Sludge bulking predetermining method by activated sludge process in sewage treating process

A technology for sludge bulking and sewage treatment, applied in water/sludge/sewage treatment, biological water/sewage treatment, anaerobic digestion treatment, etc., can solve problems such as frequent fluctuations in water load, serious hazards, increased sludge bulking, etc.

Inactive Publication Date: 2011-03-30
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0009] (3) The hazard is serious and difficult to control
[0011] (1) Most of the domestic urban pipe network construction adopts the combined rain and sewage system, the composition of the incoming water is relatively complex, and the incoming water load fluctuates frequently and greatly;
[0012] (2) Some enterprises often discharge unqualified industrial sew

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  • Sludge bulking predetermining method by activated sludge process in sewage treating process
  • Sludge bulking predetermining method by activated sludge process in sewage treating process
  • Sludge bulking predetermining method by activated sludge process in sewage treating process

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Embodiment Construction

[0062] A method for predicting sludge bulking in an activated sludge process sewage treatment process of the present invention comprises the following steps:

[0063] 1. Establish a sludge bulking symptom database;

[0064] 2. Analyze the key offline data through expert knowledge, and simply classify the current working conditions;

[0065] 3. Carry out corresponding treatment for different working conditions.

[0066] Such as figure 2 As shown, the sludge bulking symptom database established in the first step includes:

[0067] 11. Gather an initial dataset

[0068] First, the initial data set of the sludge bulking symptom database is obtained by recording and storing the process historical data of the automatic control system, and the historical data of a period of time before the sludge bulking has occurred or is about to occur can be used as the initial data set. Two types of historical data are included here: one is the historical data 2-3 days before the occurrence ...

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Abstract

The invention relates to a sludge bulking predetermining method by an activated sludge process in a sewage treating process, comprising the following steps: establishing a sludge bulking symptom database; analyzing key off-line data by means of the expert knowledge; simply classifying the current working condition; carrying out corresponding treatment aiming at different working conditions, wherein, the sludge bulking symptom database establishment comprises the primary data set collection; recording the stored process history data through an automatic control system to obtain the primary data set of the sludge bulking symptom database; determining the structure of the database and a sludge bulking symptom attribute; analyzing the sewage treating process data by means of the mastered expert knowledge; and utilizing on-line process data which can dynamically reflect the sludge bulking symptom information to serve as the sludge bulking symptom attribute. By combining the expert knowledge and a data drive method, the method of the invention has the advantages that qualitative data, quantitative data, the off-line data and the on-line data can be comprehensively analyzed, the sludge bulking can be accurately predetermined, the occurrence frequency of the sludge bulking is reduced, the safe and stable operation of a sewage treating system is ensured, and the system maintenance expense is lowered.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a method for predicting sludge expansion in activated sludge process sewage treatment process Background technique [0002] With the continuous acceleration of urbanization and the rapid development of industry, the discharge of urban sewage and industrial sewage in my country has increased year by year, and the situation of water pollution prevention and control is extremely severe. As the core of the water pollution prevention and control system, the sewage treatment plant plays a very important role. Reducing the occurrence of abnormal conditions in sewage treatment plants, especially serious abnormal conditions, and ensuring their reliable and stable operation are of great significance to the sustainable use of resources and environmental protection. [0003] Sludge bulking is one of the most serious abnormal working conditions faced by activated sludge process wastewater tre...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F3/28G06F17/30G06N5/00
CPCY02W10/10
Inventor 于广平苑明哲滕琳琳王景扬
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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