A kind of treatment process of rubber waste water

Abstract

The invention discloses a rubber wastewater treatment process. Large-particle impurities in rubber wastewater are removed through an artificial grille, then the rubber wastewater automatically flows into a water-collecting well, water quality mixture is performed through a regulating hydrolysis tank, parts of organic matter are removed under the effect of facultative anaerobic organic matter, then most of organic matter and total phosphorus are removed through a UASB tank, COD, BOD and other pollutants are removed through a BAF reaction tank, CODcr, NH3-N, SS and total phosphorus in the water are removed through an activated zeolite filter and a biological activated carbon filter, and then the wastewater enters a recovery pool and is lifted to a pipe network system through a pump. The water for backflushing of a BAF, the activated zeolite filter and the biological activated carbon filter enters a sludge concentration pool, a part of supernatant is subjected to reflux through the pump and then enters the regulating hydrolysis tank, and dewatered sludge can serve as a fertilizer used in farmland or rubber forests. The process is feasible in operation, and treated wastewater conforms to the national discharge standards.

Description

Technical field [0001] The invention belongs to the field of wastewater treatment, and specifically relates to a rubber wastewater treatment process. Background technique [0002] The two main products of natural rubber are raw natural rubber and concentrated latex. During the processing of natural raw rubber, the whey flowing out from the coagulation of fresh rubber latex and the whey extracted from the coagulum through thinning and creping are the main sources of waste water in the production process, and part of the waste water generated by the cleaning of the granulation workshop. These wastewater are high-concentration organic wastewater with high acidity, high CODcr content, high suspended solids and bacteria. If they are not treated, they will pollute the surrounding environment, affect river water quality, and disrupt ecological balance. Therefore, it is important to treat rubber factory wastewater. task. [0003] At present, the domestic treatment of natural rubber waste...

AI Technical Summary

Problems solved by technology

[0004] ①The advantage of the natural aeration method of anaerobic-oxidation ponds is that the structure is simple, but it occupies a large area and takes a long time to process (only 20~25 days for a single oxidation pond), and the anaerobic section produces stench

Although the anaerobic-oxidation pond natural aeration method saves the oxidation pond and occupies a small area, the anaerobic section increases the subsequent NH 3 -N conforms to (regardless of anaerobic fermentation or other processes such as UASB), but also produces stench and takes a long time to process

[0005] ②Practice aeration in the aerobic stage. Although the treatment effect is higher, it needs to bear the additional NH increased in the anaerobic stage. 3 -N load, and the lack of follow-up denitrification links such as lack of follow-up anoxic denitrification section, resulting in NH 3 -N processing effect is poor

[0006] ③Oxidation pond-activated sludge mechanical forced aeration method covers a large area, takes a long time without treatment, and has high continuous aeration efficiency but lacks subsequent denitrification links, resulting in NH 3 -N processing effect is poor

[0007] ④ Oxidation pond natural aeration oxidation method, covers a large area, and there will be stench when the aeration is not sufficient

The high-efficiency algae pool (HRAP) and intermittent sand filter (ISF) built on this basis, although HRAP can reduce the content of organic matter, but the growth regulation of algae and the intermittent fully automatic operation of ISF greatly increase the processing difficulty and The disadvantages of investment cost and large footprint have not been overcome

Images