BOD Parameters Research Articles

Determination of load capacity of BOD pollutant in Cisadane River with Qual2kw model & its effect on DO parameters

The research to determine the carrying capacity of pollutant loads in the middle to downstream Cisadane River segment started from Jl. Teuku Umar, Tangerang and ends at Muara Tanjung Burung, Tangerang Regency with a research time starting from March – June 2021. Increased land-use change due to human and industrial activities so that population growth and limited residential land make watersheds a target for land conversion. The purpose of this study is to identify sources of pollutants that have the potential to contaminate the Cisadane River in the middle to downstream segments, analyze water quality and pollutant load capacity, the Cisadane River in the middle to downstream segments along 34 km. The method used for identification of pollutant sources is carried out by conducting field surveys, water quality analysis is carried out by SNI and compared with quality standards according to Peraturan Pemerintah No. 22 of 2021, as well as analysis of the Pollutant Load Capacity (PLC) BOD and DO using the QUAL2Kw model. The results of identifying potential pollutant sources in the middle to a downstream segment of the Cisadane River are dominated by settlements, agriculture, industry, and other domestic activities, namely restaurants and stalls. The results of water quality analysis for BOD parameters ranged from 2.51 mg/L - 5.1 mg/L, and DO range from 5.4 mg/L – 7,2 mg/L. BOD parameters from all points 1-2 meet the quality standard class 2 (3 mg/L) & points 4-6 do not meet the quality standard. The DO parameter is still in good condition because the more significant the DO value, the waters are in good condition. The high levels of BOD in the Cisadane River are influenced by domestic waste that enters the river, and the land is dominated by built-up spaces as settlements, schools, hotels and malls. Land use around the river is very influential on the load of pollutants that enter the river. The lowest DTBP of the Cisadane River for BOD is 22497,9 kg/day, and the highest is 33201,6 kg/day. The decrease in the concentration of BOD load must be lowered in the Cisadane River by 29% - 42%.

The effect of time and velocity variation in sequencing batches reactor on cod and bod, removal efficiency in tofu waste

The tofu industry produces liquid waste that can cause pollution if it is not processed first. Tofu liquid waste has the characteristics of containing high organic matter such as BOD and COD so that if it has directly discharged into the environment, it will reduce the carrying capacity of the environment. The purpose of this study was to determine and analyse the effect of variations in times and velocity of sequence batch reactor on the optimization of COD and BOD removal in tofu industrial wastewater by anaerobic bacteria originating from natural sediments. The method used is an experimental method where the method is to find the effect on other things controlled by using artificial waste. The removal of COD and BOD in tofu industrial wastewater can be done by biological treatment process with attached growth using Sequencing Batch Reactor. The reactor inoculated by the septic tank sediment was fed with artificial waste containing a concentration of COD of 7,000 mg/l and BOD of 2,000 mg/l. For 35 days, this reactor will be operated in batches. Results showed a decrease in BOD and COD parameters using a sequencing batch reactor with BOD concentration 176 mg/l and COD concentration 570 mg/l.

EVALUATION OF WASTEWATER TREATMENT IN NUSA DUA TOURISM AREA AND THEIR CHALLENGES TO ALGAE BLOOM

<p>The wastewater treatment plant (WWTP) in the Nusa Dua area has implemented a stabilization pond to reduce organic matter and nutrients. Because it has been operating since 1980, it is necessary to evaluate the existing conditions. The aim of this study was to determine the percentage of organic and nutrient reduction from the WWTP system. Organic removal in the form of BOD and COD parameters were 71.84% and 75.11%, respectively. Meanwhile, nutrient parameters in the form of NH3-N, TN, and TP have a percentage of 83.64%; 59.41%, and -375.81%, respectively. TP is the only parameter that has increased, causing a problem which is caused by the explosion of algae population in the reservoir. TP allowance should be a concern in choosing advanced treatment.<em></em></p>

