Composite carbon source production process including nitrogen and phosphorus removing

A composite carbon source and production process technology, applied in special compound water treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of activated sludge aging and disintegration, effluent water quality exceeding the standard High acceptance, shorten stagnation period, and improve nitrogen and phosphorus removal efficiency

Inactive Publication Date: 2020-04-10
广州博涛生物技术有限公司
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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

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  • Composite carbon source production process including nitrogen and phosphorus removing

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Embodiment 1

[0027] Such as figure 1 As shown, the present invention provides a kind of production technology that has the compound carbon source of denitrification and dephosphorization, comprises dephosphorization or denitrification, and its main technological link is as follows:

[0028] a Precondition: Under the condition that the influent COD is lower than 100mg / L, TN is 25mg / L, and TP is 2.5mg / L;

[0029] b Dosing carbon source: increase COD of influent water by 40-50mg / L, can reduce the average value of total phosphorus in the effluent of the test group by about 0.3-0.4mg / L compared with the control group without adding carbon source, and reduce the average value of total nitrogen by 3 -6mg / L phosphorus and nitrogen removal;

[0030] c Dosing position: at the water inlet of anaerobic pool or anoxic pool;

[0031] d Dosing method: through the metering pump or comprehensively depending on the site conditions;

[0032] e Dosing amount: The specific usage amount depends on the on-sit...

Embodiment 2

[0044] Please refer to the attached figure 1As shown, for the situation where the concentration of organic pollutants in the water is not high due to the imperfect construction of the sewage pipe network, fewer separate sewage pipe networks, industrial wastewater entering the plant, and groundwater infiltration, etc., the available carbon source is lower, nitrogen and The content of phosphorus is high, including BOD5 / TN<3 or BOD5 / TP<20 (possibly existing at the same time), which makes the effect of biological nitrogen and phosphorus removal unsatisfactory. For this case, adding a carbon source is the simplest and most effective method.

[0045] 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 ratio F / M Very low, very low food micro ratio F / M ...

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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...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/28C02F101/16
CPCC02F3/28C02F3/34C02F2101/105C02F2101/16C02F2305/06
Inventor 曾洲华曾洲颂
Owner 广州博涛生物技术有限公司
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