WAM Thailand Supplying NOBEL WWT Plant

Alternative Waste Water Treatment in South East Asia

NOBEL N.C. Thailand Co. Ltd., a Thai-Japanese joint venture, specialise in the production of nitrocellulose for use in lacquer for wood, paper coating, printing ink, aircraft lacquer, aluminum foil coating and others.

The amount of water used in production of nitrocellulose is very high. So is the degree of pollution of the water.

Before being introduced into a nearby river it has to undergo a purification process during which its pH value is drastically reduced.

The management at NOBEL N.C., who are very concerned about environmental issues, decided on an alternative treatment of their waste water to the traditional addition of chemicals like lime and poly electrolyte.

They opted for a biological bacteria breeding process where starch is introduced into the waste water using WAMGROUP® equipment for storage, discharging, dust filtration and feeding of the powdery material.

The starch comes in Bulk Bags. After being discharged by means of an SBB-type FIBC Discharger, it is filled into a silo through a dilute-phase pneumatic conveying system. To facilitate discharging the starch from the silo, which is equipped with TOREX® Rotary Level Indicators and a VCPtype Pressure Relief Valve by WAM®, a BA-type Bin Activator by EXTRAC® is fitted on the silo outlet cone. A tubular TU-type Screw Feeder by WAM® guarantees an accurate feed rate while the material is introduced into the water tank.

Starch dust is collected by a WAMAIR® Polygonal Dust Collector. The customer is reported to be extremely satisfied with the process and the equipment.