High salt wastewater (TDS> 30000 mg/L) has become a bottleneck problem restricting the green development of industries such as coal chemical, photovoltaic, and pharmaceutical due to its high silicon, high hardness, and high corrosiveness. Traditional processes face bottlenecks such as silicone scaling, severe membrane fouling, and high operating costs. Baihuipu Environmental Protection has innovatively developed a "multi-stage coupled deep purification technology" to achieve efficient synergistic removal of silicon hardness and salt resource utilization, helping enterprises reduce costs and increase efficiency.    

        1. Baihuipu Process Core: Four Stage Precise Purification System   

        1. Intelligent preprocessing: solving the problem of silicone colloids;  

      -Efficient network breaking technology: using pH gradient adjustment and special chelating agents (such as EDTA derivatives) to convert complexed silicon (such as sodium silicate) into free colloids;    

      -Composite coagulation precipitation: Customized composite PAC (polyaluminum chloride) and modified diatomaceous earth, with a silicon removal rate of over 85%, reducing the burden on subsequent processes.    

        2. Cascade chemical softening: deep removal of hardness to reduce risk;  

      -Two stage softening process:;  

        -Primary reaction tank: Add Ca (OH) ₂ to remove magnesium hardness (generate Mg (OH) ₂↓);    

        -Secondary reaction tank: Introduce Na ₂ CO ∝+CO ₂ gas exposure, accurately control pH, form high-purity CaCO ∝ crystals, and reduce hardness ion concentration to<30mg/L;    

      -Seed induction technology: Adding nano CaCO 3 crystal nuclei to accelerate precipitation rate and reduce agent consumption by 20%.    

        3. Targeted adsorption for silicon removal: Overcoming residual dissolved silicon;  

      -Patent adsorbent material (BHPSi-30):;  

      -Using alumina zeolite composite carrier and surface grafting of amino functional groups, the selective adsorption capacity for H3SiO ₄⁻ reaches 80mg/g;    

      -Strong resistance to salt interference (effective even when TDS ≤ 80000 mg/L), stable silicon content<15mg/L;    

      -Online regeneration system: NaOH solution backwash regeneration, material recycling ≥ 50 times, reducing operation and maintenance costs by 40%.    

        4. Membrane salt separation+evaporation crystallization: resource utilization closed-loop;  

      -Nanofiltration (NF) salt separation: Separate monovalent salts (NaCl/Na ₂ SO ₄) from divalent salts (CaCl ₂), with a recovery rate greater than 90%;    

      -MVR evaporation crystallization: produces industrial grade sodium chloride/sodium sulfate with purity up to GB/T 5462-2015 standard, which can be sold directly;    

      -Water conductivity<100 μ S/cm: meets the reuse requirements for cooling circulating water, cleaning processes, etc.    

        2、 Technical Advantage: Why Choose Baihuipu?    

      -Data speaks for itself:;  

        |Indicator          |Typical inflow value;   |Guaranteed outflow value;   |Industry standards;       |   

        |---------------|--------------|--------------|----------------|   

        |Total silicon (SiO ₂); | 200-500mg/L  | ≤20mg/L      | ≤50mg/L（GB） |   

        |Total hardness (CaCO ∝) | 800-2000mg/L | ≤ 50mg/L      | ≤150mg/L      |   

        | TDS            |30000 to 50000 mg/L; |Reclaimed water<500mg/L | -              |   

      -Cost advantage: The cost of treating one ton of water is reduced by 35% compared to traditional processes, and resource utilization benefits offset 30% of operation and maintenance costs;    

      -Intelligent control: AI algorithms monitor water quality in real-time, automatically adjust the dosage of chemicals, and improve system stability by 50%.    

        3、 Industry Application Case: Practical Verification of Technical Value;  

        Case 1: Coal gasification ash water treatment in a large coal chemical enterprise;  

      -Problem: Ash water SiO ₂ 380mg/L, hardness 1200mg/L, causing frequent shutdown due to scaling of the evaporator;    

      -Solution: Baihuipu's "pretreatment+adsorption+salt crystallization" combination process;    

      -Effect: The silicon content has been reduced to 12mg/L, reducing equipment cleaning costs by 6 million yuan annually and generating 2 million yuan in by-product salt revenue per year.    

        Case 2: Treatment of Photovoltaic Silicon Wafer Cutting Wastewater;  

      -Pain points: containing nano silicon powder (SS>1000mg/L) and PEG pollutants, traditional processes cannot meet the standards;    

      -Innovation point: Baihuipu has added "ultrafine filtration+ozone catalytic oxidation" pretreatment to ensure the efficient operation of subsequent silicon removal systems;    

      -Result: The effluent SS is less than 10mg/L, silicon is less than 15mg/L, and the water reuse rate has been increased to 90%.    

        4. Baihuipu Environmental Protection: Technical Strength and Service Guarantee;  

      -R&D support: Joint team research and development, 22 honorary patents (patent number: ZL2023XXXXXX);    

      -Full process service: water quality testing → small-scale testing → process package design → EPC engineering → intelligent operation and maintenance;    

      -Promise: If the effluent does not meet the standard, the equipment will be serviced for 1 year and maintained for life.    

        5、 Immediate action: moving towards the era of zero wastewater discharge;  

      High salt wastewater treatment is not only an environmental requirement, but also the "second profit source" for enterprises to reduce costs and increase efficiency. Baihuipu Environmental Protection provides free water quality testing and process design. Click on the official website to fill out the requirement form and obtain customized technical reports within 24 hours!    

      Consultation hotline: 13631765076;

      Official website link: [www.bhp-zfq.com/high salt wastewater treatment]