Brown and Caldwell Home Page
Technical Papers RECENT PAPERS    ALL PAPERS

Brown and Caldwell engineers and scientists are technical and thought leaders in the environmental sector. Meet the people who have been advancing innovation for more than 70 years.
Author      Title/Abstract      


Is 'Zero Discharge' Realistic?
Author: Paula Diepolder
Date: 10/92
Reprinted from Hydrocarbon Processing, October 1992

At first glance, "zero discharge" (ZD)¾eliminating the discharge of any liquid waste to the environment¾seems like an idea of unqualified merit. It would be good for both the environment and any manager who achieves ZD. Let's go back to the definition, though. The key word is "liquid"¾ZD doesn't take into account solids. In fact, changing to a ZD operation ends up increasing the quantities of solids that have to be disposed. Disposal of solids¾those initially found in wastewater as well as those formed during the ZD treatment processing¾presents a significant environmental and financial liability of its own. In the past, this side effect has been enough to deter further consideration of this route. And the costs of equipment and energy necessary for achieving ZD are formidable. Why, then, is anyone even talking about ZD?

This library contains published materials for which copyrights may be owned by entities other than Brown and Caldwell, but which are stored for limited uses by BC employees. Technical papers authored by BC employees generally may be printed and shared electronically with clients and prospective clients outside BC. Technical papers cannot be sold, and technical papers shared outside BC must have proper attribution of the original sponsoring organization or conference where the paper was presented. This attribution is embedded in each technical paper file when it is loaded into this library. Published articles from magazines or trade journals which are stored in this library are FOR INTERNAL USE ONLY and SHOULD NOT be distributed to clients or others outside BC, without express permission of the copyright owner. For questions regarding copyrights associated with any document in this library, or questions regarding copyrights in general, contact the Legal Department.