High cost of landfill leachate treatment and risk of secondary pollution
Customer pain points:
XXX Environmental Protection's Xingou Waste Incineration Plant (3,000 tons/day) faces three major challenges in leachate treatment:
High treatment costs: Traditional processes cost 180 yuan per ton, and annual operation and maintenance costs exceed 5 million yuan.
Difficulty in concentrate disposal: Nanofiltration concentrate contains high concentrations of organic matter, and direct discharge violates the Solid Waste
Law.
Unrecovered resources: Direct biogas discharge results in an average daily methane loss of 5,600 cubic meters (equivalent to 4.52 tons of standard coal).
Precision resource solution design:
Core process chain upgrade:
Components
Technical parameters
Innovation
External MBR System
Sludge Concentration MLSS ≥ 15g/L · Organic Load 6kg COD/m³/d
Shock Load Resistance Increased by 300%
Two-Stage Salt Separation Membrane System
NF+RO Dual Membrane Combination · Sodium Sulfate Rejection ≥ 98%
Concentrate Volume Reduction 70% · Salt Separation Purity > 99.5%
Biogas Cogeneration Unit
5600m³/d Biogas Power Generation · 85% Thermal Power Efficiency
Annual Carbon Emission Reduction of 1,649 Tons · Revenue Linked to Grid Electricity Prices
Technological breakthroughs:
Zero-discharge technology for concentrated liquid: Nanofiltration concentrate re-injection incinerator (850°C high-temperature decomposition of organic matter)
achieves zero liquid discharge throughout the plant.
Intelligent dosing optimization: Dynamically adjusts the carbon-nitrogen ratio based on influent COD fluctuations, reducing chemical consumption by 35%.
EPC integration: Full control of the design-procurement-construction process reduces construction time by 40% and extends the warranty period to 12 months.
Implementation effect and quantified benefits:
Comparison of key indicators before and after the transformation:
Indicator
Before renovation
After renovation
Improvement
Unit Processing Cost
180 RMB/ton
45 RMB/ton
↓75%
Biogas Recovery Rate
0%
100%
New Revenue Source
Annual Carbon Emissions
2862 tons CO₂e
1213 tons CO₂e
↓57.6%
Equipment Continuous Operation Cycle
15 days
90 days
↑500%
Economic benefits:
Direct Cost Savings: Annual processing fees reduced from 6.48 million to 1.62 million (based on 3,600 tons/day)
Energy Revenue: Biogas power generation of 11,200 kWh/day → annual revenue of 2.46 million yuan (at 0.6 yuan/kWh)
Carbon Trading Revenue: Annual carbon emissions reduced by 1,649 tons → carbon quota revenue of 82,000 yuan (50 yuan/ton)
Industry application expansion scenarios:
This solution has been verified to be applicable to:
Municipal Wastewater Treatment Plant: Ningbo Lanshan Water Purification Plant's "dual membrane system" produces 100,000 m³/d of recycled water annually, alleviating industrial water shortages.
Coal Chemical Wastewater: MNF-200 nanofiltration membrane salt separation technology reduces coal-to-ethylene glycol wastewater treatment costs from 56.9 to 23.2 yuan/ton.
Electronic Industrial Park: Jinke Environment's "New Water Island" modular equipment increases recycled water production to 95% and reduces land use by 60%.