Laundry merupakan usaha yang menghasilkan limbah cair setiap harinya yang bisa berdampak pada pencemaran tanah dan air jika tidak dikelola dan diolah dengan benar. Dilihat secara visual kondisi air limbah laundry di lingkungan PT X Kampung Seraya, Komplek Pelita Kecamatan Lubuk Baja masih belum memenuhi syarat kualitas air yang baik, maka diperlukan suatu pengolahan (treatment) dalam mengatasi permasalahan tersebut. Salah satu caranya adalah dengan menggunakan metode penyaringan sederhana. Metode ini diharapkan dapat digunakan oleh PT X dalam mengolah limbah cair yang dihasilkan sebelum dibuang ke badan air dengan tujuan mengurangi beban pencemaran air pada lingkungan yang sesuai standar kesehatan masyarakat yang memenuhi parameter kualitas air dari segi fisika dan kimia sesuai dengan Peraturan Menteri Lingkungan Hidup No.5 Tahun 2014. Penelitian yang dilakukan merupakan penelitian eksperimen atau percobaan (experiment research).Adapun rancangan penelitian yang digunakan pada penelitian ini adalah one group pretest-posttest (pretest-posttest design.          Dari hasil penelitian pada kualitas air sebelum pengolahan, terdapat beberapa parameter tidak memenuhi syarat dan setelah dilakukan pengolahan dengan kombinasi penyaringan zeolite dan arang aktif dapat memperbaiki kualitas air limbah laundry yaitu menurunkan kadar phospat hingga 98,46%.

Background : Field workers of PT. PLN Batam, generally already know what dangers there are their working surroundings. Where the workers agree to follow all rules and instructions.In practice, not all workers adhering to the regulations and instructions of the field work.In addition, the lack of employee knowledge about the things that can cause accident of work. Purpose : To knowing the correlation behavior workers with a work accident in the implementation of work permit in PT. PLN Batam year 2018. Research methods : The research was classified as quantitative research design cross-sectional study, the population in this research is the entire staff employees of PT. PLN Batam, after doing the calculation using the formula for slovin sample, then the number of samples taken is 93 respondents. Research results : Workers who know about work permit 61 persons (65.6%) who did not know the 32 people (34.4%). A bad worker attitude as much as 48 people (51.6%) good attitude 45 people (48.6%).A bad worker action 52 person (55.9%) good 41 persons (44.1%). Workers who never suffered a work accident 61 persons (65.6%) who have experienced work accident 32 people (34.4%). There is a relationship of knowledge workers with a work accident value of 0.006 p value. There is a relationship of the attitude of the workers with a work accident value p value 0.004. There is a relationship with the worker's actions work accident value p value 0.010. Conclusion and Suggestion : There is a relationship between the behavior of workers with a work accident in the implementation of work permit, but there are still some flaws, namely a good knowledge is not followed by attitude and action by the workers. And to achieve a good worker behavior, companies should enhance supervision to workers such as the execution of the work in accordance with the working procedures so that the level of work accident can be lowered

Mosquitoes are insects that can interfere because, in addition to causing itching and pain, several types of mosquitoes are vectors or transmitters of various diseases. One of the free and environmentally friendly mosquito vector controls is to make simple traps with attractants containing fermented natural ingredients. This study aimed to determine the effectiveness of cassava fermentation, sugarcane water fermentation, brown sugar fermentation, and banana skin fermentation as mosquito attractants. This study is experimental research designed as a post-test–only control group design. The results showed that the ability of fermented cassava, sugarcane water fermentation, brown sugar fermentation as mosquito attractants did not significantly differ in attracting mosquitoes with the number of trapped mosquitoes was 62 tails, 56 tails, 50 were seen during nine days of research. Whereas for banana peel fermentation with the number of mosquitoes trapped 27 seats which were seen for nine research days and experienced a decrease from day to day. These results show that cassava fermentation is the most effective as the attractant of mosquitoes, with the number of mosquitoes trapped during nine days of research 62 tails, with an average of trapped mosquitoes as many as three and effective on day 5 of the study.

Pengelolaan sampah medis di tempat-tempat layanan kesehatan sangatlah penting karena sampah medis memiliki berbagai risiko terhadap kesehatan bagi siapa saja, termasuk petugas kesehatan, pasien dan masyarakat. Perilaku petugas kesehatan seperti pengetahuan, sikap dan tindakan mempengaruhi bagaimana pengelolaan sampah medis di tempat layanan kesehatan. Penelitian ini bertujuan untuk mengetahui hubungan perilaku petugas kesehatan dalam pengelolaan sampah medis di Loka Rehabilitasi BNN Batam Tahun 2019. Penelitian ini merupakan penelitian kuantitatif dengan desain penelitian observasional analitik dengan pendekatan cross sectional. Populasi dalam penelitian ini adalah semua petugas kesehatan dengan jumlah sampel 32 orang. Cara pengambilan sampel menggunakan metode total sampling. Data diolah menggunakan SPSS dan dianalisa dengan uji chi-square dengan tingkat kepercayaan 95% (α=0,05). Hasil penelitian menunjukkan bahwa terdapat hubungan antara tindakan (p-value = 0,000) dan ketersediaan sarana (p-value = 0,002) dengan pengelolaan sampah medis dan tidak terdapat hubungan antara pengetahuan (p-value = 0,176) dan sikap (p-value = 0,148) dengan pengelolaan sampah medis di Loka Rehabilitasi BNN Batam Tahun 2019. Tindakan dan ketersediaan sarana merupakan variabel yang berhubungan dengan pengelolaan sampah medis di Loka Rehabilitasi BNN Batam Tahun 2019. Disarankan kepada pimpinan Loka Rehabilitasi BNN Batam untuk dapat melaksanakan pengawasan dan pembinaan secara terus menerus, memperhatikan ketersediaan sarana dan meningkatkan penanganan dalam pengelolaan sampah medis yang lebih baik.