Composite carbon source production process including nitrogen and phosphorus removing

Abstract

A composite carbon source production process including nitrogen and phosphorus removing is disclosed and includes phosphorus removing or nitrogen removing. The process includes main steps of a) determining preconditions; b) adding a carbon source; c) determining an addition position; d) determining an addition method; e) determining dosage; f) determining a suitable object, g) determining a concentration judgment standard and h) determining a nitrogen removing manner. The composite carbon source is a composite high-efficiency carbon source which contains nutrients suitable for growth in sewage, and which is developed for industrial or municipal wastewater with high ammonia nitrogen contents. The composite carbon source is rich in nutrition, enables high metabolism vitality of bacterial, ahigh synthesis speed of new cell substances, improved growth rates of denitrifying bacteria, a shortened stagnation period of bacteria and rapid adaption to the environment, and has high tolerance toimpact of outer bad conditions such as salt, temperature and pH values. Through addition of the composite carbon source, competition for carbon sources by denitrifying bacteria and phosphorus accumulating bacteria can be improved, the nitrogen and phosphorus removal efficiency of a low-carbon source sewage treatment biochemical system can be effectively improved, and in particular, the total nitrogen removal effect of sewage can be improved.

Description

technical field [0001] The invention relates to the technical field of nitrogen and dephosphorization, in particular to a production process of a composite carbon source with nitrogen and dephosphorization. Background technique [0002] As we all know, the content of organic matter in sewage in southern cities in my country is very low, and the nutrient ratio of sewage influent is out of balance. It is difficult to achieve the expected nitrogen and phosphorus removal effect during operation. The influent COD of the effluent of the typical southern sewage biological treatment system is mostly around 100mg / L, which may be lower in the rainy season, and the total nitrogen value is mostly around 30mg / L or even higher. Due to the lack of carbon sources, biological denitrification alone can easily meet the requirement of total nitrogen lower than 15mg / L in the first-level A emission standard (some areas require the total nitrogen emission concentration to be lower than 10mg / L). T...

AI Technical Summary

Problems solved by technology

[0003] Under such influent conditions, in order to achieve the standard discharge of nitrogen and phosphorus, it is necessary to maintain a certain number of microorganisms in the activated sludge in the biological pool to degrade nitrogen and phosphorus, which results in a lower organic load-to-microbial ratio F / M is very low, and the extremely low food-to-micro ratio F / M will cause the aging and disintegration of activated sludge, such as attached figure 1 As shown, the effluent water quality exceeds the standard

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