Jin Zhong Pulp and Paper Mill -- Hefei, Anhui, China

Jin Zhong paper mill is located in Hefei (the capital of Anhui province). It was established in 1978. It presently has a workforce of 820 workers, including 48 persons having a technical background. Its annual production capacity is 75 000 tonnes. The mill operates eight paper machines producing low, medium, and high quality cardboard. The main raw material used at the mill is waste cardboard. Depending upon the level of quality targeted, some market softwood pulp is also used in the process. Fresh water entering the process comes from South Wee river and wastewater is discharged to the Er Shi Pu river. Jin Zhong paper mill mainly sells its products across Anhui province and to packaging plants located in neighbouring eastern provinces.

Jin Zhong mill is equipped with a wastewater treatment plant having a design capacity of 200 to 250 m³ per hour. It consists of a series of inclined screens followed by a settling tank and a primary clarifier. The treated effluent is discharged to a channel going to the Er Shi Pu river. The treated effluent is monitored for COD, SS, and pH by the local Environmental Protection Bureau (EPB) since the mill does not possess its own environmental monitoring laboratory. In general, the mill complies with the national standards except for COD which slightly exceeds the compliance level.

Jin Zhong paper mill has implemented twenty CP solutions. Out of these twenty solutions, three are no cost solutions, twelve are low cost, four are medium cost, and one is high cost.

CP Solution Number	Implemented CP solution	Category of Solution
1	Raw material (waste cardboard) sorting	No cost
2	Good housekeeping procedures	No cost
3	Process optimization	No cost
4	Coal blocks are now crushed to smaller size. Jin Zhong set up its own standard for coal.	No/low cost
5	Installation of a filter at the water inlet to prevent clogging	Low cost
6	Installation of two cyclone dust removal	Low cost
7	Reduction of consumption quotas pertaining to coal, electricity, and additives.	Low cost
8	White water recycling to the raw material feeder instead of using fresh water.	Low cost
9	Employees training – environmental protection awareness sessions and sessions pertaining to operations.	Low cost
10	Trimming of the paper roll is carefully monitored	Low cost
11	Training sessions for the managers	Low cost
12	Equipment maintenance	Low cost
13	Ashes from boilers are now sold to brick manufacturers	Low cost
14	Use of antiwear on compressors allowed to decrease the production cost by 3 yuan per ton of paper produced.	Low cost
15	Water from the vacuum pump is reused for paper roll trimming	Low cost
16	Addition of 10% talc to the pulp in workshop #7 & #8	Medium cost
17	Fibre recovery from the wastewater	Medium cost
18	Set up of a flotation unit allows to treat 50 000 tons of wastewater per year compared to 20 000 tons per year before the construction of this unit	Medium cost
19	Insulation of the steam pipes (5% energy consumption reduction)	Medium cost
20	Boilers replacement 10% energy saving	High cost

The Jin Zhong mill has established a CP program which is well balanced between management issues and manufacturing issues. The CP solutions that were implemented so far are numerous and diversified. This indicates that the various departments of the mill have been significantly involved.

The mill established ambitious environmental targets. Before the end of year 2001, the mill is planning to proceed with the implementation of some low to high cost solutions. The implementation of these future CP solutions are expected to lead to a further 3% reduction in raw material consumption as well as a 10% reduction of energy consumption.

Contact Name: Mr. Pen Yuanfung (General Manager)
Address: Hefei, Anhui
Phone number:(551) 453-4116
Fax: (551) 453-2820
Email: hfjzzy@mail.hf.ah.cn
Web Page: none