Industri pemindangan ikan dalam proses pengolahannya  menghasilkan  limbah cair.  Limbah tersebut  langsung dibuang ke sungai, hal ini  dapat menyebabkan pencemaran lingkungan terutama bau akibat dari pembusukan protein.Kapasitasnya 150 m3 per-hari untuk 1 industri.   Limbah cair rebusan ikan pindang mengandung beban cemaran yang cukup tinggi, dengan nilai permanganat 15.073 ppm dan BOD 5.380 ppm.Pengolahan limbah cair dalam penelitian ini menggunakan sistem batch dan kontinyu yang diamati setiap hari selama 8 hari (hari ke 0, 1, 2, 3, 4, 5, 6 dan 7).  Hasil  penelitian menunjukkan penurunan nilai permanganat paling optimal terjadi pada hari ke 6 sebesar 4.266 ppm atau penurunannya sebesar 2.401 ppm , atau  36,01 persen untuk sistem batch.  Sistem kontinyu penurunan optimal pada hari ke-3 yaitu 5.906 ppm turun 13,47 persen.Jadi sistem batch lebih efektif daripada sistem kontinyu pada pengolahan limbah pindang dengan bakteri halofilik.  Nilai BOD terjadi penurunan yang signifikan, untuk pengolahan dengan sistem batch  secara keseluruhan nilai BOD sistem batch lebih rendah daripada sistem kontinyu.  Penurunan yang optimal pada hari ke-6menjadi 496 ppm terjadi penurunan sebesar 1.203 ppm atau 70,81 persen, sedangkan sistem kontinyu nilai BOD tidak terjadi penurunan .

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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.

Textile wastewater has the potential to contain high ammonia, especially from the printing process. Nitrification-denitrification becomes the focus of treatment for this pollutant so comes the main source of the inability of the WWTP to meet the quality standards. An electrocatalytic reactor consisting of a cylindrical Ti/RuO2 anode and a copper pipe cathode (Cu) has been applied as new alternative technology. The reactor capacity is made of 1 liter with a fixed distance between the electrodes of 2 cm. Potential voltage, salt content, and hydraulic retention time are parameters for variable operation. The reactor had a high performance where ammonia concentration can be reduced by 70% for HRT of 15 minutes and 100% for 30 minutes. The ammonia removal is not only affected by processing time but also by the potential electrode and salt concentration. The removal was obtained at a complete level (100%) in operating conditions where the salt content of 2000 mg/L, a voltage of 7 volts, and an HRT of 30 minutes. The ammonia removal rate follows reaction order 1 with k of 0.1679 dan R2 of 0.9369. The pathway of nitrogen transforming ammonia directly to gas nitrogen was not through other forms (nitrate or nitrite). This method is a high-promise to improve the performance of the textile industry WWTP.

Batik industry is one of textile industries in Indonesia generally in small and medium scale and has not good management of by-products in the form of wastewater. Wastewater from batik industry consist of complex and toxic pollutants hence need to be treated in order to support the development of environmentally friendly sustainable industry. Some researches have treated batik wastewater using conventional biological treatment such as anaerobic and activated sludge but optimal results have not been obtained. This research aims to develop a compact aerobic microbial granule with good endurance, which also rich in carbon and nutrient oxidizer bacteria to treat batik wastewater. Sequencing Batch Reactor (SBR) with volume of 8 L fed with Acetate (COD = 900-1000mg/L), then aerated for 180 minutes. Settling time variation was from 20 to 3 minutes, with 50% liquid withdrawal. In the 4 weeks operation there is increasing of MLVSS reached on 4760 mg/L with COD removal reach on 91,94%. The depletion of dissolved oxygen take effect on decreasing of MLVSS and COD removal.