1. Case Basic Information
1.1 Project Subject
- Provider: HELLA WATER, a trusted supplier of high-performance environmental solutions, specializes in developing and delivering tailored water treatment product for industrial, agricultural, and municipal sectors.
- Project Type: Slaughter wastewater treatment (high-concentration organic wastewater purification)
- Core Objective: Treat 680m³/d of slaughter wastewater to meet the dryland irrigation standard specified in 《Agricultural Irrigation Water Quality Standard》(GB5084-2005)
1.2 Treatment Scale & Water Quality Parameters
Inlet Water Quality (Maximum Values)
| Parameter | Value (mg/L) |
|---|---|
| COD (Chemical Oxygen Demand) | 6000 |
| BOD (Biochemical Oxygen Demand) | 3500 |
| Suspended Solids (TSS) | 2200 |
| Ammonium Nitrogen (NH₄⁺-N) | 350 |
| Vegetable & Animal Fats | 800 |
| Petroleum Products | 35.5 |
| Phosphates (PO₄³⁻) | 45-50 |
| pH | 6-8 |
| Iron (Fe²⁺/Fe³⁺) | 3.9 |
| Anionic Surfactants | 20.0 |
Effluent Discharge Standard (GB5084-2005 Dryland Irrigation)
| Parameter | Standard Value (mg/L) |
|---|---|
| COD | ≤40 |
| BOD | ≤10 |
| Suspended Solids | ≤50 |
| Ammonium Nitrogen (NH₄⁺-N) | ≤1.5 |
| Nitrite Nitrogen (NO₂⁻-N) | ≤0.5 |
| Nitrate Nitrogen (NO₃⁻-N) | ≤25 |
| Phosphates (PO₄³⁻) | ≤1 |
| Petroleum Products | ≤0.3 |
| Anionic Surfactants | ≤0.5 |
| pH | 6.5-8.5 |
1.3 Design Standards & Compliance
The project adheres to multiple national and industrial standards, including:
- GB 50014-2006: Code for Design of Outdoor Drainage
- GB5084-2005: Agricultural Irrigation Water Quality Standard
- GB 50141-2008: Code for Construction and Acceptance of Water Supply and Drainage Structures
- GBZ1-2010: Hygiene Standards for Industrial Enterprise Design
- JB2932-1999: Technical Specifications for Water Treatment Equipment
- ISO9001: Quality Management System Certification
1.4 Application Scenarios
- Slaughterhouse wastewater treatment (blood, fat, hair, manure, and wash water)
- Reclaimed water for agricultural irrigation, aligning with agricultural water purification requirements
- Pollution control for livestock and poultry breeding industries
- Compliance with environmental protection regulations for wastewater discharge
2. Project Core Pain Points & Requirements
2.1 Industry Common Pain Points
- High Pollution Load: Slaughter wastewater features extremely high concentrations of organic matter (COD up to 6000 mg/L), SS (2200 mg/L), and ammonia nitrogen, leading to severe water eutrophication if discharged directly.
- Safety & Environmental Risks: Foul odors (ammonia, hydrogen sulfide) cause air pollution; pathogenic microorganisms (over 90 zoonotic diseases) pose health threats; sludge accumulation leads to secondary pollution.
- Unstable Water Quality: Wastewater volume fluctuates significantly (85-90% discharged in a few hours daily), creating strong impact loads on treatment systems.
- High Operating Costs: Traditional processes consume excessive energy and chemicals; complex operations require intensive manual labor.
2.2 Customer Core Requirements
- Pollutant Removal: Achieve efficient reduction of COD, BOD, SS, ammonia nitrogen, and fats, meeting GB5084-2005 irrigation standards.
- Cost Control: Keep direct treatment costs below USD 0.3/ton of water; minimize energy and chemical consumption.
- Operational Simplicity: Realize automatic operation, reduce manual intervention, and simplify maintenance.
- Safety & Compliance: Eliminate odor and pathogenic risks; ensure stable operation without secondary pollution.
- Space Efficiency: Optimize equipment layout to minimize floor space.
3. Hella Water Customized Solutions
3.1 Process Design: Integrated Treatment Technology
The project adopts the “Pretreatment + Anaerobic + A/O + Deep Treatment + Disinfection” process, tailored for high-pollution slaughter wastewater:
- Pretreatment Stage:
- Grille Tank: Removes large impurities (hair, bone fragments) to protect subsequent equipment.
