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Silicon steel chromium-containing and organic resin mixed waste liquid treatment system and treatment method

A waste liquid treatment system and organic resin technology, applied in the field of water treatment, can solve the problems of ineffective and stable operation of large-scale production, high maintenance costs, and high operating costs

Active Publication Date: 2020-10-30
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The precision of new ultrafiltration and other membrane filtration equipment can reach 0.1 μm or even higher, which can fully meet the requirements, but the cost of the equipment is high, the operation cost is high, the maintenance cost is high, and the residual soluble organic resin in the water will quickly clog Membrane holes, resulting in frequent cleaning, large-scale production cannot run effectively and stably

Method used

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  • Silicon steel chromium-containing and organic resin mixed waste liquid treatment system and treatment method

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Experimental program
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Embodiment 1

[0046] Embodiment 1 adopts silicon steel waste water station to contain chromium and organic resin mixed waste water as raw water, and the quality of raw water is shown in Table 1 below, and the treatment capacity is 1m 3 / h, the processing flow of embodiment 1 is as figure 1 The processing flow shown.

[0047] Table 1: Influent Water Quality Table

[0048] project pH Suspended matter (mg / L) Hexavalent chromium (mg / L) Total Chromium (mg / L) System water 4 2030 810 1080

[0049] The waste liquid flows through the reduction tank 1, the neutralization tank 2, and the coagulation tank 3 at one time; it enters the clarifier 5 through the water inlet pipe of the lift pump 4, and after adding a coagulant, a sludge suspension layer is formed; the waste liquid is discharged from the clarifier 5 The middle outlet water pipe flows out, enters the dissolved air flotation tank 8 through the dissolved air tank 6, enters the intermediate water tank after being...

Embodiment 2

[0064] Embodiment 2 adopts silicon steel wastewater station chromium-containing and organic resin mixed waste liquid as raw water, the raw water quality is as shown in Table 3 below, and the treatment capacity is 1.2m3 / h, and the treatment process of embodiment 2 is as follows figure 1 The processing flow shown.

[0065] Table 3: Influent Water Quality Table

[0066] project pH Suspended matter (mg / L) Hexavalent chromium (mg / L) Total Chromium (mg / L) System water 3.5 1780 770 930

[0067] The waste liquid flows through the reduction tank 1, the neutralization tank 2, and the coagulation tank 3 at one time; it enters the clarifier 5 through the water inlet pipe of the lift pump 4, and after adding a coagulant, a sludge suspension layer is formed; the waste liquid is discharged from the clarifier 5 The middle outlet water pipe flows out, enters the dissolved air flotation tank 8 through the dissolved air tank 6, enters the intermediate water tank a...

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Abstract

The invention discloses a silicon steel chromium-containing and organic resin mixed waste liquid treatment system. A reduction tank, a neutralization tank, a coagulation tank, a lifting pump and a clarification tank are connected in sequence; an outlet pipe of the coagulation tank is connected with a water inlet pipe of the lifting pump; a water inlet pipe of the clarification tank is connected with a water outlet pipe of the lift pump; the water outlet pipe of the clarification tank is connected with a water inlet pipe of the dissolved air flotation tank, the dissolved air tank water outlet pipe is connected with a dissolved air flotation tank water inlet pipe ; the dissolved air flotation tank, the middle water tank, the filter water inlet pump, the cyclone sand fine filter water inlet pipe, the filter water tank, the pressure pump and the activated carbon filter are sequentially connected, and the activated carbon filter water outlet pipe is connected with a discharge pipe. In addition, the invention provides a method for treating waste liquid by using the treatment system. With a series of combined optimization processes, chromium-containing and organic resin mixed waste liquidgenerated in the silicon steel production process can be fully treated, and increasingly stringent environmental protection requirements are met.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a process for treating mixed waste liquid containing chromium in silicon steel and organic resin. Background technique [0002] On February 28, 2017, the Shanghai Municipal Environmental Protection Bureau issued Huhuangui [2017] No. 5 document "Shanghai Municipal Environmental Protection Bureau's Notice on Further Strengthening the Supervision of Class I Water Pollutant Discharge Enterprises", which clearly requires: New, rebuilt and expanded enterprises that discharge Class I water pollutants, if there are relevant industry discharge standards, will implement the special discharge limits of water pollutants in the relevant industry discharge standards from now on; existing enterprises will implement them from January 1, 2018 . Before December 31, 2017, automatic monitoring facilities should be installed, and the water outlet detection point should be the "waste liquid d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/16
CPCC02F9/00C02F1/66C02F1/70C02F1/5281C02F2001/007C02F1/24C02F1/001C02F1/283C02F2103/16
Inventor 倪建春殷玫婕吴昊杨翠平尤勇牟磊秦志浩金钢
Owner BAOSHAN IRON & STEEL CO LTD