Phone: +91 9811561063
Email: meridianmicro05@gmail.com
Sewage Treatment Plant (STP) Installation in Faridabad - Meridian Micro Technology
Meridian Micro Technology designs, installs, and maintains sewage treatment plants (STPs) for residential complexes, commercial buildings, hotels, hospitals, and industrial facilities across Faridabad, Delhi NCR, and India. Our CPCB-compliant STP systems treat domestic wastewater to remove 95%+ BOD, COD, and suspended solids, producing treated water safe for reuse in gardening, cooling towers, and flushing. With 30+ years of experience and 300+ successful installations, we deliver end-to-end sewage treatment solutions from design to commissioning and annual maintenance.
What is a Sewage Treatment Plant (STP)?
A sewage treatment plant (STP) is a wastewater treatment facility that processes domestic sewage from toilets, bathrooms, kitchens, and laundries. STPs use a combination of physical, biological, and chemical processes to remove organic matter, suspended solids, pathogens, and nutrients from wastewater before it is discharged or reused.
The primary goal of an STP is to produce treated water (effluent) that meets Central Pollution Control Board (CPCB) discharge standards and can be safely released into municipal drains, water bodies, or reused for non-potable applications like irrigation, toilet flushing, and cooling tower makeup.
Key STP Treatment Process - 4 Stages
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Preliminary Treatment (Screening & Grit Removal): Raw sewage passes through coarse screens and grit chambers to remove large solids (plastic, cloth, paper), sand, and gravel that could damage pumps and equipment.
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Primary Treatment (Sedimentation): Wastewater flows into a primary clarifier where heavy suspended solids settle to the bottom as sludge, and floating materials like oils and grease are skimmed off the surface.
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Secondary Treatment (Biological Treatment): This is the core of the STP. Wastewater is treated using aerobic bacteria that consume organic matter (BOD/COD). Common technologies include:
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MBBR (Moving Bed Biofilm Reactor) - Most popular for compact spaces
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Activated Sludge Process (ASP) - Traditional method
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MBR (Membrane Bioreactor) - Highest quality output
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SBR (Sequential Batch Reactor) - For variable flow applications
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Tertiary Treatment (Disinfection & Filtration): Final treated water passes through sand filters and UV/chlorine disinfection to remove remaining pathogens, making it safe for reuse or discharge.
Why Your Property Needs a Sewage Treatment Plant
Mandatory CPCB Compliance
Under CPCB regulations and local municipal laws:
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All residential complexes with 50+ apartments must install an STP
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Commercial buildings above 5,000 m² built-up area require STPs
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Hotels, hospitals, malls, IT parks - mandatory regardless of size
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Industrial facilities generating domestic sewage must treat it separately from process wastewater
Penalty for non-compliance: Fines ranging from ₹50,000 to ₹5 lakh, legal action, and potential closure orders.
Installing a CPCB-compliant STP protects your property from legal issues and ensures smooth occupancy certificate (OC) approval.
Reduce Water Bills by 30-50%
Treated water from your STP can replace freshwater for:
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Toilet flushing (30-40% of total water use)
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Gardening and landscaping (10-15%)
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Cooling tower makeup water (for commercial properties)
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Car washing and floor cleaning
For a 200-apartment complex using 80,000 liters/day, reusing treated water saves ₹5-8 lakh annually on municipal water bills.
Protect the Environment
Untreated sewage discharged into drains or water bodies causes:
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Groundwater contamination - Seepage of untreated sewage pollutes underground aquifers
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Foul odors - Decomposing organic matter produces hydrogen sulfide and ammonia
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Disease spread - Pathogens like E.coli, cholera, and hepatitis viruses enter the water supply
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Ecosystem damage - Excess nutrients (nitrogen, phosphorus) cause algal blooms that kill aquatic life
An STP removes 95%+ of these pollutants, protecting both public health and the environment.
Increase Property Value
Properties with functional STPs command higher prices because:
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Buyers prefer eco-friendly, self-sustainable buildings
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Lower operational costs (water savings)
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No risk of municipal fines or legal issues
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Ready occupancy certificate (OC) - no delays
Real estate developers report a 10-15% premium on properties with pre-installed STPs in Delhi NCR.
STP Technologies We Offer
Different properties have different space constraints, flow patterns, and treatment requirements. We design STPs using the best technology for your specific needs:
MBBR (Moving Bed Biofilm Reactor) - Most Popular
Best for: Residential complexes, hotels, IT parks
How it works: Plastic biofilm carriers float in the aeration tank, providing surface area for bacteria to grow and treat wastewater efficiently.
