Influence de la température sur le rendement des filtres au charbon activé biologique

1989 ◽  
Vol 16 (6) ◽  
pp. 820-828 ◽  
Author(s):  
Sylvie Letendre ◽  
Raymond Desjardins ◽  
Line Fortin ◽  
Pierre Lafranche ◽  
François G. Brière
Keyword(s):  
Activated Carbon ◽  
Removal Rate ◽  
Treatment Plant ◽  
Warm Season ◽  
Water Treatment Plant ◽  
Activated Carbon Adsorption ◽  
Temperature Variations ◽  
Biological Activated Carbon ◽  
Carbon Adsorption ◽  
Start Up

To evaluate the performance of the biological activated carbon filters at the Sainte-Rose water treatment plant in Ville de Laval (Québec), water and carbon samples were taken over a period of 150 days. Sampling began 1 year after filter start-up. The filters were then in a pseudo-equilibrium state. During winter, the removal rate of organic material is reduced because of lower water temperatures which affect bacterial activity. Bacterial density in the upper layers of the filter is influenced by temperature variations. During the warm season, bacteria counts are higher in the upper layer of the carbon, in the filter effluent, and in the backwash water. For equal carbon masses, bituminous carbon and peat-based extruded carbon have similar removal rates. However, for equal volumes, bituminous carbon is more efficient. Key words: biological activated carbon, adsorption, filtration, drinking water, organic matter.

scholarly journals Comparison of Coal-, Coconut-, and Wood-Based Activated Carbons for Removal of Organic Matters in Wastewater Treatment Plant Effluent

2021 ◽  
Vol 43 (4) ◽  
pp. 257-264
Author(s):  
Eunkwang Kwon ◽  
Soohyung Park ◽  
Wontae Lee
Keyword(s):  
Activated Carbon ◽  
Contact Time ◽  
Organic Materials ◽  
Activated Carbons ◽  
Removal Rate ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Activated Carbon Adsorption ◽  
Publicly Owned Treatment Works ◽  
Carbon Adsorption

Objectives : This study investigated the removal of dissolved organic materials by coal-, coconut-, and wood-based activated carbons to assess the addition of an activated carbon process to a publicly owned treatment works (POTW).Methods : We assessed the removal of total organic carbon (TOC) by each process in the POTW, and examined the removal of TOC and UVA254 upon adding different amounts of coal-, coconut- and wood-based activated carbons (50, 100, 200, 300, and 400 mg/L) with various contact time (10, 20, 30, 60, 120 min).Results and Discussion : Approximately 80% of TOC was removed throughout the POTW compared to the influent. The activated carbon adsorption tests of coagulated wastewater revealed that the removal rate of TOC and UVA254 from coal-based activated carbon was higher than those of coconut-based and wood-based activated carbons. The removal rate of dissolved organic materials was highest in ozone treated wastewater in all types of activated carbons, followed by ultraviolet disinfected wastewater and coagulated wastewater.Conclusions : It was possible to remove an additional 35-55% of dissolved organic materials upon addition of activated carbon to the treated wastewater although the removal depends on the material of the activated carbon, the injection amount, and the contact time. If an activated carbon process is adopted to the POTW, it can meet the effluent water quality standards (TOC).

scholarly journals Pesticide removals in the nitrifying expanded-bed filter at drinking water treatment plant

2020 ◽  
Vol 15 (1) ◽  
pp. 1-13
Author(s):  
Nguyet Thi-Minh Dao ◽  
The-Anh Nguyen ◽  
Viet-Anh Nguyen ◽  
Mitsuharu Terashima ◽  
Hidenari Yasui
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Cost Effective ◽  
Water Treatment Plant ◽  
Field Analysis ◽  
Expanded Bed ◽  
Biological Activated Carbon

The occurrence of pesticides even at low concentrations in drinking water sources might induce potential risks to public health. This study aimed to investigate the removal mechanisms of eight pesticides by the nitrifying expanded-bed filter using biological activated carbon media at the pretreatment of a drinking water plant. The field analysis demonstrated that four pesticides Flutolanil, Buprofezin, Chlorpyrifos, and Fenobucard, were removed at 82%, 55%, 54%, and 52% respectively, while others were not significantly removed. Under controlled laboratory conditions with continuous and batch experiments, the adsorption onto the biological activated carbon media was demonstrated to be the main removal pathway of the pesticides. The contribution of microorganisms to the pesticide removals was rather limited. The pesticide removals observed in the field reactor was speculated to be the adsorption on the suspended solids presented in the influent water. The obtained results highlighted the need to apply a more efficient and cost-effective technology to remove the pesticide in the drinking water treatment process. Keywords: biological activated carbon; drinking water treatment; nitrifying expanded-bed filter; pesticide removal.

