Neutralization Of Wastewater Research Articles

Removal, conversion and utilization technologies of alkali components in bayer red mud.

Bayer red mud is a highly alkaline industrial solid waste generated during alumina production, and its massive discharge and stockpiling poses significant environmental risks. The strong alkalinity of red mud is a primary challenge limiting its effective utilization. This study systematically analyzes the composition and characteristics of alkaline components in red mud, emphasizing the roles of soluble free alkali and chemically bound alkali in regulating its alkalinity. A comprehensive review of current dealkalization technologies, including acid neutralization, CO2 neutralization, and salt precipitation/replacement methods is presented, focusing on their chemical mechanisms, applicability, advantages, and limitations. Specially, this study present the concept of in-situ conversion and utilization of alkali and highlight the beneficial role of alkali components in red mud recycling. The latest technologies for the conversion and utilization of alkali components, including the special roles and principles of alkali in the reaction processes of cement clinker calcination, cement hydration, geopolymers were systematically summarized. Additionally, the environmental potential of red mud in acid wastewater neutralization and flue gas desulfurization is discussed. This study identifies the technical barriers that need to be solved urgently in the current research and proposes a key direction for future study on the regulation of alkali components in red mud.

Simultaneous Recovery of Vivianite and Humic Acids from Waste Activated Sludge via Ferric Trichloride Flocculation and Enzymatic Hydrolysis Co-Treatment

Synchronously recovering phosphorus as vivianite and humic acids (HAs) from waste activated sludge (WAS) is of great significance for the carbon neutralization of wastewater. In this study, flocculation, enzyme degradation (lysozyme/protease/amylase/cellulase in a 1:1:1:1 ratio), and pH adjustment were used to reclaim vivianite and HAs. After FeCl3 coagulation–precipitation and enzymatic hydrolysis of the sludge for 11 h, the supernatant was enriched with Fe2+ and PO43−, with the molar ratio of Fe2+:PO43− of 2.21. To improve the purity of the vivianite, the crude protein was separated at pI 6.0. The purity of the crystals reached a peak of 97.44 ± 0.04% at pH 7.5. HAs extracted from the residuals had a high affinity for metal adsorption, and the adsorption process was both endothermic and efficient. Overall, this study demonstrates the feasibility and effectiveness of the joint reclaiming of vivianite and HAs, providing new insights into multiple resource recovery from WAS.

The use of CO2 for the treatment of alkaline tunnel construction wastewater: Efficiency and influencing factors

Alkaline wastewater from tunnel construction can cause environmental problems when draining into water streams like rivers and lakes. Research interest in the neutralization of alkaline wastewater using CO2 based on the carbon utilization concept has been increasing. In this study, the effects of key parameters such as the flow rate (FR) of CO2, initial water temperature (T), pH, and turbidity (TURB) on CO2 neutralization of alkaline wastewater were investigated through laboratory experiments and field tests using alkaline wastewater collected from the Yunnan Dianzhong Water Diversion Engineering, China. Results revealed that 1.5 L min−1 was the optimal flow rate for CO2 gas. The water pH (p < 0.001) and TURB (p < 0.001) significantly affected the neutralization performance of CO2. The pH, TURB, electrical conductivity and total dissolved solids of alkaline wastewater can be effectively reduced by CO2. The least time required for the treatment was noted at a T, pH, and TURB of 20 °C, 10.5, and 80 NTU, respectively. Laboratory and field stability experiments have shown CO2 to be effective in reducing the pH of alkaline wastewater and consistently maintaining its pH within the discharge standard compliance range (6–9). A cost saving of $0.26 per 1 m3 of water was achieved comparing with neutralization of alkaline wastewater using citric acid. In summary, this study for the first time explored the efficiency and potential influencing factors for the treatment of alkaline tunnel construction wastewater using CO2. It proves the effectiveness and economic benefits of the proposed technology.

Electroneutralization desalination with spontaneous chemoelectric power generation

This study designs a novel electroneutralization desalination cell using reaction heat from acidic-alkaline wastewater neutralization to desalinate wastewater and generates chemoelectric power. Several key performance indicators are measured in terms of the energy, environmental and economic aspects of the system, including the ionic flux, the electrical energy produced, the electrical energy consumption for desalination, parasitic losses, overall energy conversion efficiency and desalination performance. The maximum peak power density is ∼31.5 mW/cm2 at 83.5 mA/cm2 and the desalination efficiency is 62 % using brine. The overall energy conversion efficiency is ∼81.8 % and the desalination followed the zero-order reaction. Assuming a 1.5 million litres per day treatment capacity integrated with reverse osmosis, the system has environmental and economic benefits, with 44.5 kg-CO₂eq greenhouse gas emissions per cubic meter of treated brine, and a discounted payback period of 4.2 years. This study demonstrates a pioneering electroneutralization technique for self-sufficient brine valorization and wastewater reclamation.

