SU701958A1 - Method of purifying waste water from nitrates - Google Patents

Method of purifying waste water from nitrates

Info

Publication number
SU701958A1
SU701958A1 SU772531230A SU2531230A SU701958A1 SU 701958 A1 SU701958 A1 SU 701958A1 SU 772531230 A SU772531230 A SU 772531230A SU 2531230 A SU2531230 A SU 2531230A SU 701958 A1 SU701958 A1 SU 701958A1
Authority
SU
USSR - Soviet Union
Prior art keywords
nitrates
wastewater
waste water
purifying waste
denitrifier
Prior art date
Application number
SU772531230A
Other languages
Russian (ru)
Inventor
Лев Васильевич Гудков
Владимир Петрович Иовлев
Виктор Михайлович Богданов
Николай Васильевич Базлов
Екатерина Ильинична Щипило
Original Assignee
Предприятие П/Я В-8685
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-8685 filed Critical Предприятие П/Я В-8685
Priority to SU772531230A priority Critical patent/SU701958A1/en
Application granted granted Critical
Publication of SU701958A1 publication Critical patent/SU701958A1/en

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  • Treatment Of Water By Oxidation Or Reduction (AREA)

Description

Изобретение относитс  к способам очистки сточных вод и может найти применение в хими ческой и других отрасл х промышленности, где по услови м работы приходитс  сталкивать с  с загр знением сточных вод нитратами и со динени 1у;и алюмини . К предлагаемому способу наиболее близок способ очистки сточных вод от нитратов, по которому сточные воды смешивают с осветленными бытовыми сточными водами, смесь подают в денитрификатор и подвергают биохимической очистке с денитрифицирующими бактери ми 1. Этот способ недостаточно эффективен в случае присутстви  в сточных водах нар ду с нитратами солей алюмини . При смешении таких сточных вод с бытовыми образуетс  осадок в результате чего зффективность (степень очистки последующей биохимической очистки фильтрата снижаетс . Степень очистки от нитратов уменьщаетс  в результате снижени  химического потреблени  кислорода (ХПК), вызванного наличием солей алюмини . С целью повышени  степа)и очистки от нитратов в присутствии солей алюмини  в денитрификатор дополнительно ввод т бытовые сточные воды в количестве, достаточном дл  достижени  окислительно-восстановительного потенш)ала смеси - 220 - (-240) мВ. Способ ос тлествл ют следующим образом. Стошые воды, подлежаидае очистке, смешивают с бытовыми сточными водами в оптимальном соотношении. При зтом выпадает осадок. Жидкую фазу направл ют в денитрификатор типа метантанка с активным илом. Одновременно п дет1трификатор ввод т бытовые сточные воды в количестве , достаточном дл  достижени  окислительно-восстановительного потенциала смеси - 220 - 240 мВ., т.е. . контроль смешивани  провод т по окислительно-восстановительному потенциалу . При значении потенциала ниже 220 мВ степень очистки резко уменьшаетс  (85%). Изменение потенциала вьпне - 240 мВ из-за слишком большой доли бытовой стошой воды приводит к увеличению концентрации аммиака в воде, котора  выводитс  из денитрификатора , т.е. способность установки к денитрифиThe invention relates to wastewater treatment methods and can be used in the chemical and other industries of the industry, where, according to the conditions of work, it is necessary to interfere with the contamination of wastewater with nitrates and from dinane 1y; and aluminum. The proposed method is closest to the treatment of wastewater from nitrates, in which the wastewater is mixed with clarified domestic wastewater, the mixture is fed into the denitrifier and subjected to biochemical purification with denitrifying bacteria 1. This method is not sufficiently effective if it is present in the wastewater along with nitrates of aluminum salts. When such wastewater is mixed with domestic water, a precipitate is formed, resulting in efficiency (purification of the subsequent biochemical purification of the filtrate decreases. The degree of purification from nitrates decreases as a result of a decrease in chemical oxygen consumption (COD) caused by the presence of aluminum salts. To increase the degree) nitrates in the presence of aluminum salts, household wastewater is additionally introduced into the denitrifier in an amount sufficient to achieve the redox potential of the mixture - 220 - (-240) V. The method is completed as follows. Waste water to be treated is mixed with household wastewater in an optimal ratio. At this, a precipitate falls. The liquid phase is sent to a denitrifier of the type of methane tank with active sludge. At the same time, a household wastewater is introduced in a quantity sufficient to reach the redox potential of the mixture - 220–240 mV, i.e. . the control of mixing is carried out at the redox potential. When the potential value is below 220 mV, the purification rate decreases sharply (85%). A change in the potential of –– 240 mV due to an excessively large proportion of household wastewater leads to an increase in the concentration of ammonia in the water that is removed from the denitrifier, i.e. installation ability to denitrify

SU772531230A 1977-10-18 1977-10-18 Method of purifying waste water from nitrates SU701958A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772531230A SU701958A1 (en) 1977-10-18 1977-10-18 Method of purifying waste water from nitrates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772531230A SU701958A1 (en) 1977-10-18 1977-10-18 Method of purifying waste water from nitrates

Publications (1)

Publication Number Publication Date
SU701958A1 true SU701958A1 (en) 1979-12-05

Family

ID=20727825

Family Applications (1)

Application Number Title Priority Date Filing Date
SU772531230A SU701958A1 (en) 1977-10-18 1977-10-18 Method of purifying waste water from nitrates

Country Status (1)

Country Link
SU (1) SU701958A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548715A (en) * 1981-03-12 1985-10-22 Schering Ag Process for aeration of effluents in equalizing and reservoir basins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548715A (en) * 1981-03-12 1985-10-22 Schering Ag Process for aeration of effluents in equalizing and reservoir basins

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