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The model relationship of wastes for parameter design with green lean production of fresh water

A fresh water industry, serving the region of Banjarbaru and Banjar district with 62,205 customers in total by the end of 2015, has a service scope about 55% under the national target, which is 68%, and also the UN MDGs (Millennium Development Goals) target, that is 80% with NRW (non revenue water) average of 29%. The result of sedimentation is small water particles mixed with mud that is expelled 15 m3·day–1 as a result of production process with the capacity of 250 l·s–1. By seeing the condition above, an upgrade of production and service for customer by repairing/minimizing waste in the production process is needed. Identifying waste requires certain model that can ease and simplify the problem search process and it can be done by waste relationship matrix (WRM). The advantages of this model are the simplicity of its matrix and the questionnaire that is able to cover many things and give contribution to gain an accurate result in identifying the root cause of waste Rawabdeh (2005). Lean is a continual effort to eliminate waste and increase the value adding by cutting unnecessary things so that it can give good customer value and make the process become fl exible (easy to change). Researchers observed that lean manufacturing is a must and an integral part of the manufacture principles around the world, including fresh water industry over the past few decades. In this part, lean is production principles applied most by companies that allows Scientifi c Review – Engineering and Environmental Sciences (2017), 26 (4), 481–488 Sci. Rev. Eng. Env. Sci. (2017), 26 (4) Przegląd Naukowy – Inżynieria i Kształtowanie Środowiska (2017), 26 (4), 481–488 Prz. Nauk. Inż. Kszt. Środ. (2017), 26 (4) http://iks.pn.sggw.pl DOI 10.22630/PNIKS.2017.26.4.46

Pengaruh Fraksi Volume Serat Kayu Gelam (Melaleuce Leucandendra) terhadap Kekuatan Tarik dan Impak Komposit Bermatrik Polyester

The purpose of this research is to find the effect of volume fraction variation of “gelam” bark fiber on tensile and impact strength of polyester composite. The filler material was the “gelam” bark fiber with volume variation ratio of 10%, 30 %, 50 % and 70 %. Alkalization of the “gelam” bark fiber used 5% of NaOH and 2 hours of soaking time. Mechanical testing was carried out by tensile and impact testing. The matrix for bonding the “gelam” bark fiber was polyester resin type 157 BTQN and 1% concentration of MEKPO catalyst. The mechanical properties are obtained from tensile and impact testing: The results of tensile testing; slowed the highest tensile strength of compositre with 70% of ‘gelam bark fiber was 15.623 MPa. The results of impact testing: obtained the highest impact strength in composete with 70 % percentage of ‘gelam’ bark fiber is 24.772 J.