ТЕРМОДИНАМИЧЕСКИЙ АНАЛИЗ ОКИСЛИТЕЛЬНО – ВОССТАНОВИТЕЛЬНЫХ РЕАКЦИЙ, ПРОТЕКАЮЩИХ ПРИ ГАЛЬВАНОКОАГУЛЯЦИОННОЙ ОЧИСТКЕ СТОКОВ

Abstract. One of the most important environmental problems is the purification of industrial wastewater from heavy metal ions. Various methods are used to solve this problem: chemical, physico-chemical, sorption, but the most promising method for cleaning industrial wastewater containing heavy metal ions, namely copper, nickel and zinc, is the galvanocoagulation method. However, the literature does not sufficiently cover the processes of cementation of heavy metals on cathode loading. A physico-chemical approach to this process is necessary to confirm the process of separation of heavy metal ions from wastewater in the form of sediment and the creation of new industrial wastewater treatment schemes. The composition of the loading is essential in galvanocoagulation neutralization, therefore, in order to determine the effect of the type of active loading, a carbon mineral sorbent (SGN) obtained from ores of cryptocrystalline graphite (Noginsky deposit of the Krasnoyarsk Territory) was used. The studies were carried out in a galvanocoagulation module by passing wastewater through a loading consisting of a mixture of iron shavings and granules of carbon mineral sorbent based on ores of cryptocrystalline graphite (SGN). At the same time, the air dispersed in the lower part of the device was bubbled through the loading. As a result of the operation of the Fe-SGN short-circuited galvanic cell, iron scrap was dissolved and its intensive oxidation to Fe3+ by air oxygen. The article considers the mechanism of galvanocoagulation neutralization of wastewater based on thermodynamic analysis of redox reactions occurring during galvanocoagulation wastewater treatment.&#x0D; Subject of the study: both model and real wastewater from the production of electroplating coatings containing copper, zinc and nickel ions with the following concentrations were used: =60 mg/dm3; =15 mg/dm3; =20 mg/dm3&#x0D; Materials and methods: galvanocoagulation neutralization using a short-circuited Fe-SGN galvanic cell (carbon mineral sorbent)&#x0D; Results: the physico-chemical patterns of the galvanocoagulation process of wastewater treatment have been studied and the thermodynamic parameters of heavy metal ion reduction reactions have been determined&#x0D; Conclusions. It has been experimentally established that it is possible to intensify the process of galvanocoagulation of wastewater containing heavy metal ions by using a carbon mineral sorbent as a cathode loading, which reduces the processing time with a high purification effect and a difficult-to-dissolve precipitate is formed.

Study of the effectiveness of using a fine wastewater treatment plant at petrochemical production enterprises

The problem of treatment and neutralization of wastewater from chemical, petrochemical and oil refining industries is associated with the removing from them of suspended solid and plastic particles of pollution of various chemical natures, oil and petroleum products, heavy metals, surfactants, acids, alkalis, phenols and other harmful substances. To effectively treat water, various filters are used, which differ in parameters and characteristics. The purpose of this work is to determine the possibility of replacing cartridge filters used at PetroKazakhstan Oil Products LLP with easily regenerable bag filters. In the course of the research, it was found that the use of cartridge and bag filters contributes to more effective water treatment, in particular, from suspended sub- stances. When comparing them, we can say that the latter is advantageous in that it does not need to be changed when clogged, like a cartridge filter, but simply rinsed and used again in the technological chain. The bag element is quite simply washed in water, but if it is heavily clogged, it can be washed either in a solution of citric acid (20 g/l) or in an alkali solution (10 g/l).

