Kajian tentang Kelayakan Proses Daur Ulang Air Limbah Rumah Tangga Menjadi Air Baku untuk Air Bersih di Pemukiman Karyawan PT. Inalum Tanjung Gading Kabupaten Batubara

Abstract

The aim of research conducted in this thesis is to investigate the feasibility of wastewater treatment plant (Sewage Station) and water treatment plant (Water Station) in family housing of PT. Inalum employees at Tanjung Gading implementing the process of recycling waste water that meet with physical criteria and hygienic (chemical and biological) as potable water. It is also to determine the economic feasibility and community perception regarding recycling program the waste water. Data collection in this research was conducted on September to November 2010, that s consist water quality data such as; Sipare-pare s river waters as raw water (as water station input), and output water from Sewage station and water station was obtained through sampling and analysis at laboratory PT. Inalum and parallel analysis was conducted at central research laboratory of University of North Sumatera as reference in November 2010 were used to assess the feasibility of existing treatment facilities. Public perception data were collected through questionnaires given to employees of PT. Inalum 68 respondents with the cluster and purposive sampling method. The data is processed and the results of questionnaires conducted statistical tests chi squre, Kruskal Wallis and t-test by using SPSS v.17 statistics software. The results of this study concluded that the facilities Sewage station and water station at the housing family of PT. Inalum employees at Tanjung Gading, Batubara feasible to implement the process of recycling waste water when viewed from physical, hygienic, and economical aspects. In addition it also obtained information about public perception, in which most of employees (56%) did not support and do not feel comfortable with their waste water recycling program because of lack of socialisation about information and public knowledge about recycling programs of waste water.

Tujuan penelitian yang dilakukan dalam tesis ini adalah untuk mengetahui kelayakan fasilitas instalasi pengolahan air limbah (sewage station) dan instalasi pengolahan air bersih (water station) yang ada di pemukiman karyawan PT. Inalum Tanjung Gading untuk melaksanakan proses daur ulang air limbahnya sehingga memenuhi kriteria fisik dan higienis (kimia dan biologi) sebagai air bersih. Selain itu juga untuk mengetahui kelayakan ekonomis dan persepsi masyarakat di pemukiman karyawan Tanjung Gading terhadap rencana mendaur ulang air limbah tersebut. Pada penelitian ini dilakukan pengumpulan data dari bulan September sampai Nopember 2010, yang terdiri dari data-data kualitas air, meliputi: data air sungai Sipare-pare sebagai air baku (masukan water station), data kualitas air keluaran hasil pengolahan sewage station dan water station yang diperoleh melalui sampling dan analisis di laboratorium PT. Inalum dan sebagai pembanding pada pengambilan sampel di bulan November 2010 dilakukan juga analisis di Laboratorium Penelitian USU, yang digunakan untuk mengkaji kelayakan fasilitas pengolahan yang ada. Pengumpulan data persepsi masyarakat dilakukan melalui kuisioner yang diberikan kepada karyawan PT. Inalum sebanyak 68 responden dengan metode cluster dan purposive sampling. Data hasil kuisioner diolah dan dilakukan uji statistik chi square, Kruskal Wallis dan t-test dengan bantuan software SPSS v.17. Dari hasil penelitian dapat disimpulkan bahwa fasilitas sewage station dan water station di pemukiman karyawan PT. Inalum Tanjung Gading Batubara layak secara fisik, higienis (kimia dan biologi) dan ekonomis untuk melaksanakan proses daur ulang air limbahnya. Selain itu diperoleh juga informasi tentang persepsi masyarakat, di mana sebahagian besar (56%) tidak mendukung dan merasa tidak nyaman terhadap program daur ulang air limbah karena kurangnya sosialisasi tentang informasi dan pengetahuan masyarakat tentang program daur ulang air limbah tersebut.