Advantages:
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Compact footprint - 30-40% smaller than conventional ASP systems
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Handles flow variations - Works well with fluctuating sewage loads
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Low sludge production - Reduces disposal costs
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Easy to operate - Minimal technical expertise required
Typical capacity: 10 KLD to 500 KLD
Effluent quality: BOD < 10 mg/L, COD < 50 mg/L, TSS < 10 mg/L
MBR (Membrane Bioreactor) - Highest Quality Output
Best for: Hospitals, high-end hotels, pharmaceutical facilities
How it works: Combines biological treatment with ultrafiltration membranes that physically filter out bacteria, viruses, and suspended solids.
Advantages:
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Ultra-pure effluent - Meets drinking water standards (with additional treatment)
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Smallest footprint - 50% smaller than MBBR
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Zero suspended solids - Crystal-clear treated water
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Pathogen-free - Removes 99.99% bacteria/viruses
Typical capacity: 5 KLD to 200 KLD
Effluent quality: BOD < 5 mg/L, COD < 30 mg/L, TSS < 2 mg/L
Limitation: Higher operating cost due to membrane replacement (every 3-5 years)
SBR (Sequential Batch Reactor)
Best for: Properties with variable flow, industrial canteens
How it works: Batch treatment process - wastewater is collected, treated, settled, and discharged in cycles.
Advantages:
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Flexible operation - Adapts to varying sewage loads
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No secondary clarifier needed - Single tank performs all functions
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Good nutrient removal - Effective for nitrogen and phosphorus reduction
Typical capacity: 10 KLD to 100 KLD
Effluent quality: BOD < 10 mg/L, COD < 50 mg/L
Activated Sludge Process (ASP) - Traditional
Best for: Large municipal STPs, industrial townships
How it works: Aeration tank with continuous flow, followed by a secondary clarifier for sludge settling.
Advantages:
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Proven technology - 100+ years of operational history
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Low capital cost - Cheapest per KLD for large capacities
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Scalable - Easily expandable
Limitation: Requires large land area, skilled operators, and consistent power supply.
Typical capacity: 100 KLD to 10,000+ KLD
Industries and Properties We Serve
Meridian Micro Technology has installed STPs for a wide range of clients across Faridabad and Delhi NCR:
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Residential Complexes - Apartment buildings, gated communities, housing societies
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Hotels & Resorts - 3-star to 5-star hotels, guest houses, service apartments
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Hospitals & Healthcare - Multi-specialty hospitals, nursing homes, diagnostic centers
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Educational Institutions - Schools, colleges, universities, hostels
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IT Parks & Corporate Offices - Commercial complexes, business parks, call centers
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Shopping Malls & Retail - Malls, hypermarkets, food courts
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Industrial Facilities - Factory canteens, worker housing, administrative blocks
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Institutional Buildings - Government offices, military bases, prisons
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Hospitality & Recreation - Banquet halls, restaurants, sports clubs, golf courses
No matter your property type or sewage generation rate, we design CPCB-compliant STP systems tailored to your specific requirements.
STP Capacity and Pricing Guide
STP capacity is measured in KLD (Kiloliters per Day) or LPD (Liters per Day). Here's how to estimate your requirement:
Sewage Generation Rates:
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Residential: 135 liters/person/day (as per CPHEEO manual)
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Hotels: 150-200 liters/room/day
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Hospitals: 300-400 liters/bed/day
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IT parks: 45 liters/person/shift
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Restaurants: 40 liters/seat/day
STP Capacity (KLD) | Suitable For | Approximate Price Range |
|---|---|---|
10 - 25 KLD | Small apartments (50-150 residents), guesthouses | ₹8,00,000 - ₹18,00,000 |
25 - 50 KLD | Medium apartments (150-350 residents), hotels (50-100 rooms) | ₹18,00,000 - ₹35,00,000 |
50 - 100 KLD | Large complexes (350-700 residents), hospitals (100-200 beds) | ₹35,00,000 - ₹65,00,000 |
100 - 250 KLD | Townships, IT parks, mega malls | ₹65,00,000 - ₹1.5 crore |
250+ KLD | Industrial townships, municipal STPs | ₹1.5 crore+ (custom quote) |
Note: Final pricing depends on:
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Technology choice (MBBR vs MBR vs SBR)
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Inlet sewage characteristics (BOD, COD, TSS levels)
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Desired effluent quality (discharge vs reuse standards)
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Automation level (manual, semi-auto, fully automatic PLC)
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Civil work requirements (above-ground vs underground)
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Additional features (odor control, online monitoring, sludge dewatering)
Our STP Installation Process
We follow a proven 6-step process to ensure your STP operates flawlessly from day one:
Site Assessment & Capacity Estimation
Our engineers visit your site to:
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Estimate daily sewage generation based on occupancy
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Test inlet sewage characteristics (BOD, COD, TSS, pH)
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Evaluate available space (above-ground vs underground)
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Check electrical and plumbing infrastructure
Custom STP Design
Based on site assessment, we prepare a detailed design including:
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Technology selection (MBBR, MBR, SBR, or ASP)
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Treatment process flow diagram
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Equipment specifications (pumps, blowers, control panel)
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Civil drawings (tank dimensions, piping layout)
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CPCB compliance certification
Civil & Mechanical Installation
Our team executes:
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Civil construction (RCC tanks, chambers, pump houses)
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Equipment installation (pumps, blowers, aerators, filters)
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Electrical wiring and control panel setup
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Piping and valving network
Annual Maintenance Contracts (AMC)
We offer AMC packages covering:
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Monthly effluent testing (BOD, COD, TSS, pH)
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Quarterly blower servicing
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Sludge removal and disposal (as needed)
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24/7 emergency support
Why Choose Meridian Micro Technology for Your STP?