OPTIMIZATION OF THE PROCESS OF SELECTION OF TECHNOLOGIES AND EQUIPMENT FOR PURIFICATION OF WASTEWATER OF ELECTROPLATE PRODUCTION

More and more attention is being paid to energy and resource efficiency issues, which is why for existing technological processes the solution of optimization problems comes to the fore in order to optimize material costs. No less important is the assessment of the human resource, as well a minimizing the possibility of errors at the stage of making a decision on the implementation / design of new processes. It is the environmental sphere that is associated with a high degree of investment risks and requires a careful approach to justifying the introduction of environmental technologies. As part of the work done, the concept of automated decision making was proposed and an economic and mathematical model was developed for solving the optimization problem for choosing a technology or equipment for wastewater treatment systems of an enterprise using the example of electrochemical enterprises (electroplating production) at the stage of justifying investments. As the main tool for processing input data, it is proposed to use software systems based on the use of partial-integer linear programming methods. As input parameters of the system, the initial concentrations of pollutants, volume flow and the required cleaning efficiency are selected. The main technologies for the treatment and neutralization of wastewater from galvanic production, which are currently used or included in the list of the best available technologies, are presented, and a model is proposed that allows the choice of methods and instrumentation for multi-stage treatment processes to achieve the required quality of discharged water with minimal integral costs for the creation and operation of the designed system. The proposed mathematical model can be used both as a training tool for training specialists in water treatment, and for management personnel in the process of selecting and justifying environmental protection measures or at the stage of supervision of equipment suppliers.

Decontamination of aeration station wastewater using ultraviolet radiation

The article discusses the treatment and neutralization of wastewater from aeration stations (Republic of Uzbekistan) using a physical method, using ultraviolet radiation of wastewater after mechanical and biological treatment, where liquid chlorine gas is currently used to neutralize wastewater, research work has been carried out on the selection of optimal parameters for the neutralization of wastewater with ultraviolet radiation. Currently, wastewater treatment with ultraviolet radiation is successfully used in countries such as China, Russia, Canada, the USA and South Korea.

Автоматизированная станция нейтрализации шахтных и подотвальных сбросов от ионов тяжелых металлов

The article describes a technological solution implemented as a fully automated station for neutralization of industrial wastewater that contains heavy metal ions, for example, water generated during mining of non-ferrous metal ores using underground or surface mining systems. This technology makes it possible to purify acidic wastewater from toxic metal ions, e.g. copper, zinc, iron to match the maximum permissible concentrations for fishery water bodies. The essence of the technology consists in saturation of the lime milk fed into the stream of adit effluents with carbon dioxide pumped together with the atmospheric air or produced by combustion of carbon-containing fuels. The presence of carbonate groups facilitates formation of practically insoluble dihydrocarbonates of heavy metals, particularly those of copper.

Технологические решения и опыт промышленной переработки жидких хромсодержащих отходов

Analysis of the list of liquid wastes of hazard classes I and II in the Federal Classification Catalog of waste (FCCW) showed that one of the most common wastes is wastewater, waste technological solutions containing chromium ions(III, VI). This type of waste accounts for up to 15% of the total amount of liquid technogenic waste of hazard classes I and II, formed as a result of the activities of electroplating and chemical enterprises. Hexavalent chromium compounds belong to the class of toxic, extremely dangerous substances, the maximum permissible concentration (MPC) in the water of drinking water bodies for chromium (VI) is 0.05 mg/L. A feature of this type of waste is the increased salt background characteristic of electrolytes used in electroplating industries. The article presents experimental data, as well as basic technological solutions for the neutralization of chromium-containing wastewater and waste technological solutions. A technological scheme containing four main stages is proposed: reduction of hexavalent chromium, isolation of trivalent chromium from aqueous solutions, separation of accompanying compounds of heavy and non-ferrous metals, filtration post-treatment of the solution. Experimental studies have shown that, depending on the ionic composition of the medium, the efficiency of isolation of trivalent chromium compounds from aqueous solutions by electroflotation varies from 8 to 95%. The introduction of an anionic flocculant makes it possible to increase the degree of extraction to 99% or more.

Research on neutralization of wastewater from pickling and electropolishing processes

Research on neutralization of wastewater from pickling and electropolishing processes

Industrial Wastewater Indirect Discharges in Integrated Pollution Prevention and Control Perspective: A Case Study of Prague

