scholarly journals Produksi Bersih Pengolahan Limbah Cair Menggunakan Decanter pada PT Aetra Air Jakarta

2021 ◽  
Vol 22 (2) ◽  
pp. 206-214
Author(s):  
Tatan Sukwika ◽  
Said Azmi Muhammad
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Treatment Process ◽  
Service Providers ◽  
Water Removal ◽  
Clean Water ◽  
Inflow Rate ◽  
Drying Time ◽  
Zero Waste ◽  
Sludge Drying

ABSTRACT Clean water process production by PT Aetra Air Jakarta (AAJ) emits a lot of wastewater. All this time, a sludge drying bed is used for its production activities, where the sludge produced is not proportional to the area and length of drying time, so the unsatisfied sludge is eventually dumped into the water body. In line with the need to improve the quality of operational activities, clean water service providers are trying to create zero waste. They are environmentally friendly through the use of a decanter. The research objective was to determine the amount of sludge treated in the wastewater treatment process and measure water removal efficiency in sludge using a decanter. Methods of data collection through observation and testing of wastewater treatment using a decanter. The decanter treatment process starts from taking the sludge sample before it is processed; the sludge treatment process begins entering the decanter until the sludge is finished processing. The results showed that the average volume of sludge was 24.84 m3, and the water removal efficiency was between 89–91%. The conclusion is that the set inflow rate is directly proportional to TSS while the efficiency of TSS water removal in the sludge is smaller so that the use of a decanter is greater. It recommended that the residual processing sludge be used as raw material for fertilizer production. The Pb and Zn content in the sludge does not exceed the quality standard. Keywords: decanter, clean production, TSS, sludge volume   ABSTRAK Air bersih yang diproduksi oleh PT Aetra Air Jakarta (AAJ) mengeluarkan banyak limbah cair. Selama ini, kegiatan produksinya digunakan sludge drying bed, dimana lumpur yang dihasilkan tidak sebanding dengan luas dan lamanya waktu pengeringan, sehingga lumpur yang tidak tertampung akhirnya terbuang ke badan air. Seiring kebutuhan perbaikan kualitas kegiatan operasional, penyedia layanan air bersih berupaya menciptakan zero waste dan ramah lingkungan melalui penggunaan decanter. Tujuan penelitian menentukan jumlah lumpur yang diolah pada proses pengolahan limbah cair dan mengukur efisiensi penyisihan air pada limbah lumpur menggunakan alat decanter. Metode pengumpulan data melalui pengamatan dan pengujian pengolahan limbah cair menggunakan decanter. Proses pengolahan decanter dimulai dari pengambilan sampel lumpur sebelum diolah, proses pengolahan lumpur dari awal masuk ke decanter sampai lumpur selesai diolah. Hasil penelitian menunjukkan rata-rata volume lumpur sebesar 24,84 m3, dan efisiensi penyisihan air antara 89–91%. Kesimpulannya adalah set inflow rate berbanding lurus dengan TSS sedangkan efisiensi penyisihan air TSS pada limbah lumpur semakin kecil sehingga penggunaan decanter menjadi lebih besar. Direkomendasikan agar lumpur sisa pengolahan dimanfaatkan sebagai bahan baku untuk pembuatan pupuk dengan syarat kandungan Pb dan Zn dalam lumpur tidak melebihi baku mutu. Kata kunci: decanter, produksi bersih, TSS, volume lumpur

Phosphorus in Drinking Water and it's Removal in Conventional Treatment Process

2012 ◽  
Vol 461 ◽  
pp. 453-456 ◽  
Author(s):  
Deng Ling Jiang ◽  
Yan Hua Chen ◽  
Guo Wei Ni
Keyword(s):  
Drinking Water ◽  
Removal Efficiency ◽  
Conventional Treatment ◽  
Treatment Process ◽  
Particulate Phosphorus ◽  
Available Phosphorus ◽  
Water Removal ◽  
Soluble Phosphate ◽  
Source Water ◽  
Treated Drinking Water

