Chemical and microbiological properties of Lake Aygır in Turkey and usage of drinking, fisheries, and irrigation

Since water is one of the essentials for life, the presence and quality of water in the habitat is extremely important. Therefore, water quality change and management of Lake Aygır was investigated in this study. For this, water samples collected from the lake and the irrigation pool between May 2015 and May 2016 were analyzed monthly. Spectrophotometric, titrimetric and microbiological methods were used to determine the water quality. According to some water quality regulations, HCO3, NH4, Cu, Mo, Br, fecal coliform and total suspended solid (TSS) values were found above the limit values. The other 29 parameters comply with Turkish national and international legislations. Lake Aygır was negatively affected by the surrounding settlements and agricultural activities. It is thought that the water resource should be monitored periodically and remedial studies should be done to prevent parameters exceeding the limits. However, Lake Aygır was generally suitable for drinking, use, fishing and irrigation.

Effect of Hydraulic Retention Time on the Levels of Biochemical Oxygen Demand and Total Suspended Solid with Simple Integrated Treatment as an Alternative to Meet the Household Needs for Clean Water

BACKGROUND: Domestic wastewater can cause health problems and pollute groundwater sources. Such pollution not only has a negative impact on health and the environment, but also on the cost in providing clean water. AIM: The outcome of domestic wastewater treatment through a proper technique is expected to meet the clean water quality standard for sanitation purposes. MATERIALS AND METHODS: The experiment was conducted to determine the effect of Hydraulic Retention Time (HRT) on the levels of Biochemical Oxygen Demand (BOD) and Total Suspended Solid (TSS) of domestic wastewater. The experiment was carried out with 6 variations of HRT, namely 1 hour, 2 hours, 4 hours, 6 hours and 8 hours with 4 repetitions. The media running process was carried out for 14 days until the reactor condition was in steady state. RESULTS: The results showed that the removal values ​​for COD, Oil and Fat, Ammonia and Total Coliform parameters were 68.03%, 46.51%, 69.64% and 68.99%, respectively. Based on the variation of HRT of 1 hour, 2 hours, 4 hours, 6 hours and 8 hours on the BOD parameter, the removal values ​​obtained were 11.7%, 21.3%, 34.7%, 49.0% and 64.1%, respectively. Furthermore, for the TSS parameter, the values obtained were 17.3%, 25.4%, 30.6%, 42.3% and 50.4%, respectively. CONCLUSION: HRT was proven to have a significant effect on the levels of BOD and TSS of domestic wastewater with a p-value of <0.05 at the 95% confidence level

Efisiensi Penurunan Kadar COD, TSS, dan TDS pada Air Limbah Industri Pangan menggunakan Koagulan Poly Alumunium Chloride dengan metode Jar Test

Industri pangan menghasilkan air limbah berbahan organik dan padatan tersuspensi maupun terlarut yang tinggi. Salah satu proses pengolahan air limbah yaitu dengan proses koagulasi-flokulasi yang bertujuan untuk menghilangkan padatan tersuspensi dan zat organik yang dapat menyebabkan kekeruhan serta bau dengan penambahan koagulan. Penambahan koagulan pada instalasi pengolahan air limbah (IPAL) tidak dilakukan secara kuantitatif, sehingga perlu dilakukan percobaan dengan metode jar test. Tujuan percobaan untuk mengetahui pH dan dosis optimum serta efisiensi koagulan poly aluminium chloride (PAC) untuk menurunkan kadar chemical oxygen demand (COD), total suspended solid (TSS), dan total dissolved solid (TDS). Hasil uji parameter COD, TSS, dan TDS dibandingkan dengan Surat Keputusan Gubernur Tingkat 1 Jawa Barat (SK Gub TK 1 Jabar) No. 6 Tahun 1999 tentang Baku Mutu Limbah Cair Bagi Kegiatan Industri di Jawa Barat. Berdasarkan hasil percobaan diperoleh kondisi optimum koagulan PAC pada pH air limbah 6–7 dengan dosis koagulan optimum pada (80–90) mg/L. Hasil pengujian parameter TS, TDS, TSS, kekeruhan dan COD berturut-turut memberikan nilai efisiensi sebesar (52,6-57,8)%, (53,9-55,5)%, (52,4-58,1)%, (97,8-99,1)%, dan (71,6–77,1)%. Percobaan yang dilakukan membuktikan bahwa koagulan PAC mampu menurunkan kadar pada parameter uji dengan nilai efisiensi yang cukup besar.