Wastewater discharge is one of the sources of environmental pollution. Wastewater pollution originates, inter alia, in industrial wastewater. After treatment, industrial wastewater can be discharged directly into the receiving water body or indirectly into a sewerage network terminated by the concluding stage of wastewater treatment. In the Czech Republic, indirect wastewater discharges are obeyed by the contractual relationship between the wastewater producer and the sewerage network operator. General limits for indirectly discharged wastewater are not set by any national legislation. The aim of this paper is a description of industrial wastewater discharged into the municipal sewerage system in Prague and possibilities of setting limits for installations undertaking the industrial activities listed in Annex I of the Integrated Prevention Act. The study showed that 72% of installations discharge industrial wastewater indirectly. The majority are energy plants that produce boiler blowdown wastewater. More than 80% of wastewater from studied installations is treated by one central wastewater treatment plant. The studied installations are equipped with a wastewater neutralization unit. However, despite the existence of the legislative framework to propose limits for studied installations, only two installations covered by BAT conclusions with relevant BAT-AELs for indirect discharges to the receiving water body were determined. Generally, a small percentage of installations can be limited by an integrated permit due to an inconsistent approach to the issue of indirect discharges from installations under the scope of the Integrated Prevention Act.

Raman spectroscopy and XRF identification: First step in industrial wastewater management

Considering the environmental risk, industrial facilities should strive to maximise the effectiveness of on-site treatment processes. It is important to detect the types of pollutants in wastewater and their concentrations, which can be challenging in industrial conditions. In this study, industrial wastewater samples from pickling and electropolishing of stainless steel were analyzed through Raman spectroscopy and XRF techniques using portable instruments. A 3-step procedure for the rapid identification of type of wastewater was proposed. The identification and analysis of peaks present in the Raman spectroscopy at 900, 990, 1050, 1380 cm−1allows for the differentiation of wastewater type and dilution. The final step is to employ XRF measurements to determine the approximate content of the investigated elements. The use of portable analytical instruments for the estimation of contamination levels is essential for the management of the industrial wastewater neutralization process as well as during emergency operations in cases of accidents.

Effectiveness of Ipomoea Aqua Forsk in Phosphate Absorption and pH Neutralization of Detergent Wastewater

&lt;p&gt;&lt;em&gt;One of the causes of environmental pollution is the direct disposal of wastewater into the environment. Disposal of wastewater both originating from domestic (household) and industrial activities into water bodies can cause environmental pollution. As one example, namely laundry waste that is discharged directly into water bodies. The high phosphate content in the laundry waste causing an algae boom and can reduce dissolved oxygen content so that it will result in the death of aquatic biota. The purpose of this study was to find out the optimization Phosphate absorption and pH neutralization of laundry wastewater using Ipomoea sp (Ipomoea Aqua Forsk) in Batam City. This research is an Experimental study with a One Group Pretest-Posttest Design design. Waste samples were taken in one of the laundry businesses located in kel. Sadai, kec. Confused. The subject of this research is the Ipomoea sp., and the object of this research is the level of phosphate and pH contained in laundry wastewater. The results of the treatment that the researchers carried out in treatment I obtained the optimal weight was 500gr of Ipomoea sp growth and could reduce phosphate levels to 0.13 mg/L, and pH to 8.10 pH units, while in treatment II the optimal length of time was 6 days to be able to lowered the phosphate level to 0.09 mg/L, and the pH to 7.60 pH units. The conclusion of this study is that the optimal weight of Ipomoea sp. is 500 grams and the optimal length of time is 6 days. Suggestions from this study are, laundry business owners and the surrounding community are encouraged to Ipomoea sp along the ditches through which laundry waste water passes.&lt;/em&gt;&lt;/p&gt;&lt;p&gt;&lt;em&gt;&lt;strong&gt;Keywords: &lt;strong&gt;&lt;em&gt;&lt;span lang="IN"&gt;Ipomea Sp&lt;/span&gt;&lt;span lang="EN-US"&gt;, Laundry, &lt;/span&gt;&lt;span lang="IN"&gt; Phosphate&lt;/span&gt;&lt;span lang="EN-US"&gt;, &lt;/span&gt;&lt;span lang="IN"&gt; Ph&lt;/span&gt;&lt;span lang="EN-US"&gt;, Wastewater&lt;/span&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/strong&gt;&lt;/em&gt;&lt;/p&gt;