Analisis Daya Tampung Beban Pencemaran Air Sungai Asam Kota Jambi

The Asam River is one of the rivers that crosses the sub-districts, including Kota Baru, Jelutung and Pasar Jambi. Asam River is located in Jambi City with a length of 10.68 km, and a watershed area of 2,930 Ha. The Asam River is generally polluted by waste originating from activities, office areas, hotels, trade centers, prominent figures and residential areas. To determine the quality of acid river water, it is necessary to analyze the load carrying capacity of water pollution. Methods that can be used to analyze the load carrying capacity of water pollution include the Mass Balance method and the Streeter-Phelps method. Based on the results of the calculation of the carrying capacity of the river pollution load using the mass balance method on the parameters, pH, TSS, BOD and COD. The Asam River which cannot accommodate the pollution load is found in the TSS parameter of -110.129 mg/l with a quality standard of 30 mg/l according to the Ministry of Environment and Forestry Number P.68 of 2016 concerning domestic waste quality standards, while for the parameters pH, BOD, and COD still below the domestic waste quality standard. The results of the calculation of the carrying capacity of the pollution load using the streeter-phelps method show that at 4 sampling points the BOD concentration can still accommodate the pollution load in the river which does not exceed the quality standard. the effect of DO concentration on AP1 Upstream to AP4 Downstream is still available in sufficient amount of DO.

USING LONG-TERM BOD – EXPERIMENTS FOR SEASONAL RESEARCH OF ORGANIC MATTER COMPONENTS OXIDATION IN WATER FROM DIFFERENT AREAS OF LAKE ONEGO

Extensive research on the oxidation of organic matter components using long-term BOD experiments at 20 and 10 °C was conducted on Lake Onego in different seasons in 2013–2017. Water samples were taken from the central part of the lake, Pukhtа, Kondopoga, Petrozavodsk Bays, as well as the estuarine zone of the River Shuya in two variations: surface horizon (0.5 to 1 m) or integral (from surface to bottom). The samples showed a multistage BOD development with two or three О2 demand stages in the first, second and linear stages, which demonstrate the different oxidation patterns of organic matter components. It was found that the type of the first stage (E- or А-type) and the water sampling procedure defined the variations of BOD parameters. As a result, four alternative effects of these factors were identified. Minimal О2 demand over the experimental period as well as a higher lability of oxidizable organic matter in the first BOD stage were found in water from the central part of the lake, confirming high quality of the water in this part of the lake. Elevated lability of oxidizable organic matter components in water from other parts of the lake was identified in spring. Strong correlation was found between various organic matter components (labile and oxidation-”stable” humic substances) and kinetic BOD parameters (R2 = 0.60–1.00). Suspended particulate matter also proved to influence BOD kinetic parameters.

Analysis of the Water Quality Improvement in Urban Stream Using MIKE 21 FM

Domestic urban streams face insufficient base flow and consequently become dry streams in drought season, and vulnerable to water quality deterioration and ecological impairment, due to contaminants introduced from the urban pollutants. Many efforts are being made to improve the natural flow by actively enforcing restoration projects of urban streams. Gulpocheon is a national stream flowing through Incheon-si and Gimpo-si. As of March 2019, the reclaimed wastewater or the ozone-processed Gulpo treated sewage has formed the upper part of Gulpocheon. This study aimed to analyze the improvement in water quality of Gulpocheon before and after supplying the reclaimed water by collecting the water quality data of the target area. Before and after providing the base flow, the water quality was analyzed using the two-dimensional numerical analysis model, i.e., MIKE 21 FM. The water quality one year before and after supplying the reclaimed water was compared, with a focus on DO, BOD, TN, and TP; they are used as water quality standards for stream water. The concentration of DO at all spots of Gulpocheon increased on average. The concentration of BOD, TN, and TP water quality parameters decreased, indicating water quality improvement. In addition, accurate water quality assessment is possible using MIKE 21 FM model simulation for urban stream analysis.

Dampak Program Kampung Pelangi Terhadap Status Cemar Sungai Kemuning Berdasarkan Parameter Limbah Domestik

The objectives of this study were to: 1) analyze the water quality of Kemuning River after Kampung Pelangi program based on water quality standard class 2, 2) analyze the polluted status of the Kemuning River based on class II water quality standard before and after Kampung Pelangi program, 3) analyze the polluted status per parameter from the upstream, downstream and middle of the Kemuning River based on domestic waste parameter. This study was conducted in Kemuning River, Banjarbaru City, South Kalimantan. Measurement and sampling of the water was carried out through direct observation and measurement in the field (in situ) and laboratory testing (ex situ). Sampling locations included the upstream river, the middle part that passed through Kampung Pelangi, and the downstream/ estuary section. The results of this study found that the water quality after Kampung Pelangi program was not polluted in the upstream with a PI value of 0.2629, was mildly polluted in the middle and downstream with PI values of 3.258 and 3.152. The polluted status improved after Kampung Pelangi program in 2017 - 2018 compared to 2016. However, it experienced an increase in 2019. The polluted status exceeded class II water quality standards in the parameters of COD, BOD, and Phosphate due to domestic waste such as rubbish, industrial waste tempeh, and detergent from the laundry business.