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30+ Years of Experience - Trusted since 1995 with deep expertise in wastewater treatment
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300+ Successful Installations - Proven track record across Faridabad, Gurugram, Noida, Delhi, and other NCR cities
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CPCB-Compliant Designs - All STPs meet Central Pollution Control Board discharge standards
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Turnkey Solutions - From design and regulatory approvals to installation, commissioning, and AMC
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Premium Equipment - We use trusted brands: Grundfos pumps, Lubi blowers, Siemens PLCs
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In-House Engineering Team - No subcontracting - our own engineers handle every project
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Fast Turnaround - STP operational within 4-8 weeks depending on capacity
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Local Support - Based in Faridabad with quick response times across Delhi NCR
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Transparent Pricing - Detailed quotes with no hidden costs. We beat competitors by 20-25%
CPCB Effluent Discharge Standards
Your STP must produce treated water that meets these parameters:
CPCB Standards for Sewage Discharge:
Our STPs consistently achieve:
BOD < 10 mg/L, COD < 50 mg/L, TSS < 10 mg/L - well within all CPCB limits
Parameter | Discharge to Municipal Drain | Discharge to Land/Water Body | Reuse (Flushing/Gardening) |
|---|---|---|---|
BOD (mg/L) | < 30 | < 10 | < 10 |
COD (mg/L) | < 250 | < 50 | < 50 |
TSS (mg/L) | < 100 | < 10 | < 10 |
pH | 5.5 - 9.0 | 6.5 - 8.5 | 6.5 - 8.5 |
Fecal Coliforms (MPN/100mL) | < 10,000 | < 100 | < 100 |
STP Operating Costs and Maintenance
Understanding the ongoing costs of running an STP helps you budget accurately:
Monthly Operating Costs (for a 50 KLD MBBR-based STP):
Per KLD Operating Cost: ₹700 - 1,100/month
Annual Operating Cost: ₹4.5 - 6.5 lakh/year for a 50 KLD plant
ROI from Water Reuse:
Reusing 50 KLD treated water saves ₹4.5 - 6 lakh/year in freshwater costs (at ₹25-35 per KL municipal rate).
Payback period: 5-7 years (capital cost ÷ annual savings)
Expense Category | Monthly Cost (₹) |
|---|---|
Electricity (blowers, pumps - ~15 kWh/KLD) | 12,000 - 18,000 |
Operator salary (1 person) | 15,000 - 20,000 |
Consumables (chlorine, testing kits) | 2,000 - 4,000 |
Sludge removal & disposal (quarterly) | 3,000 - 5,000 (divided monthly) |
AMC charges (preventive maintenance) | 5,000 - 8,000 |
Total Monthly Operating Cost | ₹37,000 - 55,000 |
Common Questions About Sewage Treatment Plants
Q. What is the difference between STP and ETP?
STP (Sewage Treatment Plant):
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Treats domestic wastewater from toilets, bathrooms, kitchens
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Handles human waste, soaps, detergents, food residue
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BOD/COD: 200-400 mg/L (inlet), <10 mg/L (outlet)
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Technology: Biological treatment (bacteria break down organic matter)
ETP (Effluent Treatment Plant):
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Treats industrial wastewater from manufacturing processes
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Handles chemicals, heavy metals, dyes, oils, toxic compounds
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BOD/COD: 500-5,000+ mg/L (highly variable)
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Technology: Chemical treatment + biological (depending on effluent type)
Key difference: STPs are for human waste; ETPs are for industrial process waste. If your facility generates both, you need separate STP + ETP systems.
