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Wastewater treatment system with multiple crystallizer units and wastewater treatment method based thereon

A wastewater treatment system and crystallizer technology, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc., to slow down pipe plugging, reduce operating costs, reduce the generation of large salt and wall hanging Effect

Active Publication Date: 2017-08-29
HORIZON WATER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of wastewater treatment system and wastewater treatment method with multiple sets of crystallizers, thereby solving the aforementioned problems existing in the prior art

Method used

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  • Wastewater treatment system with multiple crystallizer units and wastewater treatment method based thereon
  • Wastewater treatment system with multiple crystallizer units and wastewater treatment method based thereon
  • Wastewater treatment system with multiple crystallizer units and wastewater treatment method based thereon

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Embodiment

[0028] Reference figure 1 , The wastewater treatment system with multiple sets of crystallizers described in this embodiment includes: a wastewater pretreatment device, an evaporator, a circulating crystallizer group, a crystal filtration device, and a dehydration device; the wastewater pretreatment device, the The evaporator, the circulating crystallizer group, the crystal filtering device, and the dehydrating device are connected in sequence; the circulating crystallizer group includes a main inlet, a main outlet, and a plurality of circulating crystallizers; the main inlets are respectively Connected to the evaporator and the inlet of each circulating crystallizer, and the main outlet is respectively connected to the crystal filtering device and the outlet of each circulating crystallizer; any two circulating crystallizers are connected by connecting valves; each cycle A solution detection element is arranged in the crystallizer; the system also includes a controller, which i...

Embodiment 2

[0034] In this embodiment, the wastewater treatment method based on the wastewater treatment system with multiple crystallizers as described in embodiment 1, the method includes:

[0035] S1, start the wastewater treatment system, and the wastewater to be treated passes through the wastewater pretreatment device and the evaporator in turn, and enters the circulating crystallizer group for this round of crystallization cycle;

[0036] S2, each circulating crystallizer in the circulating crystallizer group is sequentially numbered in the order from first to last through which the wastewater to be treated flows;

[0037] Set the circulating crystallizer that the wastewater to be treated currently passes through first as the first circulating crystallizer, and set the circulating crystallizer that the wastewater to be treated currently passes through last as the nth circulating crystallizer, where n represents the circulating crystallizer The total number of circulating crystallizers in ...

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Abstract

The invention discloses a wastewater treatment system with multiple crystallizer units and a wastewater treatment method based thereon and relates to the field of wastewater treatment. The wastewater treatment system comprises a wastewater pretreatment device, a vaporizer, a circulation crystallizer set, a crystal filter, and a dewatering device which are communicated in sequence; the circulation crystallizer set includes a main inlet, a main outlet and multiple circulation crystallizers. The wastewater treatment method comprises: during wastewater treatment, on the basis of results of a solution detection element, when the detection result of any one forced circulation crystallizer of the forced circulation crystallizer group reaches a preset threshold, changing, by a controller, flowing direction of the wastewater within specified time, such that the sequence of the wastewater to flow through the multiple forced circulation crystallizers of the forced circulation crystallizer group is changed. Less lumpy salt is generated in the crystallizers and attach to the walls, tube blockage is relieved, and therefore, operating efficiency of the whole system is thereby improved, with operating cost lowered.

Description

Technical field [0001] The invention relates to the field of wastewater treatment, in particular to a wastewater treatment system with multiple sets of crystallizers and a wastewater treatment method. Background technique [0002] At present, domestic wastewater treatment systems generally include pretreatment systems, falling film evaporators, forced circulation crystallizers, crystal filtration systems, centrifugal dehydration systems, etc. Among them, the bulk salt formed in the crystallizer often causes pipe blockage in actual operation. However, pipe blockage will reduce the efficiency of the entire system and increase energy consumption, which is detrimental to energy conservation and emission reduction. Summary of the invention [0003] The purpose of the present invention is to provide a wastewater treatment system and a wastewater treatment method with multiple sets of crystallizers, so as to solve the aforementioned problems in the prior art. [0004] In order to achieve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/048C02F1/001C02F2209/05C02F2209/11C02F2209/42C02F2301/08
Inventor 田旭峰
Owner HORIZON WATER CO LTD
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