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Knowledge of regulating ponds for sewage treatment

来源:Shenlong Environmental Protection      Release time:2023-07-05       Number of readings:

Knowledge of regulating ponds for sewage treatment

一.What is a sewage tank?

Sewage regulating tank refers to: in sewage treatment, used to regulate the inflow and outflow of water flow structure。

It is mainly used in factory sewage station and industrial park sewage plant。

二.Sewage conditioning tank, is it important?

It's important!Especially industrial sewage, the situation is changeable, the water quality is uneven and the water quantity is unstable, which is easy to reduce the overall sewage treatment effect, and can not give full play to the design load of the treatment equipment。

The regulation tank is set up so that the sewage is not affected by the change of the peak flow or peak concentration of the wastewater。

三.What are the specific functions of the sewage regulation tank?

The regulating pool can be summarized into three functions, which are: regulating water quantity + balanced water quality + pretreatment。 

Specifically, the role of regulation is mainly reflected in the following aspects:  

1.To provide buffer capacity for sewage treatment load, to prevent the treatment system load drastic changes;  

2. Reduce the fluctuation of sewage flow into the treatment system, so that the rate of chemical feeding used in sewage treatment is stable, suitable for the capacity of the feeding equipment;  

3.In terms of controlling the pH value of sewage and stabilizing water quality, the neutralization capacity of different sewage can be used to reduce the consumption of chemicals in the neutralization;  

4.Prevent high concentrations of toxic substances from directly entering the biochemical treatment system;  

5.When the factory or other system temporarily stops discharging sewage, it can still continue to input sewage into the treatment system to ensure the normal operation of the system。

四.What are the classifications of regulating pools?

According to the type, the regulating pool can be divided into two categories, the water quantity regulating pool and the water quality regulating pool。

五.How to understand the water regulation tank?

Water regulation is relatively simple, generally only need to set up a simple pool, maintain the necessary adjustment pool volume and make the water uniform。  

There are two ways of simple water regulation in sewage treatment: one is in-line regulation, the inlet water is generally gravity flow, the outlet water is lifted by pump, the highest water level in the pool is not higher than the design water level of the inlet pipe, the lowest water level is the dead water level, and the effective water depth is generally 2 ~ 3m。The other is off-line regulation, the regulation pool is located on the bypass, when the sewage flow is too high, the excess sewage is pumped into the regulation pool, when the flow is lower than the design flow, and then from the regulation pool back to the collection well, and sent to subsequent treatment。

Compared with in-line regulation, the regulating pool is not limited by the height of the inlet pipe, and the construction and sludge discharge are more convenient, but the regulated water needs to be lifted twice, and the power consumption is large。It is generally designed for in-line adjustment。

六.How to understand the water quality control tank?

The task of water quality regulation is to mix sewage at different times or from different sources to make the effluent water more uniform, so as to avoid excessive impact load on subsequent treatment facilities。

 1.External power regulation: external power is in the regulating pool, the use of external impeller mixing, air mixing, pump circulation and other equipment to force the water quality regulation, its equipment is relatively simple, good operation effect, but the operation cost is high。  

2.Differential flow mode adjustment: The use of differential flow mode for forced adjustment, so that different time and different concentrations of sewage water quality of their own hydraulic mixing, this way basically no operating costs, but the equipment is more complex。  

七.Why do some regulating ponds also need aeration equipment?

The main function of the regulating tank is to regulate the quantity and quality of water,However, the water entering the regulating tank also contains a certain amount of suspended matter,The suspension precipitates without stirring equipment in the regulating tank,Reduce the regulating pool volume,Aeration equipment is mainly used for stirring purposes,Aeration mixing is less maintenance than mechanical mixing,A small investment,Easier to achieve。In addition, some sewage plants can improve the biodegradability of sewage by pre-aeration。

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