Chemical forms of phosphorus in source and treated drinking water were studied in this paper. Removal of total phosphorus (TP) and microbially available phosphorus (MAP) by conventional treatment process of drinking water was examined. The results showed that particulate phosphorus constituted of most TP in source water. Content of total soluble phosphate (TSP) was about 30% of TP. Soluble reactive phosphate (SRP) can be measured in a few months during a year and its content was very low. Content of MAP was higher than content of TSP in source water, which showed that microbe can also use particle phosphorus. Ratio of TSP to TP increased evidently in treated water. This demonstrated that removal of TSP was more difficult than particulate phosphorus in conventional treatment process for drinking water. Removal of TP and MAP in conventional treatment process of drinking water was effective, with averaged removal efficiency of 66% and 69%, respectively. Coagulation-sedimentation and filtration removed TP efficiently. Enhanced coagulation may increases removal efficiency of MAP. Lower content of MAP can control biostability of drinking water.

scholarly journals Carwash Wastewater Treatment by Electrocoagulation Using Aluminum Foil Electrodes

2019 ◽  
Vol 25 (10) ◽  
pp. 50-60
Author(s):  
Israa Mawlood Atiyah ◽  
Basma Abbas Abdul-Majeed
Keyword(s):  
Heavy Metals ◽  
Electrical Conductivity ◽  
Wastewater Treatment ◽  
Thin Layer ◽  
Removal Efficiency ◽  
Suspended Solids ◽  
Treatment Process ◽  
Treatment Time ◽  
Aluminum Foil ◽  
Total Dissolved Solids

Large quantities of contaminated carwash wastewater are produced per day from carwash places. Extensively it contains large quantities of chemicals from detergents, oil, grease, heavy metals, suspended solids, types of hydrocarbons, and biological contents. A novel electrocoagulation treatment by foil electrodes was conducted to remove COD, turbidity, Total Dissolved Solids (TDS) from contaminated carwash wastewater and decrease its Electrical Conductivity (EC). A thin layer of aluminum foil is used as an electrode in this treatment process. The effects of different voltage and treatment times were studied. The best result was found at a voltage of 30 volts and treatment time 90 minute where the removal efficiency of COD, turbidity, TDS, and EC were 97.94%, 99.90%, 25.31%, 15.57% respectively.    

Occurrence and Fate of Polycyclic Aromatic Hydrocarbons in the Anaerobic-Anoxic-Oxic Wastewater Treatment Process

2012 ◽  
Vol 610-613 ◽  
pp. 1722-1725
Author(s):  
Hui Mei Sun ◽  
Wei Jun Tian ◽  
Yong Mei Wang
Keyword(s):  
Wastewater Treatment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Removal Efficiency ◽  
Aromatic Hydrocarbons ◽  
Treatment Process ◽  
Eastern China ◽  
Treatment Plant ◽  
Secondary Stage ◽  
Log Kow ◽  
Polycyclic Aromatic

The occurrence and removal of polycyclic aromatic hydrocarbons (PAHs) was examined at different stages at a anaerobic-anoxic-oxic biological wastewater treatment plant in Qingdao City, eastern China. Results shown that 13 PAHs were detected at different treatment stage in wastewater and sludge. The total concentration in the influents was 15194.3ng/L, higher than the existing reports. Most abundant PAHs in influent were Naphthalene, Benzo(g,h,i)perylene, and Pyrene, accounting for 86.4%. The removal efficiencies of individual PAH compounds ranged from -7.5% to 73.5% in the total treatment process. A significant relationship was observed between the removal efficiency and log Kow of the PAH compounds in the grit stage (when the values of log Kow were higher than approximately 5), suggesting that these compounds were principally removed through sorption to sludge particles and transfer to sludge processing systems. In secondary stage, the removal efficiency of PAHs was only 4.4% due to impact of low temperature on biological activity. The removal efficiency of 28.8% indicated A2O process was not ideal in removing PAHs.

