The auxiliaries of Shaanxi Printing and Dyeing Factory should pay attention to the treatment process and equipment used in the implementation of wastewater treatment, and carry out appropriate control to ensure that the water quality after treatment meets the relevant requirements without any impact. After pre-treatment, a large amount of suspended wastewater is removed. The subsequent treatment process load can be combined with anaerobic+aerobic process for wastewater treatment. The medium A/O biological treatment process is mature, which is composed of anoxic treatment unit and aerobic treatment unit.
Shaanxi is a salt composed of acetic acid and sodium ion, 10% - 25% solution, which is widely used to supplement carbon source for denitrification and denitrification in sewage treatment, and has domestication effect on denitrification. It is an excellent sewage carbon source agent.
It also includes control, which is connected with the inlet water quality and quantity monitoring instrument, water quality monitoring instrument and post-treatment water quality monitoring instrument respectively, and can read the data of each monitoring instrument; Control the connection with the diaphragm pump to read its flow data, which can control the start, stop and flow of the diaphragm pump; The size control of the through wall pump is connected with the through wall pump, which can control the start and stop of the through wall pump and the flow.
Appearance of auxiliaries of Shaanxi Printing and Dyeing Factory: or yellowish, no suspended solids.
Density: 1.15
20%, COD 160000 mg/L;
Content 25%, COD 200000 mg/L;
Advantages for sewage treatment:
1. Shortening the acclimatization time can shorten the stagnation period and quickly adapt to new strains.
2. Tolerance to external adverse conditions such as salinity and temperature Resistance to impact such as PH value.
3. Load, rich nutrition, strong metabolic activity, fast synthesis of new cells, and growth rate of denitrifying bacteria can withstand high load
4. In the current sewage treatment, the denitrification process with external carbon source is under construction or operation in many sewage plants in China. Although it is recognized as an external carbon source with low price, it is used because of its toxicity. Sodium acetate is becoming a substitute carbon source that is widely used. Sodium acetate is nonflammable and explosive.
The content of sodium acetate is flexible, and different contents can be provided according to the process of the user.
At present, there is no such definition for the COD equivalent of carbon source, so according to the actual usage habits, the author makes a summary definition: the COD equivalent of carbon source can be understood as the milligram of oxygen required per unit volume or per unit of carbon source after oxidation, in mg/L, mg/g or mg/kg. Transportation: tank car, ton barrel, 25kg/small barrel.
