Miraflores Adriana Hernández, Gómez Karina Hernández, Muro Claudia, Hernández María Claudia Delgado, Blancas Vianney Díaz, Álvarez Sánchez Jesús, Isordia German Eduardo Devora
Tecnológico Nacional de México, Instituto Tecnológico de Toluca, Av. Tecnológico S/N, Col. Agrícola Bellavista, Metepec 52149, Mexico.
Departamento de Ciencias del Agua y Medio Ambiente, Instituto Tecnológico de Sonora, 5 de febrero 818 sur Col. Centro, Cd Obregón 85000, Mexico.
Membranes (Basel). 2025 Apr 7;15(4):116. doi: 10.3390/membranes15040116.
A membrane system was applied for ultrapure water production from the treatment of saline effluent from the canned food industry. The industrial effluent presented a high saline concentration, including sodium chloride, calcium carbonate, calcium sulfates, and magnesium. The effluent was treated using a system of reverse osmosis (RO) and a post-treatment process consisting of ion exchange resins (IEXRs). The RO was accompanied by the addition of a hexametaphosphate dose (2, 6, and 10 mg/L) as an antiscalant to avoid the RO membrane scaling by minerals. In turn, IEXRs were used for water deionization to produce ultrapure water with a reduced concentration of monovalent ions. The antiscalant dose was 6 mg/L, producing clean water from RO permeates with an efficiency of 65-70%. The brine from RO was projected for its reuse in food industry processes. The clean water quality from RO showed 20% total dissolved solids (TDS) removal (equivalent to salts). The antiscalant inhibited the formation of calcium salt incrustation > 200 mg/L, showing low fouling. In turn, anionic resins removed 99.8% of chloride ions, whereas the monovalent salts were removed by a mix of cationic-anionic resin, producing ultrapure water with electrical conductivity < 3.3 µS/cm. The cost of ultrapure water production was 2.62 USD/m.
一种膜系统被应用于从罐头食品工业的含盐废水处理中生产超纯水。该工业废水呈现出高盐浓度，包括氯化钠、碳酸钙、硫酸钙和镁。废水通过反渗透（RO）系统和由离子交换树脂（IEXR）组成的后处理工艺进行处理。在RO过程中添加了六偏磷酸钠剂量（2、6和10mg/L）作为阻垢剂，以避免RO膜被矿物质结垢。反过来，IEXR用于水的去离子化，以生产单价离子浓度降低的超纯水。阻垢剂剂量为6mg/L，从RO渗透液中生产出清洁水，效率为65 - 70%。RO产生的盐水计划在食品工业过程中再利用。RO的清洁水质量显示总溶解固体（TDS）去除率为20%（相当于盐）。阻垢剂抑制了>200mg/L的钙盐结垢形成，显示出低污垢。反过来，阴离子树脂去除了99.8%的氯离子，而单价盐通过阳离子 - 阴离子树脂混合物去除，生产出电导率<3.3µS/cm的超纯水。超纯水生产成本为2.62美元/立方米。
