Ecological Circulation Process for Treatment of Metronidazole Production Wastewater with Biogas Heat Source

Abstract

The invention relates to an ecological cycle process for treating wastewater produced by metronidazole with a biogas heat source, which solves the problems in the prior art that the biogas cannot be fully utilized and the wastewater produced by chemical enterprises directly discharges metronidazole to cause serious pollution to the environment. The reason is: the waste water treatment plant is arranged in the area where the odor emitted during the treatment of the metronidazole production waste water has no effect on the quality of the poultry and livestock meat of the farm, and the biogas digester is built between the farm and the waste water treatment plant, and the biogas produced by the biogas digester is used As the heat source fuel for the evaporator and distillation plant boiler in the wastewater treatment site, the discharged wastewater is controlled within the national waste discharge standard through evaporation and distillation. If the method of biogas heat source treatment of metronidazole production wastewater is applied to all chemical production wastewater, the pollution degree of wastewater transported to the sewage treatment plant can be reduced by one order, and the difficulty of biochemical treatment in the sewage treatment plant will be reduced. The environmental protection standards of the entire chemical industry park have been upgraded to a higher level to achieve ecological cycle and green development.

Description

1. Technical field [0001] The invention belongs to a chemical enterprise production wastewater treatment method, in particular to an ecological cycle process for treating metronidazole production wastewater with a methane heat source. 2. Background technology [0002] In recent years, my country's aquaculture industry has rapidly developed from courtyard breeding to intensification, scale, and commercialization. Especially around large and medium-sized cities, animal husbandry farms are getting bigger and bigger, and the scale is getting bigger and bigger. The problem of livestock and poultry manure brought about has also become more prominent. [0003] Traditional manure treatment methods include stacking fermentation, composting, direct drying and granulation of manure, etc. The above method brings many problems: (1) large-scale storage yard is required; (2) long-term natural aerobic fermentation is required; (3) the smell is soaring, mosquitoes and flies breed, pollute th...

AI Technical Summary

Problems solved by technology

The above method brings many problems: (1) large-scale storage yard is required; (2) long-term natural aerobic fermentation is required; (3) the smell is soaring, mosquitoes and flies breed, pollute the air, and seriously affect the epidemic prevention of farms; (4) ) The manure drench brushes and flows, seriously polluting the surrounding environment; (5) Increasing the round-trip transportation of manure, which affects economic benefits; (6) Manure compost is a high-quality organic fertilizer for farmland, but traditional treatment methods make it difficult Promotion, not suitable for the needs of agricultural modernization

The composition of high-concentration sewage changes instantaneously, and direct biochemical treatment is almost impossible. Only after diluting with a large amount of water can biochemical treatment be possible, resulting in high treatment costs and the failure of the sewage station to operate normally

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