A method for regulating the aeration rate of an MBR device and a method for using the MBR device to treat landfill leachate
A technology of aeration and biochemical treatment, applied in the adjustment method of biological treatment, the treatment of polluted groundwater/leachate, water/sewage treatment, etc., can solve problems such as the inability to guarantee the filtration performance of activated sludge, and prolong the cycle. , to ensure the filtration performance, the effect of improving the water production rate
Active Publication Date: 2020-11-03
浙江博世华环保科技有限公司
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Problems solved by technology
Constant effluent dissolved oxygen can ensure the oxygen demand of the microbial system and ensure the removal rate of pollutants by the system, but it cannot guarantee the filtration performance of activated sludge
Method used
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Embodiment 1
[0050] A method for regulating the aeration rate of an MBR device, which uses dissolved oxygen content and soluble protein content as detection parameters in the biochemical treatment process to regulate the aeration rate of the MBR device;
[0051] Specific steps are as follows:
[0052] (1) Set the initial control value C of dissolved oxygen 0 =4mg / L;
[0053] (2) Detect the actual dissolved oxygen content C in the biochemically treated effluent water x and soluble protein content C p , by daily mean soluble protein content and five-day average soluble protein content Calculate the change rate L of the soluble protein content;
[0054] The formula for calculating the change rate L of soluble protein content is:
[0055]
[0056] in, is the daily average soluble protein content, is the five-day average soluble protein content; t is the number of days; L is the change rate of soluble protein content.
[0057] The formula for calculating the five-day average sol...
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The invention discloses a method for adjusting and controlling the aeration amount of an MBR device and a method for treating landfill leachate by using the MBR device. The method comprises the stepsof setting an initial control value C0 of dissolved oxygen; detecting an actual dissolved oxygen content Cx and an actual soluble protein content Cp in biochemical treatment effluent, and calculatinga change rate L of the soluble protein content; with the change rate L as a variable, calculating a finely-adjusted value deltaC of the dissolved oxygen; setting a sum of the C0 and the deltaC as a control value C1 of the dissolved oxygen; adjusting and controlling the aeration amount of the MBR device by comparing the C1 with the actual dissolved oxygen content Cx; making C0 equal to C1, and repeating the steps (2) to (4) until adjustment and control are finished. By means of the methods, the pollutant removal rate of a biochemical treatment unit of the MBR device can be ensured, the performance of a membrane treatment unit for filtering activated sludge can also be ensured, and therefore the pollutant degradation rate and the water production flux are both increased.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for regulating the aeration rate of an MBR device and a method for using the MBR device to treat landfill leachate. Background technique [0002] In the field of sewage treatment, MBR (membrane bioreactor) is a combined process of activated sludge method and membrane separation technology. The pool separates the mud and water, which has the advantages of high processing efficiency and low land occupation. The MBR process generally consists of a biochemical treatment unit and a membrane treatment unit. In the biochemical treatment unit, the pollutants in the sewage are degraded through the assimilation or dissimilation of microorganisms, and the treated water and microbial mixture (activated sludge) are separated by the membrane treatment unit, and the effluent is discharged or recycled according to different water quality requirements. use. The pollutant degr...
Claims
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IPC IPC(8): C02F3/12C02F9/14C02F103/06
CPCC02F1/44C02F1/444C02F3/006C02F3/1205C02F3/1268C02F3/30C02F3/301C02F2103/06C02F2209/005C02F2209/22Y02W10/10
Inventor 陈昆柏金祥福温俊明盛浩张明常伟杰徐辰陈宝
Owner 浙江博世华环保科技有限公司