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A kind of treatment method and treatment system of rubber and plastic sewage
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A treatment method and technology for sewage, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. Ecological balance and other issues, to overcome the high chloride ion, the effect is good
Active Publication Date: 2017-05-17
SHANDONG RIKE PLASTIC RUBBER TECH CO LTD
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Sewage pH is low, which is acidic wastewater. If the COD and suspended solids in the water are not treated, they will cause irreversible damage to the direct discharge river and affect the ecological balance of the river.
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Embodiment 1
[0023] Embodiment 1 A kind of treatment method of rubber and plastic sewage
[0024] Such as figure 1 As shown, the specific steps are as follows:
[0025] (1) Pretreatment
[0026] Import the rubber and plastic sewage into the acid-base adjustment tank, use limestone to adjust the pH of the sewage, pH ≥ 5; the adjusted sewage enters the coagulation reaction tank, add flocculant and lye to the pool, and use lye to adjust the pH range 7-8 ; After the coagulation reaction, the sewage is introduced into the primary settling tank, and the initial settling time is 8 hours; after the suspended matter in the wastewater in the primary settling tank settles, it is regularly discharged to the sludge concentration tank through the pipeline, and the supernatant flows into the No. 1 sump by itself. Ready to enter the biological treatment system;
[0027] The flocculants are PAC (polyaluminum chloride) and PAM (polyacrylamide), and the amount of PAC added is 0.06kg / m 3 , the drug-dissol...
Embodiment 2
[0033] Example 2 System for Rubber and Plastic Sewage Treatment
[0034] Such as figure 2As shown, the system for rubber and plastic sewage treatment includes acid-base adjustment tank 1, coagulation reaction tank 2, primary sedimentation tank 3, No. 1 sump 4, cooling tower 5, hydrolytic acidification tank 6, aerobic tank 7 , blowing device 8, secondary settling tank 9, No. 2 water collection tank 10, high-efficiency catalytic oxidation reaction tower 11, blow-off tank 12, final settling tank 13, sludge concentration tank 14, sludge dehydration device 15, dry sludge disposal device 16. The acid-base adjustment tank 1 is connected to the coagulation reaction tank 2 through a pipeline, the coagulation reaction tank 2 is connected to the primary sedimentation tank 3 through a pipeline, and the No. 1 outlet of the primary sedimentation tank 3 is connected to the No. 1 outlet through a pipeline. The sump 4 is connected, the No. 2 outlet is connected with the sludge thickening tan...
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Abstract
The invention relates to a treatment method and a treatment system for rubber and plastic sewage. The treatment method comprises the specific steps of pretreatment, biotreatment and depth treatment. The treatment system comprises a acid-base regulation pool, a coagu-flocculation reaction pool, a primary settling tank, a first collecting tank, a cooling tower, a hydrolysis acidification pool, an aerobic tank, a blower device, a secondary sedimentation tank, a second collecting tank, an efficient catalytic oxidation reaction tower, an air stripping pool, an end sedimentation tank, a sludge thickening pool, a sludge dehydration device and a dry mud treatment device. For the rubber and plastic sewage generated by producing chlorinated polyethylene with a water phase suspension method, the treatment method and the treatment system can effectively overcome the problems of high chloridion and poor biochemical quality, and after the rubber and plastic sewage is treated by the treatment method and the treatment system, all indexes reach national standards.
Description
technical field [0001] The invention relates to a treatment method and system for rubber and plastic sewage, belonging to the field of sewage treatment. Background technique [0002] Rubber and plastic sewage refers to the sewage produced in the process of producing chlorinated polyethylene. Chlorinated Polyethylene (Chlorinated Polyethylene) is a saturated polymer material with a white powder appearance, non-toxic and tasteless, and has excellent weather resistance, ozone resistance, and water resistance. Chemical and aging resistance, good oil resistance, flame retardancy and coloring performance. Good toughness (still flexible at -30°C), good compatibility with other polymer materials, and high decomposition temperature. At present, the production methods of chlorinated polyethylene are mainly by solution method, suspension method and solid-phase chlorination method; wherein, the solution method is separated from the reaction liquid chlorinated polyethylene and removed t...
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