krwater

 In summer, high temperatures cause rapid microbial growth in circulating cooling water systems, leading to biofouling, pipe blockage, and under‑deposit corrosion. Biocides/algaecides are divided into oxidizing and non‑oxidizing types, typically applied via shock dosing or alternating dosing strategies. Kerui Chemical ( krhedp.com ) offers a biocide/algaecide product line including: Oxidizing biocides: Such as high‑efficiency chlorine tablets, bromochlorodimethylhydantoin (BCDMH), chlorine dioxide precursors – broad‑spectrum, fast‑acting. Non‑oxidizing biocides: Isothiazolinone, quaternary ammonium salts, glutaraldehyde – strong biofilm penetration. Alternating with oxidizers prevents microbial resistance. Slime stripper: Special surfactant formulation that quickly removes attached biofouling and cleans heat exchanger surfaces. Recommended program: In summer, alternate oxidizing and non‑oxidizing biocides 2–3 times each per month, plus slime stripper once a month. ...

 Wastewater from printing & dyeing, papermaking, and leather industries has high color intensity and complex composition. Conventional flocculation/sedimentation often fails to meet discharge standards. Decolorants separate chromophores from water through adsorption, complexation, and charge neutralization. Kerui Chemical ( krhedp.com ) provides dicyandiamide‑type and modified organosilicon high‑efficiency decolorants: Dicyandiamide‑type decolorant: Over 98% decolorization for reactive dyes, acid dyes, and direct dyes, while significantly reducing COD and suspended solids. Modified organosilicon type: Suitable for high‑concentration, refractory wastewater; combines demulsification and flocculation, especially for emulsified dye wastewater. Usage tips: Adjust pH to 6–9 first; dosage 50–300 ppm depending on raw water color; works best with PAC/PAM. Customer feedback: After using Kerui Chemical decolorant, a printing plant in Guangdong reduced effluent color from 50...

 In industrial circulating cooling water systems, corrosion of metal materials (carbon steel, copper, stainless steel, etc.) can cause equipment leakage, production interruptions, and even safety accidents. Scaling and corrosion often promote each other. An ideal corrosion/scale inhibitor should combine inhibition, scale prevention, and dispersion functions. Kerui Chemical ( krhedp.com ) has developed a series of corrosion‑scale inhibitors for different conditions: Molybdenum‑based inhibitor: Suitable for high chloride, high conductivity water; forms a dense oxide film with excellent corrosion resistance. Zinc‑salt compounded type: Fast film formation, especially for system pre‑film treatment and low‑pH conditions. All‑organic formula: Heavy‑metal free (no chromium, no zinc), environmentally safe, suitable for plants with discharge restrictions. Case study: In a petrochemical plant’s circulating water system, after using Kerui Chemical KR‑603 corrosion‑scale inhibitor, ...

 Membrane scaling is a major issue affecting water production rate and equipment life in reverse osmosis (RO) systems. Common scales include calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, and silica scale. Correct selection of antiscalant can effectively delay scaling and extend membrane cleaning cycles. Kerui Chemical ( krhedp.com ) offers a series of RO antiscalants with the following advantages: Broad-spectrum scale inhibition: Excellent dispersion and inhibition for calcium carbonate, calcium sulfate, barium sulfate, calcium fluoride, etc., especially suitable for high-hardness and high-alkalinity water. Good compatibility: Compatible with common membrane materials (polyamide composite, cellulose acetate) and flocculants (cationic PAM, etc.), no precipitation or gel fouling. Eco-friendly formulation: Phosphorus-free or low‑phosphorus design meets stringent wastewater discharge standards and reduces post‑treatment burden. Easy to use: Sup...

  On June 23, journalists learned from the Shandong Provincial Water Resources Department that the department, together with the Shandong Provincial Development and Reform Commission, Shandong Provincial Department of Science and Technology, and five other departments, recently issued the "Shandong Water-Saving Industry Development Plan," proposing ideas, layout, direction, and pathways for the high-quality development of the water-saving industry. By 2027, the province's water-saving industry scale is expected to reach 100 billion yuan , and by 2035, the scale is set to double over the decade. Key targets: By 2027: Form more than 10 featured and competitive water-saving industrial clusters (parks); cultivate more than 2 national or provincial water-saving technology innovation platforms; establish a pilot zone for high-quality development of the water-saving industry in the Yellow River Basin. By 2035: Double the industry scale compared to 2027; build mor...

