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Project on the investigation and evaluation of waste disposal technologies in both the printing and dyeing, and pigments and dyes manufacturing industries

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The list of achievements accomplished in this project for both the printing and dyeing and the pigments and dyes manufacturing industries are as listed below: 1) Evaluation and analysis of the reported data on the production of waste in the past 3 years (2002-2004) with reference to the information collected during onsite investigation 2)The inadequacy of the existing manufacturing process code has led to the unsatisfactory accuracy of the reported data. As much as 67.3% of the business operators has difficulty selecting the appropriate code and chosen the code of 1050-099 which stands for “other printing and dyeing processes”. Therefore the revision of the manufacturing process code, which is primarily the changing of name and addition of new codes, has been suggested. 3) Compilation of table mapping the raw materials required and the waste produced in each processing unit, with relation to the existing manufacturing process codes. 4) Through the sampling and testing of waste within the industry, it was discovered that the sludge tested has managed to pass the TCLP test are therefore considered as non-hazardous, however the ICP test show 5 of the samples failed to pass the heavy metal content in the “Soil restriction .standard” and the “fertilizer specification” in the “fertilizer management standard, which means extra attentions is required in the recycling and reuse of such wastes. 5) Investigations on wastes associated with the industry or large in quantity such as are sludge, coal ashes, waste wood, waste fiber, dimethyl-formamide (DMF), waste solvents, are carried out to examine the legitimacy and suitability on the recycling and reuse of such wastes followed by the recommendation in the promotion of zero-waste and management related policies.
Keyword
Printing and dyeing industry(1050),Pigments and dyes manufacturing industry,sludge,textile sludge,DMF,Coal ash,Recycling,reuse
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