I. Overview
Wastewater primarily originates from the external sampling of the owner's scientific research, laboratory, and monitoring departments. The wastewater discharge volume is relatively small and varies significantly over time. Additionally, the pollution components are complex and unstable, mainly including various waste acids and alkalis, toxic organic compounds, heavy metals, and pathogenic microorganisms.
Design Water Volume
Processing capacity designed according to the buyer's requirements2m3/dChoose our company's productsYHS-WJ-2TLaboratory wastewater treatment equipment.
Section 3: Design Basis
1Comprehensive Wastewater Discharge StandardGB8978-1996）；
2"Wastewater Discharge Quality Standards into Urban Sewerage System" (CJ343—2010)；
3《Urban Sewage Treatment Plant Emission Standard》 (GB18918—2002)；
4Outdoor Drainage Design SpecificationGB50014-2006）；
5Other current industry standards and specifications manuals.
Section 4: Design Specifications
1Design for water quality intake
Serial Number | Project | Numeric | Note |
1 | CODcr | 600-1000mg/L | Party A provides |
2 | SS | 50-100mg/L | Party A provides |
3 | Colorimetry | Lightproof | Party A provides |
4 | Escherichia coli | ≤2.4×105 | Refer to similar wastewater |
2Design Standards
Treat wastewater quality in accordance with the "Comprehensive Wastewater Discharge Standard"GB8978-1996Grade 3 Standard,Key indicators are as follows:
Serial Number | Project | Numeric | Note |
1 | CODcr | ≤500mg/l | |
2 | SS | ≤400mg/l | |
3 | PH | 6--9 | |
4 | Color saturation | 80 | |
7 | Escherichia coli | ≤500Individual/l |
Section 5: Process Principle Description
Wastewater is collected and homogenized in a sedimentation tank before flowing into an neutralization reactor. Quantitative acid (or alkali) solution is added based on the water quality characteristics for neutralization. The neutralized wastewater is then pumped into a filtration tank for filtration. While pumping the wastewater, a定量 of净水剂 solution is also added to induce flocculation of pollutants, enhancing the filtration efficiency. The filtered clean water is sterilized by an ozone sterilizer and then flows into a biological activated carbon tank, where fine pollutants are further intercepted and adsorbed, before being decomposed. The treated clean water is then directly discharged into the city's sewage network.
1Neutralizing Unit: Addition into wastewaterNaOHAdjustPHValue to6.5-7.2Treat wastewater toCr3+ 、Cd2+、Pb2+ 、Mn2+Ion andNaOHThe reaction forms a precipitate, achieving the purpose of removing heavy metal ions. Subsequently,PHValue returns to6-9Automatic ControlNaOH、 HClDosage amount.
2Sedimentation clarifier: Add a certain amount ofCJIFlocculants cause wastewater to produce a large amount of flocs, which, after sedimentation, reduce the workload of subsequent processes and improveCODRemoval rate of suspended solids.
3Filtering Device: Utilizes a quartz sand filling layer to trap and remove suspended particles and other fine substances not separated by air flotation, with scheduled backflushing to ensure stable filtration efficiency.
4Activated Carbon Adsorption Decolorization Unit: Further deep treatment using the adsorption capacity of activated carbon to remove color, organic matter, and odors from water, ensuring the effluent meets discharge standards..
5Ozone Generators (Disinfection): E. coli, Salmonella, and other pathogens can be disinfected using an ozone generator., Ozone's molecular formula isO3,Sky blue, with a fishy odor; liquid form is dark black, solid form is blue-black. At the same time, ozone is a strong oxidizing agent, and the sterilization process is a biochemical oxidation reaction.
6Photocatalytic device: Utilizing specialized high-energy, high-ozoneUVUltraviolet beam irradiation to decompose organic matter in wastewater, effectively treating: ammonia, trimethylamine,H2S、VOCThe molecular chain structures of waste gases such as benzene, toluene, xylene, etc., cause the molecular chains of organic or inorganic macromolecular waste gas compounds to degrade and transform into low molecular weight compounds under the照射 of high-energy ultraviolet light beams, such as...CO2、H2OAchieve effective governance and compliant emissions.
7Ultrafiltration Unit: An ultrafiltration membrane system is a solution separation device driven by the pressure difference across the ultrafiltration membrane fibers, which act as the filtration medium. The ultrafiltration membrane only allows solvents in the solution to pass through.(As water molecules)Inorganic salts and small molecular organic substances pass through, while large molecular substances such as suspended particles, colloids, proteins, and microorganisms in the solution are retained, thereby achieving purification and separation.
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