## 1 Introduction  
Beer is the predominant alcoholic beverage globally, and it plays a crucial role in the economies of numerous countries [1, 2]. China is the world's leading producer of beer,manufacturing 360 million kiloliters annually in 2022 [2]. Beer manufacture involves the exploitation of a liquid called word, which contains carbohydrates. This liquid undergoes fermentation, a biological process helped by yeast, in which the carbohydrates in the word are transformed into ethanol and carbon dioxide. During production, yeast functions under anaerobic conditions to catalyze the conversion of sugar in the word into ethanol and carbon dioxide. The average fermenting process lasts for almost one week [3,4]. The beer production process involves several stages, including malting, milling, mashing, wort boiling and filtering, hopping, fermentation and maturation, stabilization, clarifying, and packaging. Boiling and clarifying of wort resulted in the generation of around 3 to 10 L of brewery wastewater (BWW) for every liter of beer produced [2]. This wastewater (WW) is characterized in terms of quality by a high concentration of organic matter (2000-10,000 mg\(\cdot\)L\({}^{-1}\)). The range concentration of biological oxygen demand (BOD) in BWW is between 1200 mg\(\cdot\)L\({}^{-1}\) and 3600 mg\(\cdot\)L\({}^{-1}\). The pH of this WW varies between 3 and 12. Clean-in-Place (CIP) sanitization process has an impact on this parameter. Breweries employ standardized CIP cycles. The initial phase of sterilizing fermentation tanks commences with an acid cycle and concludes with an alkaline cycle. These CIP cycles are also distinguished by elevated temperatures ranging from 18 to 40 \({}^{\circ}\)C.  
BWW also contains significant levels of Ntot, ranging from 25 mg\(\cdot\)L\({}^{-1}\) to 80 mg\(\cdot\)L\({}^{-1}\), and Ptot, ranging from 10 mg\(\cdot\)L\({}^{-1}\) to 50 mg\(\cdot\)L\({}^{-1}\), because of utilizing processed raw materials [5; 6; 7]. Due to the presence of these pollutants, untreated wastewater can have a detrimental impact on the ecosystem. When breweries are connected to the sewer system, the most appropriate approach for reducing chemical oxygen demand (COD), BOD, and total phosphorus (Ptot) is to first implement pre-treatment methods [7; 8; 9], and then use biological processes [10; 11; 12]. Preliminary treatments are essential to enhance the quality of the WW, hence enhancing the potential of the organic matter to be broken down by microorganisms in conventional activated sludge plants. Moreover, it is essential to modify the pH in order to facilitate an effective subsequent biological process in wastewater treatment plants (WWTPs). The ideal pH range for BWW is from six to nine, which enables it to be discharged into the sewage system without causing harm, and it can then undergo additional treatment at WWTPs. Pre-treatment methods including sedimentation, flow equalization, and filtering are commonly employed in dealing with suspended particles in BWW [4; 9]. However, their effectiveness is limited to addressing these specific particles. In contrast, chemical methods such as coagulation and flocculation have been proven to be extremely efficient in removing pollutants in both liquid and solid phases [6; 7]. Coagulation is a commonly used physicochemical technique to remove colloidal particles and color from wastewater. In the context of BWW treatment, coagulation pertains to the destabilization of particles through the introduction of a coagulant. Perikinetic coagulation, also known as the creation of tiny aggregates by the Brownian motion of particles, may occur during this phase [9; 13]. For instance, aluminum chlorohydrate and polyamine were tested as coagulants for the removal of particulate COD and turbidity in BWW [9]. The results highlighted that the effectiveness of using the combined coagulation dosage of polyamine-aluminum chlorohydrate (PAC) treatment was 90% and 59% for turbidity and COD, respectively, comparable to the use of polyamine alone (75% and 50%, respectively).