- Micro-aerobic Hydrolysis Conditioning Tank: Balances water quality and quantity (accommodates half a day’s water volume) to mitigate impact loads.
- High-efficiency Air Flotation Machine: Cooperates with chemical dosing system (PAC/PAM) to remove 90% of SS and 85% of fats, laying the foundation for subsequent biochemical treatment.
- Anaerobic Treatment Stage:
- UASB Anaerobic Tank (3 sets): Decomposes large-molecular organic matter (proteins, fats) into small-molecular substances through hydrolysis, acidification, and methanogenesis, reducing COD by 60-70% and lowering the load for aerobic treatment.
- Aerobic Treatment Stage:
- Anoxic Tank: Improves wastewater biodegradability; converts organic nitrogen into ammonia nitrogen.
- Contact Oxidation Tank: Filled with elastic three-dimensional filler, providing a carrier for microbial attachment. High-efficiency aeration ensures DO levels of 2-4 mg/L, removing 85-90% of remaining organic matter and 95% of ammonia nitrogen.
- Deep Treatment & Disinfection Stage:
- Secondary Sedimentation Tank: Separates sludge from water, ensuring clear effluent.
- Disinfection Tank: Uses chlorine dioxide generator for sterilization (avoids carcinogenic by-products of sodium hypochlorite), killing 99.9% of pathogenic microorganisms.
- Sludge Treatment Stage:
- Sludge Thickening Tank & Drying Plant: Dewaters excess sludge (moisture content ≤60%) for safe disposal or resource utilization, preventing secondary pollution.
3.2 Core Equipment Configuration
| System Module | Key Equipment | Specifications | Quantity | Function |
|---|---|---|---|---|
| Pretreatment | High-efficiency Air Flotation Machine | Processing capacity: 40m³/h; carbon steel anti-corrosion | 1 set | Remove SS and fats |
| Anaerobic Treatment | UASB Anaerobic Tank | Diameter 8m × height 12m; semi-underground steel-concrete structure | 3 sets | Decompose high-concentration organic matter |
| Aerobic Treatment | Contact Oxidation Tank | Size: 50000×4000×4500mm; carbon steel anti-corrosion | 1 set | Oxidize organic matter and ammonia nitrogen |
| Aerobic Treatment | Roots Blower | Air volume: 5.56m³/min; power: 15KW | 2 units (1 for use, 1 for backup) | Provide aeration oxygen |
| Disinfection | Chlorine Dioxide Dosing Device | Power: 0.03KW; automatic control | 1 set | Sterilize effluent |
| Sludge Treatment | Snail Stacking Machine | Power: 2.5KW | 1 set | Dewater excess sludge |
| Auxiliary | Sewage Lifting Pump | Flow rate: 40m³/h; head: 15m | 4 units | Transport wastewater between tanks |
3.3 Intelligent & Energy-saving Design
- Automatic Control: Equipped with programmable logic controller (PLC) to automate pump start/stop, dosing, and aeration; water level sensors and flow meters realize real-time monitoring and adjustment.
- Energy Efficiency: Optimizes equipment matching (e.g., Roots blower operates in high-efficiency zone); UASB anaerobic tank produces biogas (optional for energy recovery), reducing energy consumption by 15% compared to traditional processes.
- Space Optimization: Adopts semi-underground and integrated equipment design, reducing floor space by 20% compared to conventional systems.
4. Project Effectiveness Verification
4.1 Pollutant Removal Efficiency
| Pollutant | Inlet Concentration (mg/L) | Effluent Concentration (mg/L) | Removal Rate |
|---|---|---|---|
| COD | 6000 | ≤40 | ≥99.3% |
| BOD | 3500 | ≤10 | ≥99.7% |
| SS | 2200 | ≤50 | ≥97.7% |
| Ammonium Nitrogen | 350 | ≤1.5 | ≥99.6% |
| Vegetable & Animal Fats | 800 | ≤5 | ≥99.4% |
| Petroleum Products | 35.5 | ≤0.3 | ≥99.1% |
4.2 Operational Performance
- Stability: The system withstands 30% fluctuations in inlet water volume and concentration; effluent quality meets standards 24/7.
- Cost Savings: Direct treatment cost is USD 0.2/ton of water (electricity: USD 0.15/ton; chemicals: USD 0.05/ton), saving 30% compared to traditional processes.
- Safety Compliance: Odor concentration is below national standard (GB3096-93); pathogenic bacteria (E. coli, fecal streptococci) are not detected in effluent.
