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Wastewater treating device and method

A waste water treatment and waste water technology, applied in water/sewage treatment, heating water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of destroying the self-purification ability of natural water bodies, aggravating the problem of land salinization, and harsh water ecological environment impact and other issues, to achieve the effect of alleviating the shortage of water resources, reducing the adverse impact, weakening the effect of concentration polarization and scaling

Active Publication Date: 2015-03-25
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if this part of wastewater is directly discharged, a large amount of water resources will be wasted
In addition, the discharge of high-salt wastewater will not only destroy the self-purification ability of local natural water bodies, but also have a bad impact on the water ecological environment, and may lead to aggravation of land salinization

Method used

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  • Wastewater treating device and method

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Embodiment

[0057] Such as figure 1 As shown, the flow rate of wastewater discharged by an enterprise is 200m 3 / h, the TDS of the wastewater is about 4000mg / L-5000mg / L, the turbidity is about 10-20NTU, and the COD value is about 150-200mg / L. The waste water is first introduced into the adjustment tank 1 for homogeneous and even quantity adjustment, and then sent to the pipeline mixer 2 to be fully mixed with the added aluminum salt flocculant to produce flocculation, forming large particle flocs, and then sent to the first-stage filtration system Filter in 3, filter through mechanical filter 31 in the first-stage filtration system 3, intercept more than 99% of large particle suspended matter and more than 80% of colloidal matter, the turbidity of the effluent is ≤5NTU, the COD value is about 150mg / L, and then through The line filter 32 further removes impurities. Wastewater treated by the primary filtration system 3 enters the heat exchanger 4 to adjust the temperature to 22°C to 25°C,...

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Abstract

The invention discloses a wastewater treating device. The wastewater treating device comprises an adjusting pool, a pipeline mixer, a primary filtering system, a secondary filtering system, a primary reverse osmosing system, a secondary reverse osmosing system and an evaporating and crystallizing system. The invention further discloses a wastewater treating method. By the cooperation treatment of the primary filtering system, the secondary filtering system, the primary reverse osmosing system and the secondary reverse osmosing system, a penetrating fluid accounting for about 88% of the volume of wastewater can be recycled to be used as recycled water, and evaporation and crystallization can be further conducted on the rest few penetrating fluid, so that zero emission treatment of wastewater, particularly wastewater high in salt content, can be realized.

Description

technical field [0001] The invention belongs to the field of industrial wastewater treatment, and in particular relates to a wastewater treatment device and method capable of zero-discharge treatment of wastewater. Background technique [0002] In recent years, with the rapid development of my country's petrochemical and coal chemical industries, the construction scale of industrial circulating cooling water systems, chemical water systems, and boiler systems has become larger and larger, and the resulting problem is a large amount of wastewater discharge. This part of wastewater The discharge accounts for about 10% to 20% of the total water used by enterprises, and all of them contain high salt content. Therefore, if this part of wastewater is directly discharged, a large amount of water resources will be wasted. In addition, the discharge of high-salt wastewater will not only destroy the self-purification ability of local natural water bodies, but also cause adverse effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/04C02F1/048C02F1/441C02F1/444C02F1/50C02F1/52C02F9/00C02F2001/5218
Inventor 杨帅井云环罗春桃刘春萌刘洪刚郭伟夏支文
Owner CHNA ENERGY INVESTMENT CORP LTD
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