scholarly journals PERENCANAAN INSTALASI PENGOLAHAN AIR LIMBAH DOMESTIK DENGAN KOMBINASI UNIT BIOFILTER AEROBIK DAN ADSORPSI KARBON AKTIF KANTOR PUSAT PT.PERTAMINA MARKETING OPERATION REGION (MOR) V SURABAYA

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Ridlo Barkah Jembar Pinanggih ◽  
Dyah Ratri Nurmaningsih ◽  
Sulistiya Nengse ◽  
Teguh Taruna Utama ◽  
Abdul Hakim
Keyword(s):  
Waste Water ◽  
Activated Carbon ◽  
Treatment Plant ◽  
Quality Data ◽  
Waste Water Treatment Plant ◽  
Processing Plant ◽  
Activated Carbon Adsorption ◽  
Water Quality Data ◽  
Carbon Adsorption ◽  
Marketing Operation

Permasalahan air limbah di Indonesia merupakan isu pencemaran lingkungan yang strategis dalam pembangunan berkelanjutan, baik yang bersumber dari pemukiman penduduk maupun unit usaha perkantoran. Tingginya kandungan organik terlarut di dalam air limbah dapat menyebabkan penurunan intesitas masuknya cahaya matahari yang dibutuhkan oleh mikroorganisme fotosintetik dan berdampak pada penurunan kualitas badan air. Tujuan dari penelitian ini yaitu merencankan pembangunan unit Instalasi Pengolahan Air Limbah (IPAL) domestik di Kantor Pusat PT. Pertamina Marketing Operation Region (MOR) V Surabaya dengan menggunakan kombinasi unit biofilter aerobik dan adsorpsi karbon aktif beserta perhitungan volume bangunan dan Rencana Anggaran Biaya (RAB) yang dibutuhkan. Teknologi pengolahan ini dipilih karena memiliki keunggulan dalam meremoval kadar pencemar organik dengan tingkat efisiensi yang tinggi dan kebutuhan lahan yang tidak terlalu luas. Metode penelitian menggunakan data sekunder yang diperoleh dari data perusahaan berupa debit pemakaian air bersih, layout kantor, data kualitas air limbah, serta informasi lain yang terkait dengan perencanaan. Hasil penelitian yang didapat berupa gambar desain (DED) unit IPAL, dimensi total bangunan pengolah seluas 34m2(P=17m dan L=2m), spesifikasi bahan yang digunakan, serta rencana anggaran biaya yang dibutuhkan untuk pembangunan kontruksi unit IPAL yaitu sebesar Rp243.136.020,00. Perencanaan ini juga ditunjang dengan panduan dalam operasional dan perawatan unit IPAL.  Kata kunci: Adsorpsi karbon aktif, air limbah domestik, biofilter aerobik, desain IPAL. The problem of wastewater in Indonesia is a strategic issue of environmental pollution in sustainable development, both sourced from residential areas and office business units. The high dissolved organic content in wastewater can cause a decrease in the intensity of sunlight needed by photosynthetic microorganisms and have an impact on the quality of water bodies. The purpose of this study is to plan the construction of a domestic Waste Water Treatment Plant (WWTP) at the Head Office of PT. Pertamina Marketing Operation Region (MOR) V Surabaya using a combination of aerobic biofilter units and activated carbon adsorption along with the calculation of building volume and the required Budget Plan. This processing technology was chosen because it has advantages in renovating organic pollutant levels with a high level of efficiency and land requirements that are not too broad. The research method uses secondary data obtained from company data in the form of debit of clean water usage, office layout, waste water quality data, and other information related to planning. The results obtained in the form of design drawings (DED) of WWTP units, the total dimensions of the processing plant area of 34m2 (P = 17m and L = 2m), as well as the material specifications used, as well as the budget plan required for the construction of WWTP unit construction is Rp243. 136,020.00. This planning is also supported by guidelines in the operation and maintenance of WWTP units. Keywords: Activated carbon adsorption, aerobic biofilter, domestic wastewater, WWTP design.