 What are the main application fields of your company's products? Are they applied in seawater desalination and offshore oil and gas extraction? Dear investor, hello! Taihe Technologies' water treatment chemicals are mainly applied in the fields of electricity, metallurgy, chemicals, oil extraction, and daily chemicals. In the field of seawater desalination, there are two forms of desalination: membrane-based and distillation-based. For membrane-based seawater desalination, Taihe Technologies' water treatment chemicals can be used as membrane scale inhibitors. For distillation-based seawater desalination, they can be used as scale inhibitors in seawater flash evaporation. In the field of offshore oil extraction, Taihe Technologies' water treatment chemicals can be used for scale inhibition and corrosion inhibition in oilfield reinjection water and oil transmission pipelines. In offshore oil extraction where barium and strontium content is high, they can be...

An investor recently asked on an interactive platform: "If mining causes water pollution, how would China Water Environment Protection (CWEP) handle this probla given your years of governance experience and scientific research technology? And how would you choose when interests and harm stand on opposite sides?" CWEP responded:"Dear investor, hello! CWEP is an ecological environment governance service provider and a national-level 'Little Giant' enterprise. In the field of industrial water treatment, we provide services to national key industrial clients, including petrochaicals, nuclear power, new energy, metallurgy, coal chaicals, coal mines, and thermal power, covering the entire process from raw water, daineralized water, and wastewater treatment to reuse and zero discharge. Water pollution caused by mining mainly consists of industrial wastewater, including pit water, mineral processing wastewater, and mine water. Our independently developed ful...

 Iron contamination is one of the common fouling problems in reverse osmosis (RO) system operation. It mainly originates from soluble ferrous ions (Fe²⁺) in the feed water that oxidize to form insoluble trivalent iron colloids/hydroxides (Fe(OH)₃), or from slime produced by the metabolic products of iron bacteria. These substances deposit on the membrane surface, block the feed channel, or even enter the membrane pores, leading to reduced system water production, increased pressure differential, and decreased desalination rate. Effectively cleaning iron contaminants requires methods specifically tailored to their chemical properties. Iron contaminants (especially Fe³⁺ hydroxides and oxides) have very low solubility under conventional acid-base conditions. The key to cleaning lies in utilizing specific chemical agents: Acid dissolution + chelation: The most commonly used and relatively gentle acidic cleaning agent is citric acid. It provides an acidic environment whi...

 In the water treatment process, polyaluminum chloride (PAC) and polyacrylamide (PAM) — known as the "golden duo" — can significantly enhance flocculation and sedimentation. However, improper operation can lead to chemical waste or even treatment failure. Here are the core precautions that must be followed: PAC (Polyaluminum Chloride) Usage Points: Dissolution control: Use tap water or clean water for dissolution (avoid highly turbid water), with a recommended concentration of 5–20%. Dosing sequence: Always add PAC first to complete charge neutralization, followed by PAM with an interval of ≥60 seconds. Water temperature effect: When temperatures drop below 5°C, the reaction rate decreases sharply, requiring a 10–20% increase in dosage. Optimal pH range: 6.5–8.5; if outside this range, adjust using acids or alkalis. PAM (Polyacrylamide) Operating Prohibitions: Dissolution duration: Anionic types require stirring for ≥40 minutes, cationic types for ≥60 minutes. Mecha...

  產品概述 羥乙基乙二胺三甲叉膦酸鈉鹽（Aminoethyl Ethanolamine Tri(methylene phosphonic acid) Sodium Salt，簡稱 AEEA 有機膦鈉鹽），分子式為 C₇H₁₆N₂O₁₀P₃Na₅，相對分子質量為 496。 性能與用途 羥乙基乙二胺三甲叉膦酸鈉鹽是一種多用途阻垢劑、強力螯合劑和優良的碳酸鈣、硫酸鋇阻垢劑。產品易溶於水，無毒，對鈣和鐵有優異的耐受性，且產品耐高溫。在油田領域通常作為阻垢緩蝕劑，阻止在生產管道、完井系統和加工設施出現結垢、沉澱和粘附 。 技術指標 外觀為淡黃色透明液體，活性組分（以酸計）含量 ≥32.0%，活性組分（以鹽計）含量 ≥42.0%，固含量 ≥50.0%，氯化物含量 ≤6.0%，鐵含量 ≤20 mg/L，密度 ≥1.30 g/cm³，pH 值（10 g/L 水溶液）為 5.0-7.0 。 使用方法 本產品常與其他有機膦酸、聚羧酸或鹽等復配成有機水處理劑，用於各種不同水質條件下的循環冷卻水系統。用量以 1 ~ 20 mg/L 為佳；作緩蝕劑使用時，用量為 20 ~ 60 mg/L 。 包裝與貯存 液體用塑料桶包裝，每桶 25 kg 或 250 kg。貯於室內陰涼通風處，防潮、嚴防曝曬，貯存期十二個月 。 安全防護 操作時注意勞動保護，應避免與皮膚、眼睛接觸，接觸後用大量清水沖洗 。 了解更多，到山東凱瑞化學官網 kairuiwater.com 上查看

