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CHAPTER 9

An Introduction to Biological

Treatment and Successful

Application of the Aqua EMBR

System in Treating Effluent

Generated from a Chemical

Manufacturing Unit: A Case Study

2
1
Nilesh Tantak , Nitin Chandan , Pavan Raina 2
1
Aquatech Systems (Asia) Pvt. Ltd., Pune, India
2
AMP Technologies (A Division of Aquatech Systems Asia Pvt. Ltd.), Pune, India
9.1 INTRODUCTION

Scarce freshwater resources and rapidly deteriorating quality of water
resources because of the discharge of untreated or noncompliant treated
wastewater are the prime compelling reasons for industries to adopt new
and advanced technologies for treating their effluent, not only to meet
stringent discharge standards but also to possibly recycle it for various uses
within the plant area. The complex question facing the authorities is up
to what levels of treatment must be achieved in a given application
and beyond those prescribed by discharge permits to protect public health
and environment. Based on detailed analysis of local conditions and needs
and the application of scientific knowledge and engineering judgment based
on past experience, various methods are employed for treatment of waste-
water. These may be physical, chemical, biological, or advanced methods for
tertiary treatment. On one hand, it is regulatory drivers that are pushing
for maximizing wastewater treatment and reuse, but on the other hand,
industry is also taking proactive initiatives to implement wastewater treat-
ment and recycling projects. A wastewater treatment system (as shown in
Figure 9.1) is generally comprised of:
1. Primary treatment
2. Secondary treatment
3. Tertiary treatment.

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