Changsha mobile phone screen wastewater treatment equipment mainly treats wastewater generated during the production of mobile phone screens to ensure that the wastewater meets environmental protection standards before discharge and reduces pollution to the environment. The following is a detailed introduction to Changsha mobile phone screen wastewater treatment equipment and related treatment processes:

1. Wastewater characteristics

The wastewater generated during the production of mobile phone screens mainly includes grinding wastewater and cleaning wastewater. Grinding wastewater is a high-concentration inorganic wastewater, mainly composed of suspended matter, and the wastewater is alkaline; the concentration of pollutants in cleaning wastewater is relatively low, but the water volume is large, it is weakly alkaline and has poor biodegradability.

2. Treatment process

In view of the characteristics of mobile phone screen wastewater, a treatment process combining physical and chemical precipitation and filtration is usually adopted. The specific process flow may include steps such as regulating tank, high-efficiency sedimentation tank, D-type filter tank, etc., and supplemented by a fully automatic dosing system to ensure the treatment effect.

1. Regulating tank: used to adjust the water quality and water volume of wastewater, and provide stable water inlet conditions for subsequent treatment processes.

2. High-efficiency sedimentation tank: through mechanical stirring mixing zone, flocculation reaction zone, plug flow reaction zone, sedimentation concentration zone and post-mixing zone, etc., suspended solids, hardness and other pollutants in wastewater are effectively removed. The high-efficiency sedimentation tank adopts multiple theories such as sludge coagulation, circulation, inclined tube separation and concentration, and realizes mud-water separation and sludge concentration through reasonable hydraulic and structural design.

3. D-type filter tank: a new gravity filter tank with the advantages of large specific surface area and small filtration resistance. It can further remove SS (suspended solids) and organic matter in wastewater and improve the effluent water quality.

4. Fully automatic dosing system: According to the requirements of effluent water quality, it automatically adds polyaluminium chloride (PAC), high molecular polymer (PAM), sulfuric acid and chlorine dioxide and other agents. Among them, PAC and PAM are used as coagulants and flocculants, sulfuric acid is used to adjust the pH value of effluent, and chlorine dioxide is used to kill viruses, bacteria and other microorganisms in wastewater.

III. Equipment features

1. High efficiency: The use of advanced equipment such as high-efficiency sedimentation tanks and D-type filters can effectively remove pollutants such as suspended solids, hardness, and organic matter in wastewater to ensure that the effluent water quality meets the standards.

2. High degree of automation: The fully automatic dosing system can automatically adjust the dosage of agents according to the effluent water quality, reduce manual operations, and improve treatment efficiency.

3. Small footprint: Compared with traditional treatment processes, this process occupies a smaller area, which is conducive to saving land resources.

4. Low operating cost: By optimizing process design and equipment selection, the operating energy consumption and agent consumption are reduced, thereby reducing the operating cost.

Changsha mobile phone screen wastewater treatment equipment adopts advanced treatment technology and equipment, which can efficiently and stably treat the wastewater generated in the production process of mobile phone screens, ensure that the effluent water quality meets the standards and is reused in the production process to achieve the recycling of water resources.