PREPARATION FOR THE DISPOSAL OF SLUDGE FROM THE INDUSTRIAL WASTEWATER TREATMENT PLANTS

Due to the lack of local facilities for recycling, neutralization and treatment of wastewater at many metallurgical enterprises the wastewater is mixed; surface wastewater, blowdown of recycled water supply cycles, chemically polluted wastewater, spent cooling and washing liquids. As a result of the joint processing of the mentioned waste waters in sewage treatment plants, the specific sediments containing compounds of heavy metals and toxic substances are formed. The data on metal content in a solid phase of mixed sediments of different metallurgical enterprises is presented. It is noted that toxicity of sediments can be reduced by excluding the discharge of used concentrated solutions into the sewerage system, by regeneration of used technological and detergent solutions at the place of their formation. The scheme of sludge processing, which provides for their flocculation, gravitational thickening and mechanical dewatering, is proposed. It is shown, that the most efficient flocculant for treatment of sludge of mixed composition is a high-molecular-weight anionic flocculant with the content of ionogenic groups up to 10 %. The effective dosage is 5‒7 kg/t dry solids of sludge. For mechanical dewatering of flocculated sludge, chamber, membrane and belt filter presses as well as screw centrifuges (decanters) can be applied. Depending on the metal content, the dewatered sludge can be used for technical remediation of disturbed areas or for processing in the cement industry. Present study shows a schematic diagram for the preparation of mixed sewage sludge and dry industrial wastes of a metallurgical plant for technical remediation of disturbed lands. For processing sludge with water content between 65‒75 % in cement industry it is recommended to mix the mechanically dewatered sludge with dry wastes, such as abrasive dust and grinding powders, waste core mixtures for casting and other similar wastes.

PH &amp; EC correlation for drainage wastewater neutralization

PH &amp; EC correlation for drainage wastewater neutralization

Data-driven prediction of neutralizer pH and valve position towards precise control of chemical dosage in a wastewater treatment plant

Proper pH control is important to the neutralization of industrial wastewater that will facilitate downstream biological treatment and can strongly affect the utilization of chemical reagent/resource. This study aimed to apply machine learning (ML) models for both pH prediction and lime dosage control towards enhanced automated control of neutralization processes. To achieve this goal, eight ML models were employed and compared in modeling performance, and optimized by using correlation analysis, cross-validation, and grid search techniques. In the neutralizer pH prediction, the highest coefficients of determination (R2) results were obtained at 0.765 (k-nearest neighbors - KNN), 0.918 (eXtreme Gradient Boosting - XGBoost), and 0.900 (random forest - RF) for three neutralizer tanks, accompanied with the lowest root-mean-square error (RMSE) values of 0.289, 0.100, and 0.093, respectively. The impacts of input features were quantified by sensitivity analysis using SHAP values, which demonstrated the importance of temperature, valve position, and upstream pH as high as 0.214, 0.156, and 0.118 (the mean of absolute SHAP value). For lime dosage control, the best model performance came from XGBoost (R2 values of 0.605) for valve 1, RF (0.788) for valve 2, and RF (0.436) for valve 3 with the corresponding RMSE values of 8.056, 6.125, and 4.466, respectively. The recommended valve position was based on the target pH and some examples were illustrated at different upstream pH values. The results of this study has demonstrated that ML approach can be an effective tool to help conserve chemical resources via enhanced chemical dosage control in wastewater treatment.

Statics simulation of the sulphate iron-containing wastewater neutralization process

At the present stage of technical progress, all industries face an extremely complex problem of creating reliable barriers that prevent the penetration of industrial emissions into the environment. Currently, the issues of stabilizing the quality of wastewater treatment have become especially important in connection with the task of developing wastewater-free industrial complexes. Among the complex scientific and technical problems associated with this task, the problem of stable and reliable maintenance of water quality parameters at the outlet of technological systems is crucial, as leakage of pollutants immediately affects the state of basic production, disrupting its technology and infecting ecosystems.&#x0D; The focus of industry on a sharp reduction in emissions and on the creation of industrial cycles with circulating water supply requires intensive efforts to improve the wastewater treatment technology, the introduction of high-performance processes and devices, as well as the synthesis of control systems for typical wastewater treatment processes. &#x0D; For the performance of automated control systems for typical cleaning processes, it is necessary to develop a software package on the basis of appropriate mathematical models of typical processes. To obtain them, methods of mathematical and simulation modeling and variance analysis were used.&#x0D; In order to assess the quality of modeling, the presented mathematical model describing the statics of the neutralization process for ferrous sulfate water was tested for compliance. To do this, two experiments were performed (the first at an initial concentration of sulfuric acid of 800 [mg/l] and ferrous sulfate of 4000 [mg/l] and the second at an initial concentration of sulfuric acid of 800 [mg/l] and ferrous sulfate of 2000 [mg/l]). First of all, a precondition for the reproducibility of experimental results was verified using the Cochrane test. The mathematical model was verified for adequacy on the basis of Fisher's criterion for the significance level q = 0.05 with degrees of freedom j1 = 16 and j2 = 17.&#x0D; For the first experiment, Grozr = 0.50557 and Gmab = 0.73; i.e., Grozr &lt; Gmab and dispersions are homogeneous. Frozr = 1.0225 and Fmab = 2.4 and thus Frozr &lt; Fmab, and there is no reason to say that the model is inadequate.&#x0D; For the second experiment, Grozr = 0.50308 and Gmab = 0.73; i.e., Grozr &lt; Gmab and dispersions are also homogeneous. Frozr = 1.0005 and Fmab = 2.4 and thus Frozr &lt; Fmab, which also indicates that the model is adequate.&#x0D; The issue related to the performance of technological systems for wastewater treatment in non-stationary modes is directly dictated by the specific operating conditions of treatment facilities, which are expressed by the instability of parameters at their inlet. The inability to apply the necessary technological action to the flow in time is a serious obstacle to the implementation of the cleaning depth, which is guaranteed by the physicochemical basis of the methods incorporated in technological systems and requiring cleaning standards. The operator cannot handle this complex task manually. On the basis of the proposed mathematical model, a structural-parametric diagram of the automated process control system has been developed, which makes it possible to proceed to the elaboration of algorithms and software for the control system necessary for automated control of the wastewater treatment process.