KAJIAN KUALITAS AIR LAUT DI PERAIRAN KOTA BONTANG PROVINSI KALIMANTAN TIMUR

Kualitas perairan sangat dipengaruhi oleh aktivitas yang terjadi di sekitar perairan tersebut. Aktivitas perairan yang semakin tinggi lambat laun akan mengakibatkan penurunan kualitas perairan baik secara fisik, kimia maupun biologi yang pada akhirnya akan menurunkan kualitas dan kuantitas sumberdaya pesisir dan laut. Kota Bontang sebagai salah satu daerah di Kalimantan Timur terkenal dengan hasil perikanannya berupa hasil laut dan hasil olahan perikanan, selain itu juga dikenal sebagai kota industri tentunya kegiatan pemantauan lingkungan melalui pengujian kualitas air harus dilakukan. secara teratur. Penelitian ini dilakukan untuk mengetahui status kualitas air laut berdasarkan parameter fisik, kimia dan biologi di perairan Kota Bontang. Pengambilan sampel kualitas air dilakukan pada bulan November 2020 di 6 (enam) stasiun penelitian menggunakan botol niskin dan dianalisis di laboratorium Pusat Penelitian dan Standardisasi Industri Samarinda, kemudian hasilnya dibandingkan dengan baku mutu air laut untuk biota laut berdasarkan Keputusan Menteri Lingkungan Hidup. Nomor 51 Tahun 2004 Hasil penelitian menunjukkan bahwa parameter yang tidak sesuai dengan baku mutu meliputi parameter suhu, pH, Total Suspended Solid (TSS), Amonia, Nitrat, Timbal dan Total Coliform. Parameter yang melebihi baku mutu akan berdampak pada terganggunya fungsi ekologi ekosistem di perairan dan terjadinya penurunan kualitas air laut baik secara fisik, kimia maupun biologi yang berakibat pada penurunan daya guna, hasil guna, produktivitas, daya dukung dan daya tampung sumberdaya perairan sehingga pada akhirnya akan menurunkan kekayaan sumberdaya alam.

Analisa Parameter Fisika dan Kimia Perairan Tihik Tihik Kota Bontang untuk Budidaya Rumput Laut Kapphaphycus alvarezii

Rumput laut merupakan salah satu jenis organisme budidaya yang berpotensi untuk dikembangkan di Kota Bontang. Kapphapycus alvarezii merupakan spesies alga merah penghasil karagenan terbesar dari volume ekspor Indonesia. Tujuan penelitian ini adalah untuk mengetahui kelayakan kualitas air di Perairan Tihik Tihik Kota Bontang berdasarkan aspek fisika dan kimia perairan. Metode penelitian berupa metode observasi. Penelitian ini dilaksanakan pada tanggal 21 April sampai dengan 17 Mei 2021. Lokasi pengambilan sample terbagi atas 5 titik Pengambilan sampel di tiap stasiun dilakukan sebanyak 3 kali. Hasil penelitian memperlihatkan kisaran kualitas air pada perairan tersebut adalah (1) suhu perairan berkisar 29,0-30,1oC; (2) derajat keasaman berkisar 7,5-8,6; (3) oksigen terlarut berkisar 3,65-4,0 ppm; (4) salinitas perairan berkisar 30,0-32,5 psu; (5) kecerahan berkisar 120,5-132,3 cm; (6) kecepatan arus berkisar 0,19-0,25 m/s; (7) kedalaman berkisar 9,10-13 m; (8) nitrat berkisar 0,04-0,05 mg/L; (9) Phosfat berkisar 0,06-0,13 mg/L; (10) total suspended solid berkisar 5-7 mg/L. Berdasarkan hal tersebut dapat diketahui bahwa perairan Tihik Tihik Kota Bontang layak digunakan sebagai lokasi budidaya rumput laut Kapphaphycus alvarezii.

Landsat Image-Based Retrieval and Analysis of Spatiotemporal Variation of Total Suspended Solid Concentration in Jiaozhou Bay, China

The total suspended solid (TSS) concentration (mg/L) is an important parameter of water quality in coastal waters. It is of great significance to monitor the spatiotemporal distribution and variation of TSS as well as its influencing factors. In this study, a quantitative retrieval model of TSS in Jiaozhou Bay (JZB) was established based on Landsat images from 1984 to 2020 (coefficient of determination (R2) = 0.77, root mean square error (RMSE) = 1.82 mg/L). In this paper, first, the long-term spatiotemporal variation of TSSs in JZB is revealed and, next, its influencing factors are further analyzed. The results show that the annual average TSSs in JZB reached their highest level in 1993 and their lowest level in 2016, showing a decreasing trend during the past decades. The TSSs were high in spring and winter and low in summer and autumn. The spatial distribution of the TSSs in JZB was similar at different timepoints, i.e., high in the northwest and gradually decreasing to the southeast. Tidal elevation exerted a significant influence on the daily variation of TSSs, and wind speed had a significant influence on the seasonal variation of TSSs. The Dagu River’s discharge only affected the TSSs at the river mouth. Tidal elevation, river discharge, and wind speed were major influence factors for TSSs’ variation in JZB. The results showed that the empirical model based on Landsat satellite data could be used to effectively monitor the long-term variation of TSSs in JZB.

