Circulating water pollution emission standard-reaching treatment device
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A treatment device and circulating water technology, applied in water/sewage treatment, biological water/sewage treatment, oxidized water/sewage treatment, etc., can solve high operating costs, failure to meet discharge requirements, and unsatisfactory treatment effects of advanced sewage treatment processes etc. to achieve low operating costs, improve biodegradability, and ensure microbial activity
Inactive Publication Date: 2019-02-22
DAQING ZHONGLAN PETROCHEMICAL CO LTD +1
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[0003] The technical problem to be solved by the present invention is to overcome the problem of unsatisfactory treatment effect of the existing advanced sewage treatment process existing in the background technology, which cannot meet the discharge requirements and high operating costs
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Embodiment 1
[0034] Several biological fillers are placed in the post-biochemical BAF pool 3, and the biological fillers are composed of a carrier and a microbial film hanging on the surface of the carrier;
[0035] The preparation method for placing several biological filler carriers in the post-biochemical BAF pool 3 comprises the following steps:
[0036] Weigh 72 parts of high-density polyethylene, 12 parts of polypropylene resin, 8 parts of hydrated lime, 18 parts of Dow powdered activated carbon, 8 parts of light calcium carbonate, 4 parts of maleic anhydride, 0.25 parts of dicumyl peroxide, and 1.8 parts of gelatin parts, 1.8 parts of chitin, and 0.8 parts of magnetic powder ferromagnetic powder.
[0037] Step 1, get 4 parts of maleic anhydride, 0.25 part of dicumyl peroxide, dissolve them with 2.5 kilograms of acetone to make acetone solution, place in mixer;
[0038] Step 2: Add 72 parts of high-density polyethylene, 12 parts of polypropylene resin, 8 parts of slaked lime, 18 par...
Embodiment 2-4
[0046] The contents of the biological filler carriers placed in the post-biochemical BAF pool 3 of Examples 2-4 are shown in Table 1, and the rest are the same as in Example 1.
[0047] The prepared biological filler carrier was subjected to BAF biochemical test, and the test results are shown in Table 2.
[0048] The test result of table 2 carrier
[0049]
[0050] It can be seen from Table 2 that the film-hanging time of the carrier prepared by the method of the present invention is obviously shortened, and the removal rate of COD and ammonia nitrogen is obviously improved.
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Abstract
The invention relates to a circulating water pollution emission standard-reaching treatment device, mainly aiming at solving the problems of an existing sewage deep treatment technology that the treatment effect is not ideal, the emission requirements cannot be met and the operation cost is high. The circulating water pollution emission standard-reaching treatment device is characterized in that afilter (16) is connected into a catalytic oxidation tank (1) through a water inlet pipeline (7); the bottom of the catalytic oxidation tank (1) is connected with an ozone generator (8); the catalyticoxidation tank (1) is connected with an oxidization stabilization tank (2), a post-biochemical BAF tank (3) and a clean water tank (4) in sequence; the clean water tank (4) is provided with a water inlet hole and a water outlet hole; the water inlet hole of the clean water tank (4) is connected with the post-biochemical BAF tank (3); the water outlet hole (42) of the clean water tank (4) is connected to one end of a backwashing pump (11); and the other end of the backwashing pump (11) is connected into the catalytic oxidation tank and the post-biochemical BAF tank respectively through a reflowing pipeline (10). By adopting the circulating water pollution emission standard-reaching treatment device, the requirements of first-grade emission standards can be met and the operation cost is low.
Description
technical field [0001] The invention relates to the technical field of petroleum circulating water sewage treatment, in particular to a treatment device for circulating sewage sewage up to standard. Background technique [0002] At present, the advanced treatment processes for high-salt sewage in the petrochemical industry mainly include biological oxidation and physical-chemical advanced oxidation. The biological oxidation method is represented by the MBR process, and its shortcoming lies in the biodegradability of high-salt advanced treatment sewage Extremely poor (BOD<10), the biochemical process has limited effect and cannot meet the requirements of the first-class sewage discharge standard; advanced oxidation processes include ozone direct contact oxidation, Fenton reagent, etc. The oxidizing ability of the substance is limited, and the treatment effect is unstable. Fenton oxidation technology has problems such as difficult operation, high operating cost, large amou...
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