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Treatment process for plumbic acid waste water generated in production process of lead storage batteries

A production process, lead-acid battery technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problems of complex operation process and high energy consumption, and achieve Effect of less sludge amount, less sludge, and reduction of fresh water consumption

Inactive Publication Date: 2014-01-01
ANHUI GREEN TITAN ENVIRONMENTAL TECH
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AI Technical Summary

Problems solved by technology

The distribution and operation of the existing treatment process is complicated and the energy consumption is high

Method used

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  • Treatment process for plumbic acid waste water generated in production process of lead storage batteries

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with specific embodiments.

[0024] A process for the treatment of lead-acid waste water produced in the production process of lead-acid batteries, comprising the following steps:

[0025] The wastewater first enters the grease trap to remove the large volume of suspended solids and oil in the wastewater, and then enters the sump to adjust the water quality and quantity. The wastewater is lifted to the pH adjustment tank 1 by the lift pump, and the NaOH solution with a mass concentration of 30% is added and Stir roughly to adjust the pH to between 5-6; the water from the pH adjustment tank 1 flows into the pH adjustment tank 2 by itself, add NaOH solution with a mass concentration of 30%, and stir to further adjust the pH to between 9-9.5, lead ions and hydrogen Oxygen ions generate lead hydroxide precipitation; then enter the flocculation reaction tank, by adding flocculant PAC, PAM, the dos...

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Abstract

The invention relates to a treatment process for plumbic acid waste water generated in the production process of lead storage batteries. The treatment process comprises the steps that large-size suspended matter engine oil in the waste water is removed, the waste water enters a water collection pool later, the water quality and water amount are adjusted, alkali liquor is added for adjusting pH of the waste water, the waste water and lead hydroxide sediments enter a flocculation reaction tank, a flocculating agent is added, heavy metal is caught, a colloid is formed, sludge and the water are separated and clarified through an inclined tube precipitator and by means of gravity settling, upper liquor and the sludge are separated, the upper liquor automatically flows to a quartz sand filter through an overflow weir, suspended matter and total lead are removed, then the upper liquor flows to an activated carbon filtering layer, the suspended matter and the total lead are further removed, filtered outlet water enters a pH return tank, diluted hydrochloric acid with the concentration of 10 percent is added to adjust pH to be neutral, and then the filtered outlet water enters a clean water basin and is cycled and reused. According to the treatment process, harmful chemical reagents are not used, the sludge quantity is small, secondary pollution is avoided, the discharged water can be reused, metal in the bacterial sludge can be recovered, the bacterial sludge can be used as fertilizer, and therefore resources and the cost are saved.

Description

technical field [0001] The invention relates to a treatment process for lead-acid wastewater, which belongs to the technical field of harmless treatment of heavy metal (Pb) industrial wastewater, in particular to a treatment process for lead-acid wastewater produced in the production process of lead storage batteries. Background technique [0002] Lead-acid batteries produce lead-acid wastewater in the production process. If not treated, it will seriously affect the health of the workers and cause serious harm to the surrounding environment. In the process of manufacturing lead-lead batteries, the discharged wastewater mainly comes from processes such as acid preparation, plate coating, chemical formation, etc., or water for ventilation and dust removal, rinsing wastewater formed into plates, cleaning wastewater after lead-acid batteries are assembled, waste water containing lead smoke in the workshop, lead Dust wastewater treatment and wastewater generated from floor washin...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F11/12
Inventor 姚明姚昊李双建胡召堂赵晓刚
Owner ANHUI GREEN TITAN ENVIRONMENTAL TECH
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