Microwave-Ferrous Sulfate Modified Activated Carbon Adsorption Study on Phosphorus Removal

2014 ◽  
Vol 919-921 ◽  
pp. 2149-2152
Author(s):  
Ya Feng Li ◽  
Chun Fei Wei
Keyword(s):  
Activated Carbon ◽  
Reaction Time ◽  
Phosphorus Removal ◽  
Ferrous Sulfate ◽  
Removal Rate ◽  
High Concentration ◽  
Activated Carbon Adsorption ◽  
Modified Activated Carbon ◽  
Carbon Adsorption ◽  
Treated Effluent

Using microwave-ferrous sulfate modified activated carbon adsorption manner to remove the high concentration of phosphorus in wastewater. The power of microwavethe concentration of ferrous sulfate and reaction time on phosphorus removal were studied. When the power of microwave was 425W,the concentration of ferrous sulfate was 0.1mol/L,reaction time was 50 min,the removal rate of TP reaches 95.67%,the treated effluent TP can be dropped to 0.48mg/L,the TP can reaches the first effluent standard of TP in the comprehensive wastewater discharge standard (GB8978-1996).Microwave-ferrous sulfate modified activated carbon is adapted to treat high concentration phosphorus in the wastewater.

Comparative and integrative environmental assessment of advanced wastewater treatment processes based on an average removal of pharmaceuticals

2013 ◽  
Vol 67 (2) ◽  
pp. 387-394 ◽  
Author(s):  
Elorri Igos ◽  
Enrico Benetto ◽  
Silvia Venditti ◽  
Christian Köhler ◽  
Alex Cornelissen
Keyword(s):  
Removal Rate ◽  
Treatment Plant ◽  
Post Treatment ◽  
Activated Carbon Adsorption ◽  
Treatment Processes ◽  
Carbon Adsorption ◽  
Decentralized Treatment ◽  
Advanced Technologies ◽  
Treatment Technologies

Pharmaceuticals are normally barely removed by conventional wastewater treatments. Advanced technologies as a post-treatment, could prevent these pollutants reaching the environment and could be included in a centralized treatment plant or, alternatively, at the primary point source, e.g. hospitals. In this study, the environmental impacts of different options, as a function of several advanced treatments as well as the centralized/decentralized implementation options, have been evaluated using Life Cycle Assessment (LCA) methodology. In previous publications, the characterization of the toxicity of pharmaceuticals within LCA suffers from high uncertainties. In our study, LCA was therefore only used to quantify the generated impacts (electricity, chemicals, etc.) of different treatment scenarios. These impacts are then weighted by the average removal rate of pharmaceuticals using a new Eco-efficiency Indicator EFI. This new way of comparing the scenarios shows significant advantages of upgrading a centralized plant with ozonation as the post-treatment. The decentralized treatment option reveals no significant improvement on the avoided environmental impact, due to the comparatively small pollutant load coming from the hospital and the uncertainties in the average removal of the decentralized scenarios. When comparing the post-treatment technologies, UV radiation has a lower performance than both ozonation and activated carbon adsorption.

Influence of backwashing on the microbial community in a biofilm developed on biological activated carbon used in a drinking water treatment plant

2007 ◽  
Vol 55 (8-9) ◽  
pp. 173-180 ◽  
Author(s):  
I. Kasuga ◽  
D. Shimazaki ◽  
S. Kunikane
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Biological Activated Carbon ◽  
Drinking Water Treatment Plant ◽  
Relative Abundances ◽  
Rdna Analysis

The influence of backwashing on the biofilm community developed on biological activated carbon (BAC) used in a drinking water treatment plant was investigated by means of bacterial cell enumeration and terminal-restriction fragment length polymorphism (T-RFLP) fingerprinting analysis of bacterial and eukaryotic ribosomal RNA genes (rDNA). After backwashing, the attached bacterial abundance in the top layer of the BAC bed decreased to 64% of that before backwashing. The community level changes caused by backwashing were examined through the T-RFLP profiles. In the bacterial 16S rDNA analysis, the relative abundances of some terminal-restriction fragments (T-RFs) including the Planctomycetes-derived fragment increased; however, the relative abundances of some T-RFs including the Betaproteobacteria-derived fragments decreased. In the eukaryotic 18S rDNA analysis, the relative abundances of some T-RFs including the protozoan Cercozoa-derived fragments increased; however, the relative abundances of some T-RFs including the metazoan Chaetonotus- and Paratripyla-derived fragments decreased. The T-RFLP analysis suggests that backwashing can cause changes in the relative compositions of microorganisms in a BAC biofilm in the top layer of the bed.

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