KR950008376A - Wastewater free discharge treatment method and system - Google Patents

Wastewater free discharge treatment method and system Download PDF

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Publication number
KR950008376A
KR950008376A KR1019930018051A KR930018051A KR950008376A KR 950008376 A KR950008376 A KR 950008376A KR 1019930018051 A KR1019930018051 A KR 1019930018051A KR 930018051 A KR930018051 A KR 930018051A KR 950008376 A KR950008376 A KR 950008376A
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KR
South Korea
Prior art keywords
wastewater
stirring
water
sludge
flocculant
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KR1019930018051A
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Korean (ko)
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KR960011886B1 (en
Inventor
이민철
박형열
정규진
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남궁혁
두산유리 주식회사
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Priority to KR1019930018051A priority Critical patent/KR960011886B1/en
Publication of KR950008376A publication Critical patent/KR950008376A/en
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Publication of KR960011886B1 publication Critical patent/KR960011886B1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds

Abstract

본 발명은 산폐수 무방류 처리방법 및 그 시스템에 관한 것으로, 좀 더 상세하게는 a)산폐수를 소석회와 혼합시켜 이의 pH를 조절하는 단계; b)상기 폐수를 교반 및 침전시켜 슬러지 형태로 제거하는 단계; c) 응집제를 첨가하여 교반 시킨 후 응집된 침전물을 재침전, 제거시키는 단계; 및 d) 침전되지 않은 부유물질을 여과시킨 후 용수로 재사용하는 단계로 구성됨으로써 기존의 폐수처리 시스템에 비해 비교적 간단한 물리적 장치만을 사용하므로 시설이 용이할 뿐만 아니라, 폐수의 구성 성분인 유해이온의 농도를 최대한 감소시켜서 재사용시의 안전문제에도 기여할 수 있으며, 중화반응의 부산물로 침전된 슬러지의 처리외에는 어떠한 방류도 이루어지지 않기 때문에 산업용수의 절약이라는 시책이 호응할 수 있는 산폐수 무방류 처리방법 및 그 시스템에 관한 것이다.The present invention relates to a method for treating acid free wastewater and its system, and more specifically, a) mixing the acid wastewater with hydrated lime to adjust its pH; b) stirring and settling the waste water to remove it in the form of sludge; c) adding and stirring the flocculant and reprecipitating and removing the flocculated precipitate; And d) filtration of suspended solids that have not been precipitated and reused as water, which makes use of relatively simple physical devices simpler than conventional wastewater treatment systems, thus facilitating the facility and increasing the concentration of harmful ions as constituents of wastewater. It can contribute to the safety problem of reuse by reducing as much as possible, and since no discharge is made except the treatment of sludge precipitated as a by-product of the neutralization reaction, the wastewater free discharge treatment method and system that can respond to the policy of saving industrial water It is about.

Description

산폐수 무방류 처리방법 및 그 시스템Wastewater free discharge treatment method and system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 산폐수 무방류 처리 시스템의 개략도이다.1 is a schematic diagram of a wastewater free discharge treatment system according to the present invention.

Claims (7)

a)산폐수를 소석회와 혼합시켜 이의 pH를 조절하는 단계; b)상기 폐수를 교반 및 침전시켜 슬러지 형태로 제거하는 단계; c) 응집제를 첨가하여 교반 시킨 후 응집된 침전물을 재침전, 제거시키는 단계; 및 d) 침전되지 않은 부유물질을 여과시킨 후 용수로 재사용하는 단계로 이루어짐을 특징으로 하는 산폐수 무방류 처리방법.a) mixing the acid wastewater with slaked lime to adjust its pH; b) stirring and settling the waste water to remove it in the form of sludge; c) adding and stirring the flocculant and reprecipitating and removing the flocculated precipitate; And d) filtering the suspended solids that have not been precipitated and reusing them with water. 제1항에 있어서, 상기 산폐수의 pH가 약9.0∼10.0정도로 조절됨을 특징으로 하는 산폐수 무방류 처리방법.The method of claim 1, wherein the pH of the acid wastewater is adjusted to about 9.0 to 10.0. 제2항에 있어서, 상기 산폐수의 pH가 약9.5정도로 조절됨을 특징으로 하는 산폐수 무방류 처리방법.3. The method of claim 2, wherein the pH of the acid wastewater is adjusted to about 9.5. 제1항에 있어서, 상기 응집제가 명반 및 애니언 폴리머임을 특징으로 하는 산폐수 무방류 처리방법.The method of claim 1, wherein the flocculant is alum and onion polymer. 제1항에 있어서, 상기 처리방법이 d) 단계 이후 EDR공정을 더 포함하는 것을 특징으로 하는 산폐수 무방류 처리방법.The method of claim 1, wherein the treatment method further comprises an EDR process after step d). 산폐수를 소석회와 혼합시켜 pH를 조절하는 pH조정조(5)와 상기 폐수를 교반 및 침전시켜 슬러지 형태로 제거하는 침전조(7), 응집제를 첨가하여 교반시킨 후 응집된 침전물을 재침전, 제거시키는 응집조(8) 및 침전되지 않은 부유물질을 여과시켜서 용수로 재사용할 수 있도록 하는 여과장치(10)로 이루어진 것을 특징으로 하는 산폐수 무방류 처리 시스템.A pH adjusting tank (5) for adjusting pH by mixing acid wastewater with slaked lime, and a precipitation tank (7) for stirring and precipitation of the wastewater to remove it in the form of sludge, and adding and stirring a flocculant to reprecipitate and remove the aggregated precipitate. A coagulation tank (8) and a non-discharged wastewater treatment system, characterized in that consisting of a filtration device (10) for filtering the suspended solids to be reused as water. 제6항에 있어서, 상기 처리 시스템이 여과장치(10)를 거친 용수에 EDR을 도입할 수 있는 EDR 장치(12)를 더 포함하는 것을 특징으로 하는 산폐수 무방류 처리 시스템.7. The wastewater free discharge treatment system of claim 6 wherein the treatment system further comprises an EDR device (12) capable of introducing an EDR into the water passed through the filtration device (10). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930018051A 1993-09-08 1993-09-08 Waste water treatment method KR960011886B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930018051A KR960011886B1 (en) 1993-09-08 1993-09-08 Waste water treatment method

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Application Number Priority Date Filing Date Title
KR1019930018051A KR960011886B1 (en) 1993-09-08 1993-09-08 Waste water treatment method

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KR950008376A true KR950008376A (en) 1995-04-17
KR960011886B1 KR960011886B1 (en) 1996-09-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100687095B1 (en) * 2005-06-14 2007-02-26 한국전력기술 주식회사 Electrodialysis reversal and electrochemical wastewater treatment process of compound containing nitrogen
KR101290333B1 (en) * 2011-05-31 2013-07-29 주식회사 글라소울 Regeneration system for an etching solution

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