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Treatment process of pickling wastewater
FROM: YIHUA DATE: 2021-06-30 Read()
This time brings you an introduction to the treatment process of pickling wastewater. The workpiece produced by many machinery manufacturing enterprises needs to be cleaned with acidic lotion. I do not know how to treat the wastewater produced.
Acid pickling wastewater treatment equipment
Want to treat some sewage, we must first analyze the water quality, pickling wastewater is to remove the metal surface oxide, using nitric acid, sulfuric acid, hydrochloric acid, phosphoric acid and so on through pickling treatment, so as to produce wastewater.
Source of pickling wastewater: machinery factory, electroplating plant, steel plant and so on.
Treatment process of pickling wastewater
Hazard of acid washing wastewater: after the acid washing wastewater is carried on the soil, it will cause soil calcification, destroy the loose state of the soil layer, seriously affect the production of crops, and the water with high acidity will cause serious harm to people and animals.
Characteristics of pickling wastewater: pH value is generally below 1.5, is strongly acidic, contains a large number of phosphate, zinc ions and other substances, different production processes may have other complex components, treatment is difficult.
Technical plan for wastewater treatment equipment containing acid lotion
Pickling wastewater process: according to years of experience, we recommend the use of the process for customers: coagulation, precipitation, filtration process, and the production of coagulation precipitation filtration machine for customers, investment saving, low operating costs. The following is a brief description of the device.
Technical plan for wastewater treatment equipment containing acid lotion
Pickling wastewater treatment equipment process: regulating pool - agitation (pH adjustment) - flocculation pool (PAC PAM dosing) - sedimentation tank - clear pool - quartz sand filter - activated carbon filter - discharge or reuse
Wastewater first through the regulating pool using pH automatic alkali device to adjust pH to neutral (pH value is controlled by pH automatic controller), adjust the water quality and amount of water, the regulating pool is set up floating ball level meter, used to control the start and stop of the lifting pump, and then the lifting pump into the flocculation pool, to the flocculation pool to add PAM, PAC flocculation, Will not easily tiny suspended particles flocculation precipitation for larger particles by scraping conveyer, the oil in the water is clean enough, and then enter the tank, the water by the pool in the center of pressure pipe from top to bottom into the pool (in pipe flow rate should be less than 30 mm/s), tube consists of umbrella-shaped baffle to make waste water in the pool is uniformly distributed along the whole water slowly rising, The suspended matter settles into the conical mud hopper at the bottom of the pool, and the clarified water flows out of the pool along the surrounding overflow weir. The water flow into the middle pool, is pumped to the quartz sand filter for filtration, and then the water is adsorbed by the activated carbon filter, which can be discharged to the municipal pipe network at this time.
The whole system is controlled automatically by the electronic control system, and can also be manually adjusted for manual control. It is convenient to operate, simple to run, and does not need to be guarded for a long time. Achieve the environmental assessment.
