Near-zero emission system for deep treatment of coking strong brine

An advanced treatment, near-zero discharge technology, applied in sludge treatment, filtration treatment, water/sewage treatment, etc., can solve the problems of low concentration ratio of nanofiltration membrane, low market utilization value, complex composition of coking wastewater, etc. Excellent water purification effect, reducing the risk of clogging and corrosion, and the effect of clear and transparent effluent

Pending Publication Date: 2022-01-28
北京航天环境工程有限公司
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Problems solved by technology

[0007] The main problems in this patented zero-discharge system are as follows: (1) The coking wastewater after biochemical treatment adopts advanced membrane separation technology for ammonia nitrogen removal, only ammonia nitrogen in the wastewater is removed, and other pollutants such as organic matter and COD are not removed; (2) ) membrane concentrated water is used as quenching water, which does not really achieve zero discharge
Existing problems include: (1) CO...

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  • Near-zero emission system for deep treatment of coking strong brine

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Embodiment Construction

[0032] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] According to an embodiment of the present invention, a near-zero discharge system for advanced treatment of coking concentrated brine is provided, such as figure 1 As shown, it includes regulating tank system 1, DTRO (Disc tube reverse osmosis, disc tube reverse osmosis) pretreatment system 2, filter 3, DTRO membrane concentration system 4, product water tank 5, concentrated water tank 6, ev...

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Abstract

The invention discloses a near-zero emission system for deep treatment of coking strong brine. The near-zero emission system comprises an adjusting tank system, a DTRO pretreatment system, a filter, a DTRO membrane concentration system, a water production tank, a concentrated water tank, an evaporation pretreatment system, an evaporation crystallization system, a mother liquor drying system, a sludge temporary storage tank, a sludge concentration tank and a sludge treatment system, wherein the adjusting tank system, the DTRO pretreatment system, the filter, the DTRO membrane concentration system, the concentrated water tank, the evaporation pretreatment system, the evaporation crystallization system and the mother liquor drying system are communicated in sequence; the DTRO pretreatment system and the evaporation pretreatment system are both communicated with the sludge temporary storage tank; the sludge temporary storage tank, the sludge concentration tank and the sludge treatment system are communicated in sequence; and the filter and the sludge concentration tank are both communicated with the adjusting tank system.

Description

technical field [0001] The invention relates to the technical field of coking wastewater treatment systems, in particular to a near-zero discharge system for advanced treatment of coking concentrated brine. Background technique [0002] The composition of coking wastewater is complex, containing pollutants such as phenols, polycyclic aromatic compounds and heterocyclic compounds of nitrogen, oxygen and sulfur. It is a typical refractory organic compound, high concentration, high pollution, toxic and difficult to treat. Industrial wastewater contains a large amount of organic and inorganic harmful substances that are harmful to the human body and pollute the environment. At present, most enterprises adopt the treatment process of "biochemical treatment + advanced treatment". After treatment, the water produced by the system is used for reuse, and the recovery rate is generally about 70%. The concentrated water produced by the system is used for coke quenching and blast furnac...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F11/122C02F101/16C02F101/14
CPCC02F9/00C02F11/122C02F1/001C02F1/441C02F1/04C02F1/66C02F2101/14C02F1/56C02F2101/16C02F1/5236C02F1/488
Inventor 刘海伦张飞龙张宏策张砚耘张旭贾泽清刘辉
Owner 北京航天环境工程有限公司
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