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Water treatment system and method

A water treatment system and main treatment technology, which is applied in the field of water treatment, can solve the problems of consuming large amounts of chemicals such as acids and alkalis, and a large amount of recycled wastewater, so as to achieve zero discharge and improve quality

Inactive Publication Date: 2016-09-21
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to provide a water treatment system and method to solve the technical problems in the prior art that after the treatment of the Yellow River water, it still needs to consume a large amount of chemicals such as acid and alkali for regeneration and produce a large amount of recycled wastewater

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Embodiment approach

[0021] According to a typical embodiment of the present invention, the sedimentation tank includes a water distribution channel, a pre-mixing area, a flocculation area, a sedimentation area, a tank top sump, a concentration area, and a post-mixing area; The downstream of the sedimentation area is connected with the sump at the top of the pool and the concentration area, the sump at the top of the pool is connected with the post-mixing area, and the concentration area is equipped with a sludge return pump for returning part of the sludge to the pre-mixing area and the remaining part of the sludge. The sludge is pumped to the sludge discharge pump of the sludge treatment system.

[0022] Preferably, an algicide, such as sodium hypochlorite or other oxidizing bactericides, is placed in the distribution channel to prevent algae from growing in the sedimentation tank and the V-shaped filter; a flocculant is placed in the pre-mixing area, and a coagulant is placed in the flocculation...

Embodiment 1

[0044] This embodiment is the Yellow River water treatment system of a company's water purification plant, and the specific process is as follows:

[0045] (1) Water purification process: sedimentation tank + V-shaped filter, the main purpose is to remove suspended solids.

[0046] The working process of the sedimentation tank: the raw water enters the distribution channel, where sodium hypochlorite algicide is added to prevent the growth of algae in the sedimentation tank and V-shaped filter tank. Then enter the pre-mixing area, add flocculant and return sludge in this area, mix quickly through the mixing mixer, coagulation reaction occurs, and produce small particles of alum flowers; then enter the flocculation area, add coagulant aid in this area, Under the action of the impeller of the mixer, large particles of alum flowers are finally formed; the effluent enters the sedimentation area, the mud and water are separated, the clear water is collected by the sump on the top of...

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Abstract

The invention discloses a water treatment system and method. The system comprises a main treatment system and an auxiliary treatment system, wherein the main treatment system comprises a water purifying unit and a pre-desalting unit which communicate with each other in sequence; the auxiliary treatment system comprises an evaporator and a crystallizer which communicate with each other in sequence; the evaporator communicates with the pre-desalting unit; the water purifying unit is used for removing suspensions and comprises a sedimentation tank and a V-shaped filtering tank which communicate with each other in sequence; the pre-desalting unit comprises an ultra-filtration device, a reverse osmosis device, a concentrated water sedimentation tank, a multi-medium filter, a concentrated water ultra-filtration device and a concentrated water reverse osmosis device which communicate with one another in sequence; a desalted water outlet and a concentrated water outlet are formed in the reverse osmosis device, and the concentrated water outlet communicates with the concentrated water sedimentation tank. According to the technical scheme, Yellow River water or surface water is treated, the problem that the Yellow River water or the surface water has high salt content is solved, the quality of discharged water is improved, and zero-emission of sewage is realized in the water treatment process.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a water treatment system and method. Background technique [0002] The salt content, suspended matter content and turbidity of the Yellow River water are relatively high, and the hardness is relatively high. At present, the Yellow River water treatment process is mainly coagulation and sedimentation treatment. The sediment produced is treated as sludge after sedimentation and dehydration, but the salt contained in the water cannot be removed. In actual industrial use, it is often necessary to undergo ion exchange to remove the salt. However, this requires the consumption of a large amount of acid, alkali and other agents for regeneration, and at the same time produces a large amount of regeneration wastewater, which must be effectively treated. treatment to avoid environmental pollution. Contents of the invention [0003] The present invention aims to provide a water ...

Claims

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Application Information

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IPC IPC(8): C02F9/10
CPCY02A20/131C02F9/00C02F1/001C02F1/04C02F1/441C02F1/444C02F1/52C02F2001/5218C02F2103/007
Inventor 奚竹青余良永范树军尚永红关艳平
Owner CHNA ENERGY INVESTMENT CORP LTD
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