Explore our industrial range of high-basicity aluminum compounds and synthetic polyacrylamide formulations optimized for lime wastewater treatment.
Ultra-high molecular weight synthetic polymer designed to aggregate micro-flocs formed during lime precipitation processes.
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Cationic organic coagulants designed to neutralize colloidal charge and reduce dependency on excessive inorganic lime dosing.
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White and yellow low-dust granules engineered for uniform particle size and rapid solubility in heavy sludge treatment.
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Transparent solution ensuring consistent automated feed rates and optimal chemical reaction kinetics in batch systems.
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Combines ferric-based density and aluminum-based speed to achieve fast sedimentation profiles in highly alkaline wastes.
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High-grade flocculant with trace heavy metal metrics, suitable for paper processing and high-standard municipal effluents.
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Liquid version of PAC-01 offering low residual turbidity and precise metering parameters for closed loops.
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Engineered polymer chains optimized for oil recovery, pulp and paper, and inorganic sludge conditioning complexes.
Technical DetailsA comprehensive B2B technical guide analyzing chemical precipitation, metal neutralization, and synergistic polymer dosing configurations.
Lime ($Ca(OH)_2$ or $CaO$) is the foundation of industrial wastewater treatment processes, particularly in streams with high mineral acidity, heavy metal concentrations, and dissolved sulfates. By raising the pH of the aqueous solution, lime drives the precipitation of metal cations as insoluble metal hydroxides, and binds sulfates into gypsum crystals.
However, relying solely on inorganic lime leads to a series of operational bottlenecks: high sludge volumes, low sedimentation velocities, and significant residual turbidity. At Wuxi BS Water Treatment Chemicals Co., Ltd., we combine 27 years of manufacturing experience to bridge this gap. Utilizing high-performance secondary coagulants like Polyaluminium Chloride (PAC) and Polyacrylamide (PAM), we optimize flocculation dynamics, reduce sludge moisture content, and significantly lower chemical operating costs.
Precise monitoring of pH curves enables target precipitation of amphoteric heavy metals. Utilizing our stable PAC-01 solution guarantees reliable system stability, preventing metal redissolution at high alkaline boundaries.
Our High Basicity Aluminum Chlorohydrate (ACH) and PDADMAC compounds feature a high cationic charge density that rapidly neutralizes negatively charged colloidal particulates, reducing total lime load requirement by up to 30%.
Our structural Anionic Polyacrylamide (APAM) features high-density molecular bridging, which gathers loose calcium carbonate and sulfate precipitates into large, shear-resistant flocs that are easily dewatered in belt presses.
When treating industrial effluents, the solubility product ($K_{sp}$) of heavy metal oxides dictates their precipitation profiles. For instance, Copper ($Cu^{2+}$) and Nickel ($Ni^{2+}$) exhibit minimum solubility between pH 9.0 and 10.5. However, at these highly alkaline ranges, the sludge formed is highly dispersed and features a low settling rate.
By introducing Polymeric Aluminium Ferric Chloride (PAFC) or high-purity Polyaluminium Chloride (PAC), our chemicals create polymeric aluminum-iron hydrolysis complexes. These complexes act as nucleation sites, initiating sweep flocculation. The addition of our synthetic polymers bridges these micro-flocs into macro-flocs, decreasing sedimentation time from hours to minutes.
| Chemical Agent | Primary Active Mechanism | Optimal pH Range | Ideal Application Sector | Sourcing Specification |
|---|---|---|---|---|
| Anionic Polyacrylamide (APAM) | Polymer Bridging & Macro-floc Formation | 6.0 - 11.0 | Mining, Steel Slag Neutralization, Sludge Dewatering | Powder (Ultra-High MW) |
| Polyaluminium Chloride (PAC) | Charge Neutralization & Co-precipitation | 5.0 - 9.0 | Municipal Wastewater, Industrial Feed Water Pre-treatment | Granular / Clear Liquid 10%-17% |
| Aluminum Chlorohydrate (ACH) | High Basicity Coagulation, Trace Residue | 5.5 - 8.5 | High-purity Closed Loop Cooling Water, Paper Mills | High Al2O3 High Basicity Liquid |
| PDADMAC | High Cationic Organic Coagulation | 4.0 - 10.0 | Petrochemical Wastewater, Dyeing Effluent Treatment | Aqueous Liquid Solutions |
| Water Decoloring Agent (WDA) | Decoloration, COD Cracking of Complex Chromophores | 3.0 - 10.0 | Textile Dyeing, Chemical Industry Effluents | Liquid, High Charge density |
Years Industrial Experience
Annual Capacity (Tons)
Finished Warehouse (Tons)
Global Enterprises Served
The wastewater treatment industry is rapidly shifting toward chemical circularity and carbon neutralization. Traditionally, lime wastewater treatment generates high volumes of calcium-rich chemical sludge that historically ended in landfills.
Wuxi BS Water Treatment is pioneering the next generation of smart flocculant systems:
Analyzing how chemical neutralization and coagulation solutions resolve site-specific issues across diverse industrial operations.
Mine waters containing high iron, manganese, and sulfate concentrations are neutralized using lime. The introduction of Wuxi BS PAFC and APAM enables the fast separation of gypsum and iron hydroxide sludge, preventing downstream siltation and pipeline scaling.
Effluents with heavy metal loads (Chromium, Nickel, Zinc) undergo reduction and subsequent alkaline precipitation. Our high-basicity ACH and PDADMAC function as high-efficiency co-precipitation aids, keeping effluent parameters below strict regulatory limits.
Treating complex black liquors requires high dosage chemical coagulants. Our advanced Composite Polyaluminum Chloride (CPAC) combined with high molecular weight PAM ensures effective color removal and COD reduction prior to biological stage treatment.
Wuxi BS Water Treatment Chemicals Co., Ltd., originally established in 1998 as Wuxi Bisheng Water Treatment Agent Co., Ltd., has consistently invested in digitized production and quality control facilities.
Our facility incorporates digital intelligent solid feeding lines and high-throughput reaction chambers, allowing us to maintain a stable annual production output exceeding 500,000 tons of water treatment chemicals.
With a dedicated raw material and finished product warehouse buffer exceeding 20,000 tons, we mitigate global supply chain fluctuations, ensuring continuous product flow during peak demand seasons. Our close proximity to Shanghai Port enables rapid container loading and worldwide dispatching.
Ensuring cross-border chemical compliance and robust technical engineering support on a global scale.
Our products undergo quality control procedures aligned with ISO 9001 and ISO 14001 certification frameworks. We support global clients with complete SDS documentation, REACH registration dossiers, and regional environmental clearances.
We accommodate bulk distribution requirements: 25 kg bags with pallet configurations, 1000 kg IBC containers, and bulk liquid container tankers, maintaining chemical stability during long oceanic transits.
Our expert chemical engineers provide custom jar-testing services. Send us your wastewater sample, and our laboratory will determine the optimal stoichiometric ratio of lime to PAC/PAM to meet your exact discharge limits.
Technical answers to common issues encountered in industrial lime wastewater treatment configurations.
Lime is an excellent pH neutralizer and heavy metal precipitant, but it forms highly dispersed micro-flocs. By adding Anionic Polyacrylamide (APAM) at 1-3 ppm, these micro-flocs are gathered into large flocs through polymer bridging, which increases settling velocity and decreases residual turbidity.
Sulfate precipitation using lime requires the formation of calcium sulfoaluminate (ettringite). Introducing PAC provides reactive monomeric and polymeric aluminum species ($Al^{3+}$ and $Al_{13}$ complexes) that speed up ettringite formation, reducing sulfate residuals below regulatory thresholds.
Solid PAC (granules/powders) offers longer shelf life and lower shipping costs per active unit. Liquid PAC (10%-15% active ingredient) eliminates the preparation and dissolving stages, making it suitable for plants with automated chemical dosing systems.
Generally, anionic PAM is chosen for inorganic chemical sludge (such as lime-iron or lime-calcium precipitates) due to its bridging action on neutral/cationic particles. Cationic PAM is preferred when there is organic biological sludge mixed into the waste stream, as it neutralizes the negative organic charges.
In most operations, Lime is added first to adjust the pH and initiate precipitation. PAC is introduced second to coagulate colloidal particles. Finally, PAM is added as a flocculant at the entry point of the clarifier or dewatering press to minimize shear degradation.
ACH exhibits high basicity (typically 83%-84%), which means it introduces less acidity to the system than standard alum or PAC. It works efficiently in pH ranges up to 9.0; however, if the pH exceeds 9.5, the amphoteric nature of aluminum can lead to redissolution, making PAFC a better alternative.
Our ISO-certified manufacturing process leverages automated raw material dosing and real-time monitoring of active ingredient concentrations. Each shipped lot undergoes quality control testing (ICP-OES and Viscometers) and is accompanied by a Certificate of Analysis (COA).
Yes. Our engineering team can adjust polymer molecular weight, charge density, and active ingredient ratios (such as in our PAFC or Composite PAC ranges) to optimize treatment profiles for complex oil and gas or textile wastewater streams.
Providing high-efficiency chemical solutions to diverse sectors requiring high-performance wastewater processing.
Stay informed with the latest updates, engineering innovations, and global conference reports from Wuxi BS.
Sep 09, 2025
Wuxi BS Water Treatment Chemicals Co., Ltd. continues to strengthen its international shipping and distribution partnerships, optimizing logistics times for South American and European markets.
Aug 21, 2025
On August 1, 2025, Wuxi BS Water Treatment Chemicals Co., Ltd. integrated computerized feeding and blending lines, improving chemical active yield consistency across our PAC and PAFC ranges.
Aug 21, 2025
Wuxi BS presented its latest findings on low-sludge polymeric formulations at the national conference, contributing to zero-liquid-discharge (ZLD) targets in heavy coal chemical processing.
Reach out to Wuxi BS Water Treatment Chemicals Co., Ltd. for pricing, product samples, or customized chemical formulations.
Wuxi BS Water Treatment Chemicals Co., Ltd. Founded in 1998.
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Ensure regulatory compliance with our high-purity coagulants, organic flocculants, and composite formulations.
Concentrated organic coagulant designed to reduce sludge volume in municipal clarifiers.
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Multifunctional hybrid formulation combining rapid coagulation and micro-floc formation features.
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Stable formulation designed for rapid settleability in cold, low-turbidity or high-density mine water.
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Maximized $Al_2O_3$ content with low transport weight, ideal for long-distance export delivery.
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Specially engineered chemical complexes designed to eliminate colloidal color in dye and paint plant waste.
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High-grade manufacturing process yields minimal sulfate and heavy metal content.
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Standard chemical solution used by international water plants for rapid sediment coagulation.
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Excellent filtration and settling profiles, lowering energy usage in industrial sludge processing.
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