The textile dyeing industry is one of the leading sources of industrial wastewater pollution in the world. Dyeing wastewater is a mixture of materials and chemicals used in the procedures of printing and dyeing. The water often contains high concentrations of organics with great pH variation and the flow and water quality display enormous discrepancy. As a result, this kind of industrial wastewater is hard to handle. It gradually damages the environment if not properly treated.

A notable textile mill in Guangzhou can offer a sewage processing capacity of up to 35,000m3 daily. By adopting the contact oxidation method, it can provide high sludge output but low solid content. Thus, pre-concentration is needed prior to the dewatering process. This company bought three HTB-2500 series rotary drum thickening-dewatering belt filter presses from our company in April, 2010. Our equipment has so far operated smoothly, thereby earning high praise from the customers. It has also been recommended to other clients in the same industry.

A customer from Mauritius immediately purchased a HTB3-1250 series belt filter press from our company after paying us a visit in 2011. This machine was successfully installed and commissioned in December, 2011. To date, the machine has been operating without fault.