In addition to copper | PCB electronics factory in Nanjing Wastewater Treatment Case Study _ Weak Promise customer information (with clients) Main business: PCB watery Source: Integrated water waste: 70 tons a day of the original treatment process: breaking the network agent sodium sulfide + + Activated carbon Average PH: 2.0 4.0 10.4 Heavy Metal: The main initial concentration of heavy metals copper: 100mg / L effluent standard: Cu <0.5mg / L Weak Promise _ raw water sample index data blue cloudy appearance PH 9.7 Cu copper concentration 7.7mg / L sample volume 1L Promise _ Weak experimental records: 1, raw water PH = 9.7, filtered and the filtrate measured Cu = 1.45ppm 2, the filtrate was added 10ppmRS100 reaction 5min 3, adding 100ppm PAC and 5ppmPAM 4, 5 precipitation as right after 10min, The supernatant was measured PH = 8.8, Cu = 0.08ppm Promise _ Weak pharmaceutical usage and water quality results: the name of the mass concentration of pharmaceutical dosage of NaOH 20% 0ml / L RS100 2% 0.5ml / L PAC 2% 5ml / L PAM 0.1% 5ml / L (supernatant copper concentration: 0.08 Mg / L supernatant PH = 8.8) _ Weak Promise mentoring program: 1, NaOH, RS100, PAC, PAM 2, with NaOH to adjust the raw water PH 9 Xu Ning precipitation PAM plus 3, the supernatant was added 10mg / L RS100, the reaction was stirred 10min 4, adding 100mg, L PAC, quickly stir 5, adding 5mg / L PAM, slowly stirring 30min after mixing Weak precipitation Promise - Economy Cost analysis: the cost of processing water samples: Drug Price dosage (kg / t) price (/ dollar) NaOH 3 元 / kg 0kg / t 0.0 PAC 2 元 / kg 0.1kg / t 0.2 PAM 30 元 / kg 0.005kg / t 0.15 RS100 35 元 / kg 0.01kg / t 0.35 0.7 tons of water costs 

keywords: Recapture agents, phosphorus, flocculants, broken cyanide agents,