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A sewage treatment device and method

A sewage treatment method and sewage technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, sludge treatment, etc., can solve the problem of efficient removal of excess sludge and nitrogen and phosphorus pollutants, and aggravating process systems The burden of nitrogen and phosphorus pollutants, affecting the effect of process sewage treatment, etc., to achieve the effect of improving sewage treatment performance, improving municipal sewage and sludge, and improving sewage treatment performance

Active Publication Date: 2015-10-07
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the OSA process changes the microbial population structure and sludge properties in the original aerobic activated sludge to a certain extent, and affects the sludge activity of the system while reducing the sludge volume, which in turn affects the sewage treatment effect of the process. , such as increasing the burden of nitrogen and phosphorus pollutants in the process system, thus increasing the total nitrogen and total phosphorus in the effluent
[0006] It can be seen that in the existing sewage treatment process, there are some common problems in the treatment of excess sludge by chemical, physical, and biological processes, or in the new process of biological phosphorus and nitrogen removal. Efficient removal of nitrogen and phosphorus pollutants

Method used

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  • A sewage treatment device and method
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  • A sewage treatment device and method

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Embodiment 1

[0039] Construction of the device: a sewage treatment device (refer to the attached figure 1 ). The device includes a water inlet system 1 , a sewage aerobic reaction tank 2 , a sludge anaerobic reaction tank 3 , a nitrogen and phosphorus treatment system 4 , a water outlet system 5 , an excess sludge treatment system 6 and a microelectronic timing automatic control system 15 .

[0040] The water inlet system 1 is connected to the sewage aerobic reaction tank 2 through the water inlet pump 11, the water outlet system 5 is connected to the sewage aerobic reaction tank 2 through the water outlet pump 14, and the sewage aerobic reaction tank 2 is connected to the sludge anaerobic reaction tank 3. The effluent sludge enters the excess sludge treatment system 6 through the pipeline, and the aerobic settled sludge in the sewage aerobic reaction tank 2 enters the sludge anaerobic reaction tank 3 through the aerobic sludge return pump 12, and the sludge anaerobic reaction The anaerob...

Embodiment 2

[0048] Use the device constructed in Example 1 to carry out a sewage treatment method that can simultaneously realize the reduction of excess sludge and the efficient removal of nitrogen and phosphorus. The treatment process is shown in figure 2 . The specific method is as follows:

[0049] (1) The sewage enters the sewage aerobic reaction tank 2 through the water inlet system 1 and the water inlet pump 11, the aeration volume is adjusted by the fan 18 and the aeration device 17, and the sludge in the sewage aerobic reaction tank 2 is kept in a state of Fully mixed state.

[0050] (2) The sludge mixture from the sewage aerobic reaction tank 2 is introduced into the sludge anaerobic reaction tank 3, first enters the first compartment of the sludge anaerobic reaction tank --- anaerobic main reaction zone 7, and then enters the sludge The second compartment of the anaerobic reaction tank --- the sedimentation exchange area 8, the sludge settled in the second compartment flows ...

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Abstract

The invention specifically discloses a sewage treatment unit and a method thereof. The unit comprises a water inflow system, a sewage aerobic reaction tank, a sludge anaerobic reaction tank, a nitrogen and phosphorus treatment system, a water outflow system and a sludge residue treatment system; the sludge anaerobic reaction tank comprises a main anaerobic reaction area and a sediment exchange area; and the nitrogen and phosphorus treatment system is a struvite nitrogen and phosphorus treatment system comprising a mixed drug reaction area and a sedimentation area. The sewage treatment unit realizes both the reduction of the sludge residue and the efficient removal of nitrogen and phosphorus pollutants, wherein the reduction of the sludge residue has a good and stable effect, and the removal effect of the nitrogen and phosphorus pollutants is obvious and cost of construction and operation is low and has long-term economic, environmental and social benefits, and can realize automatic management of a whole process.

Description

technical field [0001] The invention belongs to the field of sewage treatment technology, and in particular relates to a sewage treatment device and method. Background technique [0002] Activated sludge process is widely used in urban sewage treatment plants because of its high removal effect of organic pollutants. However, the operating cost of the current activated sludge process is relatively high, among which the treatment and disposal of excess sludge account for a large proportion, usually around 30% to 60%, and most of the sludge has been dehydrated (with a water content of 80% left and right) directly to landfill treatment, which on the one hand has generated huge costs, and on the other hand has also brought serious secondary pollution problems. In addition, the traditional biological nitrogen and phosphorus removal process has been widely used due to its advantages of simultaneous removal of carbon, nitrogen, and phosphorus and low treatment cost, but the process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/00C02F11/04C02F11/02
CPCY02W10/27Y02W10/20
Inventor 孙连鹏崔语涵郭五珍叶挺进罗旺兴
Owner SUN YAT SEN UNIV