Textile Wastewater Reuse: Ozonation of Membrane Concentrated Secondary Effluent

1999 ◽  
Vol 40 (4-5) ◽  
pp. 99-105 ◽  
Author(s):  
A. Lopez ◽  
G. Ricco ◽  
R. Ciannarella ◽  
A. Rozzi ◽  
A. C. Di Pinto ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Acute Toxicity ◽  
Wastewater Treatment Plant ◽  
Textile Industry ◽  
Nonionic Surfactants ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Textile Wastewater ◽  
Secondary Effluent ◽  
Complete Disappearance

Among the activities appointed by the EC research-project “Integrated water recycling and emission abatement in the textile industry” (Contract: ENV4-CT95-0064), the effectiveness of ozone for improving the biotreatability of recalcitrant effluents as well as for removing from them toxic and/or inhibitory pollutants has been evaluated at lab-scale. Real membrane concentrates (pH=7.9; TOC=190 ppm; CDO=595 ppm; BOD5=0 ppm; Conductivity=5,000 μS/cm; Microtox-EC20=34%) produced at Bulgarograsso (Italy) Wastewater Treatment Plant by nanofiltering biologically treated secondary textile effluents, have been treated with ozonated air (O3conc.=12 ppm) over 120 min. The results have indicated that during ozonation, BOD5 increases from 0 to 75 ppm, whereas COD and TOC both decrease by about 50% and 30 % respectively. As for potentially toxic and/or inhibitory pollutants such as dyes, nonionic surfactants and halogenated organics, all measured as sum parameters, removals higher than 90% were achieved as confirmed by the complete disappearance of acute toxicity in the treated streams. The only ozonation byproducts searched for and found were aldehydes whose total amount continuously increased in the first hour from 1.2 up to 11.8 ppm. Among them, formaldehyde, acetaldehyde, glyoxal, propionaldehyde, and butyraldehyde were identified by HPLC.

scholarly journals Tertiary Physico-chemical Treatment of Secondary Effluent from the Chania Municipal Wastewater Treatment Plant

2013 ◽  
Vol 9 (2) ◽  
pp. 166-173
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Chemical Treatment ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Secondary Effluent ◽  
Municipal Wastewater Treatment ◽  
Municipal Wastewater Treatment Plant ◽  
Physico Chemical ◽  
High Doses

The present study investigated tertiary physico-chemical treatment of the secondary effluent from the Chania municipal Wastewater Treatment Plant (WTP). Laboratory experiments were carried out with the aim of studying coagulation efficiency regarding reduction of turbidity, soluble COD and phosphorus both in a conventional Coagulation-Settling treatment scheme, as well as by means of Contact Filtration. The results showed that high doses of coagulants (0,5 mmol Me+3 l-1 or higher) are required to achieve significant removals of turbidity after settling. At these high doses, soluble COD can be removed by about 50%, while soluble Phosphorus by 80-95%. Ferric Chloride demonstrated slightly better removal ability as compared to Alum. The Chania WTP effluent was also treated by Contact Filtration, using a very low dose of coagulants, 0,1 mmol Me+3 l-1. Turbidity was removed by around 50%, while at this low coagulant dose removals of COD and Phosphorus were insignificant. Filtration was effective in the first 35cm of the filter bed. No significant differences were observed between the coagulants Alum and FeCl3 in the elimination of turbidity. Nevertheless, with the use of Alum a smaller filter headloss was observed, during the first two hours of continuous filtration, in comparison with the use of FeCl3 (nearly double). No difference was observed between the headloss developed at a filter depth of 5cm as compared to that developed at a depth of 70cm. This indicates that the headloss increase was due to the accumulation of suspended and colloidal solids within the first layers of the sand filter.

scholarly journals Analisis Sistem Pengelolaan Limbah B3 Di Industri Tekstil Kabupaten Bandung

2021 ◽  
Vol 5 (1) ◽  
pp. 15-26
Author(s):  
Eka Wardhani ◽  
Dea Salsabila
Keyword(s):  
Wastewater Treatment ◽  
Fly Ash ◽  
Wastewater Treatment Plant ◽  
Textile Industry ◽  
Treatment Plant ◽  
Hazardous Materials ◽  
Used Oil ◽  
Dangerous Substances ◽  
Materials Used ◽  
Engine Maintenance

ABSTRAKPenelitian ini bertujuan untuk mengetahui pengelolaan LB3 yang telah dilakukan di indsutri tekstil. Metode penelitian menggunakan metode perbandingan antara kondisi di lapangan dengan peraturan yang berlaku. Berdasarkan hasil evaluasi mengenai pengelolaan LB3 yang dilakukan oleh PT X dapat disimpulkan beberapa hal yaitu sumber LB3 berasal dari proses produksi, lumpur IPAL, boiler, labolatorium, pemeliharaan mesin, dan klinik. Jenis LB3 yang dihasilkan berasal dari sumber spesifik umum yaitu lumpur IPAL dan limbah medis, sumber spesifik khusus yaitu hanya fly ash dan sumber tidak spesifik yang meliputi lampu TL, drum bekas LB3, oli bekas dan reagen. Karakteristik LB3 terdiri dari beracun, mudah menyala, korosif dan infeksius. PT X telah melakukan pengelolaan LB3 yang meliputi aspek pengemasan dan pewadahan, pengumpulan, penyimpanan, pengangkutan dokumen pengelolaan LB3, dan pelabelan LB3. Untuk kegiatan pengangkutan PT X bekerja sama dengan pihak ketiga diantaranya adalah PT Hijau Lestari, PT PPLI, PT Khalda, dan WGI. Berdasarkan hasil analisis pengelolaan LB3 di perusahaan ini termasuk kategori baik. Upaya pengelolaan LB3 yang harus ditingkatkan yaitu pada proses pelekatan simbol dan label, pengemasan, dan penyimpanan LB3.Kata Kunci: Kabupaten Bandung, Industri Tekstil, Limbah B3,ABSTRACTThis study aims to determine the management of LB3 that has been carried out in the textile industry. The research method uses a comparison between conditions in the field and applicable regulations Based on the evaluation results on the management of hazardous materials carried out by PT X, it can be concluded several things, namely the source of hazardous materials originating from the production process, sludge from the wastewater treatment plant, boilers, laboratory, engine maintenance, and clinics. The types of hazardous materials produced come from general specific sources such are sludge from the wastewater treatment plant and medical waste, specific sources which are fly ash and non-specific sources which include lamps, drums used in hazardous materials, used oil and reagents. The characteristics of hazardous materials consist of toxic, flammable, corrosive, and infectious. PT X has managed the management of hazardous materials which includes aspects of packaging, storage, collection, storage, transportation of documents on the management of hazardous materials, and labeling of hazardous materials. For transportation activities, PT X cooperates with third parties including PT Hijau Lestari, PT PPLI, PT Khalda, and WGI. Based on the analysis the achievement of the management of dangerous substances in this company including the good category. Efforts to manage toxic and hazardous materials must be improved in the process of sticking symbols and labels, packaging, and storing toxic and hazardous materials.Keywords: Bandung Regency, Testile iIndustry, hazardous waste materials

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