Tiandu Pulp and Paper Mill -- Fuyang, Anhui, China

Tian Du pulp and paper mill is located in Fuyang city which is approximately 375 km to the north west of Hefei, the capital of Anhui province. The mill is a town-owned enterprise established in 1988. It presently (2001) has a workforce of 645 workers. The mill operates four paper machines producing medium to high strength corrugated paper. The main raw materials used at the mill consist of domestic waste paper and straw pulp which is produced on site. Groundwater is used in the process. Its annual production capacity is of 35 000 tons. The mill sells its products to customers based in Jiangsu, Zhejiang, and Anhui provinces as well as in Shanghai.

Tian Du mill is equipped with a biological wastewater treatment plant having a design capacity of 250 m³ per hour. It consists of primary and secondary clarifiers and an aeration basin. The treated effluent is monitored for COD, SS, and pH on a daily basis at the mill’s environmental laboratory. The Local Environmental Protection Bureau (EPB) reviews their environmental data on a monthly basis. The treated effluent is discharged to a tributary of the Huai He river. During the period January-March 2001, the mill appeared to have complied with the national standards.

The mill started to implement cleaner production in May 1996. Since then, several Cleaner Production solutions have been implemented. For example, the biological wastewater treatment plant was upgraded and a black liquor evaporation system was built. So far, seventeen CP solutions have been implemented at the mill. Out of these seventeen CP solutions, seven are no cost solutions, seven are low cost, two are medium cost, and one is a high cost solution.

CP Solutions Number	Implemented CP solution	Category of Solution
1	Raw material purchasing and storing is now organized to suit the need of the mill.	No cost
2	Tasks to be performed by the personnel are now clearly defined.	No cost
3	Employees are evaluated based on a reward system.	No cost
4	The speed of the two modules of the straw feeder were adjusted to the same speed. This modification allows to recuperate the dust at the intersection of the two modules.	No cost
5	Steam injection during digesters filling.	No cost
6	Kappa number was changed from 45-55 to 50-60.	No cost
7	Pressure was changed from 7 atm to 5 atm	No cost
8	Deeper groundwater intake	Low cost
9	White water recycling via one pump	Low cost
10	Black liquor extraction using higher efficiency equipment	Low cost
11	Change in cooking additives – NH₄Na₂SO₃ instead of MgO	Low cost
12	Installation of a mixer for chemical additives	Low cost
13	Addition of a calender	Low cost
14	Felt adjustments on the paper machine	Low cost
15	Construction of a clarifier in order to enhance white water recycling.	Medium cost
16	Automated pulp consistency control	Medium cost
17	Construction of a black liquor evaporator line	High cost

Over the past five years, Tian Du mill has invested an important sum of money in environmental equipment. Even with a CP program in place, this equipment would have been required. The CP program allowed the mill to achieve environmental and financial goals in shorter periods of time than before. With a closer look at the type of CP solutions put in place lately, it seems that the idea of reduction at source through innovative, simple and inexpensive solutions is moving forward.

Contact name: Mr. Hao Cui Chang (General manager)
Address: Fuyang, Anhui
Phone number: (0558) 130-1407-6888
Fax: (0558) 417-1024