saline prone. Therefore, the groundwater chemistry of Dakshin Bedkashi Union was determined to legalize if the groundwater is fit for drinking and irrigation or not. Spatially dispersed 30 water samples were collected from the deep aquifer (550 to 700 feet depth) in December, 2016 and analyzed for physico-chemical properties. The outcomes were compared with WHO, USEPA and BBS drinking water quality standard and with FAO standard for irrigation purpose. The pH varied from 6.73 to 8.33, indicating that the water samples were within the WHO drinking water quality standard. The TDS showed a long range variation (230.5 to 2052.0 ppm) with an average of 841.23 ppm, of which 33% of water sources exceeded BBS standard value. The mean value of salinity was 0.65 (±0.43) ppt and EC was 1,400.9 (±904.18) µS cm-1. The loads of key ions were ranked as Na+> Ca2+> Mg2+> K+ and HCO3-> Cl-> SO42-> NO3-> PO4-. The Piper diagram demonstrated that the existing hydro-chemical facies of groundwater were Na+-Cl--HCO3- and Na+-Ca2+-HCO3- type. The Gibbs diagram illustrated that the chemical arrangement of groundwater is mainly misrepresented by rock weathering. Silicate weathering was the profuse process along study area. The Wilcox diagram proved that the greater water sources were allowable to suspicious for irrigation. The core component analysis ensured that rock suspension and sea water intrusion was the primary source of ions in groundwater. The controlling factors of groundwater chemistry were typically related to geologic factors, while the anthropogenic factors have not any momentous effects.


2021 ◽  
Vol 10 (1) ◽  
pp. 022
Author(s):  
Katarina Dwi Yanti

The Kapuas River in Mukok District is a 22-kilometer-long branch of the Kapuas River in West Kalimantan Province. Various activities in Mukok District, Sanggau Regency, contribute to a decrease in the water quality of the Kapuas River. The purpose of this study is to inventory and identify pollution sources, calculate the Pollution Index, determine the potential pollutant load, and calculate the pollutant load capacity. The water quality standard used is class II, as defined by Government Regulation (PP) No. 28 of 2001. According to the findings of the identification and inventory, the sources of pollution on the banks of the Kapuas River in Mukok District, Sanggau Regency, are settlements, livestock, industry, rice fields, and oil palm plantations. The water quality standard of the Kapuas river in Mukok District, Sanggau Regency, based on the class II water quality standard, has exceeded the class II quality standard limit for parameters BOD, COD, DO, and Nitrate. The pollutant originating from oil palm plantations is the source of the potential pollutant load that enters the Kapuas river, Mukok District, Sanggau Regency. Overall, the Kapuas River in Mukok District, District is classified as lightly polluted, with pollution index values ranging from 2,082 to 3,231. The capacity of the pollutant load of the BOD and COD parameters exceeds the capacity, so it can no longer accommodate the load polluter. Meanwhile, the Kapuas River TSS parameter in Mukok District, Sanggau Regency can still handle a pollution load of 6.733.352,358 kg/day.


2021 ◽  
Vol 3 (1) ◽  
pp. 27-31
Author(s):  
Dewi Sartika Siagian ◽  
Wahyu Margi Sidoretno ◽  
Sri Kartini

Ikan Patin bones are a by-product of the fish processing industry which contains the most calcium from the fish body because the main elements of fish bones are calcium, phosphorus and carbonate. Biscuits are snack that have a water quality standard of less than 5% so that they have a crunchy texture. The purpose of this study was to see microbial contamination in biscuits using the ALT (Total Plate Number) method. The results of microbial contamination meet the specified requirements and are included in the category of safe and normal standards according to SNI 2973:2011.


