Silicon Carbide Ceramic Membrane Separation Technology

A Case Study of Mine Water

01 Introduction

Mine water, a typical and challenging wastewater from the coal chemical industry, often faces problems such as difficult filtration, high risk of scaling, and excessive pollutants due to its fluctuating quality and complex composition. This has become a key bottleneck restricting enterprises' environmental compliance and resource recycling. Especially for mine water with high fluoride and high alkalinity, not only are fluoride emissions difficult to meet standards, but calcium ions in the water also easily form scale in a highly alkaline environment, clogging dust suppression equipment and pipelines. Furthermore, the increasing mineralization trend year by year further increases the pressure on subsequent treatment. Jianmo Technology, relying on its independently developed silicon carbide ceramic membrane separation technology, provides an efficient solution to this industry pain point.

This article takes a 2×20m³/h mine water treatment project as an example to break down the practical application and core advantages of this technology in detail.

02 Project Basic Information

△Treatment Object: Coal mining water stored in underground water tanks;

△Treatment Requirements: Reduce suspended solids content in mine water, ensure turbidity and SDI meet standards, and guarantee the quality of reused mine water;

△Applied Product: Jianmo Technology silicon carbide ceramic membrane.

03 Process Flow Description

This project has a designed treatment capacity of 2×20 m³/h, employing a "silicon carbide ceramic membrane system direct filtration → reverse osmosis membrane system" process. The treated water will be used for underground water supply.

In the entire process, the Jianmo Technology silicon carbide ceramic membrane system serves as the core treatment unit, undertaking multiple functions including "pretreatment + direct filtration + hard scale removal and prevention." It achieves multi-objective treatment through physical separation, providing crucial support for the stable operation of the project.

04 Process Advantages Analysis

1.High Separation Accuracy and Strong Adaptability: The nanoscale pore size of the silicon carbide ceramic membrane results in a high retention rate of suspended solids in the mine water, ensuring stable turbidity of the produced water and meeting the requirements for reverse osmosis feed water.

2.Stable Operation, Unaffected by Fluctuations in Influent Water Quality: Mine water quality is easily affected by mining conditions, resulting in significant fluctuations. Silicon carbide ceramic membranes are unaffected by these fluctuations, maintaining stable separation efficiency and product water quality without the need for frequent adjustments to process parameters.

3.Corrosion and Scaling Resistance, Adaptable to Complex Operating Conditions: Utilizing high-temperature recrystallized and sintered silicon carbide material, it possesses strong corrosion and acid/alkali resistance, tolerating the corrosive environment of high-alkalinity and high-fluoride mine water. The wide flow channel design combined with cross-flow filtration effectively prevents suspended solids accumulation and calcium ion scaling, solving the problems of traditional membranes being prone to clogging and requiring frequent cleaning.

4.Shortened Process Flow, Integrated Design Saves Footprint: Adopting an integrated, one-piece equipment design, raw water can directly enter the membrane for filtration, eliminating the need for multi-stage pretreatment steps such as sedimentation tanks and sand filters in traditional processes. This significantly shortens the process flow while reducing the equipment's footprint, making it particularly suitable for installation scenarios with limited space in mines.

5.Long lifespan and high cost-effectiveness throughout the entire life cycle: The membrane modules are designed for a lifespan of up to 20 years, reducing equipment replacement frequency and initial investment; strong anti-fouling performance and long cleaning cycles reduce maintenance material consumption, resulting in significant long-term operating cost advantages.

6.Fully automated operation, suitable for underground mining environments: Equipped with a PLC intelligent control system, it can achieve fully automated operation without manual on-site intervention, making it suitable for complex underground working environments where manual supervision is inconvenient, reducing labor costs and safety risks.

05 On-site photos