Method for treating and printing and dyeing wastewater by using hydrolysis tank
A technology of printing and dyeing wastewater and hydrolysis pool, which is applied in textile industry wastewater treatment, multi-stage water/sewage treatment, biological water/sewage treatment, etc. It can solve the problems of no successful cases, reduced effective pool capacity, and reduced treatment efficiency. Achieve the effects of easy film formation, promotion of metabolism and renewal, and improvement of treatment efficacy
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[0024] Example 1
[0025] The printing and dyeing wastewater is refractory biodegradable wastewater containing PVA slurry; the hydrolysis tank is divided into two parts, the first half tank 1 and the second half tank 4. The front half of the hydrolysis tank has an inlet, and the second half of the hydrolysis tank has Outlet, the back half tank 4 is connected in series with the oxidation ditch 10 and the secondary settling tank 11; the front half tank 1 is an open tank with an upper opening, the front half tank 1 is filled with filler 2, and the front half tank 1 A perforated intermittent aerator 3 is arranged at the bottom, and the front half of the tank 1 has a baffle 6 at the water inlet. The baffle is suspended above the front half of the hydrolysis tank, and the height of the baffle is less than the depth of the hydrolysis tank; The half tank 4 is a closed tank above, and there are submersible mixers 5 at both ends of a diagonal line of the rear half tank 4; the filler 2 is d...
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