Q. How much space does an STP require?
Space requirements depend on technology and capacity:
MBBR-based STP: 0.8 - 1.2 m² per KLD capacity
Example: 50 KLD plant = 40-60 m² (450-650 sq ft)
MBR-based STP: 0.5 - 0.8 m² per KLD
Example: 50 KLD plant = 25-40 m² (270-430 sq ft)
ASP-based STP: 1.5 - 2.5 m² per KLD
Example: 50 KLD plant = 75-125 m² (800-1350 sq ft)
Underground STPs can be installed beneath parking lots, gardens, or basements to save ground space.
Q. What happens to the sludge generated by the STP?
STPs generate two types of sludge:
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Primary sludge (from sedimentation) - Heavy solids, sand, grit
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Biological sludge (excess bacteria from aeration tank)
Sludge disposal options:
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Dewatering: Sludge is dried using filter presses or drying beds, reducing volume by 80%
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Composting: Dried sludge is composted with organic waste for use as fertilizer
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Municipal disposal: Authorized municipal contractors collect and dispose of sludge in designated landfills
Sludge generation rate: 0.5 - 1 kg dry solids per KLD per day
Removal frequency: Every 3-6 months depending on capacity
Q. Can treated water from STP be used for drinking?
No. Treated water from STPs meets non-potable reuse standards but is NOT safe for drinking without further treatment.
Safe reuse applications for STP-treated water:
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Toilet flushing (most common)
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Gardening and landscaping
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Cooling tower makeup water
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Car washing, floor cleaning
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Construction activities (dust suppression, concrete mixing)
To convert STP effluent to potable water, additional treatment is required:
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Ultrafiltration (UF) or Reverse Osmosis (RO)
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UV disinfection + ozonation
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Meeting BIS 10500 drinking water standards
We offer STP + RO combination systems for clients who need drinking-quality treated water.
Q. How often does the STP need maintenance?
Daily (by on-site operator):
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Check blower operation (no unusual noise)
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Monitor effluent clarity (should be clear, not cloudy)
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Ensure pumps are running smoothly
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Record flow meter readings
Weekly:
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Test effluent pH and TDS
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Clean inlet screens and grit chambers
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Check sludge level in clarifier
Monthly (by AMC provider):
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Comprehensive effluent testing (BOD, COD, TSS)
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Blower lubrication and belt inspection
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Aeration diffuser cleaning
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Control panel checks
Quarterly:
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Blower servicing (motor, bearings)
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Sludge removal if needed
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Equipment calibration
Annually:
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Full equipment overhaul
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Membrane cleaning (for MBR systems)
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Civil structure inspection
Q. Do I need a full-time operator for my STP?
For STPs up to 50 KLD: Semi-skilled operator working 2-4 hours/day is sufficient
For STPs 50-100 KLD: Full-time operator (8 hours/day) recommended
For STPs above 100 KLD: 2 operators in shifts (24/7 monitoring)
Operator responsibilities:
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Daily visual inspection
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Recording flow and effluent parameters
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Operating pumps and blowers
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Basic troubleshooting
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Coordinating with AMC team
Q. What is the lifespan of an STP?
Overall STP lifespan: 20-25 years with proper maintenance
Component lifespans:
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Civil structures (RCC tanks): 25-30 years
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Blowers: 8-10 years
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Pumps: 5-7 years
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Control panels: 10-12 years
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MBR membranes: 3-5 years (requires periodic replacement)
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MBBR media: 10-15 years
Regular AMC and timely component replacement ensure your STP operates efficiently for decades.
Q. Can an existing STP be upgraded or expanded?
Yes! We frequently upgrade existing STPs for:
Capacity expansion:
If your property's occupancy has increased (new buildings added), we can expand the existing STP by adding:
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Additional aeration tanks
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Extra blowers and pumps
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Larger clarifiers
Technology upgrades:
Convert old ASP systems to modern MBBR/MBR for:
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Better effluent quality
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Smaller footprint
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Lower operating costs
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Compliance with stricter discharge norms
Automation upgrades:
Add PLC-based automation, online monitoring, SCADA systems for remote operation.
Get a Free STP Quote Today
Ready to install a CPCB-compliant sewage treatment plant at your property? Meridian Micro Technology offers:
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Free site visit and capacity assessment
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Custom STP design based on your exact requirements
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CPCB compliance guarantee - We ensure your STP meets all discharge norms
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Transparent pricing - Detailed quote within 24-48 hours
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Fast installation - Your STP operational in 4-8 weeks
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Lifetime support - AMC packages and emergency assistance
Contact us today:
📞 Phone: +91 9811561063
📧 Email: meridianmicro05@gmail.com
📍 Address: Plot No. 7, Street No. 8B, Sarurpur Indl. Area, Faridabad-121005, Haryana