Analysis of Farmers’ Perception and Attitudes of Water Quality in Margodadi Embung, South Lampung

Margodadi Embung (retention basin) is water pond that was designed for irrigation and conservation which is located in South Lampung, Indonesia. This Embung is surrounded through numerous farm fields, consisting of the cassava plant, corn plants, palm trees, and paddy fields. This research was aimed to know the farmers’ perception and attitudes of water quality in Margodadi Embung, South Lampung. Sampling was conducted using random sampling on farmers’ around the Embung, with the parameter of respondent profile, farming attitudes, knowledge about the Embung, and perception of the Embung water quality. The outcomes confirmed that the farmers had been using manure and chemical fertilizers for his or her fields, and also, they wiped clean their farm animals in Embung after plowing on the farm. Most of the farmers thought that the water quality is still good and fortunately, it was proved with the DO and BOD parameters that still be permitted according to Government Regulation no 82, 2001. However, it was indicated that the knowledge of the farmers of water quality will influence the perception and attitudes of the farmers towards the Margodadi Embung.

WATER QUALITY ANALYSIS AND POLLUTION LOAD CAPACITY OF RIVER KAPUAS IN MUKOK DISTRICT, SANGGAU REGENCY

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.

Analisis Daya Dukung DAS Berdasarkan Kriteria Tata Air dan Daya Tampung Beban Pencemaran Sungai Gedek

The increase in population every year and rapid economic development cause environmental problems related to the use of air resources. A need as what condition the water system to monitoring area stream the river in which to a variety problem environment. The purpose of this study was to determine the value of the load carrying capacity and assess the carrying capacity of the water management criteria. Based on the calculation of the pollution load capacity in class I, the parameters DO, COD, BOD, TSS and Ammonia exceed the load capacity of each of 3,325.07 mg/l, -9,872.32 mg/l, - 799,0063 mg/l, -271,705.21 mg/l, -664.06 mg/l. In class II that exceeds the load carrying capacity, the parameters DO, TSS, and Ammonia are 1,425.08 mg/l, -262.704.016 mg/l, -569.0619 mg/l, respectively. In class III, which exceeds the carrying capacity of the pollution load, the parameters DO, TSS, and Ammonia are 475.01 mg/l, -214.704.016 mg/l, -284.0558 mg/l, respectively. In class IV all parameters meet the pollution load capacity. The carrying capacity value based on the criteria of quality, quantity, and water continuity (water management) is 102.5 % included in the category.

The effectiveness of increasing the amount of Return Activated Sludge (RAS) in wastewater with a combination biofilter system on bulking parameters

Control of industrial wastewater treatment is very important to produce good effluent. Secondary processing is the heart of wastewater treatment. The problem that often occurs in secondary processing using activated sludge is bulking in the mixed liquor. Various studies on bulking have been done. The optimal aeration time is 3 hours to remove bulking in the mixed liquor caused by S.Natans bacteria. This research aims to determine the effectiveness of the addition of the amount of Return Activated Sludge (RAS) in wastewater with a combination biofilter system on bulking parameters. The method used is experimental in the laboratory. The research design used a completely randomized design. The variation of the test that will be carried out is the addition of the Return Activated sludge variation test to determine the effectiveness of adding RAS to wastewater with a biofilter combination system on bulking parameters. The experiment was repeated 3 times, resulting in 27 treatments. To test bulking, it is tested using the parameters SVI (Sludge Volume Index), DO, MLSS (Mixed Liquor Suspended Solid), and BOD. The results showed that the addition of Return Activated Sludge in wastewater was very effective in a combination biofilter system against bulking parameters.

