Treatment method of heavy metal wastewater
A treatment method, heavy metal technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of reduced phosphorus removal rate, poor nitrogen and phosphorus removal effect of biochemical system, and inability to Realize the problems of refractory heavy metal wastewater, such as full factor compliance, and achieve the effect of increasing project cost, increasing concentration and biochemical reaction rate, and expanding pool capacity
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[0033] Example 1
[0034] A treatment method for heavy metal wastewater, see the process flow chart figure 1 , Specifically including the following steps:
[0035] (1) The heavy metal wastewater is input to the classification collection and treatment device 2 through the wastewater collection device 1; in the specific treatment process, according to the production situation of the workshop, the heavy metal wastewater to be treated is first classified according to the production process, and the heavy metal wastewater is divided into pre-treatment water, Comprehensive water, mixed wastewater, nickel-containing water, chromium-containing water, phosphorus-containing water, copper-containing water and cyanide-containing water; adjust pH to 8-9, flocculation precipitation, redox and / or micro-electrolysis and other conventional pretreatments .
[0036] (2) The supernatant of the wastewater treated in step (1) is sequentially input into the hydrolysis acidification reaction tank A 1 , An...
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