Some grease chemical plant is raw material to produce the product such as acid of of all kinds tristearin, glycerine, oleic acid with moving vegetable oil, useless glycerine to wait, liquid waste is nigrescent, CODCr, , BOD5Concentration is high, show acidity. The example that at present home administers this kinds of liquid waste successfully is less, on the foundation of lab test, oxygen of applied be disgusted with is folded shed reactor, foreword approves type activated sludge craft (abbreviation ABR, SBR law) undertake administering to this liquid waste, be debugged more through a year and move, water quality giving water is stable, can reach a nation one class discharges a standard (CB8978, 96) , equipment runs stability.
1 liquid waste treats a design
This plant waste water basically comes from acidification, hydrolyze, clean wait for craft, basically contain in liquid waste move acid of vegetable oil, of all kinds tristearin, oleic acid to wait.
Design water quantity attachs most importance to 50m3/ D, . The nation should be reached after liquid waste classics is handled one class discharges a standard (CB8978, 96) , circumstance of water quality of water of pass in and out sees a table 1.
(Mg · L- 1) ρ (CODCr) /
(Mg · L- 1) ρ (SS) /
(Mg · L- 1) ρ (NH3- N) /
(Mg · L- 1) PH is worth ρ (use vegetable oil) /
(Mg · L- 1) the design handles 10 of ≤ of 15 6-9 of ≤ of ≤ 70 of 100 of ≤ of water ≤ 20 into 120 of water 3000 5000 800 80 2-4 ≤
1.1 liquid waste handle technology
This project uses biology law to handle technology for main body, in order to lie between oily pool, sedimentation basin is pretreatment craft. Mud emits into mud pool regularly, work after changing outside carry. Technological process sees a picture 1.
1.2 Basically build content and facility
1.2.1 Lie between oily pool
Use advection to lie between oily pool, 2h of hydraulic retention period. Float oil undertakes reclaiming. 3.0m of × of planar dimension 2.0m, 3.0m of effective depth of water.
1.2.2 Adjust pool
Adjust retention period is the pool 14h. 4.0m of × of planar dimension 6.0m, 3.2m of effective depth of water.
1.2.3 Inclined tube sedimentation basin
Sedimentation basin front sheds response division to come back, coagulation area, hind paragraph for area of inclined tube precipitation. Response division uses the impulsive force that promotes water pump, form inside response division come back stream, make milk of lime and liquid waste react adequately, ca(OH)
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