EVALUASI PENERAPAN PROGRAM IPAL (INSTALASI PENGOLAHAN AIR LIMBAH) KOMUNAL DI KOTA BANDA ACEH

One solution for domestic waste treatment is the operation of a communal IPAL (WWTP, Wastewater Treatment Plant). This is in accordance with SDG's (Sustainable Development Goals), national and regional policies related to sustainable sanitation management. In Banda Aceh, the Sanimas (Community sanitation) program has been and is being implemented in 40 gampongs (villages) which are classified as slum areas. This study aims to determine the results of the effluent processing of the IPAL system (pH, BOD, COD, TSS, ammonia, Total Coliform, Oil/Fat parameters) to see whether the IPAL system that has been built is operating properly. There were five IPALs studied, namely in Gampong Peunayong (Dusun Cendrawasih), Gampong Tibang (Dusun Tgk. Meurah, Dusun Tgk Meulinje, Dusun Tengku Meulagu), and Gampong Panteriek (Dusun Jeumpa). The results of the effluent wastewater test showed that in all WWTPs, the BOD and COD parameters still exceeded the wastewater quality standards, and in one WWTP, the total Coliform parameter was >1,000/100 ml (quality standard >3,000/100 ml).

Kendala Pengendalian Pencemaran Total Suspended Solid dan Phosphat di Sub Das Tlaga Ria Sentani Pasca Banjir Bandang

The problem that occurs in Lake Sentani is that it has been contaminated by parameters of TSS, BOD, Pb, Cu, and DO respectively with valuesof 76 mg / L, 4.63 mg / L, 0.035 mg / L, 0.03 mg / L, and 5.72 mg / L because these parameters have exceeded the quality standard according to environmental regulations. This study aims to determine the assimilation capacity of TSS and PO4 parameters and analyze pollution control models in the Tlaga Ria sub-watershed. The research method used to determine the assimilation capacity is a linear regression equation and in analyzing the pollution control model the interpretative structural modeling method is used. The results showed that the TSS assimilation capacity value in Lake Sentani was -12,700 tons/month. The value of water quality in Lake Sentani is above the value of the assimilation capacity, this shows that Lake Sentani has been polluted by TSS parameters. Meanwhile, the value of PO4 parameter assimilation capacity is 44.36 tons/month and since 2016 Lake Sentani has been unable to conduct self purification. The key elements of the Sentani Lake pollution control constraints in the Tlaga Ria watershed are weak implementation of environmental regulations, differences in objectives among stakeholders, differences in objectives between administrative areas, weak support of business owners, conflict of interests, and weak enforcement of regulations.

Treatment-based hospital wastewater characterization and fractionation of pollutants

This study investigated detailed characterization of hospital wastewater, size distribution of major organic pollutants and COD fractionation. In order to estimate the amount of wastewater, water consumption values and number of patients from 1156 hospitals were assessed statistically, and hourly water consumption data of a middle size hospital were recorded. Significant differences were observed in the total water consumption of the hospitals even among the ones having similar bed capacities. The average daily water consumption per hospital was about 140 m3, while the 1st and 3rd quartile were 25 m3 and 150 m3 respectively. Pollutant size distribution (PSD) analysis provided specific fingerprints for COD, BOD, colour and AOX parameters of hospital wastewater. Size distribution analyses resulted that about 20% of the AOX was in size range smaller than 1 kDa which might be attributed to adsorbable iodinated compounds (AOI) generated in iodinated X-ray process. According to the PSD results, it can be estimated that up to 85-90% of the total COD and 75-80% of the total AOX can be removed by direct filtration process using an ultrafiltration-sized membrane. COD fractionation experiments revealed that hospital wastewater has more soluble inert COD content than domestic wastewater with a similar COD concentration. Therefore, slightly higher COD concentrations can be expected at the biological treatment effluent of hospital wastewater compared to domestic wastewaters with similar COD concentrations. The difference may be attributed to the use of various chemicals and cleaning agents of inert properties.

EFEKTIVITAS PENGGUNAAN BIJI ASAM JAWA (Tamarindus Indica L.) SEBAGAI BIOKOAGULAN MENGGUNAKAN METODE KOMBINASI KOAGULASI-FLOKULASI DAN FILTRASI TERHADAP LIMBAH CAIR INDUSTRI PENGOLAHAN IKAN UD. NAGATA TUNA

