Blog
Blog
Industry News
Company News
Industrial wastewater treatment: Different industries produce different wastewater substances
Release time:
2022-12-12 13:38
In recent years, due to China's active adoption of comprehensive measures, the elimination of backward industrial production capacity, the promotion of industrial restructuring, and the strengthening of energy conservation and emission reduction, the efficiency of enterprise production has continuously improved, and more and more attention has been paid to industrial wastewater. This will be further amplified. Industrial wastewater is characterized by significant variations in water quality and quantity depending on the production process and methods. Let's take a look at Industrial Wastewater Treatment and some related knowledge!
Electroplating industry wastewater:
Electroplating industrial wastewater contains a large number of toxic and harmful pollutants and is a key monitoring target for national environmental protection. Discharge standards are strict.
Food industry wastewater:
The food industry uses a wide range of raw materials and produces various products. The quantity and quality of wastewater discharged vary greatly. The main pollutants in industrial wastewater are: (1) Floating solid substances in wastewater, such as vegetable leaves, fruit peels, minced meat, poultry feathers, etc.; (2) Suspended solids in wastewater, including oils, proteins, starch, colloids, etc. (3) Acids, alkalis, salts, and sugars soluble in wastewater; (4) Mud and other organic matter carried in raw materials; (5) Pathogenic bacteria and their toxins. Food industry wastewater is characterized by high organic matter and suspended solids content, is easily decomposable, and is usually not very toxic.
Papermaking industry wastewater:
The papermaking industry uses wood, straw, reeds, rags, etc., as raw materials. After high-temperature and high-pressure cooking, cellulose is separated to produce pulp. Wastewater discharged from the pulp production process is called black liquor, which contains lignin, cellulose, volatile organic acids, etc. It has a foul odor and causes serious pollution. In addition, a large amount of washing wastewater will be produced during papermaking, which contains a certain amount of acids and alkalis, organic matter, additives, etc. Papermaking wastewater is difficult-to-treat industrial wastewater.
Printing and dyeing industry wastewater:
Printing and dyeing wastewater refers to wastewater discharged from printing and dyeing plants, mainly processing cotton, linen, chemical fiber, and their blended products. Textile printing and dyeing wastewater is characterized by large water volume, high organic pollutant content, high alkalinity, and large water quality changes. It is one of the high-concentration and difficult-to-treat industrial wastewaters. The wastewater contains dyes, sizing materials, additives, oils, acids and alkalis, fiber impurities, sand, inorganic salts, etc. Another characteristic of the wastewater is its high chroma, so one of the important tasks in treating printing and dyeing wastewater is decolorization.
Industrial wastewater treatment, papermaking wastewater, chemical fiber wastewater
Practical application of IC tower in food processing wastewater treatment
Wastewater from the food processing industry contains a large amount of organic matter, suspended solids, and oils. Traditional treatment methods often face problems such as high energy consumption and long processing cycles. The IC tower (internal circulation anaerobic reactor), with its unique internal circulation structure and three-phase separation system, demonstrates technical adaptability in treating high-concentration organic wastewater. The core advantage of the IC tower lies in its internal circulation mechanism. Through the fluid movement of the internal rising and falling pipes, it achieves thorough mixing of sludge and wastewater, improving biodegradation efficiency. In food wastewater treatment, the IC tower can adapt to influent conditions with a wide range of COD concentrations, especially suitable for the dairy, meat processing, and brewing industries. Practice has shown that when treating oily wastewater, the IC tower can stably achieve a COD removal rate that meets emission standards by reasonably controlling the hydraulic retention time and organic load. In an actual engineering case, a large seasoning production enterprise used the IC tower as a pretreatment unit. The influent COD concentration ranged from 8000-12000mg/L, and after treatment by the IC tower, it was reduced to below 1500mg/L, significantly reducing the burden on the subsequent aerobic treatment unit. The operating data shows that the biogas yield of the IC tower is stable and can be used for energy recovery, further reducing treatment costs.
The effectiveness of IC tower in treating high-concentration organic wastewater
The IC tower (internal circulation anaerobic reactor) is an important piece of equipment in modern wastewater treatment, demonstrating significant technical characteristics in treating high-concentration organic wastewater. Its unique internal circulation system enhances the contact efficiency between sludge and wastewater, making the organic matter degradation process more thorough and showing clear adaptability in treating industrial wastewater with a COD concentration exceeding 3000 mg/L. The treatment effect of this technology is mainly reflected in two dimensions: organic matter removal rate and biogas production. Actual operating data shows that in wastewater treatment for industries such as brewing and food processing, the IC tower usually maintains a high COD removal rate. The granular sludge formed inside the reactor has good settling performance, ensuring the stability of system operation. When the temperature is controlled around 35℃, the microbial activity reaches an optimal state, and the treatment effect is relatively ideal. In the process of treating high-concentration organic wastewater, the volumetric loading capacity of the IC tower is a key indicator that distinguishes it from traditional anaerobic processes. Due to its multi-stage reaction zone design and internal circulation flow pattern, the equipment can withstand high organic load shocks. Pharmaceutical wastewater treatment cases show that the system can still maintain stable operation when the influent COD fluctuates between 5000-8000 mg/L.
In the back-end process of semiconductor manufacturing, the IC handler (integrated circuit testing and sorting equipment) plays a core role in verifying chip functions and screening for quality. Its working principle is to use a precision robotic arm to send wafers or packaged chips to the testing station, and use the probe card and tester to complete the electrical parameter measurement. Then, according to the test results, it automatically sorts out qualified products and defective products. This integrated "test-judgment-sorting" process makes it a decisive link in the quality control before the chip leaves the factory. From a technical perspective, the gatekeeping role of the IC handler is reflected in three dimensions: First, the contact testing scheme can simulate the actual working state of the chip and detect physical defects such as open circuits, short circuits, and leakage; second, the multi-station parallel testing architecture achieves the screening capacity of thousands of chips per unit time, matching the production capacity needs of the packaging and testing factory; more importantly, its test data is directly related to the yield statistics of the chip, providing key evidence for process improvement. Current mainstream equipment supports environmental temperature testing from -40℃ to 150℃, covering the reliability verification needs of different application scenarios such as consumer electronics and automotive electronics. In industrial practice, the testing standards of IC handlers are often more stringent than the terminal application conditions. Taking the case of a major packaging and testing factory as an example
Contact Information
Address: No. 104, Unit 1, Building 2, Far East Ocean Tide Xuan Center, Tangye Street, Licheng District, Jinan City, Shandong Province
Mobile Website
WeChat Customer Service
Shandong Zhiyuan Environmental Engineering Co., Ltd. Copyright reserved This website supports IPV4&IPV6 dual-way access