Author(s):  
Desy Rosarina ◽  
Ellysa Kusuma Laksanawati ◽  
Dewi Rosanti

This paper explained heavy metals and chemical properties from the Cisadane River in Tangerang City. A survey method was used to determine the place for sampling the test material. Water measurement is carried out in situ and laboratory tests. Data retrieval was done by purposive sampling determining three observation stations, namely in the Taman Gajah Tunggal park area (station1), Babakan Cikokol residential area (station 2), and Karawaci paper mill area (station 3). The analysis was carried out exactly using analysis. Namely, analysis carried out in the laboratory. The parameters observed were COD, phosphate, DO, BOD, pH. Results of this study informed the water quality in the Cisadane City river did not meet Class II Water Quality Standards based on Government Regulation Number 82, the year 2001. The COD content only meets class II water quality standards at stations 1 and 3. BOD and phosphate content is high and exceeds class II water quality standards. Heavy metal content still meets the water quality standard threshold with a value of Cd less than 0.01 mg/L, Cu less than 0.02 mg/L, Pb less than 0.03mg/L, and Cr less than 0.05mg/L. Zn content exceeds the water quality standard threshold at station three and meets water quality standards at stations 1 and 2 with a value of less than 0.05mg/L.


2021 ◽  
Vol 12 (1) ◽  
pp. 30
Author(s):  
Supardiono SUPARDIONO ◽  
Wayan ARTHANA ◽  
Wayan Sandi ADNYANA ◽  
Wayan Budiarsa SUYASA ◽  
Nyoman SUDIPA

The development of an area must be accompanied by an ever-increasing population growth which will also increase the waste produced. Waste production will put pressure on the environment if it is not managed properly which will eventually end up in water bodies. The increased pollution load is also caused by the habit of people disposing of domestic waste, both liquid waste and solid waste directly into the water. Batujai Reservoir is one of the vital objects for the survival of the people of Central Lombok in particular, and the people of Lombok Island in general. Because of its vital role, the Batujai Reservoir needs to be saved so that the reservoir ecosystem can carry out its functions and benefits in improving the welfare of the people of Central Lombok. There are several community activities that are a source of direct reservoir water pollution (point source) such as fishing activities using floating net cages and disposal of domestic waste by the community which is directly channeled to water bodies. Pollutants collected in the Batujai Reservoir will reduce the water quality of the Batujai Reservoir. This research aims to analyze the water quality of the Batujai Reservoir which is caused by business activities and the community based on Government Regulation Number 82 of 2001 and to determine the water pollution index of the Batujai Reservoir. This study uses a quantitative approach by collecting primary data from direct observations in the field and secondary data based on previous research reports and government reports. The results showed that the average physical parameters were above the water quality standard threshold for class II water quality, the average chemical parameters were above the water quality standard for class III and class IV water quality, while the biological parameters were above the threshold. Water quality limits for class II and class III. The decline in water quality in the Batujai Reservoir is caused by various wastes entering the Batujai Reservoir water bodies. The analysis result with storet system shows that the water quality of Batujai Reservoir is in bad condition or heavily polluted.


Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 327
Author(s):  
Shuaishuai Gao ◽  
Xigang Xing ◽  
Shiming Ding ◽  
Xianfang Fan

Sediment dredging is a common remediation tool for polluted water bodies. However, the long-term effects of dredging on chromium (Cr) contamination remain unclear. This study was conducted to evaluate the long-term effects of sediment dredging on Cr contamination in Lake Taihu, six years after dredging was performed. In this study, high-resolution equilibrium dialysis (HR-Peeper) and diffusive gradients in thin films (DGT) sampling techniques were used for sampling total dissolved Cr and DGT-labile Cr(VI) at the sediment water interface. The results show that the vertical averaged concentrations of total dissolved Cr in summer (112.6 ± 28.8 μg/L) and winter (115.3 ± 29.9 μg/L) in the non-dredged site were above the fisheries water quality standard (AEPC, 2002). They were 38% lower in overlying water and 20% lower in sediment pore water in the dredged site in winter, while in summer the reduction was not evident. The concentration of total dissolved Cr in the dredged site was significantly higher in spring and autumn than those in the non-dredged site, which was probably caused by the large rainfall and river discharge during the two seasons. The vertically averaged concentrations of DGT-labile Cr(VI) in both the non-dredged and dredged sites did not exceed the drinking water quality standard requirements (WHO, 1993). Modeling of DGT-induced fluxes from sediment into overlying water showed a higher response time (Tc) and lower adsorption rate (k1) and desorption rate (k−1) in the dredged site except in summer, indicating that sediment dredging decreased Cr mobility in sediments. Overall, these results confirm that sediment dredging decreased the risk of Cr contamination in winter in Lake Taihu.


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