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Dyeing wastewater advanced treatment device

A technology for advanced treatment of printing and dyeing wastewater, applied in textile industry wastewater treatment, multi-stage water treatment, special compound water treatment, etc. , to achieve the effect of convenient maintenance, realization of sewage recycling, and low investment in infrastructure

Inactive Publication Date: 2016-06-08
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the main treatment process of printing and dyeing wastewater is the traditional combined process of physicochemical and biological methods, in which the activated sludge method is widely used, but some indicators such as COD, ammonia nitrogen, and chroma of the printing and dyeing wastewater treated by traditional methods are still on the high side, which is very high. It is difficult to continue to meet the current emission standards stably

Method used

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  • Dyeing wastewater advanced treatment device
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  • Dyeing wastewater advanced treatment device

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Embodiment

[0037] Such as Figure 1 to Figure 6 As shown, a printing and dyeing wastewater advanced treatment device of the present invention includes a regulating tank, an air flotation tank 1, an advanced oxidation sedimentation tank 2, and an improved packing type A 2 O pond 3, reverse flow aeration filter pond 4 and stabilization pond 5; the regulating pond, air flotation pond 1, advanced oxidation sedimentation pond 2, improved packing type A 2 The O pond 3, the reverse flow aeration filter pond 4 and the stabilizing pond 5 are connected in sequence.

[0038] The regulating pond includes a regulating pond inlet pipe and a regulating pond outlet pipe for regulating the water quality and quantity of the printing and dyeing wastewater.

[0039] The air flotation tank 1 includes an air flotation tank inlet pipe 1-1 and an air flotation tank outlet pipe for discharging treated water, and the air flotation tank is sequentially composed of mud sand area 1-2, mixing area 1-3 and separation...

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Abstract

The invention relates to a dyeing wastewater advanced treatment device which comprises a regulating tank, a floatation tank, an advanced oxidation precipitation tank, an improved filler-type A2O tank, a reflux aeration filter tank and a stabilization pond, wherein the floatation tank is sequentially composed of a silt region, a mixing region and a separation region from bottom to top; the advanced oxidation precipitation tank comprises an aeration mixing region and a precipitation region; the improved filler-type A2O tank comprises a facultative anaerobic section, an anoxic section and an anaerobic section which are divided by deflector plates; and the reflux aeration filter tank comprises a downstream region, an upstream region and a sludge region. Wastewater enters the floatation tank via the regulating tank to remove scum, enters the advanced oxidation precipitation tank in which the pollutants are subjected to oxidative decomposition, enters the improved filler-type A2O tank to perform anoxic and anaerobic reactions, is subjected to reaction and filtration by the reflux aeration filter tank and enters the clean water tank, and the water treated by the stabilization pond is recycled.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an advanced treatment device for printing and dyeing wastewater. Background technique [0002] The textile industry is related to the national economy and people's livelihood. It is a traditional pillar industry in my country. Its industrial output value accounts for about 10% of the country's total output value, and its product market share ranks second in the world. Safety has created a pressure that cannot be underestimated, especially printing and dyeing. As an important link in the textile industry chain, 80% of the pollutants in the entire industrial chain are discharged. According to statistics, 2.45 billion tons of printing and dyeing wastewater are produced nationwide every year, accounting for about 12% of the total discharge of industrial wastewater, ranking third among the 41 counted industries. The composition of printing and dyeing wastewater is complex,...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/24C02F1/52C02F1/78C02F3/02C02F3/30C02F3/325C02F2103/30C02F2301/08C02F2305/02
Inventor 王莉万玉山邹涛李大伟
Owner CHANGZHOU UNIV
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