  產品概述 六亞甲基二胺四亞甲基膦酸（HexaMethyleneDiamineTetra (MethylenePhosphonic Acid)，簡稱 HDTMPA 或 HMDTMPA），CAS 號為 23605-74-5，分子式為 C₁₀H₂₈N₂O₁₂P₄，相對分子質量為 492.3。 性能與用途 HDTMPA 能抑制各種水垢（如碳酸鈣垢、硫酸鈣垢、硫酸鋇垢和氧化鐵垢等）的生成，但在水處理中主要用來阻抑硫酸鈣和硫酸鋇垢。在各種有機膦酸中，其阻硫酸鈣垢的性能最為突出，不僅阻垢率高，有效時間長，因此特別適用於油田的擠壓處理中。HDTMPA 也可用於鍋爐水處理中 。 常溫下 HDTMPA 為白色結晶性粉末，微溶於水，其溶解度在室溫下小於 5% 。 HDTMPA·K₆（己二胺四甲叉膦酸鉀鹽）具有很高的溶解度，可阻止水中成垢鹽類形成水垢，是良好的硫酸鈣阻垢劑，尤其適用高鹼高 pH 條件，特別適應於鍋爐水處理、反滲透膜的阻垢劑 。 技術指標 外觀為白色結晶性粉末，活性組分（以 HDTMPA-計）含量 ≥97.0%，氯化物含量 ≤0.5%，鐵含量 ≤35.0 mg/L，乾燥失重 ≤0.3%，pH（1% 水溶液）≤2.0 。 包裝與貯存 用複合塑編袋包裝或符合出口環保要求的包裝，每袋淨重 25 kg。貯存於陰涼乾燥處，貯存期十二個月 。 安全防護 本品為酸性固體，操作時注意勞動保護，應避免與皮膚、眼睛接觸，接觸後用大量清水沖洗 。 了解更多，到山東凱瑞化學官網 kairuiwater.com 上查看

  產品概述 羥乙基胺二亞甲基膦酸（Hydroxyethylamino-Di(Methylene Phosphonic Acid)，簡稱 HEMPA），CAS 號為 5995-42-6，分子式為 C₄H₁₃NO₇P₂，相對分子質量為 249。 性能與用途 HEMPA（羥乙基胺二亞甲基膦酸）是一種有機磷酸，具有良好的螯合、阻垢和緩蝕作用。主要用於油田、洗滌劑/肥皂和金屬處理等，尤其適用於溶解鐵和鈣含量高的水系統。它還與甲醇/水溶液相容，當與其他水處理化學品一起復配時，顯示出良好的協同效應 。 技術指標 外觀為無色或淡黃色透明液體，活性組分含量 ≥50.0% 或 ≥60.0%，氯化物含量 ≤5.0%，鐵含量 ≤20.0 mg/L，密度 ≥1.20 g/cm³ 或 ≥1.30 g/cm³，pH（1% 水溶液）≤2.0 。 使用方法 HEMPA 常與其他有機磷、聚羧酸和鹽等復配用於不同領域 。 包裝與貯存 用塑料桶包裝，每桶 250 kg；或者用 1250 kg 噸桶包裝。貯於室內陰涼通風處，防潮、嚴防曝曬，貯存期十二個月 。 安全防護 本品為酸性，操作時注意勞動保護，應避免與皮膚、眼睛接觸，接觸後應立即用大量清水沖洗 。 了解更多，到山東凱瑞化學官網 kairuiwater.com 上查看

  產品概述 雙 1,6-亞己基三胺五甲叉膦酸（Bis(HexaMethylene Triamine Penta (Methylene Phosphonic Acid))，簡稱 BHMTPMPA），CAS 號為 34690-00-1，分子式為 C₁₇H₄₄O₁₅N₃P₅，相對分子質量為 685。 性能與用途 BHMTPMPA 是高效的螯合型阻垢劑，對碳酸鹽垢和硫酸鹽垢具有良好的阻垢效果。在較寬的 pH 範圍和 120℃ 高溫下有極佳的水溶性和熱穩定性，對鈣離子容忍度高。可用作油田水處理的緩蝕阻垢劑、工業循環冷卻水和鍋爐水的阻垢緩蝕劑 。 本品可耐受 120℃ 以上高溫，適配 2000 mg/L 以上高鈣水質，阻垢緩蝕雙效合一，符合行業標準且環保高效，在鋼廠、油田等高難度水處理中應用廣泛 。 技術指標 符合 GB/T 22591-2008 標準，外觀為琥珀色液體，活性組分含量為 45.0-50.0%，亞磷酸含量 ≤3.5%，氯化物含量 ≤6.0%，pH（1% 水溶液）≤2.0，密度 ≥1.20 g/cm³ 。 使用方法 BHMTPMPA 可單獨使用或與聚羧酸型阻垢分散劑配合使用 。 包裝與貯存 用塑料桶包裝，每桶 25 kg 或 250 kg。貯於室內陰涼處，貯存期為十二個月 。 安全防護 本品為酸性，操作時注意勞動保護，應避免與皮膚、眼睛接觸，接觸後用大量清水沖洗 。 了解更多，到山東凱瑞化學官網 kairuiwater.com 上查看