High Cod and Turbidity Removal in The Treatment of Polluted Pond Water Using Low Dosage of Pineapple Leaf Coagulant: A Preliminary Study

Coagulation process using low dosage of plant-based coagulant to remove high chemical oxygen demand (COD) and turbidity is important for water treatment. This study presents the treatment of pond water using plant-based pineapple leaf coagulant to achieve high COD and turbidity removal. The coagulation was performed using a jar test experiment of pond water at different pH followed by different dosages of pineapple leaf coagulant. It was found that the highest COD and turbidity removal ranged between 94.1 – 94.6 % and 88.3 – 88.4 % at pH 8 respectively, using low dosage (50 mg L-1) of pineapple leaf coagulant. The final COD and turbidity values ranged between 7.3 – 8.0 mg L-1 and 17.7 – 17.8 formazin turbidity unit (FTU) respectively, which are lower compared with results from other studies that used high dosage coagulants. Moreover, the final pH, COD, turbidity, dissolved oxygen (DO), and total suspended solid (TSS) values of the treated pond water were below the standard limits set by the National Water Quality Standards for Malaysia (NWQSM) class IIB, which represents water bodies suitable for recreational use with body contact (DOE, 2016). Therefore, it is expected that the newly-formulated waste utilisation of pineapple leaf coagulant can reduce the usage of chemical coagulants and can further be used for different types of water.

Penanganan Parameter yang Hilang dalam Aplikasi Penilaian Kualitas Air IKA-INA

Kualitas air di suatu wilayah yang merupakan salah satu indikator lingkungan dapat dievaluasi menggunakan parameter fisika, kimia, dan biologi. Indeks Kualitas Air Indonesia (IKA-INA) dapat digunakan untuk menilai kondisi kualitas air secara menyeluruh pada lokasi dan waktu tertentu. IKA-INA dihitung dengan menggunakan sepuluh (10) parameter yaitu pH, Total Dissolved Solid (TDS), Total Suspended Solid (TSS), Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), NO3, NH3, Total Phosphate (TP) dan fecal coliform. IKA-INA tersebut merupakan indeks kualitas air yang dapat memberikan informasi secara sederhana. Dalam pemanfaatannya, tidak semua data parameter dalam IKA-INA tersebut dapat terpenuhi karena adanya data tidak valid atau data yang hilang. Kajian ini bertujuan untuk memberi alternatif rumusan IKA-INA dengan parameter yang tidak lengkap atau jika tidak semua data dalam parameters tersebut tersedia. Metode yang digunakan dalam menyusun rumusan adalah dengan melakukan koreksi faktor bobot parameter IKA-INA terhadap parameter yang hilang dan nilai Q (nilai sub-indeks). Setelah itu dilakukan uji coba pada nilai baku mutu air dalam Peraturan Pemerintah No. 22/2021 Lampiran VI serta pada data kualitas air sungai yang mewakili kualitas baik dan buruk. Hasil uji coba menunjukkan bahwa bobot parameter terkoreksi dapat digunakan untuk penanganan parameter yang hilang dalam penilaian kualitas air dengan metode IKA-INA. Hasil IKA-INA dengan parameter hilang yang menggunakan bobot terkoreksi dan hasil IKA-INA dengan parameter lengkap mayoritas memberikan status IKA yang tidak berbeda, kecuali untuk parameter fecal coli dan parameter yang mempunyai kadar jauh berbeda terhadap kondisi air secara keseluruhan.

Decolourisation of Sewage using Commercial Tannin-Based Coagulant

In this work, the effectiveness of removing colour and total suspended solid (TSS) from complex organic particulate artificial sewage (COPAS) via the coagulation process was studied. Organo-floc (OF), a tannin-based coagulant derived from the plant was used as a coagulant. OF was applied in a jar test experiment at the various dosages at 57 rpm for 5 min, and 30 min sedimentation time to find out the optimum dosage for colour and TSS removal. Zeta potential, pH and conductivity were also analysed. Experiment with tannin dosage of 125 ppm resulted in the highest colour and TSS removal of 94% and 79%, respectively. Organo-floc showed promising results in decolourisation and TSS removal from artificial sewage.