Fish processing industrial wastewater must be treated before being discharged into water bodies. This study aims to continue previous research to reduce pollutant levels in fish processing industrial wastewater in accordance with wastewater quality standards. In this study, coagulation-flocculation processing was carried out using tamarind seed powder and filtration processing using filter media consisting of zeolite, silica sand, activated carbon and filter sponges to reduce levels of Turbidity, TSS, COD, BOD and neutralize pH in water. fish processing industrial waste. The results showed that there was an effect of the coagulant dose of tamarind seeds on changes in the parameters of pH, turbidity, TSS, COD and BOD with an optimum dose of 2 g/L was able to change the pH value to 6.5 and reduce turbidity levels to 130.2 NTU, reduce levels of turbidity. TSS to 207 mg/l, lowers COD levels to 412.33 mg/l and lowers BOD levels to 400.25 mg/l. However, this reduction has not been able to reduce the levels of turbidity, TSS, COD and BOD according to quality standards. After the wastewater from the fish processing industry with a dose of 2 g/l tamarind seeds followed by a filtration process, it was able to increase the pH value to 7.7 and reduce turbidity levels to 29.4 NTU with an efficiency of 77.41%, lowering TSS levels to 39. ,5 mg/l with an efficiency of 80.91%, reducing COD levels to 119.88 mg/l with an efficiency of 70.92% and reducing BOD levels to 42.21 mg/l with an efficiency of 89.45%. The test results of the five parameters, namely pH, turbidity, TSS, COD and BOD, were in accordance with the quality standards of the liquid waste of the fish processingindustry.

Analisis Kualitas Air Lindi dan Permukaan pada areal TPA Sowi Gunung dan Sekitarnya di Kabupaten Manokwari Papua Barat

The aim of the research was to determine the quality of leachate water in the processing unit (IPAL) of TPA Sowi Gunung and the quality of surface water around the TPA in relation to the operation of the IPAL TPA.The method used in this research is descriptive method with cross sectional survey technique by collecting leachate samples from the IPAL unit and surface water samples from two springs around the landfill area accompanied by in situ measurements of pH parameters and continued with 6 parameter quality analysis others (TSS, TDS, BOD, COD, N-total, TOC) at the Laboratory of the Center for Environmental Research, University of Papua. The result of the research it is known that the parameters of pH, TSS, BOD, COD, N-total, and TOC in the TPA IPAL unit are categorized as under quality standards (PerMenLHK No.59 of 2016 concerning leachate quality standards for businesses and / or activities for final processing sites trash).In particular, the TDS parameter does not have a tolerance limit corresponding to this quality standard so that it becomes a separate consideration in its management considering that water with a high amount of dissolved solids> 1000 mg / L has an unpleasant taste, so it is not suitable for consumption.Likewise, the quality of surface water at 2 (two) observation points of springs through parameters of pH, TSS, TDS, BOD, COD, N-total, and TOC are categorized as under class I water quality standards according to PP No. 82 of 2001 concerning water quality management and water pollution control.

Performance evaluation of domestic wastewater treatment: case study “x building at Jakarta”

An evaluation of the Waste Water Treatment Plant (WWTP) “X Building” performance at Jakarta has been carried out. Domestic wastewater produced from X Building at Jakarta has a relatively high organic compound. It can cause environmental pollution, so wastewater treatment is required to reduce the concentration of organic compounds. The parameters of BOD, COD, TSS and Ammonia after treated compared to a quality standard of Permen LHK RI No.68/Menlhk/Setjen/kum.1/8/2016. The removal efficiency of BOD, COD, TSS and Ammonia were studied. The evaluation was conducted from January 2019 up to March 2021. Domestic wastewater treatment with process activated sludge with fixed film media is quite effective for lowering organic pollutants, COD, BOD, TSS and ammonia. The removal efficiency of BOD, COD, TSS and Ammonia greater than 90%. In August 2019 and September 2019, the removal efficiency for all parameters decreased, and the Ammonia parameter decreased to 47% in August and 55% in September 2019. The Elimination Efficiency of each parameter increased again to reach more than 90% from October 2019 until December 2019. In 2020, with an average discharge of 242, the removal efficiency of all parameters would get more than 95%. From January 2019 to March 2021, the parameters of BOD, COD and TSS have a concentration below the quality standard. For Ammonia parameters, in August and September 2019, ammonia parameters exceed the quality standard and below the quality standard in other months.

