Produksi sampah plastik di Indonesia mencapai 5.4 juta ton per tahun. Berdasarkan data statistik persampahan domestik Indonesia jumlah sampah plastik tersebut sebesar 14% dari total produksi sampah di Indonesia. Pemanfaatan sampah plastik telah dilakukan dengan cara membuat kerajinan, aspal, dan berbagai produk lainnya. Namun penggunaan plastik untuk produk kerajinan tidak menyelesaikan masalah karena pada satu saat produk tersebut akan rusak dan kembali lagi menjadi sampah. Maka dari itu di perlukan suatu teknologi yang dapat mengubah plastik menjadi produk yang berumur lama sehingga tidak kembali menjadi sampah dalam waktu yang singkat. Penggunaan sampah plastik untuk paving block merupakan salah satu solusi untuk mendaya gunakan plastik dalam jangka waktu yang lama. Demikian juga dengan penggunaan sampah dari botol plasti menjadi eco-brick. Pemberdayaan masyarakat untuk mengolah sampah plastik menjadi sesuatu yang berguna dalam jangka waktu yang lama adalah salah satu kunci keberhasilan program daur ulang limbah plastik. Maka dari itu dilakukan pelatihan dan pendampingan masyarakat dalam memanfaatkan sampah plastik sehingga menjadi sesuatu yang berguna. Dari hasil kegiatan ini warga kampung Tulung khususnya RW 2 mampu mempraktekkan pembuatan paving block dan eco-bricks. Selanjutnya Ecobricks ini akan digunakan untuk pembangunan fasilitas-fasilitas ruang publik dan ruang terbuka hijau. Sedangkan Pembuatan paving berbahan plastik akan ditindak lanjuti dengan melakukan konsultasi dengan Dinas Perindustrian Kota Magelang.

<span>The water demands for agricultural purposes are increasing along with the population growth. Unfortunately, the water source is not sufficiently available nowadays. Furthermore, the quality of available water is more deteriorated due to the contamination from many sources such as households, industrial areas and other activities. Water board Scheldestromen handles 16 wastewater treatment plants located in Province of Zeeland in The Netherlands. The total production of treated effluent water from 16 wastewater treatment plants is 50 million annually. Quality of the effluent is relatively good, however, some potential risks related to the number of pathogenic microorganism and some trace metals are still there. The treated effluent is mostly discharged to river near to the treatment plant. The high amount of effluent discharge would potentially to be re-used for fulfill the demand for agricultural water. Therefore, this study aims to evaluate the feasibility of treated effluent from one of Walcheren wastewater treatment plants located in Ritthem, Province of Zeeland.</span><span>This study uses the method of Multi Criteria Analysis (MCA) for looking the best way to re-use the effluent for agricultural purposes. The MCA questionnaire was developed based on the thorough literature review of effluent reuse. There are 6 criteria that need to be weighted and 6 scenario alternatives that need to be scored for the MCA questionnaire. The result show that the effluent water contained pathogenic bacteria (E.Coli) and some trace metals (Ni and Cu) more than suggested by FAO standard. Hence the most preferred technology is combination between closed conduits and UV system, with weighted score 0.78 while others had less weighted score compared to the selected one</span>

Batik coloring still uses synthetic dyes, so the disposal of coloring waste should not be careless. Most batik craftsmen process their batik waste by settling the waste liquid for a long time. The process is very ineffective. The purpose of this research is to design a batik processing tool that is cheap and effective. The research method uses the electrocoagulation method. The electrocoagulation method is an electrochemical water treatment. The design of this batik waste treatment tool consists of five parts including: (1) Electrocoagulation Tub, (2) Skimmer, (3) Electrode, (4) Sand Filter, and (5) Studge Drying Bed. This tool works with 900 watts of power with an output of 20-40 volts DC. The capacity of liquid waste is 50 liters. Duration of waste treatment for 2 hours. The electrocoagulation method is able to reduce the values of BOD5, COD, TSS, and TDS in batik dye waste. The pH of wastewater which is still high can be reduced by giving alum.