High-salt preserved szechuan pickle wastewater treatment system

Abstract

The invention provides a high-salt preserved szechuan pickle wastewater treatment system which comprises a high-salt preserved szechuan pickle wastewater pretreatment device, an electrodialyzer and a UASB reactor which are arranged in sequence. Two microorganisms of the complex microbial inoculant growing on the surface of the filler in an attached mode and activated sludge growing in a suspended mode can coexist in the system, most of organic matter and ammonia nitrogen in the preserved szechuan pickle wastewater are removed, suspended matter in the purified wastewater is further removed through a sedimentation tank, the load of an electrodialyzer is relieved, and the utilization rate of the electrodialyzer is increased, the processing efficiency is improved, and the operation cost is reduced. By adopting the method to treat the high-salt preserved szechuan pickle wastewater, the microbial concentration is high, the impact load resistance is high, the organic load treatment capacity is high, the biological nitrogen and phosphorus removal capacity is high, the pretreatment effect is good, and the engineering investment and the operation cost are low.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a high-salt mustard mustard wastewater treatment system. Background technique [0002] Mustard mustard is a kind of semi-dry non-fermented pickle, which is pickled with stem mustard as raw material. It is a very popular side dish in my country and has become an indispensable variety on people's table. Mustard mustard wastewater produced in the production of mustard mustard is a kind of wastewater with high salt content, high organic matter concentration, high nitrogen and phosphorus, and high osmotic pressure. It has problems such as difficult treatment and high treatment cost. Although some areas have launched some special treatment actions to address this problem, the country has no relevant wastewater pollutant discharge control standards, and production and processing enterprises mainly discharge this type of wastewater after dilution. A large amount of mustard ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies corresponding to the prior art, providing a kind of high-salt mustard mustard wastewater treatment system, combining the advantages of biological method and electrodialysis treatment technology two types of technology, in reducing COD concentration (organic matter concentration) and NH 4 + -N concentration (ammonia nitrogen concentration), while reducing the SS concentration (mixed liquid suspended solids concentration) of mustard mustard wastewater, ensuring the normal operation of the electrodialyzer, reducing the salinity of high-salt mustard mustard wastewater, combined with aerobic and anaerobic microorganisms The complex bacteria system solves the problem of removing organic matter and nitrogen and phosphorus under high-salt conditions. It can efficiently treat high-salt mustard mustard wastewater with short process, low operating cost, stable and efficient operation, and removes high-salt mustard mustard wastewater through grilles. After adjusting the water quality, use the high-salt mustard mustard wastewater pretreatment device to remove the organic matter and SS concentration in the high-salt mustard mustard wastewater, and then use the electrodialyzer to remove the salt in the high-salt mustard mustard wastewater, and finally use the UASB reactor to remove Residual organic matter in high-salt mustard mustard wastewater, and finally achieve the various indicators of the treated high-salt mustard mustard wastewater to meet the discharge standards, which perfectly solves the serious blockage and pollution of high-concentration organic and suspended particles in mustard pickling wastewater. Ion in the electrodialyzer The exchange membrane causes the problem that the electrodialyzer cannot work normally, so that the salinity of the wastewater treatment biological unit is fully diluted, the growth of microorganisms is no longer inhibited or even killed, and the treatment efficiency of the entire wastewater treatment system is greatly improved

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