Obtaining Nickel Concentrates from Sludge Produced in the Process of Electrochemical Metal Surface Treatment

The article presents the possibility of recovering nickel from waste produced as a result of wastewater neutralization during the electrochemical surface treatment of metals. Leaching the sludge with concentrated hydrochloric acid enabled the metals contained in the sludge from precipitate to the solution with the efficiency of 74.4% (Se) to 100% (Zn). The content of elements was determined using the ICP-OES method. The next step was the precipitation of metals from the obtained solution using various reagents. The precipitating reagents used were 0.5 M sodium hydroxide solution, 0.5 M sodium sulphide solution and 1% dimethylglyoxime solution. Selective precipitation made it possible to obtain nickel concentrates with the content of nickel ranging from 15.3 to 98.2% for the first two methods, whereas in the case of the third method based on a dimethylglyoxime solution, the obtained nickel concentrate purity was 94.3%. The process of leaching nickel-dimethylglyoxime complex (Ni-DMG) with sulphuric acid and crystallization enabled obtaining 99.4% purity nickel sulphate, which can be reused in the nickel plating of selected metals. The research shows that waste generated in the process of neutralization of wastewater from electroplating plants is a potentially important source of recycled nickel concentrates.

Case study of the application of pervious fly ash geopolymer concrete for neutralization of acidic wastewater

Coal-fired power plants generate electricity and produce pollutants, including sulfur dioxide and nitrogen oxides in flue gases, as well as particulates, i.e., fly ash and bottom ash. In addition, the processes for removing toxic gases from flue gas and scale from boilers generate the acid wastewater, which requires treatment before release to the environment. Hence, there are many wastes generated from these power plants, and well managed waste treatment is required. Due to the alkalinity of geopolymer, therefore, this research proposes the use of fly ash for the production of pervious geopolymer concrete to neutralize the acidic wastewater. Its high surface area and porosity makes pervious geopolymer concrete suitable for use in wastewater infiltration and neutralization. Crushed limestone to fly ash mass ratios of 8, 10 and 12 were used in the mix design to produce the pore of pervious geopolymer concretes. Samples of 10-cm cube and 30 × 30 × 5 cm were fabricated, and the physical properties and acid neutralization were tested. A 0.001 M HCl solution was used to represent acidic wastewater, and batch and continuous processes of acid neutralization were compared. Results show that the density of the pervious geopolymer concrete increased with the increasing limestone content from 2.32 to 2.57 g/mL, with the percent voids of 20–30% and water flow rate through the concrete of 3.4–3.9 L/min. The compressive strength of the pervious geopolymer concrete was in the range 5.7–8.3 MPa, conforming to the requirement for pervious concrete as a permeable base and edge drain in pavement applications. With the alkaline properties of the geopolymer, neutralization of acidic wastewater from the operational processes of a power plant could be achieved. For the batch operation, concrete with a crushed limestone to fly ash mass ratio of 8 was most efficient, as it provided the highest volume of acid neutralization of 450 L. Sustainable production of pervious geopolymer concrete is proposed by using waste heat from the combustion process in a power plant.