Proven Success Stories
See how Spans Envirotech has delivered measurable results for leading companies across diverse industries. Our case studies demonstrate real-world performance, technical innovation, and commitment to environmental sustainability.
500+
Projects Completed
100%
Client Satisfaction
15+
Industries Served
30+
Years Experience
Browse by Industry
Explore Projects by Sector
See the breadth of wastewater we have treated across four industry groups — with in-depth case studies and a roster of delivered projects in each.
Food & Beverage Wastewater Projects
Food and beverage manufacturing produces some of the most concentrated organic wastewater in industry — biscuit and bakery lines a…
19 projects →Pharmaceutical & Healthcare Wastewater Projects
Pharmaceutical and healthcare wastewater demands a higher standard of care — API and formulation effluent carries variable, someti…
10 projects →Chemicals, Industrial, Power & Metals Projects
Heavy industry produces the most varied and demanding wastewater of any sector — metal-bearing finishing effluent, chemical and fe…
12 projects →Municipal, Infrastructure & Water Projects
Municipal and infrastructure water projects operate at civic scale — sewage treatment for townships and cities, water treatment pl…
14 projects →Client Success
Featured Case Studies
Explore detailed case studies showcasing our engineering expertise, implementation methodology, and measurable environmental impact.
Britannia Industries Limited
The Challenge
High-strength bakery wastewater with elevated organic matter, fats, oils, and grease causing inconsistent treatment performance and regulatory compliance issues.
95%
BOD Removal
40%
Water Reuse
60%
Footprint Reduction
Lotte India Corporation Limited
The Challenge
Complex confectionery wastewater with high sugar content and variable loading requiring robust treatment with water reclamation capabilities.
92%
COD Removal
35%
Water Recycled
100%
Compliance
Hindustan Unilever & GSK Consumer Healthcare
The Challenge
Pharmaceutical and healthcare product manufacturing wastewater requiring stringent quality control and trace contaminant removal.
98%
Contaminant Removal
Zero
Discharge Violations
50%
Water Savings
KRBL Limited
The Challenge
Existing treatment system upgrade needed to handle increased capacity while meeting stricter discharge standards for rice mill effluent.
3x
Capacity Increase
90%
BOD Removal
30%
Energy Savings
Devyani Food Industries Ltd.
The Challenge
Greenfield biscuit manufacturing facility requiring zero-discharge WWTP design for extremely high-strength process wastewater with COD up to 20,000 mg/L.
99%+
BOD Removal
100%
Water Reuse
261 m³/d
Treatment Capacity
Punjab Effluent Treatment Society for Tanneries (PETS)
The Challenge
5 MLD CETP for a tannery cluster generating extreme COD, chromium, sulphides, and TDS — requiring a five-stage design from chrome precipitation through to Zero Liquid Discharge.
5 MLD
Design Capacity
5 Stages
Treatment Architecture
ZLD
Design Objective
IFFCO International
The Challenge
Multi-stage ETP serving a large food manufacturing facility experiencing treated effluent TDS exceedances, elevated chemical consumption, and DAF floatation overload — requiring a systematic process audit and value engineering assessment.
7 Stages
Audit Coverage
Root Cause
TDS Identified
Dubai Mun.
Compliance Standard
London Dairy (IFFCO International)
The Challenge
Simultaneous ETP failures at a premium ice cream manufacturing facility — H₂S odour at 54–69 ppm from anaerobic equalization tanks and MBR flux reduced from 75 to 55 LMH by emulsified dairy fat fouling.
7 Stages
Diagnosis Coverage
H₂S 54–69 ppm
Odour Quantified
5 Technologies
Options Evaluated
Disha Foods Pvt. Ltd.
The Challenge
High-strength biscuit-line effluent (COD ~18,000 mg/L, BOD ~9,000 mg/L, FOG ~500 mg/L) treated together with communal sewage in a single 47 m³/day plant, engineered for on-site reuse via a value-engineered aerobic scheme.
47 m³/d
Design Capacity
COD 18,000→<200
Design Target
Reuse
Flushing & Gardening
Granules India Limited
The Challenge
Tripling ETP capacity (50→150 KLD) and lifting STP capacity (20→120 KLD) within the existing tank footprint — by converting the existing SBR to MBBR and re-purposing structures rather than building new.
50→150 KLD
ETP Capacity
20→120 KLD
STP Capacity
Asset Re-Use
Existing Footprint
Bharat Heavy Electricals Limited (BHEL)
The Challenge
Reconditioning and automating a 1 KLD physico-chemical ETP for turbine-blade metal-finishing effluent, engineered to PSU-grade UKPCB norms (total metals ≤10 mg/L) with stand-alone PLC operation.
1 KLD
Design Capacity
≤10 mg/L
Total Metals Target
Stand-Alone
PLC Automation
SJVN Thermal Township (Buxar)
The Challenge
A CPHEEO-compliant 335 KLD MBBR sewage treatment plant with a right-sized 120 KLD ultrafiltration polishing stream, engineered for reuse-grade water (TSS <5 mg/L) at a thermal-power township.
335 KLD
Design Capacity
120 KLD UF
Tertiary Polishing
TSS <5 mg/L
Reuse Target
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