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"The Quezon City Controlled Dumping Facility (QCCDF) has been the ‘main disposal site ofQuezon City, the largest city within Metro Manila since the 1970s. With the huge volume ofwastes received every day and with no protective liner on the old mound and creeks directlyconnecting the facility to Marikina River, the main river system in eastern Metro Manila, surfaceand groundwater contaminations have been a critical concern. The main objective of the study is todetermine the effect of the disposal site on the surface water and groundwater quality by evaluatingthe water quality at different points in and around the landfill. Secondarily, it aims to investigatecorrelations between the water quality parameters as well as determine any seasonal effects on thewater quality. Sampling points from wells on and around the facility were collected for six monthscovering dry and wet season using Horiba water quality monitoring equipment and CHEMetrics V-2000 Photometer. Leachate quality parameters pH, turbidity, DO, and chloride are not affected bythe change in seasons as evidenced by statistical t-tests. Temperature is higher during the wetseason, while TDS is lower at this time which may be attributed to dilution due to rainfall. DO andturbidity in leachate is strongly negatively correlated, while temperature and C1‘ in leachate arepositively correlated. In groundwater, the change in season affects temperature, TDS and chlorideconcentrations. This trend is not evidenced in pH and turbidity. TDS and chloride are correlatedwith each other. Based on the surface water quality measurements, temperature, pH, DO, and TDSare affected by the change in season while turbidity and chloride are not, based on the comparisonof samples taken from different locations. Aside from strong correlation of Cl’ and TDS, as seen ingroundwater, very strong correlations are also observed between Cl’ and DO, and TDS and DO.Using chloride ion as indicator of leachate, the study reveals that the leachate tends to spreaddownward towards Marikina River. Based on the comparison of chloride concentrations near theoutfall of the leachate creek at Marikina River, it can be seen that the release of leachate at the riverimpacts the river as evidenced by an increase in chloride concentration downstream of the outfall."

"Dengan peningkatan pembangunan, itu juga akan mendorong permintaan listrik di sektor rumah tangga, yang juga disertai dengan peningkatan emisi gas rumah kaca yang dihasilkan. Maka dari itulah diambil inovasi pembangunan di bidang pembangunan perumahan berbasis Near zero energy house. Tetapi metode ini menggunakan teknologi tinggi di mana harga bahan dan biaya perawatan mahal. Sehingga dua hal yang dibutuhkan saling bertentangan. Untuk mengatasi masalah ini, diperlukan bantuan optimisasi dengan menggunakan instrumen penelitian perangkat lunak BeOpt yang menggunakan metode pencarian sekuensial dengan memasukkan input dalam bentuk variabel yang telah divalidasi oleh penelitian sebelumnya. Tujuan dari penelitian ini adalah untuk mengetahui variabel berbasis NZEH yang diterapkan pada rumah dengan tipe sederhana dan hasil analisis biaya dari proses optimasi. Hasil optimasi yang diperoleh dengan menerapkan variabel NZEH mengakibatkan penurunan biaya siklus hidup NPV berkurang dari Rp.1.187.834.228,96 menjadi Rp.771.992.791,88, atau dengan nilai persentase 35%. Dari pengeluaran ini, itu akan dikurangi dengan menghemat listrik yang diperoleh dari Photovoltaics sebesar 66,39% setiap tahun. Dengan demikian hasil yang optimal diperoleh dengan harga yang terjangkau, sehingga perumahan Near Zero Energy Housing akan banyak diterapkan di Indonesia.

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With increased development, it will also drive electricity demand in the household sector, which is also accompanied by an increase in greenhouse gas emissions produced. Therefore, innovation development in the field of housing development based on Near zero energy house is taken. But this method uses high technology where material prices and maintenance costs are expensive. So that the two things needed are conflicting.

To overcome this problem, optimization assistance is needed by using BeOpt software research instruments that use a sequential search method by inputting input in the form of variables that have been validated by previous studies.

The purpose of this study was to determine the NZEH-based variables applied to homes with simple types and the results of the cost analysis of the optimization process.

Optimization results obtained by applying the NZEH variable resulted in a reduction in the life cycle cost of the NPV reduced from Rp.1,187,834,228.96 to Rp.771,992,791.88, or with a percentage value of 35%. From this expenditure, it will be reduced by saving electricity obtained from Photovoltaics by 66.39% every year. Thus optimal results are obtained at an affordable price, so that Near Zero Energy Housing housing will be widely applied in Indonesia."

"Near Zero Energy House nZEH merupakan sebuah bangunan yang menghasilkan energi terbarukan yang cukup untuk memenuhi konsumsi energi tahunannya sendiri dengan berbagai persyaratan yang ada. Near Zero Energy House nZEH dapat mengurangi penggunaan energi tidak terbarukan listrik PLN pada sebuah bangunan. Rumah merupakan salah satu penyumbang penggunaan energi listrik nasional sebesar 29 Pengkajian Energi Universitas Indonesia, 2006. Konsep rumah hemat energi adalah rumah yang hanya menggunakan tenaga listrik saat benar-benar dibutuhkan. Tujuan dari penelitian ini adalah untuk mengetahui variabel berbasis nZEH yang digunakan pada rumah klaster mewah di Jakarta dan analisis biaya hasil dari proses optimasi. Metode expert judgement diaplikasikan untuk mendaptkan opsi terbaik untuk dilanjutkan pada proses optimasi. Selanjutnya metode sequential search diaplikasikan pada saat proses optimasi melalui software BEopt. Hasil optimasi setiap komponen pada bangunan rumah, meningkatkan penghematan energi listrik pada rumah tersebut. Hasil optimasi didapatkan dengan penerapan variabel nZEH pada suatu bangunan akan megakibatkan kenaikan biaya konstruksi sebesar 12,96. Namun penggunaan energi listrik pada rumah tersebut akan berkurang hingga 67,68 setiap tahun dan NPV dari life cycle cost pada rumah akan berkurang dari Rp.1.038.592.556,00 menjadi Rp.906.419.039,00 atau berkurang hingga 12,37.

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Near Zero Energy House nZEH is a building that produces enough renewable energy to meet its own annual energy consumption with various requirements. Near Zero Energy House nZEH can reduce the use of non renewable energy PLN in a building. The house is one contributor to the use of national electrical energy by 29 Energy Assessment University of Indonesia, 2006. The concept of energy efficient home is a house that only uses electricity when absolutely necessary.

The purpose of this study was to find out the nZEH based variables used in luxury cluster homes in Jakarta and cost analysis of the results of the optimization process. The expert judgment method is applied to obtain the best option to proceed on the optimization process. Furthermore, sequential search method is applied during optimization process through BEopt software.

The optimization results of each component in the house building, increase the electrical energy savings in the house. Optimization results obtained by applying the nZEH variable in a building will result in a 12.96 increase in construction cost. However, the use of electrical energy in the house will decrease up to 67,68 every year and NPV from life cycle cost at home will decrease from Rp.1.038.592.556,00 to Rp.906.419.039,00 or decrease until 12,37."