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Integrated wastewater softening and clarifying device and method

A clarification device and integrated technology, applied in water softening, gaseous effluent wastewater treatment, etc., can solve the problems of high investment cost, long system treatment process, and large floor area, so as to reduce floor space and investment Low cost, the effect of reducing investment costs

Pending Publication Date: 2017-09-05
XIAN TPRI WATER & ENVIRONMENTAL PROTECTION +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To complete the treatment process, the system usually needs to be equipped with equipment such as neutralization tanks, reaction tanks, flocculation tanks and clarification tanks. The system has a long process flow, relatively high investment costs, and a large floor area.

Method used

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  • Integrated wastewater softening and clarifying device and method

Examples

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Embodiment 1

[0028] After pre-sedimentation of desulfurization wastewater from a thermal power plant, the content of suspended solids is 2500mg / L, Ca 2+ The content is 1732mg / L, Mg 2+ The content is 16800mg / L, and the pre-settled desulfurization wastewater is transported to the primary reaction zone 1 through the wastewater lifting pump, and the dosage of NaOH is adjusted according to the flow rate of the desulfurization wastewater and the pH value of the mixed solution in the primary reaction zone 1, and then Stir the mixed solution in the primary reaction zone 1 by the primary agitator 3, the stirring time is 20min, then enter the secondary reaction zone 2, and add Na to the secondary reaction zone 2 2 CO 3 , so that the mixed solution in the secondary reaction zone 2 and Na 2 CO3 Stir the reaction for 20 minutes, the mixed solution overflowed from the secondary reaction zone 2 enters the bottom of the inner guide tube, and the reaction agitator 6 is lifted by flocculation to make the ...

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Abstract

The invention discloses an integrated wastewater softening and clarifying device and method. The integrated wastewater softening and clarifying device comprises a drum body which is successively divided into a reaction zone, a working zone, a flocculation and clarifying separation zone and a sludge accumulation zone from top to bottom, wherein the reaction zone is divided into a first-grade reaction zone and a second-grade reaction zone; the outlet of the top part of the first-grade reaction zone communicates with the inlet of the top part of the second-grade reaction zone; the interior of the working zone is provided with a maintenance platform; and the flocculation and clarifying separation zone is successively provided with a flocculation reaction zone and a clarifying separation zone from inside to outside. The device and the method provided by the invention have the advantages of short wastewater processing flow, low investment cost and small occupied land area.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment and resource recycling, and relates to an integrated wastewater softening and clarification device and method. Background technique [0002] A variety of wastewater from thermal power plants has the characteristics of high suspended solids content and easy scaling, such as ash water, desulfurization wastewater, coal-containing wastewater, etc. Taking desulfurization wastewater as an example, the content of suspended solids is high, the water quality is complex, and the wastewater contains a large amount of Ca 2+ , Mg 2+ , SO 4 2- and other scaling ions, the current conventional treatment method is to add lime or liquid caustic soda, soda ash, heavy metal precipitant, coagulant and flocculant and other agents, after neutralization reaction, flocculation precipitation, clarification and separation and other processes, discharge after reaching the standard . The commonly ...

Claims

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Application Information

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IPC IPC(8): C02F5/02C02F103/18
CPCC02F5/02C02F2103/18
Inventor 王正江王璟连坤宙侯逊曹红梅冯春李刚周亚男毛进袁国全刘亚鹏
Owner XIAN TPRI WATER & ENVIRONMENTAL PROTECTION
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