KR950031939A - Apparatus and method for treating high concentration organic wastewater - Google Patents

Abstract

The present invention relates to a treatment apparatus and method capable of efficiently removing carbonaceous organic substances, nitrogen and phosphorus present in high concentration organic wastewater in a city. In the conventional water treatment apparatus and method, a universal activated sludge method applied is nitrogen. Low petroleum removal efficiency of nutrients such as phosphorus and phosphorus is treated without advanced treatment, which causes serious eutrophication if the treated water flows into the effluent. Excessive facility costs and adequacy of treatment technology are required due to the large amount of dilution water required. The present invention provides an aerobic, anoxic, and anaerobic growth zone in which a high concentration of MLVSS mixture is present in a circulating treatment tank (100) separated by a dilution treatment and several partitions, thereby providing carbon present in high concentration organic wastewater. Aging equipment and biological treatment of nitrogen and phosphorus at the same time The supernatant of the mixed liquor is ozonated and mixed with the organic wastewater to be treated, and the dilution effect, denitrification, and non-degradable and untreated contaminants are treated again to obtain more stable treated water quality, and the sludge is separated from the supernatant. It is a useful invention, such as condensation, flocculation and solid-liquid separation with dehydrator, so that stable solid-liquid separation of treated water, reduction of dewatering follicle washing water usage, and miniaturization of dehydrator can be expected.

Description

Apparatus and method for treating high concentration organic wastewater

Since this is an open matter, no full text was included.

1 is a schematic perspective view of a circulating biological treatment tank according to the present invention, and FIG. 2 is a cross sectional view taken along line AA of FIG. 1 schematically showing an organic wastewater treatment circulation inside a circulating biological treatment tank according to the present invention. 3 is a simplified cross-sectional view illustrating a series of organic wastewater treatment cycles of a circulating biological treatment apparatus according to the present invention.

Claims (3)

Aerobic areas separated by partitions in the same tank (first treatment tank 101, second treatment tank 102, third treatment tank 103), anoxic regions (fourth treatment tank 104, fifth treatment) Tank 105], an anaerobic region (sixth treatment tank 106) is formed, and a known intermittent air lift 200 is provided inside the anaerobic region (sixth treatment tank 106). The mixed liquid of the sixth treatment tank 106 in the region is transferred to the seventh treatment tank 107 which is an aerobic region, and the first treatment tank which is an aerobic region through the transfer line 108 using the potential energy formed thereby ( 101 to the pipe, and above the second treatment tank 102 and the third treatment tank 103, and above the fourth treatment tank 104, the fifth treatment tank 105, and the seventh treatment tank 107. Each deodorizing hole 700 is formed, and the organic wastewater inlet pipe 500 is installed above the first treatment tank 101, and the organic wastewater discharge pipe 600 is installed above the circulation type biological treatment device. The tank 100 is installed Processing apparatus of the high-concentration organic waste water to. According to claim 1, wherein the inner partition of each treatment tank of the circulating biological treatment device tank 100 is organic wastewater introduced through the organic wastewater inlet pipe 500 formed above the first treatment tank 101 is The first notch 108 is disposed at the lower left side of the first treatment tank 101 and the second treatment tank 102, and the third treatment tank 102 and the third treatment tank 103 are located at the upper right of the partition wall. The fifth notch formed in the fourth treatment tank 104, the fifth treatment tank 105, and the upper left side of the partition wall, and the fourth notch formed in the fifth treatment tank 105 and the sixth treatment tank 106 at the upper right side of the partition wall ( High concentration, characterized in that the organic wastewater desalted in the sixth treatment tank via 112 is transferred to the seventh treatment tank 107 by the intermittent air lift 200 and recycled back to the first treatment tank 101. Organic Wastewater Treatment System. In the high concentration organic wastewater treatment apparatus, organic wastewater pretreatment removes contaminants and soil from the well-known screen 801 and the sedimentation tank 802 and stores it in the storage tank 803 to homogenize the liquid phase, and the homogenized pretreated water 1 / 7-1 / 15 times the amount of the mixed liquid filled in the first treatment tank 101, which is an aerobic region of the circulating biological treatment tank 100 of the apparatus of the present invention, in which the chemical mixed liquid is formed, to the mixing tank 804. After the transfer, the supernatant separated from the mixed solution precipitation tank 805 is thoroughly stirred with the treated water oxidized by ozone treatment in the ozone reaction tank 806 and kept in anoxic state for 1-2 days. The pre-treated drainage in the aerobic zone of the circulating biological processor tank 100 in which the biotreatment has already been formed, F / Mv qlrk 0.03-0.09 (kg BOD / kg MLVSS day), solids retention time SRT of 7-15 days The wastewater was treated for 4 to 24 hours with HRT in each region of the circulating biological treatment tank 100, and then the mixed liquid of the aerobic region was injected by the amount introduced into the circulating biological treatment tank 100. Is separated into supernatant and sedimentation sludge in the mixed solution precipitation tank (805), and the supernatant is again converted into a biodegradable substance that can be decomposed by ozone oxidation in an ozone reaction tank (806) through an ozone treatment intermediate tank (807). Ammonia nitrogen is oxidized to nitrate nitrogen, mixed with organic wastewater pretreated in the mixing tank 804, stagnant to anoxic state, and denitrified by nitrite nitrogen and nitrate oxygen contained in supernatant water. Reprocessing in the formula biological treatment tank (100), the sedimentation sludge is temporarily stored in the sludge storage tank (808) and condensed in the coagulation tank 809 by an inorganic coagulant, and again in the coagulation tank (801) using a polymer flocculant. After forming a thick floc (floc) to separate the solid-liquid separation using the dehydrator 811, the onitali liquor and the dewatering follicle wash water is passed through the neutralization tank 812, depending on the operating conditions, dehydration precipitate (813), Filtration relay tank 814 After sterilization in the sterilization tank 818 via the filtration tank 815, discharged to the water tank 817 via the soil treatment tank 816 is used as the follicle washing water, or sterilization tank 818 Treatment method of high concentration organic wastewater, characterized in that the discharge through. ※ Note: The disclosure is based on the initial application.