A unique solution for water & wastewater treatment for Indias leading dairy co

Challenge

A dairy research & development facility in Northern India uses two water sources (borewell and municipal) of varying quality. The plant needed a water treatment technology that could cater to both sources while meeting the following requirements:

One central interface with the system, including a single programmable logic controller (PLC) and human machine interface (HMI).
Treatment of wastewater with high chemical oxygen demand (COD) & biochemical oxygen demand (BOD) values.
Treated water can be reused.

Solution

SUEZ designed a solution based on the unique technical requirements of the facility.The plant can operate at two different water sources and offers two types of product water by suitable blending option.

The solution uses an ultrafiltration (UF) / reverse osmosis (RO) system to treat borewell/municipal water into process and utility water.

Municipal water is fed for phase 1 for 6 hours and phase 2 for 12 hours. The borewell water is fed for phase 1 for 10 hours and phase 2 for 20 hours. In both feeds, 162 m3/day flow will be directed towards the utility water tank and 17 m3/day will be used as process water in the plant. Further, the flow rate for municipal water is 38 m3/hr and 24 m3/hr for borewell water.

SUEZ’s ZeeWeed* 500D membrane bioreactor (MBR) technology treats the plant’s wastewater.The ZeeWeed MBR system can operate with the membranes directly in the bioreactor tank, drastically reducing the required plant footprint by eliminating the need for secondary clarifiers.

When municipal water is the feed:

When Borewell water is the feed:

Table 1: Project Summary

End user:	Dairy production
Location:	Northern India
Commissioned:	2012
Application:	Water treatment
Feed water source:	Borewell and municipal water
Feed water quality:	TDS <620 ppm="" (borewell);=""> <400 ppm="">
Product quality:	TDS 300-500 ppm (utility water); TDS <30 ppm="" (process="">
Capacity:	38m3/hr (municipal),24 m3/hr (borewell)
Technology:	SUEZ’s UF-RO system & MBR

Results

After commissioning,the SUEZ solution treated municipal and borewell water to meet the requirements of the customer.TDS of the product water was 300-500 ppm for the utility water and less than 30 ppm for the process water. Turbidity was less than 0.5 NTU in both water flows.

With the use of ZeeWeed 500D MBR, the COD and BOD values in the wastewater were drastically reduced and the treated wastewater was reused as process water.

To learn how SUEZ can help you solve your waste water challenges, contact SUEZ representative or visit us at www.suezwatertechnologies.com