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Industrial Wastewater COD Degradation Technology – Taiwan Solar Cell Plant
Author(s) -
Lai KunCheng,
Wen JetChau,
Chen WeiTing,
Chen ChiouMei,
Huang ShaoYang,
Shen ShuMin,
Shu ChiMin
Publication year - 2016
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201400403
Subject(s) - wastewater , environmental science , photovoltaic system , effluent , sewage treatment , pollutant , chemical oxygen demand , industrial wastewater treatment , waste management , environmental engineering , pulp and paper industry , engineering , chemistry , electrical engineering , organic chemistry
The energy crisis has led to continuous cost increases for petroleum, and global climate change has exacerbated the environmental crisis. To cope with the energy crisis, many industrially developed countries have promoted photovoltaic cells as the most promising green energy alternative. However, their manufacture produces enormous amounts of pollutants that significantly impact the environment. To balance green energy and the environment, the manufacturing processes of photovoltaic cells should be environmentally benign. Therefore, a proper pollution prevention management strategy and control technologies should be developed accordingly. To adapt the growth of photovoltaic cell industries in Asia to the global green trend and contribute to environmental protection, we focused on the treatment of wastewater from plants producing photovoltaic cells. A biotechnology process was used to culture microorganisms based on wastewater characteristics from photovoltaic industries. This biotreatment system was integrated with anerobic and aerobic biotreatments, which not only are capable of treating high chemical oxygen demand (COD) concentrations in influents but also can remove nitrate nitrogen. This process is able to remove more than 85% of the COD from influent streams. The advantages are that less sludge produced, less space required, and operating costs are lower. This study successfully established an in situ pilot plant capable of treating influent COD concentrations of 3000 mg L −1 and producing effluent COD concentrations of 100–400 mg L −1 . The COD removal ratio was about 70–85% and can serve as a model reference for practical industrial treatment.