Level of Water Pollution Based on Organic Material Parameters and Number of Bacteria Escherechia coli in Dumai River Estuary, Dumai City

This research was conducted in March 2020 at the Dumai River Estuary, Dumai City, Riau Province. The purpose of this study was to analyze the parameters of OT, BOD and TOM in the Dumai River Estuary; analyzing E. coli bacteria in the Dumai River Estuary and Determining the Level of Water Pollution Based on the Content of Organic Material Parameters and E. coli in the Dumai River Estuary. The data analysis method refers to OT (SNI 06.6989.14-2004), BOD (SNI 06-2503-2009), BOT (SNI 06-6989.22-2004) and E. coli (SNI 2897-2008). The results of measuring the parameters of organic matter content in the Dumai River Estuary, OT levels ranged from 4.1 - 4.6 mg /L, BOD5 levels ranged from 21.5 - 30.6 mg /L, the TOM content in The Dumai River Estuary ranges from 104 -165 mg /L and E. coli bacteria in the Dumai River Estuary ranges from 180 - 764 MPN /100 mL. The level of pollution at the Dumai River Estuary is based on the parameters of organic matter and E. coli content, including the criteria for light pollution

Rhizopus oryzae-Mediated Green Synthesis of Magnesium Oxide Nanoparticles (MgO-NPs): A Promising Tool for Antimicrobial, Mosquitocidal Action, and Tanning Effluent Treatment.

The metabolites of the fungal strain Rhizopus oryaze were used as a biocatalyst for the green-synthesis of magnesium oxide nanoparticles (MgO-NPs). The production methodology was optimized to attain the maximum productivity as follows: 4 mM of precursor, at pH 8, incubation temperature of 35 °C, and reaction time of 36 h between metabolites and precursor. The as-formed MgO-NPs were characterized by UV-Vis spectroscopy, TEM, SEM-EDX, XRD, DLS, FT-IR, and XPS analyses. These analytical techniques proved to gain crystalline, homogenous, and well-dispersed spherical MgO-NPs with an average size of 20.38 ± 9.9 nm. The potentiality of MgO-NPs was dose- and time-dependent. The biogenic MgO-NPs was found to be a promising antimicrobial agent against the pathogens including Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans with inhibition zones of 10.6 ± 0.4, 11.5 ± 0.5, 13.7 ± 0.5, 14.3 ± 0.7, and 14.7 ± 0.6 mm, respectively, at 200 μg mL–1. Moreover, MgO-NPs manifested larvicidal and adult repellence activity against Culex pipiens at very low concentrations. The highest decolorization percentages of tanning effluents were 95.6 ± 1.6% at 100 µg/ 100 mL after 180 min. At this condition, the physicochemical parameters of tannery effluents, including TSS, TDS, BOD, COD, and conductivity were reduced with percentages of 97.9%, 98.2%, 87.8%, 95.9%, and 97.3%, respectively. Moreover, the chromium ion was adsorbed with percentages of 98.2% at optimum experimental conditions.

STUDI KELAYAKAN TEKNIK DAN BIAYA TERHADAP ALTERNATIF FITOREMIDIASI PADA AIR LIMBAH PENGOLAHAN KOPI

Sidomulyo Village is one of the coffee-producing location s in Silo District, Jember Regency. The coffee processing waste is no handling. Th e co ff ee p ro ce ss in g wa st ew at er could potentially lead to a decrease in environmental quality. Phytoremediation is an alternative technology that can be applied because of the availability of a waste storage pond in Sidomulyo , which ca n to become a pool for phytoremediation. Be si de s, phytoremediation is a simple technology that can reduce the concentration in coffee processing liquid waste. The purpose of this study was to compare phytoremediation alternatives using the aeration, circulation, and constructed wetland (CW) system , which is the most feasible to be applied to coffee processing wastewater treatment in Sidomulyo Village based on tech no lo gy and cost aspects. The stages of this research we re direct surveys of respondents, comparing the efficiency of phytoremediation performance with aeration, circulation and constructed wetland (CW) systems, analysis of techn ic al feasibility, and costs. The research results show that phytoremediation with the CW system is more t ha n feasible than aeration and circulation systems based on technological and cost aspects. Phytoremediation application using the CW system based on the tech no lo gy or technical aspects is more th an feasible because it easy application and has a shorter residence time (continuity). The value of the reduction efficiency of TSS, BOD, and COD parameters in coffee wastewater treatment using phytoremediation with the CW system is sequentially 29.80; 63.75; and 63.70%. Inventory cost of con structing CW for processing coffee wastewater of Rp. 64,050,000 with a storage capacity of 82.5 m 3 .