scholarly journals Giardia Cysts in Wastewater Treatment Plants in Italy

2003 ◽  
Vol 69 (6) ◽  
pp. 3393-3398 ◽  
Author(s):  
Simone M. Cacci� ◽  
Marzia De Giacomo ◽  
Francesca A. Aulicino ◽  
Edoardo Pozio
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Treatment Process ◽  
Wastewater Treatment Plants ◽  
Annual Rainfall ◽  
Human Consumption ◽  
Human Pathogens ◽  
Recycled Water ◽  
Treatment Procedures ◽  
Autumn And Winter

ABSTRACT Reductions in annual rainfall in some regions and increased human consumption have caused a shortage of water resources at the global level. The recycling of treated wastewaters has been suggested for certain domestic, industrial, and agricultural activities. The importance of microbiological and parasitological criteria for recycled water has been repeatedly emphasized. Among water-borne pathogens, protozoa of the genera Giardia and Cryptosporidium are known to be highly resistant to water treatment procedures and to cause outbreaks through contaminated raw or treated water. We conducted an investigation in four wastewater treatment plants in Italy by sampling wastewater at each stage of the treatment process over the course of 1 year. The presence of the parasites was assessed by immunofluorescence with monoclonal antibodies. While Cryptosporidium oocysts were rarely observed, Giardia cysts were detected in all samples throughout the year, with peaks observed in autumn and winter. The overall removal efficiency of cysts in the treatment plants ranged from 87.0 to 98.4%. The removal efficiency in the number of cysts was significantly higher when the secondary treatment consisted of active oxidation with O2 and sedimentation instead of activated sludge and sedimentation (94.5% versus 72.1 to 88.0%; P = 0.05, analysis of variance). To characterize the cysts at the molecular level, the β-giardin gene was PCR amplified, and the products were sequenced or analyzed by restriction. Cysts were typed as assemblage A or B, both of which are human pathogens, stressing the potential risk associated with the reuse of wastewater.

Performance of Horizontal Subsurface Flow Constructed Wetland of Application of Oily Wastewater

2012 ◽  
Vol 253-255 ◽  
pp. 965-968
Author(s):  
Xu Yang ◽  
Xue Ping Zhang ◽  
Ji Fu Wang ◽  
Bao Jian Wang ◽  
Xin Qi Guo
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Constructed Wetland ◽  
Treatment Process ◽  
Mineral Oil ◽  
Horizontal Flow ◽  
Oily Wastewater ◽  
Removal Rates ◽  
Subsurface Flow Constructed Wetland ◽  
The Mean

In order to evaluate the effects of constructed wetland treating oily wastewater, wastewater treatment was monitored during five months. The results showed that when the influent flux was 1.2m3/d, the mean removal rates of COD, TN, NH4+-N and mineral oil in the horizontal flow constructed wetland were 54.27%, 53.47%,54.84% and 50.19%, respectively. Constructed wetland had better removal efficiency and run stably in the treatment process of oily wastewater.

Comparison of F-specific bacteriophage, enterococci, and faecal coliform densities through a wastewater treatment process employing oxidation ponds

1995 ◽  
Vol 31 (5-6) ◽  
pp. 85-89 ◽  
Author(s):  
S. J. Turner ◽  
G. D. Lewis
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Faecal Coliform ◽  
Indicator Organisms ◽  
Faecal Coliforms ◽  
Wastewater Treatment Process ◽  
Oxidation Pond ◽  
Oxidation Ponds ◽  
Specific Bacteriophage

Over a 12 month period F-specific bacteriophages, faecal coliforms and enterococci were compared as microbial indicator organisms for the quality of a wastewater treatment (oxidation pond) system. Results suggest that enterococci may be the most useful indicator for oxidation pond systems.

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