  產品概述 2-膦酸丁烷-1,2,4-三羧酸（2-Phosphonobutane-1,2,4-Tricarboxylic Acid，簡稱 PBTC 或 PBTCA）是一種性能優異的膦羧酸型阻垢緩蝕劑，CAS 號為 37971-36-1。 性能與用途 PBTC 含磷量低，但性能優於傳統的有機膦酸，特別適合處理高溫、高硬度、高鹼度的「三高」水質 。 外觀為白色結晶性粉末，易溶於水（≥50%，20℃），活性酸含量 ≥50%（工業級液體）或 ≥98%（固體粉末），pH（1% 水溶液）為 1.5-2.5，密度（20℃，50% 液體）為 1.27-1.33 g/cm³，熱分解溫度＞200℃ 。 典型應用 循環冷卻水：常規 5-15 mg/L，高硬度水 15-30 mg/L 鍋爐水：與聚合物分散劑復配 3-8 mg/L 油田注水：與聚合物驅替劑協同 10-20 mg/L RO 膜系統：作阻垢劑 2-4 mg/L（LSI ≤ 2.5） 鋼鐵、化工、中央空調、海水淡化預處理等領域 了解更多，到山東凱瑞化學官網 kairuiwater.com 上查看

  產品概述 羥基乙叉二膦酸（1-Hydroxy Ethylidene-1,1-Diphosphonic Acid，簡稱 HEDP）是一種有機膦酸類阻垢緩蝕劑，CAS 號為 2809-21-4，分子式為 C₂H₈O₇P₂，相對分子質量為 206.03。 性能與用途 HEDP 能與鐵、銅、鋅等多種金屬離子形成穩定的絡合物，能溶解金屬表面的氧化物。在 250℃ 下仍能起到良好的緩蝕阻垢作用，在高 pH 下仍很穩定，不易水解，一般光熱條件下不易分解。耐酸鹼性、耐氯氧化性能較其他有機膦酸（鹽）好 。 HEDP 可與水中金屬離子，尤其是鈣離子形成六圓環螯合物，因而具較好的阻垢效果並具明顯的溶限效應，當和其他水處理劑複合使用時，表現出理想的協同效應。固體 HEDP 屬於高純產品，適用於冬季嚴寒地區，特別適用於電子行業的清洗劑和日用化學品添加劑 。 HEDP 廣泛應用於電力、化工、冶金、化肥等工業循環冷卻水系統及中、低壓鍋爐、油田注水及輸油管線的阻垢和緩蝕；在輕紡工業中，可作金屬和非金屬的清洗劑，漂染工業的過氧化物穩定劑和固色劑，無氰電鍍工業的絡合劑，醫藥行業作放射性元素的攜帶劑 。 技術指標 本品符合 GB/T 26324-2010 及 HG/T 3537-2010 標準，外觀為無色或淡黃色透明液體或白色晶體，活性組分含量 ≥50.0%（液體）或 ≥60.0%/90.0%（固體），pH 值（1% 水溶液）為 1.5-2.0 。 使用方法 HEDP 作阻垢劑一般使用濃度 1 ~ 10 mg/L，作緩蝕劑一般使用濃度 10 ~ 50 mg/L，作清洗劑一般使用濃度 1000~2000 mg/L；通常與聚羧酸型阻垢分散劑配合使用 。 包裝與貯存 液體用塑料桶包裝，每桶 30 kg 或 250 kg；固體用內襯聚乙烯袋的塑料編織袋包裝，每袋淨重 25 kg。貯於室內陰涼處，貯存期十二個月 。 安全防護 本品為酸性，操作時注意勞動保護，應避免與皮膚、眼睛接觸，接觸後用大量清水沖洗 。 了解更多，到山東凱瑞化學官網 kairuiwater.com 上查看