No abstract

Industri tekstil sebagian besar menggunakan mengolah limbah cair pada instalasi pengolahan air limbah dengan menggunakan sistem fisika, kimia, dan biologi. Sistem biologi yang digunakan biasanya adalah lumpur aktif yang terkadang mengalami gangguan. Tujuan penelitian ini adalah membuat konsorsium mikrobia terpilih yang dapat menaikkan kinerja lumpur aktif yang sedang terganggu, diindikasikan dengan turunnya nilai sludge volume dalam reaktor lumpur aktif serta menurunkan COD air limbah terolah. Terpilih 6 (enam) jenis bakteri non patogen yaitu Bacillus macerans, Bacillus subtilis, Bacillus thuringiensis, Bacillus sp, Kurthia zopfii,dan Pseudomonas stutzeri untuk digabungkan dalam satu konsorsium. Hasil uji antagonisme antar species terpilih menunjukkan tidak munculnya zone penghambatan, sehingga 6 (enam) jenis bakteri tersebut dapat digabungkan menjadi satu kesatuan.Hasil uji coba laboratorium menunjukkan konsorsium yang ditambahkan nutrien berupa 25 gr bekatul dan 50 gram gula per liter air dengan pencapaian sludge volume 30 menit 85% dan setelah diendapkan 24 jam adalah 35% denganpenurunan COD 82% Uji coba lanjutan menunjukkan bahwa konsorsium dalam 6 jenis bakteri ditambah Nitrobacter dan yeast sludge volume 30 menit terbaik mencapai 73% setelah diendapkan 24 jam menjadi 32% dengan penurunan COD mencapai 81%.

In this study, performance of Upflow Anaerobic Sludge Bed and Electrocoagulation-flotation (ECF) reactors treating corrugated cardboard industry wastewater was evaluated under different operating conditions. The UASB unit was initially acclimated to wastewater for 7 days, and the use of two types of substrates, sugar and starch, was investigated. Continuous operation of UASB was then conducted under different OLR and constant HRT (24 h). The ECF process with Al and Fe anodes was applied after UASB on varied pH and time of electrolysis. Acclimatizaton stability of UASB unit using starch substrate reached a higher efficiency, compared to sugar substrate. Steady-state was reached after 6 days operation at OLR of 25 kg COD/m 3 day. Continuous operation of UASB was able to reach 94% of COD removal efficiency at 24 h HRT. ECF process was then carried out, with COD removal efficiency ranging from 70 to 81%. The optimum pH of ECF process was 7.5 and 6 or 9 for Al and Fe anode, respectively. Increasing time of electrolysis largely influence COD removal efficiency for Fe anode, however, a significant increase was not observed for Al anode. Sludge produced was about 4 kg/m 3 and 5 kg/m 3 for Al and Fe anode, respectively, with energy consumption cost ranged between 4.5 to 18 kWh/m 3 and electrode consumption was 0.17 Kg Al/m 3 and 0.515 Kg Fe/m 3. The result of this study indicated that the integrated method of UASB and ECF could be applied as an effective treatment for corrugated cardboard industry wastewater.

This research aimed to evaluate the implementation of integrated Upflow Anaerobic Filter (UAF)-Constructed Wetlands (CWs) in real condition of wastewater treatment plant in batik small scale industry. The full scale reactor consisted of equalization chamber with HRT of 2 days; Upflow Anaerobic Filter (UAF) with HRT of 6 days, and Horizontal Subsurface Constructed Wetlands (HSSCWs) with HRT of 1.5 days. The UAF- CWs integrated technology was used to treat batik wastewater with  COD inlet of  1339 – 2034 mg/L and pH  of  9.0 – 9.4. This study showed that single UAF technology alone was able to reduced  56 – 78%, while the integration UAF –wetland technology  improved the performance to 85% and reduced the pH into 7.5 – 7.8.

A rapid catalytic process with low energy requirements gives catalytic ozone the potential to treat industrial textile wastewater in a full-scale application. However, until today, this catalytic ozone technology remains energy-consuming and, as a consequence, expensive. Thus, to overcome the bottleneck related to energy needs, this research aims to design a continuous mode reactor design to treat industrial textile wastewater through catalytic ozone, which integrated solar power plants (PLTS). In this work, a constant mode reactor design combined with an integrated sensor is investigated for industrial textile wastewater. Combining the autonomous and continuous removal of the impurities makes this continuous mode reactor excellent for the treated wastewater on the industrial textile scale.