Rapid culture method of denitrified granular sludge
A technology of granular sludge and cultivation method, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problem of sludge loss and denitrification efficiency, low, and denitrification granular sludge cultivation speed Slow and other problems, to achieve the effect of good settling performance and reducing sludge concentration loss
Inactive Publication Date: 2020-10-02
王磊
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Problems solved by technology
The rapid cultivation method of denitrification granular sludge can quickly and effectively increase the concentration of aerobic granular sludge, which breaks through the problems of slow cultivation speed of denitrification granular sludge and serious sludge loss in the initial stage of start-up, and low denitrification efficiency in the existing process
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0036] In this example, the aerobic granular sludge cultivation device adopts a sequencing batch reactor (sequencing batch reactor, SBR), and the inoculated sludge comes from the activated sludge of the aerobic biochemical section of a sewage treatment plant, and the simulated wastewater with a low carbon-to-nitrogen ratio is used as the influent Carry out the cultivation of denitrification granular sludge.
[0037] The parameters of the sequencing batch reactor (hereinafter referred to as: SBR reactor) used in this embodiment are as follows: the SBR reactor adopts organic glass material, with a diameter of 80mm, a height of 500mm, and an effective volume of 2L. The bottom of the SBR reactor is provided with an aerat...
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The invention discloses a rapid culture method of denitrified granular sludge. Dehydrated sludge particles are put into a sequencing batch reactor, wherein the sequencing batch reactor performs a plurality of culture periods, each culture period comprises a water inlet step, an anoxic step, an aerobic step, a static precipitation step and a drainage step, and the pH is not adjusted 48-480 hours before the sequencing batch reactor operates, so that dewatered sludge particles in the sequencing batch reactor are subjected to micro-expansion. According to the invention, a basis is provided for rapid culture of denitrified granular sludge and rapid formation of denitrification performance, and dewatered granules have good denitrification and organic pollutant removal effects immediately after being added into the SBR reactor operated according to the parameters contained in the invention.
Description
technical field [0001] The invention relates to the technical field of wastewater biological treatment, in particular to a rapid cultivation method for denitrification granular sludge. Background technique [0002] With the acceleration of production, life and urbanization, nitrogen pollution in water bodies is becoming more and more serious, resulting in aggravated eutrophication of water bodies. The traditional biological denitrification process is based on flocculent sludge, which has the advantages of long process flow and land occupation. Due to problems such as large area, high infrastructure costs, low treatment efficiency, and low impact load resistance, the development and research of efficient and low-consumption wastewater denitrification technology has become an urgent task in the field of water pollution control, and has increasingly attracted extensive attention from researchers. focus on. [0003] Aerobic granular sludge is a granular microbial aggregate form...
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Login to View More IPC IPC(8): C02F3/30C02F3/34C02F101/16C02F101/30
CPCC02F3/30C02F3/34C02F2101/16C02F2101/30C02F2209/14C02F2209/16C02F2209/08
Inventor 王磊何晔
Owner 王磊