LongChenPaper

Waste Water Treatment

Longchen P&P cumulated nearly 40 years of professional waste water treatment techniques for papermaking waste water. Discharged water from each plant can stably reach national discharge standard.

Erlin waste water treatment Mill(deals with waste water on a daily capacity of 12,000 tons)

	Biogas recycle and reuse: In 2013, Erlin Mill established biogas recovery system and used biogas for power generation. This measure can reduce GHG emission and energy consumption. In 2021, average coal consumption of 16,000 kg can be reduced per day, equivalent to CO₂ reduction of 14,073 tons CO₂e/year.
	Environment protection and waste reduction: In 2013, Erlin Mill established anaerobic treatment equipment, which can reduce sludge volume of 60%. In 2014, the Company has made a breakthrough on the technique and become the first plant in Taiwan to recycle and reuse waste water and biological sludge. In 2019, the Company redesigned waste water treatment system and introduced advanced equipment for upgrade and renovation. 50% of the energy was conserved per day.
	Cost reduction and water resource conservation: With the waste water treatment technique, 50% of the amount of water use for papermaking can be reduced.

Pinghu waste water treatment Mill (deals with waste water on a daily capacity of 25,000 tons)

	In 2021, Pinghu Mill biogas recovery system, reducing 28,000 kg average coal consumption per day, equivalent to COCO₂ reduction of 22,980 tons COCO₂e/year.
	In 2018, Pinghu Mill was rated as “Water Conserving Company” by Zhejiang Provincial Water Resource Department.
	In 2012, Pinghu Mill was rated as “Clean Production” by Environment Protection Bureau of Pinghu City.
	Professional consultation and assistance on waste water treatment.

Wuxi waste water treatment Mill (deals with waste water on a daily capacity of 25,000 tons)

	In 2021, Wuxi Mill biogas recovery system, reducing an average of 27,200 kg coal consumption per day, equal to CO₂ reduction of 22,329 tons CO₂e/year.
	In 2020, Wuxi Mill completed system upgrading and enhance the COD of discharged water to below 40ppm, a decrease of 32,000 kg average coal consumption per day, equivalent to CO₂ reduction of 26,270 tons CO₂e/year.
	In 2018, Wuxi Mill was honored as “First Batch of Lead Runners for Water Efficiency” by Water Resource Bureau of Wuxi City.
	Wuxi Mill passed the review of “Clean Production” by Environment Protection Bureau of Wuxi City in 2012.
	In 2007, Wuxi Mill obtained the invention patent “Treatment methods for papermaking waste water” granted by National Intellectual Property Administration.
	In 2007, Wuxi Mill was rated as “Water Conversing Company” by Construction Department of Jiangsu Province.

Hubei waste water treatment Mill (deals with waste water on a daily capacity of 20,000 tons)

	In 2021, the Mill upgraded its anaerobic system. Biogas production volume was enhanced to 110,000m3/day, a decrease of 88,000 kg average coal consumption per day, equivalent to CO₂ reduction of 72,270 tons CO₂e/year.
	In 2016, RMB 80 million was invested for the project to adopt IC anaerobic biochemical + Fenton advanced anaerobic process.


Normal
Composition:	Supersaturated steam produced by wet desulfurization
Color:	White water vapor (Backlight or it looks gray on a rainy day)
State:	Water vapor exhausted from the chimney will quickly condense and dissipate when encountering the air, and the smoke column is very short (water vapor dissipates slower on rainy days, and the smoke column will be elongated)
Abnormal
Composition:	Smoke (Pollutant)
Color:	Black, light blue, reddish brown
State:	Smoke column elongated and do not dissipate along time