Treatment of Paper and Pulp Wastewater Using Coagulation-Flocculation with Alum: Optimization and Performance Evaluation

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2024-12-15 DOI:10.1007/s11270-024-07688-z

Kawther Jassim AlMuhanna, Fahad Asiri, Mousa Abu-Arabi, Hamad AlMansour

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Abstract

Industrial wastewater poses significant environmental and health risks due to its diverse pollutant composition. This study investigates the effectiveness of coagulation-flocculation treatment using aluminum sulfate (alum) for treating paper and pulp wastewater. The results highlight the significance of pre-biological treatment, pH optimization, alum dosages, and pre-filtration in enhancing removal efficiency for total solids (TS), total dissolved solids (TDS), total organic carbon (TOC), and ion concentrations. Pre-filtration significantly improved treatment performance, resulting in a 67% reduction in TS. Ion chromatography provided insights into post-treatment ion concentration changes. Under optimal conditions, including a treatment with 500 ppm alum dosage, alkaline pH of 11, and pre-filtration, the highest TS and TOC removal efficiencies were (52%) and (77%), while TDS reduction reached a maximum of 40% at lower alum dosages (100 mg/L). This study contributes crucial insights into optimizing alum coagulation-flocculation for paper and pulp wastewater treatment, offering potential solutions to mitigate industrial pollution and secure water resources.

Graphical Abstract

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利用明矾混凝-絮凝技术处理造纸和纸浆废水：优化和性能评估

工业废水因其污染物成分的多样性而对环境和健康构成了重大风险。本研究调查了使用硫酸铝（明矾）进行混凝-絮凝处理以处理造纸和纸浆废水的效果。结果表明，预生物处理、pH 值优化、明矾用量和预过滤对提高总固体 (TS)、总溶解固体 (TDS)、总有机碳 (TOC) 和离子浓度的去除效率非常重要。预过滤大大提高了处理性能，使 TS 降低了 67%。离子色谱法有助于深入了解处理后离子浓度的变化。在最佳条件下（包括明矾用量为 500 ppm、pH 值为 11 的碱性处理和预过滤），TS 和 TOC 的去除率最高，分别为 52% 和 77%，而在明矾用量较低（100 mg/L）时，TDS 的去除率最高可达 40%。这项研究为优化造纸和纸浆废水处理中的明矾混凝-絮凝法提供了重要见解，为减轻工业污染和保护水资源提供了潜在的解决方案。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.