Method for improving salt resistance capability of freshwater activated sludge nitrifying flora

A technology of activated sludge and nitrifying bacteria, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problem of insignificant improvement of microbial activity and difficulties in the operation of sewage treatment plants, etc. problems, to achieve stable and efficient biological treatment effects, stable treatment effects, and improved salt tolerance

Active Publication Date: 2013-10-16
北京中汉汇德环境科技有限公司
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Problems solved by technology

However, these measures did not significantly increase the microbial activity
Moreover, sewage treatment plants have great difficulty in operating

Method used

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  • Method for improving salt resistance capability of freshwater activated sludge nitrifying flora

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specific Embodiment approach

[0032] The salinity detection probe uses WTW (German company) conductivity salinity probe, and the salinity detector uses WTW (German company) conductivity salinity meter. The mixer is connected to the external power supply and is in the state of stirring.

[0033] Step 1, it is the potassium chloride of C=224000mg / L that configuration saturated concentration is C=224000mg / L with potassium chloride in the potassium concentrated solution reserve tank, guarantees impeller stirrer 9 to constantly stir, keeps the stability of concentration; System setting, the preset value of setting salinity Set the value to 8g / L;

[0034] Step 2: Put the salinity detection probe and the outlet pipe of the metering pump deep into the liquid level of the aeration tank in the MUCT process. Place the salinity detector, the upper computer of the automatic control system, and the potassium concentrate storage tank on one side of the MUCT reactor;

[0035] Step 3, the salinity detection probe detects...

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Abstract

The invention relates to a method for improving salt resistance capability of freshwater activated sludge nitrifying flora, in particular to a method for reducing toxic inhibition of salinity on living beings when a sewage treatment plant is interfered by invasion of the salinity. The method is based on a hardware system composed of a salinity detection probe, a salinity detector, an automatic control system upper computer, a potassium concentrated solution reservation box and a metering pump. The method comprises the steps that the salinity detection probe measuring a salinity value at the position of a water inlet end of an aeration tank of the sewage treatment plant in real time, and the salinity value is sent to the automatic control system upper computer through the salinity detector; the automatic control system upper computer judges whether the salinity value is larger than a setting value and sends out corresponding control commands to control the metering pump; and the metering pump continuously pumping potassium concentrated solution from the potassium concentrated solution reservation box to the aeration tank according to the control commands. The method is simple in implement, easy to operate and capable of achieving stable and efficient biological treatment effects under the conditions without salinity dilatation and desalination.

Description

technical field [0001] The invention relates to a method for improving the salt-tolerant ability of nitrifying bacteria in activated sludge, and improving its activity and specific degradation rate in a saline environment, especially for a method for reducing the salt concentration when a sewage treatment plant is disturbed by salinity intrusion. Methods of inhibition of salinity on biological toxicity. Background technique [0002] Globally, the ecological threat posed by elevated salinity in freshwater environments has received attention. In addition to natural processes, many human activities can lead to the introduction of inorganic salts into freshwater systems. For example, in some coastal cities, due to the shortage of fresh water resources, the use of sea water to replace fresh water for general life (sea water flushing, road flushing, etc.) has become an effective measure to alleviate the water crisis. The saline wastewater produced by large-scale domestic seawate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
Inventor 崔有为陈永宝
Owner 北京中汉汇德环境科技有限公司
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