Campus laboratory environmental protection construction is an important part of green campus creation and campus safety management. Standardized experimental wastewater treatment is a key measure to ensure the safety of teachers and students' experiments and protect the regional ecological environment. As a local key experimental teaching demonstration school, Zhejiang Xinhua Middle School has heavy physics-chemistry-biology laboratory teaching tasks, routinely conducts group experiments, science and technology innovation experiments and exploratory research projects, and generates 1000 L of laboratory wastewater per day.

Different from professional research institutions, middle school laboratory wastewater has the obvious characteristics of mixed water quality, concentrated discharge and large working-condition fluctuations. Acid-base reagents, organic solvents, heavy-metal waste liquid and biological dyeing waste liquid are produced alternately, and concentrated drainage after class easily causes instantaneous load surges of equipment. At the same time, the school has no dedicated environmental protection operation and maintenance personnel. Long-term shutdown during winter and summer vacations and lack of daily professional care easily lead to pipeline scaling, parameter deviation and unstable operation, with hidden dangers of non-compliant wastewater treatment. To thoroughly solve the campus laboratory operation and maintenance pain points and ensure the stable and compliant operation of the experimental wastewater treatment system, AiKe engineers made a special trip to provide a full-range free special maintenance service for the school's AK-SYFS-BZ-1000 laboratory wastewater treatment equipment.

🏢User unit:Zhejiang Xinhua Middle School

🗺️Province/City:Zhejiang Province

⚖️Daily treatment volume:1000L

⚙️Equipment model:AK-SYFS-BZ-1000

I. Zhejiang Xinhua Middle School: Difficulties in Physics-Chemistry Laboratory Wastewater Disposal under 1000 L/day Treatment Volume

As a local experimental teaching demonstration school, Xinhua Middle School in Zhejiang Province routinely undertakes a large number of teaching tasks such as conventional group experiments for the whole grade, subject competition expansion experiments, and student exploratory project tests. The 1000 L/day laboratory wastewater disposal faces multiple realistic difficulties unique to the basic education scenario.

The composition of wastewater changes dynamically with the teaching progress. Acid-base reagents, heavy-metal salt residues, organic experimental organic solvents and biological experimental microbial samples appear alternately. The drainage period is concentrated in the 1-2 hours after class, and the instantaneous drainage shock load is much higher than that of ordinary laboratories. At the same time, middle schools generally have no dedicated environmental protection operation and maintenance personnel. Physics and chemistry teachers without professional background can hardly complete the daily operation and maintenance of complex wastewater equipment, and the campus is densely populated, with extremely high requirements for equipment operation safety and no secondary leakage risk. How to achieve long-term stable compliance within a limited budget has become the core challenge of laboratory wastewater governance in such middle schools.

II. AiKe Engineers Walk into Zhejiang Xinhua Middle School for Free On-Site Maintenance of Laboratory Wastewater Treatment Equipment

AiKe's technical engineering team arrived at a Xinhua Middle School in Zhejiang Province and completed a full-process free on-site special maintenance for the AK-SYFS-BZ-1000 laboratory wastewater treatment equipment in use on campus, providing professional services to ensure the safe and compliant discharge of campus laboratory wastewater and building a green and environmentally friendly experimental teaching environment for teachers and students.

As a provincial key middle school, Zhejiang Xinhua Middle School has multiple high-standard physics-chemistry-biology laboratories and an innovation experiment center. Daily teaching and research experiments involve acid-base neutralization, organic synthesis, biological micro-staining, heavy-metal detection and other diversified experimental contents. The 1000 L/day wastewater mixes complex pollutants such as acid-base reagents, organic solvents, heavy-metal ions and microbial staining liquid. Campus laboratory wastewater discharge has a distinct 'intermittent pulse' characteristic-concentrated drainage during class breaks and after school, with drastic instantaneous flow fluctuations. Coupled with the seasonal operation and maintenance problems such as lagging biological system activity recovery and dry pipe deposits after long-term shutdown during winter and summer vacations, and the lack of dedicated environmental protection operation and maintenance personnel, the equipment relies on automatic operation for a long time, and system maintenance is easily ignored.

In this maintenance, AiKe engineers conducted a systematic deep investigation of the equipment: completed thorough cleaning of pretreatment unit deposits, precise adjustment of aeration system air volume, calibration of dosing metering pump stroke and pipeline dredging, precise calibration of pH/ORP online sensor instruments, and verification and optimization of PLC electric control cabinet program operating parameters, and tested the automatic safety functions such as timed switch, liquid level automatic control, and leakage and electric leakage protection one by one, ensuring the equipment continuously and stably outputs compliant water quality under the high-frequency use conditions of the new semester. The engineers simultaneously conducted special training for the school's laboratory management personnel on daily inspection points and the restart operation specification after winter and summer vacation shutdown.

At present, the equipment has resumed normal operation, and all effluent indicators meet the municipal pipe network discharge standard. This on-site free maintenance not only effectively eliminated the subtle hidden dangers accumulated during long-term equipment operation, but also provided timely and strong professional support for the campus laboratory environmental protection and safety management, reflecting AiKe's full-cycle service commitment to education industry users.

III. AiKe AK-SYFS-BZ-1000 Laboratory Wastewater Treatment Equipment Parameters

IV. AiKe AK-SYFS-BZ-1000 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.