Mineral resource development has always been accompanied by rigid constraints on environmental governance, and the wastewater disposal of mining detection laboratories is a hidden corner that receives little attention. A mining company in Luliang City, Shanxi Province, rooted in the coal and mineral resource-rich area of the Loess Plateau hinterland, has its laboratory undertaking key tasks such as ore grade identification, beneficiation process optimization tests and precise heavy-metal element detection. The 300 L/day wastewater concentrates the environmental risks unique to the mining industry-lead, mercury, arsenic, cadmium and other highly toxic heavy-metal ions enter the water body after strong-acid digestion, intertwined with flotation organic reagent residues, forming a special pollution system with strong toxicity, high corrosiveness and extremely poor biodegradability, against which conventional water-treatment processes are often powerless.

What is more difficult is that the wastewater discharge of mining laboratories shows a typical 'intermittent shock' characteristic. The water-quality concentration between testing batches can fluctuate violently by several to dozens of times. The 300 L small-water-volume condition makes the precise control of dosing extremely difficult-excess dosing increases cost, while insufficient dosing directly leads to the risk of exceeding standards. Coupled with the geographical and climatic constraints of Luliang's long cold winters and large day-night temperature differences, pipeline freezing and equipment operation stability problems always loom. Driven by both increasingly strict environmental standards and the green transformation of the mining industry, how to make this small-volume wastewater treatment system operate continuously and reliably unattended has become an unavoidable practical proposition for the enterprise.

🏢User unit:A Mining Company in Shanxi

🗺️Province/City:Luliang City, Shanxi Province

⚖️Daily treatment volume:300L

⚙️Equipment model:AK-SYFS-BZ-300

I. Analysis of the Exclusive Difficulties in Luliang Mining Laboratory Wastewater Treatment

A mining company in Luliang City, Shanxi Province has a laboratory treating 300 L of wastewater per day, mainly from ore component testing, heavy-metal digestion, and mineral sample physical and chemical analysis. Relying on the special testing scenarios of the mining industry, the wastewater treatment has many exclusive difficulties.

First, the wastewater pollution characteristics are prominent, rich in various heavy-metal ions such as lead, mercury, arsenic and cadmium, while containing strong acid and alkali reagents and organic extraction solvents left over from digestion experiments. The pollutants are highly toxic and corrosive, and conventional treatment processes can hardly completely purify them, easily causing excessive discharge.

Second, the wastewater discharge is intermittent and fragmented. Under the 300 L/day small-water-volume condition, the water-quality concentration fluctuates greatly, making it difficult to control the dosing accuracy, and prone to unstable treatment effects.

In addition, Luliang is located on the Loess Plateau, with large day-night temperature differences and long low-temperature winters. Equipment pipelines are prone to scaling and freezing, affecting operation stability. At the same time, the pollutant components of mining testing wastewater are complex, and secondary precipitation easily blocks equipment filter elements and pipelines. The equipment requires frequent maintenance. Balancing compliance, long-term stable operation and low-cost maintenance has become the core problem of the enterprise's laboratory wastewater disposal.

II. AiKe AK-SYFS-BZ-300 Completes Free On-Site Maintenance for a Shanxi Mining Laboratory

AiKe's operation and maintenance engineering team rushed to a mining company near Xiaoyi City, Luliang City, Shanxi Province, and completed a full-process on-site free special maintenance for the AK-SYFS-BZ-300 laboratory wastewater treatment equipment in operation on site, thoroughly eliminating the equipment wear hidden dangers generated by long-term operation in the mining scenario, and building a compliance defense line for the mine detection laboratory's wastewater disposal.

The mining company's laboratory routinely undertakes core work such as ore component analysis, beneficiation reagent screening, and heavy-metal element digestion testing. The 300 L/day wastewater mixes heavy-metal residues such as lead and arsenic, flotation organic reagents and high-concentration ore-slurry suspended solids. The water is highly corrosive and prone to pipeline crystallization and siltation. After long-term operation, problems such as metering pump dosing deviation and monitoring instrument value drift easily occur. This maintenance targeted the thorough cleaning of pipeline mineral sludge and crystallization, precise calibration of the heavy-metal capture agent dosing system, calibration of online monitoring instruments, and whole-machine anti-corrosion safety inspection, etc. All operating parameters have been fully restored to factory standards.

At present, the equipment effluent stably meets the relevant requirements of the 'Integrated Wastewater Discharge Standard'. The original-factory on-site maintenance greatly reduces the operation and maintenance pressure of mining enterprises, and builds a long-term reliable closed-loop governance system for laboratory wastewater in the Luliang mining scenario.

III. AiKe AK-SYFS-BZ-300 Laboratory Wastewater Treatment Equipment Features

▶▷ Wide applicability, adaptable to comprehensive wastewater treatment in various laboratories;

▶▷ Multiple advanced patented technologies are adopted for multi-stage treatment and purification of wastewater to meet discharge standards;

▶▷ Centralized control with high automation, simple operation, fully automatic operation, no need for dedicated personnel;

▶▷ Automatic water-leakage and electric-leakage protection, high/low voltage automatic protection, no-wastewater protection, and liquid tank level protection functions;

▶▷ Dynamic operation with digital LCD display of water quality indicators;

▶▷ Modular integration technology with good treatment effect, no secondary pollution, and low operating cost;

▶▷ Acid and alkali corrosion resistance, low noise, low power consumption, multiple safety protection and other features;

▶▷ Precise liquid level automatic control: runs with water, stands by without water;

▶▷ Through"one-stop" integrated design: beautiful appearance, small footprint, fast processing speed, low investment, easy installation and movement, large processing capacity, good treatment effect, low energy consumption, no noise, no leakage, truly realizing engineering equipmentization;

▶▷ No civil construction treatment tank needed; no secondary pollution such as waste residue, waste gas, or wastewater;

▶▷ Timed on/off function: the equipment can set automatic morning power-on and evening power-off times according to the customer's situation; after the time is set, the equipment automatically powers on every morning and off every evening, freeing operators from going to the equipment room every morning and evening to turn it on and off;

▶▷ Remote monitoring and PLC function (optional): the customer only needs to use the remote control software installed in the IoT from the office or central control room to remotely monitor, operate, and manage the wastewater treatment equipment in the wastewater treatment room, and understand the equipment's operating status and conditions in real time.

IV. AiKe AK-SYFS-BZ-300 Laboratory Wastewater Treatment Equipment Introduction

The laboratory standard-type wastewater (sewage) comprehensive treatment system adopts the AK dedicated PLC fully automatic intelligent centralized control system. The equipment is designed according to the complexity of laboratory wastewater, and customized processes are provided for different laboratories.

The treatment process is mature, producing no secondary pollution such as waste residue, waste gas, or wastewater, effectively protecting the environment. The equipment is made of corrosion-resistant materials, with low noise, low power consumption, and multiple protections. With treatment capacity of 0.3T/D-3T/D (ton/day), it meets the relevant requirements of the national Integrated Wastewater Discharge Standard (GB8978-1996), Discharge Standard of Water Pollutants for Medical Organizations (GB18466-2016), and Water Quality Standard for Wastewater Discharged into Urban Sewers (GB/T 31962-2015).