Method for extracting humic acid from landfill leachate
A landfill leachate and humic acid technology, applied in chemical instruments and methods, neutralized water/sewage treatment, water/sludge/sewage treatment, etc. Large humic acid colloid size and other issues, to achieve the effect of reducing membrane fouling
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[0022] In order to fully understand the technical content of the present invention, the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto.
[0023] The present invention provides a method for extracting humic acid from landfill leachate, which is carried out according to the following steps:
[0024] 1. Pass the landfill leachate through Anaerobic Reactor (UASB), Reaction Tank (SBR), Continuous Microfiltration System (CMF) and Reverse Osmosis Membrane (RO) in sequence to obtain reverse osmosis concentrate after combined treatment;
[0025] 2. Adjust the pH value of the concentrate to 6-6.5, pump it into the primary ultrafiltration system, the operating pressure is 0.9Mpa, the obtained primary ultrafiltration permeate is recycled to the reverse osmosis concentrate, and the primary ultrafiltration is retained Precipitating agent Na for liquid 3 PO 4 ·12H 2 O removes calcium and magnesium ions, and then pumps i...
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