- Labor Reduction: Automatic operation reduces manual workload by 70%; only 1-2 operators are required per shift.
4.3 Environmental Benefits
- Annual reduction of COD discharge by 2,102 tons, BOD by 1,241 tons, and ammonia nitrogen by 123 tons.
- Reclaimed water (248,200 m³/year) is used for agricultural irrigation, saving freshwater resources.
- Sludge is recycled as organic fertilizer, realizing resource utilization.
5. Case Corresponding Product Quotation Description
5.1 Quotation Overview
| Item | Description | Quantity | Unit Price (USD) | Total Amount (USD) |
|---|---|---|---|---|
| Core Equipment | High-efficiency Air Flotation Machine, UASB Anaerobic Tank, Contact Oxidation Tank, Disinfection System, Sludge Treatment Equipment | 1 set (complete system) | 185,000 | 185,000 |
| Auxiliary Equipment | Pumps, Blowers, Dosing Devices, Sensors, PLC Control System | 1 set | 42,000 | 42,000 |
| Installation & Commissioning | On-site installation, pipeline connection, system debugging | 1 project | 28,000 | 28,000 |
| Design & Training | Process design, technical drawings, operator training | 1 project | 15,000 | 15,000 |
| Total Investment | – | – | – | 270,000 |
5.2 Quotation Terms
| Term Type | Details |
|---|---|
| Validity Period | 30 working days from the date of quotation |
| Payment Terms | 30% advance payment, 50% before shipping, 20% after acceptance |
| Lead Time | 45 days (from receipt of advance payment to equipment delivery) |
| Incoterms | DAP (Delivered at Place) |
| Warranty Period | 12 months from the date of acceptance |
| Country of Origin | China |
| Product Condition | Brand new, ISO9001 certified |
5.3 Additional Notes
- The quotation excludes civil engineering (tank foundation, machine room construction) and external power supply costs.
- Spare parts (filler, pumps, sensors) are provided at 10% of the equipment price for long-term use.
- Customized adjustments to process and equipment are available based on actual water quality and site conditions.
6. Frequently Asked Questions (FAQ)
6.1 Installation & Commissioning
Q: What are the on-site requirements for equipment installation?A: The project requires an indoor machine room (≥50 m²) and outdoor installation area (≥100 m²) for tanks. It needs access to 380V AC power supply (installed capacity: 30.78KW) and stable water supply/drainage pipelines. We provide detailed installation drawings and send technicians for on-site guidance; commissioning takes 7-10 days.
6.2 Maintenance & Upkeep
Q: How often does the equipment require routine maintenance?A: Routine maintenance includes weekly inspection of pump and blower operation, monthly cleaning of grille and filters, quarterly calibration of sensors and dosing devices, and semi-annual inspection of anaerobic tank fillers. The system’s automatic control reduces maintenance workload, with an average of 8 hours of maintenance per week.
Q: What is the service life of core equipment?A: The UASB anaerobic tank and contact oxidation tank have a service life of ≥15 years; pumps and blowers have a service life of ≥8 years; filler needs to be replaced every 5-6 years. We provide lifelong technical support and preferential spare parts supply.
6.3 Warranty & After-Sales
Q: What is covered under the warranty period?A: Within the 12-month warranty period, we provide free repair or replacement for faults caused by design, manufacturing, or material defects (excluding human damage or improper operation). We respond to maintenance requests within 2 hours and dispatch technicians to the site within 48 hours for urgent issues.
Q: Do you provide post-warranty services?A: Yes. After the warranty period, we offer lifelong maintenance services at cost price (labor + spare parts). We conduct annual return visits to inspect system operation and provide optimization suggestions.
6.4 Operational Cost
Q: What factors affect the daily operating cost?A: The main factors include electricity price (accounting for 75% of operating cost), chemical consumption (PAC/PAM, chlorine dioxide raw materials), and labor cost. The cost can be further reduced by recycling biogas from the UASB anaerobic tank for heating or power generation.
6.5 Safety & Compliance
Q: How to handle odors generated during treatment?A: The system adopts underground tank design and ground greening to absorb odors; the contact oxidation process minimizes odor production. For large-scale projects, we can add an odor treatment device (activated carbon adsorption) to meet stricter environmental standards.
Q: Does the treated water meet drinking water standards?A: The current design targets agricultural irrigation standards (GB5084-2005). If drinking water is required, we can add post treatment filtration system (ultrafiltration + reverse osmosis) to upgrade the process, ensuring compliance with GB 5749-2006 drinking water standards.
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