US3731807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically determining the optimum amounts of reagents to be added to a liquid for its clarification
Assignee: Suez International SAS
•
Filing: 1970-07-07
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Granted: 1973-05-08
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Expires: 1990-07-07
Abstract
Abstract Apparatus for automatically determining the optimum proportion of coagulant reagent to be added to a liquid in order to clarify same by coagulation of the substances in colloidal suspension therein, which comprises a plurality of mixing vessels into which predetermined quantities of liquid and reagent are introduced and in which these liquid and reagent are adapted to mix together, the resulting mixture being subsequently separated into a decanting fraction and a supernatant fraction, means for measuring the turbidity of said supernatant fraction, said means consisting advantageously of one or a plurality of turbidimeters, and other means such as computer for analyzing and comparing the measurements made in said turbidimeter or turbidimeters, and determining the optimum proportion of reagent to be added to the liquid.
Inventors
- 👤 R Louboutin
- 👤 C Daudenarde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:15
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/82; G01N21/83; C; C02; C02F; C02F1/00; C02F1/52; C02F1/5209; G05; G05D; G05D21/00; G05D21/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
166 words
An apparatus for the automatic determination of the optimum proportion of the coagulant reagent to be added to a liquid to obtain clarification of said liquid by coagulation of the colloidal materials in suspension comprising means for storing said liquid to be examined, a plurality of mixing, floculation and decantation containers, means for leading the liquid to be examined into said containers, a storing capacity for the coagulant reagent, means for diluting said coagulant reagent, means for proportioning said coagulant reagent when diluted one time, means for leading to said mixing, floculation and decantation containers a proportioned quantity of said coagulant reagent in dilution form, a turbidimeter connected for measuring successively the turbidity of the supernatant liquid in each container for the mixing, floculation and decantation, calculating means connected for registering and comparing the value of the turbidity of the supernatant liquid in each container and finally determining the optimum value of the quantity of diluted reagent to be introduced into the liquid to be treated.
Claim 2
Independent Claim
166 words
An apparatus for the automatic determination of the optimum proportion of the coagulant reagent to be added to a liquid to obtain clarification of said liquid by coagulation of the colloidal materials in suspension comprising means for storing said liquid to be examined, a plurality of mixing, floculation and decantation containers, means for leading the liquid to be examined into said containers, a storing capacity for the coagulant reagent, means for diluting said coagulant reagent, means for proportioning said coagulant reagent when diluted one time, means for leading to said mixing, floculation and decantation containers a proportioned quantity of said coagulant reagent in dilution form, a turbidimeter connected for measuring successively the turbidity of the supernatant liquid in each container for the mixing, floculation and decantation, calculating means connected for registering and comparing the value of the turbidity of the supernatant liquid in each container and finally determining the optimum value of the quantity of diluted reagent to be introduced into the liquid to be treated.
Claim 3
Dependent Claim
61 words
An apparatus according to claim 1 wherein means are provided for storing the diluted and proportioned solution of said coagulant reagent, said means comprising a storing capacity in a number equal to that of said mixing, floculation and decantation containers, said capacity being provided with detection electrodes for the level reached in each capacity by the coagulant reagent diluted and proportioned.
Claim 4
Dependent Claim
65 words
An apparatus according to claim 1 wherein capacities for storing the supernatant liquid in the mixing, floculation and decantation containers is provided, said storing capacities being in a number equal to that of said containers, means for leading the supernatant liquid in each of said containers to the corresponding storage capacity and means for leading to a turbidimeter the liquid introduced into eacH storing capacity.
Claim 5
Dependent Claim
42 words
An apparatus according to claim 1 wherein the means for diluting the coagulant reagent and for proportioning such reagent comprises a capacity provided with electrodes designed to control the level reached by the coagulant reagent and by said coagulant reagent once diluted.
Claim 6
Dependent Claim
54 words
An apparatus according to claim 1 wherein an enclosure surrounds said containers for the mixing, floculation and decantation and an enclosure surrounds said storing container for the supernatant fraction coming from each of said containers, means for leading to each of said two enclosures a flow of liquid secured from said liquid before examination.
Claim 7
Dependent Claim
39 words
An apparatus according to claim 1 wherein a capacity is provided for the liquid to be examined formed by a tank at constant level and provided with detection electrodes of the level reached by the liquid in said capacity.
Claim 8
Dependent Claim
70 words
An apparatus according to claim 1 wherein means are provided leading to the bottom of the containers for mixing, floculation and decantation of the raw water to be treated, means for storing the cleaning water led to the base of a storage container connected to said containers and means leading to the lower portion of the tank of said turbidimeter said cleaned water for washing said containers and said tank.
Claim 9
Dependent Claim
27 words
In an apparatus according to claim 1 wherein the mixing, floculation and decantation containers number five, said containers being equipped with agitation means having two rotation speeds.
Claim 10
Dependent Claim
66 words
An apparatus according to claim 1 wherein calculation means are provided for determining automatically the quantity of reagent to be added to the liquid of the mixing container which receives the smallest proportion of the reagent so that for n containers receiving an increasing proportion of reagent, the rate of optimum treatment tends always to be injected into the container in the ratio (n + 1)/2.
Claim 11
Dependent Claim
36 words
In an apparatus according to claim 1 wherein complementary storing dilutions proportions and injections are provided in the mixing containers of the reagent completing the coagulant action, aiding the floculation and/or correcting the pH for example.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |