Jiangsu Hengfeng Fine Chemical Co., Ltd.

Jiangsu Hengfeng Fine Chemical Achieves Major Breakthrough in Customized Electronic Factory Wastewater Treatment Solution Recently, the customized wastewater treatment solution tailored by Jiangsu Hengfeng Fine Chemical Co., Ltd. (hereinafter referred to as "Jiangsu Hengfeng") for an electronic factory's wastewater treatment needs has successfully completed experimental verification. The core product, high-ionicity cationic polyacrylamide (PAM), performed outstandingly, with treatment efficiency far exceeding the existing agents currently used on-site by the factory. Furthermore, it broke the traditional cognition of reagent selection for electronic factory wastewater treatment, achieving an unexpectedly optimal treatment effect with high-ionicity products, providing a new technical reference for wastewater treatment in the electronic industry. Electronic industrial wastewater has complex components, containing various harmful substances such as heavy metal ions, organic pollutants, and suspended particles, which are difficult to treat and have high standards for up-to-standard discharge. The scientificity of reagent selection directly determines the treatment effect and operation cost. Previously, the electronic factory used conventional reagents for wastewater treatment, which could basically meet the up-to-standard requirements, but had problems such as low treatment efficiency, loose flocs, and large sludge output, and was in urgent need of a more efficient and adaptable customized solution. Upon learning of the demand, Jiangsu Hengfeng quickly set up a professional technical team to conduct in-depth research on the factory's production site, comprehensively analyzing the wastewater quality characteristics, pollutant composition, and shortcomings of the existing treatment process. Different from the traditional treatment logic for electronic factory wastewater, the technical team found that the wastewater of this electronic factory has the colloidal characteristics of low concentration and high charge density, and conventional medium and low ionicity PAM could not fully exert the charge neutralization effect, making it impossible to efficiently capture pollutant particles. Based on the research results, the technical team of Jiangsu Hengfeng accurately matched the wastewater characteristics, selected the company's high-ionicity cationic PAM product pertinently, designed an exclusive customized wastewater treatment solution, and carried out multiple rounds of parallel experiments to conduct a comprehensive performance comparison with the agents currently used on-site by the factory. The experimental process strictly followed the standard procedure, focusing on monitoring core indicators such as flocculation speed, floc strength, suspended solids (SS) removal rate, COD removal rate, and sludge output to ensure the authenticity and reliability of the data. The experimental results show that Jiangsu Hengfeng's high-ionicity cationic PAM product has shown an unexpectedly high treatment efficiency: compared with the existing on-site agents, the flocculation speed is increased by more than 4 times, visible dense flocs can be formed in 30 seconds, and full sedimentation is completed within 2 minutes, greatly shortening the treatment cycle; the SS removal rate and COD removal rate are increased by more than 25% and 30% respectively, and the effluent quality is more stable, far exceeding the industry discharge standard; at the same time, the sludge output is reduced by more than 60%, and the sludge moisture content is reduced to below 92%, significantly reducing the subsequent sludge disposal cost and achieving the dual improvement of environmental and economic benefits. It is worth noting that this achievement has broken the traditional industry cognition that "medium and low ionicty PAM is preferred for electronic factory wastewater treatment". According to the technical director of Jiangsu Hengfeng, in traditional electronic factory wastewater treatment, medium and low ionicty cationic PAM is mostly selected, which is considered to balance charge neutralization and adsorption bridging effects and adapt to the characteristics of most electronic wastewater. However, due to the special charge density of pollutants in the wastewater of the electronic factory served this time, the high-ionicity cationic PAM, with its highly extended molecular chain structure and strong charge neutralization capacity, can quickly destroy the colloidal stability of pollutants and form dense flocs, thus achieving a better treatment effect, which confirms the core logic of "water quality adaptation first" in reagent selection. The successful experiment of this customized solution not only demonstrates Jiangsu Hengfeng's R&D strength and customized service capacity in the fine chemical field, but also provides a new idea for wastewater treatment of similar electronic factories — breaking the inherent selection thinking, and realizing the optimal balance between wastewater treatment efficiency and cost through accurate judgment of water quality characteristics and scientific matching of reagent models. Adhering to the concept of "technological innovation empowers green development", Jiangsu Hengfeng has been deeply engaged in the R&D of water treatment reagents and the design of customized solutions. In the future, it will continue to focus on the pain points of industrial wastewater treatment, launch more efficient, environmentally friendly and economical solutions, help enterprises achieve green and low-carbon production, and contribute Hengfeng's strength to ecological environmental protection.  

A large textile dyeing factory recently upgraded its Dissolved Air Flotation (DAF) system to improve wastewater clarification performance. However, shortly after commissioning, the flotation system experienced unstable sludge separation, high effluent turbidity, and frequent scraper blockage.   By introducing Hengfeng Flocculant C9202 and implementing on-site process optimization, the plant successfully restored stable operation and achieved continuous, compliant discharge.   Site Overview   Industry: Textile dyeing & finishing Wastewater capacity: 2,500–3,000 m³/day   Wastewater characteristics: High COD (3,500–4,200 mg/L), suspended solids 1,200–1,800 mg/L, strong color, high surfactant content, and fine colloidal particles typical of dyeing processes.   Flotation system configuration: Two 150 m³/h Dissolved Air Flotation (DAF) units PAC prepared at 5% concentration Polymer manually prepared at 0.1% concentration Designed hydraulic retention time: 25–30 minutes   Initial Issues: Flotation retention time exceeded 40 minutes. Sludge layer was thin and unstable. Effluent SS fluctuated between 250–400 mg/L. Sludge moisture remained above 82%. Sludge accumulation frequently caused scraper blockage, leading to intermittent production interruptions.   Problem Analysis   After on-site inspection and process monitoring, our technical team identified several key causes:   1. Insufficient Floc Strength The previously used polymer had relatively low molecular weight and charge density. The formed flocs were small and fragile, easily breaking under hydraulic shear and reducing bubble attachment efficiency.   2. Improper Coagulation–Flocculation Coordination PAC dosage fluctuated between 40–50 kg/h due to manual adjustment, resulting in incomplete charge neutralization. Meanwhile, operators reduced polymer dosage out of concern for overdosing, leading to insufficient bridging.   3. High Surfactant Interference Textile wastewater contains dispersants and surfactants that weaken bubble–floc adhesion, requiring stronger and denser floc formation to ensure stable flotation.   4. Operator Misinterpretation Previous surface foaming was incorrectly attributed to polymer overdosing, when in fact it was caused by residual surfactants. This misunderstanding led to chronic under-dosing and unstable clarification performance.   Technical Solution   Optimized Chemical Strategy   Hengfeng introduced a coordinated PAC + C9202 dosing program.   PAC was maintained at 5% concentration with a stabilized dosage of 65–75 kg/h to ensure sufficient destabilization of colloids.   Hengfeng Flocculant C9202 was prepared at 0.15% concentration with proper aging time of at least 60 minutes. The polymer dosage was dynamically adjusted between 3.5–4.5 kg/h (dry basis equivalent), based on floc formation and effluent clarity.   C9202, with optimized cationic charge density and higher molecular weight, significantly enhanced bridging capacity and produced larger, more compact flocs suitable for flotation systems.   Dosing Point Optimization   PAC was injected at the rapid mixing tank inlet to ensure full charge neutralization.   C9202 was added in the slow mixing zone before DAF entry, reducing shear intensity and preserving floc integrity before contact with dissolved air bubbles.   Operator Training & Standardization   Our team conducted on-site training to:   Standardize solution preparation procedures   Clarify correct interpretation of foam phenomena   Establish visual floc assessment guidelines   Implement routine dosing records and adjustment protocols   This eliminated inconsistent manual operations and ensured stable chemical control.   Performance Results   After three days of process optimization and continuous monitoring:   Flotation retention time returned to the designed 25–28 minutes. Effluent suspended solids decreased steadily to below 80 mg/L. COD removal efficiency improved to approximately 70–75%. Sludge moisture content decreased to 75–78%, improving downstream dewatering performance. The sludge layer became thick, uniform, and stable, without collapse or “floating patch” defects. Scraper blockage was eliminated, and uninterrupted production was achieved.   The DAF system resumed stable operation, meeting discharge standards while reducing operational risk.   Project Outcome   Through formulation optimization, dosing control, and operator training, Hengfeng successfully transformed an unstable flotation system into a reliable, continuous wastewater treatment process.   This project demonstrated that flotation efficiency depends not only on equipment design, but also on proper chemical synergy, correct dosing strategy, and field-level technical expertise.   Hengfeng Commitment   At Hengfeng, we provide more than flocculants —   We deliver complete process solutions supported by:   • Advanced polymer technology • Site-specific dosage optimization • On-site technical guidance • Long-term operational support   With Hengfeng Flocculant C9202, textile wastewater flotation systems can achieve higher efficiency, improved sludge performance, and sustainable, stable operation.

In the food industry, caramel is more than just a basic ingredient; it is a product that requires precise control over formulation and processing. From the high-temperature reaction of sugar or glucose to the final stabilization of color and flavor, caramel manufacturing involves complex chemical and physical changes. Alongside product quality, manufacturers are increasingly challenged by environmental management issues, particularly the treatment of high-strength wastewater generated during production. Caramel manufacturing wastewater is typically characterized by deep color, high organic content, and finely dispersed suspended solids. Unreacted sugars, caramel pigments, and colloidal substances remain highly stable in water, making natural sedimentation ineffective. Traditional physical separation methods often struggle to achieve consistent results, leading to high turbidity in treated water, excessive sludge volumes, and unstable operation of downstream treatment systems. Under these conditions, polyacrylamide (PAM) has proven to be an effective and reliable solution in caramel manufacturing wastewater treatment. As a high-molecular-weight polymer flocculant, PAM works by extending its molecular chains in water and binding dispersed particles together through adsorption and bridging mechanisms. This transforms fine, stable particles into larger and denser flocs, significantly improving solid–liquid separation efficiency.   A food manufacturer specializing in liquid caramel color once faced persistent challenges with unstable clarification performance and fluctuating effluent quality. Even with increased dosages of inorganic coagulants, the sedimentation process remained inefficient, while operating costs and sludge disposal volumes continued to rise. After introducing a properly selected polyacrylamide product into the clarification stage, floc formation became faster and more uniform. Suspended caramel particles settled more rapidly, effluent clarity improved noticeably, and the overall system became easier to control and maintain. Beyond immediate improvements in turbidity and color removal, the application of PAM delivered broader operational benefits. By stabilizing the pretreatment process, the treated wastewater entering downstream biological or advanced treatment units became more consistent in quality. This reduction in hydraulic and organic load fluctuations helped protect the entire treatment system, reduced operational risks, and improved long-term reliability. As environmental regulations continue to tighten, caramel manufacturers can no longer rely on short-term or reactive wastewater treatment strategies. Achieving stable compliance while maintaining economic efficiency has become a core operational objective. In this context, polyacrylamide is not merely an auxiliary chemical but a functional component that actively supports process optimization. With proper product selection, controlled dosing, and standardized operation, PAM can deliver sustained value in caramel manufacturing applications. Its contribution goes beyond meeting discharge standards; it enables a more stable, efficient, and manageable production environment. This is why polyacrylamide has become an increasingly important and widely adopted solution within the caramel manufacturing industry.